Linking surface chemistry to photovoltage in Sr-substituted LaFeO3 for water oxidation

2018 ◽  
Vol 6 (44) ◽  
pp. 22170-22178 ◽  
Author(s):  
Kelsey A. Stoerzinger ◽  
Le Wang ◽  
Yifan Ye ◽  
Mark Bowden ◽  
Ethan J. Crumlin ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Water Oxidation ◽  
Perovskite Oxides

Perovskite oxides are promising materials for photoabsorbers and electrocatalysts for solar-driven water oxidation.

scholarly journals An aqueous preoxidation method for monolithic perovskite electrocatalysts with enhanced water oxidation performance

2016 ◽  
Vol 2 (10) ◽  
pp. e1600495 ◽  
Author(s):  
Bo-Quan Li ◽  
Cheng Tang ◽  
Hao-Fan Wang ◽  
Xiao-Lin Zhu ◽  
Qiang Zhang
Keyword(s):  
Water Oxidation ◽  
Fenton Reaction ◽  
Nickel Foam ◽  
Three Dimensional ◽  
Active Phase ◽  
Perovskite Oxides ◽  
High Temperature Annealing ◽  
Current Collectors ◽  
Oxidation Performance

Perovskite oxides with poor conductivity call for three-dimensional (3D) conductive scaffolds to demonstrate their superb reactivities for oxygen evolution reaction (OER). However, perovskite formation usually requires high-temperature annealing at 600° to 900°C in air, under which most of the used conductive frameworks (for example, carbon and metal current collectors) are reductive and cannot survive. We propose a preoxidization coupled electrodeposition strategy in which Co2+ is preoxidized to Co3+ through cobalt Fenton reaction in aqueous solution, whereas the reductive nickel framework is well maintained during the sequential annealing under nonoxidative atmosphere. The in situ–generated Co3+ is inherited into oxidized perovskites deposited on 3D nickel foam, rendering the monolithic perovskite electrocatalysts with extraordinary OER performance with an ultralow overpotential of 350 mV required for 10 mA cm−2, a very small Tafel slope of 59 mV dec−1, and superb stability in 0.10 M KOH. Therefore, we inaugurate a unique strategy for in situ hybridization of oxidative active phase with reductive framework, affording superb reactivity of perovskite electrocatalyst for efficient water oxidation.

scholarly journals Dynamic carbon surface chemistry: Revealing the role of carbon in electrolytic water oxidation

2020 ◽  
Vol 47 ◽  
pp. 155-159 ◽  
Author(s):  
Yuxiao Ding ◽  
Qingqing Gu ◽  
Alexander Klyushin ◽  
Xing Huang ◽  
Sakeb H. Choudhury ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Water Oxidation ◽  
Carbon Surface

Pushing the Limits of Metastability in Semiconducting Perovskite Oxides for Visible-Light-Driven Water Oxidation

2020 ◽  
Vol 32 (7) ◽  
pp. 3054-3064
Author(s):  
Shaun O’Donnell ◽  
Ching-Chang Chung ◽  
Abigail Carbone ◽  
Rachel Broughton ◽  
Jacob L. Jones ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Oxidation ◽  
Perovskite Oxides ◽  
Visible Light Driven

Super‐Exchange Interaction Induced Overall Optimization in Ferromagnetic Perovskite Oxides Enables Ultrafast Water Oxidation

Small ◽  
2019 ◽  
Vol 15 (39) ◽  
pp. 1903120 ◽  
Author(s):  
Jie Dai ◽  
Yinlong Zhu ◽  
Yichun Yin ◽  
Hassan A. Tahini ◽  
Daqin Guan ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Water Oxidation ◽  
Perovskite Oxides ◽  
Super Exchange Interaction

Surface chemistry and restructuring in thin-film Lan+1NinO3n+1 (n = 1, 2 and 3) Ruddlesden–Popper oxides

2017 ◽  
Vol 5 (19) ◽  
pp. 9003-9013 ◽  
Author(s):  
K.-T. Wu ◽  
H. Téllez ◽  
J. Druce ◽  
M. Burriel ◽  
F. Yang ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Chemistry ◽  
Perovskite Oxides ◽  
Surface Exchange ◽  
Great Relevance ◽  
Electrochemical Devices ◽  
Oxygen Surface Exchange ◽  
Oxygen Surface ◽  
Exchange Activity

Understanding the surface chemistry and oxygen surface exchange activity in mixed conducting perovskite and related perovskite oxides is of great relevance in developing electrochemical devices.

Oxygen defect engineering in double perovskite oxides for effective water oxidation

2020 ◽  
Vol 8 (21) ◽  
pp. 10957-10965 ◽  
Author(s):  
Yunmin Zhu ◽  
Xiao Zhong ◽  
Shiguang Jin ◽  
Haijun Chen ◽  
Zuyun He ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
Oxygen Defect ◽  
Defect Engineering ◽  
Effective Water

Generating oxygen vacancies in PrBa0.5Sr0.5Co1.5Fe0.5O5+δvia plasma treatment for strongly boosted oxygen evolution reaction activity.

The effect of Fe (Ⅲ) ions on oxygen-vacancy-rich BiVO4 in photocatalytic oxygen evolution reaction

2021 ◽  
Author(s):  
Wenjun Han ◽  
Huiwen Lin ◽  
Fan Fang ◽  
Yaqian Zhang ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Surface Chemistry ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Particle Structure ◽  
Efficient Separation

Achieving efficient separation and transfer of the photogenerated carriers is significant in improving photocatalytic water oxidation over BiVO4, which is strongly related to the particle structure and surface chemistry, but...

scholarly journals Recent Advances of First d-Block Metal-Based Perovskite Oxide Electrocatalysts for Alkaline Water Splitting

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 770 ◽  
Author(s):  
Jian Wang ◽  
Subin Choi ◽  
Juwon Kim ◽  
Suk Won Cha ◽  
Jongwoo Lim
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Large Scale ◽  
Perovskite Oxides ◽  
Perovskite Oxide ◽  
Design Strategies ◽  
Alkaline Water Electrolysis ◽  
Engineering Strain ◽  
Alkaline Water ◽  
Recent Advances

First d-block metal-based perovskite oxides (FDMPOs) have garnered significant attention in research for their utilization in the water oxidation reaction due to their low cost, earth abundance, and promising activities. Recently, FDMPOs are being applied in electrocatalysis for the hydrogen evolution reaction (HER) and overall water splitting reaction. Numerous promising FDMPO-based water splitting electrocatalysts have been reported, along with new catalytic mechanisms. Therefore, an in-time summary of the current progress of FDMPO-based water splitting electrocatalysts is now considered imperative. However, few reviews have focused on this particular subject thus far. In this contribution, we review the most recent advances (mainly within the years 2014–2020) of FDMPO electrocatalysts for alkaline water splitting, which is widely considered to be the most promising next-generation technology for future large-scale hydrogen production. This review begins with an introduction describing the fundamentals of alkaline water electrolysis and perovskite oxides. We then carefully elaborate on the various design strategies used for the preparation of FDMPO electrocatalysts applied in the alkaline water splitting reaction, including defecting engineering, strain tuning, nanostructuring, and hybridization. Finally, we discuss the current advances of various FDMPO-based water splitting electrocatalysts, including those based on Co, Ni, Fe, Mn, and other first d-block metal-based catalysts. By conveying various methods, developments, perspectives, and challenges, this review will contribute toward the understanding and development of FDMPO electrocatalysts for alkaline water splitting.

scholarly journals Insights on the surface chemistry of BiVO4 photoelectrodes and the role of Al overlayers on its water oxidation activity

2020 ◽  
Vol 605 ◽  
pp. 117796
Author(s):  
Kristine Rodulfo Tolod ◽  
Tapish Saboo ◽  
Simelys Hernández ◽  
Hilmar Guzmán ◽  
Micaela Castellino ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Water Oxidation ◽  
Oxidation Activity
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