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Journal of Nanoparticle Research

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01.01.2020 | Research Paper

2D g-C₃N₄/BiOBr heterojunctions with enhanced visible light photocatalytic activity

verfasst von: Man Zhou, Wenmao Huang, Yaping Zhao, Zhihang Jin, Xin Hua, Kai Li, Liping Tang, Zaisheng Cai

Erschienen in: Journal of Nanoparticle Research | Ausgabe 1/2020

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Abstract

The two-dimensional (2D) layered photocatalysts are promising to improve the separation efficiency of photogenerated electron-hole pairs. Herein, 2D graphitic carbon nitride (g-C₃N₄)/BiOBr heterojunctions were successfully prepared via a facile solvothermal method. The micromorphology, structure, and chemical composition/states were characterized. The visible light–induced photocatalytic properties were estimated by the degradation of rhodamine B (RhB), photocurrent responses, Nyquist spectra, and Mott-Schottky measurement. Comparing with pure g-C₃N₄ and BiOBr, 2D g-C₃N₄/BiOBr heterojunctions exhibit the enhanced visible light photodegradation. After coupling between (001) crystal planes of BiOBr with (002) planes of g-C₃N₄, 2D g-C₃N₄/BiOBr heterojunctions have the large and intimate contact surface allowing fast interfacial charge transfer rate. It is explored that photoinduced superoxide radicals (·O₂⁻) and holes (h⁺) actively participate in the photodegradation, while the contribution of hydroxyl (·OH) radicals is negligible.

Vorheriger Artikel Facile preparation of polyaniline-carbon nanotube hybrid electrodes and dependence of their supercapacitive properties on degree of carboxylation of carbon nanotubes

Nächster Artikel Nitrogen dozen carbon quantum dots as one dual function sensing platform for electrochemical and fluorescent detecting ascorbic acid

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Titel: 2D g-C3N4/BiOBr heterojunctions with enhanced visible light photocatalytic activity
verfasst von: Man Zhou
Wenmao Huang
Yaping Zhao
Zhihang Jin
Xin Hua
Kai Li
Liping Tang
Zaisheng Cai
Publikationsdatum: 01.01.2020
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 1/2020
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-019-4739-3

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