MXene-based hydrogels have drawn considerable attention as flexible and wearable sensors.However,the application of MXene-based hydrogels after sensing failure has rarely been investigated,which is of great signifi-cance for expanding their engineering application.In this work,multi-functional mineral MXene hydrogels(MMHs)were synthesized via a simple method inspired by biomineralization.The prepared MMHs were stretchable,self-healable and conductive,and can be used to fabricate wearable tensile strain sensors showing a super-wide sensing range with excellent sensitivity.MMHs-based strain sensors were designed to be directly attached to the skin surface to detect tiny and large human motions.In addition,with the advantages of a large specific area,excellent hydrophilicity and abundant active adsorption sites for MXene nanosheets and hydrogels,dehydrated MMHs were used as highly efficient adsorbents for the removal of strontium ions from aqueous solutions.This work shows the great potential of MXene in promoting the development of next-generation functional materials.

School of Instrumentation Science and Opto-electronics Engineering,Beihang University,Beijing 100191,China;Department of Materials Science and Engineering,City University of Hong Kong,Kowloon Tong,Hong Kong SAR,China;Institute of Materials Science and Devices,Suzhou University of Science and Technology,Suzhou 215009,China;State Key Laboratory of Advanced Materials for Smart Sensing,General Research Institute for Nonferrous Metals,Beijing 100088,China;Department of Mechanical Engineering&Circular Economy Taskforce,National University of Singapore,Singapore 119077,Singapore

[1]Xin Li;Guangcun Shan;Ruguang Ma;Chan-Hung Shek;Hongbin Zhao;Seeram Ramakrishna-.Bioinspired mineral MXene hydrogels for tensile strain sensing and radionuclide adsorption applications)[J].物理学前沿,2022(06):110-118

MMHs

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