Metallic 1T/1T′ phase TMD nanosheets with enhanced chemisorption sites for ultrahigh-efficiency lead removal

Liang Mei, Mingzi Sun, Ruijie Yang, Yaqin Zhang, Yuefeng Zhang, Zhen Zhang, Long Zheng, Ye Chen, Qinghua Zhang, Jiang Zhou, Ye Zhu, Kenneth M. Y. Leung, Wenjun Zhang, Jun Fan, Bolong Huang (), Xiao Cheng Zeng, Hyeon Suk Shin, Chuyang Y. Tang, Lin Gu (), Damien Voiry and Zhiyuan Zeng ()
Additional contact information
Liang Mei: City University of Hong Kong
Mingzi Sun: The Hong Kong Polytechnic University
Ruijie Yang: City University of Hong Kong
Yaqin Zhang: City University of Hong Kong
Yuefeng Zhang: City University of Hong Kong
Zhen Zhang: City University of Hong Kong
Long Zheng: The Chinese University of Hong Kong
Ye Chen: The Chinese University of Hong Kong
Qinghua Zhang: Chinese Academy of Sciences
Jiang Zhou: Central South University
Ye Zhu: Department of Applied Physics, Research Institute for Smart Energy, The Hong Kong Polytechnic University
Kenneth M. Y. Leung: State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong
Wenjun Zhang: City University of Hong Kong
Jun Fan: City University of Hong Kong
Bolong Huang: The Hong Kong Polytechnic University
Xiao Cheng Zeng: City University of Hong Kong
Hyeon Suk Shin: Center for 2D Quantum Heterostructures, Institute for Basic Science, Sungkyunkwan University (SKKU)
Chuyang Y. Tang: Department of Civil Engineering, The University of Hong Kong
Lin Gu: Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University
Damien Voiry: Institut Européen des Membranes, IEM, UMR 5635, Université Montpellier, ENSCM, CNRS
Zhiyuan Zeng: City University of Hong Kong

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Two-dimensional (2D) materials, as adsorbents, have garnered great attention in removing heavy metal ions (HMIs) from drinking water due to their extensive exposed adsorption sites. Nevertheless, there remains a paucity of experimental research to remarkably unlock their adsorption capabilities and fully elucidate their adsorption mechanisms. In this work, exceptional lead ion (Pb2+) (a common HMI) removal capacity (up to 758 mg g−1) is achieved using our synthesized metallic 1T/1T′ phase 2D transition metal dichalcogenide (TMD, including MoS2, WS2, TaS2, and TiS2) nanosheets, which hold tremendous activated S chemisorption sites. The residual Pb2+ concentration can be reduced from 2 mg L−1 to 2 μg L−1 within 0.5 min, meeting the drinking water standards following World Health Organization guideline (Pb2+ concentrations

Date: 2024
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DOI: 10.1038/s41467-024-52078-y

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