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

• Published in: Nature communications 2024-09, Vol.15 (1), p.7770-13, Article 7770
• Main Authors: Mei, Liang, Sun, Mingzi, Yang, Ruijie, Zhang, Yaqin, Zhang, Yuefeng, Zhang, Zhen, Zheng, Long, Chen, Ye, Zhang, Qinghua, Zhou, Jiang, Zhu, Ye, Leung, Kenneth M. Y., Zhang, Wenjun, Fan, Jun, Huang, Bolong, Zeng, Xiao Cheng, Shin, Hyeon Suk, Tang, Chuyang Y., Gu, Lin, Voiry, Damien, Zeng, Zhiyuan
• Format: Article
• Language: English
• Subjects: 119/118; 147/135; 147/137; 147/143; 147/3; 639/301/357/1018; 639/638/169/896; Activated carbon; Adsorbents; Adsorption; Chalcogenides; Chemical bonds; Chemisorption; Density functional theory; Drinking behavior; Drinking water; Experimental research; Heavy metals; Humanities and Social Sciences; Lead; Metal ions; Molybdenum disulfide; multidisciplinary; Nanosheets; Science; Science (multidisciplinary); Sulfur; Transition metal compounds; Two dimensional materials; Water quality standards
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-024-52078-y

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 (Pb 2+ ) (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 MoS 2 , WS 2 , TaS 2 , and TiS 2 ) nanosheets, which hold tremendous activated S chemisorption sites. The residual Pb 2+ 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 (Pb 2+ concentrations