纳米片
材料科学
铬
水溶液
吸附
碳化钛
钛
碳化物
水处理
六价铬
蚀刻(微加工)
化学工程
MXenes公司
无机化学
核化学
纳米技术
冶金
环境工程
图层(电子)
化学
有机化学
工程类
作者
Yulong Ying,Yu Liu,Xinyu Wang,Yuxin Mao,Wei Cao,Pan Hu,Xinsheng Peng
摘要
Two dimensional (2-D) Ti3C2Tx nanosheets are obtained by etching bulk Ti3C2Tx powders in HF solution and delaminating ultrasonically, which exhibit excellent removal capacity for toxic Cr(VI) from water, due to their high surface area, well dispersibility, and reductivity. The Ti3C2Tx nanosheets delaminated by 10% HF solution present more efficient Cr(VI) removal performance with capacity of 250 mg g–1, and the residual concentration of Cr(VI) in treated water is less than 5 ppb, far below the concentration (0.05 ppm) of Cr(VI) in the drinking water standard recommended by the World Health Organization. This kind of 2-D Ti3C2Tx nanosheet can not only remove Cr(VI) rapidly and effectively in one step from aqueous solution by reducing Cr(VI) to Cr(III) but also adsorb the reduced Cr(III) simultaneously. Furthermore, these reductive 2-D Ti3C2Tx nanosheets are generally explored to remove other oxidant agents, such as K3[Fe(CN)6], KMnO4, and NaAuCl4 solutions, by converting them to low oxidation states. These significantly expand the potential applications of 2-D Ti3C2Tx nanosheets in water treatment.
科研通智能强力驱动
Strongly Powered by AbleSci AI