Nanoporous Graphitic Carbon Nitride with Enhanced Photocatalytic Performance

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• 作者：Jing Xu ; Yajun Wang ; Yongfa Zhu
• 刊名：Langmuir
• 出版年：2013
• 出版时间：August 20, 2013
• 年：2013
• 卷：29
• 期：33
• 页码：10566-10572
• 全文大小：403K
• 年卷期：v.29,no.33(August 20, 2013)
• ISSN：1520-5827

文摘

Nanoporous g-C₃N₄ (npg-C₃N₄) with high surface area was prepared by a bubble-templating method. A higher calcination heating rate and proportion of thiourea can result in a larger surface area and better adsorption and photodegradation activities of npg-C₃N₄. Compared with the bulk g-C₃N₄, the adsorption capacity for the target pollutants and photocatalytic degradation and photocurrent performances under visible light irradiation of npg-C₃N₄ were greatly improved. The optimal photodegradation activity of npg-C₃N₄ was 3.4 times as high as that of the bulk g-C₃N₄. The enhanced activities of npg-C₃N₄ can be attributed to the larger number of surface active sites, improved separation of photogenerated electron鈥揾ole pairs, and higher efficiency of charge immigration.