Heterogeneous photocatalysis
Heterogeneous photocatalysis
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DOI：
10.1201/9781420015751.ch12
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Srabanti Ghosh;Marta E. G. Mosquera;V. Peña
中科院分区：
文献类型：
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作者：
Srabanti Ghosh;Marta E. G. Mosquera;V. Peña
太阳能-光催化作为一种清洁的可再生能源，用于二氧化碳光还原和污染物消除，已被广泛接受为一种绿色和有潜力的H2生成方法。半导体光催化剂的一个关键限制因素是快速载流子复合，导致催化效率低。在这种情况下，已经开发了多种策略来提高光催化剂的光转换效率，但结合两个半导体形成异质结光催化剂被认为是提高光催化性能的最有效方法，因为通过两个半导体之间的带排列容易分离电荷。在这些异质结中，类似于ii型异质结光催化剂的z型光催化剂是提高光催化性能和太阳能转化的合理策略。它们对空间分离的光生电子空穴对和优化还原和氧化能力的有效性使它们成为非常有效的光催化系统。本章包括对z型异质结构的合成及其在光催化领域（如水裂解、有机污染物去除和二氧化碳还原）的潜在应用的广泛概述。
Abstract Solar-light driven photocatalysis has been widely accepted as a green and potential method for the generation of H2 as a clean, renewable energy source for CO2 photoreduction, and for pollutant elimination. One of the key limiting factors of semiconductor photocatalysts is the fast charge carrier recombination, which leads to low catalytic efficiency. In this context, diverse strategies have been developed to enhance the photoconversion efficiency of photocatalysts, but the combination of two semiconductors to form a heterojunction photocatalyst is considered a most efficient way for enhancing the photocatalytic performance, due to the facile charge separation through the band alignment between the two semiconductors. Among these heterojunctions, Z-scheme photocatalysts, similar to that of a type-II heterojunction photocatalyst represents a rational strategy for enhancing the photocatalytic performance and solar-energy conversion. Their effectiveness for spatially separate photogenerated electron–hole pairs and for optimizing the reduction and oxidation ability makes them very efficient photocatalytic systems. The present chapter includes a broad overview of the synthesis and the potential applications of Z-scheme heterostructures in photocatalysis domains such as water splitting, organic pollutant removal, and CO2 reduction.