Synergistic Effect of Si Doping and Heat Treatments Enhances the Photoelectrochemical Water Oxidation Performance of TiO2 Nanorod Arrays

2017 ◽  
Vol 27 (31) ◽  
pp. 1701575 ◽  
Author(s):  
Changlong Chen ◽  
Yuling Wei ◽  
Guangzheng Yuan ◽  
Qinglong Liu ◽  
Ranran Lu ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Water Oxidation ◽  
Heat Treatments ◽  
Nanorod Arrays ◽  
Tio2 Nanorod ◽  
Si Doping ◽  
Tio2 Nanorod Arrays ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation

Ta-Doped porous TiO2 nanorod arrays by substrate-assisted synthesis: efficient photoelectrocatalysts for water oxidation

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19367-19374 ◽  
Author(s):  
Shiman He ◽  
Yuying Meng ◽  
Qili Wu ◽  
Jingling Yang ◽  
Senchuan Huang ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Vital Role ◽  
Nanorod Arrays ◽  
Porous Tio2 ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Photoelectrochemical Water Oxidation

Ta-doped porous TiO2 nanorod arrays on a Ta substrate are synthesized and used as a photoanode for photoelectrochemical water oxidation. The Ta substrate provides Ta dopants and also plays a vital role in the formation of nanopores in the nanorods.

High sub-band gap response of TiO2 nanorod arrays for visible photoelectrochemical water oxidation

2019 ◽  
Vol 465 ◽  
pp. 192-200 ◽  
Author(s):  
Baoshun Liu ◽  
Jingjing Yang ◽  
Jiangyan Wang ◽  
Xiujian Zhao ◽  
Kazuya Nakata
Keyword(s):  
Band Gap ◽  
Water Oxidation ◽  
Nanorod Arrays ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Photoelectrochemical Water Oxidation

scholarly journals Hierarchical Ta-Doped TiO2 Nanorod Arrays with Improved Charge Separation for Photoelectrochemical Water Oxidation under FTO Side Illumination

Nanomaterials ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 983 ◽  
Author(s):  
Shiman He ◽  
Yuying Meng ◽  
Yangfei Cao ◽  
Senchuan Huang ◽  
Jingling Yang ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Water Oxidation ◽  
Large Scale ◽  
Nanorod Arrays ◽  
Hydrogen Electrode ◽  
Doped Tio2 ◽  
Tio2 Nanorod ◽  
Tio2 Nanorod Arrays ◽  
Side Illumination ◽  
Photoelectrochemical Water Oxidation

TiO2 is one of the most attractive semiconductors for use as a photoanode for photoelectrochemical (PEC) water oxidation. However, the large-scale application of TiO2 photoanodes is restricted due to a short hole diffusion length and low electron mobility, which can be addressed by metal doping and surface decorating. In this paper we report the successful synthesis of hierarchical Ta doped TiO2 nanorod arrays, with nanoparticles on the top (Ta:TiO2), on F-doped tin oxide (FTO) glass by a hydrothermal method, and its application as photoanodes for photoelectrochemical water oxidation. It has been found that the incorporation of Ta5+ in the TiO2 lattice can decrease the diameter of surface TiO2 nanoparticles. Ta:TiO2-140, obtained with a moderate Ta concentration, yields a photocurrent of ∼1.36 mA cm−2 at 1.23 V vs. a reversible hydrogen electrode (RHE) under FTO side illumination. The large photocurrent is attributed to the large interface area of the surface TiO2 nanoparticles and the good electron conductivity due to Ta doping. Besides, the electron trap-free model illustrates that Ta:TiO2 affords higher transport speed and lower electron resistance when under FTO side illumination.

Fluorine and tin co-doping synergistically improves the photoelectrochemical water oxidation performance of TiO2 nanorod arrays by enhancing the ultraviolet light conversion efficiency

2019 ◽  
Vol 48 (32) ◽  
pp. 12096-12104 ◽  
Author(s):  
Tong Wu ◽  
Changlong Chen ◽  
Yuling Wei ◽  
Ranran Lu ◽  
Leshuang Wang ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Conversion Efficiency ◽  
Water Oxidation ◽  
Uv Light ◽  
Nanorod Arrays ◽  
Co Doping ◽  
Tio2 Nanorod Arrays ◽  
Oxidation Performance ◽  
Photoelectrochemical Water Oxidation ◽  
Light Conversion Efficiency

Fluorine and tin co-doping changes the electronic structure of rutile TiO2 nanorod arrays, leading to much-enhanced UV light conversion efficiency and significantly improved photoelectrochemical water oxidation performance.

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