Alkali treated Ti3C2Tx MXenes and their dye adsorption performance

被引：212

作者：

Zheng Wei ^{[1
]}

Zhang Peigen ^{[1
]}

Tian Wubian ^{[1
]}

Qin Xia ^{[1
]}

Zhang Yamei ^{[1
]}

Sun ZhengMing ^{[1
,2
]}

机构：

[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2018年 / 206卷

基金：

中国国家自然科学基金;

关键词：

MXene; Ti3C2Tx; Alkalization; Intercalation; Adsorption; 2-DIMENSIONAL TITANIUM CARBIDE; METHYLENE-BLUE; WATER-PURIFICATION; AQUEOUS-SOLUTION; REMOVAL; INTERCALATION; COMPOSITES; BEHAVIOR; MECHANISM; EFFICIENT;

D O I：

10.1016/j.matchemphys.2017.12.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To modify the adsorption performance of Ti3C2Tx MXene, we report a facile approach to expand the interlayer spacing of Ti3C2Tx and to tune its surface functional groups by hot alkaline solution treatment. In the treatment, the interlayer spacing of Ti3C2Tx MXene is increased by up to 29% by LiOH, and the surface functional groups are tuned by converting -F to -OH. Among the MXenes, LiOH-Ti3C2Tx and NaOH Ti3C2Tx can faster adsorb methylene blue (MB) than other MXene adsorbents; NaOH Ti3C2Tx possesses the highest adsorption capacity (189 mg/g) for MB, which can be ascribed to the cooperation of surface adsorption and intercalation adsorption. The experimental data suggest that the enhanced adsorption toward cationic dyes can be best described by a Langmuir isotherm. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：270 / 276

页数：7

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