银纳米团簇复合材料的辐射法制备及性能研究  

Preparation and properties of Ag nanocluster composites by radiation method

作　　者：韩斐 汪文睿 李聃屹 沈蓉芳 蒋海青[1,2] 李吉豪 李林繁[1,2] HAN Fei;WANG Wenrui;LI Danyi;SHEN Rongfang;JIANG Haiqing;LI Jihao;LI Linfan(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049

出　　处：《核技术》2023年第5期28-34,共7页Nuclear Techniques

基　　金：甘肃省自然科学基金(No.20JR10RA778,No.20JR10RA777)资助。

摘　　要：银纳米团簇作为一种新兴的纳米材料,由于其极小的尺寸,表现出独特的物理化学性能,得到了广泛的关注。本文利用辐射技术设计了一种简单有效的银纳米团簇复合材料的制备方法。利用聚丙烯酸类聚合物分子链携带的羧基,通过辐射还原直接获得了银纳米团簇水溶液。基于辐射接枝技术,将聚丙烯酸模板接枝到不同基体材料上得到固体模板。利用固体模板代替水溶性模板材料,实现了银纳米团簇在固体模板上的原位合成,直接得到银纳米团簇复合材料。制备的银纳米团簇及其复合材料依旧保有银纳米团簇光致发光及催化活性,在金属离子检测和催化4-硝基酚还原加氢具有应用潜力。同时,基体材料的结构与银纳米团簇也会形成协同作用,提高银纳米团簇的使用性能。利用辐射技术简化银纳米团簇复合材料的合成路线,对于不同基体材料具有普适性,扩宽了银纳米团簇复合材料的潜在应用领域。[Background]Silver nanoclusters,being a novel variety of nanomaterial,have garnered significant attention owing to their exceedingly minute dimensions,and distinct physical and chemical characteristics.[Purpose]This study aims to present a straightforward and efficient method for fabricating silver nanoclusters composites using radiation technology.[Methods]Firstly,silver nanoclusters in aqueous solution were directly synthesized through radiation reduction.By means of radiation grafting technique,polyacrylic acid templates was grafted onto an array of matrix materials,thereby producing solid templates.Subsequently,these solid templates were employed to achieve in situ synthesis of silver nanoclusters composites,obviating the need for water-soluble template materials.Finally,the fluorescence detection performance and catalytic performance of silver nanoclusters were tested by fluorescence spectrometer and the UV visible spectrum.[Results]The silver nanoclusters and composites prepared in this study have retained the photoluminescence and catalytic activity characteristic of silver nanoclusters,thereby presenting potential applications in metal ion detection and catalytic degradation of 4-nitrophenol.Furthermore,it is noteworthy that the combination of the base material and silver nanoclusters is capable of manifesting a synergistic effect,thereby enhancing the overall performance of silver nanoclusters.[Conclusions]The utilization of radiation technique has enabled a simplified route of silver nanocluster composites.In addition,the versatility of this synthesis route extends across a variety of matrix materials,thereby broadening the scope of potential applications for silver nanocluster composites.

关 键 词：辐射还原 辐射接枝 银纳米团簇 荧光 催化 

分 类 号：TL99[核科学技术—核技术及应用]