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Journal articles on the topic 'Cationic surfactant CTAB'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Desai, Tejas R., and Sharad G. Dixit. "Adsorption from Mixtures of Cationic/Non-Ionic Surfactants on to a Polystyrene Surface." Adsorption Science & Technology 15, no. 5 (1997): 391–405. http://dx.doi.org/10.1177/026361749701500507.

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The adsorption of cetyltrimethylammonium bromide (CTAB) and nonyl phenyl ethoxylates (NP-n, where n = 13, 20 and 30) on to polystyrene powder has been studied. Concentrations of surfactant solutions ranging from below CMC to well above CMC were investigated. In a single surfactant system, only the cationic surfactant (CTAB) was found to adsorb appreciably while nonionic surfactants showed negligible adsorption. In mixed surfactant systems, the cationic surfactant was found to induce significant co-adsorption of non-ionic surfactants. The increased adsorption of non-ionic surfactants has been a
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2

Hosseinzadeh, Reza, Mohammad Gheshlagi, Rahele Tahmasebi, and Farnaz Hojjati. "Spectrophotometric study of interaction and solubilization of procaine hydrochloride in micellar systems." Open Chemistry 7, no. 1 (2009): 90–95. http://dx.doi.org/10.2478/s11532-008-0078-4.

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AbstractThe interaction of Procaine hydrochloride (PC) with cationic, anionic and non-ionic surfactants; cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and triton X-100, were investigated. The effect of ionic and non-ionic micelles on solubilization of Procaine in aqueous micellar solution of SDS, CTAB and triton X-100 were studied at pH 6.8 and 29°C using absorption spectrophotometry. By using pseudo-phase model, the partition coefficient between the bulk water and micelles, Kx, was calculated. The results showed that the micelles of CTAB enhanced the solubility of Procai
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3

Aramaki, Kenji, Eriko Takimoto, and Takumi Yamaguchi. "Effect of the Cationic Head Group on Cationic Surfactant-Based Surfactant Mediated Gelation (SMG)." International Journal of Molecular Sciences 21, no. 21 (2020): 8046. http://dx.doi.org/10.3390/ijms21218046.

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The surfactant-mediated gelation (SMG) method allows us to formulate hydrogels using a water-insoluble organogelator. In this study, we formulated hydrogels using three cationic surfactants, hexadecyltrimethylammonium bromide (CTAB), hexadecyltrimethylammonium chloride (CTAC), and hexadecylpyridinium chloride (CPC)] and an organogelator (12-hydroxyoctadecanoic acid (12-HOA), and studied their structures and mechanical properties. A fiber-like structure similar to that found in the 12-HOA-based organogels was observed by optical microscopy. Small- and wide-angle X-ray scattering profiles showed
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4

Yehia, Ahmed, Asem A. Atia, and Badr G. Ateya. "Comparative Adsorption of Cationic and Anionic Surfactants on Fluorite." Adsorption Science & Technology 16, no. 6 (1998): 431–38. http://dx.doi.org/10.1177/026361749801600602.

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The adsorption behaviours of cetyltrimethylammonium bromide (CTAB) and dioctyl sodium sulphosuccinate (AOT) on fluorite mineral were analyzed as examples of the adsorption of cationic and anionic surfactants on salt-type minerals. Although both surfactants gave adsorption densities well below the monolayer capacity, there were considerable differences between the behaviours of the two surfactants. Thus, while the adsorption density of CTAB increased to a plateau value, that of AOT increased to a maximum before decreasing to very low values at high equilibrium concentrations of the surfactant.
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5

Kuang, Yu, Xiaoping Zhang, and Shaoqi Zhou. "Adsorption of Methylene Blue in Water onto Activated Carbon by Surfactant Modification." Water 12, no. 2 (2020): 587. http://dx.doi.org/10.3390/w12020587.

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In this paper, the enhanced adsorption of methylene blue (MB) dye ion on the activated carbon (AC) modified by three surfactants in aqueous solution was researched. Anionic surfactants—sodium lauryl sulfate (SLS) and sodium dodecyl sulfonate (SDS)—and cationic surfactant—hexadecyl trimethyl ammonium bromide (CTAB)—were used for the modification of AC. This work showed that the adsorption performance of cationic dye by activated carbon modified by anionic surfactants (SLS) was significantly improved, whereas the adsorption performance of cationic dye by activated carbon modified by cationic sur
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6

Sakač, Nikola, Dean Marković, Bojan Šarkanj, et al. "Direct Potentiometric Study of Cationic and Nonionic Surfactants in Disinfectants and Personal Care Products by New Surfactant Sensor Based on 1,3-Dihexadecyl−1H-benzo[d]imidazol−3-ium." Molecules 26, no. 5 (2021): 1366. http://dx.doi.org/10.3390/molecules26051366.

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A novel, simple, low-cost, and user-friendly potentiometric surfactant sensor based on the new 1,3-dihexadecyl−1H-benzo[d]imidazol−3-ium-tetraphenylborate (DHBI–TPB) ion-pair for the detection of cationic surfactants in personal care products and disinfectants is presented here. The new cationic surfactant DHBI-Br was successfully synthesized and characterized by nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR) spectrometry, liquid chromatography–mass spectrometry (LC–MS) and elemental analysis and was further employed for DHBI–TPB ion-pair preparation. The sensor gave excel
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7

Cheng, Chao, and Shi-Yong Ran. "Interaction between DNA and Trimethyl-Ammonium Bromides with Different Alkyl Chain Lengths." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/863049.

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The interaction betweenλ—DNA and cationic surfactants with varying alkyl chain lengths was investigated. By dynamic light scattering method, the trimethyl-ammonium bromides-DNA complex formation was shown to be dependent on the length of the surfactant’s alkyl chain. For surfactants with sufficient long alkyl chain (CTAB, TTAB, DTAB), the compacted particles exist with a size of ~60–110 nm at low surfactant concentrations. In contrast, high concentration of surfactants leads to aggregates with increased sizes. Atomic force microscope scanning also supports the above observation. Zeta potential
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8

Kuan, Wen-Hui, Yu-Jung Liu, and Ching-Yao Hu. "Effects of Surfactants on the Degradation of Diclofenac by Manganese Oxide." International Journal of Environmental Research and Public Health 17, no. 12 (2020): 4513. http://dx.doi.org/10.3390/ijerph17124513.

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Amine-containing pharmaceuticals are the most often detected pharmaceuticals in wastewater and ambient aquatic environments. They can usually be degraded by manganese oxide (MnO2), which is a common natural oxidant in soils. Surfactants often coexist with pharmaceuticals in wastewater. Some amine-containing pharmaceuticals, such as diclofenac (DIC), are acidic and are thus ionic compounds in neutral conditions. These compounds, therefore, have similar properties to surfactants. Surfactants, thus, may influence the adsorption and degradation processes of DIC by MnO2. The effect of the type of s
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9

Khanal, Manoj. "Study of Methyl Orange-Cetyltrimethyl Ammonium Bromide Interaction by Conductivity Method in Methanol-Water Mixed Solvent Media." International Journal of Applied Sciences and Biotechnology 5, no. 2 (2017): 172–79. http://dx.doi.org/10.3126/ijasbt.v5i2.17622.

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The interaction of an anionic dye (Methyl Orange) with cationic surfactant (Cetyltrimethylammonium Bromide, CTAB) in the series of solvent containing variable compositions of methanol-water mixture (10%, 20%, 30% and 40%) was studied at room temperature (31±2oC). Conductivity measurements were done for the investigation of interaction of dyes. The specific conductance of 6.58x10-5 M to 59.22x10-5M surfactant (CTAB) and these surfactants with 1.008x10-3M dye (MO) mixtures were noted at room temperature. A theoretical model was used to calculate conductance ratio from the data of measured specif
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10

Salimi, E., J. Javadpour, and M. Anbia. "Template-Based Synthesis of Nanoporous Hydroxyapatite." ISRN Ceramics 2012 (October 17, 2012): 1–6. http://dx.doi.org/10.5402/2012/960915.

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Hydroxyapatite (HAp) particles, a potential starting material for bone substitutes, with nanopores were synthesized in the presence of cetyltrimethylammonium bromide (CTAB) and P123 as cationic and nonionic surfactants as the structuring units. Effect of nonionic surfactant concentration on surface areas is also investigated. Based on N2 adsorption-desorption isotherms investigation, surface area increased up to 50 m2/g by using P123 and 147 m2/g by using CTAB as porosity agent. Pore structure remained even after the removal of surfactant and calcinations at 400°C.
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11

Bai, Yun, Jie Zhang, Sanbao Dong, et al. "The Effect of Halide Counter Ions and Methanol on the Foaming Behavior of Cationic Surfactants and a Mechanism Study." Tenside Surfactants Detergents 58, no. 4 (2021): 278–86. http://dx.doi.org/10.1515/tsd-2020-2256.

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Abstract In this work, four quaternary ammonium cationic surfactants including cetyltrimethyl ammonium fluoride (CTAF), cetyltrimethyl ammonium chloride (CTAC), cetyltrimethyl ammonium bromide (CTAB) and cetyltrimethyl ammonium iodide (CTAI) were investigated to study the effect of halide anions on the surface activity and foaming performance. The result showed that CTAF had superior surface activity, which could reduce the surface tension of water to 33.15 mN/m at a low CMC (critical micelle formation concentration) of 1.65 mmol/L. Based on the calculation of Amin (the minimum occupied area p
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12

Rahman, Mohammad Mijanur, M. Yousuf A. Mollah, M. Muhibur Rahman, and Md Abu Bin Hasan Susan. "Electrochemical Behavior of Malachite Green in Aqueous Solutions of Ionic Surfactants." ISRN Electrochemistry 2013 (September 30, 2013): 1–10. http://dx.doi.org/10.1155/2013/839498.

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Electrochemical behavior of malachite green (MG) oxalate in aqueous solution was studied in the presence of a cationic surfactant, cetyltrimethylammonium bromide (CTAB), and an anionic surfactant, sodium dodecyl sulfate (SDS) at a glassy carbon electrode using cyclic voltammetry. The electrochemical oxidation of MG has been characterized as an electrochemically irreversible diffusion-controlled process. Oxidative peak current sharply decreased with increasing SDS concentration, while a slight increase with increasing [CTAB] was apparent. The apparent diffusion coefficient, the surface reaction
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13

Reddy, M. C. Somasekhara, S. M. Sarvar Jahan, K. Sridevi, and G. V. Subba Reddy. "Investigations on Natural Surfactant obtained from Soap-Nuts through Spectrophotometric Interactions with Congo Red and Comparison with Commercial Surfactants." Asian Journal of Chemistry 31, no. 4 (2019): 907–16. http://dx.doi.org/10.14233/ajchem.2019.21849.

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A natural surfactant (NS) of plant-base was obtained from the fruit pericarp of soapnuts by using a simple and economical method. The interaction of this natural surfactant with direct dye, anionic dye, Congo red (CR) was studied spectrophotometrically in sub-micellar and micelle concentration range in aqueous solution. These interactions (CR-NS) were compared with that of CR-CTAB (cationic surfactant-cetyl trimethylammonium bromide, CTAB), CR-SDS (anionic surfactant-sodium dodecyl sulphate, SDS) and CR-TX 100 (neutral surfactant - Triton X-100, TX 100) and were useful to understand the nature
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14

Mezei, Amalia, and Ramon Pons. "MWNTs or PEG as Stability Enhancers for DNA–Cationic Surfactant Gel Particles." International Journal of Molecular Sciences 22, no. 16 (2021): 8801. http://dx.doi.org/10.3390/ijms22168801.

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Cationic surfactants interact with DNA (Deoxyribonucleic acid), forming surfactant-DNA complexes that offer particularly efficient control for encapsulation and release of DNA from DNA gel particles. In the present work, DNA-based particles were prepared using CTAB (Cetyltrimethylammonium bromide) as the cationic surfactant and modified using two different additives: (Multi-Walled Carbon Nanotubes) MWNT or PEG (Poly Ethylene Glycol). The use of both additives to form composites increased the stability of the gel particles. The stability was monitored by the release of DNA and CTAB in different
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15

Yilma, Qidist, Dunkana Negussa, and Y. Dominic Ravichandran. "Effect of Cationic/Anionic Mixed Micelles on Reaction Kinetics of Alkaline Hydrolysis of Crystal Violet." Asian Journal of Chemistry 31, no. 3 (2019): 651–55. http://dx.doi.org/10.14233/ajchem.2019.21701.

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Kinetics of alkaline hydrolysis of crystal violet, a triphenylmethane dye in the micellar environment of cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfonate (SDS) and binary mixtures of these surfactants was studied. The regression parameters, together with rate constants and binding constants were obtained by analyzing the rate surfactant profiles using cooperativity model. It was observed that the reaction was catalyzed by both surfactants. The catalytic factor increased by 10 times in SDS and 38 times in CTAB indicating that binding of crystal violet to the micellar surface is s
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Kochkodan, Olga, Nadiya Antraptseva, and Viktor Kochkodan. "Mixed Adsorption of Cetyltrimethylammonium Bromide and Triton X-100 Surfactants on Carbon Black." Materials Science Forum 936 (October 2018): 8–13. http://dx.doi.org/10.4028/www.scientific.net/msf.936.8.

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Adsorption of cationic cetyltrimethylammonium bromide (CTAB) and nonionic Triton X100 surfactants from their mixed aqueous solutions on graphitized carbon black (CB) have been studied. The adsorption isotherms of CTAB or Triton X100 from single solutions on CB surface shown to be of the Langmuir type. In the mixed solutions of CTAB and Triton X100 surfactants, the adsorption of CTAB or Triton X100 on CB decreased in the presence of the other surfactant due to competitive adsorption of the components. It was shown that the mole fraction of Triton X-100 on CB surface has been essentialy changed
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17

Roslyk, Iryna, Ganna Stovpchenkoko, and Galyna Galchenko. "Influence of Surfactants on Copper-CNTs Electrodeposition." Chemistry & Chemical Technology 15, no. 1 (2021): 125–31. http://dx.doi.org/10.23939/chcht15.01.125.

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Influence of different types of surfactants on electrodeposition of copper- and carbon-bearing (graphite, carbon nanotubes (CNTs)) composite powder has been experimentally investigated. The size of powder particles decreased, and corrosion resistance increased when surfactants were added. Addition of cationic surfactant CTAB to the electrolyte with simultaneous ultrasonic treatment for CNTs dispersion gives maximum effect.
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18

Avramova, Tatyana, Lilyana Stefanova, Blaga Angelova, and Sava Mutafov. "Bacterial Decolorization of Acid Orange 7 in the Presence of Ionic and Non-Ionic Surfactants." Zeitschrift für Naturforschung C 62, no. 1-2 (2007): 87–92. http://dx.doi.org/10.1515/znc-2007-1-216.

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The effects of the non-ionic surfactant Triton® X-100, the cationic surfactant cetyltrimethylammonium bromide (CTAB) and the anionic surfactant sodium N-lauroyl sarcosinate (SLS) on the decolorization of the reaction medium containing the monoazo dye Acid Orange 7 (AO7) by Alcaligenes faecalis and Rhodococcus erythropolis were studied. It was found that the surfactants influenced in different ways the rate of decolorization. At all concentrations tested the non-ionic surfactant Triton X-100 decreased the decolorization rate of R. erythropolis. At concentrations above the critical micelle conce
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Silva, Amélia, Carlos Martins-Gomes, Tiago Coutinho, et al. "Soft Cationic Nanoparticles for Drug Delivery: Production and Cytotoxicity of Solid Lipid Nanoparticles (SLNs)." Applied Sciences 9, no. 20 (2019): 4438. http://dx.doi.org/10.3390/app9204438.

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The surface properties of nanoparticles have decisive influence on their interaction with biological barriers (i.e., living cells), being the concentration and type of surfactant factors to have into account. As a result of different molecular structure, charge, and degree of lipophilicity, different surfactants may interact differently with the cell membrane exhibiting different degrees of cytotoxicity. In this work, the cytotoxicity of two cationic solid lipid nanoparticles (SLNs), differing in the cationic lipids used as surfactants CTAB (cetyltrimethylammonium bromide) or DDAB (dimethyldio
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20

ul Haq, Naveed, Muhammad Usman, Ajaz Hussain, et al. "Partitioning of reactive yellow 86 between aqueous and micellar media studied by differential absorption spectroscopy." Canadian Journal of Chemistry 95, no. 6 (2017): 697–703. http://dx.doi.org/10.1139/cjc-2016-0442.

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The present study describes the partitioning of a reactive dye, reactive yellow 86, between aqueous and micellar media of a cationic surfactant (cetyltrimethyl ammonium bromide, CTAB), as well as an anionic surfactant (sodium dodecyl sulphate, SDS). In a systematic investigation, we have recorded the UV–vis absorption spectra of the dye as a function of surfactant’s concentration above and below the critical micelle concentration (CMC). Absorption spectra display a red shift in the case of CTAB and a hypochromic shift upon using SDS. The partition coefficient (Kx) was calculated using differen
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Ruhsing Pan, J., C. Huang, and C. Gang Fu. "Effect of surfactant on alum sludge conditioning and dewaterability." Water Science and Technology 41, no. 8 (2000): 17–22. http://dx.doi.org/10.2166/wst.2000.0137.

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Sludge disposal has become a new challenge for the Taiwan government due to the increasing demand for better quality and greater quantity of water. In some water treatment plants, surfactant has been applied in the flotation process to improve its performance, which suggests the use of surfactant in sludge conditioning. In this study, effects of surfactants on the conditioning of the alum sludge collected from Feng-Yuan Water Treatment Plant were investigated. Surfactants of various charges, namely CTAB and SDS, were added to sludge samples in various amounts, and their effects on sludge dewat
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22

Klimonda, A., and I. Kowalska. "Application of polymeric membranes for the purification of solutions containing cationic surfactants." Water Science and Technology 79, no. 7 (2019): 1241–52. http://dx.doi.org/10.2166/wst.2019.115.

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Abstract The aim of the study was to examine physicochemical properties of three cationic surfactants and to evaluate the effectiveness of their removal with the use of polymeric membranes. The experiments were performed in a laboratory scale set-up with the use of Microdyn-Nadir® nanofiltration and ultrafiltration membranes. Cetrimonium bromide (CTAB), benzalkonium chloride (BAC) and Tequat LC90i (TEAQ) were chosen for the test. In the experiments, surfactant solutions in a wide range of concentration were treated (50–3,000 mg L−1). The experimental research included evaluation of the effect
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23

Baghdadi, Majid, Mahmoud Mazarji, Mohammad Sabouhi, Abbass Jafari Kang, and Aghdas Jafari. "Removal of Cationic Surfactants from Aqueous Solutions by Modified Cotton as a Novel High Capacity and Low Cost Adsorbent." JOURNAL OF ADVANCES IN CHEMISTRY 9, no. 3 (2013): 2062–71. http://dx.doi.org/10.24297/jac.v9i3.1013.

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Direct and indirect releases of large quantities of surfactants to the environment may result in serious health and environmental problems. Therefore, surfactants should be removed from water before release to the environment or delivery for public use. Using cotton-based adsorbent may be an effective technique to remove surfactants. In this study, the removal of cationic surfactants by modified cotton was investigated. N-Cetyl-N,N,N-trimethylammonium bromide (CTAB) was selected as a cationic surfactant for the experiments. The results revealed that the modified cotton has a high affinity towa
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24

Zulfajri, Muhammad, Wei-Jie Huang, Genin-Gary Huang, and Hui-Fen Chen. "Effects of Different Surfactant Charges on the Formation of Gold Nanoparticles by the LASiS Method." Materials 14, no. 11 (2021): 2937. http://dx.doi.org/10.3390/ma14112937.

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The laser ablation synthesis in solution (LASiS) method has been widely utilized due to its significant prospects in laser microprocessing of nanomaterials. In this study, the LASiS method with the addition of different surfactant charges (cationic CTAB, nonionic TX-100, and anionic SDS) was used to produce Au NPs. An Nd:YAG laser system at 532 nm excitation with some synthetic parameters, including different laser fluences, ablation times, and surfactant concentrations was performed. The obtained Au NPs were characterized by UV-Vis spectroscopy, transmission electron microscopy, and zeta pote
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Kaczerewska, Olga, Isabel Sousa, Roberto Martins, Joana Figueiredo, Susana Loureiro, and João Tedim. "Gemini Surfactant as a Template Agent for the Synthesis of More Eco-Friendly Silica Nanocapsules." Applied Sciences 10, no. 22 (2020): 8085. http://dx.doi.org/10.3390/app10228085.

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Silica mesoporous nanocapsules are a class of “smart” engineered nanomaterials (ENMs) applied in several fields. Recent studies have highlighted that they can exert deleterious effects into marine organisms, attributed to the use of the toxic cationic surfactant N-hexadecyl-N,N,N-trimethylammonium bromide (CTAB) during the synthesis of ENMs. The present study reports the successful synthesis and characterization of novel gemini surfactant-based silica nanocapsules. The gemini surfactant 1,4-bis-[N-(1-dodecyl)-N,N-dimethylammoniummethyl]benzene dibromide (QSB2-12) was chosen as a more environme
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Doong, Ruey-an, Ya-Wen Wu, and Wen-gang Lei. "Surfactant enhanced remediation of cadmium contaminated soils." Water Science and Technology 37, no. 8 (1998): 65–71. http://dx.doi.org/10.2166/wst.1998.0309.

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An investigation involving the addition of surfactant to remediate cadmium-contaminated soils was performed to determine the optimal surfactant enhanced remediation system. Anionic (sodium dodecyl sulfate, SDS), nonionic (Triton X-100, TX100) and cationic (cetyltrimethylammonium bromide, CTAB) surfactants were used to elucidate the extraction efficiency of surfactant. EDTA and diphenylthiocarbazone (DPC) were also added to enhance the extraction efficiencies of surfactants. Moreover, the pH effect was examined to determine the optimal surfactant systems. The addition of anionic and nonionic su
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Tazhibayeva, Sagdat, Kuanyshbek Musabekov, Zhenis Kusainova, Ardak Sapieva, and Nurlan Musabekov. "Complex Formation of Polyacrylic Acid with Surfactants of Different Hydrophobicity." Applied Mechanics and Materials 752-753 (April 2015): 212–16. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.212.

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Complex formation processes of polyelectrolytes with surfactant ions are close model to protein - lipid interactions in living organisms. Furthermore, polymer – surfactant complexes are widely used as stabilizers of industrial dispersions and structurants of soil. When using the polymer-surfactant complexes the hydrophilic-lipophilic balance has the great importance. The interaction of polyacrylic acid with alkylammonium salts of different hydrophobicity: cetyltrimethylammonium bromide, dilaurildimethylammonium bromide and dioctadecyldimethylammonium chloride was studied by potentiometry, spec
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Hosseinzadeh, Reza, and Mohammad Gheshlagi. "Interaction and micellar solubilization of diclofenac with cetyltrimethylammonium bromide: A spectrophotometric study." Collection of Czechoslovak Chemical Communications 74, no. 3 (2009): 503–13. http://dx.doi.org/10.1135/cccc2008021.

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In this study, the interaction of diclofenac (Dic) with cationic surfactant cetyltrimethylammonium bromide (CTAB) was investigated. The effect of cationic micelles on solubilization of diclofenac in aqueous micellar solution was studied at pH 6.8, 29 °C and various drug concentrations. The binding of diclofenac to CTAB micelles was accompanied by a batochromic shift in the drug absorption spectra. The solubility of diclofenac increased with increasing surfactant concentration as a consequence of the association between the drug and micelles. From the results, the binding constants Kb, was obta
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Tian, Maozhang, Fan Zhang, Lu Wang, Xing Dong, Lifei Zhang, and Xia Guo. "Activity of Polyphenoloxidase in red Fuji Apples Promoted with Cationic Surfactant – Role of Surfactant Structure." Tenside Surfactants Detergents 58, no. 5 (2021): 383–93. http://dx.doi.org/10.1515/tsd-2020-2322.

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Abstract In this study, we observed the activity of polyphenoloxidase (PPO) in red Fuji apples in the presence of single-chained surfactants (including cetyl trimethyl ammonium bromide (CTAB), and dodecyl trimethyl ammonium bromide (DTAB)) and gemini surfactants (pentamethylene-α,ω-bis(dodecyl dimethyl ammonium bromide), octamethylene-α,ω-bis(dodecyl dimethyl ammonium bromide, dodecamethylene-α,ω-bis(dodecyl dimethyl ammonium bromide), pentamethylene-α,ω-bis(cetyl dimethyl ammonium bromide), and octamethylene-α,ω-bis(cetyl dimethyl ammonium bromide)). It was found that all these surfactants en
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Acharyya, Shankha S., Shilpi Ghosh, and Rajaram Bal. "Fabrication of three dimensional (3D) hierarchical Ag/WO3 flower-like catalyst materials for the selective oxidation of m-xylene to isophthalic acid." Chemical Communications 51, no. 27 (2015): 5998–6001. http://dx.doi.org/10.1039/c5cc00351b.

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Wang, Chunjie, Aihua Zhang, and Hamid Reza Karimi. "Effects of Surfactants on the Performance ofCeO2Humidity Sensor." Mathematical Problems in Engineering 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/723050.

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NanosizedCeO2powders were synthesized via hydrothermal method with different types of surfactants (polyethylene glycol (PEG), cetyltrimethylammonium bromide (CTAB), and sodium dodecylbenzenesulfonate (SDBS)). X-ray diffraction, Raman spectroscopy, and transmission electron microscopy were utilized to characterize the phase structures and morphologies of the products. The sample with CTAB as surfactant (CeO2-C) has the largest specific surface area and the smallest particle size among these three samples. The humidity sensor fabricated byCeO2-C shows higher performance than those usedCeO2-P and
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Dantoni, Patrícia, Ana Clara B. Rodrigues, Margareth Mie N. Matsuda, and Nina Coichev. "Effect of some surfactants on the chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate and bis(2-nitrophenyl)oxalate with hydrogen peroxide." Canadian Journal of Chemistry 90, no. 6 (2012): 534–41. http://dx.doi.org/10.1139/v2012-025.

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The chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate (TCPO) and bis(2-nitrophenyl)oxalate (2-NPO) with hydrogen peroxide in acetonitrile/water micellar systems (anionic, cationic, and non-ionic) and γ-cyclodextrin were studied in the presence of fluoranthene or 9,10-diphenylanthracene, imidazole, and two buffer solutions, HTRIS+/TRIS and H2PO4–/HPO42–. The relative chemiluminenscence (CL) intensity is higher in the presence of the cationic (DDAB, CTAC, DODAC, and OTAC), anionic (SDS), and non-ionic (Tween 80) surfactants. In the presence of some non-ionic surfactants (Brij 35, B
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Andrew Lin, Kun-Yi, Hongta Yang, and Wei-Der Lee. "Enhanced removal of diclofenac from water using a zeolitic imidazole framework functionalized with cetyltrimethylammonium bromide (CTAB)." RSC Advances 5, no. 99 (2015): 81330–40. http://dx.doi.org/10.1039/c5ra08189k.

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Noirjean, Cecile, Fabienne Testard, Christophe Dejugnat, Jacques Jestin, and David Carriere. "Molten fatty acid based microemulsions." Physical Chemistry Chemical Physics 18, no. 23 (2016): 15911–18. http://dx.doi.org/10.1039/c6cp00533k.

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We show that ternary mixtures of water (polar phase), myristic acid (MA, apolar phase) and cetyltrimethylammonium bromide (CTAB, cationic surfactant) studied above the melting point of myristic acid allow the preparation of microemulsions without adding a salt or a co-surfactant.
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35

Seyfoori, Amir, Hamideh Mahmoodzadeh Hosseini, Abbas Ali Imani Fooladi, and Mohammad Reza Nourani. "Synthesize and Characterization of Hollow Hydroxyapatite Nanopowders with Different Morphologies: Role of Cationic and Non-Ionic Surfactants." Advanced Materials Research 829 (November 2013): 268–73. http://dx.doi.org/10.4028/www.scientific.net/amr.829.268.

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Today, hydroxyapatite hollow nanopowders have attracted the attention of researchers as a reliable option for drug and protein delivery systems. In this study, nanohydroxyapatite powders with different morphologies were successfully synthesized via wet chemical precipitation method. Elongated rice-shape and semi-spherical nanopowders with hollow structures were synthesized using CTAB and the mixture of cetyltrimethylammonium bromide (CTAB) and polyethylene glycol (PEG) as surfactants respectively. The properties of these nanopowders were charecterized by means of scanning electron microscopy,
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36

Vadivel, M., R. Ramesh Babu, K. Ramamurthi, and M. Arivanandhan. "CTAB cationic surfactant assisted synthesis of CoFe2O4 magnetic nanoparticles." Ceramics International 42, no. 16 (2016): 19320–28. http://dx.doi.org/10.1016/j.ceramint.2016.09.101.

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37

Zueva, O. S., Y. K. Mongush, and A. O. Makarova. "Carbon Nanotubes Microenvironment in Ionic Surfactant Water Solutions." Solid State Phenomena 284 (October 2018): 713–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.284.713.

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The processes of aggregation of anionic (SDS) and cationic (CTAB) molecules into supramolecular formations and the effect of carbon nanotubes on the processes were investigated by conductometry and tensiometry methods. Concentration dependences of the specific electrical conductivity and surface tension of aqueous SDS and CTAB dispersions and suspensions of carbon nanotubes of the carbon nanomaterial Taunit in these dispersions were obtained. A conclusion on the change in the conformation of CTAB micelles in the presence of carbon nanotubes was drawn. A significant increase in the packing dens
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38

Shokuhfar, Ali, S. Alibeigi, Mohammad Reza Vaezi, and Sayed Khatiboleslam Sadrnezhaad. "Synthesis of Fe3O4 Nanoparticles Prepared by Various Surfactants and Studying their Characterizations." Defect and Diffusion Forum 273-276 (February 2008): 22–27. http://dx.doi.org/10.4028/www.scientific.net/ddf.273-276.22.

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Magnetite (Fe3O4) nanoparticles were prepared simply by the reverse co-precipitation method from the solution of ferrous/ferric mixed salt in the presence of cationic surfactant (cetyl trimethyl ammonium bromide, CTAB) and nonionic surfactant (Polyethylene glycol, PEG) in two concentrations. Meanwhile, Fe3O4 nanoparticles without surfactant are also synthesized under the same condition for comparison. In addition via the reverse co-precipitation method, the pH which is an important factor in synthesis of magnetite was controlled at high values easily. The experimental results reveal that addit
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39

Liu, Da Yong, and Jie Yu. "The Influence of CTAB Surfactant on the Dispersion of Al2O3 Particles and Deposition Rate of Electroless Ni-P-Al2O3 Coatings." Advanced Materials Research 1095 (March 2015): 641–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.641.

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In this paper, electroless Ni-P-Al2O3coatings have been synthesized on mild steel shaft by adding various concentration of cetyltrimethyle ammonium bromide (CTAB) into plating baths. Compared with Polyvinyl pyrrolidone (PVPk30), cationic surfactant CTAB shows better effect in dispersing the Al2O3particles. With the increasing of CTAB concentration in the plating baths, dispersion of Al2O3particles in the Ni-P-Al2O3coatings was improved due to high electrostatic repulsive force between Al2O3particles and CTAB molecular, whereas deposition rate of the Ni-P-Al2O3coatings was decreased.
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40

Abdi, Mahnaz M., Nur Farhana Waheeda Mohd Azli, Hong Ngee Lim, et al. "Polypyrrole/tannin biobased nanocomposite with enhanced electrochemical and physical properties." RSC Advances 8, no. 6 (2018): 2978–85. http://dx.doi.org/10.1039/c7ra13378b.

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Tannin (TA) extracted from Acacia mangium and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), were used to modify and enhance the physical and electrochemical properties of polypyrrole (PPy) composite.
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41

Chen, Kan Lin, Chien Jung Huang, Pin Hsiang Chiu, and Yeong Her Wang. "Synthesis of the Gold Nanocubes by Electrochemical Method with Surfactant Solution and Acetone Solvent Addition." Key Engineering Materials 434-435 (March 2010): 434–37. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.434.

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Monodispersed gold nanocubes of highly uniform size were fabricated by a simple electrochemical method. The lengths of the edges of the gold nanocubes were about 30 nm. The growth solution was prepared from two cationic surfactant solutions as micelle templates with added acetone solvent. The primary surfactant was hexadecyltrimethylammonium bromide (CTAB) and the co-surfactant was tetradodecylammonium bromide (TTAB).
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42

Li, Yin Ming, and Fu Shen Zhang. "Characterization of a Sorbent Derived from Construction and Demolition Waste." Advanced Materials Research 878 (January 2014): 199–205. http://dx.doi.org/10.4028/www.scientific.net/amr.878.199.

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Construction and demolition waste (C&D) was employed as a raw material to synthesize sorbent by fusion-hydrothermal process in order to effectively use this type of waste material. The specific surface area and the cation exchange capacity (CEC) values of the sorbent were 308.2 m2 g-1 and 625.6 mmol/100 g-1, respectively. It was found that the sorbent was quite effective for ammonium ion due to the high CEC value. The sorbent possessed high PFOS sorption capacities after load with cationic surfactant (Cetyltrimethyl Ammonium Bromide, CTAB), the sorption capacities of CTAB-modified sorbents
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43

Mohamed, Dalia Emam, Nabel A. Negm, and Marwa R. Mishrif. "Micellization and Interfacial Interaction Behaviors of Gemini Cationic Surfactants–CTAB Mixed Surfactant Systems." Journal of Surfactants and Detergents 16, no. 5 (2013): 723–31. http://dx.doi.org/10.1007/s11743-013-1477-x.

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44

Stoichev, Teodor, Paulo de Morais, M. Clara P. Basto, and M. Teresa S. D. Vasconcelos. "Interferences of Surfactants During Determination of Chlorophenols by Acetylation Coupled to Headspace-Solid Phase Microextraction-Gas Chromatography with an Electron Capture Detector." Journal of AOAC INTERNATIONAL 98, no. 2 (2015): 524–28. http://dx.doi.org/10.5740/jaoacint.14-126.

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Abstract The micellar extraction (ME) of chlorophenols (CPs) from solid samples is rapid and avoids the use of organic solvents. The cationic surfactant cetyltrimethylammonium bromide (CTAB) is a powerful agent for ME of CPs. However, CTAB will be an important interference when the extracts are subsequently analyzed by direct solid phase microextraction (SPME) without a previous derivatization step. Therefore, CTAB is usually replaced by the nonionic surfactant polyoxyethylene-10-lauryl ether (POLE), which causes less interference but is less efficient in extracting CPs. In order to assess to
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45

Zhou, Mingsong, Wenli Wang, Dongjie Yang, and Xueqing Qiu. "Preparation of a new lignin-based anionic/cationic surfactant and its solution behaviour." RSC Advances 5, no. 4 (2015): 2441–48. http://dx.doi.org/10.1039/c4ra10524a.

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46

Rashid, Sadaf, Muhammad Usman, Tanvir Shahzad, et al. "The Differential Spectroscopic Investigation of Partitioning of Reactive Dyes in Micellar Media of Cationic Surfactant, Cetyl Trimethylammonium Bromide (CTAB)." Zeitschrift für Physikalische Chemie 233, no. 2 (2019): 183–99. http://dx.doi.org/10.1515/zpch-2018-1142.

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Abstract This manuscript reports the solubilization of two reactive dyes viz. reactive black-5 (RB-5) and reactive black-8 (RB-8) in the micellar media of cationic surfactant, cetyl trimethylammonium bromide (CTAB) by differential UV/visible spectroscopy. Absorption spectra of said dyes in the presence of CTAB provide strong evidence about dye–surfactant interaction. In premicellar region ion association pair is formed between dye and surfactant while in post micellar region dye molecules get accommodated within the micelles. The values of critical micelle concentration (CMC) of CTAB in the pr
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47

Ismail, Raid A., Hanan A. Rawdhan та Duha S. Ahmed. "High-responsivity hybrid α-Ag2S/Si photodetector prepared by pulsed laser ablation in liquid". Beilstein Journal of Nanotechnology 11 (21 жовтня 2020): 1596–607. http://dx.doi.org/10.3762/bjnano.11.142.

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We report the synthesis of α-Ag2S nanoparticles (NPs) by one-step laser ablation of a silver target in aqueous solution of thiourea (Tu, CH4N2S) mixed with cationic cetyltrimethylammonium bromide (CTAB) as surfactant. The effect of the CTAB surfactant on the structural, morphological, optical, and elemental composition of Ag2S NPs was evaluated using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and UV–vis spectroscopy. The optical absorption decreased and the optical energy gap of α-Ag2S increas
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48

Le Thi, Dung, Loan Nguyen Quynh, Thang Nguyen Duc, Son Le Thanh, and Duc Pham Tien. "Adsorption characteristics of 2,4-dichorophenoxy acetic acid onto surfactant modified titania nanoparticles." Vietnam Journal of Catalysis and Adsorption 10, no. 4 (2021): xx. http://dx.doi.org/10.51316/jca.2021.061.

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The present study investigated adsorption of 2,4-dichorophenoxy acetic acid(2,4-D) on titania (TiO2) nanoparticles with surface modification by cationic surfactant, cetyltrimethylammonium bromide (CTAB). Titania nanoparticles which were successfully synthesized by sol-gel method, were characterized by X-ray diffraction (XRD) and Transmission electron microscopy (TEM). Surface modification of TiO2 with CTAB enhanced the removal of 2,4-D significantly. Some effective conditions affect to the removal of 2,4-D using CTAB modified TiO2 such as pH and adsorbent dosage were systematically studied and
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49

Temerk, Yassien, Hossieny Ibrahim, and Nasser Farhan. "Square wave adsorptive stripping voltammetric determination of anticancer drug nilutamide in biological fluids using cationic surfactant cetyltrimethylammonium bromide." Analytical Methods 7, no. 21 (2015): 9137–44. http://dx.doi.org/10.1039/c5ay01811k.

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A sensitive square wave adsorptive stripping voltammetric method was described for the determination of anticancer drug nilutamide in human biological fluids based on the enhancement effect of the cationic surfactant: cetyltrimethylammonium bromide (CTAB).
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50

Zhu, Jia Ming, Zhong Min Wang, Song Tao, and Ying Peng. "Effect of Surfactants on Morphology and Luminescent Properties of YAG:Ce Phosphors." Materials Science Forum 815 (March 2015): 313–17. http://dx.doi.org/10.4028/www.scientific.net/msf.815.313.

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Using anionic surfactant sodium dodecylsulfate (SDS), cationic surfactant cetyltrimethylammonium bromide (CTAB) and nonionic surfactant polyethylene glycol 20000 (PEG20000) and glyceryl monostearate (monostearin) respectively, Ce-doped Y3Al5O12(YAG:Ce3+(6%)) yellow phosphors were prepared by a combination method of high energy ball milling and solid state reaction. The effects of surfactant type on structure, morphology and luminescence properties were investigated by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and fluorescence spectrometer. The results showed
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