scholarly journals Paving the road toward the use of β-Fe2O3 in solar water splitting: Raman identification, phase transformation and strategies for phase stabilization

2020 ◽  
Vol 7 (6) ◽  
pp. 1059-1067 ◽  
Author(s):  
Ningsi Zhang ◽  
Xin Wang ◽  
Jianyong Feng ◽  
Huiting Huang ◽  
Yongsheng Guo ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Water Splitting ◽  
Annealing Temperature ◽  
Solar Water ◽  
The Road ◽  
Solar Water Splitting ◽  
Phase Stabilization ◽  
First Time ◽  
Identification Phase ◽  
Fe2o3 Film

Abstract Although β-Fe2O3 has a high theoretical solar-to-hydrogen efficiency because of its narrow band gap, the study of β-Fe2O3 photoanodes for water splitting is elusive as a result of their metastable nature. Raman identification of β-Fe2O3 is theoretically and experimentally investigated in this study for the first time, thus clarifying the debate about its Raman spectrum in the literature. Phase transformation of β-Fe2O3 to α-Fe2O3 was found to potentially take place under laser and electron irradiation as well as annealing. Herein, phase transformation of β-Fe2O3 to α-Fe2O3 was inhibited by introduction of Zr doping, and β-Fe2O3 was found to withstand a higher annealing temperature without any phase transformation. The solar water splitting photocurrent of the Zr-doped β-Fe2O3 photoanode was increased by 500% compared to that of the pure β-Fe2O3 photoanode. Additionally, Zr-doped β-Fe2O3 exhibited very good stability during the process of solar water splitting. These results indicate that by improving its thermal stability, metastable β-Fe2O3 film is a promising photoanode for solar water splitting.

3.17% efficient Cu2ZnSnS4–BiVO4 integrated tandem cell for standalone overall solar water splitting

2021 ◽  
Author(s):  
Dingwang Huang ◽  
Kang Wang ◽  
Lintao Li ◽  
Kuang Feng ◽  
Na An ◽  
...  
Keyword(s):  
Water Splitting ◽  
Large Scale ◽  
Tandem Cell ◽  
Solar Water ◽  
Solar Water Splitting ◽  
First Time

3.17% efficient Cu2ZnSnS4–BiVO4 integrated tandem cell and a large scale 5 × 5 cm integrated CZTS–BiVO4 tandem device for standalone overall solar water splitting was assembled for the first time.

Ultrathin NiCo2O4 nanosheets with dual-metal active sites for enhanced solar water splitting of a BiVO4 photoanode

2019 ◽  
Vol 7 (39) ◽  
pp. 22274-22278 ◽  
Author(s):  
Chenchen Feng ◽  
Qi Zhou ◽  
Bin Zheng ◽  
Xiang Cheng ◽  
Yajun Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Dual Metal ◽  
Nico2o4 Nanosheets ◽  
First Time

Spinel-structured NiCo2O4 nanosheets with dual-metal active sites, an ultrathin structure, and abundant oxygen vacancies were decorated for the first time on a BiVO4 photoanode for highly efficient PEC water oxidation.

P5W30/g-C3N4 heterojunction thin film with improved photoelectrochemical performance for solar water splitting

2020 ◽  
Vol 44 (46) ◽  
pp. 20470-20478 ◽  
Author(s):  
Mozhde Yousefi ◽  
Hossein Eshghi ◽  
Mahdi Karimi-Nazarabad ◽  
Abolghasem Farhadipour
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Photoelectrochemical Performance ◽  
Solar Water ◽  
Solar Water Splitting ◽  
First Time

For the first time, to design a new photocatalyst, a Preyssler-type polyoxometalate was composited with g-C3N4 to improve its photoelectrochemical performance.

scholarly journals Nanostructured WO3 photoanodes for efficient water splitting via anodisation in citric acid

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35221-35227 ◽  
Author(s):  
Jifang Zhang ◽  
Ivette Salles ◽  
Sam Pering ◽  
Petra J. Cameron ◽  
Davide Mattia ◽  
...  
Keyword(s):  
Citric Acid ◽  
Water Splitting ◽  
Environmentally Friendly ◽  
Solar Water ◽  
Solar Water Splitting ◽  
First Time

We report the production of nanostructured WO3 photoanodes for solar water splitting produced via anodisation using for the first time citric acid, a safer and more environmentally friendly alternative to fluoride-based electrolytes.

An in situ photoelectroreduction approach to fabricate Bi/BiOCl heterostructure photocathodes: understanding the role of Bi metal for solar water splitting

2017 ◽  
Vol 5 (10) ◽  
pp. 4894-4903 ◽  
Author(s):  
Weiqiang Fan ◽  
Chunfa Li ◽  
Hongye Bai ◽  
Yanyan Zhao ◽  
Bifu Luo ◽  
...  
Keyword(s):  
Water Splitting ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Novel Method ◽  
First Time ◽  
Bi Nanoparticles ◽  
Pec Water Splitting

This paper presents for the first time a novel method of in situ depositing plasmonic Bi nanoparticles on BiOCl nanosheets (Bi/BiOCl) for PEC water splitting.

Characterizing surface states in hematite nanorod photoanodes, both beneficial and detrimental to solar water splitting efficiency

2020 ◽  
Vol 8 (39) ◽  
pp. 20513-20530
Author(s):  
Dana Stanescu ◽  
Mekan Piriyev ◽  
Victoria Villard ◽  
Cristian Mocuta ◽  
Adrien Besson ◽  
...  
Keyword(s):  
Water Splitting ◽  
Annealing Temperature ◽  
Direct Evidence ◽  
Surface States ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Ti Substitution

Direct evidence for reductive and oxidative surface states coexisting in hematite nanostructures is given by combined STXM and PEC measurements. The annealing temperature and Ti substitution balance the surface states, driving the PEC activity.

ZnO nanowire arrays decorated with PtO nanowires for efficient solar water splitting

2018 ◽  
Vol 8 (11) ◽  
pp. 2789-2793 ◽  
Author(s):  
Shurong Fu ◽  
Beibei Zhang ◽  
Hongyan Hu ◽  
Yajun Zhang ◽  
Yingpu Bi
Keyword(s):  
Water Splitting ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Zno Nanowire Arrays ◽  
First Time

Vertically-oriented PtO nanowires have been selectively grown on ZnO nanowire arrays for the first time by a light-controlled method and were utilized as highly efficient OER cocatalysts for remarkably enhancing the PEC performance of water splitting.

scholarly journals Bi2Fe4O9 thin films as novel visible-light-active photoanodes for solar water splitting

2019 ◽  
Vol 7 (16) ◽  
pp. 9537-9541 ◽  
Author(s):  
Yaqiong Wang ◽  
Matyas Daboczi ◽  
Camilo A. Mesa ◽  
Sinclair Ryley Ratnasingham ◽  
Ji-Seon Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Visible Light ◽  
Water Splitting ◽  
Water Oxidation ◽  
Faradaic Efficiency ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Visible Light Active ◽  
First Time

Photoelectrocatalytic water oxidation is reported for Bi2Fe4O9 for the first time with a faradaic efficiency of 82%.

A hydrophobic polymer stabilized p-Cu2O nanocrystal photocathode for highly efficient solar water splitting

2019 ◽  
Vol 7 (26) ◽  
pp. 15593-15598 ◽  
Author(s):  
Yang Li ◽  
Xiaolan Zhong ◽  
Kai Luo ◽  
Zongping Shao
Keyword(s):  
Water Splitting ◽  
Cuprous Oxide ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Hydrophobic Polymer ◽  
Hydrophobic Layer ◽  
Polymer Stabilized ◽  
First Time

For the first time, a compact hydrophobic layer composed of a macromolecular polymer was applied to inhibit the inactivation of cuprous oxide.

Efficient hydrogen evolution on (CuInS2)x(ZnS)1−x solid solution-based photocathodes under simulated sunlight

2019 ◽  
Vol 55 (4) ◽  
pp. 470-473 ◽  
Author(s):  
Jiao Zhao ◽  
Tsutomu Minegishi ◽  
Hiroyuki Kaneko ◽  
Guijun Ma ◽  
Miao Zhong ◽  
...  
Keyword(s):  
Thin Film ◽  
Solid Solution ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Simulated Sunlight ◽  
Solar Water ◽  
Solar Water Splitting ◽  
First Time

A thin film of (CuInS2)x(ZnS)1−x has been developed as a photocathode for solar water splitting for the first time.

Sign in / Sign up

Export Citation Format

Share Document