Nitrogen doped TiO2 nanotube arrays with high photoelectrochemical activity for photocatalytic applications

2013 ◽  
Vol 280 ◽  
pp. 523-529 ◽  
Author(s):  
Bao Yuan ◽  
Yan Wang ◽  
Haidong Bian ◽  
Tiankuo Shen ◽  
Yucheng Wu ◽  
...  
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Photoelectrochemical Activity ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
Photocatalytic Applications

scholarly journals Enhanced Photocatalytic Performance of Nitrogen-Doped TiO2 Nanotube Arrays Using a Simple Annealing Process

Micromachines ◽  
2018 ◽  
Vol 9 (12) ◽  
pp. 618 ◽  
Author(s):  
Phuoc Le ◽  
Le Hieu ◽  
Tu-Ngoc Lam ◽  
Nguyen Hang ◽  
Nguyen Truong ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Synergistic Effects ◽  
Annealing Process ◽  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2 ◽  
Nitrogen Doped ◽  
N Doping

Nitrogen-doped TiO2 nanotube arrays (N-TNAs) were successfully fabricated by a simple thermal annealing process in ambient N2 gas at 450 °C for 3 h. TNAs with modified morphologies were prepared by a two-step anodization using an aqueous NH4F/ethylene glycol solution. The N-doping concentration (0–9.47 at %) can be varied by controlling N2 gas flow rates between 0 and 500 cc/min during the annealing process. Photocatalytic performance of as-prepared TNAs and N-TNAs was studied by monitoring the methylene blue degradation under visible light (λ ≥ 400 nm) illumination at 120 mW·cm−2. N-TNAs exhibited appreciably enhanced photocatalytic activity as compared to TNAs. The reaction rate constant for N-TNAs (9.47 at % N) reached 0.26 h−1, which was a 125% improvement over that of TNAs (0.115 h−1). The significant enhanced photocatalytic activity of N-TNAs over TNAs is attributed to the synergistic effects of (1) a reduced band gap associated with the introduction of N-doping states to serve as carrier reservoir, and (2) a reduced electron‒hole recombination rate.

A general approach to the fabrication of Sn-doped TiO2 nanotube arrays with titanium vacancies for supercapacitors

2021 ◽  
pp. 151175
Author(s):  
Qianqian Liu ◽  
Yan Yang ◽  
Yilin Ni ◽  
Qi Wang ◽  
Huiwen Yu ◽  
...  
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2

Al-Doped TiO2 Nanotube Arrays Achieved by Using Low Boiling AlCl3 as a Dopant Source for Supercapacitors

2019 ◽  
Vol 166 (16) ◽  
pp. A3889-A3895
Author(s):  
Lizhen Wu ◽  
Shikai Cao ◽  
Zongrong Ying ◽  
Wenqiang Huang ◽  
Dawei Xu ◽  
...  
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2 ◽  
Dopant Source

Self-doped TiO2 nanotube arrays for electrochemical mineralization of phenols

Chemosphere ◽  
2019 ◽  
Vol 226 ◽  
pp. 329-339 ◽  
Author(s):  
Ling Gan ◽  
Yifan Wu ◽  
Haiou Song ◽  
Chang Lu ◽  
Shupeng Zhang ◽  
...  
Keyword(s):  
Tio2 Nanotube Arrays ◽  
Tio2 Nanotube ◽  
Nanotube Arrays ◽  
Doped Tio2
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