Ni-MOF in-situ Decorating ZnO photoelectrode for photoelectrochemical water splitting

2018 ◽  
Vol 11 (04) ◽  
pp. 1850085 ◽  
Author(s):  
Zhen Qian Liu ◽  
Kejia Qiu ◽  
Hongye Bai ◽  
Fagen Wang ◽  
Yilin Ge ◽  
...  
Keyword(s):  
Water Splitting ◽  
Chemical Etching ◽  
Photocurrent Density ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance ◽  
Co Catalyst ◽  
Etching Method ◽  
First Time

The Ni-MOF as co-catalyst has been in-situ introduced on the surface of ZnO photoelectrode by chemical etching method for the first time, and the unique organic/inorganic heterostructure (Ni-MOF/ZnO) was applied for photoelectrochemical water splitting. The Ni-MOF could work as special co-catalyst to improve the kinetic and charges separation of ZnO electrode, and the photocurrent density of Ni-MOF/ZnO has increased to about 1.8 times than that of bare ZnO. The IPCE value of Ni-MOF/ZnO has been enhanced up to 11% (355[Formula: see text]nm, 0.5[Formula: see text]V vs Ag/AgCl). The proposed mechanism of charges transfer has been also discussed in-depth, according to the photoelectrochemical performance.

Assembling of Bi atoms on TiO2 nanorods boosts photoelectrochemical water splitting of semiconductors

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4302-4308 ◽  
Author(s):  
Yajun Pang ◽  
Wenjie Zang ◽  
Zongkui Kou ◽  
Lei Zhang ◽  
Guangqing Xu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocurrent Density ◽  
Tio2 Nanorods ◽  
Photoelectrochemical Water Splitting ◽  
Co Catalyst ◽  
Pec Water Splitting

Atom-dispersed Bi metal along the TiO2 nanorods is properly designed as an efficiency co-catalyst to boost the photoelectrochemical (PEC) water splitting with a three-fold enhancement on photocurrent density.

scholarly journals Compact carbon nitride based copolymer films with controllable thickness for photoelectrochemical water splitting

2017 ◽  
Vol 5 (36) ◽  
pp. 19062-19071 ◽  
Author(s):  
Quan Gu ◽  
Xuezhong Gong ◽  
Qiaohui Jia ◽  
Jianni Liu ◽  
Ziwei Gao ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Light Harvesting ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance ◽  
Copolymer Films

Carbon nitride based copolymer films consisting of tri-s-triazines and s-triazines are in situ grown on various substrates and exhibit excellent photoelectrochemical performance, which is attributed to strong visible light harvesting transport.

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 Design an Epoxy Coating with TiO2/GO/PANI Nanocomposites for Enhancing Corrosion Resistance of Q235 Carbon Steel

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2629
Author(s):  
Shimin Chen ◽  
Bo Li ◽  
Rengui Xiao ◽  
Huanhu Luo ◽  
Siwu Yu ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Photocurrent Density ◽  
Photoelectrochemical Performance ◽  
Q235 Steel ◽  
Protective Barrier ◽  
Barrier Coating ◽  
Pani Composite ◽  
Steel Protection ◽  
Q235 Carbon Steel

In this work, a ternary TiO2/Graphene oxide/Polyaniline (TiO2/GO/PANI) nanocomposite was synthesized by in situ oxidation and use as a filler on epoxy resin (TiO2/GO/PANI/EP), a bifunctional in situ protective coating has been developed and reinforced the Q235 carbon steel protection against corrosion. The structure and optical properties of the obtained composites are characterized by XRD, FTIR, and UV–vis. Compared to bare TiO2 and bare Q235, the TiO2/GO/PANI/EP coating exhibited prominent photoelectrochemical properties, such as the photocurrent density increased 0.06 A/cm2 and the corrosion potential shifted from −651 mV to −851 mV, respectively. The results show that the TiO2/GO/PANI nanocomposite has an extended light absorption range and the effective separation of electron-hole pairs improves the photoelectrochemical performance, and also provides cathodic protection to Q235 steel under dark conditions. The TiO2/GO/PANI/EP coating can isolate the Q235 steel from the external corrosive environment, and may generally be regarded a useful protective barrier coating to metallic materials. When the TiO2/GO/PANI composite is dispersed in the EP, the compactness of the coating is improved and the protective barrier effect is enhanced.

Defective Fe3+ self-doped spinel ZnFe2O4 with oxygen vacancies for highly efficient photoelectrochemical water splitting

2019 ◽  
Vol 48 (31) ◽  
pp. 11934-11940 ◽  
Author(s):  
Jianmin Wang ◽  
Yunan Wang ◽  
Xinchao Xv ◽  
Yan Chen ◽  
Xi Yang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Vacancies ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance ◽  
Highly Efficient

Defective Fe3+ self-doped spinel ZnFe2O4 with abundant oxygen vacancies exhibits largely enhanced photoelectrochemical performance.

Cadmium sulfide Co-catalyst reveals the crystallinity impact of nickel oxide photocathode in photoelectrochemical water splitting

2019 ◽  
Vol 44 (37) ◽  
pp. 20851-20856 ◽  
Author(s):  
Yoshitaka Suzuki ◽  
Zhirun Xie ◽  
Xunyu Lu ◽  
Yoke Wang Cheng ◽  
Rose Amal ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Cadmium Sulfide ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Co Catalyst

Photoelectrochemical water splitting at low applied potential using a NiOOH coated codoped (Sn, Zr) α-Fe2O3 photoanode

2015 ◽  
Vol 3 (11) ◽  
pp. 5949-5961 ◽  
Author(s):  
Andebet Gedamu Tamirat ◽  
Wei-Nien Su ◽  
Amare Aregahegn Dubale ◽  
Hung-Ming Chen ◽  
Bing-Joe Hwang
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Applied Potential ◽  
Photoelectrochemical Performance ◽  
Onset Potential

We synthesized a NiOOH decorated codoped (Sn, Zr) α-Fe2O3 photoanode that results in enhanced photoelectrochemical performance and drastically lower onset potential.

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