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Journal of Nanoparticle Research
Published in: Journal of Nanoparticle Research 10/2018

01-10-2018 | Research Paper

Facile synthesis of recyclable Co3O4/Co(OH)2/RGO ternary heterostructures with synergistic effect for photocatalysis

Authors: Haiyan Li, Cheng Sun, Yan Zhao, Xingjian Xu, Hongwen Yu

Published in: Journal of Nanoparticle Research | Issue 10/2018

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Abstract

A simple one-pot hydrothermal approach has been provided for the synthesis of a magnetically recyclable Co3O4/Co(OH)2/RGO ternary visible-light photocatalyst. The chemical reduction of graphene oxide (GO) and the formation of Co3O4 and Co(OH)2 nanoparticles occurred simultaneously during the hydrothermal reaction, and an intimate interface is built successfully between Co(OH)2 and Co3O4 nanoparticles at the nanoscale. The formation mechanism of Co3O4/Co(OH)2/RGO is investigated by means of TEM and XRD, indicating that the RGO nanosheets play a vital role in forming the ternary heterostructures. The synergistic effect between Co3O4, Co(OH)2, and RGO leads to decreased aggregation of nanoparticles, more surface active sites, two electron-transfer paths, and excellent charge transfer. As a result, a highly efficient and stable photocatalytic activity is obtained for the 6-wt% Co3O4/Co(OH)2/RGO ternary heterojunction photocatalyst under visible-light illumination (λ > 420 nm). Furthermore, the photocatalyst can be rapidly collected from the suspension using a powerful magnet and recycled with good stability, which is very meaningful in the practical industry and life.
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Metadata
Title
Facile synthesis of recyclable Co3O4/Co(OH)2/RGO ternary heterostructures with synergistic effect for photocatalysis
Authors
Haiyan Li
Cheng Sun
Yan Zhao
Xingjian Xu
Hongwen Yu
Publication date
01-10-2018
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 10/2018
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-018-4359-3

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