Development of photocatalytic paint based on TiO2 and photopolymer resin for the degradation of organic pollutants in water

Islam, Md. Tariqul; Dominguez, Arieana; Turley, R. Steven; Kim, Hoejin; Sultana, Kazi Afroza; Shuvo, Mai; Alvarado-Tenorio, Bonifacio; Montes, Milka O.; Lin, Yirong; Gardea‐Torresdey, Jorge L.

doi:10.1016/j.scitotenv.2019.135406

Cited by 87 publications

(38 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Engineered TiO 2 nanoparticles (NPs) are successfully used in many industrial sectors, rather than bulk material [1,2]. They are present in daily-use products from food industry and pharmaceuticals [3,4], beauty and personal care products [5], in paints [6], fertilizers [7], plant protection products [8], food packaging [9], etc. At the end of products' lifecycle, TiO 2 NPs may accumulate in biosolid (Bs) and sewage sludge from municipal wastewater treatment plants (WWTPs), which are largely introduced in agricultural soils and receiving water bodies [10,11].…”

Section: Introductionmentioning

confidence: 99%

Synchrotron Radiation Spectroscopy and Transmission Electron Microscopy Techniques to Evaluate TiO2 NPs Incorporation, Speciation, and Impact on Root Cells Ultrastructure of Pisum sativum L. Plants

et al. 2021

View full text Add to dashboard Cite

Biosolids (Bs) for use in agriculture are an important way for introducing and transferring TiO2 nanoparticles (NPs) to plants and food chain. Roots of Pisum sativum L. plants grown in Bs-amended soils spiked with TiO2 800 mg/kg as rutile NPs, anatase NPs, mixture of both NPs and submicron particles (SMPs) were investigated by Transmission Electron Microscopy (TEM), synchrotron radiation based micro X-ray Fluorescence and micro X-ray Absorption Near-Edge Structure (µXRF/µXANES) and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES). TEM analysis showed damages in cells ultrastructure of all treated samples, although a more evident effect was observed with single anatase or rutile NPs treatments. Micro-XRF and TEM evidenced the presence of nano and SMPs mainly in the cortex cells near the rhizodermis. Micro-XRF/micro-XANES analysis revealed anatase, rutile, and ilmenite as the main TiO2 polymorphs in the original soil and Bs, and the preferential anatase uptake by the roots. For all treatments Ti concentration in the roots increased by 38–56%, however plants translocation factor (TF) increased mostly with NPs treatment (261–315%) and less with SMPs (about 85%), with respect to control. In addition, all samples showed a limited transfer of TiO2 to the shoots (very low TF value). These findings evidenced a potential toxicity of TiO2 NPs present in Bs and accumulating in soil, suggesting the necessity of appropriate regulations for the occurrence of NPs in Bs used in agriculture.

show abstract

Section: Introductionmentioning

confidence: 99%

Synchrotron Radiation Spectroscopy and Transmission Electron Microscopy Techniques to Evaluate TiO2 NPs Incorporation, Speciation, and Impact on Root Cells Ultrastructure of Pisum sativum L. Plants

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In particular, Ti-based materials have been extensively studied due to their high photocatalytic activity and stability. 116,[128][129][130][131][132] Titanium alkoxides prepared by the high-temperature hydrolysis method have shown high denitrification activity, with a high absorption rate of 98% for NO photocatalytic oxidation. 133 In 2008, TiO 2 nanoparticles coating on woven glass fabric was used as a photocatalyst, which showed a good effect for removing nitrogen oxides and an efficiency of 63.9% upon the steady-state.…”

Section: Denitrification Of Gaseous Nitrogen Oxidesmentioning

confidence: 99%

“…Photocatalytic denitrification treatment shows great potential in the reduction of nitrogen oxides in the exhaust gas. In particular, Ti‐based materials have been extensively studied due to their high photocatalytic activity and stability 116,128‐132 . Titanium alkoxides prepared by the high‐temperature hydrolysis method have shown high denitrification activity, with a high absorption rate of 98% for NO photocatalytic oxidation 133 .…”

Section: Conversion Between Nitrogen and Nitrogen Oxidesmentioning

confidence: 99%

Rational design on photo(electro)catalysts for artificial nitrogen looping

Liu

Wang

et al. 2021

EcoMat

View full text Add to dashboard Cite

Nitrogen, one of most important elements on the Earth, plays an essential role in shaping the modern society. The natural nitrogen looping, however, is insufficient to satisfy the high demand of the large-scale human activities. To achieve a more sustainable and efficient utilization of nitrogen, artificial nitrogen looping by photo(electro)catalytic processes has been considered as a feasible strategy. In this context, the rational design on the high-performance catalysts for nitrogen looping becomes increasingly important and urgent. On this basis, herein, we provide a timely review on the recent progress, achievements, and essential challenges for the artificial nitrogen looping process, mainly including photo(electro)catalytic transformations among dinitrogen, ammonia, gaseous nitrogen oxides, nitrate, and so on. Especially, the photo(electro)catalysts used in various reactions involved in nitrogen looping, including nitrogen reduction reaction, nitrogen oxidation reaction, ammonia oxidation reaction, ammonia decomposition reaction, etc., are systematically introduced. Finally, we hope that this review will help us deepen the understanding of nitrogen looping-related photo(electro)catalysts, and further pave a way toward the sustainable development on energy and environment. K E Y W O R D Senvironmental protection, nitrogen looping, photo(electro)catalysis, sustainable energy Mengying Li and Xiaoqing Liu contributed equally to this study.

show abstract

“…Additionally, this O ÀÁ 2 species can react with hydrogenations ( H þ ) to generate hydrogen peroxide ðH 2 O 2 Þ, which is excited by electrons and transformed into Á OH. According to equation (11), the holes may attack the dye molecules generating by-products, and equation (12) corresponds to a widespread reaction of the byproducts and the mineralization. According to recent research developed by Nguyen et al, 79,89 the intermediates generated by photocatalytic degradation of MB are azure B, azure A, azure C, leuco MB sulfoxide, diphenyl sulfoxide, benzenesulfoxide acid, and dimethyl-p-phenylenediamine, as can be evidenced in Figure 14(a) to (g), respectively.…”

Section: Characterizationmentioning

confidence: 99%

“…[7][8][9][10][11] The incorporation of nanomaterials in these products such as resins, aerosols, and paints may contribute to the reduction of additives highly toxic which are considered as health hazard. [12][13][14] Anticorrosive properties are important for the fabrication of paints, in which the aim is to protect those structures exposed to chemical or electrochemical corrosion due to the pollution and marine atmosphere in large populated and coastal areas. 15,16 Through the photocatalytic activity of nanomaterials as additives, high hydrophobicity and self-cleaning ability may reduce surface contamination by degrading pollutants, in order to improve the quality and appearance of the structural surface.…”

Section: Introductionmentioning

confidence: 99%

Preparation of modified paints with nano-structured additives and its potential applications

Solano

Patiño-Ruiz

Herrera

2020

Nanomaterials and Nanotechnology

View full text Add to dashboard Cite

Recently, an increase in the production of intelligent nanomaterials has been reported for the application of solid surface coating. These nanomaterials provide a wide number of functionalities such as anticorrosive, antibacterial, and self-cleaning properties. Hence, titanium dioxide (TiO2) and zinc oxide (ZnO) nanoparticles were synthesized using a green chemistry approach. These nanoparticles were fully characterized by scanning electron microscopy, energy-dispersive X-ray, high-resolution transmission electron microscopy, X-ray diffraction, ultraviolet (UV)–visible spectroscopy, Brunauer–Emmett–Teller test, and nitrogen adsorption–desorption isotherm. Then, a commercial enamel-type paint was modified by using different concentrations (2, 3.5, and 5 w/v%) of nanoparticles. These nanofilled paints were then brushed onto the surface of different types of materials such as carbon steel sheets, wood sheets, and aluminum disks. Anticorrosive, self-cleaning, and antibacterial properties of the nanofilled paints were evaluated, with the aim to determine the capability for this application. According to the characterization results, TiO2 and ZnO nanoparticles exhibited similar physicochemical properties compared to those synthesized using traditional methods. The anticorrosion results revealed that nanofilled paints provide a barrier using low concentrations of nanoparticles, due to the decrease of agglomerates on the surface avoiding the presence of high porosity. In the case of self-cleaning, a proposed mechanism of degradation demonstrated that the presence of both nanoparticles in the paint provided high degradation of methylene blue due to the high surface area offered by the nanoparticles. On the other hand, antibacterial activity under UV light was observed only for ZnO nanoparticles, which may be related to the diffusion of nanoparticles into the cell membrane of the bacteria, affecting the normal function. These results showed to be promising for the modification of paints with TiO2 and ZnO nanoparticles, and the application on solid surfaces for the construction, and even in textile fields.

show abstract

Development of photocatalytic paint based on TiO2 and photopolymer resin for the degradation of organic pollutants in water

Cited by 87 publications

References 45 publications

Synchrotron Radiation Spectroscopy and Transmission Electron Microscopy Techniques to Evaluate TiO2 NPs Incorporation, Speciation, and Impact on Root Cells Ultrastructure of Pisum sativum L. Plants

Synchrotron Radiation Spectroscopy and Transmission Electron Microscopy Techniques to Evaluate TiO2 NPs Incorporation, Speciation, and Impact on Root Cells Ultrastructure of Pisum sativum L. Plants

Rational design on photo(electro)catalysts for artificial nitrogen looping

Preparation of modified paints with nano-structured additives and its potential applications

Contact Info

Product

Resources

About