Back to Search
Start Over
In situ synthesis of a nickel boron oxide/graphdiyne hybrid for enhanced photo/electrocatalytic H2 evolution
- Source :
- Chinese Journal of Catalysis. 42:1379-1386
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Developing highly active catalysts for photo/electrocatalytic water splitting is an attractive strategy to produce H2 as a renewable energy source. In this study, a new nickel boron oxide/graphdiyne (NiBi/GDY) hybrid catalyst was prepared by a facile synthetic approach. Benefitting from the strong electron donating ability of graphdiyne, NiBi/GDY showed an optimized electronic structure containing lower valence nickel atoms and demonstrated improved catalytic performance. As expected, NiBi/GDY displayed a high photocatalytic H2 evolution rate of 4.54 mmol g−1 h−1, 2.9 and 4.5 times higher than those of NiBi/graphene and NiBi, respectively. NiBi/GDY also displayed outstanding electrocatalytic H2 evolution activity in 1.0 M KOH solution, with a current density of 400 mA/cm2 at an overpotential of 478.0 mV, which is lower than that of commercial Pt/C (505.3 mV@400 mA/cm2). This work demonstrates that GDY is an ideal support for the development of highly active catalysts for photo/electrocatalytic H2 evolution.
- Subjects :
- Valence (chemistry)
Materials science
Graphene
chemistry.chemical_element
02 engineering and technology
General Medicine
Overpotential
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
Catalysis
Nickel
chemistry
Chemical engineering
law
Boron oxide
Photocatalysis
Water splitting
0210 nano-technology
Subjects
Details
- ISSN :
- 18722067
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Chinese Journal of Catalysis
- Accession number :
- edsair.doi...........29f2e5494b6faaed6e70c0ef1aa16ae2