Gold nanodot assembly within a cobalt chalcogenide nanoshell: Promotion of electrocatalytic activity
- Title
- Gold nanodot assembly within a cobalt chalcogenide nanoshell: Promotion of electrocatalytic activity
- Author
- 유효종
- Keywords
- Nanohybrids; Dots-in-shell; Nano metal–organic framework; Hollow structure; Oxygen evolution reaction
- Issue Date
- 2021-07
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Citation
- JOURNAL OF COLLOID AND INTERFACE SCIENCE, v. 605, Page. 274-285
- Abstract
- The assembly of functional nanoparticles within materials with unique architectures can improve the interfacial surfaces, defects, and active sites, which are key factors for the designing novel nanocatalysts. Nano metal-organic framework (NMOF) can be employed to fabricate nanodots-confined nanohybrids for use in electrocatalytic processes. Herein, we report a controlled synthesis of gold nanodot assembly within cobalt chalcogenide nanoshell (dots-in-shell Au/CoxSy nanohybrids). A cobalt-based NMOF (the cobalt-based zeolite imidazole framework, ZIF-67) is used as a versatile sacrificial template to yield dots-in-shell Au/CoxSy nanohybrids. Due to the synergistic effect of the well-dispersed Au nanodots and the thin CoxSy nanoshell, the obtained dots-in-shell Au/CoxSy nanohybrids exhibit enhanced performance for the oxygen evolution reaction (OER) with low overpotential values at a current density of 10 mA cm(-2) and a small Tafel slope (343 mV and 62 mV dec(-1), respectively).
- URI
- https://www.sciencedirect.com/science/article/pii/S0021979721011358https://repository.hanyang.ac.kr/handle/20.500.11754/172494
- ISSN
- 0021-9797
- DOI
- 10.1016/j.jcis.2021.07.075
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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