材料科学
MXenes公司
碳化钛
插层(化学)
微观结构
模数
基质(化学分析)
钛
自愈
碳化物
纳米技术
化学工程
复合材料
化学
有机化学
冶金
替代医学
病理
工程类
医学
作者
Hongwu Chen,Hongyun Ma,Panpan Zhang,Yeye Wen,Liangti Qu,Chun Li
出处
期刊:ACS Nano
[American Chemical Society]
日期:2020-07-17
卷期号:14 (8): 10471-10479
被引量:96
标识
DOI:10.1021/acsnano.0c04379
摘要
The hydrogel matrix normally forms via covalent or noncovalent interactions that make the matrix resistant to hydration and disassembly. Herein this type of chemical transition is demonstrated in titanium carbide MXene (Ti3C2Tx), in which the exchange of intercalated Li+ with hydrated protons triggers significantly suppressed hydration in stacked Ti3C2Tx. Based on this intercalation chemistry behavior, pristine Ti3C2Tx hydrogel matrices with an arbitrary microstructures are fabricated by freezing-induced preassembly and a subsequent specially designed thawing process in protic acids. The absence of extrinsic components maximizes the materials performance of the resultant pristine Ti3C2Tx hydrogel, which produces a compressive modulus of 2.4 MPa and conductivity of 220.3 ± 16.8 S/m at 5 wt % solid content. The anisotropic Ti3C2Tx hydrogel also delivers a promising performance in solar steam generation by facilitating rapid water transport inside vertical microchannels.
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