TY - JOUR
T1 - Solar-driven efficient methane catalytic oxidation over epitaxial ZnO/La0.8Sr0.2CoO3 heterojunctions
AU - Yang, Ji
AU - Xiao, Wen
AU - Chi, Xiao
AU - Lu, Xingxu
AU - Hu, Siyu
AU - Wu, Zili
AU - Tang, Wenxiang
AU - Ren, Zheng
AU - Wang, Sibo
AU - Yu, Xiaojiang
AU - Zhang, Lizhi
AU - Rusydi, Andrivo
AU - Ding, Jun
AU - Guo, Yanbing
AU - Gao, Pu Xian
N1 - Publisher Copyright:
© 2019
PY - 2020/5/15
Y1 - 2020/5/15
N2 - Gas flaring in oil/gas drilling and gas leakage in natural gas power plant lead to significant energy loss and environmental burden. Here, solar-driven efficient methane oxidation was demonstrated under high velocity continuous flow over the ZnO/La0.8Sr0.2CoO3 (ZnO/LSCO) heterojunctions. The ZnO/LSCO heterojunctions enable a unique epitaxial hetero-interface, which effectively regulates the electron transfer between Zn 3d-O 2p hybrid orbital in ZnO and Co eg orbital in LSCO and promotes the rapid generation and refill of oxygen vacancy with unpaired electron (Vo[rad]), thus enhancing the activity and mobility of surface lattice oxygen in ZnO/LSCO. Under solar illumination, the synergy of photothermal and photocatalytic effect boosts the reversible electron transfer in the interface, which further activates surface lattice oxygen, resulting in a ∼2 times higher methane oxidation activity. Such a solar-driven system not only enables a promising pathway for emitted methane utilization, but also provides an advanced catalyst design concept of epitaxial interface construction.
AB - Gas flaring in oil/gas drilling and gas leakage in natural gas power plant lead to significant energy loss and environmental burden. Here, solar-driven efficient methane oxidation was demonstrated under high velocity continuous flow over the ZnO/La0.8Sr0.2CoO3 (ZnO/LSCO) heterojunctions. The ZnO/LSCO heterojunctions enable a unique epitaxial hetero-interface, which effectively regulates the electron transfer between Zn 3d-O 2p hybrid orbital in ZnO and Co eg orbital in LSCO and promotes the rapid generation and refill of oxygen vacancy with unpaired electron (Vo[rad]), thus enhancing the activity and mobility of surface lattice oxygen in ZnO/LSCO. Under solar illumination, the synergy of photothermal and photocatalytic effect boosts the reversible electron transfer in the interface, which further activates surface lattice oxygen, resulting in a ∼2 times higher methane oxidation activity. Such a solar-driven system not only enables a promising pathway for emitted methane utilization, but also provides an advanced catalyst design concept of epitaxial interface construction.
KW - Epitaxial hetero-interface
KW - Photo-excited electrons
KW - Photothermal effect
KW - Reversible electron transfer
KW - Solar-driven methane oxidation
UR - http://www.scopus.com/inward/record.url?scp=85077384983&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2019.118469
DO - 10.1016/j.apcatb.2019.118469
M3 - Article
AN - SCOPUS:85077384983
SN - 0926-3373
VL - 265
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
M1 - 118469
ER -