NDLI: Remarkably enhanced photocatalytic activity of ordered mesoporous $carbon/g-C_{3}N_{4}$ composite photocatalysts under visible light

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Remarkably enhanced photocatalytic activity of ordered mesoporous $carbon/g-C_{3}N_{4}$ composite photocatalysts under visible light

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Remarkably enhanced photocatalytic activity of ordered mesoporous $carbon/g-C_{3}N_{4}$ composite photocatalysts under visible light

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Fangxiao Shi, Lei Ma, Jun Sun, Jianmin Liang, Lin
Description	Author Affiliation: Shi L ( The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology, Harbin 150080, China. sunjm@hit.edu.cn.)
Abstract	Ordered mesoporous $carbon/g-C_{3}N_{4}$ $(OMC/g-C_{3}N_{4})$ composites with efficient photocatalytic activity under visible light irradiation were prepared by a facile heating method. The as-prepared $OMC/g-C_{3}N_{4}$ composites were thoroughly characterized by X-ray diffraction, Fourier transform infrared spectroscopy, elemental analyses, transmission electron microscopy with energy dispersion X-ray spectroscopy, $N_{2}$ adsorption–desorption analysis, UV-vis diffuse reflectance spectroscopy and photoluminescence spectroscopy. The photocatalytic activities were evaluated by degrading Rhodamine B dye, and $OMC/g-C_{3}N_{4}$ composites exhibited much higher photocatalytic activities than pristine $g-C_{3}N_{4}.$ Moreover, the catalysts retained good stability and the photodegradation efficiency hardly changed after five cycles. The degradation rate of the $OMC/g-C_{3}N_{4}$ photocatalyst was almost 10 times as high as that of the pristine $g-C_{3}N_{4},$ which indicated that OMC played an important role in the remarkable improvement of photocatalytic activity. The significant enhancement in photodegradation activity over the $OMC/g-C_{3}N_{4}$ catalyst could be ascribed to the combined effects coming from the enhanced visible light adsorption, enriched adsorption of the dye on the catalyst and subsequent efficient separation of photogenerated electrons and holes. In addition, a possible mechanism for the photodegradation process was proposed on the basis of active species scavenging experiments.
ISSN	14779226
Issue Number	19
Journal	Dalton Trans.
Volume Number	43
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2014-05-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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