Hand-in-hand quantum dot assembly sensitized photocathodes for enhanced photoelectrochemical hydrogen evolution

2019 ◽  
Vol 7 (45) ◽  
pp. 26098-26104
Author(s):  
Hao-Lin Wu ◽  
Xu-Bing Li ◽  
Yang Wang ◽  
Shuai Zhou ◽  
Ya-Jing Chen ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Quantum Dot ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Light Absorption ◽  
Better Than ◽  
Pec Water Splitting

A hand-in-hand QD assembly sensitized photocathode with extended light absorption and oriented charge transfer is established for enhanced PEC water splitting, which is comparable to or even better than those external cocatalyst-assisted systems.

Two photon tandem photoanode with black phosphorous quantum dot sensitized BiVO4 for solar water splitting

2022 ◽  
Author(s):  
Bingjun Jin ◽  
Yoonjun Cho ◽  
Cheolwoo Park ◽  
Jeehun Jeong ◽  
Sungsoon Kim ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Light Harvesting ◽  
Charge Recombination ◽  
Solar Water ◽  
Two Photon ◽  
Solar Water Splitting ◽  
Pec Water Splitting

The photoelectrochemical (PEC) water splitting efficiency is profoundly restricted by the limited light harvesting, rapid charge recombination, and sluggish water oxidation kinetics, in which the construction of a photoelectrode requires...

scholarly journals Efficient solar-driven water splitting by nanocone BiVO4-perovskite tandem cells

2016 ◽  
Vol 2 (6) ◽  
pp. e1501764 ◽  
Author(s):  
Yongcai Qiu ◽  
Wei Liu ◽  
Wei Chen ◽  
Wei Chen ◽  
Guangmin Zhou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Diffusion Length ◽  
Narrow Band ◽  
Low Cost ◽  
High Water ◽  
Hydrogen Electrode ◽  
Efficient Charge ◽  
Multiple Light Scattering ◽  
Pec Water Splitting

Bismuth vanadate (BiVO4) has been widely regarded as a promising photoanode material for photoelectrochemical (PEC) water splitting because of its low cost, its high stability against photocorrosion, and its relatively narrow band gap of 2.4 eV. However, the achieved performance of the BiVO4 photoanode remains unsatisfactory to date because its short carrier diffusion length restricts the total thickness of the BiVO4 film required for sufficient light absorption. We addressed the issue by deposition of nanoporous Mo-doped BiVO4 (Mo:BiVO4) on an engineered cone-shaped nanostructure, in which the Mo:BiVO4 layer with a larger effective thickness maintains highly efficient charge separation and high light absorption capability, which can be further enhanced by multiple light scattering in the nanocone structure. As a result, the nanocone/Mo:BiVO4/Fe(Ni)OOH photoanode exhibits a high water-splitting photocurrent of 5.82 ± 0.36 mA cm−2 at 1.23 V versus the reversible hydrogen electrode under 1-sun illumination. We also demonstrate that the PEC cell in tandem with a single perovskite solar cell exhibits unassisted water splitting with a solar-to-hydrogen conversion efficiency of up to 6.2%.

p-i-n Silicon Nanowire Array-NGQD: A Metal-Free Electrocatalyst for Photoelectrochemical Hydrogen Evolution

2021 ◽  
Author(s):  
Riyajuddin Sk ◽  
Sushil Kumar ◽  
Damini Badhwar ◽  
Shumile Ahmed Siddiqui ◽  
Jenifar Sultana ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Silicon Nanowire ◽  
Nanowire Array ◽  
Fuel Conversion ◽  
Metal Free ◽  
Silicon Nanowire Array ◽  
Pec Water Splitting

Photoelectrochemical (PEC) water splitting is the most promising approach for the realization of efficient solar-to-fuel conversion. However, the biggest challenge is the development of efficient photoelectrodes with active, durable and...

Silicon Nanowire-Ta2O5-NGQD Heterostructure: An Efficient Photocathode for Photoelectrochemical Hydrogen Evolution

2021 ◽  
Author(s):  
Sk. Riyajuddin ◽  
Jenifar Sultana ◽  
Shumile Ahmed Siddiqui ◽  
Sushil Kumar ◽  
Damini Badhwar ◽  
...  
Keyword(s):  
Solar Energy ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Large Scale ◽  
Silicon Nanowire ◽  
Research Interest ◽  
Hydrogen Fuel ◽  
Environment Friendly ◽  
Pec Water Splitting

Photoelectrochemical (PEC) water splitting propels a broader research interest for large-scale and facile entrapment of solar energy in hydrogen fuel. It offers the most favorable and environment-friendly approach to harvest...

ZnO photoelectrode simultaneously modified with Cu2O and Co-Pi based on broader light absorption and efficiently photogenerated carrier separation

2018 ◽  
Vol 5 (10) ◽  
pp. 2571-2578 ◽  
Author(s):  
Chonghao Ma ◽  
Zhifeng Liu ◽  
Qijun Cai ◽  
Changcun Han ◽  
Zhengfu Tong
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Photogenerated Carrier ◽  
Carrier Separation ◽  
Pec Water Splitting

A ZnO/Cu2O/Co-Pi photoelectrode is applied in PEC water splitting, improving the light absorption and photogenerated carrier separation.

A precious metal-free solar water splitting cell with a bifunctional cobalt phosphide electrocatalyst and doubly promoted bismuth vanadate photoanode

2018 ◽  
Vol 6 (3) ◽  
pp. 1266-1274 ◽  
Author(s):  
Jin Hyun Kim ◽  
Suenghoon Han ◽  
Yim Hyun Jo ◽  
Yunji Bak ◽  
Jae Sung Lee
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
Precious Metal ◽  
Precious Metals ◽  
Metal Free ◽  
Solar Water Splitting ◽  
Cobalt Phosphide ◽  
Earth Abundant ◽  
Pec Water Splitting

A bifunctional cobalt phosphide (CoP) electrocatalyst is applied to a doubly promoted BiVO4 photoanode as an oxygen evolution as well as to a cathode as a hydrogen evolution reaction (HER) catalyst to establish a photoelectrochemical (PEC) water splitting cell made of only earth abundant elements without any precious metals.

Three-Dimensional Carbonaceous Aerogels Embedded with Rh-SrTiO3 for Enhanced Hydrogen Evolution Triggered by Efficient Charge Transfer and Light Absorption

2020 ◽  
Vol 3 (12) ◽  
pp. 12134-12147
Author(s):  
Ashish Kumar ◽  
Vempuluru Navakoteswara Rao ◽  
Ajay Kumar ◽  
Aamir Mushtaq ◽  
Lalita Sharma ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Hydrogen Evolution ◽  
Light Absorption ◽  
Three Dimensional ◽  
Efficient Charge

scholarly journals Plasmonic nanoparticle-semiconductor composites for efficient solar water splitting

2016 ◽  
Vol 4 (46) ◽  
pp. 17891-17912 ◽  
Author(s):  
M. Valenti ◽  
M. P. Jonsson ◽  
G. Biskos ◽  
A. Schmidt-Ott ◽  
W. A. Smith
Keyword(s):  
Charge Transfer ◽  
Water Splitting ◽  
Light Absorption ◽  
Plasmonic Nanoparticle ◽  
Solar Water ◽  
Solar Water Splitting

Review of plasmonic nanoparticle effects on the semiconductors' light absorption, charge transfer and energetics for efficient solar water splitting.

The synergistic role with photosensitivity effect and extended space charge region on inorganic-organic WO3/PANI photoanode for efficient PEC water splitting

2021 ◽  
Author(s):  
Zhichao Hao ◽  
Mengnan Ruan ◽  
Zhengang Guo ◽  
Weiguo Yan ◽  
Xiangfeng Wu ◽  
...  
Keyword(s):  
Space Charge ◽  
Water Splitting ◽  
Space Charge Region ◽  
Light Absorption ◽  
Extended Space ◽  
Carrier Separation ◽  
Pec Water Splitting

The predicaments of poor carrier separation and light absorption need be overcome in order to maximize the preeminent performances of WO3 in photoelectrochemical (PEC) water splitting. Hence, we firstly prepared...

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