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

Enhancing TiO2 activity for CO2 photoreduction through MgO decoration

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Author(s):
Torres, Juliana A. [1] ; Nogueira, Andre E. [2] ; da Silva, Gelson T. S. T. [3, 1] ; Lopes, Osmando F. [4] ; Wang, Yanjie [5] ; He, Tao [6, 5] ; Ribeiro, Caue [1, 7]
Total Authors: 7
Affiliation:
[1] Embrapa Instrumentat, Natl Nanotechnol Lab Agribusiness LNNA, BR-13561206 Sao Carlos, SP - Brazil
[2] Fed Univ Ouro Preto UFOP, Inst Exact & Biol Sci ICEB, Dept Chem, BR-35400000 Ouro Preto, MG - Brazil
[3] Fed Univ Sao Carlos UFSCar, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
[4] Fed Univ Uberlandia IQUFU, Inst Chem, BR-38400902 Uberlandia, MG - Brazil
[5] Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190 - Peoples R China
[6] Univ Chinese Acad Sci, Beijing 100049 - Peoples R China
[7] Forschungszentrum Julich, Inst Energy & Climate Res, IEK 3 Electrochem Proc Engn, D-52425 Julich - Germany
Total Affiliations: 7
Document type: Journal article
Source: JOURNAL OF CO2 UTILIZATION; v. 35, p. 106-114, JAN 2020.
Web of Science Citations: 0
Abstract

Herein we report on the influence of MgO's basic character in the photoactivity of MgO:TiO2 nanocomposites for the CO2 reduction reaction. TiO2 nanoparticles, decorated with MgO in different mass proportions, were synthesized by the physical mixing of pre-synthesized oxides followed by calcination. The decorated samples presented enhanced photocatalytic activity with higher selectivity for CO, while CH4 was also produced, as well as HCOOH and CH3COOH in a liquid medium in lower proportions. The results indicate that the beneficial MgO influence is only effective at low amounts, whilst a high MgO amount favors an insulating behavior instead of semiconducting, reducing the nanocomposite performance for CO2 photoreduction. (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: 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