Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 99, Issue 1, Pages 101-108Publisher
SPRINGER
DOI: 10.1007/s10971-021-05549-3
Keywords
Co/ZnO/N-C; Composite oxide; Structural transformation; Catalytic reduction
Categories
Funding
- Anhui Provincial Natural Science Foundation [1908085QB71]
Ask authors/readers for more resources
In this study, zeolitic imidazole frameworks were synthesized from ZnO and Co-ZnO nanocomposites, resulting in ZnO/N-C and Co/ZnO/N-C composites which were employed as catalysts for the reduction of p-nitrophenol. The Co/ZnO/N-C composite exhibited a more efficient catalytic ability, highlighting the importance of metallic cobalt, dispersion, size, and N doping on carbon for catalytic performance.
Zinc oxide (ZnO) and cobalt (Co)-ZnO nanocomposites were first reacted with 2-Methylimidazole to synthesize the zeolitic imidazole frameworks as precursors. After calcination in nitrogen, the ZnO/N-C and Co/ZnO/N-C composites were received, respectively. The structure and composition of the samples at different stages were characterized in order to illustrate the transformation process. Finally, the ZnO/N-C and Co/ZnO/N-C composites were employed as catalysts for the hydrogenation of p-nitrophenol by sodium borohydride. The catalytic results suggested that the Co/ZnO/N-C composite with a proper amount of metallic cobalt, better dispersion, small size, and synergetic effect of N doping on carbon displayed a much more efficient catalytic ability for the reduction of p-nitrophenol in comparison with the ZnO/N-C composite as well as the Co/N-C composite synthesized by ZIF-67. The present work would provide further insight into the design of metal-carbon-based materials from the corresponded metal-organic frameworks derived from the relevant metal oxides and development of their applications from the aspect of interface and colloid chemistry. [GRAPHICS] .
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available