硅酸盐学报2021，Vol.49Issue(2)：220-228,9.DOI:10.14062/j.issn.0454-5648.20200476
负载银纳米立方体的醋酸纤维素纳米纤维及其SERS活性
Surface-enhanced Raman Scattering from Electrospun Cellulose Acetate Nanofibers Loaded with Aggregated Ag-nanocubes
摘要
Abstract
Cellulose acetate (CA) nanofibers were embedded with aggregated silver-nanocubes (AgNCs) by a coaxial electrospinning method. AgNCs were dispersed with CA and acetone-dimethylacetamide (DMAc) as a precursor solution, and AgNCs aggregation was induced with acetone. The nanofibers have a remarkable surface-enhanced Raman scattering (SERS) activity due to the strong plasmon coupling between neighboring AgNCs, which is 4 times of the monomeric-AgNC/CA sample. As a result, 0.1 nmol/L p-aminothiophenol (p-ATP) and 10 nmol/L methyl parathion can be identified, respectively. The nanofibers generate large-area homogeneous SERS signals with a relative signal deviation of less than 12％ over 1 mm×1 mm area due to the homogeneous adsorption of target molecules. It is thus indicated that aggregated-AgNCs/CA nanofibers have a promising potential in SERS-based detection of organic pollutants in aqueous solutions.关键词
表面增强拉曼散射/银纳米方块/纳米纤维/静电纺丝Key words
surface-enhanced Raman scattering/Ag-nanocube/nanofiber/electrospinning引用本文复制引用
柯岩,陈斌,周宁宁,黄竹林,孟国文..负载银纳米立方体的醋酸纤维素纳米纤维及其SERS活性[J].硅酸盐学报,2021,49(2):220-228,9.基金项目
国家自然科学基金(51632009,91963202,21673245) （51632009,91963202,21673245）
中科院前沿科学重点研究计划(QYZDJ-SSW-SLH046) （QYZDJ-SSW-SLH046）
中科院青年创新促进会 （）
安徽省自然科学基金(1908085QE173). （1908085QE173）
