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 New aspects of improving the performance of WO3 thin films for photoelectrochemical water splitting by tuning the ultrathin depletion region

RSC Advances ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 899-905 ◽  
Author(s):  
Jiajie Cen ◽  
Qiyuan Wu ◽  
Danhua Yan ◽  
Wenrui Zhang ◽  
Yue Zhao ◽  
...  
Keyword(s):  
Thin Films ◽  
Water Splitting ◽  
High Performance ◽  
Depletion Region ◽  
Photoelectrochemical Water Splitting ◽  
Surface Modulation ◽  
Wo3 Thin Films

Surface modulation approach offers an effective and scalable method for high-performance WO3 photoanodes.

A facile spray pyrolysis method to prepare Ti-doped ZnFe2O4 for boosting photoelectrochemical water splitting

2017 ◽  
Vol 5 (16) ◽  
pp. 7571-7577 ◽  
Author(s):  
Yongsheng Guo ◽  
Ningsi Zhang ◽  
Xin Wang ◽  
Qinfeng Qian ◽  
Shiying Zhang ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
Water Splitting ◽  
High Performance ◽  
Photoelectrochemical Water Splitting ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method

A facile spray pyrolysis method was used to prepare high-performance Ti-doped ZnFe2O4 for boosting photoelectrochemical 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.

Bi3TaO7 film: a promising photoelectrode for photoelectrochemical water splitting

2020 ◽  
Vol 49 (1) ◽  
pp. 147-155 ◽  
Author(s):  
Qinggong Song ◽  
Peidong Wu ◽  
Samrat Sarkar ◽  
Yufeng Zhao ◽  
Zhifeng Liu
Keyword(s):  
Transition Metal ◽  
Transport Properties ◽  
Water Splitting ◽  
Carrier Transport ◽  
Photoelectrochemical Water Splitting ◽  
Visible Absorption ◽  
Unique Structure ◽  
Bismuth Salts ◽  
Carrier Transport Properties

Most of the transition metal bismuth salts have excellent visible absorption range and carrier transport properties due to their unique structure capable of orbits and s–p bonds.

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