纳米银颗粒原位生长于氧化石墨烯银盐纳米复合材料的简易合成及其抗菌性能（英文）  

Nanohybrids of silver nanoparticles grown in-situ on a graphene oxide silver ion salt: simple synthesis and their enhanced antibacterial activity

作　　者：熊开容[1,2] 梁业如[1] 欧阳毅[1] 吴丁财[1] 符若文[1] XIONG Kai-rong;LIANG Ye-ru;OU-YANG Yi;WU Ding-cai;FU Ruo-wen(Materials Science Institute, PCFM Laboratory, School of Chemistry,Sun Yat-sen University, Guangzhou 510275, China;School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China)

机构地区：[1]中山大学材料科学研究所聚合物复合材料及功能材料教育部重点实验室,广东广州510275 [2]广东工业大学环境科学与工程学院,广东广州510006

出　　处：《新型炭材料》2019年第5期426-433,I0011-I0017,共15页New Carbon Materials

基　　金：National Natural Science Foundation of China(U1601206,51872336,51422307,51602107,51702262);National Social Science Foundation of China(17BXW104);National Program for Support of Top-notch Young Professionals;Science Foundation of Ministry of Education of China(15YJC630141);Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program(2014TQ01C337);Fundamental Research Funds for the Central Universities(18lgzd10)~~

摘　　要：可防治感染性疾病的先进抗菌材料一直是社会的重大需求。目前,各式各样含银纳米抗菌材料已被合成出来,并被认为可应用于许多商业产品领域中。然而,整合与创新基于纳米银的微/纳米结构,对于制备得到性能优异的抗菌剂仍颇具挑战性。基于此,利用简易的超声混合方法,成功合成了一类纳米银颗粒原位生长于氧化石墨烯银盐的纳米复合材料。通过扫描电子显微镜、透射电子显微镜、傅里叶变换红外光谱仪、热重分析仪、X-射线衍射分析仪和X-射线光电子能谱仪等现代分析手段对所得材料纳米结构进行了研究。结果表明,氧化石墨烯不仅可作为带负电荷的大分子捕获大量带正电的银离子,还可作为还原剂将银离子原位还原成纳米银粒子,由此得到了在氧化石墨烯表面同时含有均匀分散的纳米银粒子和银离子的杂化结构。这一先进结构使得所制备的纳米复合材料可充分利用银纳米粒子及氧化石墨烯银盐二者的优势,对金葡菌和大肠杆菌表现出强的抗菌活性和持久的抗菌能力,是一种高效的抗菌剂。Advanced antimicrobial agents that treat infectious diseases are greatly needed. Various silver-based nanomaterials have been developed and are considered potential candidates for many commercial products, but they lack durability and adequate antibacterial activity. A new class of nanohybrids of silver nanoparticles (AgNPs) grown in-situ on graphene oxide (GO) using a silver ion salt was synthesized by a simple ultrasonic mixing method. The structure and composition of the nanohybrids were investigated by SEM, TEM, FTIR, TGA, XRD and XPS. Results indicated that GO acts not only as a negatively charged macromolecule for capturing Ag + ions, but also a reducing agent to reduce the Ag + ions to AgNPs. The heterogeneous structure leads to abundant well-dispersed AgNPs and Ag + ions on the GO support. The as-prepared nanohybrids make full use of the advantages of both AgNPs and GO-Ag + salts, leading to improved and long-term antibacterial activity against both S.aureus and E. coli .

关 键 词：氧化石墨烯银盐 纳米银颗粒 简易合成 纳米杂化材料 持久抗菌性能 

分 类 号：TB33[一般工业技术—材料科学与工程]