Photocatalytic degradation of organic pollutants using TiO2-based photocatalysts: A review

Chen, Dongjie; Cheng, Yanling; Zhou, Nan; Chen, Paul; Ruan, Roger; Li, Kun; Huo, Shuhao; Cheng, Pengfei; Peng, Peng; Zhang, Renchuang; Wang, Lu; Liu, Hui; Liu, Yuhuan; Ruan, Roger

doi:10.1016/j.jclepro.2020.121725

Cited by 1,089 publications

(388 citation statements)

References 121 publications

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“…Thus, inexpensive, efficient, eco-friendly and cost-effective alternative technologies are desired to minimize the problems of treatment liquid dye wastes [ 4 ]. Recently, photocatalytic degradation has proved to be a promising technique for the removal of organic dye pollutants by optical catalyst owing to its environmental friendliness and the absence of secondary pollutants [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Fouda

Salem

Wassel

et al. 2020

Heliyon

177

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Herein, CuO/ZnO nanocomposites at different ratios were successfully synthesized through a green biosynthesis approach. This was performed by harnessing the fungal-secreted enzymes and proteins during the sol-gel process for nanocomposites seed growth. All fabricated nanoparticles/nanocomposites were characterized using Fourier Transform Infra-Red (FT-IR) Spectroscopy, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM-EDX) and X-ray Photoelectron Spectroscopy ( XPS) analyses. The photocatalytic degradation efficacy of the synthesized nanocomposites was evaluated using a cationic methylene blue (MB) dye as a model of reaction. Results obtained from the FT-IR and EDX analyses revealed that CuO-NPs, ZnO-NPs, CuO/ZnO 50/50 , CuO/ZnO 80/20, and CuO/ZnO 20/80 were successfully prepared by harnessing the biomass filtrate of Penicillium corylophilum As-1. Furthermore, XRD and TEM revealed the variation in the particle size of the nanocomposites (10–55 nm) with the ratio of the nanoparticles. Notably, the size of the nanocomposites was proportionally increased with an increasing ratio of ZnO-NPs. XPS analysis affirmed the presence of both Cu and Zn in the nanocomposites with varying binding energies compared with individual nanoparticles. Furthermore, a high photo-degradation efficacy was achieved by increasing the ratio of ZnO-NPs in the nanocomposite formulation, and 97% of organic MB dye was removed after 85 min of irradiation using the CuO/ZnO 20/80 nanocomposite.

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Section: Introductionmentioning

confidence: 99%

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Fouda

Salem

Wassel

et al. 2020

Heliyon

177

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“…The holes in VB and the electrons in CB can thermodynamically oxidize water molecules and reduce O 2 to produce ROS, respectively. Subsequently, the reactions of harmful microorganisms and environmental pollutants with these radicals result in disinfection and elimination of contaminants found in the environment, respectively [37] , [38] , [39] , [40] .…”

Section: Introductionmentioning

confidence: 99%

Review on heterogeneous photocatalytic disinfection of waterborne, airborne, and foodborne viruses: Can we win against pathogenic viruses?

Habibi‐Yangjeh

Asadzadeh‐Khaneghah

Feizpoor

et al. 2020

Journal of Colloid and Interface Science

443

103

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“…The photocatalysis of titanium dioxide (TiO2) has been extensively studied for its application in environmental remediation [19], which relies on the generation of active oxidants (e.g., OH radicals) to trigger the oxidative degradation of a broad range of organic compounds. Although photocatalytic oxidation has been applied to the degradation of PAHs in soil and water samples [20,21], no previous studies have reported its application for the treatment of PAHs in atmospheric PM2.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Polycyclic Aromatic Hydrocarbons in Fine Particulate Matter (PM2.5) Collected on TiO2-Supporting Quartz Fibre Filters

et al. 2021

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Airborne fine particulate matter (PM2.5) pollution is known to have adverse effects on human health, and owing to their carcinogenic and mutagenic nature, polycyclic aromatic hydrocarbons (PAHs) are of particular concern. This study investigated the effect of ultraviolet (UV)-induced photocatalysis on the degradation of PAHs in PM2.5, employing titanium dioxide (TiO2)-supporting quartz fibre filters. A TiO2 layer was formed on the quartz fibre filters, and airborne PM2.5 was collected using an air sample at a flow rate of 500 L/min for 24 h. The PM2.5 samples were subsequently irradiated with ultraviolet rays at 1.1 mW/cm2. The amounts of nine targeted PAHs (phenanthrene, PHE; anthracene, ANT; pyrene, PYR; benzo[a]anthracene, BaA; chrysene, CHR; benzo[b]fluoranthene, BbF; benzo[k]fluoranthene, BkF; benzo[a]pyrene, BaP; and benzo[g,h,i]perylene, BgP) gradually decreased during the treatment, with half-lives ranging from 18 h (PHE) to 3 h (BaP), and a significantly greater reduction was found in comparison with the PAHs collected in the control (non-TiO2 coated) quartz fibre filters. However, the degradation rates were much faster when the PAHs were in direct contact with the TiO2 layer. As PM2.5 is a mixture of various kinds of solids, co-existing components can be a rate-determining factor in the UV-induced degradation of PAHs. This was demonstrated by a remarkable increase in degradation rates following the removal of co-existing salts from the PM2.5 using water treatment.

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Photocatalytic degradation of organic pollutants using TiO2-based photocatalysts: A review

Cited by 1,089 publications

References 121 publications

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Review on heterogeneous photocatalytic disinfection of waterborne, airborne, and foodborne viruses: Can we win against pathogenic viruses?

Photocatalytic Degradation of Polycyclic Aromatic Hydrocarbons in Fine Particulate Matter (PM2.5) Collected on TiO2-Supporting Quartz Fibre Filters

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