Wang Fei, Liu Shan-Shan, Feng Ziyue, Fu Huifen, Wang Mengyu, Wang Peng, Liu Wen, Wang Chong-Chen
Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China.
Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China.
J Hazard Mater. 2022 Oct 15;440:129723. doi: 10.1016/j.jhazmat.2022.129723. Epub 2022 Aug 6.
FeS@MoS-x (FM-x, x implied real Mo/Fe content ratios) in which FeS derived from MIL-88A deposited on the surface of MoS with a tight heterogeneous interface were synthesized for peroxymonosulfate (PMS) activation to degrade atrazine (ATZ). The catalytic performance of FM-0.96 was greatly improved due to the rapid regeneration of Fe resulting from the interfacial interaction. FM-0.96 could completely degrade 10.0 mg/L ATZ within 1.0 min, and the toxicities for most of its intermediates were greatly reduced. The k value of FM-0.96 was 320 and 40 times higher than that of the MoS and FeS, respectively. The SO·, ·OH and O were mainly responsible for ATZ degradation in FM-0.96/PMS system, and the conversion pathway of O was analyzed. Furthermore, the long-term continuous operation for ATZ degradation was achieved using a fixed membrane reactor. This work provides deep insights into metal sulfide composites derived from metal-organic frameworks for removing pollutants by activating PMS.
合成了FeS@MoS-x（FM-x，x表示实际的Mo/Fe含量比），其中源自MIL-88A的FeS沉积在具有紧密异质界面的MoS表面上，用于过一硫酸盐（PMS）活化以降解阿特拉津（ATZ）。由于界面相互作用导致铁的快速再生，FM-0.96的催化性能得到了极大提高。FM-0.96能够在1.0分钟内完全降解10.0 mg/L的ATZ，并且其大多数中间体的毒性大大降低。FM-0.96的k值分别比MoS和FeS高320倍和40倍。SO·、·OH和O主要负责FM-0.96/PMS体系中ATZ的降解，并分析了O的转化途径。此外，使用固定膜反应器实现了ATZ降解的长期连续运行。这项工作为通过活化PMS去除污染物的金属有机框架衍生的金属硫化物复合材料提供了深入见解。
