A β-cyclodextrin Modified Graphitic Carbon Nitride with Au Co-Catalyst for Efficient Photocatalytic Hydrogen Peroxide Production.
Guifu ZuoYuqian ZhangShanshan LiuZhaoliang GuoQiannan ZhaoSaianand GopalanLiwei FengLijuan LiWangze LiNing ZhangXianguang MengVellaisamy A L RoyPublished in: Nanomaterials (Basel, Switzerland) (2020)
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 (β-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.
Keyphrases
- visible light
- hydrogen peroxide
- lymph node metastasis
- nitric oxide
- squamous cell carcinoma
- ionic liquid
- working memory
- radiation therapy
- reduced graphene oxide
- density functional theory
- sensitive detection
- radiation induced
- gold nanoparticles
- quantum dots
- mass spectrometry
- capillary electrophoresis
- carbon dioxide
- energy transfer