A new silver nanorod SPR probe for detection of trace benzoyl peroxide.

Zhiliang Jiang,Qingye Liu,Xinghui Zhang,Aihui Liang,Guiqing Wen,Yanghe Luo

doi:10.1038/srep05323

Zhiliang Jiang, Qingye Liu + Show 4 more

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https://doi.org/10.1038/srep05323

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Journal: Scientific reports	Publication Date: Jun 17, 2014
Citations: 54	License type: CC BY 4.0

Affiliation: Guangxi Normal University

Abstract

The stable silver nanorod (AgNR) sol in red was prepared by the two-step procedure of NaBH4-H2O2 and citrate heating reduction. The AgNR had a transverse and a longitudinal surface plasmon resonance (SPR) absorption peak at 338 nm and 480 nm. Meanwhile, two transverse and longitudinal SPR Rayleigh scattering (SPR-RS) peaks at 340 nm and 500 nm were observed firstly using common fluorescence spectrometer. The SPR absorption, RS, surface enhanced Raman scattering (SERS) and electron microscope technology were used to study the formation mechanism of red silver nanorods and the SERS enhancement mechanism of nano-aggregation. The AgNR-BPO SPR absorption and AgNR-NaCl-BPO SPR-RS analytical systems were studied to develop two new simple, rapid, and low-cost SPR methods for the detection of trace BPO.

Highlights

Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Normal University, Guilin 541004, China
On the other hand the generated Ag1 on the surface of AgNR combined with Cl2 to form strongly hydrophobic AgCl particles with high electron density which made Ag atom was easier to be oxidized, and small AgNP generated with weak surface plasmon resonance (SPR) absorption
The results show that the blue triangle silvernanoplate can be prepared by H2O2 and NaBH4 reduction of AgNO3 at room temperature, using 0.6–4.8 mmol/L sodium citrate without PVP (Figure 9Sa, 9Sc)

Summary

Introduction

Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry Education, Guangxi Normal University, Guilin 541004, China. The SPR absorption, RS, surface enhanced Raman scattering (SERS) and electron microscope technology were used to study the formation mechanism of red silver nanorods and the SERS enhancement mechanism of nano-aggregation. To explore a simple, rapid, and environmentally friendly method for synthesis of stable silver or gold nanorods has very significance. There have no reports about the preparation of red silver nanorods using the blue triangle nanosilver sol as precursor by heating and its plasmon resonance spectrometry for detection of BPO yet. The stable AgNR sol was prepared the AgNR-BPO-NaCl www.nature.com/scientificreports system has been studied in details by SPR absorption, RRS, SERS, electron microscopy and other technology, and two simple, rapid and sensitive methods have been developed for detection of BPO

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Conclusion