scholarly journals TiO2 Nanosheet Arrays with Layered SnS2 and CoOx Nanoparticles for Efficient Photoelectrochemical Water Splitting

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Zhou Cao ◽  
Yanling Yin ◽  
Peng Fu ◽  
Dong Li ◽  
Yulan Zhou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Environmental Issues ◽  
Charge Carriers ◽  
Oxidation Catalyst ◽  
Hydrogen Fuel ◽  
Nanosheet Array ◽  
Nanosheet Arrays ◽  
Global Energy Supply ◽  
Pec Water Splitting

Abstract Converting solar energy into sustainable hydrogen fuel by photoelectrochemical (PEC) water splitting is a promising technology to solve increasingly serious global energy supply and environmental issues. However, the PEC performance based on TiO2 nanomaterials is hindered by the limited sunlight-harvesting ability and its high recombination rate of photogenerated charge carriers. In this work, layered SnS2 absorbers and CoOx nanoparticles decorated two-dimensional (2D) TiO2 nanosheet array photoelectrode have been rationally designed and successfully synthesized, which remarkably enhanced the PEC performance for water splitting. As the result, photoconversion efficiency of TiO2/SnS2/CoOx and TiO2/SnS2 hybrid photoanodes increases by 3.6 and 2.0 times under simulated sunlight illumination, compared with the bare TiO2 nanosheet arrays photoanode. Furthermore, the TiO2/SnS2/CoOx photoanode also presented higher PEC stability owing to CoOx catalyst served as efficient water oxidation catalyst as well as an effective protectant for preventing absorber photocorrosion.

scholarly journals Photoelectrochemical solar water splitting: From basic principles to advanced devices

2018 ◽  
Vol 2 ◽  
pp. BDJOC3 ◽  
Author(s):  
Bandar Y. Alfaifi ◽  
Habib Ullah ◽  
Sulaiman Alfaifi ◽  
Asif A. Tahir ◽  
Tapas K. Mallick
Keyword(s):  
Water Splitting ◽  
Light Harvesting ◽  
Charge Carriers ◽  
Hydrogen Fuel ◽  
Basic Principles ◽  
Co Catalysts ◽  
Solar Water Splitting ◽  
Electrode Degradation ◽  
Remarkable Progress ◽  
Pec Water Splitting

Abstract Photoelectrochemical water splitting (PEC) offers a promising path for sustainable generation of hydrogen fuel. However, improving solar fuel water splitting efficiency facing tremendous challenges, due to the energy loss related to fast recombination of the photogenerated charge carriers, electrode degradation, as well as limited light harvesting. This review focuses on the brief introduction of basic fundamental of PEC water splitting and the concept of various types of water splitting approaches. Numerous engineering strategies for the investgating of the higher efficiency of the PEC, including charge separation, light harvesting, and co-catalysts doping, have been discussed. Moreover, recent remarkable progress and developments for PEC water splitting with some promising materials are discussed. Recent advanced applications of PEC are also reviewed. Finally, the review concludes with a summary and future outlook of this hot field.

Iron and Nitrogen Co-doped CoSe2 Nanosheet Arrays for Robust Electrocatalytic Water Oxidation

2021 ◽  
Author(s):  
Di Li ◽  
Yingying Xing ◽  
Changjian Zhou ◽  
Yikai Lu ◽  
Shengjie Xu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Energy Barrier ◽  
Large Scale ◽  
Scale Production ◽  
Reaction Energy ◽  
Large Scale Production ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen ◽  
Co Doped

The high reaction energy barrier of the oxygen evolution reaction (OER) extremely reduces the efficiency of water splitting, which is not conducive to large-scale production of hydrogen. Due to the...

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 Stabilization of a molecular water oxidation catalyst on a dye−sensitized photoanode by a pyridyl anchor

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong Zhu ◽  
Degao Wang ◽  
Qing Huang ◽  
Jian Du ◽  
Licheng Sun ◽  
...  
Keyword(s):  
Water Splitting ◽  
Phosphonic Acid ◽  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Molecular Water ◽  
Applied Bias ◽  
Surface Loading ◽  
Dye Sensitized ◽  
Monomeric Structure ◽  
Molecular Catalysts

Abstract Understanding and controlling the properties of water-splitting assemblies in dye-sensitized photoelectrosynthesis cells is a key to the exploitation of their properties. We demonstrate here that, following surface loading of a [Ru(bpy)3]2+ (bpy = 2,2′-bipyridine) chromophore on nanoparticle electrodes, addition of the molecular catalysts, Ru(bda)(L)2 (bda  =  2,2′-bipyridine-6,6′-dicarboxylate) with phosphonate or pyridyl sites for water oxidation, gives surfaces with a 5:1 chromophore to catalyst ratio. Addition of the surface-bound phosphonate derivatives with L = 4-pyridyl phosphonic acid or diethyl 3-(pyridin-4-yloxy)decyl-phosphonic acid, leads to well-defined surfaces but, following oxidation to Ru(III), they undergo facile, on-surface dimerization to give surface-bound, oxo-bridged dimers. The dimers have a diminished reactivity toward water oxidation compared to related monomers in solution. By contrast, immobilization of the Ru-bda catalyst on TiO2 with the 4,4′-dipyridyl anchoring ligand can maintain the monomeric structure of catalyst and gives relatively stable photoanodes with photocurrents that reach to 1.7 mA cm−2 with an optimized, applied bias photon-to-current efficiency of 1.5%.

Triple hierarchy and double synergies of NiFe/Co9S8/carbon cloth: a new and efficient electrocatalyst for the oxygen evolution reaction

Nanoscale ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 3378-3385 ◽  
Author(s):  
Changhong Zhan ◽  
Zheng Liu ◽  
Yang Zhou ◽  
Mingliang Guo ◽  
Xiaolin Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Oxidation Catalyst ◽  
Carbon Cloth ◽  
Electrochemical Water Splitting

Electrochemical water splitting requires an efficient water oxidation catalyst to accelerate the oxygen evolution reaction (OER).

scholarly journals Hybrid TaON/LaTiO2N photoelectrode for water oxidation

2019 ◽  
Vol 1 (3) ◽  
pp. 212-219 ◽  
Author(s):  
Pengda An ◽  
Baopeng Yang ◽  
Ning Zhang ◽  
Hongmei Li ◽  
Min Liu
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Counter Electrode ◽  
Applied Bias ◽  
Microwave Assisted ◽  
Particle Transfer ◽  
Microwave Assisted Method ◽  
Pec Water Splitting

Abstract Efficient and stable photoelectrodes for water oxidation are highly desirable in the field of photoelectrochemical (PEC) water splitting. However, photoelectrodes with low externally applied bias usually exhibit weak photocurrent and vice versa. Herein, novel and efficient CoOx-TaON/LTON composite photoanodes have been successfully prepared by a microwave assisted method followed with a particle transfer procedure. The obtained photoanode generated an anodic photocurrent of ~7.2 mA cm−2 at 1.2 VRHE and initiated the anodic photourrent at ~0.5 VRHE. The HC-STH of the composite photoelectrode reached 1.0% at 1.2 VRHE. Further, stoichiometric oxygen and hydrogen are stably produced on the photoanode and the counter electrode with a Faraday efficiency of unity for 2 h.

Nanoporous NiAl-LDH nanosheet arrays with optimized Ni active sites for efficient electrocatalytic alkaline water splitting

2020 ◽  
Vol 4 (6) ◽  
pp. 2850-2858 ◽  
Author(s):  
Liangliang Feng ◽  
Yingying Du ◽  
Jianfeng Huang ◽  
Liyun Cao ◽  
Li Feng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Active Sites ◽  
Alkaline Water ◽  
Nanosheet Array ◽  
Nanosheet Arrays

A novel nanoporous NiAl-LDH nanosheet array with optimized Ni active sites is prepared for efficient electrocatalytic alkaline water splitting.

New strategy to incorporate nano-particle sized water oxidation catalyst into dye-sensitized photoelectrochemical cell for water splitting

2016 ◽  
Vol 25 (3) ◽  
pp. 345-348 ◽  
Author(s):  
Peicheng Wei ◽  
Bo Hu ◽  
Li Zhou ◽  
Ting Su ◽  
Yong Na
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Photoelectrochemical Cell ◽  
Oxidation Catalyst ◽  
Nano Particle ◽  
Dye Sensitized ◽  
New Strategy

A visible light water-splitting cell with a photoanode formed by codeposition of a high-potential porphyrin and an iridium water-oxidation catalyst

2011 ◽  
Vol 4 (7) ◽  
pp. 2389 ◽  
Author(s):  
Gary F. Moore ◽  
James D. Blakemore ◽  
Rebecca L. Milot ◽  
Jonathan F. Hull ◽  
Hee-eun Song ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Water Oxidation ◽  
High Potential ◽  
Oxidation Catalyst ◽  
Light Water

Anisotropic Photoelectrochemical (PEC) Performances of ZnO Single-Crystalline Photoanode: Effect of Internal Electrostatic Fields on the Separation of Photogenerated Charge Carriers during PEC Water Splitting

2016 ◽  
Vol 28 (18) ◽  
pp. 6613-6620 ◽  
Author(s):  
Bo Zhang ◽  
Zeyan Wang ◽  
Baibiao Huang ◽  
Xiaoyang Zhang ◽  
Xiaoyan Qin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Charge Carriers ◽  
Single Crystalline ◽  
Electrostatic Fields ◽  
Pec Water Splitting
Sign in / Sign up

Export Citation Format

Share Document