钙钛矿型光催化剂的制备及脱除典型气态污染物的研究进展

doi:10.16085/j.issn.1000-6613.2021-0711

摘要/Abstract

摘要：

近年来，开发宽光谱响应、高吸附性能和强催化活性的钙钛矿型催化剂用于气态污染物的光催化脱除受到广泛关注。本文全面梳理了钙钛矿型光催化剂的制备和改性方法，并对其光催化脱除典型气态污染物的反应机理、研究现状及未来研究方向进行了系统归纳和评述。文中指出：柠檬酸络合法制备所得钙钛矿型光催化剂具有粒径小和光催化活性高的特点，经离子掺杂或复合改性后可进一步提升其可见光响应能力。该类催化剂在光催化脱除烟气中的NO、Hg⁰和挥发性有机化合物（VOCs）方面表现出较高的催化反应性，其协同催化氧化Hg⁰和NO的可行性也得以初步的理论论证。此外，含钛高炉渣衍生的钙钛矿型光催化剂在气态污染物净化方面表现出良好的应用前景。然而，钙钛矿型光催化剂用于气态多污染物协同脱除及含钛高炉渣中钙钛矿型组分的富集等方面的研究有待进一步深化。本文以期为钙钛矿型光催化剂的优化制备及气态污染物光催化脱除效率的提升提供参考。

关键词: 催化剂, 制备, 烟道气, 光催化, 改性, 自由基

Abstract:

In recent years, developing and utilizing catalysts with wide spectral response, high adsorption capacity and strong catalytic activity for photocatalytic removal of gaseous pollutants was widely concerned. In this work, the preparation and modification of perovskite-type photocatalysts were elaborated in detail, and then the research status, reaction mechanism and future research directions of perovskite-type photocatalysts for removing typical atmospheric emissions were summarized and reviewed systematically. The perovskite-type photocatalyst prepared by citric acid complexation method has the characteristics of small particle size and high photocatalytic activity, hereafter its visible light response ability can be further improved by ion doping or composite modification. The catalysts show high photocatalytic activity in the removal of NO, Hg⁰ and VOCs from flue gas, and the feasibility of synergistic catalytic oxidation of Hg⁰ and NO has been theoretically demonstrated. Furthermore, the perovskite-type photocatalyst derived from titanium-bearing blast furnace slag has a good application prospect in the purification of gaseous pollutants. However, the application of perovskite-type photocatalyst in simultaneous removal of multiple gaseous pollutants and the enrichment of perovskite-type components from titanium-bearing blast furnace slag need to be further studied, so as to provide a reference for the optimal preparation of perovskite-type photocatalyst and the improvement of its photocatalytic removal efficiency of gaseous pollutants.

Key words: catalyst, preparation, flue gas, photocatalysis, modification, radicals

中图分类号:

X511

马颢菲, 苑鹏, 沈伯雄. 钙钛矿型光催化剂的制备及脱除典型气态污染物的研究进展[J]. 化工进展, 2022, 41(2): 721-729.

MA Haofei, YUAN Peng, SHEN Boxiong. Research progress of preparation and utilization of perovskite-type photocatalyst in romoval of typical gaseous pollutants[J]. Chemical Industry and Engineering Progress, 2022, 41(2): 721-729.

图/表 1

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