Fu Hao, Deng Yuxiang, Cai Zhenyu, Pan Yuehua, Yang Libo, Fujita Toyohisa, Wang Nannan, Wang Youbin, Wang Xinpeng
School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, PR China; School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China; State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, PR China.
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, PR China; State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Nanning 530004, PR China.
J Hazard Mater. 2024 Feb 5;463:132820. doi: 10.1016/j.jhazmat.2023.132820. Epub 2023 Oct 21.
In water bodies, the coexistence of and interaction between multiple pollutants complicate remediation. In this study, the InO @ZnInS Z-scheme heterojunction with a stratified core-shell structure was constructed and used to remove multiple pollutants (tetracycline hydrochloride and Cr(VI)). The large number of active sites and the mechanism of photogenerated charge separation ensured the substantially enhanced catalytic activity of this photocatalyst, making it superior to InO nanospheres and pure ZnInS. The optimised InO @ZnInS nano-flowers (InO @ZnInS NFs) realised 99.8% removal of tetracycline hydrochloride and 100% removal of Cr(VI) within 60 min under visible-light. The material's high stability was demonstrated by five experiment cycles. Effects of organics, inorganics, and pH about the photocatalytic performance of the optimised InO @ZnInS NFs when tetracycline hydrochloride and Cr(VI) coexist were also explored. Finally, the intermediates and degradation pathways were analysed, and the possible photocatalytic mechanism was also investigated by performing density functional theory calculations.
在水体中，多种污染物的共存和相互作用使修复工作变得复杂。在本研究中，构建了具有分层核壳结构的InO@ZnInS Z型异质结，并用于去除多种污染物（盐酸四环素和Cr(VI)）。大量的活性位点和光生电荷分离机制确保了该光催化剂的催化活性大幅提高，使其优于InO纳米球和纯ZnInS。优化后的InO@ZnInS纳米花（InO@ZnInS NFs）在可见光下60分钟内实现了99.8%的盐酸四环素去除率和100%的Cr(VI)去除率。五个实验循环证明了该材料的高稳定性。还探讨了有机物、无机物和pH值对优化后的InO@ZnInS NFs在盐酸四环素和Cr(VI)共存时光催化性能的影响。最后，分析了中间产物和降解途径，并通过进行密度泛函理论计算研究了可能的光催化机理。
