银纳米星纳米材料的制备及其对食用色素的SERS检测研究  

Preparation of Silver Nanostar and Their Application in SERS Detection of Food Colorants

作　　者：王志诚 王佰成 邓立坤 王晨旭 王昊 王聪 秦苗 WANG Zhi-cheng;WANG Bai-cheng;DENG Li-kun;WANG Chen-xu;WANG Hao;WANG Cong;QIN Miao(School of Chemistry&Chemical Engineering,Suzhou University,Anhui Suzhou 234000,China)

机构地区：[1]宿州学院化学化工学院,安徽宿州234000

出　　处：《广州化工》2024年第14期20-23,66,共5页GuangZhou Chemical Industry

基　　金：“宿州学院资助国家级大学生创新创业训练计划项目”(项目名称:“纳米腔SERS空间热点对偶氨化合物光致异构过程的原位动态监测研究”);2022年度安徽省质量工程“四新”研究与改革实践项目“新工科”背景下地方性应用型高校应用化学专业实践教学改革探索与实践(2022sx150)。

摘　　要：使用盐酸羟胺化学还原Ag^(+),然后在柠檬酸盐的诱导下制备银纳米星(AgNS)。利用紫外-可见光谱(UV-Vis)和扫描电子显微镜(SEM)对纳米颗粒的形貌进行表征,结果表明,纳米颗粒呈星形形貌,中心颗粒在顶点处具有几条臂状或低锐度的突起。使用结晶紫(CV)为探针分子探究AgNS作为表面增强拉曼散射(SERS)基底的增强性能,检测最低浓度达到10^(-9)M。进一步使用AgNS作为SERS基底检测食品中的食用色素橙黄Ⅱ、柠檬黄、苋菜红,得到良好的检测灵敏度,检测限可达10μg/mL,为SERS技术在食品安全检测领域的应用提供很好的应用前景。Silver nanostars(AgNS)were prepared by chemical reduction of Ag^(+)using hydroxylamine hydrochloride followed by citrate induction.The morphology of the nanoparticles was characterized using ultraviolet-visible spectroscopy(UV-Vis)and scanning electron microscopy(SEM),which showed that the nanoparticles had a stellate morphology with the central particle having several arm-like or low sharp protrusions at the apex.The enhanced performance of AgNS as a surface-enhanced Raman scattering(SERS)substrate was investigated using crystalline violet(CV)as a probe molecule,and the detection was performed at a minimum concentration of 10^(-9) M.Further,good detection sensitivity was obtained with a detection limit of 10μg/mL using AgNS as a SERS substrate for the detection of food coloring orange Ⅱ,lemon yellow,and amaranth red in food,which provided a good basis for the application of SERS technology in the detection limits were up to 10μg/mL,providing a good application prospect for the application of SERS technology in the field of food safety detection.

关 键 词：银纳米星 表面增强拉曼散射 橙黄Ⅱ 柠檬黄 苋菜红 

分 类 号：O657.37[理学—分析化学]