Size-dependent activity and selectivity of carbon dioxide photocatalytic reduction over platinum nanoparticles.
Size-dependent activity and selectivity of carbon dioxide photocatalytic reduction over platinum nanoparticles.
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二氧化碳光催化还原相对于铂纳米颗粒的尺寸依赖性活性和选择性
DOI:
10.1038/s41467-018-03666-2
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发表时间:
2018-03-28
影响因子:
16.6
通讯作者:
Zhang J
中科院分区:
文献类型:
--
作者:
Dong C;Lian C;Hu S;Deng Z;Gong J;Li M;Liu H;Xing M;Zhang J
Platinum nanoparticles (Pt NPs) are one of the most efficient cocatalysts in photocatalysis, and their size determines the activity and the selectivity of the catalytic reaction. Nevertheless, an in-depth understanding of the platinum’s size effect in the carbon dioxide photocatalytic reduction is still lacking. Through analyses of the geometric features and electronic properties with variable-sized Pt NPs, here we show a prominent size effect of Pt NPs in both the activity and selectivity of carbon dioxide photocatalytic reduction. Decreasing the size of Pt NPs promotes the charge transfer efficiency, and thus enhances both the carbon dioxide photocatalytic reduction and hydrogen evolution reaction (HER) activity, but leads to higher selectivity towards hydrogen over methane. Combining experimental results and theoretical calculations, in Pt NPs, the terrace sites are revealed as the active sites for methane generation; meanwhile, the low-coordinated sites are more favorable in the competing HER. Light-driven carbon dioxide conversion into fuels provides a nature-inspired strategy to combat climate change, but how materials do so remains a challenge. Here, the authors prepare metal–semiconductor composites and find platinum-nanoparticle size controls fuel selectivity and activity.
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影响因子:
16.6
作者:
Kang, Qing;Wang, Tao;Ye, Jinhua
通讯作者:
Ye, Jinhua
影响因子:
15
作者:
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影响因子:
32.5
作者:
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通讯作者:
Jaramillo, Thomas F.
影响因子:
5.7
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Norskov, Jens K.
影响因子:
10.8
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Park, Jeong Young