Complete oxidation of acetaldehyde over a composite photocatalyst of graphitic carbon nitride and tungsten(VI) oxide under visible-light irradiation

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• 作者：Zhengyuan Jin ; Naoya Murakami ; Toshiki Tsubota ; Teruhisa Ohno
• 关键词：g-C3N4 ; WO3 ; Photocatalysis ; Planetary mill ; Z-scheme
• 刊名：Applied Catalysis B: Environmental
• 出版年：5 May, 2014
• 年：2014
• 卷：150-151
• 期：Complete
• 页码：479-485
• 全文大小：2187 K

文摘

Graphitic carbon nitride (g-C₃N₄) was prepared by heating melamine and then its specific surface area was enlarged by hydrothermal treatment in aqueous sodium hydroxide solution. The g-C₃N₄ samples were blended with tungsten(VI) oxide (WO₃) using a planetary mill in order to improve photocatalytic activity. The composite photocatalyst with optimized amounts of these contents showed higher photocatalytic activity for decomposition of acetaldehyde under visible-light irradiation than did original samples. From the results, we concluded that the composite photocatalyst utilizes both high oxidation ability of WO₃ and high reduction ability of g-C₃N₄ by Z-scheme charge transfer.