TY  - JOUR
AU  - Nogueira, André E.
AU  - Oliveira, Jéssica A.
AU  - da Silva, Gelson T. S. T.
AU  - Ribeiro, Caue
TI  - Insights into the role of CuO in the CO2 photoreduction process
JO  - Scientific reports
VL  - 9
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - FZJ-2019-02640
SP  - 1316
PY  - 2019
AB  - 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 O2) 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.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.
LB  - PUB:(DE-HGF)16
C6  - pmid:30718712
UR  - <Go to ISI:>//WOS:000457616300204
DO  - DOI:10.1038/s41598-018-36683-8
UR  - https://juser.fz-juelich.de/record/862302
ER  -