Defect engineering in photocatalysis: formation, chemistry, optoelectronics, and interface studies,Journal of Materials Chemistry A

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Defect engineering in photocatalysis: formation, chemistry, optoelectronics, and interface studies
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-09-01 , DOI: 10.1039/d0ta04297h
Dileep Maarisetty _{1,

2,

3} , Saroj Sundar Baral _{1,

2,

3}

Affiliation

Defect engineering in photocatalytic materials has recently attracted substantial attention owing to the profound influence of defects on light absorption, charge separation, and interfacial reactions. However, the ambiguity regarding the role of defects in modifying the photocatalytic properties remains a long-standing problem. In this review, defect engineering in photocatalytic materials is comprehensively discussed with a focus on the classification, formation, and characterization of defects and their roles in photocatalytic systems. A systematic study of charge density, rate of charge recombination, and dissociative adsorption in defect-rich photocatalysts is also presented. Defects have the ability to alter the mechanisms of photocatalytic reactions, although the triggering of undesired thermodynamically favored back reactions by excess defects can lead to diminished photocatalytic activity. Furthermore, the critical roles of defects in photocatalytic degradation, H₂ production, and bifunctional systems are reviewed. Finally, the challenges and future potential of defect engineering are considered.

中文翻译：

光催化中的缺陷工程：形成，化学，光电和界面研究

由于缺陷对光吸收，电荷分离和界面反应的深远影响，光催化材料中的缺陷工程最近引起了广泛的关注。然而，关于缺陷在改变光催化性能中的作用的模棱两可仍然是一个长期存在的问题。在这篇综述中，对光催化材料中的缺陷工程进行了全面的讨论，重点是缺陷的分类，形成和表征及其在光催化系统中的作用。还提出了对缺陷丰富的光催化剂中电荷密度，电荷复合速率和解离吸附的系统研究。缺陷具有改变光催化反应机理的能力，尽管由于过量的缺陷引发不希望的热力学上有利的后反应会导致光催化活性降低。此外，缺陷在光催化降解中的关键作用H₂生产，并审查了双功能系统。最后，考虑了缺陷工程的挑战和未来的潜力。

更新日期：2020-09-22

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