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Journal of Sol-Gel Science and Technology
Published in: Journal of Sol-Gel Science and Technology 3/2021

12-08-2021 | Original Paper: sol–gel and hybrid materials for catalytic, photoelectrochemical and sensor applications

Promising pure gold aerogel: in situ preparation by composite sol–gel and application in catalytic removal of pollutants and SERS

Authors: Yuwei Xiao, Chaoyang Wang, Kui Liu, Lingyu Wei, Zhihui Luo, Min Zeng, Yong Yi

Published in: Journal of Sol-Gel Science and Technology | Issue 3/2021

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Abstract

In this work, a new preparation method of highly pure gold aerogel using cellulose triacetate as a template was developed. Gold aerogel with high-purity, low density, and elevated specific surface area was successfully prepared by the proposed fast and simple method as a typical example of noble metal aerogels. In this process, the ligament, crystal grain size, and specific surface area of the product could be controlled by adjusting the concentration of the reducing agent. After complete removal of the template, the obtained gold aerogel with 99% purity showed a moderate catalytic effect toward organic pollutants but with great modification potential. The Raman intensity of pure gold aerogel was 3.2-fold higher than that of the conventional porous gold substrate. The excellent effect of the as-prepared nanogold aerogel was attributed to its enhanced surface plasmon resonance effect induced from high purity. In sum, these findings look promising for future application of high-purity gold aerogels in many fields.
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Appendix
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Metadata
Title
Promising pure gold aerogel: in situ preparation by composite sol–gel and application in catalytic removal of pollutants and SERS
Authors
Yuwei Xiao
Chaoyang Wang
Kui Liu
Lingyu Wei
Zhihui Luo
Min Zeng
Yong Yi
Publication date
12-08-2021
Publisher
Springer US
Published in
Journal of Sol-Gel Science and Technology / Issue 3/2021
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-021-05597-9

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