Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light
Abstract Ternary noble metal–semiconductor nanocomposites (NCs) with core–shell–satellite nanostructures have received widespread attention due to their outstanding performance in detecting pollutants through surface-enhanced Raman scattering (SERS) and photodegradation of organic pollutants. In thi...
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doaj-754d5e49d60649e08986f877813fcc0a2021-03-21T12:17:37ZengNature Publishing GroupMicrosystems & Nanoengineering2055-74342021-03-017111010.1038/s41378-021-00250-5Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible lightTong Wu0Hui Zheng1Yichuan Kou2Xinyue Su3Naveen Reddy Kadasala4Ming Gao5Lei Chen6Donglai Han7Yang Liu8Jinghai Yang9College of Physics, Jilin Normal UniversityCollege of Physics, Jilin Normal UniversityCollege of Physics, Jilin Normal UniversityCollege of Physics, Jilin Normal UniversityDepartment of Chemistry, Towson UniversityCollege of Physics, Jilin Normal UniversityCollege of Physics, Jilin Normal UniversitySchool of Materials Science and Engineering, Changchun University of Science and TechnologyCollege of Physics, Jilin Normal UniversityCollege of Physics, Jilin Normal UniversityAbstract Ternary noble metal–semiconductor nanocomposites (NCs) with core–shell–satellite nanostructures have received widespread attention due to their outstanding performance in detecting pollutants through surface-enhanced Raman scattering (SERS) and photodegradation of organic pollutants. In this work, ternary Au@Cu2O–Ag NCs were designed and prepared by a galvanic replacement method. The effect of different amounts of Ag nanocrystals adsorbed on the surfaces of Au@Cu2O on the SERS activity was investigated based on the SERS detection of 4-mercaptobenzoic acid (4-MBA) reporter molecules. Based on electromagnetic field simulations and photoluminescence (PL) results, a possible SERS enhancement mechanism was proposed and discussed. Moreover, Au@Cu2O–Ag NCs served as SERS substrates, and highly sensitive SERS detection of malachite green (MG) with a detection limit as low as 10−9 M was achieved. In addition, Au@Cu2O–Ag NCs were recycled due to their superior self-cleaning ability and could catalyze the degradation of MG driven by visible light. This work demonstrates a wide range of possibilities for the integration of recyclable SERS detection and photodegradation of organic dyes and promotes the development of green testing techniques.https://doi.org/10.1038/s41378-021-00250-5 |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tong Wu Hui Zheng Yichuan Kou Xinyue Su Naveen Reddy Kadasala Ming Gao Lei Chen Donglai Han Yang Liu Jinghai Yang |
spellingShingle |
Tong Wu Hui Zheng Yichuan Kou Xinyue Su Naveen Reddy Kadasala Ming Gao Lei Chen Donglai Han Yang Liu Jinghai Yang Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light Microsystems & Nanoengineering |
author_facet |
Tong Wu Hui Zheng Yichuan Kou Xinyue Su Naveen Reddy Kadasala Ming Gao Lei Chen Donglai Han Yang Liu Jinghai Yang |
author_sort |
Tong Wu |
title |
Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light |
title_short |
Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light |
title_full |
Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light |
title_fullStr |
Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light |
title_full_unstemmed |
Self-sustainable and recyclable ternary Au@Cu2O–Ag nanocomposites: application in ultrasensitive SERS detection and highly efficient photocatalysis of organic dyes under visible light |
title_sort |
self-sustainable and recyclable ternary au@cu2o–ag nanocomposites: application in ultrasensitive sers detection and highly efficient photocatalysis of organic dyes under visible light |
publisher |
Nature Publishing Group |
series |
Microsystems & Nanoengineering |
issn |
2055-7434 |
publishDate |
2021-03-01 |
description |
Abstract Ternary noble metal–semiconductor nanocomposites (NCs) with core–shell–satellite nanostructures have received widespread attention due to their outstanding performance in detecting pollutants through surface-enhanced Raman scattering (SERS) and photodegradation of organic pollutants. In this work, ternary Au@Cu2O–Ag NCs were designed and prepared by a galvanic replacement method. The effect of different amounts of Ag nanocrystals adsorbed on the surfaces of Au@Cu2O on the SERS activity was investigated based on the SERS detection of 4-mercaptobenzoic acid (4-MBA) reporter molecules. Based on electromagnetic field simulations and photoluminescence (PL) results, a possible SERS enhancement mechanism was proposed and discussed. Moreover, Au@Cu2O–Ag NCs served as SERS substrates, and highly sensitive SERS detection of malachite green (MG) with a detection limit as low as 10−9 M was achieved. In addition, Au@Cu2O–Ag NCs were recycled due to their superior self-cleaning ability and could catalyze the degradation of MG driven by visible light. This work demonstrates a wide range of possibilities for the integration of recyclable SERS detection and photodegradation of organic dyes and promotes the development of green testing techniques. |
url |
https://doi.org/10.1038/s41378-021-00250-5 |
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