Atomic layer deposition-triggered hierarchical core/shell stable bifunctional electrocatalysts for overall water splitting

2021 ◽  
Vol 9 (37) ◽  
pp. 21132-21141
Author(s):  
T. Kavinkumar ◽  
Selvaraj Seenivasan ◽  
Hyeonjung Jung ◽  
Jeong Woo Han ◽  
Do-Heyoung Kim
Keyword(s):  
Surface Modification ◽  
Atomic Layer Deposition ◽  
Water Splitting ◽  
Atomic Layer ◽  
Core Shell ◽  
Interface Engineering ◽  
Bifunctional Electrocatalyst ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Layer Deposition

A synergistic strategy of interface engineering and surface modification is efficient to construct a promising bifunctional electrocatalyst for enhanced electrocatalytic water splitting.

One-Dimensional TiO2@GaON Core-Shell Nanowires with Controlled Shell Thickness from Atomic Layer Deposition for Stable and Efficient Photoelectrochemical Water Splitting

2019 ◽  
Author(s):  
Jiajia Tao ◽  
Hong-Ping Ma ◽  
Kaiping Yuan ◽  
Yang Gu ◽  
Jianwei Lian ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Band Gap ◽  
Water Splitting ◽  
Atomic Layer ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Photoelectrochemical Performance ◽  
Highly Efficient ◽  
Layer Deposition ◽  
Shell Nanowires

<div>As a promising oxygen evolution reaction semiconductor, TiO2 has been extensively investigated for solar photoelectrochemical water splitting. Here, a highly efficient and stable strategy for rationally preparing GaON cocatalysts on TiO2 by atomic layer deposition is demonstrated, which we show significantly enhances the</div><div>photoelectrochemical performance compared to TiO2-based photoanodes. For TiO2@20 nm-GaON core-shell nanowires a photocurrent density up to 1.10 mA cm-2 (1.23 V vs RHE) under AM 1.5 G irradiation (100 mW cm-2) has been achieved, which is 14 times higher than that of TiO2 NWs. Furthermore, the oxygen vacancy formation on GaON as well as the band gap matching with TiO2 not only provides more active sites for water oxidation but also enhances light absorption to promote interfacial charge separation and migration. Density functional theory studies of model systems of GaON-modified TiO2 confirm the band gap reduction, high reducibility and ability to activate water. The highly efficient and stable systems of TiO2@GaON core-shell nanowires provide a deeper understanding and universal strategy for enhancing photoelectrochemical performance of photoanodes now available. </div>

One-Dimensional TiO2@GaON Core-Shell Nanowires with Controlled Shell Thickness from Atomic Layer Deposition for Stable and Efficient Photoelectrochemical Water Splitting

2019 ◽  
Author(s):  
Jiajia Tao ◽  
Hong-Ping Ma ◽  
Kaiping Yuan ◽  
Yang Gu ◽  
Jianwei Lian ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Band Gap ◽  
Water Splitting ◽  
Atomic Layer ◽  
Photoelectrochemical Water Splitting ◽  
Core Shell ◽  
Photoelectrochemical Performance ◽  
Highly Efficient ◽  
Layer Deposition ◽  
Shell Nanowires

<div>As a promising oxygen evolution reaction semiconductor, TiO2 has been extensively investigated for solar photoelectrochemical water splitting. Here, a highly efficient and stable strategy for rationally preparing GaON cocatalysts on TiO2 by atomic layer deposition is demonstrated, which we show significantly enhances the</div><div>photoelectrochemical performance compared to TiO2-based photoanodes. For TiO2@20 nm-GaON core-shell nanowires a photocurrent density up to 1.10 mA cm-2 (1.23 V vs RHE) under AM 1.5 G irradiation (100 mW cm-2) has been achieved, which is 14 times higher than that of TiO2 NWs. Furthermore, the oxygen vacancy formation on GaON as well as the band gap matching with TiO2 not only provides more active sites for water oxidation but also enhances light absorption to promote interfacial charge separation and migration. Density functional theory studies of model systems of GaON-modified TiO2 confirm the band gap reduction, high reducibility and ability to activate water. The highly efficient and stable systems of TiO2@GaON core-shell nanowires provide a deeper understanding and universal strategy for enhancing photoelectrochemical performance of photoanodes now available. </div>

scholarly journals Interface engineering of the photoelectrochemical performance of Ni-oxide-coated n-Si photoanodes by atomic-layer deposition of ultrathin films of cobalt oxide

2015 ◽  
Vol 8 (9) ◽  
pp. 2644-2649 ◽  
Author(s):  
Xinghao Zhou ◽  
Rui Liu ◽  
Ke Sun ◽  
Dennis Friedrich ◽  
Matthew T. McDowell ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Cobalt Oxide ◽  
Water Splitting ◽  
Ultrathin Films ◽  
High Performance ◽  
Atomic Layer ◽  
Interface Engineering ◽  
Photoelectrochemical Performance ◽  
Layer Deposition ◽  
Ni Oxide

Interfacial CoOxlayers provide a route to stable, high-performance Si photoanodes for water splitting, without requiring np+homojunctions.

Metallic Ni3S2 Films Grown by Atomic Layer Deposition as an Efficient and Stable Electrocatalyst for Overall Water Splitting

2018 ◽  
Vol 10 (15) ◽  
pp. 12807-12815 ◽  
Author(s):  
Thi Anh Ho ◽  
Changdeuck Bae ◽  
Hochul Nam ◽  
Eunsoo Kim ◽  
Seung Yong Lee ◽  
...  
Keyword(s):  
Atomic Layer Deposition ◽  
Water Splitting ◽  
Atomic Layer ◽  
Overall Water Splitting ◽  
Layer Deposition
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