光催化脱硝材料及其结构改性研究进展

Research progress in photocatalytic denitrification materials and their structural modifications

在传统脱硝技术的基础上,以钛基催化剂、锌基催化剂、铁基催化剂、碳基催化剂和铋基催化剂为对象,介绍了近些年光催化氧化脱硝材料的研究进展,对各类光催化氧化脱硝催化剂材料的带隙结构、脱硝机理和转化效率进行了分析和比较。探讨了构建异质结、离子掺杂、表面改性和形貌调控等改性方法对各类光催化材料催化活性的影响,结果表明,通过调节催化剂的电子结构和构建异质结构,提升对可见光的吸收范围,提高抗水和抗硫性将会成为该领域的发展方向和研究重点。

Significant progress has been made in the research of photocatalytic oxidation denitrification materials,building upon traditional denitrification technologies.This paper provides an overview of this progress,with a specific focus on various categories of catalysts,including titanium-based,zinc-based,iron-based,carbon-based,and bismuth-based catalysts.The analysis primarily delves into the band gap structure,denitrification mechanisms,and conversion efficiency of these photocatalytic oxidation denitrification materials,offering a comprehensive comparison.Additionally,the study explores the impact of various modification techniques,such as constructing heterojunctions,ion doping,surface modifications,and morphology regulation,on the catalytic activity of these photocatalytic materials.The findings indicate that key areas of future development and research in this field include adjusting the electronic structure of catalysts,creating heterostructures,expanding the absorption range to encompass visible light,and enhancing the catalysts'resistance to water and sulfur.These aspects are expected to be pivotal directions for advancement and in-depth investigation.