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Sulfur/g-C3N4 Composites with Enhanced Visible Light Photocatalytic Activity

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Composite photocatalysts consisting of different ratios of sulfur and graphitic carbon nitride (S/g-C3N4) were prepared by chemical reduction. The resulted S/g-C3N4 composite photocatalysts were characterized and their photocatalytic activity was evaluated using rhodamine B as a probe. The S/g-C3N4 exhibits obviously enhanced photocatalytic activity under visible light irradiation, which is much higher than that of pure sulfur and g-C3N4. The S/g-C3N4 composite was very stable during the reaction and can be used repeatedly. The synergistic effect between sulfur and g-C3N4 was found to be responsible for the improvement of the separation of photogenerated electrons and holes. The holes (h +) and superoxide (O 2) were the main active species in the photocatalytic degradation of rhodamine B. The study provides new insight to develop high performance composite photocatalysts without any metal oxide or metal sulfide for environmental remediation.
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Document Type: Research Article

Publication date: December 1, 2014

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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