Facile fabrication of hollow carbon nitride microspheres with mesoporous structures: When ethanol meets cyanamide_中国颗粒学会

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Partic. vol. 53 pp. 186-191 (December 2020)
doi: 10.1016/j.partic.2020.02.007

Facile fabrication of hollow carbon nitride microspheres with mesoporous structures: When ethanol meets cyanamide

Jian Li1,*, Lin Han1, Xinxin Ye, Min Zhang, Yueyue Hu, Tao Jiang*

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lijian@tust.edu.cn

Highlights

    • Hollow mesoporous carbon nitride microspheres (HMCNMs) were prepared. • HMCNM synthesis used an EtOH/melting cyanamide precursor solution. • The HMCNMs have a higher surface area than graphitic carbon nitride (g-C3N4). • The surface area is easily controlled by varying the EtOH content of the precursor. • The HMCNMs have much higher visible light photocatalytic activity than bulk g-C3N4.

Abstract

A facile method for preparing hollow mesoporous carbon nitride microspheres (HMCNMs) has been developed. A cyanamide/ethanol solution was used as a precursor, with ethanol acting as both a solvent and a porogen, to prepare HMCNMs with a high surface area of 112 m2/g. It was demonstrated that the HMCNM microstructure and surface morphology can be controlled by adjusting the proportion of ethanol in the precursor solution. The resulting HMCNMs exhibited much higher visible light photocatalytic degradative activity toward methylene blue than bulk graphitic carbon nitride.

Keywords

Hollow microspheres; Carbon nitride; Mesoporous; Template