NiS2/MoS2 hetero-nanosheets grown on double-layered hollow carbon nanospheres for enhanced hydrogen evolution reaction
Authors:
- Xinxin Luan,
- Kaili Zhu,
- Chuanjie Wang,
- Wenbin Shi,
- Alicja Szymska,
- Katarzyna Matras-Postolek,
- Ping Yang
Abstract
To obtain catalysts with high hydrogen evolution reaction (HER) activity and low initial potential, NiS2/MoS2 composite nanosheets are grown on double-layer hollow carbon spheres (DLHCs@NiS2/MoS2) by a template method including calcination and hydrothermal processes. DLHCs as excellent electrocatalytic substrates reveal large specific surface area, high conductivity, and much more attachment sites. The DLHCs as the substrate greatly reduce the aggregation of MoS2 nanosheets, which reveal more active sites and excellent activity of hydrogen production. The result indicates that MoS2 nanosheets have high catalytic activity under acidic conditions and low catalytic activity under alkaline conditions. Furthermore, layered NiS2/MoS2 heterojunctions are created in site on DLHCs by a two-step hydrothermal procedure. The resulting sample exhibits low overpotential and high HER activity both in acidic and alkaline conditions. Using optimized preparation conditions, sample DLHCs@NiS2/MoS2-6 reveal enhanced HER activity in a broad pH range. The onset potentials are 159 and 139 mV at 1 mA cm2 in acidic and alkaline conditions, respectively. The formation of DLHCs@NiS2/MoS2 composites provides an efficient way to develop catalysts for water splitting.
- Record ID
- CUTe04b901b833b4f0988a8bd5336c09494
- Publication categories
- ;
- Author
- Journal series
- Advanced Materials Interfaces, ISSN 2196-7350
- Issue year
- 2022
- Vol
- 9
- No
- 35
- Pages
- [1-9]
- Article number
- 2201661
- Other elements of collation
- fot.; schem.; tab.; wykr.; Oznaczenie streszczenia - Streszcz. ang.; Data udostępnienia on-line - 2022-10-20; Numeracja w czasopiśmie - Vol. 9, Iss. 35
- Substantive notes
- Bibliogr. w przypisach
- Keywords in English
- hollow carbon spheres, hydrogen evolution reactions, MoS2, NiS
- ASJC Classification
- ;
- DOI
- DOI:10.1002/admi.202201661 Opening in a new tab
- URL
- https://onlinelibrary.wiley.com/doi/full/10.1002/admi.202201661 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTe04b901b833b4f0988a8bd5336c09494/
- URN
urn:pkr-prod:CUTe04b901b833b4f0988a8bd5336c09494
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.