Issue 15, 2024

A comprehensive review of oxygen vacancy modified photocatalysts: synthesis, characterization, and applications

Abstract

Photocatalytic technology is a novel approach that harnesses solar energy for efficient energy conversion and effective pollution abatement, representing a rapidly advancing field in recent years. The development and synthesis of high-performance semiconductor photocatalysts constitute the pivotal focal point. Oxygen vacancies, being intrinsic defects commonly found in metal oxides, are extensively present within the lattice of semiconductor photocatalytic materials exhibiting non-stoichiometric ratios. Consequently, they have garnered significant attention in the field of photocatalysis as an exceptionally effective means for modulating the performance of photocatalysts. This paper provides a comprehensive review on the concept, preparation, and characterization methods of oxygen vacancies, along with their diverse applications in nitrogen fixation, solar water splitting, CO2 photoreduction, pollutant degradation, and biomedicine. Currently, remarkable progress has been made in the synthesis of high-performance oxygen vacancy photocatalysts and the regulation of their catalytic performance. In the future, it will be imperative to develop more advanced in situ characterization techniques, conduct further investigations into the regulation and stabilization of oxygen vacancies in photocatalysts, and comprehensively comprehend the mechanism underlying the influence of oxygen vacancies on photocatalysis. The engineering of oxygen vacancies will assume a pivotal role in the realm of semiconductor photocatalysis.

Graphical abstract: A comprehensive review of oxygen vacancy modified photocatalysts: synthesis, characterization, and applications

Article information

Article type
Tutorial Review
Submitted
18 dec 2023
Accepted
19 mar 2024
First published
19 mar 2024

Phys. Chem. Chem. Phys., 2024,26, 11182-11207

A comprehensive review of oxygen vacancy modified photocatalysts: synthesis, characterization, and applications

F. Zhan, G. Wen, R. Li, C. Feng, Y. Liu, Y. Liu, M. Zhu, Y. Zheng, Y. Zhao and P. La, Phys. Chem. Chem. Phys., 2024, 26, 11182 DOI: 10.1039/D3CP06126D

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