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Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis

Plasmonic nanostructures with sharp tips are widely used for optical signal enhancement because of their strong light-confining abilities. These structures have a wide range of potential applications, for example, in sensing, bioimaging, and surface-enhanced Raman scattering. Au nanoparticles, which...

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Autores principales: Mi, Xiaohu, Zhang, Tingting, Zhang, Baobao, Ji, Min, Kang, Bowen, Kang, Chao, Fu, Zhengkun, Zhang, Zhenglong, Zheng, Hairong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8294035/
https://www.ncbi.nlm.nih.gov/pubmed/34307300
http://dx.doi.org/10.3389/fchem.2021.699548
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author Mi, Xiaohu
Zhang, Tingting
Zhang, Baobao
Ji, Min
Kang, Bowen
Kang, Chao
Fu, Zhengkun
Zhang, Zhenglong
Zheng, Hairong
author_facet Mi, Xiaohu
Zhang, Tingting
Zhang, Baobao
Ji, Min
Kang, Bowen
Kang, Chao
Fu, Zhengkun
Zhang, Zhenglong
Zheng, Hairong
author_sort Mi, Xiaohu
collection PubMed
description Plasmonic nanostructures with sharp tips are widely used for optical signal enhancement because of their strong light-confining abilities. These structures have a wide range of potential applications, for example, in sensing, bioimaging, and surface-enhanced Raman scattering. Au nanoparticles, which are important plasmonic materials with high photothermal conversion efficiencies in the visible to near-infrared region, have contributed greatly to the development of photothermal catalysis. However, the existing methods for synthesizing nanostructures with tips need the assistance of poly(vinylpyrrolidone), thiols, or biomolecules. This greatly hinders signal detection because of stubborn residues. Here, we propose an efficient binary surfactant–mediated method for controlling nanotip growth on Au nanoparticle surfaces. This avoids the effects of surfactants and can be used with other Au nanostructures. The Au architecture tip growth process can be controlled well by adjusting the ratio of hexadecyltrimethylammonium bromide to hexadecyltrimethylammonium chloride. This is due to the different levels of attraction between Br(−)/Cl(−) and Au(3+) ions. The surface-enhanced Raman scattering and catalytic abilities of the synthesized nanoparticles with tips were evaluated by electromagnetic simulation and photothermal catalysis experiments (with 4-nitrothiophenol). The results show good potential for use in surface-enhanced Raman scattering applications. This method provides a new strategy for designing plasmonic photothermal nanostructures for chemical and biological applications.
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spelling pubmed-82940352021-07-22 Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis Mi, Xiaohu Zhang, Tingting Zhang, Baobao Ji, Min Kang, Bowen Kang, Chao Fu, Zhengkun Zhang, Zhenglong Zheng, Hairong Front Chem Chemistry Plasmonic nanostructures with sharp tips are widely used for optical signal enhancement because of their strong light-confining abilities. These structures have a wide range of potential applications, for example, in sensing, bioimaging, and surface-enhanced Raman scattering. Au nanoparticles, which are important plasmonic materials with high photothermal conversion efficiencies in the visible to near-infrared region, have contributed greatly to the development of photothermal catalysis. However, the existing methods for synthesizing nanostructures with tips need the assistance of poly(vinylpyrrolidone), thiols, or biomolecules. This greatly hinders signal detection because of stubborn residues. Here, we propose an efficient binary surfactant–mediated method for controlling nanotip growth on Au nanoparticle surfaces. This avoids the effects of surfactants and can be used with other Au nanostructures. The Au architecture tip growth process can be controlled well by adjusting the ratio of hexadecyltrimethylammonium bromide to hexadecyltrimethylammonium chloride. This is due to the different levels of attraction between Br(−)/Cl(−) and Au(3+) ions. The surface-enhanced Raman scattering and catalytic abilities of the synthesized nanoparticles with tips were evaluated by electromagnetic simulation and photothermal catalysis experiments (with 4-nitrothiophenol). The results show good potential for use in surface-enhanced Raman scattering applications. This method provides a new strategy for designing plasmonic photothermal nanostructures for chemical and biological applications. Frontiers Media S.A. 2021-07-07 /pmc/articles/PMC8294035/ /pubmed/34307300 http://dx.doi.org/10.3389/fchem.2021.699548 Text en Copyright © 2021 Mi, Zhang, Zhang, Ji, Kang, Kang, Fu, Zhang and Zheng. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Mi, Xiaohu
Zhang, Tingting
Zhang, Baobao
Ji, Min
Kang, Bowen
Kang, Chao
Fu, Zhengkun
Zhang, Zhenglong
Zheng, Hairong
Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title_full Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title_fullStr Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title_full_unstemmed Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title_short Binary Surfactant–Mediated Tunable Nanotip Growth on Gold Nanoparticles and Applications in Photothermal Catalysis
title_sort binary surfactant–mediated tunable nanotip growth on gold nanoparticles and applications in photothermal catalysis
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8294035/
https://www.ncbi.nlm.nih.gov/pubmed/34307300
http://dx.doi.org/10.3389/fchem.2021.699548
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