Effect of anodization voltage on performance of TiO2 nanotube arrays for hydrogen generation in a two-compartment photoelectrochemical cell

2014 ◽  
Vol 39 (22) ◽  
pp. 11368-11375 ◽  
Author(s):  
Yan Sun ◽  
Kang-Ping Yan
Keyword(s):  
Hydrogen Generation ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Photoelectrochemical Cell ◽  
Nanotube Arrays ◽  
Anodization Voltage

Assembling γ-graphyne surrounding TiO2 nanotube arrays: An efficient p-n heterojunction for boosting photoelectrochemical water splitting

2021 ◽  
Author(s):  
Dong Qiu ◽  
Chengli He ◽  
Yuxuan Lu ◽  
Qiaodan Li ◽  
Yang Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Electron Injection ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Photoelectrochemical Water Splitting ◽  
Nanotube Arrays ◽  
Injection Efficiency ◽  
Electron Injection Efficiency

Photoelectrochemical water splitting is an excellent strategy for hydrogen generation, and it is pivotal to develop photoanodes with proficient sunlight harvesting, rapid charge separation, and enhanced electron injection efficiency. In...

Hydrogen generation under sunlight by self ordered TiO2 nanotube arrays

2009 ◽  
Vol 34 (8) ◽  
pp. 3250-3257 ◽  
Author(s):  
Zhaoyue Liu ◽  
Batric Pesic ◽  
Krishnan S. Raja ◽  
Raghu R. Rangaraju ◽  
Mano Misra
Keyword(s):  
Hydrogen Generation ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays

High-efficiency photoelectrocatalytic hydrogen generation enabled by Ag deposited and Ce doped TiO2 nanotube arrays

2015 ◽  
Vol 41 (3) ◽  
pp. 5107-5116 ◽  
Author(s):  
Xiao Fan ◽  
Jun Wan ◽  
Enzhou Liu ◽  
Lin Sun ◽  
Yang Hu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Hydrogen Generation ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2

scholarly journals Investigation the effect of anodization voltage on the geometrical properties and photocatalytic activity of TiO2 nanotube arrays for degradation of p-nitrophenol

2019 ◽  
Author(s):  
Kamyar Khoshsirat Janekbari ◽  
Neda Gilani ◽  
azadeh ebrahimian pirbazari
Keyword(s):  
Photocatalytic Degradation ◽  
Tio2 Nanotubes ◽  
Cumulative Effect ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Polluted Water ◽  
Nanotube Arrays ◽  
Order Kinetic ◽  
Anodization Voltage ◽  
Geometrical Properties

p-nitrophenol (PNP) is a nitroaromatic compound that poses a potential environmental hazard because of its acute toxicity, high carcinogenicity, low biodegradability and cumulative effect. Titanium dioxide (TiO2) nanotubes have shown great potential as ideal and powerful photocatalysts in purification of polluted water due to their high photo oxidation, anti-fogging, nontoxicity, good chemical stability and low cost. Therefore, TiO2 nanotube arrays were fabricated by two-step anodization process at 30,40 and 50V; and were used in photocatalytic degradation of organic pollution p-nitrophenol. In order to have the crystal structure, nanotubes were annealed at 450 °C for 2 hours. Characterizing of TiO2 nanotubes were evaluated by FESEM, XRD and Spectrophotometry analyses. Effect of anodization voltage on nanotube’s length and diameter were investigated. The result showed that as anodization voltage increases from 30V to 50V, nanotube’s length, diameter and wall thickness increase linearly from 1.4 μm to 4.8 μm, 45 nm to 100nm and 15nm to 25 nm, respectively. Increasing in anodization voltage lead to enhancement in porosity (0.4-0.5) and roughness factor (109-194) of TiO2 nanotubes, respectively. By investigating kinetic of degradation of p-nitrophenol, it was observed that mechanism of photocatalytic degradation for all samples are followed first order kinetic. The results indicate that amongst all synthesized samples, 50 V sample with 38%, shows the most efficiency in degradation of p-nitrophenol under UV irradiation.

Photoelectrochemical hydrogen generation on TiO2 nanotube arrays sensitized with CdS@Sb2S3 core shell particles

2017 ◽  
Vol 42 (51) ◽  
pp. 30249-30256 ◽  
Author(s):  
J.E. Carrera-Crespo ◽  
G. Ramos-Sánchez ◽  
V. De la Luz ◽  
F. González ◽  
E. Barrera ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Core Shell ◽  
Shell Particles

Carbon quantum dot sensitized TiO2 nanotube arrays for photoelectrochemical hydrogen generation under visible light

Nanoscale ◽  
2013 ◽  
Vol 5 (6) ◽  
pp. 2274 ◽  
Author(s):  
Xing Zhang ◽  
Fang Wang ◽  
Hui Huang ◽  
Haitao Li ◽  
Xiao Han ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Visible Light ◽  
Hydrogen Generation ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Carbon Quantum Dot
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