Enhanced Thermochemical Water Splitting through Formation of Oxygen Vacancy in La0.6Sr0.4BO3−δ (B=Cr, Mn, Fe, Co, and Ni) Perovskites
Author(s)
Wang, Lulu
Al-Mamun, Mohammad
Zhong, Yu Lin
Liu, Porun
Wang, Yun
Yang, Hua Gui
Zhao, Huijun
Year published
2018
Metadata
Show full item recordAbstract
Oxygen vacancies in catalyst systems play a crucial role in manipulating pivotal redox properties that are strongly dependent on the composition of the material. Herein, for the first time, experimental evidence of a linear correlation between the extent of oxygen vacancy formation in the La0.6Sr0.4BO3 (B=Cr, Mn, Fe, Co, and Ni) perovskite series and H2 generation in two‐step thermochemical water splitting is reported, with detailed materials characterization by means of thermogravimetric analysis, XRD, SEM, TEM, and energy‐dispersive X‐ray spectroscopy. Noteworthy O2 (718 μmol g−1) and H2 (514 μmol g−1) production was ...
View more >Oxygen vacancies in catalyst systems play a crucial role in manipulating pivotal redox properties that are strongly dependent on the composition of the material. Herein, for the first time, experimental evidence of a linear correlation between the extent of oxygen vacancy formation in the La0.6Sr0.4BO3 (B=Cr, Mn, Fe, Co, and Ni) perovskite series and H2 generation in two‐step thermochemical water splitting is reported, with detailed materials characterization by means of thermogravimetric analysis, XRD, SEM, TEM, and energy‐dispersive X‐ray spectroscopy. Noteworthy O2 (718 μmol g−1) and H2 (514 μmol g−1) production was achieved by the La0.6Sr0.4CoO3 perovskite in the thermochemical water‐splitting process conducted between 1300 and 900 °C.
View less >
View more >Oxygen vacancies in catalyst systems play a crucial role in manipulating pivotal redox properties that are strongly dependent on the composition of the material. Herein, for the first time, experimental evidence of a linear correlation between the extent of oxygen vacancy formation in the La0.6Sr0.4BO3 (B=Cr, Mn, Fe, Co, and Ni) perovskite series and H2 generation in two‐step thermochemical water splitting is reported, with detailed materials characterization by means of thermogravimetric analysis, XRD, SEM, TEM, and energy‐dispersive X‐ray spectroscopy. Noteworthy O2 (718 μmol g−1) and H2 (514 μmol g−1) production was achieved by the La0.6Sr0.4CoO3 perovskite in the thermochemical water‐splitting process conducted between 1300 and 900 °C.
View less >
Journal Title
ChemPlusChem
Volume
83
Issue
10
Subject
Chemical sciences
Other chemical sciences not elsewhere classified
Oxygen vacancy
Perovskite phases
Redox chemistry
Transition metals
Water splitting