文献类型：期刊文献

英文题名：Development of Monolithic Hyper-Cross-Linked Polystyrene-Supported Ultrasmall Nano-Ag Catalysts for Enhanced NaBH4-Mediated Dye Degradation

作者：Xue, Tao[1];Li, Hui[1];Wang, Yuying[1];Miao, Han[2];Li, Xinxin[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related Tech, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat,Key Lab Ultrafine, Shanghai 200237, Peoples R China

年份：2024

卷号：40

期号：48

起止页码：25460

外文期刊名：LANGMUIR

收录：;EI(收录号：20244817417792);WOS:【SCI-EXPANDED(收录号:WOS:001358974200001)】；

基金：The authors are grateful for the financial support provided by the Fundamental Research Funds for the Central Universities (Grant JKD01221701), the Shanghai Pujiang Program (Grant 21PJ1402100), and the Young Scientists Fund of the National Natural Science Foundation of China (Grant 52203258).

语种：英文

外文关键词：Biodegradation - Catalyst activity - Catalyst supports - Chlorine compounds - Coordination reactions - Crosslinking - Degradation - Metal nanoparticles - Nanocatalysts - Nanoclay - Silver nanoparticles - Synthesis (chemical)

摘要：Synthesizing catalyst supports with appropriate compositions and structures is crucial for reducing the sizes of metal nanoparticles and enhancing their catalytic activities. In this work, a series of monolithic hyper-cross-linked supports (HCP-CC) with hierarchical pores were synthesized. The monolithic structure facilitated easy operation in catalytic reactions, while the composition and structure of HCP-CC could be tailored simultaneously by utilizing the functional cross-linking agent cyanogen chloride. Furthermore, in situ loading of nano-Ag into HCP-CC resulted in the hybrid catalyst HCP-CC-Ag. The synergy of confinement and coordination effect controlled and limited the size of nano-Ag to approximately 3 nm, classifying them as ultrasmall nanoparticles, which ensured outstanding catalytic activity. This hybrid catalyst could improve the reaction rate constant to 0.423 min-1; it efficiently promoted the degradation of organic dye and exhibited great universality and recyclability, making it a potential heterogeneous catalyst for dye wastewater treatment.