Band engineering of perovskite-type transition metal oxynitrides for photocatalytic overall water splitting

2016 ◽  
Vol 4 (12) ◽  
pp. 4544-4552 ◽  
Author(s):  
Chengsi Pan ◽  
Tsuyoshi Takata ◽  
Kazunori Kumamoto ◽  
Su Su Khine Ma ◽  
Koichiro Ueda ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Solid Solutions ◽  
Water Oxidation ◽  
Band Engineering ◽  
Type Transition ◽  
Overall Water Splitting ◽  
Perovskite Type

In LaMxTa1−xO1+(5−n)xN2−(5−n)x (Mn+ = Mg2+, Sc3+, and Zr4+) solid solutions, increasing the Mn+ (n = 2 and 3) content tuned the bandgap position, which facilitated water oxidation as well as overall water splitting.

Photocatalytic overall water splitting on the perovskite-type transition metal oxynitride CaTaO2N under visible light irradiation

2015 ◽  
Vol 51 (33) ◽  
pp. 7191-7194 ◽  
Author(s):  
Jiasheng Xu ◽  
Chengsi Pan ◽  
Tsuyoshi Takata ◽  
Kazunari Domen
Keyword(s):  
Surface Modification ◽  
Transition Metal ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Type Transition ◽  
Overall Water Splitting ◽  
Perovskite Type

Photocatalytic overall water splitting was achieved on a simple perovskite-type oxynitride CaTaO2N (B.G. = 2.43 eV) after the proper surface modification.

scholarly journals Integration of Bio-inspired lanthanide-transition metal cluster and P-doped carbon nitride for efficient photocatalytic overall water splitting

2020 ◽  
Author(s):  
Rong Chen ◽  
Gui-Lin Zhuang ◽  
Zhi-Ye Wang ◽  
Yi-Jing Gao ◽  
Zhe Li ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Water Oxidation ◽  
Transient Absorption ◽  
Metal Cluster ◽  
Photoexcited Electron ◽  
Ps Ii ◽  
Heterometallic Cluster ◽  
Overall Water Splitting ◽  
Oxygen Evolving

Abstract Photosynthesis in nature uses the Mn4CaO5 cluster as the oxygen-evolving center to catalyze the water oxidation efficiently in photosystem II (PS II). Herein, we demonstrate a bio-inspired heterometallic cluster LnCo3 (Ln = Nd, Eu and Ce) clusters, which can be viewed as synthetic analogs of CaMn4O5 cluster. Anchoring LnCo3 on phosphorus-doped graphitic carbon nitrides (PCN) shows efficient overall water splitting without any sacrificial reagents. The NdCo3/PCN-c photocatalyst exhibits excellent water splitting activity and a quantum efficiency of 2.0% at 350 nm. Ultrafast transient absorption (TA) spectroscopy revealed the transfer of photoexcited electron and hole into the PCN and LnCo3 for hydrogen and oxygen evolution reactions, respectively. DFT calculation showed the cooperative water activation on lanthanide and O-O bond formation on transition metal for water oxidation. This work not only prepares a synthetic model of bio-inspired oxygen-evolving center but also provides an effective strategy to realize light-driven overall water splitting.

Organometallic water splitting – from coordination chemistry to catalysis

2014 ◽  
Vol 34 (3) ◽  
pp. 177-198 ◽  
Author(s):  
Marcus Klahn ◽  
Torsten Beweries
Keyword(s):  
Coordination Chemistry ◽  
Transition Metal ◽  
Water Splitting ◽  
Water Oxidation ◽  
Homogeneous Catalyst ◽  
Water Reduction ◽  
Elementary Steps ◽  
Overall Water Splitting ◽  
Recent Developments ◽  
Catalyst Systems

AbstractThis review gives an overview on the recent developments in the field of coordination chemistry of water at transition metal centres, which could give implications for a better understanding of the elementary steps of light-driven overall water splitting. Additionally, selected examples for homogeneous catalyst systems that are capable of producing hydrogen and/or oxygen from water are presented, focussing on the mechanistic aspects of water reduction and water oxidation.

2D porous molybdenum nitride/cobalt nitride heterojunction nanosheets with interfacial electron redistribution for effective electrocatalytic overall water splitting

2021 ◽  
Author(s):  
Hao Guo ◽  
Aiping Wu ◽  
Ying Xie ◽  
Haijing Yan ◽  
Dongxu Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Water Splitting ◽  
Molybdenum Nitride ◽  
Overall Water Splitting ◽  
Simultaneous Engineering

The binary transition metal-based nitrides are promising for overall water splitting. The morphology and heterojunction engineering are important to realize the effective catalysis, but simultaneous engineering of them remains a...

scholarly journals Single-atom cobalt-hydroxyl modification of polymeric carbon nitride for highly enhanced photocatalytic water oxidation: ball milling increased single atom loading

2022 ◽  
Author(s):  
Fei Yu ◽  
Tingting Huo ◽  
Quanhua Deng ◽  
Guoan Wang ◽  
Yuguo Xia ◽  
...  
Keyword(s):  
Ball Milling ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Carbon Nitride ◽  
Single Atom ◽  
Overall Water Splitting ◽  
Polymeric Carbon

Expediting the oxygen evolution reaction (OER) is the key to achieving efficient photocatalytic overall water splitting. Herein, single-atom Co−OH modified polymeric carbon nitride (Co-PCN) was synthesized with single-atom loading increased...

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