Pt-1,1′-Bi(2-Naphthol) Nanostructures for Electrochemical H2 Evolution in Alkaline Media

Yu Chung Chang, Lian Ming Lyu, Ren Shiang Tsai, Ruei Hung Juang, Shao Hua Yu, Cheng Shiuan Li, Jeng Lung Chen, Chun Hong Kuo*

*此作品的通信作者

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

This work improved the sluggish kinetics in an alkaline medium’s electrochemical hydrogen evolution reaction (HER) by introducing the π-conjugated electronic effect from rationally designed Pt-1,1′-bi(2-naphthol) (BINOL) hybrid nanocomposites. The inorganic-organic hybrid nanocomposites were aqueously synthesized by a facile one-pot approach upon modulation of the surfactant concentration to precisely control the morphology in organic BINOL entities. This protocol led to different geometric nanostructures, including spheres (Pt-BINOL nanospheres) and lamellar flakes (Pt-BINOL nanoflakes), which allowed for fine-tuning of the d-band states of Pt NPs in the hybrid nanocomposites. In the two kinds of Pt-BINOL nanocomposites, the nanoflakes exhibited a low overpotential (24 mV) at the current density of 10 mA·cm-2 and the Tafel slope (19.1 mV dec-1), showing a superior HER efficiency not only much better than the nanospheres and the Pt/C catalyst but also comparable to the HER electrocatalysts in the late literature, with the lowest charge-transfer resistance (Rct) 11.1 Ω and 1.12% of Pt-weight loading revealing that the Pt-BINOL nanoflakes are a cost-efficient electrocatalyst in alkaline HER. In conclusion, engineering the spatial arrangement of Pt NPs over the π-conjugated BINOL nanocarriers to enhance the Pt-catalyzed HER is important in developing efficient inorganic-organic hybrid nanostructures for generating H2 energy.

原文English
頁(從 - 到)11890-11899
頁數10
期刊ACS Applied Nano Materials
7
發行號10
DOIs
出版狀態Published - 24 5月 2024

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