Wakjira Tadesse Lemma, Gemta Abebe Belay, Kassahun Gashaw Beyene, Andoshe Dinsefa Mensur, Tadele Kumneger
Department of Applied Physics, Adama Science and Technology University, Adama 1888, Ethiopia.
Department of Material Engineering, Adama Science and Technology University, Adama 1888, Ethiopia.
ACS Omega. 2024 Feb 16;9(8):8709-8729. doi: 10.1021/acsomega.3c08939. eCollection 2024 Feb 27.
Agricultural runoff, fuel spillages, urbanization, hospitalization, and industrialization are some of the serious problems currently facing the world. In particular, byproducts that are hazardous to the ecosystem have the potential to mix with water used for drinking. Over the last three decades, various techniques, including biodegradation, advanced oxidation processes (AOPs), (e.g., photocatalysis, photo-Fenton oxidation, Fenton-like oxidation, and electrochemical oxidation process adsorption), filtration, and adsorption techniques, have been developed to remove hazardous byproducts. Among those, AOPs, photocatalysis has received special attention from the scientific community because of its unusual properties at the nanoscale and its layered structure. Recently, bismuth based semiconductor (BBSc) photocatalysts have played an important role in solving global energy demand and environmental pollution problems. In particular, bismuth-based Z-scheme heterojunction (BBZSH) is considered the best alternative route to overhaul the limitations of single-component BBSc photocatalysts. This work aims to review recent studies on a new type of BBZSH photocatalysts for the treatment of contaminated water. The general overview of the synthesis methods, efficiency-enhancing strategies, classifications of BBSc and Z-scheme heterojunctions, the degradation mechanisms of Z- and S-schemes, and the application of BBZSH photocatalysts for the degradation of organic dyes, antibiotics, aromatics compounds, endocrine-disrupting compounds, and volatile organic compounds are reviewed. Finally, challenges and the future perspective of BBZSH photocatalysts are discussed.
农业径流、燃油泄漏、城市化、医疗保健以及工业化是当今世界面临的一些严峻问题。特别是，对生态系统有害的副产品有可能混入饮用水中。在过去三十年里，人们开发了各种技术来去除有害副产品，包括生物降解、高级氧化工艺（AOPs）（如光催化、光芬顿氧化、类芬顿氧化和电化学氧化过程吸附）、过滤和吸附技术。其中，AOPs中的光催化因其在纳米尺度上的特殊性质及其层状结构而受到科学界的特别关注。近年来，铋基半导体（BBSc）光催化剂在解决全球能源需求和环境污染问题方面发挥了重要作用。特别是，铋基Z型异质结（BBZSH）被认为是克服单组分BBSc光催化剂局限性的最佳替代途径。这项工作旨在综述新型BBZSH光催化剂处理污水的最新研究。综述了合成方法、效率提高策略、BBSc和Z型异质结的分类、Z型和S型的降解机理以及BBZSH光催化剂在降解有机染料、抗生素、芳香族化合物、内分泌干扰化合物和挥发性有机化合物方面的应用。最后，讨论了BBZSH光催化剂面临的挑战和未来前景。
