Influence of Different Preparation Methods of Silver-Modified Carbon Nitride on the Photocatalytic Activity towards Indigo Carmine Dye

Abstract:

Silver nanoparticles (Ag NPs) may increase photocatalytic activity of widely used photocatalysts under visible light irradiation and decrease recombination probability of photogenerated electrons and holes. In this paper, we report three different preparation methods to obtain Ag/C₃N₄ nanocomposites. We used Ag nanoparticles a) synthesized by using sodium borohydride, b) synthesized by using UV 365 nm LED and c) already prepared and purchased from company nanoIron. The Ag NPs have been loaded on thermally exfoliated carbon nitride with the aim to form 5 wt.% Ag/C₃N₄ nanocomposites. Further their photocatalytic activity was tested towards Indigo carmine dye (IC) under 416 nm LED. The results show that method a) loaded different amount and size of Ag NPs on the surface of C₃N₄, b) changed optoelectronic behaviors of nanocomposites and c) significantly influenced their photocatalytic activity.

• Periodical: Materials Science Forum (Volume 990)
• Pages: 133-138
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.990.133
• Online since: May 2020
• Authors: Ladislav Svoboda*, Richard Dvorsky, Jiří Bednář, Dalibor Matýsek, Marketa Pomiklová
• Keywords: Carbon Nitride, Indigo Carmine, Photocatalysis, Silver Nanoparticles

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