Issue 56, 2020
From the journal:

RSC Advances

A redox-active support for the synthesis of Au@SnO2 core–shell nanostructure and SnO2 quantum dots with efficient photoactivities†

Xiaoyang Pan, ORCID logo *a   Wen-Jie Chen,a   Huizhen Cai,a   Hui Li,a   Xue jiao Sun,a   Bo Weng ORCID logo *b  and  Zhiguo Yi ORCID logo *c  

* Corresponding authors

a College of Chemistry and Materials, Quanzhou Normal University, Quanzhou, China
E-mail: xypan@qztc.edu.cn

b cMACS, Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
E-mail: bo.weng@kuleuven.be

c State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
E-mail: zhiguo@mail.sic.ac.cn

Abstract

A defect pyrochlore-type Sn1.06Nb2O5.59F0.97 (SnNbOF) nano-octahedron is used as a redox-active support for fabricating Au@SnO2 core–shell and SnO2 quantum dots at room temperature without the use of organic species or foreign reducing reagents. Gold (Au) and SnO2 components were obtained through an in situ redox reaction between the HAuCl4 and reductive Sn2+ ions incorporated in SnNbOF. The composition and morphology of the resulting nanocomposites (denoted as Au–SnNbOF) could be controlled by adjusting the Au/SnNbOF ratio. The Au–SnNbOF nanocomposites exhibited efficient photoactivities for methyl orange (MO) degradation under the visible light irradiation (λ > 420 nm), during which the MO was almost completely degraded within 8 min. Among all the samples, the 5wt% Au–SnNbOF nanocomposite had the highest rate constant (0.43 min−1), which was 40 times higher than that of the blank SnNbOF.

Graphical abstract: A redox-active support for the synthesis of Au@SnO2 core–shell nanostructure and SnO2 quantum dots with efficient photoactivities

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/D0RA06175A
Article type
Paper
Submitted
15 Jul 2020
Accepted
28 Aug 2020
First published
14 Sep 2020
This article is Open Access
Creative Commons BY license

RSC Adv., 2020,10, 33955-33961

Permissions

Request permissions

A redox-active support for the synthesis of Au@SnO2 core–shell nanostructure and SnO2 quantum dots with efficient photoactivities

X. Pan, W. Chen, H. Cai, H. Li, X. J. Sun, B. Weng and Z. Yi, RSC Adv., 2020, 10, 33955 DOI: 10.1039/D0RA06175A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements