光热治疗
硫化钴
材料科学
催化作用
降级(电信)
钴
碳化物
光催化
化学工程
硫化物
人体净化
光热效应
纳米技术
光化学
化学
有机化学
冶金
废物管理
物理化学
工程类
电信
电化学
计算机科学
电极
作者
Shu Guang Xia,Zhe Zhang,Ji Na Wu,Yang Wang,Ming Jun Sun,Yan Cui,Chong Zhao,Jin Zhong,Wei Cao,Huaping Wang,Maolin Zhang,Yong Zheng,Xu Bing Li
标识
DOI:10.1016/j.apcatb.2020.119703
摘要
Here, ultrathin cobalt carbide (Co2C) nanosheets are firstly illustrated as effective and robust catalysts toward photothermal degradation of sulfur mustard simulants (e.g., 2-chloroethyl ethyl sulfide, CEES) under solar light. Under the optimal conditions, the degradation rate of CEES by Co2C nanosheets is up to 98 %, which is much higher than the widely used P25 and anatase TiO2 nanoparticles. Moreover, the degradation performance is comparable or even better than those typical photothermal catalysts, including MnO2, MnOx-TiO2 and Co3O4, under identical conditions. Experimental evidences and density functional theory (DFT) calculations reveal that the superior activity is attributed to three main reasons: (i) the high photo-to-heat conversion efficiency of Co2C enables an elevated surface temperature for chemical bond breaking, (ii) the feasible binding of CEES on Co2C surface via CoS and CoCl coordination promotes the process of degradation, and (iii) the surface hydroxyl groups (OH) on Co2C nanosheets favor the degradation of CEES. Obviously, this work provides new insights into practical and large-scale application of transition metal carbides (TMCs) as novel photothermal catalysts in the decontamination of chemical warfare agents (CWAs) under ambient conditions (i.e., solar light and room temperature).
科研通智能强力驱动
Strongly Powered by AbleSci AI