金多孔纳米片的一锅法制备及其在SERS检测中的应用  

One-Pot Preparation of Gold Porous Nanoplates and Their Application in SERS Detection

作　　者：王翠萍 张欢 吴国强[1] 洪艳平[1] 颜贤仔[1] 余莉莉[1] 王纯荣[1] Wang Cuiping;Zhang Huan;Wu Guoqiang;Hong Yanping;Yan Xianzai;Yu Lili;Wang Chunrong(School of Food Science&Engineering,Jiangxi Agricultural University,Nanchang 330045,China)

机构地区：[1]江西农业大学食品科学与工程学院,江西南昌330045

出　　处：《稀有金属材料与工程》2022年第10期3655-3662,共8页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China (31960500);Science and Technology Project of Education Department of Jiangxi Province (170282)。

摘　　要：设计并构建多样的金微纳米结构是实现表面增强拉曼光谱(SERS)信号放大的合理途径。利用氯金酸与聚乙二醇(PEG)的氧化还原反应,通过水热合成法制备出金多孔纳米片。PEG在制备过程中既是包裹剂又是还原剂。该制备方法反应温度比较温和,采用一锅法一步合成工艺,成本效益高且环境友好。所制备的金多孔片尺寸多为微米级,清洗后表面没有有机物污染。EDS分析进一步证实所制备的多孔片结构为金单质。结果表明,金多孔纳米片的形貌可通过反应时间、PEG浓度和金离子浓度等实验参数进行调整。金多孔纳米片制备的拉曼光谱基底具有优异的SERS光谱增强效果,并在检测中表现出良好的重现性。另外,所制备的金纳米多孔片基底实现了有机农药福美双和甲拌磷的快速灵敏分析检测。Design and fabrication of various gold micro-and nanostructures is a promising way to amplify surface enhanced Raman scattering(SERS)signals.Gold porous nanoplates were produced by simple heating aqueous solutions of HAuCl_(4) and polyethylene glycol(PEG).The reaction was carried out in a one-pot,by one-step process at mild temperature,and PEG was used as capping agent and reducing agent in this cost-effective and environmentally benign fabrication strategy.Results show that the gold porous plates are about several micrometers in size and can be modified by experimental parameters such as growth time,PEG concentration,and gold ion concentration.The EDS measurements confirm the metallic nature of the cleaned gold porous nanoplates with no organic contaminants on the surface.The gold porous nanoplate substrate offers an excellent SERS-effect and exhibits a good reproducibility in SERS detection.Importantly,the as prepared gold porous plate substrates can be used for rapid and highly sensitive determination of organic pesticides such as thiram and phorate.

关 键 词：金 多孔纳米片 SERS 聚乙二醇 

分 类 号：O657.37[理学—分析化学] TB383.1[理学—化学]