有序Au/Ag纳米碗阵列的简易制备及其表面增强拉曼散射性能  

Facile fabrication and surface-enhanced Raman scattering properties of ordered Au/Ag nanobowl array

作　　者：饶艳英 汪炳贵 李章良 陈学文 丘丽蓉 徐宏 黄建辉 RAO Yan‑Ying;WANG Bing‑Gui;LI Zhang‑Liang;CHEN Xue‑Wen;QIU Li‑Rong;XU Hong;HUANG Jian‑Hui(Fujian Provincial Key Laboratory of Ecology‑Toxicological Effects&Control for Emerging Contaminants,Key Laboratory of Ecological Environment and Information Atlas,Fujian Provincial University,College of Environmental and Biological Engineering,Putian University,Putian,Fujian 351100,China)

机构地区：[1]莆田学院环境与生物工程学院,福建省新型污染物生态毒理效应与控制重点实验室,生态环境及其信息图谱福建省高等学校重点实验室,莆田351100

出　　处：《无机化学学报》2023年第4期753-764,共12页Chinese Journal of Inorganic Chemistry

基　　金：福建省自然科学基金(No.2020J01914,2020J01912);莆田学院科技项目(No.2018060);福建省大学生创新创业项目(No.S202211498009)资助。

摘　　要：通过湿法化学合成基于SiO_(2)胶体晶体的大面积有序Au/Ag纳米碗(Au/AgNB)阵列。首先,在玻璃基板上组装3D SiO_(2)胶体晶体作为模板。然后,以Au纳米颗粒(AuNP)为种子,通过原位生长法在SiO_(2)模板上沉积一层Au纳米壳(AuNS)。再通过HCHO还原Ag^(+)成Ag0,进一步在AuNS表面沉积Ag纳米壳,形成Ag/Au双纳米壳(Ag/AuNS)阵列。最后通过丙烯酸酯改性双向取向聚丙烯(BOPP)膜方便地获得了单层有序反转Ag/AuNB阵列。这种有序Au/AgNB阵列具有更佳的表面增强拉曼散射(SERS)活性,其SERS分析增强因子(AEF)可达2.23×10^(7)。Herein,we present a novel and simple method to fabricate a large‑area ordered Au/Ag nanobowl(Au/AgNB)array based on SiO_(2) colloidal crystals by wet chemosynthesis.The arrays combine the advantages of gold and silver and have been well recognized as excellent surface‑enhanced Raman scattering(SERS)substrates in practical application.First of all,a 3D SiO_(2) colloidal crystal was arrayed on the glass substrate as a template.Then,a layer of Au nanoshell(AuNS)was deposited on the 3D SiO_(2) template by in‑situ growth method with the help of Au nanoparticle(AuNP)seeds.Afterward,silver nanoshells were further deposited on the surface of AuNS by HCHO‑reduced Ag^(+),then Ag/Au double nanoshell(Ag/AuNS)array was formed.A monolayer‑ordered reversed Ag/AuNB array was conveniently obtained by an acrylic ester‑modified biaxial‑oriented polypropylene(BOPP).The ordered Au/AgNB array with adjustable periodic holes,shapes,and sizes could be obtained when the SiO_(2) core was etched by HF solution.With prominent stability and reproducibility,the SERS analytical enhancement factor(AEF)of this ordered Au/AgNB array could reach 2.23×10^(7),which shows high SERS‑enhancing activity and can be used as a universal SERS substrate.

关 键 词：金纳米壳 金/银纳米壳 金/银纳米碗 有序阵列 表面增强拉曼散射 

分 类 号：O657.37[理学—分析化学] TB383[理学—化学]