Nanoniobia Modification of CdS Photoanode for an Efficient and Stable Photoelectrochemical Cell

Langmuir ◽  
2014 ◽  
Vol 30 (51) ◽  
pp. 15540-15549 ◽  
Author(s):  
Alka Pareek ◽  
Pradip Paik ◽  
Pramod H. Borse
Keyword(s):  
Photoelectrochemical Cell

Enzyme Assisted Reforming of Glucose to Hydrogen in a Photoelectrochemical Cell

2005 ◽  
Author(s):  
Michael Hambourger ◽  
Alicia Brune ◽  
Devens Gust ◽  
Ana L. Moore ◽  
Thomas A. Moore
Keyword(s):  
Photoelectrochemical Cell

A silicon-based hybrid photocathode modified with an N5-chelated nickel catalyst in a noble-metal-free biomimetic photoelectrochemical cell for solar-driven unbiased overall water splitting

2021 ◽  
Author(s):  
Lunlun Gong ◽  
Peili Zhang ◽  
Guoquan Liu ◽  
Yu Shan ◽  
Mei Wang
Keyword(s):  
Water Splitting ◽  
Nickel Catalyst ◽  
Noble Metal ◽  
Photoelectrochemical Cell ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Redox Catalysts ◽  
Silicon Based ◽  
Modification Of The Surface

Modification of the surface of semiconductor-based photoelectrodes with molecular redox catalysts gives a way to realize atom-efficient catalysis for photoelectrochemical (PEC) H2 and O2 evolution. However, the diversity of immobilized...

A promising ternary sulfide bidirectional p-n heterojunction for unassisted tandem photoelectrochemical cell

2021 ◽  
Author(s):  
Hongxia Qian ◽  
Zhifeng Liu ◽  
Zhengang Guo ◽  
Mengnan Ruan ◽  
Weiguo Yan
Keyword(s):  
High Efficiency ◽  
Hot Spot ◽  
Low Cost ◽  
Photoelectrochemical Cell ◽  
Ternary Sulfide

Investigating high-efficiency, low-cost and abundant photoelectrode materials has always been a hot spot for researchers to attention in photoelectrochemical (PEC) system. Here we firstly study the PEC performance of ternary...

scholarly journals Simple eco-friendly synthesis of the surfactant free SnS nanocrystal toward the photoelectrochemical cell application

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiaoguang Huang ◽  
Heechul Woo ◽  
Peinian Wu ◽  
Hyo Jin Hong ◽  
Wan Gil Jung ◽  
...  
Keyword(s):  
Photoelectrochemical Cell

A stable dye-sensitised photoelectrochemical cell

1986 ◽  
Vol 19 (9) ◽  
pp. L191-L194 ◽  
Author(s):  
K Tennakone ◽  
C A N Fernando ◽  
M Dewasurendra ◽  
M S Kariapper
Keyword(s):  
Photoelectrochemical Cell

Electrodeposited Thin Conformal TiO2 Coating Enabling Stable Operation of BiVO4 Photoanodes in Basic Media

2018 ◽  
Vol MA2018-01 (31) ◽  
pp. 1917-1917
Author(s):  
Dongho Lee ◽  
Kyoung-Shin Choi
Keyword(s):  
Oxygen Evolution ◽  
Water Oxidation ◽  
Synthesis Method ◽  
Protective Layer ◽  
Photoelectrochemical Cell ◽  
Semiconductor Surface ◽  
Stable Operation ◽  
Solar Water Splitting ◽  
Wide Range ◽  
Basic Solutions

Producing hydrogen via solar water splitting using a photoelectrochemical cell (PEC) persists as one of the most exciting research topics in the field of solar fuels. The construction of efficient PECs requires the integration of multiple components including a photoanode, a photocathode, an oxygen evolution catalyst, and a hydrogen evolution catalyst. Therefore, the compatibility and stability of all of these elements in a given operating condition are crucial. When the stability of a semiconductor electrode used as the photoanode or photocathode is limited in an acidic or basic condition which is optimum for the operation of the other components, a thin protective layer has been deposited on the semiconductor surface to prevent its chemical dissolution. Surface coating of a thin and conformal TiO2 layer has been proven to be successful for protecting photoelectrodes since TiO2 is chemically and electrochemically stable in a wide range of pH conditions under both anodic and cathodic conditions. In order to prevent the semiconductor surface from coming into direct contact with the corrosive electrolyte, complete coverage of the photoelectrode with TiO2 is required. At the same time, the TiO2 layer should be thin enough not to interfere with the charge transport properties of the photoelectrode. As a result, atomic layer deposition (ALD) has been the only successful tool used to date to produce an effective protective layer. However, the slow processing time and economic viability of ALD methods motivated us to develop an inexpensive and facile solution-based synthesis method for the deposition of high quality TiO2 coating layers. In this presentation, we report a new electrochemical method to deposit a thin and conformal TiO2 layer on nanoporous BiVO4 that has an intricate, high surface area morphology. BiVO4 is a promising n-type photoanode material with a relatively low bandgap (2.4~2.5 eV). However, its usage has been limited to neutral and mildly basic conditions (pH 5~9) because it is chemically unstable in strongly acidic and basic conditions. Our method allows for the deposition of a 5~6 nm thick TiO2 layer on BiVO4 within 1 min and the resulting BiVO4/TiO2 electrodes exhibit chemical stability in basic solutions (pH 12~13). Sulfite oxidation measurements of BiVO4 and BiVO4/TiO2 electrodes show that the thin TiO2 protective layer does not significantly reduce the hole transfer to the electrolyte. Finally, we demonstrate the photoelectrochemical stability of the BiVO4/TiO2 electrode for photoelectrochemical water oxidation in basic solutions by coupling the BiVO4/TiO2 electrode with appropriate oxygen evolution catalysts.

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