Facile Decoration of Polyaniline Fiber with Ag Nanoparticles for Recyclable SERS Substrate
Facile Decoration of Polyaniline Fiber with Ag Nanoparticles for Recyclable SERS Substrate
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DOI：
10.1021/acsami.5b01806
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发表时间：
2015-05-20
影响因子：
9.5
通讯作者：
Malik, Sudip
中科院分区：
文献类型：
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作者：
Mondal, Sanjoy;Rana, Utpal;Malik, Sudip
以高长径比的苯四甲酸掺杂聚苯胺（BDP）纤维为还原剂、模板剂和稳定剂，采用简单的溶液浸渍法成功地合成了聚苯胺@Ag复合材料。在BDP@Ag复合材料中，BDP纤维被球形Ag纳米颗粒（Ag NPs）修饰，并且Ag NPs在BDP纤维上的布居通过改变AgNO 3的摩尔浓度来控制。更重要的是，Ag-NP修饰的BDP纤维（BDP@ Ag复合材料）已经发展成为一种灵敏的材料，用于检测痕量的4-巯基苯甲酸和罗丹明6 G作为表面增强拉曼散射（Sers）的分析物，并且检测限低至纳摩尔浓度，具有优异的可回收性。此外，合成的BDP@Ag复合物同时作为活性Sers基底和上级催化剂用于还原4-硝基苯硫酚。
Facile synthesis of polyaniline@Ag composite has been successfully demonstrated by a simple solution-dipping method using high-aspect-ratio benzene tetracarboxylic acid-doped polyaniline (BDP) fiber as a nontoxic reducing agent as well as template cum stabilizer. In BDP@Ag composite, BDP fibers are decorated with spherical Ag nanoparticles (Ag NPs), and the population of Ag NPs on BDP fibers is controlled by changing the molar concentration of AgNO3. Importantly, Ag-NP-decorated BDP fibers (BDP@ Ag composites) have been evolved as a sensitive materials for the detection of trace amounts of 4-mercaptobenzoic acid and rhodamine 6G as an analyte of surface-enhanced Raman scattering (SERS), and the detection limit is down to nanomolar concentrations with excellent recyclability. Furthermore, synthesized BDP@Ag composites are applied simultaneously as an active SERS substrate and a superior catalyst for reduction of 4-nitrothiophenol.