Mercury(编程语言)
材料科学
环境修复
硫黄
氯化物
二硫化钼
纳米技术
环境化学
三硝基甲苯
钼
水溶液中的金属离子
金属
化学工程
冶金
污染
化学
爆炸物
计算机科学
有机化学
生态学
生物
程序设计语言
工程类
作者
Kelong Ai,Changping Ruan,Mengxia Shen,Lehui Lu
标识
DOI:10.1002/adfm.201601338
摘要
Molybdenum disulphide (MoS 2 ) has been an attractive target for investigations in the fields of catalysis, sensing, energy storage, electronics, and optoelectronics. However, its potential application in the important area of environmental cleanup has not yet been effectively explored. With an intrinsically sulfur‐rich characteristic and unique 2D structure, MoS 2 should be capable of mercury capture and removal. However, successful attempts to apply MoS 2 to mercury removal are quite rare, presumably because the vast majority of sulfur atoms are located inside the bulk of MoS 2 and are therefore inaccessible for mercury ions. Here, the first experimental evidence that MoS 2 nanosheets with widened interlayer spacing are capable of mercury capture, with an extremely high mercury uptake capacity closely matching the theoretically predicted value (2506 mg g −1 ) and the largest distribution coefficient value (3.53 × 10 8 mL g −1 ) is provided. Remarkably, a single treatment of industrial wastewater (polyvinyl chloride industry) with this modified MoS 2 could efficiently reduce the mercury concentration (126 p.p.b.) below U.S. Environmental Protection Agency limits for drinking water standards. The findings open up the possibility of expanding the applications of transition metal dichalcogenides in environmental remediation.
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