Bimetallic Au/Ag decorated TiO2 nanocomposite membrane for enhanced photocatalytic degradation of tetracycline and bactericidal efficiency

Li, Wanli; Li, Binrong; Meng, Minjia; Cui, Yanhua; Wu, Yilin; Zhang, Yunlei; Dong, Hongjun; Feng, Yonghai

doi:10.1016/j.apsusc.2019.05.162

Cited by 106 publications

(30 citation statements)

References 53 publications

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“…The preparation of the CA membrane was achieved by the phase-inversion method adapted from the previous study with minor modifications [35,36]. The full details of this part of our work are described in the Supplementary Information document, labeled S4.…”

Section: Preparation Of Ca Membranesmentioning

confidence: 99%

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

et al. 2022

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Photocatalytic membranes possessing both photocatalytic and solid-liquid separation capabilities were developed. These materials are based on ternary 1% CuO/TiO2@GCN (1:9) embedded on cellulose acetate (CA) via the phase inversion method. The CA membranes containing 0.1, 0.3 and 0.5 wt% of 1% CuO/TiO2@GCN (1:9) (CTG–100, CTG–300 and CTG–500) were fabricated. The deposition of 1% CuO/TiO2@GCN (1:9) onto the CA membranes and the consequential changes in the materials’ properties were investigated with various characterization techniques. For instance, PXRD, FTIR, and XPS analysis provided evidence that photocatalytic membranes were formed. Electron microscopy and EDX were then used to visualize the photocatalytic membranes and show that the photocatalyst (1% CuO/TiO2@GCN (1:9)) was well dispersed onto the CA membrane. On the other hand, the properties of the photocatalytic membranes were scrutinized, where it was found that the membranes had a sponge-like morphology and that was significantly less hydrophilic compared to neat CA. The removal of KP in water using CTG–500 exhibited over 94% efficiency, while 38% for neat CA was achieved. Water permeability flux improved with increasing 1% CuO/TiO2@GCN (1:9) and hydrophilicity of the membranes. The electrical energy consumption was calculated and determined to be significantly lower than that of the CA membrane. The CTG–500 membrane after every cycle showed self-cleaning ability after operation in drinking and groundwater.

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Section: Preparation Of Ca Membranesmentioning

confidence: 99%

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

et al. 2022

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“…Matsunaga 1 first reported that titania (TiO 2 ) exhibits a bactericidal effect under ultraviolet (UV) radiation in trials focusing on the photocatalytic eradication of Escherichia coli . Photocatalytic sterilization subsequently was employed as an efficient and cost‐effective approach to the elimination of biological contaminants 2‐4 . This technology also was found to be preferable to the use of chemical spraying inactivation because it required less energy and did not introduce harmful byproducts into the environment 5 .…”

Section: Introductionmentioning

confidence: 99%

The facile fabrication and structural control of carbon‐MIL‐125 by coupling pre‐hydrolysate and Ti‐MOF for photocatalytic sterilization under visible light

Sha

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Carbon‐MIL‐125 can be successfully prepared from pre‐hydrolysate and metal oxide TiO2 (Ti‐MOF) by coupling hydrothermal and carbonization processes. The use of this pre‐hydrolysate to prepare carbon (C)‐based materials could provide a value‐added product and allow the more complete use of bioresources. Combining the photocatalytic bactericidal properties of Ti‐MOF and adsorption capacity of biomass‐based C materials could further improve the antibacterial efficiency of the materials, and C could expand the response range of TiO2 to light and reduce the reorganization rate of photogenerated electrons and holes. This strategy could potentially increase the rate and efficiency of catalytic reactions. RESULTS The morphologies and structures of samples were controlled via one‐ and two‐step routes. The obtained samples exhibited 1‐2 μm size and different morphologies. C1‐MIL‐125 showed a spherical morophology via ont‐step, C2‐MIL‐125 displayed a new type of rough tablet structure via two‐step. Meanwhile, Ti exists in the form of the mixture of TiO2 in the anatase and rutile phases. The catalytic activity of mixed TiO2 forms is higher than pure anatase or rutile, removal of Escherichia coli could reach 99.00% and 98.67% under a xenon lamp via one‐ and two‐step processes, respectively. CONCLUSION This work could realize high value‐added utilization of biomass and is expected to provide new prospects for the design of superior photocatalysts for water disinfection. © 2021 Society of Chemical Industry

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“…In other studies, bimetallic-supported semiconductor catalysts (Pt/Au/TiO 2 [283] , [284] , Au/Ag/TiO 2 [285] , Pd-Cu/TiO 2 [286] and Ag-Cu/TiO 2 [287] ) exhibited super activity and high selectivity, which cannot be found in single metals owing to the synergistic effect of bimetals. For example, Xue et al [86] prepared plasmonic Au/Pt/g-C 3 N 4 via a simple calcination-photo-deposition process.…”

Section: Strategies For Photocatalytic Activity Improvementmentioning

confidence: 91%

Recent advances in photodegradation of antibiotic residues in water

Yang

Chen

Zhao

et al. 2021

Chemical Engineering Journal

297

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Bimetallic Au/Ag decorated TiO2 nanocomposite membrane for enhanced photocatalytic degradation of tetracycline and bactericidal efficiency

Cited by 106 publications

References 53 publications

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

Energy-Efficient CuO/TiO2@GCN Cellulose Acetate-Based Membrane for Concurrent Filtration and Photodegradation of Ketoprofen in Drinking and Groundwater

The facile fabrication and structural control of carbon‐MIL‐125 by coupling pre‐hydrolysate and Ti‐MOF for photocatalytic sterilization under visible light

Recent advances in photodegradation of antibiotic residues in water

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