Crystal Facet-Manipulated 2D Pt Nanodendrites to Achieve an Intimate Heterointerface for Hydrogen Evolution Reactions
SCIE
SCOPUS
- Title
- Crystal Facet-Manipulated 2D Pt Nanodendrites to Achieve an Intimate Heterointerface for Hydrogen Evolution Reactions
- Authors
- Hong, Yu-Rim; Dutta, Soumen; Jang, Sun Woo; Ngome Okello, Odongo Francis; Im, Hyeonae; Choi, Si-Young; Han, Jeong Woo; Lee, In Su
- Date Issued
- 2022-05
- Publisher
- American Chemical Society
- Abstract
- © Despite the Pt-catalyzed alkaline hydrogen evolution reaction (HER) progressing via oxophilic metal-hydroxide surface hybridization, maximizing Pt reactivity alongside operational stability is still unsatisfactory due to the lack of well-designed and optimized interface structures. Producing atomically flat two-dimensional Pt nanodendrites (2D-PtNDs) through our 2D nanospace-confined synthesis strategy, this study tackles the insufficient interfacial contact effect during HER catalysis by realizing an area-maximized and firmly bound lateral heterointerface with NiFe-layered double hydroxide (LDH). The well-oriented {110} crystal surface exposure of Pt promotes electronic interplay that bestows strong LDH binding. The charge-relocated interfacial bond in 2D-PtND/LDH accelerates the hydrogen generation steps and achieves nearly the highest reported Pt mass activity enhancement (∼11.2 times greater than 20 wt % Pt/C) and significantly improved long-term operational stability. This work uncovers the importance of the shape and facet of Pt to create heterointerfaces that provide catalytic synergy for efficient hydrogen production.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/112791
- DOI
- 10.1021/jacs.2c01589
- ISSN
- 0002-7863
- Article Type
- Article
- Citation
- Journal of the American Chemical Society, vol. 144, no. 20, page. 9033 - 9043, 2022-05
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