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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Ag/Ag3PO4/g-C3N4三元复合光催化剂的制备及其可见光驱动下的光催化活性增强
DOI: 10.1016/S1872-2067(12)60712-8, PP. 78-84
Keywords: 银纳米粒子,磷酸银,石墨型氮化碳,表面等离子共振,异质结
Abstract:
？报道了一种新型Ag/Ag3PO4/g-C3N4三元复合光催化剂的制备及其半导体界面处的快速载流子分离所引起的光催化活性的显著增强效应。通过X射线衍射，扫描电子显微镜，紫外-可见吸收光谱以及光致发光光谱等就其晶体结构、形貌、组分、光学吸收以及载流子的快速分离行为进行了表征与分析。以罗丹明B作为模型化合物分子，研究发现，所制备的Ag/Ag3PO4/g-C3N4三元复合光催化剂在可见光照射下表现出比Ag3PO4以及Ag3PO4/g-C3N4二元催化剂更为优异的光催化活性。研究认为，Ag3PO4表面尺寸约为40nm的Ag纳米粒子在可见光下受激所产生的等离子表面共振效应以及Ag3PO4与g-C3N4界面处所形成的类似异质结结构对所制备的Ag/Ag3PO4/g-C3N4三元复合光催化剂光催化活性的显著增强起到重要作用。
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