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A facile pyrolysis method for g – C3N4 synthesizing: photocatalytic degradation of methylene blue under visible light

YALI MENG1, GANG XIN1,* , DAN CHEN1

Affiliation

  1. Dalian University of Technology, School of Chemical Engineering, Dalian 116023, China

Abstract

The bulk g – C3N4 had been synthesized by a facile chemical pyrolysis method, which is based on the self–condensation of cyanamide, dicyandiamide, and melamine to generate g – C3N4. These materials were also characterized by XRD, UV – vis spectra and FT – IR, and elemental analysis. Photocatalytic activity of g – C3N4 was evaluated by the photodegradation of methylene blue (MB). The experiments compared the photocatalytic activity of g – C3N4, which was synthesized from the varying precursors at 520 º C. The results indicated that the g – C3N4 obtained from dicyandiamide exhibited high photodegradation activity. Based on our comparison experiments, a possible mechanism for g – C3N4 photocatalysis system was proposed..

Keywords

Carbon materials, Semiconductors Photocatalysis.

Citation

YALI MENG, GANG XIN, DAN CHEN, A facile pyrolysis method for g – C3N4 synthesizing: photocatalytic degradation of methylene blue under visible light, Optoelectronics and Advanced Materials - Rapid Communications, 5, 6, June 2011, pp.648-650 (2011).

Submitted at: March 23, 2011

Accepted at: June 9, 2011