화학공학소재연구정보센터
International Journal of Hydrogen Energy, Vol.42, No.12, 7930-7937, 2017
An efficient exfoliation method to obtain graphitic carbon nitride nanosheets with superior visible-light photocatalytic activity
Graphitic carbon nitride (g-C3N4) has a promising application in the photocatalytic field due to its large aspect ratio and the favorable band gap energy. Herein, g-C3N4 nanosheets (g-C3N4 NS) with high photoactivity are obtained with the aid of isopropanol (IPA) in the synthesis process. The introduced IPA causes a more intense oxidation in the exfoliation process and the obtained g-C3N4 NS owns its unique properties of a broaden absorption range of visible light, an enlarged surface area and the irregular surface. As a result, the g-C3N4 NS has good photocatalytic activity in the degradation of organic pollutant. Moreover, the photocatalytic hydrogen evolution rate of g-C3N4 NS is three times as that of g-C3N4 NS* synthesized without IPA using the same method. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.