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Journal articles on the topic 'Al2O3 Nanomaterial'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Qiao, Wei, Feilong Yuan, Xiaojian Xu, and Qingzhou Wang. "Research on the Properties of Nano-Al2O3- and Nano-SiO2-Modified Bio-Asphalt and Mixtures." Buildings 14, no. 11 (2024): 3366. http://dx.doi.org/10.3390/buildings14113366.

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Bio-oil as a substitute or modifier for petroleum asphalt has significant environmental, economic, and sustainable development implications. However, the insufficient high-temperature and anti-aging characteristics of bio-asphalt lead to the limited application of bio-oil in road engineering. In this study, the characteristics of bio-asphalt were reinforced by nano-Al2O3 and nano-SiO2. The nanomaterial-modified bio-asphalt was evaluated using basic characteristics, viscosity, and high- and low-temperature rheological characteristic tests. Meanwhile, the road behavior of nanomaterial-modified b
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Ng, C. W. W., and J. L. Coo. "Hydraulic conductivity of clay mixed with nanomaterials." Canadian Geotechnical Journal 52, no. 6 (2015): 808–11. http://dx.doi.org/10.1139/cgj-2014-0313.

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The focus of this note is to investigate the hydraulic conductivity behavior of clay mixed with nanomaterials. Two different nanomaterials — namely, gamma-aluminum oxide powder (γ-Al2O3) and nano-copper oxide (CuO) — were selected and mixed with clay at different percentages (i.e., 2%, 4%, and 6%). Hydraulic conductivity tests were carried out in a flexible wall permeameter following the ASTM D5084 standard. Mercury intrusion porosimetry (MIP) tests were also carried out to determine the pore-size distribution. At 2% of γ-Al2O3 and nano-CuO, the hydraulic conductivity of clay decreased 30% and
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Kim, Jeongho, and Il Je Yu. "National Survey of Workplaces Handling and Manufacturing Nanomaterials, Exposure to and Health Effects of Nanomaterials, and Evaluation of Nanomaterial Safety Data Sheets." BioMed Research International 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/8389129.

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A national survey on workplace environment nanomaterial handling and manufacturing was conducted in 2014. Workplaces relevant to nanomaterials were in the order of TiO2(91), SiO2(88), carbon black (84), Ag (35), Al2O3(35), ZnO (34), Pb (33), and CeO2(31). The survey results indicated that the number of workplaces handling or manufacturing nanomaterials was 340 (0.27% of total 126,846) workplaces. The number of nanomaterials used and products was 546 (1.60 per company) and 583 (1.71 per company), respectively. For most workplaces, the results on exposure to hazardous particulate materials, incl
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Puspitasari, Poppy, Avita Ayu Permanasari, Ayu Warestu, Gilang Putra Pratama Arifiansyah, Diki Dwi Pramono, and Timotius Pasang. "Tribology Properties on 5W-30 Synthetic Oil with Surfactant and Nanomaterial Oxide Addition." Automotive Experiences 6, no. 3 (2023): 669–86. http://dx.doi.org/10.31603/ae.10115.

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This study analyzes the tribological properties of 5W-30 synthetic oil with the addition of surfactants and oxide nanomaterials. This research used SAE 5W-30 lubricant base material with the addition of Aluminum Oxide (Al2O3), Titanium Dioxide (TiO2), and Hybrid Aluminum Oxide (Al2O3) - Titanium Dioxide (TiO2) nanomaterials. The nano lubricants were synthesized using a two-step method by adding nanomaterials by 0.05% volume fraction, followed by 50 ml of 5W-30 synthetic oil and polyvinylpyrrolidone (PVP) surfactant by 0.1%. Then, it was stirred using a magnetic stirrer for 20 minutes, followed
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Bin Irfan, Muhammad Waqiuddin, and Bashir Busahmin. "Rheological Characterization and Shale Inhibition Potential of Single- and Dual-Nanomaterial-Based Drilling Fluids for High-Pressure High-Temperature Wells." Processes 13, no. 7 (2025): 1957. https://doi.org/10.3390/pr13071957.

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This study addresses the critical challenge of maintaining drilling fluid performance and wellbore stability in high-pressure, high-temperature (HPHT) environments, where conventional water-based drilling fluids often fail. This research investigates whether the integration of single- and dual-nanomaterial systems into base fluids can significantly enhance rheological behavior and shale inhibition potential. Using secondary experimental datasets and computational modeling, five nanomaterials—SiO2, Al2O3, TiO2, Fe2O3, and Fe3O4—were evaluated individually and in dual combinations with polymers.
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Zhou, Hua Xiang, Zheng Zhou, and Jing Ping Liu. "Catalysis Nanomaterial Research for NO High Temperature Cylinder." Applied Mechanics and Materials 628 (September 2014): 59–63. http://dx.doi.org/10.4028/www.scientific.net/amm.628.59.

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NO is the product in Cylinder fuel combustion at temperature. With nitrogen oxide emissions worldwide increasingly stringent standards to reduce NO emissions are the main research topics of modern environmental protection. Selective Catalytic Reduction (SCR) technology has been used outside the engine, the catalyst is researched is a more advanced. Because NO is mainly produced in the high temperature, NO is broken down in Cylinder is a more efficient and feasible approach in high temperature Catalytic. NO bonding strength decreased at a high temperature, it is easy to activation with N+ and O
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7

Singh, Prachi, and Chandra K. Dixit. "THEORETICAL STUDY OF NANOMATERIALS AT HIGH PRESSURE FROM EOSs." Journal of Dynamics and Control 9, no. 5 (2025): 269–86. https://doi.org/10.71058/jodac.v9i5022.

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In present the work, we have theoretically calculated some important thermoelastic properties of nanomaterials under high compression, such as pressure, isothermal bulk modulus and percentage deviation of pressure of nanomaterials by using four different Equation of States (EOSs): viz. (I) Birch-Murnaghan EOS, (II) Bardeen EOS (III) Poirier- Tarantola and (IV) Suzuki EOS for 37nm Al2O3, 67nm Al2O3, 3C-SiC, nano-Ni and nano-ε-Fe nanomaterials. The result shows that the pressures increase as compression increases, which is in good agreement with experimental value. The bulk modulus also increase
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8

Huseen, Hadeel, Hasan Ali Jurmut, and Kadhim Fadhil Nasir. "An Experimental Study the Effect of Nanomaterial's, Hybrid Nanomaterial's, and Composite Nanomaterial's on Heat Exchangers." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 128, no. 2 (2025): 33–50. https://doi.org/10.37934/arfmts.128.2.3350.

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This study analyzed the temperatures of the heat exchanger without, and with various levels of Al2O3 and CuO nanomaterials as the comparative parameter. It also presents the results of the analysis of the comparison of thermal conductivities, heat transfer coefficients, and overall performance of heat exchangers based on these new materials the study was conducted, checking the influence of nanomaterial TiO2 inserted in the heat exchanger. Without nanomaterials in the cup, the paper cup had a steady temperature decrease, starting at 40°C and falling to 38.2°C after 10 minutes. The temperature
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9

Jamal F. Mohammad and Alaa M. Hussein. "REDUCING THE IMPACT OF CORROSION USING NANOMATERIAL COATING." Journal of Wasit for Science and Medicine 11, no. 1 (2023): 194–99. http://dx.doi.org/10.31185/jwsm.453.

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In this paper, we try to give suggestion to prevent the corrosion of oil pipes using nanomaterials to produce high-performance coatings, for example alloy of Zn-Ni-Al2O3 nanocomposite coatings. The study of coating properties of such alloy is very important in order to obtain a high quality coating on mild steel. The effect of alumina nanoparticles on the structural properties of Zn-Ni-Al2O3 alloy for improved resistance against corrosion of this alloy coating was investigated. Thus mechanical properties will improve.
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Correia, Manuel, Toni Uusimäki, Allan Philippe, and Katrin Loeschner. "Challenges in Determining the Size Distribution of Nanoparticles in Consumer Products by Asymmetric Flow Field-Flow Fractionation Coupled to Inductively Coupled Plasma-Mass Spectrometry: The Example of Al2O3, TiO2, and SiO2 Nanoparticles in Toothpaste." Separations 5, no. 4 (2018): 56. http://dx.doi.org/10.3390/separations5040056.

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According to the current European regulation on cosmetics, any ingredient present as a nanomaterial should be indicated in the ingredient list. There is a need for analytical methods capable of determining the size of the relevant ingredients and thus assessing if these are nanomaterials or not. An analytical method based on asymmetric flow field-flow fractionation (AF4) and inductively coupled plasma-mass spectrometry (ICP-MS) was developed to determine the size of particles present in a commercial toothpaste. Multi-angle light scattering (MALS) was used for on-line size determination. The nu
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Tsikopoulos, Alexios, Konstantinos Tsikopoulos, Gabriele Meroni та ін. "Νanomaterial-Loaded Polymer Coating Prevents the In Vitro Growth of Candida albicans Biofilms on Silicone Biomaterials". Antibiotics 12, № 7 (2023): 1103. http://dx.doi.org/10.3390/antibiotics12071103.

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Early failure of silicone voice prostheses resulting from fungal colonization and biofilm formation poses a major concern in modern ear nose throat surgery. Therefore, developing new infection prevention techniques to prolong those implants’ survivorship is crucial. We designed an in vitro laboratory study to include nanomaterial-enhanced polymer coating with a plasma spraying technique against Candida albicans growth to address this issue. The anti-biofilm effects of high- and low-dose Al2O3 nanowire and TiO2 nanoparticle coatings were studied either alone or in conjunction with each other us
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12

Majeed, Amer Hameed, and Yasmin Hamed Abd. "Performance of Heat Exchanger with Nanofluids." Materials Science Forum 1021 (February 2021): 160–70. http://dx.doi.org/10.4028/www.scientific.net/msf.1021.160.

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The effect of adding nanomaterial of aluminum oxide (Al2O3), titanium oxide (TiO2) and zirconium oxide (ZrO2) in different concentrations of 0.25, 0.5, 0.75, 1.0, and 1.25 g/L to the cold fluid (water) turbulently flowing with different flow rates of 75, 100, 125, 150, and 175 L/min in tube side countercurrently to hot water flowing with a constant flow rate of 60 L/min in the shell side of shell and tube heat exchanger on the heat transfer rates and overall heat transfer coefficients are experimentally studied. It is found that the addition of nanomaterials gives rise to outlet cold (nano) fl
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13

Emmaima, Ali Mohamed, Shaban Ismael Albrka Ali, and Khalifa Salem Gallouz. "Experimental Investigation of Polymer and Nanomaterial modified Asphalt Binder." Engineering, Technology & Applied Science Research 14, no. 1 (2024): 12869–74. http://dx.doi.org/10.48084/etasr.6607.

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Modifying the asphalt binder and mixture becomes one of the best ways to mitigate pavement distress and increase the service life of constructed road networks. This study aimed to evaluate the influence of modified asphalt binders with the best different percentages of polymer and nanoparticles. Typical asphalt binder (penetration, softening point, and viscosity) and frequency sweep tests were used to evaluate the physical and rheological properties of modified asphalt binders with 5% Acrylonitrile Styrene Acrylate (ASA), 5% aluminum oxide nanoparticles (Al2O3), and 5% calcium carbonate (CaCO3
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14

Cortez-Elizalde, Jorge, Ignacio Cuauhtémoc-López, Zenaida Guerra-Que, et al. "Chemical and Structural Changes by Gold Addition Using Recharge Method in NiW/Al2O3-CeO2-TiO2 Nanomaterials." Materials 14, no. 19 (2021): 5470. http://dx.doi.org/10.3390/ma14195470.

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NiWAu trimetallic nanoparticles (NPs) on the surface of support Al2O3-CeO2-TiO2 were synthesized by a three-step synthetic method in which Au NPs were incorporated into presynthesized NiW/Al2O3-CeO2-TiO2. The recharge method, also known as the redox method, was used to add 2.5 wt% gold. The Al2O3-CeO2-TiO2 support was made by a sol–gel method with two different compositions, and then two metals were simultaneously loaded (5 wt% nickel and 2.5 wt% tungsten) by two different methods, incipient wet impregnation and ultrasound impregnation method. In this paper, we study the effect of Au addition
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15

Alfannakh, Huda, and Basma Souayeh. "Computational Assessment of ZrO2-Al2O3/EG and ZrO2-Al2O3-Cu/EG Nanomaterial on Blasius-Rayleigh-Stokes Flow Influenced by an Aligned Magnetic Field." Processes 11, no. 10 (2023): 2860. http://dx.doi.org/10.3390/pr11102860.

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In this work, the flow of a modified nanofluid is analysed as it passes over a moving surface to investigate the influence of nonlinear radiative heat transfer and the effects of magnetic fields that are aligned. In addition, ethylene glycol is used as the solvent while zirconium oxide and alumina are combined to generate a hybrid nanomaterial. Ternary nanomaterials consist of zirconium oxide, alumina, and copper dissolved in the ethylene glycol. For this mathematical model, Navier–Stokes equations were used to represent the assumed flow. The Navier–Stokes equations were approximated using the
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16

Shinyar, Muroog M., Abbas Kh Hussein, and Laith K. Abbas. "A Desirability Function for Evaluation of Corrosion Behavior for Nanocoated- Steel Using Electroless Technique." Engineering and Technology Journal 39, no. 6 (2021): 946–55. http://dx.doi.org/10.30684/etj.v39i6.2009.

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The current work is conducting an experimental investigation into the effect of those technical parameters, called nanomaterial, bath temperature and plating time on the micro-hardness and corrosion rate of electroless plated low carbon steel undergoing electroless deposition operation. It was used to prepare (Ni-P/ Nano TiO2), (Ni-P/ Nano Al2O3) and (Ni -P/ Nano SiO2) alloys in this research. The Taguchi design is used to describe the variations located within the corrosion and mechanical properties. To achieve a comprehensive study, a Taguchi-based design was used to account for all applicab
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17

Liu, Mingling, Meiling Sun, and Zhijia Wang. "Synthesis, Optical Properties and Applications of Ternary Oxide Nanoparticles by a Microwave Technique." Journal of Nanoscience and Nanotechnology 21, no. 10 (2021): 5307–11. http://dx.doi.org/10.1166/jnn.2021.19359.

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Nanocrystal preparation is in high demand due to the development of nanodevices. Nanostructures or microstructures of binary oxides such as TiO2, ZnO, and Al2O3 have been extensively prepared and studied. Synthesis of ternary oxide nanomaterials with controlled structures, morphologies, and sizes are of interest due to their potential applications in nanodevices caused by tunable energy level, bandgap, and structure. In this work, a solution-based method is used to prepare CaWO4 and LaPO4 ternary oxide nanomaterials by microwave technique. Controlled sizes and morphologies including nanorods a
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18

Huseien, Ghasan Fahim. "A Review on Concrete Composites Modified with Nanoparticles." Journal of Composites Science 7, no. 2 (2023): 67. http://dx.doi.org/10.3390/jcs7020067.

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Recently, various nanomaterials have extensively been used to achieve sustainability goals in the construction sector. Thus, this paper presents a state-of-the-art review involving the uses of different nanomaterials for production of high-performance cementitious, geopolymer, and alkali-activated concrete composites. The effects of nanomaterials on the fresh properties, mechanical properties, and durability of diverse nanoparticle-modified concrete composites are analyzed. The past developments, recent trends, environmental impact, sustainability, notable benefits, and demerits of various nan
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19

M. S. Shareef, Mahdi, Ahmed Naif Al-Khazraji, and Samir Ali Amin. "BENDING PROPERTIES OF A FUNCTIONALLY GRADED POLYMERIC COMPOSITE REINFORCED WITH A HYBRID NANOMATERIAL." IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING 21, no. 4 (2021): 302–19. http://dx.doi.org/10.32852/iqjfmme.v21i4.575.

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In this paper, functionally graded polymer hybrid nanocomposites have been produced by silica (SiO2) nanoparticles and alumina (Al2O3) nanoparticles distributed in a matrix of epoxy during the ultra-sonication via hand lay-up method. The variation in nanoparticles volume fraction (Vf.) has been given in the thickness direction for reaching the gradation. Each layer has a thickness of 1.2 mm through various concentrations of nanoparticles and is sequentially cast in acrylic moulds to fabricate the graded composite sheet with a 6 mm thickness. To fabricate the functionally graded layers, various
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20

Bhat, Faheem Sadiq, and Mohammad Shafi Mir. "Study Investigating the Influence of Warm-Mix Asphalt Additives on Rutting and Fatigue Performance of Nano-Modified Asphalt Binders." Transportation Research Record: Journal of the Transportation Research Board 2676, no. 4 (2022): 719–31. http://dx.doi.org/10.1177/03611981211064995.

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The current study investigates the synergized effect of a nanomaterial and two warm mix additives asphalt (WMA) additives on different properties of asphalt binders. The study used an optimal percentage of 2% for nano-Al2O3; two WMA additives were used in different concentrations. The results revealed that the addition of WMA additives increased the softening point of nano-Al2O3 modified asphalt binder. Penetration and ductility results showed a decrease after the introduction of WMA additives. The viscosity of nano-Al2O3 modified asphalt binders showed a reduction after the introduction of WM
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Aguilera, F., M. Cota-Leal, P. Luque, and A. Olivas. "Tungsten oxide nanomaterial interactions below monolayer coverage." Journal of Ovonic Research 20, no. 3 (2024): 405–15. http://dx.doi.org/10.15251/jor.2024.203.405.

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A tungsten oxide load at submonolayer coverage of alumina renders highly dispersed dimeric polytungstate (octahedral and distorted octahedral coordination) and isolated monotungstate (tetrahedral) species. The polytungstate/monotungstate proportion increases when approaching monolayer. Crystalline WO3 nanoparticles emerge at higher loads. All components display hexavalent oxidation; yet, tungsten‐ oxide (W–O–W) and tungsten‐ oxide‐ alumina (W–O–Al) interactions were discerned by X‐ ray photoelectron spectroscopy of the WOx/Al2O3 materials herein prepared with 1, 3, and 5 weight percentages. Th
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Danso, D. K., B. M. Negash та E. Padmanabhan. "First principle elastic property study of α-AI2O3 for application as nano-proppants". IOP Conference Series: Earth and Environmental Science 1003, № 1 (2022): 012021. http://dx.doi.org/10.1088/1755-1315/1003/1/012021.

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Abstract Slickwater hydraulic fracturing creates complex fracture networks in unconventional shale gas reservoirs. The use of spherical micron and nano-sized particles have been proposed as suitable sized materials to keep nano fractures conductive. Few materials have been investigated for occupying induced unpropped nano fractures. In this study, the nanomechanical properties of α-Al2O3, a commonly used fracture fluid nanomaterial is calculated using the density functional theory to study its pressure-dependent elasticity and hardness. The elastic properties of α-Al2O3 are calculated within t
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Liang, Chen, Xinhao Luo та Yongyou Hu. "Enhanced Ozone Oxidation by a Novel Fe/Mn@γ−Al2O3 Nanocatalyst: The Role of Hydroxyl Radical and Singlet Oxygen". Water 14, № 1 (2021): 19. http://dx.doi.org/10.3390/w14010019.

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Catalytic ozonation is a potential alternative to address the dye wastewater effluent, and developing an effective catalyst for catalyzing ozone is desired. In this study, a novel Fe/Mn@γ−Al2O3 nanomaterial was prepared and successfully utilized for catalytic ozonation toward dye wastewater effluent components (dimethyl phthalate and 1−naphthol). The synthesized Fe/Mn@γ−Al2O3 exhibited superior activity in catalytic ozonation of dimethyl phthalate and 1−naphthol in contrast to Fe@γ−Al2O3 and Mn@γ−Al2O3. Quench and probe tests indicated that HO° contributed to almost all removal of dimethyl pht
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Tlili, Iskander, R. Moradi, and M. Barzegar Gerdroodbary. "Transient nanofluid squeezing cooling process using aluminum oxide nanoparticle." International Journal of Modern Physics C 30, no. 11 (2019): 1950078. http://dx.doi.org/10.1142/s0129183119500785.

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Computational studies have been widely applied for the thermal evaluation of the nanomaterial thermal feature in different industrial and scientific issues. The squeezed flow and heat transfer features for Al2O3-water nanofluid among analogous plates are investigated using the GOHAM and its validity is verified by comparison with existing numerical results. Novel aspects of Brownian motion and thermal force were accounted in the simulation of nanomaterial flow within parallel plate. Analytical investigation has been done for diverse governing factors namely: the squeeze, chemical reaction fact
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Baragwiha, Michael Boniface, Kenedy Geofrey Fikeni, Yukun Zhao, Guodong Cheng, Han Ge, and Xueyu Pang. "Influence of Various Nanomaterials on the Rheology and Hydration Kinetics of Oil Well Cement." Materials 16, no. 19 (2023): 6514. http://dx.doi.org/10.3390/ma16196514.

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Nanomaterials have great potential to influence the properties of cement-based materials due to their small particle size and large specific surface area. The influences of Nano-SiO2 (NS), gamma-nano-Al2O3 (GNA), alpha-nano-Al2O3 (ANA), and nano-TiO2 (NT) on the rheology and hydration kinetics of class G cement at 30 °C were investigated in this study. The nanomaterials were added in dry powder form at dosages of 1, 2, 3, 5, and 7% by weight of cement (bwoc), and their dispersion was accomplished using polycarboxylate superplasticizer (PCE) at a dosage of 1.6% bwoc. PCE provides a uniform disp
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Ahmed, Naveed, Adnan, Umar Khan, et al. "Radiative Colloidal Investigation for Thermal Transport by Incorporating the Impacts of Nanomaterial and Molecular Diameters (dNanoparticles, dFluid): Applications in Multiple Engineering Systems." Molecules 25, no. 8 (2020): 1896. http://dx.doi.org/10.3390/molecules25081896.

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Thermal enhancement and irreversible phenomena in colloidal suspension (Al2O3-H2O) is a potential topic of interest from the aspects of industrial, mechanical and thermal engineering; heat exchangers; coolant car radiators; and bio-medical, chemical and civil engineering. In the light of these applications, a colloidal analysis of Al2O3-H2O was made. Therefore, a colloidal model is considered and treated numerically. The significant influences of multiple parameters on thermal enhancement, entropy generation and Bejan parameter are examined. From the presented colloidal model, it is explored t
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Awais, Muhammad, Saeed Ehsan Awan, Muhammad Asif Zahoor Raja, et al. "Heat Transfer in Nanomaterial Suspension (CuO and Al2O3) Using KKL Model." Coatings 11, no. 4 (2021): 417. http://dx.doi.org/10.3390/coatings11040417.

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Novel nonlinear power-law flux models were utilized to model the heat transport phe-nomenon in nano-micropolar fluid over a flexible surface. The nonlinear conservation laws (mass, momentum, energy, mass transport and angular momentum) and KKL cor-relations for nanomaterial under novel flux model were solved numerically. Computed results were used to study the shear-thinning and shear-thickening nature of nano pol-ymer suspension by considering n-diffusion theory. Normalized velocity, temperature and micro-rotation profiles were investigated under the variation of physical parame-ters. Shear s
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Khan, Wahid, Umar Khan, Adnan, et al. "The Effects of Magneto-Radiative Parameters on the Heat Transfer Mechanism in H2O Composed by Cu-Al2O3 Hybrid Nanomaterial: Numerical Investigation." Mathematical Problems in Engineering 2022 (May 4, 2022): 1–10. http://dx.doi.org/10.1155/2022/3098781.

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The analysis of thermal performance in second generation of nanofluids (hybrid nanofluids) attained much attention of the researchers, scientists, engineers, and industrialists. These fluids have ultra-high thermal characteristics due to which their broad applications could be found in many areas of technological world. Therefore, a novel analysis regarding the heat transfer is conducted over a stretched surface by considering combined convection, thermal radiations, and magnetic field. The hybrid nanofluid is synthesized by Cu-Al2O3 guest hybrid-nanomaterial and host liquid H2O. The hybrid fl
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Tawade, Bhausaheb V., Ikeoluwa E. Apata, Nihar Pradhan, Alamgir Karim, and Dharmaraj Raghavan. "Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications." Molecules 26, no. 10 (2021): 2942. http://dx.doi.org/10.3390/molecules26102942.

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The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely used in the formulation of advanced polymer nanocomposites. Ceramic-based polymer nanocomposites integrate key attributes of polymer and ceramic nanomaterial to improve the dielectric properties such as breakdown strength, energy density and dielectric loss. This review describes the “grafting from” and “grafting to” approaches commonly adopted to graft polyme
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Jawad, Zahraa Fakhri, Rusul Jaber Ghayyib, and Awham Jumah Salman. "Microstructural Analysis for Cement Mortar with Different Nano Materials." Materials Science Forum 1002 (July 2020): 615–26. http://dx.doi.org/10.4028/www.scientific.net/msf.1002.615.

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To study the influences of the nanomaterial upon the microstructure of the interfacial transition region of mortar that prepared with a composite binder comprising nanomaterial and to clarify its effect on the compressive strength improvement, in this study, the compressive strength, SEM analysis and XRD analysis were estimated for mortar containing different amounts of ZrO2, SiO2, Al2O3 and CaCO3 nanoparticles. Four different contents of each nanoparticles’ types were used as a partial replacement of cement with 1%, 1.5%, 3% and 5% by the weight of cement. Results manifested that the mortar c
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Soleimani, Hassan, Noor Rasyada Ahmad Latiff, Noorhana Yahya, et al. "Effect of Annealing Temperature on the Crystallization of Hematite-Alumina (Fe2O3-Al2O3) Nanocomposite and its Influence in EOR Application." Journal of Nano Research 29 (December 2014): 105–13. http://dx.doi.org/10.4028/www.scientific.net/jnanor.29.105.

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Usage of magnetic materials is not unusual in oil and gas research, specifically in enhanced oil recovery (EOR) where various magnetic micro-and nanoparticles were used to enhance sweep efficiency, reducing interfacial tension and heat generation. Magnetic nanoparticles which are activated by a magnetic field are anticipated to have the ability to travel far into the oil reservoir and assist in the displacement of the trapped oil. In this work, magnetic Fe2O3-Al2O3 nanocomposite was synthesized and characterized for its morphological, structural and magnetic properties. At an annealing tempera
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Pise, A. T., A. V. Waghmare, and V. G. Talandage. "Heat Transfer Enhancement by Using Nanomaterial in Phase Change Material for Latent Heat Thermal Energy Storage System." Asian Journal of Engineering and Applied Technology 2, no. 2 (2013): 52–57. http://dx.doi.org/10.51983/ajeat-2013.2.2.667.

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Latent heat energy storage systems using paraffin wax could have lower heat transfer rates during melting / freezing processes due to its inherent low thermal conductivity. The thermal conductivity of paraffin wax can be enhanced by employing high conductivity materials such as alumina (Al2O3) nanopowder. In this paper the experimental investigation has been carried out to study the performance enhancement of paraffin wax with nanoalumina (Al2O3) particles in mass fraction of 1, 3, and 5% in a Latent Heat Thermal Energy Storage (LHTES) System at constant flow rate and variable temperature of h
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Prokes, S. M., M. B. Katz, and M. E. Twigg. "Growth of crystalline Al2O3 via thermal atomic layer deposition: Nanomaterial phase stabilization." APL Materials 2, no. 3 (2014): 032105. http://dx.doi.org/10.1063/1.4868300.

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Elhalil, A., R. Elmoubarki, M. Farnane, et al. "Synthesis, characterization and efficient photocatalytic activity of novel Ca/ZnO-Al2O3 nanomaterial." Materials Today Communications 16 (September 2018): 194–203. http://dx.doi.org/10.1016/j.mtcomm.2018.06.005.

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35

Sheikholeslami, M., Seyyed Ali Farshad, and Ahmad Shafee. "Analysis of Al2O3 based H2O nanomaterial in a solar collector with turbulator." International Journal of Hydrogen Energy 45, no. 51 (2020): 27876–90. http://dx.doi.org/10.1016/j.ijhydene.2020.07.109.

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36

MOHAMED, MUHAMMAD KHAIRUL ANUAR, A. Hussanan, H.T. Alkasasbeh, B. Widodo, and M.Z. Salleh. "Boundary layer flow on permeable flat surface in Ag-Al2O3/water hybrid nanofluid with viscous dissipation." Data Analytics and Applied Mathematics (DAAM) 2, no. 1 (2021): 11–19. http://dx.doi.org/10.15282/daam.v2i1.6431.

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Seeking the better performance nanofluid but with low cost of production, presence challenged. Metal nanomaterial is good in both thermal and electric conductivity but expensive while oxide nanomaterial does oppositely. The present study solved numerically the laminar boundary layer flow over a permeable flat surface in a blended metal-oxide hybrid nanofluid plate with viscous dissipation effects. The similarity equations in the form of the set of ordinary differential equations are reduced from the non-linear partial differential equations before being solved numerically using the Runge-Kutta
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37

Stepankov, Mark Sergeevich. "Evaluation of bioaccumulation and toxic effect of aluminum and molybdenum oxide nanoparticles used as an active component of bactericidal agents." Toxicological Review 31, no. 3 (2023): 169–77. http://dx.doi.org/10.47470/0869-7922-2023-31-3-169-177.

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Introduction. Nanoparticles (NPs) of aluminum oxide (Al2O3) and molybdenum oxide (MoO3) have the potential to be used as an active component of bactericidal agents. At the same time, there is information in the scientific literature about the negative effects of these NPs on organism. Given that, it seems relevant to perform the study and comparative analysis of the toxicity of Al2O3 and MoO3 NPs.
 Materials and methods. We examined physical properties of Al2O3 NPs and MoO3 NPs. In an experiment on Wistar rats, peculiarities of bioaccumulation and toxic action at multiply inhalation expos
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Светлакова, А. В., М. Sanchez Mendez, Е. С. Тучина та ін. "Исследование фотокаталитической антимикробной активности нанокомпозитов на основе TiO-=SUB=-2-=/SUB=--Al-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=- при воздействии светодиодного излучения (405 nm) на стафилококки". Оптика и спектроскопия 129, № 6 (2021): 736. http://dx.doi.org/10.21883/os.2021.06.50984.9k-21.

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The photocatalytic activity of nanocomposites based on theta-modification of aluminum oxide Al2O3 with different TiO2 content for heterogeneous photocatalysis and biodegradation of pathogenic microorganisms under the action of LED radiation with a wavelength of 405 nm has been studied. It was found that all the investigated nanocomposites have photocatalytic activity. The maximum antibacterial efficiency of composites with a TiO2 content of 8 wt% (reduction of CFU of Staphylococcus aureus 209 P to 86%), which allows us to recommend this nanomaterial as a promising antimicrobial coating.
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Faraj, Sarah S., and Nabil H. Hadi. "Enhancing the Surface Mechanical Properties of AL2618 Alloy Turbochargers Using a PLD Device with AI2O3." Al-Khwarizmi Engineering Journal 20, no. 4 (2024): 89–98. https://doi.org/10.22153/kej.2024.07.004.

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Abstract Pulsed laser deposition (PLD) has become a widespread technology for the fabrication of multicomponent thin films Material. In this research, the Microstructure phase, composition and effect of paint made from A nanomaterial (Alfa- Al2O3) were study, A Pulsed laser deposition used in order to improving mechanical performance of aluminum alloy (AL-2618) of turbocharger blades, The main advantages of using it in the manufacture of turbocharger blades to reduce corrosion and erosion, and to ensure high hardness and long-life fatigue, The Pulsed laser deposition used for turbocharger blad
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Zemlyanova, Marina A., Nina V. Zaitseva, and Mark S. Stepankov. "Peculiarities of toxic effects produced by aluminum oxide nano- and microparticles under multiple inhalation exposure." Hygiene and sanitation 102, no. 5 (2023): 502–8. http://dx.doi.org/10.47470/0016-9900-2023-102-5-502-508.

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Introduction. Aluminum oxide nanoparticles (Al2O3 NPs) are widely used in nanotechnologies employed in various branches including chemical, food, and medical industry and perfume and cosmetics production. This high demand for Al2O3 NPs, given the wide-scale development of nanoindustries, can, in its turn, lead to ambient air pollution that creates public health risks under long-term exposure to it. Given that, it seems relevant to perform profound investigation with its focus on pathogenetic features of toxic effects produced by these nanoparticles and comparatively analyze them with effects p
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Avramescu, Mary-Luyza, Marc Chénier, Suzanne Beauchemin, and Pat E. Rasmussen. "Dissolution Behaviour of Metal-Oxide Nanomaterials in Various Biological Media." Nanomaterials 13, no. 1 (2022): 26. http://dx.doi.org/10.3390/nano13010026.

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Toxicological effects of metal-oxide-engineered nanomaterials (ENMs) are closely related to their distinct physical–chemical properties, especially solubility and surface reactivity. The present study used five metal-oxide ENMs (ZnO, MnO2, CeO2, Al2O3, and Fe2O3) to investigate how various biologically relevant media influenced dissolution behaviour. In both water and cell culture medium (DMEM), the metal-oxide ENMs were more soluble than their bulk analogues, with the exception that bulk-MnO2 was slightly more soluble in water than nano-MnO2 and Fe2O3 displayed negligible solubility across al
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Zamorategui-Molina, Adrían, Norma Leticia Gutiérrez-Ortega, and Julio Del-Ángel-Soto. "Cinética de la adsorción de fluoruro y arsénico usando nano-fibras de alúmina." CienciaUAT 14, no. 1 (2019): 45. http://dx.doi.org/10.29059/cienciauat.v14i1.1140.

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En muchos países del mundo, incluido México, la presencia de elementos tóxicos, como el arsénico y flúor por encima de los niveles máximos permitidos en el agua potable (0.01 mg/L y 1.5 mg/L), respectivamente está generando problemas a la salud, como el cáncer y la fluorosis esquelética, respectivamente. El objetivo de este trabajo fue determinar la cinética del proceso de adsorción del fluoruro y arsénico en soluciones sintéticas, utilizando gamma alúmina (γ-Al2O3) para establecer si el proceso se desarrolla espontáneamente. Se sintetizó γ-Al2O3 nano-fibrilar, con alta área superficial (352 m
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Hanan Obaid Kathem, Mohammed Jebur Resen, and Najwa J. Jubier. "Study the hardness, Young's modulus and impact strength of Ep/ Fe2O3 and Ep/ AL2O3 nanocomposites." Journal of Wasit for Science and Medicine 12, no. 1 (2023): 39–46. http://dx.doi.org/10.31185/jwsm.466.

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In this research, the hand lay-up method was used for the preparation of a Nano composite material consisting of epoxy resin as a matrix material, Nano iron oxide powder (Fe2O3) and Nano aluminum oxide powder (Al2O3) as a reinforcement materials with a different weight ratio of (0, 6, 10, 15) %, the effect of addition of Nanoparticles on mechanical properties was studied for both types. Some mechanical test was performed on the prepared samples (Tensile test, Hardness, and Impact strength), Results showed that the value of the hardness and elastic modulus (E) increases with increasing the Nano
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44

Yasir Al-Abayechi, Yaser Alaiwi, and Zainab Al-Khafaji. "Exploration Of Key Approaches to Enhance Evacuated Tube Solar Collector Efficiency." Journal of Advanced Research in Numerical Heat Transfer 19, no. 1 (2024): 1–14. http://dx.doi.org/10.37934/arnht.19.1.114.

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This research is carried out to investigate and examine the critical benefits and significant contributions of integrating nanoparticles into the ETSC system to enhance the thermal efficiency, thermal performance, temperature out, and energy storage of the ETSC. The Simcenter STAR-CCM+ 2022.1 software package implemented numerical analysis and thermal simulations. Further, a comparative analysis is conducted on two case studies to validate the critical role and contributions of employing the aluminum oxide nanomaterial in the solar collector system to enhance its thermal efficiency and improve
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Asaad, Lamyaa Mahdi, Iqbal Alshalal, Faten N. Al Zubaidi, and Muna Khalil Asmail. "Enhancing mechanical characteristics by adding nanoparticles and employing lasers in heat treatment." Eastern-European Journal of Enterprise Technologies 6, no. 5 (120) (2022): 42–53. http://dx.doi.org/10.15587/1729-4061.2022.269127.

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With the development of laser technology in various fields of engineering and manufacturing in terms of many uses in these areas and in the field of improving the mechanical properties of different metals for their ability to withstand different thermal and mechanical stresses and stresses. Wherein this research paper the addition of nanomaterials and laser heat shedding on them and knowing their ability to improve. The design process of the simple model that complies with the requirements of the simulation process was in the solid works program. The investigated dimensions were (100×100×10) m
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46

Vaziri, Jalil, Ali Jahan, Ehsan Borhani, Mohammad Yousefieh, and Kevin L. Edwards. "Evaluating promising applications of a new nanomaterial produced by accumulative roll bonding process: A preliminary multiple criteria decision-making approach." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 233, no. 6 (2016): 1023–32. http://dx.doi.org/10.1177/1464420716674037.

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Although many new materials are developed in laboratories, most of them do not get commercialized. The ranking of applications gives material engineers a better understanding of the advantages and disadvantages of any new or improved material under development. This is possible through simultaneously considering different technical, economic, and environmental criteria. It also helps to guide future research on developing new materials and identify the requirements that any new material must fulfill for the most fitting applications. The appropriateness of the proposed approach for evaluating
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47

Al-Maliki, Muqdad, Khaled Al-Farhany, and Ioannis E. Sarris. "Heat Transfer in an Inclined Rectangular Cavity Filled with Hybrid Nanofluid Attached to a Vertical Heated Wall Integrated with PCM: An Experimental Study." Symmetry 14, no. 10 (2022): 2181. http://dx.doi.org/10.3390/sym14102181.

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In this paper, natural convective heat transfer in a rectangular cavity filled with (50% CuO-50% Al2O3)/water hybrid nanofluids connected to a wall containing a phase change material (PCM) has been experimentally investigated. The vertical walls were heated at varying temperatures while the horizontal walls were kept adiabatic. The considered parameters were the concentration of hybrid nanomaterial (Φ = 0.03, 0.05), the cavity inclination angle (θ = 0°, 30°, 45°), and the temperature difference between the hot and cold sides (∆T = 10, 15, 20 °C). The results have been validated and agree well
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48

Alghamdi, Mohammad Ibrahim Al Mishlah, Ilhami Colak, Musaddak Maher Abdul Zahra, and T. Bothichandar. "Environmental Emission Analysis of Biodiesel with Al2O3 Nanometal Additives as Fuel in a Diesel Engine." Journal of Nanomaterials 2021 (October 21, 2021): 1–7. http://dx.doi.org/10.1155/2021/2544098.

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The exploitation of fossil fuels has fueled the modern world’s development since the industrial revolution. Other energy sources, such as wood, charcoal, and animal power, were displaced by these fuels, which were relatively easy to obtain, had low cost of production, and were easily transportable. The possibility of these fossil reserves being depleted in the medium term, combined with an increase in environmental awareness and the reality of environmental degradation, has changed the situation, reactivating the search for alternative fuels. Biofuels such as bioethanol, biomethanol, and biodi
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Abebe, Buzuayehu, and H. C. Ananda Murthy. "Synthesis, Characterization and Methyl Orange Degradation Activity of Ti-Al Oxides Nanomaterial." Material Science Research India 16, no. 3 (2019): 252–60. http://dx.doi.org/10.13005/msri/160308.

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The present work reports the synthesis of Ti-Al Oxides (TAOs) nanomaterial by an organic solvent-free impregnation method. The as-prepared products were studied by XRD, SEM-EDAX, UV-Vis, and FT-IR analytical techniques. XRD patterns revealed the fact that both TiO2 (TO)and TAOs exhibited almost similar peaks with the exception to minor peak difference in width and height which could be attributed to the alteration in the size of particles. At the calcination temperature of 500 oC, the absence of peaks for Al2O3 (AO) in the TAOs XRD pattern indicates the amorphous nature of AO. However, the app
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50

Teja, P. Narasimha Siva, S. K. Gugulothu, P. Dinesh Sankar Reddy, Abdul Ashraf, B. Deepanraj, and P. Thillai Arasu. "Numerical Study on the Thermal Enhancement of Phase Change Material with the Addition of Nanoparticles and Changing the Orientation of the Enclosure." Journal of Nanomaterials 2022 (June 6, 2022): 1–15. http://dx.doi.org/10.1155/2022/6428469.

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The global demand of the heating and cooling applications gives a larger potential to study the thermal energy storage system. Phase change materials (PCM) that are used to charge, store, and discharge the heat energy are inferior in heat transfer characteristics. The properties of PCM can be improved by adding nanoparticles, changing the orientation of the enclosure or both. Two-dimensional transient numerical analysis on the effect of Grashoff number (5000, 13000, and 20000), nanoparticle type (Al2O3, CuO, and MWCNT), and volume concentration (0%, 1%, 3%, and 5%) added in RT 42 PCM and orien
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