In situ growth strategy for highly efficient Ag2CO3/g-C3N4 hetero/nanojunctions with enhanced photocatalytic activity under sunlight irradiation
In situ growth strategy for highly efficient Ag2CO3/g-C3N4 hetero/nanojunctions with enhanced photocatalytic activity under sunlight irradiation
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DOI：
10.1016/j.jece.2015.03.021
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发表时间：
2015-06
影响因子：
7.7
通讯作者：
Surendar Tonda;Santosh Kumar;Vishnu Shanker
中科院分区：
文献类型：
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作者：
Surendar Tonda;Santosh Kumar;Vishnu Shanker
Developing novel heterojunction photocatalysts is a powerful strategy for improving the separation efficiency of photogenerated charge carriers, which is attracting the intense research interest in photocatalysis. Herein we report a highly efficient hetero/nanojunction consisting of Ag2CO3nanoparticles grown on layered g-C3N4nanosheets synthesizedviaa facile and template freein situprecipitation method. The UV–vis diffuse reflectance studies revealed that the synthesized Ag2CO3/g-C3N4hetero/nanojunctions exhibit a broader and stronger light absorption in the visible light region, which is highly beneficial for absorbing the visible light in the solar spectrum. The optimum photocatalytic activity of Ag2CO3/g-C3N4at a weight content of 10% Ag2CO3for the degradation of Rhodamine B was almost 5.5 and 4 times as high as that of the pure Ag2CO3and g-C3N4, respectively. The enhanced photocatalytic activity of the Ag2CO3/g-C3N4hetero/nanojunctions is due to synergistic effects including the strong visible light absorption, large specific surface area, and high charge transfer and separation efficiency. More importantly, the high photostability and low use of the noble metal silver which reduces the cost of the material. Therefore, the synthesized Ag2CO3/g-C3N4hetero/nanojunction photocatalyst is a promising candidate for energy storage and environment protection applications.
