论文标题
通过严重塑性变形（SPD）进行二氧化碳转化的活性光催化剂
Active photocatalysts for CO2 conversion by severe plastic deformation (SPD)
论文作者
论文摘要
化石燃料使用的过量二氧化碳发射导致全球变暖和环境危机。为了解决这个问题，二氧化碳向CO或有用组件的光催化转化是一种新的策略，它引起了极大的关注。在这方面，主要的挑战是探索具有高效率的CO2光量化的光催化剂。近年来，通过高压扭转（HPT）工艺通过高压扭转（HPT）过程进行了严重的塑性变形（SPD）。这些活性光催化剂已经基于四种主要策略进行了设计：（i）氧气空位和应变工程，（ii）高压阶段的稳定，（iii）有缺陷的高渗透氧化物的合成，以及（iv）低伴随的高型物高晶型高素质氧化物的综合。与传统和基准的光催化剂相比，这些策略可以通过改善CO2吸附，增加光吸光度，使频带结构对齐，缩小带隙，加速电荷载体迁移，抑制电子和孔的重组率，并为活动现场抑制活跃的现场反应，从而提高光催化效率。本文回顾了SPD在开发光催化二氧化碳转换的功能陶瓷应用方面的最新进展。
Excessive CO2 emission from fossil fuel usage has resulted in global warming and environmental crises. To solve this problem, the photocatalytic conversion of CO2 to CO or useful components is a new strategy that has received significant attention. The main challenge in this regard is exploring photocatalysts with high efficiency for CO2 photoreduction. Severe plastic deformation (SPD) through the high-pressure torsion (HPT) process has been effectively used in recent years to develop novel active catalysts for CO2 conversion. These active photocatalysts have been designed based on four main strategies: (i) oxygen vacancy and strain engineering, (ii) stabilization of high-pressure phases, (iii) synthesis of defective high-entropy oxides, and (iv) synthesis of low-bandgap high-entropy oxynitrides. These strategies can enhance the photocatalytic efficiency compared with conventional and benchmark photocatalysts by improving CO2 adsorption, increasing light absorbance, aligning the band structure, narrowing the bandgap, accelerating the charge carrier migration, suppressing the recombination rate of electrons and holes, and providing active sites for photocatalytic reactions. This article reviews recent progress in the application of SPD to develop functional ceramics for photocatalytic CO2 conversion.
