Cargando…
Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance
In this study, Au–Ag and Pt–Ag bimetallic nanocages were loaded on natural halloysite nanotubes (HNTs) via galvanic exchange based on Ag@HNT. By changing the ratio of Au to Ag or Pt to Ag in exchange processes, Au–Ag@HNT and Pt–Ag@HNT with different nanostructures were generated. Both Au–Ag@HNT and...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078928/ https://www.ncbi.nlm.nih.gov/pubmed/35540453 http://dx.doi.org/10.1039/c8ra00423d |
_version_ | 1784702447398158336 |
---|---|
author | Li, Siyu Tang, Feng Wang, Huixin Feng, Junran Jin, Zhaoxia |
author_facet | Li, Siyu Tang, Feng Wang, Huixin Feng, Junran Jin, Zhaoxia |
author_sort | Li, Siyu |
collection | PubMed |
description | In this study, Au–Ag and Pt–Ag bimetallic nanocages were loaded on natural halloysite nanotubes (HNTs) via galvanic exchange based on Ag@HNT. By changing the ratio of Au to Ag or Pt to Ag in exchange processes, Au–Ag@HNT and Pt–Ag@HNT with different nanostructures were generated. Both Au–Ag@HNT and Pt–Ag@HNT systems showed significantly improved efficiency as peroxidase-like catalysts in the oxidation of o-phenylenediamine compared with monometallic Au@HNT and Pt@HNT, although inert Ag is dominant in the composition of both Au–Ag and Pt–Ag nanocages. On the other hand, loading on HNTs enhanced the thermal stability for every system, whether monometallic Ag nanoparticles, bimetallic Au–Ag or Pt–Ag nanocages. Ag@HNT sustained thermal treatment at 400 °C in nitrogen with improved catalytic performance, while Au–Ag@HNT and Pt–Ag@HNT maintained or even had slightly enhanced catalytic efficiency after thermal treatment at 200 °C in nitrogen. This study demonstrated that natural halloysite nanotubes are a good support for various metallic nanoparticles, improving their catalytic efficiency and thermal stability. |
format | Online Article Text |
id | pubmed-9078928 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90789282022-05-09 Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance Li, Siyu Tang, Feng Wang, Huixin Feng, Junran Jin, Zhaoxia RSC Adv Chemistry In this study, Au–Ag and Pt–Ag bimetallic nanocages were loaded on natural halloysite nanotubes (HNTs) via galvanic exchange based on Ag@HNT. By changing the ratio of Au to Ag or Pt to Ag in exchange processes, Au–Ag@HNT and Pt–Ag@HNT with different nanostructures were generated. Both Au–Ag@HNT and Pt–Ag@HNT systems showed significantly improved efficiency as peroxidase-like catalysts in the oxidation of o-phenylenediamine compared with monometallic Au@HNT and Pt@HNT, although inert Ag is dominant in the composition of both Au–Ag and Pt–Ag nanocages. On the other hand, loading on HNTs enhanced the thermal stability for every system, whether monometallic Ag nanoparticles, bimetallic Au–Ag or Pt–Ag nanocages. Ag@HNT sustained thermal treatment at 400 °C in nitrogen with improved catalytic performance, while Au–Ag@HNT and Pt–Ag@HNT maintained or even had slightly enhanced catalytic efficiency after thermal treatment at 200 °C in nitrogen. This study demonstrated that natural halloysite nanotubes are a good support for various metallic nanoparticles, improving their catalytic efficiency and thermal stability. The Royal Society of Chemistry 2018-03-14 /pmc/articles/PMC9078928/ /pubmed/35540453 http://dx.doi.org/10.1039/c8ra00423d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Li, Siyu Tang, Feng Wang, Huixin Feng, Junran Jin, Zhaoxia Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title | Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title_full | Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title_fullStr | Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title_full_unstemmed | Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title_short | Au–Ag and Pt–Ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
title_sort | au–ag and pt–ag bimetallic nanoparticles@halloysite nanotubes: morphological modulation, improvement of thermal stability and catalytic performance |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078928/ https://www.ncbi.nlm.nih.gov/pubmed/35540453 http://dx.doi.org/10.1039/c8ra00423d |
work_keys_str_mv | AT lisiyu auagandptagbimetallicnanoparticleshalloysitenanotubesmorphologicalmodulationimprovementofthermalstabilityandcatalyticperformance AT tangfeng auagandptagbimetallicnanoparticleshalloysitenanotubesmorphologicalmodulationimprovementofthermalstabilityandcatalyticperformance AT wanghuixin auagandptagbimetallicnanoparticleshalloysitenanotubesmorphologicalmodulationimprovementofthermalstabilityandcatalyticperformance AT fengjunran auagandptagbimetallicnanoparticleshalloysitenanotubesmorphologicalmodulationimprovementofthermalstabilityandcatalyticperformance AT jinzhaoxia auagandptagbimetallicnanoparticleshalloysitenanotubesmorphologicalmodulationimprovementofthermalstabilityandcatalyticperformance |