We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study on Catalytic Performance in CO 2 Hydrogenation to Methanol over Au–Cu/C 3 N 4 Catalysts.
- Authors
Li, Chenyang; Yang, Jian; Zhang, Chongbin; Wang, Cong; Lyu, Chen; Fan, Kai
- Abstract
In this paper, Au and Cu nanoparticles were successfully loaded onto porous g-C3N4 material through a hydrothermal synthesis method. By adjusting the proportion of Cu, Au-5%Cu/C3N4, Au-10%Cu/C3N4, and Au-15%Cu/C3N4, catalysts were prepared and used for the catalytic reduction of CO2 to methanol. Characterization analysis using high-resolution XPS spectra showed that with an increase in the doping amount of Cu, the electron cloud density on the Cu surface initially increased and then decreased. Electrons from Au atoms transferred to Cu atoms, leading to the accumulation of a more negative charge on the Cu surface, promoting the adsorption of partially positively charged C in CO2, which is more beneficial for catalyzing CO2. Among them, Au-10%Cu/C3N4 exhibited good reducibility and strong basic sites, as demonstrated by H2-TPR and CO2-TPD, with the conversion rates for CO2, methanol yield, and methanol selectivity being 11.58%, 41.29 g·kg−1·h−1 (0.39 μmol·g−1s−1), and 59.77%, respectively.
- Subjects
COPPER; POROUS materials; ELECTRON density; GOLD nanoparticles; CATALYTIC reduction
- Publication
Catalysts (2073-4344), 2024, Vol 14, Issue 8, p470
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal14080470