现代化工

现代化工 ›› 2023, Vol. 43 ›› Issue (5) : 220-224,229. DOI: 10.16606/j.cnki.issn0253-4320.2023.05.042

分析测试

3D金纳米胶囊SERS基底对食品污染物的快速检测

汪胜, 栾龙龙, 范维维, 郑豆豆, 张艺欣, 徐维平

作者信息 +

Rapid detection of contaminants in food by 3D gold nano capsule SERS basement

Author information +

文章历史 +

Received		Published
2022-05-10		2023-05-20
Issue Date	Revised Date
2023-05-16	2022-05-10

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摘要

首先采用种子生长法合成金纳米双锥体,再通过水和正丁醇的乳化体系液液组装而形成3D纳米胶囊。这些金胶体具有六边形密排多层壳,由于强粒子间等离子体耦合,显示出低反射率和强宽带吸收。结晶紫(CV)作为探针分子具有较高的灵敏性和重复性,同时,对孔雀石绿(MG)、福美双(THR)、噻苯咪唑(TBZ)的检测极限均达到了10^-9 mol/L。

Abstract

Firstly,a gold nano bipyramid is prepared by the seed growth method.Then,3D nano capsules are prepared through liquid-liquid assembly of water/n-butanol emulsion system.These gold colloids have hexagonal densely packed multilayer shells and exhibit low reflectivity and strong broadband absorption due to strong interparticle plasma coupling.Crystal violet (CV) as a probe molecule has high sensitivity and repeatability,and its detection limits for malachite green,thiram and thiabendazole all reach 10^-9 mol·L^-1.