TY - JOUR
T1 - Comparative study of CO2 photoreduction using different conformations of CuO photocatalyst
T2 - Powder, coating on mesh and thin film
AU - Ávila-López, Manuel Alejandro
AU - Gavrielides, Stelios
AU - Luo, Xiaojiao
AU - Ojoajogwu, Abah Ezra
AU - Tan, Jeannie Z. Y.
AU - Luévano-Hipólito, E.
AU - Torres-Martínez, Leticia M.
AU - Maroto-Valer, M. Mercedes
N1 - Funding Information:
The authors thank the financial support provided by the Engineering and Physical Sciences Research Council (EP/K021796/1) and the Research Centre for Carbon Solutions (RCCS) at Heriot-Watt University, United Kingdom; and the financial support from Cátedras CONACYT 1060 and CONACYT-FC-1725 , in Mexico. Manuel Alejandro Ávila López wants to thank CONACYT for the PhD scholarship, number 70725. Stelios Gavrielides thanks CRITICAT for the PhD scholarship. XPS data collection was performed at the EPSRC National Facility for XPS (‘HarwellXPS’), operated by Cardiff University and UCL, under contract No. PR16195.
Funding Information:
The work is financially supported by the Engineering and Physical Sciences Research Council ( EP/K021796/1 ) and CONACYT through the projects Cátedras CONACYT 1060 and CONACYT-FC-1725.
Publisher Copyright:
© 2021 The Author(s).
PY - 2021/8
Y1 - 2021/8
N2 - The use of CuO-based photocatalysts for CO2 photoreduction has been extensively reported in the literature. However, the comparison of the photocatalytic activity and selectivity from the published results becomes difficult due to different experimental conditions (i.e., synthesis method, configuration of photocatalyst, flow rate of gas, water content, light intensity) and reactor geometry employed. Hence, in this work different conformations of CuO-based photocatalyst, namely powder (i.e., synthesized using precipitation, sonochemical and hydrothermal-microwave treatment), coating on glass fiber mesh, and thin film, were tested using the same photoreactor and experimental conditions. All CuO photocatalysts exhibited 100 % product selectivity towards CH4 over CO and the CuO coating on the glass fiber mesh exhibited the highest production of CH4 (56.3 μmol gcat−1 h−1). The morphology, particle size, particle dispersity, and presence of impurities/defects within the CuO photocatalysts had a significant effect on photocatalytic activity. A numerical model, which was built using COMSOL, revealed that the experimental data obtained in this simulated photocatalytic activity study fitted well, however, further optimization was needed.
AB - The use of CuO-based photocatalysts for CO2 photoreduction has been extensively reported in the literature. However, the comparison of the photocatalytic activity and selectivity from the published results becomes difficult due to different experimental conditions (i.e., synthesis method, configuration of photocatalyst, flow rate of gas, water content, light intensity) and reactor geometry employed. Hence, in this work different conformations of CuO-based photocatalyst, namely powder (i.e., synthesized using precipitation, sonochemical and hydrothermal-microwave treatment), coating on glass fiber mesh, and thin film, were tested using the same photoreactor and experimental conditions. All CuO photocatalysts exhibited 100 % product selectivity towards CH4 over CO and the CuO coating on the glass fiber mesh exhibited the highest production of CH4 (56.3 μmol gcat−1 h−1). The morphology, particle size, particle dispersity, and presence of impurities/defects within the CuO photocatalysts had a significant effect on photocatalytic activity. A numerical model, which was built using COMSOL, revealed that the experimental data obtained in this simulated photocatalytic activity study fitted well, however, further optimization was needed.
KW - CuO
KW - Photocatalysis
KW - Powders
KW - Solar fuels
KW - Thin film
UR - http://www.scopus.com/inward/record.url?scp=85107205513&partnerID=8YFLogxK
U2 - 10.1016/j.jcou.2021.101588
DO - 10.1016/j.jcou.2021.101588
M3 - Article
SN - 2212-9820
VL - 50
JO - Journal of CO2 Utilization
JF - Journal of CO2 Utilization
M1 - 101588
ER -