Accessible Requires Authentication Published by De Gruyter January 29, 2018

Photocatalytic properties of nano-structured carbon nitride: a comparison with bulk graphitic carbon nitride

Xuefei Li, Qianyu Sun, Ming Li, Jinghai Yang, Xi Chen, Yuzhe Yang, Xiuyan Li, Tingjing Hu, Yingrui Sui and Xingtong Wu

Abstract

We have synthesised two kinds of graphitic carbon nitride (g-C3N4) through a pyrolysis process involving urea and melamine. The obtained products were characterised by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, UV–vis diffuse reflection spectroscopy, and nitrogen adsorption–desorption. The product derived from the urea shows a mesoporous honeycomb-like nanosheet structure (denoted by h-g-C3N4): compared with the bulk product obtained from melamine (denoted by b-g-C3N4), the h-g-C3N4 showed better adsorption and higher photo-activity for rhodamine B (RhB) reduction. The h-g-C3N4 also shows good reusability after cyclic adsorption–regeneration. The present results evinced an efficient design, an eco-friendly and convenient photocatalyst, and a tunable photo-reactivity for use in sustainable light-to-energy conversion.


*Correspondence address, Xuefei Li, Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Educations, Jilin Normal University, No. 399 Zhuoyue Road, Changchun 130103, Jilin Province, P.R. China, Tel.: +86 4343290230, E-mail:

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Received: 2017-05-20
Accepted: 2017-08-15
Published Online: 2018-01-29
Published in Print: 2018-02-12

© 2018, Carl Hanser Verlag, München