制氢
氮化碳
氮化物
材料科学
催化作用
氢
化学工程
碳纤维
石墨氮化碳
甲醇
合金
光催化
纳米颗粒
分解水
纳米技术
无机化学
冶金
化学
有机化学
复合材料
复合数
图层(电子)
工程类
作者
Rocío Sayago-Carro,Pablo Piqueras-Pérez,Ruifeng Du,Junshan Li,Jingkun Yu,Jordi Arbiol,Anna Kubacka,Andreu Cabot,Marcos Fernández-García
标识
DOI:10.1016/j.jece.2023.110921
摘要
The effect of a binary PtNi co-catalyst supported on graphitic carbon nitride nanosheets is studied in the photo-production of hydrogen from methanol:water mixtures. The physicochemical analysis provides evidence that the carbon nitride support allows the formation of highly dispersed PtNi nanoparticles with an average composition of Pt 85% Ni 15%. The binary system outperforms the monometallic Pt and Ni counterparts and renders an extraordinary quantum efficiency of 8.8% for hydrogen photo-production. The formation of a PtNi alloy, with a Pt-enriched surface and electronic properties influenced by the heterometallic contact, provides high and stable activity, mostly as a consequence of the effects that the co-catalyst exerts on the charge carrier handling capability of the solid.
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