1
|
Xu L, Yu JC, Wang Y. Recent advances on bismuth oxyhalides for photocatalytic CO 2 reduction. J Environ Sci (China) 2024; 140:183-203. [PMID: 38331499 DOI: 10.1016/j.jes.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/24/2023] [Accepted: 07/01/2023] [Indexed: 02/10/2024]
Abstract
Photocatalytic conversion of CO2 into fuels such as CO, CH4, and CH3OH, is a promising approach for achieving carbon neutrality. Bismuth oxyhalides (BiOX, where X = Cl, Br, and I) are appropriate photocatalysts for this purpose due to the merits of visible-light-active, efficient charge separation, and easy-to-modify crystal structure and surface properties. For practical applications, multiple strategies have been proposed to develop high-efficiency BiOX-based photocatalysts. This review summarizes the development of different approaches to prepare BiOX-based photocatalysts for efficient CO2 reduction. In the review, the fundamentals of photocatalytic CO2 reduction are introduced. Then, several widely used modification methods for BiOX photocatalysts are systematacially discussed, including heterojunction construction, introducing oxygen vacancies (OVs), Bi-enrichment, heteroatom-doping, and morphology design. Finally, the challenges and prospects in the design of future BiOX-based photocatalysis for efficient CO2 reduction are examined.
Collapse
Affiliation(s)
- Liangpang Xu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China
| | - Jimmy C Yu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China.
| | - Ying Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China.
| |
Collapse
|
2
|
Que M, Shi R, Sun X, Xu J, Ma P, Bai X, Chen J. Preferential growth and electron trap synergistically promoting photoreduction CO 2 of Tm ion doping bismuth titanate nanosheets. J Colloid Interface Sci 2024; 661:493-500. [PMID: 38308889 DOI: 10.1016/j.jcis.2024.01.166] [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: 12/03/2023] [Revised: 01/21/2024] [Accepted: 01/24/2024] [Indexed: 02/05/2024]
Abstract
In this study, we prepared two-dimensional Bi4Ti3O12 nanosheets doped with rare earth ions. The experimental results show that Bi4-xTmxTi3O12 exhibits the highest reduction performance among various rare earth doped Bi4Ti3O12 materials, with a CO yield of 7.25 μmol g-1h-1. Furthermore, a delayed reaction in Bi3.97Tm0.03Ti3O12 is observed upon a cessation of light irradiation. Theoretical calculations reveal that the introduction of Tm ion not only reduces the surface energy of (001) plane and make it preferential growth in Bi4Ti3O12, but also brings the intervening energy level of Tm ion (4f and 4d mixed orbital), which is closer to the conduction band of Bi4Ti3O12 and facilitates charge carrier accumulation in trap states. The electrons retained in the shallow traps promote the hysteresis reaction following a cessation of illumination. This work provides further insights into elucidating precise reduction reaction mechanisms underlying rare earth dopant on photocatalysts. This research provides enhanced insights into unraveling the precise reduction reaction mechanisms influenced by rare earth dopants in photocatalysts.
Collapse
Affiliation(s)
- Meidan Que
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China.
| | - Ruochen Shi
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Xun Sun
- Institute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, PR China
| | - Jun Xu
- Institute of Guizhou Aerospace Measuring and Testing Technology, Guiyang 550009, PR China
| | - Peihong Ma
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Xiangwei Bai
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| | - Jin Chen
- College of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, PR China
| |
Collapse
|
3
|
Li C, Wang X, Wu J, Gao J, Zhao R, Xia S, Yang H, Chen Z, Li L, Wang W. Harnessing ultrasound in photocatalysis: Synthesis and piezo-enhanced effect: A review. ULTRASONICS SONOCHEMISTRY 2023; 99:106584. [PMID: 37678068 PMCID: PMC10495625 DOI: 10.1016/j.ultsonch.2023.106584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/09/2023]
Abstract
The photocatalytic technique has drawn far-ranging interests in addressing the current issues; however, its property suffers from the limited visible light response and rapid recombination of carriers. To address these issues, two specific approaches have been proposed to enhance the photocatalytic activity: (1) ultrasound-assisted synthesis has been utilized to prepare photocatalysts, resulting in refined grain size, increased specific surface area, and reduced photogenerated carrier recombination; (2) sonophotocatalysis and piezoelectric enhanced photocatalysis have been developed to accelerate the reaction, which utilizes the synergism between ultrasound and light. On one side, sonophotocatalysis generates cavitation bubbles which induce more reactive radicals for redox reactions. On the other side, ultrasound induces deformation of the piezoelectric material structure, which changes the internal piezoelectric potential and improves the photocatalytic performance. Currently, intensive efforts have been devoted to related research and great progress has been reached with applications in pollutant degradation, new energy production, and other fields. This work starts by elucidating the fundamental concept of ultrasound-assisted photocatalyst synthesis and photocatalysis. Then, the synergistic behavior between ultrasonic and light in ultrasonic-assisted photocatalysis has been thoroughly discussed, including pollutant degradation, water splitting, and bacterial sterilization. Finally, the challenge and outlook are investigated and proposed.
Collapse
Affiliation(s)
- Chunyan Li
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China
| | - Xiaozhuo Wang
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China
| | - Jianhao Wu
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China
| | - Jingyang Gao
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China
| | - Rixu Zhao
- China Construction Ready Mixed Concrete Co., Ltd., Wuhan 430070, China
| | - Sasa Xia
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China
| | - Hua Yang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, MOA Laboratory of Quality & Safety Risk Assessment for Agro-products (Hangzhou), Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zhi Chen
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China.
| | - Lan Li
- College of Materials and Chemistry, China Jiliang University, 258 Xueyuan Street, Xiasha Higher Education Zone, Hangzhou 310018, China.
| | - Wen Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, MOA Laboratory of Quality & Safety Risk Assessment for Agro-products (Hangzhou), Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| |
Collapse
|