3D layer-by-layer amorphous MoSx assembled from[Mo3S13]2-clusters for efficient removal of tetracycline:Synergy of adsorption and photo-assisted PMS activation

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外文摘要：Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pol-lutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional catalyst of amorphous MoSx(a-MoSx)with 3D layer-by-layer superstructure was synthesized by assembling basic active units[Mo3S13]2-of MoS2.The large interlayer spacing and high exposure of active sites render a-MoSx to have excellent synergy of adsorption and photo-assisted PMS activation for tetracycline(TC)degradation.Experiments and DFT calculation show that TC can be efficiently enriched on a-MoSx by pore filling,π-π interaction,hydrogen bonding and high adsorption energy.Subsequently,PMS can be quickly activated through electron transfer with a-MoSx,resulting in high TC degradation ef-ficiency of 96.6％within 20 min.In addition,the synergistic mechanism of adsorption and photo-assisted PMS activation was explored,and the degradation pathway of TC was expounded.This work is inspira-tional for constructing bifunctional catalysts with superior synergistic adsorption and catalytic capabilities to remove refractory organic pollutants in water.

外文关键词：

Bifunctional catalyst[Mo3S13]2-AdsorptionPhoto-assisted PMS activationActive sites

作者：

Yue Li、Minghao Fan、Conghui Wang、Yanxun Li、Xiang Yu、Jun Ding、Lei Yan、Lele Qiu、Yongcai Zhang、Longlu Wang

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作者单位：

School of Chemical and Printing-Dyeing Engineering,Henan International Joint Laboratory of Rare Earth Composite Materials,Henan University of Engineering,Xinzheng 451191,China

School of Material Science and Engineering,Henan Polytechnic University,Jiaozuo 454001,China

School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225009,China

College of Electronic and Optical Engineering & College of Microelectronics,Institute of Flexible Electronics(Future Technology),Nanjing University of Posts& Telecommunications,Nanjing 210023,China

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出版年：

2024

DOI：

10.1016/j.cclet.2024.109764

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(9)