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Sharma M, Sajwan D, Gouda A, Sharma A, Krishnan V. Recent progress in defect-engineered metal oxides for photocatalytic environmental remediation. Photochem Photobiol 2024. [PMID: 38757336 DOI: 10.1111/php.13959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 05/18/2024]
Abstract
Rapid industrial advancement over the last few decades has led to an alarming increase in pollution levels in the ecosystem. Among the primary pollutants, harmful organic dyes and pharmaceutical drugs are directly released by industries into the water bodies which serves as a major cause of environmental deterioration. This warns of a severe need to find some sustainable strategies to overcome these increasing levels of water pollution and eliminate the pollutants before being exposed to the environment. Photocatalysis is a well-established strategy in the field of pollutant degradation and various metal oxides have been proven to exhibit excellent physicochemical properties which makes them a potential candidate for environmental remediation. Further, with the aim of rapid industrialization of photocatalytic pollutant degradation technology, constant efforts have been made to increase the photocatalytic activity of various metal oxides. One such strategy is the introduction of defects into the lattice of the parent catalyst through doping or vacancy which plays a major role in enhancing the catalytic activity and achieving excellent degradation rates. This review provides a comprehensive analysis of defects and their role in altering the photocatalytic activity of the material. Various defect-rich metal oxides like binary oxides, perovskite oxides, and spinel oxides have been summarized for their application in pollutant degradation. Finally, a summary of existing research, followed by the existing challenges along with the potential countermeasures has been provided to pave a path for the future studies and industrialization of this promising field.
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Affiliation(s)
- Manisha Sharma
- School of Chemical Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, India
| | - Devanshu Sajwan
- School of Chemical Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, India
| | - Ashrumochan Gouda
- School of Chemical Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, India
| | - Anitya Sharma
- School of Chemical Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, India
| | - Venkata Krishnan
- School of Chemical Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh, India
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2
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Xu J, Zhang J, Tao F, Liang P, Zhang P. Kilogram-scale fabrication of TiO 2 nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity. NANOSCALE ADVANCES 2023; 5:2226-2237. [PMID: 37056612 PMCID: PMC10089113 DOI: 10.1039/d2na00886f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Incorrect discharge of dye wastewater will cause environment pollution and be very harmful to human health. Visible-light photocatalysis over large-scale synthesized semiconductor materials can become one of the feasible solutions for the practical application of purifying dye wastewater. As a new candidate, carbon dots (CDs) with unique fluorescence were fabricated on a tens of grams scale and then further applied to the kilogram-scale synthesis of a CDs/TiO2 composite by one-step heat treatment. Compared with single TiO2 nanoparticles (NPs), the CDs/TiO2 composite with a large specific surface area exhibits enhanced photo-degradation performance for methyl orange (MO). This phenomenon can be attributed to the loading of CDs in the TiO2 NPs, which is conducive to broadening the light absorption spectrum and improving absorption intensity, narrowing the band gap, charge carrier trapping, up-converting properties, and charge separation. The kilogram-scale synthesis of the CDs/TiO2 photocatalyst does not affect the morphology, structure, optical properties and photocatalytic performance of the composite, which opens up a new avenue to construct elaborate heterostructures for enhanced photocatalytic performance using visible light as the light source.
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Affiliation(s)
- Jingjing Xu
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Jiayan Zhang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Feifei Tao
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences Shanghai 201210 P. R. China
| | - Pengfei Liang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Pingan Zhang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
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3
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Fu R, Song H, Liu X, Zhang Y, Xiao G, Zou B, Waterhouse GIN, Lu S. Disulfide
Crosslinking‐Induced
Aggregation: Towards
Solid‐State
Fluorescent Carbon Dots with Vastly Different Emission Colors
†. CHINESE J CHEM 2023. [DOI: 10.1002/cjoc.202200736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Affiliation(s)
- Rui Fu
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou Henan 450000 China
| | - Haoqiang Song
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou Henan 450000 China
| | - Xingjiang Liu
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou Henan 450000 China
| | - Yongqiang Zhang
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou Henan 450000 China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Physics Jilin University Changchun Jilin 130012 China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics Jilin University Changchun Jilin 130012 China
| | | | - Siyu Lu
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou Henan 450000 China
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4
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Wang J, Guo RT, Bi ZX, Chen X, Hu X, Pan WG. A review on TiO 2-x-based materials for photocatalytic CO 2 reduction. NANOSCALE 2022; 14:11512-11528. [PMID: 35917276 DOI: 10.1039/d2nr02527b] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photocatalytic CO2 reduction technology has a broad potential for dealing with the issues of energy shortage and global warming. As a widely studied material used in the photocatalytic process, titanium dioxide (TiO2) has been continuously modified and tailored for more desirable application. Recently, the defective/reduced titanium dioxide (TiO2-x) catalyst has attracted broad attention due to its excellent photocatalytic performance for CO2 reduction. In this perspective review, we comprehensively present the recent progress in TiO2-x-based materials for photocatalytic CO2 reduction. In detail, the review starts with the fundamentals of CO2 photocatalytic reduction. Then, the synthesis of a defective TiO2 structure is introduced for the regulation of its photocatalytic performance, especially its optical properties and dissociative adsorption properties. In addition, the current application of TiO2-x-based photocatalysts for CO2 reduction is also highlighted, such as metal-TiO2-x, oxide-TiO2-x and TiO2-x-carbon-based photocatalysts. Finally, the existing challenges and possible scope of photocatalytic CO2 reduction over TiO2-x-based materials are discussed. We hope that this review can provide an effective reference for the development of more efficient and reasonable photocatalysts based on TiO2-x.
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Affiliation(s)
- Juan Wang
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Rui-Tang Guo
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
- Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, China
| | - Zhe-Xu Bi
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Xin Chen
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Xing Hu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
| | - Wei-Guo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai, China.
- Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai, China
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5
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Meng S, Li L, Xi H, Yang J, Xiao T, Zuo R, Xu X, Lei Z, Yang Z, Xue Q. Visible‐light Photocatalytic and Photo‐bactericidal Activity of
Ni‐CuWO
4
/
OTiO
2
Composite. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuangyan Meng
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Li Li
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Hui Xi
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Jing Yang
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Ting Xiao
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Rui Zuo
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Xueqing Xu
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Ziqiang Lei
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Zhiwang Yang
- Key Laboratory of Eco‐functional Polymer Materials, Ministry of Education, Key Laboratory of Eco‐Environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070
| | - Qunji Xue
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China
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6
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Zhou J, Wei D, Zhang Y, Zhang H, Li J. Plasmonic
Core‐Shell
Nanostructures Enhanced Spectroscopies. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jun Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Materials, College of Energy, Fujian Key Laboratory of Advanced Materials Xiamen University Xiamen Fujian 361005 China
| | - Di‐Ye Wei
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Materials, College of Energy, Fujian Key Laboratory of Advanced Materials Xiamen University Xiamen Fujian 361005 China
| | - Yu‐Jin Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Materials, College of Energy, Fujian Key Laboratory of Advanced Materials Xiamen University Xiamen Fujian 361005 China
| | - Hua Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Materials, College of Energy, Fujian Key Laboratory of Advanced Materials Xiamen University Xiamen Fujian 361005 China
| | - Jian‐Feng Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, College of Materials, College of Energy, Fujian Key Laboratory of Advanced Materials Xiamen University Xiamen Fujian 361005 China
- College of Optical and Electronic Technology China Jiliang University Hangzhou Zhejiang 310018 China
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