| Full text | |
| Author(s): |
Dias, Eduardo Henrique
;
da Silva, Gelson Tiago dos Santos Tavares
;
Dinh, Cao-Thang
;
Dinh, Khac Huy
;
Mascaro, Lucia Helena
;
Ribeiro, Caue
Total Authors: 6
|
| Document type: | Journal article |
| Source: | CHEMISTRY-A EUROPEAN JOURNAL; v. 31, n. 42, p. 8-pg., 2025-06-30. |
| Abstract | |
Electrochemical CO2 reduction (ECR) offers a promising route for converting CO2 emissions into valuable chemicals. To enhance economic viability, the development of efficient and low-cost catalysts based on nonnoble metals is crucial. This study focuses on copper (Cu) nanoparticles highly dispersed on a carbon black (CB) support, synthesized via a solvothermal method that allows for precise control over particle size and loading. We demonstrate that tuning these properties is essential to steer the selectivity of CO2 reduction toward carbon monoxide (CO). Notably, a low catalyst loading of only 0.159 mg/cm(2) was sufficient to achieve high performance. The optimized catalyst delivered a CO partial current density of 66 mA/cm(2) (total current density of 100 mA/cm(2) with 66% Faradaic efficiency (FE) for CO) at a cell voltage of 3.2 V. Furthermore, our results highlight the critical role of the gas diffusion layer (GDL), showing that its composition significantly impacts catalyst activity. This underscores the necessity of engineering advanced GDLs with tailored conductivity, stability, and hydrophobicity to further boost the performance of Cu-based catalysts in CO2 electrolysis. (AU) | |
| FAPESP's process: | 23/10268-2 - Developing metal phosphide catalysts for selective and high-rate CO2 electroreduction |
| Grantee: | Gelson Tiago dos Santos Tavares da Silva |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 13/07296-2 - CDMF - Center for the Development of Functional Materials |
| Grantee: | Elson Longo da Silva |
| Support Opportunities: | Research Grants - Research, Innovation and Dissemination Centers - RIDC |
| FAPESP's process: | 22/10255-5 - Architectures based on metal phosphides and nitrides for photo(electro)chemical conversion of CO2 into C2+ compounds |
| Grantee: | Gelson Tiago dos Santos Tavares da Silva |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 22/16560-4 - Simultaneous CO2 reduction and CH4 oxidation to fuels in a flow cell using MOx as catalysts |
| Grantee: | Eduardo Henrique Dias |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country |
| Grantee: | Ana Flávia Nogueira |
| Support Opportunities: | Research Grants - Applied Research Centers Program |
| FAPESP's process: | 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products |
| Grantee: | José Maria Correa Bueno |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 19/10689-2 - Preparation of reaction systems for photocatalytic methane-to-methanol selective oxidation |
| Grantee: | Eduardo Henrique Dias |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |