Nanoporous BiVO4 nanoflake array photoanode for efficient photoelectrochemical water splitting

CrystEngComm ◽  
2020 ◽  
Vol 22 (11) ◽  
pp. 1914-1921 ◽  
Author(s):  
Jingjing Wang ◽  
Canjun Liu ◽  
Yang Liu ◽  
Shu Chen
Keyword(s):  
Water Splitting ◽  
Photoelectrochemical Water Splitting ◽  
High Quality ◽  
Photoelectrochemical Activity ◽  
Transformation Approach

A high-quality nanoporous BiVO4 nanoflake array photoanode was prepared by using an in situ transformation approach, which exhibited an excellent photoelectrochemical activity.

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 Stabilization of GaAs photoanodes by in situ deposition of nickel-borate surface catalysts as hole trapping sites

2019 ◽  
Vol 3 (3) ◽  
pp. 814-822 ◽  
Author(s):  
Chaoran Jiang ◽  
Jiang Wu ◽  
Savio J. A. Moniz ◽  
Daqian Guo ◽  
Mingchu Tang ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Water Splitting ◽  
Molecular Beam ◽  
Photoelectrochemical Water Splitting ◽  
Hole Trapping ◽  
In Situ Deposition ◽  
Trapping Sites

A nanocomposite Ni–B/Ga(As)Ox/GaAs photoanode fabricated by combining molecular beam epitaxy with in situ photoassisted electrodeposition enables efficient and stable photoelectrochemical water splitting.

scholarly journals Facile Growth of Porous Hematite Films for Photoelectrochemical Water Splitting

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Shaohua Shen ◽  
Jiangang Jiang ◽  
Penghui Guo ◽  
Liejin Guo
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Carrier Transport ◽  
Photoelectrochemical Water Splitting ◽  
Photon Absorption ◽  
Photoelectrochemical Activity ◽  
Simple Method ◽  
Facile Fabrication ◽  
Single Precursor ◽  
Interfacial Charge

We introduced a simple fabrication method of porous hematite films with tunable thickness in an aqueous solution containing FeCl3as the single precursor. We demonstrated that the optimized thickness was necessary for high performance photoelectrochemical water splitting, by balancing photon absorption and charge carrier transport. The highest photocurrent ofca. 0.15 mA cm−2at 1.0 V versus Ag/AgCl was achieved on the 300 nm thick porous hematite film as photoanode, with IPCE at 370 nm and 0.65 V versus Ag/AgCl to be 9.0%. This simple method allows the facile fabrication of hematite films with porous nanostructure for enabling high photon harvesting efficiency and maximized interfacial charge transfer. These porous hematite films fabricated by this simple solution-based method could be easily modified by metal doping for further enhanced photoelectrochemical activity for water splitting.

scholarly journals Efficient Photoelectrochemical Water Splitting Reaction Using Electrodeposited Co3Se4 Catalys

2018 ◽  
Author(s):  
Yelyn Sim ◽  
Jude John ◽  
Subramani Surendran ◽  
Byeolee Moon ◽  
Uk Sim
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
Noble Metal ◽  
Effective Area ◽  
Research Area ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Activity ◽  
One Pot ◽  
Noble Metal Catalysts ◽  
Highly Efficient

Photoelectrochemical water splitting is a promising field for sustainable energy production using hydrogen. Development of efficient catalysts is essential for resourceful hydrogen production. The most efficient catalysts reported to date have been extremely precious rare-earth metals. One of the biggest hurdles in this research area is the difficulty of developing highly efficient catalysts comparable to the noble metal catalysts. Here, we report that non-noble metal dichalcogenide (Co3Se4) catalysts made using a facile one-pot electrodeposition method, showed highly efficient photoelectrochemical activity on a Si photocathode. To enhance light collection and enlarge its surface area even further, we implemented surface nano-structuring on the Si surface. The nano-structured Si photoelectrode has an effective area greater than that of planar silicon and a wider absorption spectrum. Consequently, this approach exhibits reduced overvoltage as well as increased photo-catalytic activity. Such results show the importance of controlling the optimized interface between the surface structure of the photoelectrode and the electrodeposited co-catalyst on it to improve catalytic activity. This should enable other electrochemical reactions in a variety of energy conversion systems.

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