| Full text | |
| Author(s): |
Rodrigues de Souza, Marcielli Karoline
[1]
;
Freitas Cardoso, Eduardo dos Santos
[1]
;
Fortunato, V, Guilherme
;
Lanza, V, Marcos R.
;
Nazario, Carlos Eduardo
[1]
;
Boldrin Zanoni, Maria Valnice
[2]
;
Maia, Gilberto
[1]
;
Cardoso, Juliano Carvalho
[3, 1]
Total Authors: 8
|
| Affiliation: | [1] Univ Fed Mato Grosso do Sul, Inst Chem, Av Senador Filinto Muller, 1555, CP 549, BR-79074460 Campo Grande, MS - Brazil
[2] Sao Paulo State Univ, UNESP, Inst Chem, Araraquara, SP - Brazil
[3] IPEN CNEN SP, Nucl & Energy Res Inst, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING; v. 9, n. 4 AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The photoelectrocatalysis (PEC) technique was applied in CO2 reduction using different proportions of Cu, Pd, and Pt supported on graphene nanoribbons (GNR) and deposited on the surfaces of TiO2 nanotubes. Altogether, nine combinations of TiO2-NT/GNR-metal were assembled, although only three of them efficiently promoted the generation of methanol and ethanol in high quantities. Comparison with the photocatalysis, photolysis, and electrocatalysis techniques showed the extremely high efficiency of PEC, which enabled production of methanol and ethanol at levels around 19.2-fold and 44.4-fold higher, respectively, than photocatalysis, the second most efficient technique. The presence of metallic nanoparticles in the system facilitated CO2 reduction due to the trapping of the photogenerated electrons, prolonging their lifetime, lowering the reaction energy barrier for CO2 reduction, and provided active intermediates. Therefore, the assembly of these materials containing low amounts of metals is highly promising, since it can assist in alleviating environmental problems caused by CO2 emissions, while at the same time enabling the energetically efficient generation of compounds of commercial value. (AU) | |
| FAPESP's process: | 19/04421-7 - Production and characterization of metal-graphene or graphene oxide nanocomposites for the electrocatalytic production of hydrogen peroxide: Application to the degradation of endocrine disrupting chemicals by electrochemical advanced oxidation processes |
| Grantee: | Guilherme Vilalba Fortunato |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/10118-0 - Study and application of electrochemical technology for the analysis and degradation of endocrine interferents: materials, sensors, processes and scientific dissemination |
| Grantee: | Marcos Roberto de Vasconcelos Lanza |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/18109-4 - Contribution of Nanostructured Materials in Electroanalysis of pharmaceuticals and dyes, in the oxidation and reduction photoeletrocatalytic process of Inorganic and Organic Pollutants and Water Disinfection. |
| Grantee: | Maria Valnice Boldrin |
| Support Opportunities: | Regular Research Grants |