BROWSE

Related Researcher

Author

Joo, Sang Hoon
Nanomaterials & Catalysis Lab
Research Interests
  • Catalyst, energy conversion, fuel cells, electrolyzer, ORR, HER, OER

ITEM VIEW & DOWNLOAD

Synthesis of compositionally tunable, hollow mixed metal sulphide CoxNiySz octahedral nanocages and their composition-dependent electrocatalytic activities for oxygen evolution reaction

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Synthesis of compositionally tunable, hollow mixed metal sulphide CoxNiySz octahedral nanocages and their composition-dependent electrocatalytic activities for oxygen evolution reaction
Author
Kim, JunJin, HaneulOh, AramBaik, HionsuckJoo, Sang HoonLee, Kwangyeol
Issue Date
201710
Publisher
ROYAL SOC CHEMISTRY
Citation
NANOSCALE, v.9, no.40, pp.15397 - 15406
Abstract
Hollow nanostructures such as nanocages and nanoframes can serve as advanced catalysts with their enlarged active surface areas, and hence they have been of widespread interest. Despite the recent progress in the synthesis of this class of nanomaterials, hollow nanostructures with tunable compositions and controlled morphologies have rarely been reported. Here, we report a facile synthetic route to a series of compositionally tunable, hollow mixed metal sulphide (CoxNiySz) octahedral nanocages. The sulfidation of CoO octahedral nanoparticles generates CoO@CoxSy core-shell octahedra, and the in situ etching of the CoO core and annealing yield Co9S8 (pentlandite) octahedral nanocages (ONC). The addition of a Ni precursor during the etching/annealing process of CoO@CoxSy core-shell octahedra progressively yields hollow ONC structures of Co9-xNixS8, Ni9S8, Ni9S8/β-NiS, and Ni3S2/β-NiS via cation exchange reactions. Mixed cobalt/nickel sulphide, Co9-xNixS8 ONC, shows superior oxygen evolution reaction activity to monometallic sulphide ONC structures, demonstrating the synergy between different metal species.
URI
Go to Link
DOI
http://dx.doi.org/10.1039/c7nr04327a
ISSN
2040-3364
Appears in Collections:
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU