Discovering a selective semimetal element to increase hematite photoanode charge separation efficiency

2019 ◽  
Vol 7 (28) ◽  
pp. 16992-16998 ◽  
Author(s):  
André Esteves Nogueira ◽  
Mario Rodrigo Santos Soares ◽  
João Batista Souza Junior ◽  
Carlos Alberto Ospina Ramirez ◽  
Flavio Leandro Souza ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Deposition Process ◽  
Colloidal Deposition ◽  
Charge Separation Efficiency

A colloidal deposition process combined with the thermal spreading ability of Sb over hematite surface is used to obtain a mesoporous photoanode for water oxidation.

Rational design of light induced self healed Fe based oxygen vacancy rich CeO2 (CeO2NS–FeOOH/Fe2O3) nanostructure materials for photocatalytic water oxidation and Cr(vi) reduction

2018 ◽  
Vol 6 (24) ◽  
pp. 11377-11389 ◽  
Author(s):  
S. Sultana ◽  
S. Mansingh ◽  
K. M. Parida
Keyword(s):  
Oxygen Vacancy ◽  
Visible Light ◽  
Water Oxidation ◽  
Charge Separation ◽  
Rational Design ◽  
Separation Efficiency ◽  
Nanostructure Materials ◽  
Charge Separation Efficiency ◽  
Uv Visible

Self regenerating oxygen vacancy rich CeO2NS–FeOOH/Fe2O3 hybrids are optimized and show superior charge separation efficiency both in visible and UV-visible light.

Carbon quantum dot sensitized integrated Fe2O3@g-C3N4 core–shell nanoarray photoanode towards highly efficient water oxidation

2018 ◽  
Vol 6 (21) ◽  
pp. 9839-9845 ◽  
Author(s):  
Sha-Sha Yi ◽  
Jun-Min Yan ◽  
Qing Jiang
Keyword(s):  
Quantum Dot ◽  
Water Oxidation ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Core Shell ◽  
High Catalytic Activity ◽  
Carbon Quantum Dot ◽  
Efficient Charge ◽  
Oxidation Performance ◽  
Charge Separation Efficiency

The carbon quantum dot (CQD) sensitized integrated Ti:Fe2O3@g-C3N4 core–shell nanoarrays demonstrate superior PEC water oxidation performance which can be ascribed to efficient charge separation efficiency derived from the well-confined heterojunction structure together with the high catalytic activity of the CQDs for H2O2 decomposition.

Modulating Charge Separation Efficiency of Water Oxidation Photoanodes with Polyelectrolyte‐Assembled Interfacial Dipole Layers

2019 ◽  
Vol 30 (10) ◽  
pp. 1908492 ◽  
Author(s):  
Sanghyun Bae ◽  
Dongseok Kim ◽  
Hyunwoo Kim ◽  
Minsu Gu ◽  
Jungki Ryu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Charge Separation Efficiency

Highly-oriented Fe2O3/ZnFe2O4 nanocolumnar heterojunction with improved charge separation for photoelectrochemical water oxidation

2016 ◽  
Vol 52 (58) ◽  
pp. 9013-9015 ◽  
Author(s):  
Zhibin Luo ◽  
Chengcheng Li ◽  
Dong Zhang ◽  
Tuo Wang ◽  
Jinlong Gong
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Charge Separation Efficiency ◽  
Photoelectrochemical Water Oxidation

A highly-oriented Fe2O3/ZnFe2O4 heterojunction photoanode with well-defined morphology is featured for improving charge separation efficiency.

Construction of an efficient hole migration pathway on hematite for efficient photoelectrochemical water oxidation

2018 ◽  
Vol 6 (46) ◽  
pp. 23478-23485 ◽  
Author(s):  
Feng Li ◽  
Jing Li ◽  
Lili Gao ◽  
Yiping Hu ◽  
Xuefeng Long ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Migration Pathway ◽  
Charge Separation Efficiency ◽  
Hole Migration ◽  
Photoelectrochemical Water Oxidation

In this study, we constructed an efficient hole migration pathway by integrating ultrathin amorphous NiOOH onto the Fe2O3 coating on F doped α-Fe2O3 nanorods. The resulting photoanode presents higher charge separation efficiency than most reported hematite-based photoanode.

Construction of Defect-Engineered Three-Dimensionally Ordered Macroporous WO3 for Efficient Photocatalytic Water Oxidation Reaction

2021 ◽  
Author(s):  
Yating Wang ◽  
Chaosheng Peng ◽  
Tao Jiang ◽  
Jing Zhang ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Water Oxidation ◽  
Charge Separation ◽  
Oxidation Reaction ◽  
Separation Efficiency ◽  
Colloidal Crystal ◽  
Template Method ◽  
Charge Separation Efficiency ◽  
Colloidal Crystal Template ◽  
Ordered Macroporous

To improve solar light harvesting and charge separation efficiency, we develop a facile strategy for synthesizing defect-engineered three-dimensionally ordered macroporous (3DOM) WO3 photonic crystals via colloidal crystal template method and...

scholarly journals MXene-Ti3C2 assisted one-step synthesis of carbon-supported TiO2/Bi4NbO8Cl heterostructures for enhanced photocatalytic water decontamination

Nanophotonics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 2077-2088 ◽  
Author(s):  
Daixun Jiang ◽  
Xun Sun ◽  
Xilu Wu ◽  
Shuai Zhang ◽  
Xiaofei Qu ◽  
...  
Keyword(s):  
Charge Separation ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Salt Flux ◽  
The Novel ◽  
Water Contaminants ◽  
Photocatalytic Removal ◽  
One Step ◽  
Charge Separation Efficiency ◽  
Perovskite Type

AbstractThe strategy to improve the photocatalytic removal efficiencies towards organic pollutants is still a challenge for the novel Sillen–Aurivillius perovskite type Bi4NbO8Cl. Herein, we report carbon-supported TiO2/Bi4NbO8Cl (C-TiO2/Bi4NbO8Cl) heterostructures with enhanced charge separation efficiency, which were fabricated via molten-salt flux process. The carbon-supported TiO2 particles were derived from MXene Ti3C2 precursors, and attached on plate-like Bi4NbO8Cl, acting as electron-traps to achieve supressed recombination of photo-induced charges. The improved charge separation confers C-TiO2/Bi4NbO8Cl heterostructures superior photocatalytic performance with 53% higher than pristine Bi4NbO8Cl, towards rhodamine B removal with the help of photo-induced holes. Moreover, the C-TiO2/Bi4NbO8Cl heterostructures can be expanded to deal with other water contaminants, such as methyl orange, ciprofloxacin and 2,4-dichlorophenol with 44, 25 and 13% promotion, respectively, and thus the study offers a series of efficient photocatalysts for water purification.

Photoexcited charge carrier dynamics of interconnected TiO2 nanoparticles: evidence of enhancement of charge separation at anatase–rutile particle interfaces

2018 ◽  
Vol 20 (5) ◽  
pp. 3484-3489 ◽  
Author(s):  
Daiki Shingai ◽  
Yusuke Ide ◽  
Woon Yong Sohn ◽  
Kenji Katayama
Keyword(s):  
Charge Carrier ◽  
Tio2 Nanoparticles ◽  
Hydrothermal Treatment ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics ◽  
Charge Separation Efficiency ◽  
Photoexcited Charge Carrier

Hydrothermal treatment can improve the charge separation efficiency of P25.

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