Journal
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
Volume 28, Issue 1, Pages 268-278Publisher
SPRINGER
DOI: 10.1007/s10904-017-0715-5
Keywords
SiO2/g-C3N4 nanocomposite; Solvothermal synthesis; Visible-light photocatalyst; Scavenger
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Development of novel and efficient nanostructured materials for the waste water treatment is a great challenge for the researchers. In this regard, we report a novel SiO2/g-C3N4 nanocomposites were tailored via simple solvothermal route and characterized by various spectroscopic and microscopic techniques such as XRD, FT-IR, UV-Vis DRS, SEM, TEM and XPS. The photocatalytic performances of the as-prepared SiO2/g-C3N4 nanocomposites were evaluated for the removal of hazardous rhodamine B (RhB) and crystal violet (CV) organic dyes in aqueous solution under visible light irradiation. Interestingly, the UV-Visible spectroscopy results revealed that the as-synthesized SiO2/g-C3N4 nanocomposite showed superior photocatalytic activity for the degradation of RhB and CV dyes could degrade 99 and 98% under visible-light irradiation respectively. The enhanced photocatalytic activity of SiO2/g-C3N4 nanocomposites could be mainly attributed to the proficient separation of photo-induced charge carriers. A plausible degradation mechanism for the controlled visible-light photocatalytic activity of SiO2/g-C3N4 nanocomposites was strongly evidenced by the trapping experiment by employing different scavengers. The present research findings may open up a new platform for the g-C3N4 based photocatalyst for the degradation of organic pollutants. Proposed degradation mechanism of the SiO2/g-C3N4 photocatalyst. [GRAPHICS] .
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