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Simulation-guided Synthesis of Graphitic Carbon Nitride Beads with 3D Interconnected and Continuous Meso/macropore Channels for Enhanced Light Absorption and Photo-catalytic Performance

Abstract

An optical simulation is adopted to examine the effects of the pore channels with different sizes and architectures on the ability of light absorption in photo-catalysts. The simulation results are utilized to guide the synthesis of a novel porous graphitic carbon nitride (g-C3N4) material in bead form, using millimeter-scale porous SiO2 beads as template. The obtained g-C3N4 beads possess a unique porous architecture with 3D interconnected and continuous meso/macropore channels at 30–90 nm in size, which is identical to the simulation result. Compared with the pristine g-C3N4, the prepared material exhibits significantly enhanced visible light-induced catalytic performances for H2 evolution (8 times), photo-redution of nitrobenzne (3 times) and degradations of rhodamine B (4 times), methyl orange (2 times) and phenol (3 times). The unique pores and skeleton structures not only promote light penetration inside the material and light absorption at the edge of pore channels, but also improve the mass transfer and inhibit the recombination of the photo-generated electrons and holes. Moreover, this optical simulation approach could be adopted to guide the synthesis of other porous photo-catalysts, and to verify their light absorption and infiltration properties in photo-catalysis.

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Supplementary files

Publication details

The article was received on 28 Jul 2017, accepted on 12 Sep 2017 and first published on 13 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA06626K
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Simulation-guided Synthesis of Graphitic Carbon Nitride Beads with 3D Interconnected and Continuous Meso/macropore Channels for Enhanced Light Absorption and Photo-catalytic Performance

    Y. Li, Y. Jiang, Z. Ruan, K. Lin, Z. Yu, Z. Zheng, X. Xu and Y. Yuan, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA06626K

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