Staff View: Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability

Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability

An electrochemical approach has been used for green synthesis of gold and silver nanoparticles (e-AuNPs and e-AgNPs) with high levels of purity and scalability. The electrochemically synthesized noble-metal nanoparticles were characterized by ultraviolet–visible (UV–Vis) spectroscopy and scanning el...

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Main Authors:	Mai Quan Doan, Nguyen Ha Anh, Nguyen Xuan Quang, Ngo Xuan Dinh, Doan Quang Tri, Tran Quang Huy, Anh-Tuan Le
Format:	Bài trích
Language:	English
Published:	Journal of Electronic Materials 2021
Subjects:	Electrochemically synthesized AuNPs SERS
Online Access:	https://link.springer.com/article/10.1007%2Fs11664-021-09228-5#article-info https://dlib.phenikaa-uni.edu.vn/handle/PNK/3316 https://doi.org/10.1007/s11664-021-09228-5
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spelling	oai:localhost:PNK-33162022-08-17T05:54:47Z Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability Mai Quan Doan Nguyen Ha Anh Nguyen Xuan Quang Ngo Xuan Dinh Doan Quang Tri Tran Quang Huy Anh-Tuan Le Electrochemically synthesized AuNPs SERS An electrochemical approach has been used for green synthesis of gold and silver nanoparticles (e-AuNPs and e-AgNPs) with high levels of purity and scalability. The electrochemically synthesized noble-metal nanoparticles were characterized by ultraviolet–visible (UV–Vis) spectroscopy and scanning electron microscopy (SEM), confirming the formation of spherical e-AuNPs and e-AgNPs with average size of 19 nm and 24 nm, respectively. These green nanoparticles were deposited on aluminum substrates using the drop-drying method for surface-enhanced Raman scattering (SERS)-based detection of Methylene Blue (MB) within the ranges from 10−5 M to 10−8 M and 10−7 M to 10−10 M, respectively. The SERS sensors also exhibited outstanding sensing performance for MB detection with limits of detection (LOD) of 9 × 10−11 M for e-AuNPs and 5 × 10−12 M for e-AgNPs. The enhancement factors (EFs) of the two noble-metal NPs were estimated to be 4.4 × 107 for e-AuNPs and 1.98 × 109 for e-AgNPs at an MB concentration of 10−8 M. We then clarified the roles of the purity and composition of these nanoparticles (NPs) on their SERS sensing performance by comparing our sensors with several reported sensing systems, as well as comparing our two kinds of NPs, in terms of sensitivity, stability, and reproducibility. We also propose a possible mechanism for the enhancement of the SERS signal observed for our two electrochemically synthesized Nps. 2021-10-27T02:05:07Z 2021-10-27T02:05:07Z 2021 Bài trích https://link.springer.com/article/10.1007%2Fs11664-021-09228-5#article-info https://dlib.phenikaa-uni.edu.vn/handle/PNK/3316 https://doi.org/10.1007/s11664-021-09228-5 en Journal of Electronic Materials
institution	Digital Phenikaa
collection	Digital Phenikaa
language	English
topic	Electrochemically synthesized AuNPs SERS
spellingShingle	Electrochemically synthesized AuNPs SERS Mai Quan Doan Nguyen Ha Anh Nguyen Xuan Quang Ngo Xuan Dinh Doan Quang Tri Tran Quang Huy Anh-Tuan Le Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
description	An electrochemical approach has been used for green synthesis of gold and silver nanoparticles (e-AuNPs and e-AgNPs) with high levels of purity and scalability. The electrochemically synthesized noble-metal nanoparticles were characterized by ultraviolet–visible (UV–Vis) spectroscopy and scanning electron microscopy (SEM), confirming the formation of spherical e-AuNPs and e-AgNPs with average size of 19 nm and 24 nm, respectively. These green nanoparticles were deposited on aluminum substrates using the drop-drying method for surface-enhanced Raman scattering (SERS)-based detection of Methylene Blue (MB) within the ranges from 10−5 M to 10−8 M and 10−7 M to 10−10 M, respectively. The SERS sensors also exhibited outstanding sensing performance for MB detection with limits of detection (LOD) of 9 × 10−11 M for e-AuNPs and 5 × 10−12 M for e-AgNPs. The enhancement factors (EFs) of the two noble-metal NPs were estimated to be 4.4 × 107 for e-AuNPs and 1.98 × 109 for e-AgNPs at an MB concentration of 10−8 M. We then clarified the roles of the purity and composition of these nanoparticles (NPs) on their SERS sensing performance by comparing our sensors with several reported sensing systems, as well as comparing our two kinds of NPs, in terms of sensitivity, stability, and reproducibility. We also propose a possible mechanism for the enhancement of the SERS signal observed for our two electrochemically synthesized Nps.
format	Bài trích
author	Mai Quan Doan Nguyen Ha Anh Nguyen Xuan Quang Ngo Xuan Dinh Doan Quang Tri Tran Quang Huy Anh-Tuan Le
author_facet	Mai Quan Doan Nguyen Ha Anh Nguyen Xuan Quang Ngo Xuan Dinh Doan Quang Tri Tran Quang Huy Anh-Tuan Le
author_sort	Mai Quan Doan
title	Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
title_short	Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
title_full	Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
title_fullStr	Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
title_full_unstemmed	Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability
title_sort	ultrasensitive detection of methylene blue using an electrochemically synthesized sers sensor based on gold and silver nanoparticles: roles of composition and purity on sensing performance and reliability
publisher	Journal of Electronic Materials
publishDate	2021
url	https://link.springer.com/article/10.1007%2Fs11664-021-09228-5#article-info https://dlib.phenikaa-uni.edu.vn/handle/PNK/3316 https://doi.org/10.1007/s11664-021-09228-5
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score	8.891053

Ultrasensitive Detection of Methylene Blue Using an Electrochemically Synthesized SERS Sensor Based on Gold and Silver Nanoparticles: Roles of Composition and Purity on Sensing Performance and Reliability

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