Rapid synthesis of ultralong Fe(OH)3:Cu(OH)2 core–shell nanowires self-supported on copper foam as a highly efficient 3D electrode for water oxidation

2016 ◽  
Vol 52 (100) ◽  
pp. 14470-14473 ◽  
Author(s):  
Chun-Chao Hou ◽  
Chuan-Jun Wang ◽  
Qian-Qian Chen ◽  
Xiao-Jun Lv ◽  
Wen-Fu Fu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Core Shell ◽  
Rapid Synthesis ◽  
Highly Efficient ◽  
Copper Foam ◽  
Shell Nanowires ◽  
3D Electrode

Ultralong Fe(OH)3:Cu(OH)2 core–shell nanowires were facilely grown on an open 3D Cu electrode to function as a highly efficient electrocatalyst for water oxidation.

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>

Highly efficient and durable water oxidation in a near-neutral carbonate electrolyte electrocatalyzed by a core–shell structured NiO@Ni–Ci nanosheet array

2017 ◽  
Vol 1 (6) ◽  
pp. 1287-1291 ◽  
Author(s):  
Min Ma ◽  
Yiwei Liu ◽  
Xiao Ma ◽  
Ruixiang Ge ◽  
Fengli Qu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Core Shell ◽  
Oxidation Activity ◽  
Highly Efficient ◽  
Nanosheet Array

Core–shell structured NiO@Ni–Ci/CC exhibits superior water oxidation activity, requiring 387 mV overpotential to drive 15 mA cm−2 in 1.0 M K–Ci.

Ni(OH)2 Coated CoMn-Layered Double Hydroxide Nanowires as Efficient Water Oxidation Electrocatalysts

2022 ◽  
Author(s):  
Xue Li ◽  
Komal Patil ◽  
Ashutosh Agarwal ◽  
Pravin Babar ◽  
Jun Sung Jang ◽  
...  
Keyword(s):  
Transition Metals ◽  
Layered Double Hydroxide ◽  
Noble Metal ◽  
Water Oxidation ◽  
Core Shell ◽  
Electrocatalytic Performance ◽  
Double Hydroxide ◽  
Shell Nanowires

Core-shell nanowires of first-row transition metals are important members of nanostructured electrocatalysts for water oxidation owing to their superior electrocatalytic performance and tremendous promise as substitutes for noble-metal-based electrocatalysts. Recently,...

In situ growth of α-Fe2O3@Co3O4 core–shell wormlike nanoarrays for a highly efficient photoelectrochemical water oxidation reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 1111-1122 ◽  
Author(s):  
Chunmei Li ◽  
Zhihui Chen ◽  
Weiyong Yuan ◽  
Qing-Hua Xu ◽  
Chang Ming Li
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Core Shell ◽  
In Situ Growth ◽  
Highly Efficient ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

α-Fe2O3@Co3O4 core–shell wormlike nanoarrays were fabricated via in situ growth of Co3O4 on wormlike α-Fe2O3, showing superior photoelectrochemical water oxidation performance.

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>

Cu2O@Fe–Ni3S2 nanoflower in situ grown on copper foam at room temperature as an excellent oxygen evolution electrocatalyst

2020 ◽  
Vol 56 (82) ◽  
pp. 12339-12342
Author(s):  
Li Li Wu ◽  
Yu Xian Yang ◽  
Xiao Hui Chen ◽  
Juan Luo ◽  
Hong Chuan Fu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Water Oxidation ◽  
Room Temperature ◽  
Core Shell ◽  
Copper Foam

A 3D/2D core–shell Cu2O@Fe–Ni3S2 nanoflower is prepared at room temperature through an etching precipitation strategy for enhanced electrochemical water oxidation.

A NiFe-Based Hierarchically Structured 3D Electrode by Hydrothermal Deposition for Highly Efficient Water Oxidation

2017 ◽  
Vol 247 ◽  
pp. 835-842 ◽  
Author(s):  
Weiqiang Tang ◽  
Shangshang Zuo ◽  
Jianying Wang ◽  
Yongli Mi ◽  
Zuofeng Chen
Keyword(s):  
Water Oxidation ◽  
Hydrothermal Deposition ◽  
Highly Efficient ◽  
3D Electrode

scholarly journals Nanostructured core–shell metal borides–oxides as highly efficient electrocatalysts for photoelectrochemical water oxidation

Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3121-3128 ◽  
Author(s):  
Can Lu ◽  
Palani R. Jothi ◽  
Thomas Thersleff ◽  
Tetyana M. Budnyak ◽  
Anna Rokicinska ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Core Shell ◽  
Highly Efficient ◽  
Metal Borides ◽  
Photoelectrochemical Water Oxidation

2D CoB nanosheets and FeB nanoplates were employed as catalysts for WO3 photoanodes. The functionalized photoanodes present meaningfully improved PEC water oxidation performances, exceeding Co-Bi- and Co(OH)x-modified WO3 photoanodes.

Highly efficient Pd-based core–shell nanowire catalysts for O2 dissociation

2014 ◽  
Vol 16 (38) ◽  
pp. 20532-20536 ◽  
Author(s):  
Yanxing Zhang ◽  
Zongxian Yang ◽  
Meng Wu
Keyword(s):  
Lower Price ◽  
Core Shell ◽  
Activation Barriers ◽  
The Core ◽  
Highly Efficient ◽  
The Stability ◽  
Shell Nanowires ◽  
O2 Dissociation

With the consideration of the stability and cost, we found that the Fe, Co, Ni, Cu, Ru, Ir atoms have lower price than the Pd and favor at the core even with O adatom at the surface. The formed M@Pd core–shell nanowires are active for O2 dissociation with activation barriers no larger than 0.25 eV.

Sign in / Sign up

Export Citation Format

Share Document