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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：RSC ADVANCES

收录刊物：SCIE、EI

卷号：6

期号：97

页面范围：94496-94501

ISSN号：2046-2069

摘要：Spherical urchin-like graphitic carbon nitride nanoparticles with high specific surface area were prepared by thermal-induced self-condensation of melamine and a flower-like porous silica template. These urchin-like g-C3N4 were characterized by TEM, N-2 physical adsorption, XRD, FT-IR, XPS, UV-Vis and PL spectra. After complete removal of the silica template, the urchin-like g-C3N4 particles exhibited almost 12.3 times higher activity than the conventional bulk g-C3N4 during photocatalytic degradation of RhB under visible light irradiation. The enhanced photocatalytic activity can be attributed to the increased surface area (SBET = 131.5 m(2) g(-1)) together with the reduced recombination of photogenerated electron-hole pairs, as confirmed by the PL spectra. These urchin-like g-C3N4 nanoparticles demonstrate semiconductor-redox functions that make them candidates for use as catalyst supports, nitrogen-rich templates, and selective organic synthesis photocatalysts.