Facile two-step treatment of carbon nitride for preparation of highly efficient visible-light photocatalyst
Facile two-step treatment of carbon nitride for preparation of highly efficient visible-light photocatalyst
复制标题
氮化碳简便的两步处理制备高效可见光光催化剂
DOI:
10.1016/j.apcatb.2018.01.056
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发表时间:
2018-07
期刊:
影响因子:
--
通讯作者:
Lin Dong
中科院分区:
文献类型:
--
作者:
Ningxin Jiang;Hongjia Wang;Yidan Luo;Shuohan Yu;Annai Liu;Weixin Zou;Fei Gao;Lin Dong
Tailoring the microstructure of graphitic carbon nitride (GCN) is an effective way to improve its photocatalytic activities. Protonation of GCN has been extensively studied, while few researches focused on modifying GCN with alkali. Herein, we report a facile two-step hydrothermal-calcination method to modify GCN. After hydrothermal treatment with ammonia solution and subsequently calcination under argon atmosphere, the as-synthesized GCN-xh-Ar (x stands for hydrothermal time) samples exhibit drastically improved photocatalytic activities towards photocatalytic degradation of RhB and evolution of hydrogen. The GCN-2h-Ar sample shows the highest hydrogen evolution rate of 736 μmol h−1g−1, which is nearly 11 times of pristine GCN (67 μmol h−1g−1). The improved activities of samples can be attributed to the higher surface area, larger pore volume and enhanced visible light absorption. This approach sheds light on the synthesis of highly efficient photocatalysts.
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影响因子:
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