Photocatalytic Activity of Mesoporous Graphitic Carbon Nitride (mpg-C3N4) Towards Organic Chromophores Under UV and VIS Light Illumination


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Erdogan D., SEVİM M., Kisa E., Emiroglu D. B., Karatok M., Vovk E. I., ...More

TOPICS IN CATALYSIS, vol.59, pp.1305-1318, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 59
  • Publication Date: 2016
  • Doi Number: 10.1007/s11244-016-0654-3
  • Journal Name: TOPICS IN CATALYSIS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1305-1318
  • Keywords: Graphitic-C3N4, Carbon nitride, UV-Vis light, Photocatalytic degradation, Organic dyes, SOLID-STATE NMR, VISIBLE-LIGHT, OPTICAL-PROPERTIES, POROUS G-C3N4, SURFACE-AREA, RHODAMINE-B, PERFORMANCE, EVOLUTION, MELAMINE, PHOTODEGRADATION
  • Middle East Technical University Affiliated: No

Abstract

A template-assisted synthetic method including the thermal polycondensation of guanidine hydrochloride (GndCl) was utilized to synthesize highly-organized mesoporous graphitic carbon nitride (mpg-C3N4) photocatalysts. Comprehensive structural analysis of the mpg-C3N4 materials were performed by XPS, XRD, FT-IR, BET and solid-state NMR spectroscopy. Photocatalytic performance of the mpg-C3N4 materials was studied for the photodegradation of several dyes under visible and UV light illumination as a function of catalyst loading and the structure of mpg-C3N4 depending on the polycondensation temperature. Among all of the formerly reported performances in the literature (including the ones for Degussa P25 commercial benchmark), currently synthesized mpg-C3N4 photocatalysts exhibit a significantly superior visible light-induced photocatalytic activity towards rhodamine B (RhB) dye. Enhanced catalytic efficiency could be mainly attributed to the terminated polycondensation process, high specific surface area, and mesoporous structure with a wide pore size distribution.