Issue 25, 2024

A critical mini-review on doping and heterojunction formation in ZnO-based catalysts

Abstract

This mini-review on doping and heterojunctions for catalysis applications provides a comprehensive overview of key aspects. Doping, when carried out adequately with a uniform distribution, creates a new energy level that significantly enhances charge transfer and light absorption. This new level alters the material's morphology and enhances intrinsic defects. For instance, ZnO, despite its exceptional band edge concerning oxygen reduction and water oxidation redox potentials, faces the issue of electron–hole recombination. However, forming a heterojunction can effectively aid charge transfer and prolong electron–hole relaxation without recombination. This is where the role of doping and heterojunctions becomes crucial. Additionally, incorporating noble metals with S- and Z-scheme heterojunctions offers a promising mechanism for charge transfer and visible light harvesting, further amplifying the catalytic properties.

Graphical abstract: A critical mini-review on doping and heterojunction formation in ZnO-based catalysts

Article information

Article type
Review Article
Submitted
05 Apr 2024
Accepted
23 May 2024
First published
29 May 2024
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2024,14, 17338-17349

A critical mini-review on doping and heterojunction formation in ZnO-based catalysts

B. Abebe, N. K. Gupta and D. Tsegaye, RSC Adv., 2024, 14, 17338 DOI: 10.1039/D4RA02568G

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