Department of Environmental Engineering, JSS Science and Technology University, Mysuru , 570006, India.
Department of Chemistry, JSS Science and Technology University, Mysuru, 570006, India.
Environ Sci Pollut Res Int. 2022 Jan;29(4):4930-4957. doi: 10.1007/s11356-021-17361-1. Epub 2021 Nov 19.
Many untreated and partly treated wastewater from the home and commercial resources is being discharged into the aquatic environment these days, which contains numerous unknown and complex natural and inorganic compounds. These compounds tend to persist, initiating severe environmental problems, which affect human health. Conventionally, physicochemical treatment methods were adopted to remove such complex organic chemicals, but they suffer from critical limitations. Over time, photocatalysis, an advanced oxidation process, has gained its position for its efficient and fair performance against emerging organic pollutant decontamination. Typically, photocatalysis is a green technology to decompose organics under UV/visible light at ambient conditions. Semiconducting nanometal oxides have emerged as pioneering photocatalysts because of large active surface sites, flexible oxidation states, various morphologies, and easy preparation. The current review presents an overview of emerging organic pollutants and their effects, advanced oxidation processes, photocatalytic mechanism, types of photocatalysts, photocatalyst support materials, and methods for improving photodegradation efficiency on the degradation of complex emerging organic pollutants. In addition, the recent reports of metal-oxide-driven photocatalytic remediation of emerging organic pollutants are presented in brief. This review is anticipated to reach a broader scientific community to understand the first principles of photocatalysis and review the recent advancements in this field.
目前，大量未经处理和部分处理的家庭和商业废水被排放到水生环境中，其中含有许多未知和复杂的天然和无机化合物。这些化合物往往会持续存在，引发严重的环境问题，影响人类健康。传统上，采用物理化学处理方法来去除这些复杂的有机化学品，但它们存在严重的局限性。随着时间的推移，光催化作为一种高级氧化工艺，因其对新兴有机污染物净化的高效和公平性能而获得了一席之地。通常，光催化是一种在环境条件下利用紫外线/可见光分解有机物的绿色技术。由于具有大的活性表面位、灵活的氧化态、多种形态和易于制备，半导体纳米金属氧化物已成为先驱性的光催化剂。本综述概述了新兴有机污染物及其影响、高级氧化工艺、光催化机理、光催化剂类型、光催化剂载体材料以及提高复杂新兴有机污染物光降解效率的方法。此外，还简要介绍了近年来金属氧化物驱动的新兴有机污染物光催化修复的报道。预计这篇综述将引起更广泛的科学界的关注，以了解光催化的基本原理，并回顾该领域的最新进展。
