【作者】 赵弘韬； 李志刚； 张楠； 斯琴图雅； 王强； 徐平； 杜耘辰；

【Author】 ZHAO Hong-tao;LI Zhi-gang;ZHANG Nan;SIQIN Tu-ya;WANG Qiang;XU Ping;DU Yun-chen;Technical Physics Institute of Heilongjiang Academy of Sciences;Institute of Advanced Technology of Heilongjiang Academy of Sciences;HIT-HAS Laboratory of High-Energy Chemistry and Interdisciplinary Science;Harbin Institute of Technology;

【机构】 黑龙江省科学院技术物理研究所； 黑龙江省科学院高技术研究院； 哈尔滨工业大学黑龙江省科学院高能化学及交叉科学联合实验室； 哈尔滨工业大学；

【摘要】 金纳米催化剂作为最有发展潜力的催化材料之一,近年来得到广泛关注。在对其众多的合成方法中,如何降低由于小尺寸效应和高比表面积效应造成的粒子间团聚是重要的课题。本文在辐射场下,一步法制备了还原氧化石墨烯/金(rGO/Au)复合材料并对其催化性能进行了研究,材料制备过程中不加入任何表面活性剂或其他还原试剂,降低了引入杂原子的可能性,有利于提高材料的纯度,促进催化性能的提高。复合材料的表征结果证明,金纳米粒子均匀分散在rGO表面,尺寸约为10 nm。在紫外分光光度计下研究了复合材料的光催化性能,结果显示,辐射法所制备的复合材料对有机染料亚甲基蓝的降解有良好的催化效果。本文采用核技术手段,为制备还原氧化石墨烯-纳米贵金属催化材料提供了一个新的方法。更多还原

【Abstract】 Noble metal particles of nanosized have attracted wide spread attentions because of their unusual physicochemical properties compared with bulk materials.As one of the most promising nanocatalysts,gold nanoparticles have been extensively explored for a variety of catalytic reactions in recent years.To overcome the aggregation of the smaller Au NPs which caused by higher surface energy and small size effect is an important issue.In this paper,rGO/Au composite has been prepared via a one pot in situ method.The preparation of the composite is free of surfactant and chemical reducing agents which is benefit to the purity of the product and enhancement of the catalytic properties.The characterization shows that Au nanoparticles are dispersed on the surface of rGO uniformly with the particle size of about 10 nm.The catalytic property was investigate by UVVis spectrum.The results indicate the composite has a good catalytic effect to the degradation of methylene blue(MB).The research provide a new method for the preparation of functional nanomaterials through nuclear technology.更多还原