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.

g-C3N4/TiO2 composite microspheres: in situ growth and high visible light catalytic activity

CrystEngComm ◽  
2020 ◽  
Vol 22 (42) ◽  
pp. 7104-7112
Author(s):  
Kangkai Hu ◽  
Lei E ◽  
Chaoyang Hu ◽  
Dan Zhao ◽  
Mengyao Zhu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Catalytic Activity ◽  
Visible Light ◽  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
Photocatalytic Properties ◽  
In Situ Growth ◽  
Composite Microspheres ◽  
Visible Light Photocatalytic

The g-C3N4/TiO2 heterojunction, possessing a 3D flower-like self-assembled morphology, realizing excellent visible-light photocatalytic properties, is a photocatalyst for wastewater treatment or a photoanode for photoelectrochemical water splitting.

In situ textured carbon nitride photoanodes with enhanced photoelectrochemical activity by band-gap state modulation

2020 ◽  
Vol 8 (45) ◽  
pp. 24005-24012
Author(s):  
Miaoyan Huang ◽  
Haipeng Wang ◽  
Wan Li ◽  
Yan-Ling Zhao ◽  
Rui-Qin Zhang
Keyword(s):  
Charge Carrier ◽  
Band Gap ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Activity ◽  
Carrier Separation ◽  
Gap State

As promising photoelectrodes in photoelectrochemical water splitting cells, the photoelectrochemical activity of oxygen-doped CN films can be enhanced by a band-gap state modulation strategy to effectively improve the charge carrier separation.

scholarly journals Laser Induced Anchoring of Nickel Oxide Nanoparticles on Polymeric Graphitic Carbon Nitride Sheets Using Pulsed Laser Ablation for Efficient Water Splitting under Visible Light

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1098 ◽  
Author(s):  
Umair Baig ◽  
Abuzar Khan ◽  
Mohammad A. Gondal ◽  
Mohamed A. Dastageer ◽  
Wail S. Falath
Keyword(s):  
Laser Ablation ◽  
Visible Light ◽  
Nickel Oxide ◽  
Band Gap ◽  
Water Splitting ◽  
Carbon Nitride ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Photocurrent Density ◽  
Photoelectrochemical Performance

A visible-light-active nickel oxide–graphitic carbon nitride (NiO@g-CN) hetero-structured nanocomposite was synthesized for the first time by pulsed laser ablation in liquid and used as a photoanode material in photoelectrochemical water-splitting reaction with a solar simulator. It was found that the photoelectrochemical performance of PLAL synthesized NiO@g-CN nanocomposite as photoanode, compared to g-CN as photoanode showed fourfold enhancements in photocurrent density under visible light. FT-IR, XRD, FE-SEM, and EDX consistently showed the proper anchoring of nano-sized NiO on g-CN. UV-DRS and the band gap estimation showed the narrowing down of the band gap energy and consequent enhancement in the visible-light absorption, whereas photoluminescence spectroscopy confirmed the reduction of the recombination of photo-excited electron hole pairs as a result of the anchoring of NiO on g-CN. The photoelectrochemical performance of g-CN and the NiO@g-CN nanocomposite photoanodes was compared by linear sweep voltammetry (LSV), Chronoamperometry (I-t), and Electrochemical Impedance Spectroscopy (EIS). All of these results of the characterization studies account for the observed fourfold enhancement of photocurrent density of NiO@g-CN nanocomposite as photoanode in the photoelectrochemical reaction.

scholarly journals Enhanced charge separation in g-C3N4–BiOI heterostructures for visible light driven photoelectrochemical water splitting

2019 ◽  
Vol 1 (4) ◽  
pp. 1460-1471 ◽  
Author(s):  
Kazi M. Alam ◽  
Pawan Kumar ◽  
Piyush Kar ◽  
Ujwal K. Thakur ◽  
Sheng Zeng ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Charge Separation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Photoelectrochemical Water Splitting ◽  
Graphitic Carbon Nitride ◽  
Low Bandgap ◽  
Visible Light Driven

Heterojunctions of the low bandgap semiconductor bismuth oxyiodide (BiOI) with bulk multilayered graphitic carbon nitride (g-C3N4) and few layered graphitic carbon nitride sheets (g-C3N4-S) are synthesized and investigated as an active photoanode material for sunlight driven water splitting.

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.

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>

Carrier Engineering of Zr-mediated Ta3N5 Film as Efficient Photoanode for Solar Water Splitting

2021 ◽  
Author(s):  
Xin Zou ◽  
Xueyang Han ◽  
Chengxiong Wang ◽  
Yunkun Zhao ◽  
Chun Du ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Photoelectrochemical Water Splitting ◽  
Promising Candidate ◽  
Visible Light Absorption ◽  
Solar Water ◽  
Solar Water Splitting

Ta3N5 is regarded as a promising candidate material with adequate visible light absorption and band structure for photoelectrochemical water splitting. However, the performance of Ta3N5 is severely limited by the...

Photocatalytic degradation of tetracycline under visible light using TiO2@sulfur doped carbon nitride nanocomposite synthesized via in-situ method

2021 ◽  
Vol 9 (4) ◽  
pp. 105560
Author(s):  
Krishnan Divakaran ◽  
Amanulla Baishnisha ◽  
Vellaichamy Balakumar ◽  
Krishnan Nattamai Perumal ◽  
Chandran Meenakshi ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Carbon Nitride ◽  
In Situ Method
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