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Journal articles on the topic 'Photocatalytic concretes'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Le Pivert, Marie, and Yamin Leprince-Wang. "Photocatalytic Concrete Developed by Short Seedless Hydrothermal Method for Water Purification." Catalysts 12, no. 12 (2022): 1620. http://dx.doi.org/10.3390/catal12121620.

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Stormwater runoff management and treatment are significant topics for designing a sustainable city. Therefore, photocatalytic, permeable, and removable concrete is a promising solution to reduce pollution through leaching with permeable and scalable road. The objective of this work was to develop cost-effective and greener photocatalytic concretes that can be easily scaled-up, and to demonstrate their photocatalytic activities. To achieve this, seedless hydrothermal ZnO nanostructures (NSs) in 2 h were employed to functionalize a concrete surface by a soft functionalization process, avoiding o

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2

Macphee, D. E., and A. Folli. "Photocatalytic concretes — The interface between photocatalysis and cement chemistry." Cement and Concrete Research 85 (July 2016): 48–54. http://dx.doi.org/10.1016/j.cemconres.2016.03.007.

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3

Tyukavkina, Vera V., and Anna V. Tsyryatyeva. "FINE-GRAINED PHOTOCATALYTIC CONCRETES BASED ON TITANOSILICATE WASTE." Transactions of the Kоla Science Centre of RAS. Series: Engineering Sciences 14, no. 4/2023 (2023): 207–12. http://dx.doi.org/10.37614/2949-1215.2023.14.4.035.

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The results of a study on obtaining fine-grained concretes with improved technical and operational properties and a self-cleaning surface are presented. As a modifying additive in concrete, nanodispersed titanosilicate powders, which are a waste product of the production of titanosilicate sorbent, were considered. It has been determined that the use of a titanosilicate additive contributes to an increase in strength and frost resistance, a decrease in water absorption and abrasion of fine-grained concrete and gives its surface the ability to self-clean in both the ultraviolet and visible regio

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4

Shestakov, N., D. Alekseeva, and D. Polosina. "THE USE OF PHOTOCATALYTIC CONCRETES IN ROAD CONSTRUCTION." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 12 (2021): 16–26. http://dx.doi.org/10.34031/2071-7318-2021-6-12-16-26.

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The article discusses the possibility of reducing the atmospheric environmental load of highways by applying compositions with photocatalytic properties to acoustic screens. It is found that the amount of nitrogen oxides on the territory of the city of Moscow exceeds the MPC norms. Therefore, a potential way to reduce the level of the average daily and maximum one-time MPC of nitrogen oxides is proposed, when using coatings of traditional acoustic screens with photocatalytic compositions. Titanium dioxide in anatase form is considered as a photocatalytic agent. To reduce the density and increa

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Ünal, Serdal, and Mehmet Canbaz. "Photocatalytic activation of fibrous lightweight polymer concrete surfaces under artificial light source." Challenge Journal of Concrete Research Letters 16, no. 1 (2025): 15. https://doi.org/10.20528/cjcrl.2025.01.002.

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In general, surface contamination of building materials is caused by pollution, which can be divided into human-made and natural sources. Building materials whose surfaces are exposed to pollutants from these sources for a long time show chemical and physical degradation and lose their function over time and their service life is shortened. Due to photocatalytic feature provided to the material surfaces, organic pollutants on the surface are degraded as a result of oxidation and reduction reactions under the influence of light. In this study, the self-cleaning performance was measured on the s

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Kuźmiński, Kamil, Antoni W. Morawski, and Magdalena Janus. "Application of modified concrete to remove surfactants from water." E3S Web of Conferences 59 (2018): 00016. http://dx.doi.org/10.1051/e3sconf/20185900016.

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In these studies two types of modified concretes in photocatalytic mineralization of anionic surfactant sodium dodecylbenzenesulfonate (NaDBS) were used. Commercial TiO2-P25 and nitrogen modified TiO2-N as photocatalysts for concrete modification were employed. The studies were conducted in the special designed reactor which was a simple model of the secondary settler used at the sewage treatment plant. The mineralization of anionic surfactant NaDBS after 18 h of UV light irradiation amounted to 48% for concrete modified by TiO2-P25 and 37% for concrete modified by TiO2-N.

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Strokova, Valeria, Yulia Ogurtsova, Ekaterina Gubareva, Sofya Nerovnaya, and Marina Antonenko. "Multifunctional Anatase–Silica Photocatalytic Material for Cements and Concretes." Journal of Composites Science 8, no. 6 (2024): 207. http://dx.doi.org/10.3390/jcs8060207.

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The purpose of this research was to study the influence of multifunctional anatase–silica photocatalytic materials (ASPMs) with various photocatalytic and pozzolanic activities on the properties of white portland cement and fine-grained concrete. ASPMs were synthesized by a sol–gel method, during which the levels of photocatalytic and pozzolanic activity were regulated by a certain amount of solvent. ASPMb, obtained with the use of a smaller amount of solvent, was characterized by increased pozzolanic activity due to the lower degree of coating of the surface of diatomite particles with titani

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Samchenko, Svetlana V., Irina V. Kozlova, Andrey V. Korshunov, Olga V. Zemskova, and Marina O. Dudareva. "Synthesis and Evaluation of Properties of an Additive Based on Bismuth Titanates for Cement Systems." Materials 16, no. 18 (2023): 6262. http://dx.doi.org/10.3390/ma16186262.

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The development of modern building materials science involves the process of designing innovative materials that exhibit unique characteristics, such as energy efficiency, environmental friendliness, self-healing ability, and photocatalytic properties. This can be achieved by modifying cement with nano- and fine-dispersed additives that can give the material new properties. Such additives include a number of compounds based on the TiO2-Bi2O3 system. These compounds have photocatalytic activity in the near-UV and visible range of the spectrum, which can serve to create photocatalytic concretes.

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He, Rui, Xin Huang, Jiansong Zhang, Yao Geng, and Haidong Guo. "Preparation and Evaluation of Exhaust-Purifying Cement Concrete Employing Titanium Dioxide." Materials 12, no. 13 (2019): 2182. http://dx.doi.org/10.3390/ma12132182.

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To address the increasing air pollution caused by vehicle exhaust, environment-friendly pavement materials that possesses exhaust-purifying properties were prepared using common cement concrete and porous cement concrete as the base of photocatalyst nano-titanium dioxide (TiO2), respectively. Firstly, Fe3+-doped TiO2 powder was prepared by applying planetary high-energy ball milling in order to improve the efficiency of the semiconductor photocatalyst for degrading vehicle exhausts. Two nano-TiO2, namely the original and modified nanomaterials, were adopted to produce the photocatalytic cement

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10

Gopalan, Anantha-Iyengar, Jun-Cheol Lee, Gopalan Saianand, et al. "Recent Progress in the Abatement of Hazardous Pollutants Using Photocatalytic TiO2-Based Building Materials." Nanomaterials 10, no. 9 (2020): 1854. http://dx.doi.org/10.3390/nano10091854.

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Titanium dioxide (TiO2) has been extensively investigated in interdisciplinary research (such as catalysis, energy, environment, health, etc.) owing to its attractive physico-chemical properties, abundant nature, chemical/environmental stability, low-cost manufacturing, low toxicity, etc. Over time, TiO2-incorporated building/construction materials have been utilized for mitigating potential problems related to the environment and human health issues. However, there are challenges with regards to photocatalytic efficiency improvements, lab to industrial scaling up, and commercial product produ

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Minella, Marco, and Claudio Minero. "Quantification of the Photocatalytic Self-Cleaning Ability of Non-Transparent Materials." Materials 12, no. 3 (2019): 508. http://dx.doi.org/10.3390/ma12030508.

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The photo-induced reactivity of compounds at the surface of photocatalytic materials is used to maintain the cleanliness of the surface of glass, concretes and paints. A standard method to quantify the photocatalytic self-cleaning (SC) properties of non-transparent materials was recently published. It is based on the covering of the sample surface with a defined amount of dye and on the evaluation of the reflectance spectra of the coloured surface under irradiation. The calibration of the spectral changes allowed the quantification of the surface residual dye and the evaluation of the self-cle

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Balykov, Artemy, Denis Chugunov, and Natalia Davydova. "Chemical activity score of siliceous rocks in development of self-cleaning cement material." E3S Web of Conferences 515 (2024): 02011. http://dx.doi.org/10.1051/e3sconf/202451502011.

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The development of photocatalytically active cement materials characterized by a complex of positive properties, such as self-cleaning ability, decompose atmospheric air pollutants, eliminate unwanted odors, etc., is actual scientific direction in the field of building materials science. It is known that ‘core-shell’ compositions obtained by precipitation of photocatalyst particles on dispersed carriers (substrates) are one of the effective types of photocatalytic additives for cement systems. It should be noted that mineral raw materials of various genesis can act as a substrate. Foreign and

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Balykov, A. S., T. A. Nizina, D. B. Chugunov, N. S. Davydova, and V. M. Kyashkin. "Photocatalysts based on Zn-Ti layered double hydroxide and its calcination products for self-cleaning concretes: Structure formation and photocatalytic activity." Construction materials and products 8, no. 1 (2025): 2. https://doi.org/10.58224/2618-7183-2025-8-1-2.

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Currently, the development of highly active photocatalytic additives for self-cleaning cement materials is a topical direction of building materials science. Mixed transition metal oxides are one of the effective types of photocatalysts, because they have improved functional characteristics compared to monometallic compounds. The purpose of this study was to establish the effects of synthesis conditions on the structure parameters and photocatalytic activity of zinc-titanium layered double hydroxide (Zn-Ti LDH) with Zn2+/Ti4+ molar ratio of 2/1, as well as its calcination products in the form

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14

García Calvo, J. L., P. Carballosa, A. Castillo, D. Revuelta, J. P. Gutiérrez, and M. Castellote. "Expansive concretes with photocatalytic activity for pavements: Enhanced performance and modifications of the expansive hydrates composition." Construction and Building Materials 218 (September 2019): 394–403. http://dx.doi.org/10.1016/j.conbuildmat.2019.05.135.

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15

Ghilan, Dheya, and Egemen Teomete. "Photocatalytic gypsum plasters – studies of air cleaning properties and selected technical parameters." Cement Wapno Beton 24, no. 1 (2019): 21–32. http://dx.doi.org/10.32047/cwb.2019.24.1.3.

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This study aims to investigate the feasibility of using industrial waste plastics, polypropylene (PP), polyethylene (PE) and polyamide (PA), obtained from recycling factory, as reinforcement for mortar. As one of the main problems of using waste plastics in cementitious composites is the hydrophobic properties of the sur- face of the plastics, because it prevents the formation of adequate interfacial adhesion with cement paste. Surface treatment of waste plastics was applied using diluted solution of isopropanol. Three parameters were considered when designing the mortar mixtures; type of wast

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16

Singla, Neeru, Sandeep Singla, Parteek Singh Thind, et al. "Assessing the Applicability of Photocatalytic-Concrete Blocks in Reducing the Concentration of Ambient NO2 of Chandigarh, India, Using Box–Behnken Response Surface Design Technique: A Holistic Sustainable Development Approach." Journal of Chemistry 2021 (July 15, 2021): 1–12. http://dx.doi.org/10.1155/2021/6468749.

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Anthropogenic emissions, such as industrial, vehicular, biomass burning, and coal combustion, play a significant role in degrading the atmospheric conditions of India. Therefore, in the present study, applicability of the photocatalytic-concrete blocks was estimated in improving the ambient environment of Chandigarh, India. The photocatalytic-concrete blocks were prepared by mixing the TiO2 particles with cement. All the experiments, designed in accordance with the Box–Behnken approach, in combination with response surface methodology, were performed in a batch reactor. Further, the process pa

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17

Greco, Enrico, Alessia De Spirt, Alessandro Miani, et al. "Nanomaterials in Photocatalysis: An In-Depth Analysis of Their Role in Enhancing Indoor Air Quality." Applied Sciences 15, no. 3 (2025): 1629. https://doi.org/10.3390/app15031629.

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Since people spend most of their time in indoor environments, they are continuously exposed to various contaminants that threaten human health. The air quality in these settings is therefore a crucial factor in maintaining health safety. In order to reduce the concentration of indoor air pollutants and improve air quality, photocatalytic oxidation has drawn the attention of researchers. This study aims to provide a comprehensive view of the nanomaterials used in the photocatalytic oxidation of the most common pollutants in indoor environments. The effects of various parameters like humidity, a

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18

Maury-Ramírez, Aníbal, Mario Rinke, and Johan Blom. "Low-Carbon Embodied, Self-Cleaning, and Air-Purifying Building Envelope Components Using TiO2 Photocatalysis, 3D Printing, and Recycling." Coatings 14, no. 9 (2024): 1228. http://dx.doi.org/10.3390/coatings14091228.

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This perspective article describes the past, present, and future directions on TiO2 photocatalysis, 3D concrete printing, and recycling for developing innovative building envelope components from façade skins. Using a methodology consisting of three phases, first the historical evolution of TiO2 photocatalysis, 3D concrete printing, and recycling policies was investigated. Second, the rationale and positioning with regard to the state of the art were developed. Third, the cementitious mix design assessment for 3D printing of the building envelope components, evaluation of the photocatalytic ac

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Singh, Vishvendra Pratap, Rahul Vaish, and El Sayed Yousef. "A Review on Cement-Based Composites for Removal of Organic/Heavy Metal Contaminants from Water." Catalysts 12, no. 11 (2022): 1398. http://dx.doi.org/10.3390/catal12111398.

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Building materials are traditionally known for their mechanical and structural properties. As environmental pollution has risen as a huge global issue, functional building materials with environmental remediation capabilities are the demand for the present time. In this context, cement and concrete with photocatalytic and adsorbent additives were explored for air and water remediation. The usage of functional building materials for self-cleaning and air cleaning is well documented and reviewed in earlier reports. This article gives an overview of the functional building material composites use

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Guo, Zhan, Chenxiang Huang, and Yu Chen. "Experimental study on photocatalytic degradation efficiency of mixed crystal nano-TiO2 concrete." Nanotechnology Reviews 9, no. 1 (2020): 219–29. http://dx.doi.org/10.1515/ntrev-2020-0019.

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AbstractThe photocatalytic mixed crystal nano-TiO2 particles were incorporated with concrete by means of the internal doping method (IDM) and spraying method (SPM) in this paper. To evaluate the photocatalytic degradation efficiency of mixed crystal nano-TiO2 concrete, the methyl orange (MO) was chosen to simulate pollutants. The physicochemical characteristics and photocatalytic performance of mixed crystal nano-TiO2 concrete prepared by above two different methods were experimentally investigated under UV irradiation and solar irradiation. Furthermore, the effects of two key influential fact

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21

Kujawa, Weronika, Agnieszka Didyk-Mucha, Ewa Olewnik-Kruszkowska, Magdalena Gierszewska, and Anna Rudawska. "Synergistic Effect of Combined Polymorphs Anatase-Rutile Nano-Modified Lightweight Concrete on Photocatalytic Reduction of NOx, Self-Cleaning Performance, and Antimicrobial Properties." Buildings 13, no. 7 (2023): 1736. http://dx.doi.org/10.3390/buildings13071736.

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Anatase, one of the polymorphs of titanium dioxide (TiO2), has become the most widely used semiconductor for photocatalytic materials due to its chemical and physical properties. However, researchers have been studying the use of alternative materials (e.g., ZnO, N-doped, and C-doped TiO2) to improve the photocatalytic activity of cementitious materials. In this paper, we propose a modification of lightweight concrete by introducing mixed phases of titanium dioxide—anatase and rutile—to enhance its photocatalytic performance. The efficiency of NOx degradation of nano TiO2-modified concrete, it

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Freitas, Lucas Ferreira, and Douglas Santos Monteiro. "Enhancing Concrete Performance with Tio₂ Nanoparticles: A Systematic Review." Revista de Gestão Social e Ambiental 19, no. 5 (2025): e012233. https://doi.org/10.24857/rgsa.v19n5-055.

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Objective: The aim of this study is to review the application of titanium dioxide (TiO₂) nanoparticles in concrete, highlighting their potential to enhance mechanical properties, durability, and sustainability, while reducing the environmental impact of concrete production. Theoretical Framework: This section presents the key concepts and theories underpinning the research, emphasizing the photocatalytic properties and microstructural reinforcement provided by TiO₂. These properties impart self-cleaning characteristics, increased strength, and durability to concrete, offering a solid foundatio

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Alcantara, Rosmery Aylin Tineo, Carlos Javier Canchuricra Blanca, Kebin Luis Díaz Rivera, and Eduardo Manuel Yarango Serrano. "Review of sustainable concrete based on photocatalytic to reduce the environmental impact in large works in Peru." Journal of Project Management 8, no. 2 (2023): 91–98. http://dx.doi.org/10.5267/j.jpm.2022.12.002.

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This bibliographical review allows us to know clearly and concisely the use and effectiveness of photocatalytic concrete applied to tracks or roads, and in buildings. This study analyzes sustainable concrete based on photocatalytic to reduce the environmental impact in large-scale works through the application for the collection and review of articles published in the scientific base of Scopus using the VOSviewer software tool that analyzes a large amount of data from a group of investigations, this research is carried out from the publications of the year 2000 to the year 2022. Graphs were ob

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Bartos, Peter J. M. "Editorial: Photocatalytic concrete." Magazine of Concrete Research 66, no. 5 (2014): 217–18. http://dx.doi.org/10.1680/macr.13.00298.

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Liu, Ruiping, Jia Mao, and Xiangyu Li. "Preparation of Photocatalytic Decorative Concrete Based on Nano-Titanium Dioxide Adsorbed by Clay Brick from Building Waste and Its Application in Pavement Structure of Railway Freight Yard." Journal of Nanoelectronics and Optoelectronics 15, no. 2 (2020): 250–56. http://dx.doi.org/10.1166/jno.2020.2697.

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In this paper, based on the clay brick of building waste, nano-titanium dioxide photocatalytic decorative concrete was prepared, and its application in the pavement structure of a railway freight yard was studied. The results show that the loading capacity of nano-titanium dioxide on clay sand carrier is better than that on zeolite sand. With the increase of powder content, the photocatalytic efficiency of decorative concrete surface decreases, but the degree of reduction is small. Compared with laboratory conditions, the reduction rate of NOX in surface layer of decorative concrete under natu

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Ogurtsova, Yulia, Marina Antonenko, Ekaterina Gubareva, Sofya Nerovnaya, and Valeria Strokova. "Composition and Properties of Fine-grained Concrete for Self-cleaning Coatings." E3S Web of Conferences 410 (2023): 01011. http://dx.doi.org/10.1051/e3sconf/202341001011.

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The paper considers the dependences of the properties of self-cleaning fine-grained concrete on the composition of the concrete mixture: the ratio of sand to white Portland cement, the content of plasticizer, the content of photocatalytic composite material. The photocatalytic composite material (PCM) is a diatomite-based anatase-silica material obtained by sol-gel deposition of nanoscale TiO2 of anatase modification on a silica carrier. The investigated properties of fine-grained concrete were: average density, compressive strength and self-cleaning ability, which was determined by evaluating

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Krushel'nickaya, E. "Evaluation of the photocatalytic activity of concrete." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 4 (2021): 13–20. http://dx.doi.org/10.34031/2071-7318-2021-6-4-13-20.

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Based on the change in the color of an organic dye – rhodamine B, on the surface of concrete under the action of ultraviolet radiation, a theoretical and experimental assessment of the photocatalytic activity of concrete was carried out. Photocatalytic activity was calculated using the obtained coordinates of colorimetry L * a * b *. To assess the performance of the photocatalyst over time, a test was carried out with concrete samples at the age of 7 and 28 days. Titanium dioxide of three types of anatase modification of a foreign manufacturer was used as a photocatalyst in the study. It is sh

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Nath, Ranjit K., M. F. M. Zain, Abdul Amir Hassan Kadhum, and Rabiul Alam. "Mixed Photocatalyst for Sustainable Concrete Construction." Advanced Materials Research 626 (December 2012): 39–43. http://dx.doi.org/10.4028/www.scientific.net/amr.626.39.

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An innovative approach to the material science has demonstrated that photocatalytic activity may be conferred to cement-based construction materials, such as concrete, mortars, paints, etc. Photocatalyst is needed for a cleaner environment and a better quality of life that leads to thoughts of a more eco-compatable use of light. Addition of photocatalytic materials to the RC structure during its construction phase could reduce the corrosion problem of RC materials. This material hinders calcium oxide to form acidic compound. In this study, cement-based mixed photocatalytic material has been pr

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Ji, Zibo, Peijiang Cong, Jie Zhang, Guiyu Peng, Gaowei Liu, and Jinsheng Bai. "Experimental study on the effect of porosity on the mechanical properties of photocatalytic porous concrete." ce/papers 8, no. 2 (2025): 82–91. https://doi.org/10.1002/cepa.3103.

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AbstractIn this study, porous concrete was prepared with different target porosities (6%, 8%, 10%) and sprayed with different amounts of nano‐TiO2 (200g/m2, 300g/m2, 500g/m2) to prepare photocatalytic porous concrete, and in‐depth research was carried out to investigate the effect of the porosity of the photocatalytic porous concrete on its mechanical properties. At the same time, the influence of the optimal target porosity on photocatalytic experiments was explored. and to explore the effect of the nano‐TiO2 loading on the properties of the The effect of nano‐TiO2 loading on its properties w

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Dylla, Heather, Marwa M. Hassan, and David Osborn. "Field Evaluation of Ability of Photocatalytic Concrete Pavements to Remove Nitrogen Oxides." Transportation Research Record: Journal of the Transportation Research Board 2290, no. 1 (2012): 154–60. http://dx.doi.org/10.3141/2290-20.

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Numerous laboratory studies have demonstrated the ability of nano and ultrafine titanium dioxide (TiO2) photocatalytic pavements to trap and degrade nitrogen oxides in the air when irradiated with ultraviolet light. However, to understand better how photocatalytic pavements will perform under real-world conditions, field studies are necessary. Quantification of the reduction of nitrogen oxides (NOx) in field studies is difficult and challenging because of the many environmental and operating variables. The objective of this paper is to identify evidence of photocatalytic NOx reduction and to d

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Kim, Hyeok-jung, and Kinam Hong. "Evaluation of Nitrogen Oxide Reduction Performance in Permeable Concrete Surfaces Treated with a TiO2 Photocatalyst." Materials 16, no. 16 (2023): 5512. http://dx.doi.org/10.3390/ma16165512.

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Fine dust, recently classified as a carcinogen, has raised concerns about the health effects of air pollution. Vehicle emissions, particularly nitrogen oxide (NOx), contribute to ultrafine dust formation as a fine dust precursor. A photocatalyst, such as titanium dioxide (TiO2), is a material that causes a catalytic reaction when exposed to light, has exceptional characteristics such as decomposition of pollutants, and can be used permanently. This study aimed to investigate NOx reduction performance by developing ecofriendly permeable concrete with photocatalytic treatment to reduce fine dust

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Sopov, V. P., N. S. Shyshko, V. I. Kondrashchenko, and Zhang Yihe. "Ecological efficiency photocatalytic concrete." IOP Conference Series: Materials Science and Engineering 907 (August 26, 2020): 012052. http://dx.doi.org/10.1088/1757-899x/907/1/012052.

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Luo, Guobao, Hanbing Liu, Wenjun Li, and Xiang Lyu. "Automobile Exhaust Removal Performance of Pervious Concrete with Nano TiO2 under Photocatalysis." Nanomaterials 10, no. 10 (2020): 2088. http://dx.doi.org/10.3390/nano10102088.

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The urban environment is facing serious problems caused by automobile exhaust pollution, which has led to a great impact on human health and climate, and aroused widespread concern of the government and the public. Nano titanium dioxide (TiO2), as a photocatalyst, can be activated by ultraviolet irradiation and then form a strong REDOX potential on the surface of the nano TiO2 particles. The REDOX potential can degrade the automobile exhaust, such as nitrogen oxides (NOx) and hydrocarbons (HC). In this paper, a photocatalytic environmentally friendly pervious concrete (PEFPC) was manufactured

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Luna, Aguilera Manuel Jesús, Jaén Juan José Delgado, Ismael Romero, et al. "Photocatalytic TiO2 nanosheets-SiO2 coatings on concrete and limestone: An enhancement of de-polluting and self-cleaning properties by nanoparticle design." Construction and Building Materials 338 (July 4, 2022): 127349. https://doi.org/10.1016/j.conbuildmat.2022.127349.

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In this study, we develop TiO<sub>2</sub>-SiO<sub>2</sub> nanocomposites that can be employed as photoactive coatings to create surfaces with antipollution and self-cleaning properties in urban buildings. In particular, anatase titanium dioxide with a high percentage of {0 0 1} facets, commonly called titania nanosheet (TNS), was used as active phase. This approach allows us to improve the antipollution properties of similar sols based on P25. The obtained TNS were intensively characterized by UV–Vis diffuse reflectance absorption, X-Ray diffraction and transmission electron microsc

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Park, Hee-Ju, Sayed Mukit Hossain, Kiin Choi, Ho-Kyong Shon, and Jong-Ho Kim. "A Study on the Evaluation Methods of Nitrogen Oxide Removal Performance of Photocatalytic Concrete for Outdoor Applications." Catalysts 12, no. 8 (2022): 846. http://dx.doi.org/10.3390/catal12080846.

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In Korea, the issue of particulate matter pollution is growing, and many solutions are being developed to deal with it. Photocatalytic technology has been found to be helpful in removing precursors such as nitrogen oxides that cause particulate matter. In a microcosm setup, ISO 22197-1 has been successfully used to quantify the removal of nitrogen oxides from the specimen to which the photocatalyst is applied. However, owing to a lack of suitable tools, on-site measurement of real-scale efficacy is difficult. Depending on the substrate and surrounding circumstances at the application location,

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Pozhivina, K. A. "New photocatalytic nano additives based on titanium dioxide and silica for self-cleaning concrete." Transaction Kola Science Centre 11, no. 3-2020 (2020): 145–51. http://dx.doi.org/10.37614/2307-5252.2020.3.4.032.

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In this article powdered composites of titanium dioxide and silica with high-developed surface(183–534 m2 / g), synthesized from industrial wastes, are considered as photocatalytic concrete additives. Their composition was studied, and the photocatalytic performance was evaluated by decomposition of the dye “Methylene blue” under UV-irradiation. The surfactant’s concentration at which the photocatalytic activity reaches its highest values was determined.

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Nagao, Masahiro, Kazuyo Kobayashi, Yongcheng Jin, Ippei Maruyama, and Takashi Hibino. "Ionic conductive and photocatalytic properties of cementitious materials: calcium silicate hydrate and calcium aluminoferrite." Journal of Materials Chemistry A 8, no. 30 (2020): 15157–66. http://dx.doi.org/10.1039/d0ta04866f.

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Gao, Chunhua, Yifei Sima, Cong Xiang, and Zerun Lv. "Preparation and Application of Highly Efficient Self-Cleaning Coating g-C3N4/MoS2@PDMS." Catalysts 15, no. 1 (2024): 10. https://doi.org/10.3390/catal15010010.

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Photocatalytic coatings are capable of achieving pollution-free degradation of organic pollutants on the surface of buildings. The preparation of photocatalytic coatings with high degradation efficiency, stability and durability constitutes a significant challenge in current widespread applications. This study prepared g-C3N4/MoS2 photocatalytic materials through a simple hydrothermal combined low-temperature calcination process, and selected the materials through characterization and photocatalytic degradation of organic wastewater experiments. Finally, poly(dimethylsiloxane) (PDMS) was added

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Jia, Zongming, Yanru Zhao, and Hengmao Niu. "Damage Evolution and NOx Photocatalytic Degradation Performance of Nano-TiO2 Concrete Under Freeze–Thaw Cycles." Buildings 14, no. 12 (2024): 3763. http://dx.doi.org/10.3390/buildings14123763.

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The internal pore structure of nano-TiO2 concrete deteriorates gradually during freeze–thaw (F–T) cycles. The deterioration process can reveal the F–T damage mechanism and the deterioration law of photocatalytic performance. The evolution law of the pore structure of nano-TiO2 concrete during F–T damage was investigated. Moreover, this paper defined the microscopic F–T damage factor based on porosity and fractal dimension. The results showed that a 2% dosage of nano–TiO2 concrete had better frost resistance and lower porosity in this experiment. Its porosity only increased by 13.3% after 200 F

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Lee, Jong Won, Sang Hyuk Lee, Young Il Jang, and Hee Mun Park. "Evaluation of Reducing NO and SO2 Concentration in Nano SiO2-TiO2 Photocatalytic Concrete Blocks." Materials 14, no. 23 (2021): 7182. http://dx.doi.org/10.3390/ma14237182.

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The use of titanium dioxide in concrete block pavements is a promising approach to reduce air pollution in the roadside. When TiO2 is used as an additive of cement concrete or mortar, it is not dispersed uniformly due to agglomeration between particles causing the degradation of photocatalytic reaction. To improve the photocatalytic performance of TiO2, the Nano SiO2-TiO2 (NST) has been developed by coating TiO2 with SiO2 as a support using the sol-gel method. The environmental performance of concrete blocks incorporating NST as an additive was evaluated using both laboratory and full-scale ch

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Facin, Fernanda, João Victor Staub de Melo, Rodrigo Costa Puerari, and William Gerson Matias. "Toxicological Effects of Leachates Extracted from Photocatalytic Concrete Blocks with Nano-TiO2 on Daphnia magna." Nanomaterials 14, no. 17 (2024): 1447. http://dx.doi.org/10.3390/nano14171447.

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The incorporation of titanium dioxide nanoparticles into concrete blocks for paving adds photocatalytic functionality to the cementitious matrix, providing self-cleaning and pollutant-degrading properties. However, wear and leaching from these pavements can release potentially toxic compounds into water bodies, affecting aquatic organisms. In this context, this study evaluated the toxicological effects of leachates from photocatalytic concrete containing nano-TiO2 with an average size of 10 nm and anatase crystallinity on Daphnia magna. Acute and chronic toxicity tests on neonates were conduct

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He, Kang, Yu Chen, and Mengjun Mei. "Study on influencing factors of photocatalytic performance of CdS/TiO2 nanocomposite concrete." Nanotechnology Reviews 9, no. 1 (2020): 1160–69. http://dx.doi.org/10.1515/ntrev-2020-0074.

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AbstractIn this study, a high-energy ball mill was used to composite nano-TiO2 and CdS, and three kinds of nanocomposite photocatalysts TiO2, CdS/TiO2-R400, and CdS/TiO2-R600 were prepared, which can respond to visible light. The photocatalytic concrete test block was prepared by mixing the nanocomposite photocatalyst and other masses with cement by incorporation method. To study the effect of the photocatalyst content on the photocatalytic performance of nanoconcrete, a total of four catalyst contents (0, 2%, 5%, and 8%) were set. The effects of high-temperature treatment (400°C) and differen

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Osborn, David, Marwa M. Hassan, and Heather Dylla. "Quantification of Reduction of Nitrogen Oxides by Nitrate Accumulation on Titanium Dioxide Photocatalytic Concrete Pavement." Transportation Research Record: Journal of the Transportation Research Board 2290, no. 1 (2012): 147–53. http://dx.doi.org/10.3141/2290-19.

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Field trials of photocatalytic pavements were recently initiated and are being considered by many states (e.g., Virginia, Texas, New York, and Missouri). Results from this study are from the country's first air-purifying asphalt and concrete photocatalytic pavements on December 20, 2010. The test area was a pavement site located on the Louisiana State University campus in Baton Rouge. The objective of this study was validation of photocatalytic degradation of nitrogen oxides (NOx) at the test site by measuring nitrate salts (NO3) deposited on the pavement surface. With quantification of the ni

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Zhan, Yu Hao, and Xiao Hua Yu. "Recent Development of Nano Titanium Dioxide to Be Used in the Field of Building Materials." Advanced Materials Research 1065-1069 (December 2014): 1926–29. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1926.

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In recent years, the photocatalytic properties of nano TiO2(nanotitanium dioxide) is one of today’s hottest issues of environmentally friendly materials, medical materials and building materials fields. In this paper, we present the latest research on nanotitanium dioxide to be used in the field of building materials. Based on the history of the photocatalytic properties of nanotitanium dioxide, the application of nanotitanium dioxide in photocatalytic concrete, photocatalytic ceramics, functional coatings and materials in the field of self-cleaning glass has been analyzed. Finally, further re

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Witkowski, Hubert, Janusz Jarosławski, and Anna Tryfon-Bojarska. "Application of Photocatalytic Concrete Paving Blocks in Poland—Verification of Effectiveness of Nitric Oxides Reduction and Novel Test Method." Materials 13, no. 22 (2020): 5183. http://dx.doi.org/10.3390/ma13225183.

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Photocatalytic concrete is one of the most promising concrete technologies of the past decades. Application of nanometric TiO2 to cement matrices enables the reduction of harmful airborne pollutants. Although a number of implementations of this technology are described in this paper, problems related to test conditions are also reported. One major issue is the sufficient light irradiation that for higher latitudes can be significantly reduced. In this paper, a field campaign on the implementation of photocatalytic concrete pavement in Warsaw (52.23° N) is briefly described. Based on experience

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Jegatheeswaran Dhanapal, Sridevi Saravanan, Sridhar Jayaprakash, et al. "Eco-Friendly Concrete Solutions: The Role of Titanium Dioxide Nanoparticles in Enhancing Durability and Reducing Environmental Pollutants - A Review." Journal of Environmental Nanotechnology 13, no. 3 (2024): 332–44. http://dx.doi.org/10.13074/jent.2024.09.243894.

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Concrete is one of the key components of construction, which ensures durability and aesthetics of the building. In recent days, nanoparticles are playing an essential role in civil engineering research. The binding of nanoparticles into concrete significantly improves the mechanical and durable properties due to the nanostructure of the cementitious materials. This review paper represents the existing research data on titanium dioxide nanoparticles, when applied in the different types of concrete. The data influenced by the different research papers are presented in terms of strength and durab

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Zhang, Xiucheng, Weizhi Chen, Wencong Lin, Jiansheng Zheng, Guohui Yan, and Xuefei Chen. "Enhanced Photocatalytic Activity in Photocatalytic Concrete: Synthesis, Characterization, and Comprehensive Performance Assessment of Nano-TiO2-Modified Recycled Aggregates." Catalysts 14, no. 10 (2024): 711. http://dx.doi.org/10.3390/catal14100711.

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This study presents an exhaustive exploration into the development and rigorous evaluation of nano-TiO2-modified recycled aggregates (NT@RAs) as an environmentally sustainable substitute for natural aggregates in concrete applications. A methodical framework was devised for the synthesis and thorough characterization of NT@RAs, emphasizing the optimization of nano-TiO2 loading onto the RA surface and within its intricate porous structure. The investigation encompassed three distinct types of recycled aggregates: recycled glass sands (RGSs), recycled clay brick sands (RCBSs), and recycled concr

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Pietrzak, Alina, Janina Adamus, and Bogdan Langier. "Application of Titanium Dioxide in Cement and Concrete Technology." Key Engineering Materials 687 (April 2016): 243–49. http://dx.doi.org/10.4028/www.scientific.net/kem.687.243.

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Public awareness of the need to protect the environment deepens and expands to new areas of life, including new technologies used in civil engineering. These technologies include, among others, the technology of photocatalytic concrete products, which are capable of purifying air. The use of this type of technology is closely linked with the campaign for Sustainable Development. The article discusses the photocatalytic properties of titanium dioxide and its use in various industries. The test results of TioCem® CEM II/A-S 42.5 cement and Portland CEM I 42.5 cement based on experiments performe

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LUKUTTSOVA, N. P., R. A. EFREMOCHKIN, O. I. BORSUK, and S. N. GOLOVIN. "Photocatalytic Self-Cleaning Fine-Grained Concrete." Stroitel'nye Materialy 778, no. 1-2 (2020): 8–15. http://dx.doi.org/10.31659/0585-430x-2020-778-1-2-8-15.

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Ünal, Serdal, and Mehmet Canbaz. "Effect of industrial wastes on self-cleaning properties of concrete containing anatase-TiO2." Revista de la construcción 21, no. 3 (2022): 493–505. http://dx.doi.org/10.7764/rdlc.21.3.493.

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Concrete decomposing the organic compounds on because of natural or anthropogenic contaminating sources with photocatalysis existing in its structure is called self-cleaning concrete. In this study, the self-cleaning concrete with industrial waste has been searched from the point of mechanical and physical characteristics. Fly ash, blast furnace slag and sepiolite materials has been used as industrial waste in concrete. Titanium dioxide (TiO2) has been used as photocatalysis material. Specimens with the dimensions 15×15×15 cm were produced using 0 %, 10 %, 20 % and 30 % industrial wastes and 0

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