A stable Ag3PO4@g-C3N4 hybrid core@shell composite with enhanced visible light photocatalytic degradation
A stable Ag3PO4@g-C3N4 hybrid core@shell composite with enhanced visible light photocatalytic degradation
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一种稳定的Ag3PO4@g-C3N4杂化核@壳复合材料，具有增强的可见光催化降解能力
DOI：
10.1016/j.apcatb.2015.10.035
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发表时间：
2016-04-01
影响因子：
22.1
通讯作者：
Cui, Wenquan
中科院分区：
文献类型：
--
作者：
Liu, Li;Qi, Yuehong;Cui, Wenquan
采用超声-化学吸附法制备了Ag 3 PO 4 @ g-C3 N4核壳复合材料。研究了Ag 3 PO 4 @ g-C3 N4复合材料对亚甲基蓝（MB）的光催化降解性能。Ag 3 PO 4 @ g-C3 N4样品表现出最好的光催化活性，在照射30 min后降解97% MB。在循环运行中也观察到优异的上级稳定性。该复合材料具有良好的光催化活性和光稳定性，复合材料中g-C3 N4的最佳含量为7.0wt.%。光电流和交流阻抗测试结果证实了这种有效的光生电荷分离源于紧密接触界面的强相互作用。根据实验结果，提出了Ag 3 PO 4 @ g-C3 N4光催化剂降解有机物的机理。(C)2015 Elsevier B. V.版权所有。
Ag3PO4@g-C3N4 core@shell composites were prepared via an ultrasonication/chemisorption method. The degradation of methylene blue (MB) over Ag3PO4@g-C3N4 composites was investigated to evaluate their photocatalytic performance. The Ag3PO4@g-C3N4 sample presented the best photocatalytic activity, degrading 97% MB after irradiation for 30 min. Superior stability was also observed in the cyclic runs. The composite has excellent photocatalytic activity and photo-stability and the optimal content of g-C3N4 in the composites is 7.0 wt.%. The efficient photo-generated charge separation originated from a strong interaction in the intimately contact interface, which was confirmed by the results of photocurrent and EIS measurements. Based on the experimental results, a photocatalytic mechanism for organics degradation over Ag3PO4@g-C3N4 photocatalysts was proposed. (C) 2015 Elsevier B.V. All rights reserved.