- Title
- A β-cyclodextrin modified graphitic carbon nitride with au co-catalyst for efficient photocatalytic hydrogen peroxide production
- Creator
- Zuo, Guifu; Zhang, Yuqian; Meng, Xianguang; Roy, Vellaisamy A. L.; Liu, Shanshan; Guo, Zhaoliang; Zhao, Qiannan; Saianand, Gopalan; Feng, Liwei; Li, Lijuan; Li, Wangze; Zhang, Ning
- Relation
- Nanomaterials Vol. 10, Issue 10, no. 1969
- Publisher Link
- http://dx.doi.org/10.3390/nano10101969
- Publisher
- MDPI AG
- Resource Type
- journal article
- Date
- 2020
- Description
- Photocatalytic hydrogen peroxide (H2O2) production has attracted considerable attention as a renewable and environment-friendly method to replace other traditional production techniques. The performance of H2O2 production remains limited by the inertness of graphitic carbon nitride (CN) towards the adsorption and activation of O2. In this work, a photocatalyst comprising of β-cyclodextrin (ß-CD)-modified CN with supporting Au co-catalyst (Au/β-CD-CN) has been utilized for effective H2O2 production under visible light irradiation. The static contact angle measurement suggested that β-CD modification increased the hydrophobicity of the CN photocatalyst as well as its affinity to oxygen gas, leading to an increase in H2O2 production. The rate of H2O2 production reached more than 0.1 mM/h under visible-light irradiation. The electron spin resonance spectra indicated that H2O2 was directly formed via a 2-electron oxygen reduction reaction (ORR) over the Au/β-CD-CN photocatalyst.
- Subject
- photocatalysis; oxygen reduction reaction; hydrogen peroxide; graphitic carbon nitride; β-cyclodextrin
- Identifier
- http://hdl.handle.net/1959.13/1426195
- Identifier
- uon:38378
- Identifier
- ISSN:2079-4991
- Rights
- © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
- Language
- eng
- Full Text
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