Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Insights into the role of CuO in the CO2 photoreduction process

Full text
Author(s):
Nogueira, Andre E. [1, 2] ; Oliveira, Jessica A. [2, 3] ; da Silva, Gelson T. S. T. [4, 2] ; Ribeiro, Caue [2, 5]
Total Authors: 4
Affiliation:
[1] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Nanotechnol Natl Lab LNNano, BR-13083970 Campinas, SP - Brazil
[2] Embrapa Instrumentat, Rua 15 Novembro, 1452, BR-13560970 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Chem Engn, Via Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[4] Univ Fed Sao Carlos, Dept Chem, Via Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil
[5] Forschungszentrum Julich, Inst Energie & Klimaforsch IEK 3, Elektrochem Verfahrenstech, D-52425 Julich - Germany
Total Affiliations: 5
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 9, FEB 4 2019.
Web of Science Citations: 2
Abstract

The CO2 photoreduction process to produce light hydrocarbons is known to be influenced by the presence of CuO nanoparticles, but the actual role of this material, whether as a catalyst or a reactant, has not yet been revealed. In this work, we investigate the role of CuO nanoparticles produced by a solvothermal method as a catalyst in CO2-saturated water reaction media under UV light, considering the effects of different electrolytes (Na2C2O4, KBrO3, and NaOH) and temperatures on nanoparticle phase and activity. The electrolyte strongly influenced product selectivity (NaOH led to evolution of CH4, Na2C2O4 to CO, and KBrO3 to O-2) and induced CuO phase change. A long-term analysis of these processes indicated that during the initial steps, CuO acted as a reactant, rather than as a catalyst, and was converted to CuCO3 center dot Cu(OH)(2), while the as-converted material acted as a catalyst in CO2 photoreduction, with conversion values comparable to those reported in the literature. (AU)

FAPESP's process: 16/21515-7 - Development of magnesium oxide with zinc and titanium heterostructure for application in artificial photosynthesis processes
Grantee:Juliana Arriel Torres
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 16/09746-3 - Electro-/Photoelectrocatalysis Reduction of CO2: Efficiency, Selectivity and Oscillatory Kinetics
Grantee:Osmando Ferreira Lopes
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/14330-8 - Studies in the synthesis and application of semiconducting nanocrystal heterostructures in artificial photosynthetic processes
Grantee:Cauê Ribeiro de Oliveira
Support type: Research Program on Global Climate Change - Regular Grants
FAPESP's process: 14/09014-7 - STUDY OF THE POTENTIAL OF NANO-HETEROSTRUCTURE OF COPPER AND NIOBIUM OXIDE FOR USE IN ARTIFICIAL PHOTOSYNTHESIS
Grantee:André Esteves Nogueira
Support type: Scholarships in Brazil - Post-Doctorate