Fabrication of alginate-derived MoS_(2)@C photocatalyst with enhanced visible-light activity for tetracycline degradation  

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作  者:Jingkun Zhao Shuaikang Yao Yingjie Huang Siyu Gao Shangru Zhai Qingda An Zuoyi Xiao Feng Zhang 

机构地区:[1]Liaoning Key Lab of Lignocellulose Chemistry and Biomaterials,Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery,College of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China [2]Hoffmann Institute of Advanced Materials,Postdoctoral Innovation Practice Base,Shenzhen Polytechnic University,Nanshan District,Shenzhen 518055,China

出  处:《Frontiers of Materials Science》2025年第1期17-29,共13页材料学前沿(英文版)

基  金:supported by the National Natural Science Foundation of China(Grant Nos.22075034 and 22178037);the China Scholarship Council(CSC No.202008210171).

摘  要:It is undoubtedly a challenge to design an efficient and recyclable photocatalyst for the degradation of tetracycline(TC).In this study,a MoS_(2)@C composite catalyst was fabricated through the simple sulfurization of alginate-based spheres encapsulating ammonium molybdate by thiourea.The incorporation of porous carbon as a co-catalyst significantly augmented reactive active sites,endowing it with great specific surface area and effectively preventing the aggregation of MoS_(2)nanoparticles.While offering abundant catalytic sites for the reaction,the structure with interconnected channels promoted the adsorption of the reactant.The MoS_(2)@C composites showed excellent photocatalytic performance,achieving a photodegradation ratio of 87.01%for TC within 60 min,superior to that of pure MoS_(2).Additionally,the photocatalytic mechanism for the degradation of TC was also investigated through free radical trapping experiments in combination with the electron spin resonance technique.

关 键 词:photocatalytic degradation 3D porous carbon MoS_(2) TETRACYCLINE sodium alginate 

分 类 号:O643.3[理学—物理化学]

 

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