Pt-M(M=Co,Ni,Fe)/g-C 3 N 4 复合材料构建及其高效光解水制氢性能(英文)
发布时间:2024-02-04 19:28
铂(Pt)是公认的优秀助催化剂:一方面,Pt能抑制光催化过程中光生载流子的复合;另一方面,Pt能降低光解水制氢反应过电势。尽管如此,高昂的价格和极低的丰度限制了Pt在光解水制氢中的应用。Pt基过渡金属合金在多种催化反应中呈现出卓越的催化性能,是潜在的助催化材料。在本工作中,我们利用Co、Ni、Fe等过渡金属部分取代贵金属Pt,并以乙二醇为还原剂,通过原位还原H2PtCl6和过渡金属盐制备了Pt-M/g-C3N4 (M=Co, Ni, Fe)复合材料。在可见光照射下,1%(w) Pt2.5M/g-C3N4 (M=Co, Ni, Fe)均表现出比同样条件下Pt负载的复合材料更高或者相当的光解水制氢性能。其次,我们通过调节Pt/Co的原子比例以及Pt-Co合金的负载量进一步优化了光催化性能。结果显示:1%(w) Pt2.5Co/g-C3N4复合材料表现出...
【文章页数】:7 页
【文章目录】:
1 Introduction
2 Experimental
2.1 Materials
2.2 Samples preparation
2.2.1 Preparation of g-C3N4
2.2.2 Preparation of Pt/g-C3N4,Co/g-C3N4 and Pt-M/g-C3N4(M=Co,Fe,Ni)composites
2.3 Characterizations
2.4 Photocatalytic H2 generation
2.5 Photoelectrochemical analyses
3 Results and discussion
3.1 Structural characterizations
3.2 Photocatalytic performance
3.3 Proposed mechanism
4 Conclusions
本文编号:3895730
【文章页数】:7 页
【文章目录】:
1 Introduction
2 Experimental
2.1 Materials
2.2 Samples preparation
2.2.1 Preparation of g-C3N4
2.2.2 Preparation of Pt/g-C3N4,Co/g-C3N4 and Pt-M/g-C3N4(M=Co,Fe,Ni)composites
2.3 Characterizations
2.4 Photocatalytic H2 generation
2.5 Photoelectrochemical analyses
3 Results and discussion
3.1 Structural characterizations
3.2 Photocatalytic performance
3.3 Proposed mechanism
4 Conclusions
本文编号:3895730
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