TY - JOUR
T1 - Nanoscale Optimization and Statistical Modeling of Photoelectrochemical Water Splitting Efficiency of N-Doped TiO2 Nanotubes
AU - Isimjan, Tayirjan T.
AU - Trifkovic, Milana
AU - Abdullahi, Inusa
AU - Rohani, Sohrab M F
AU - Ray, Ajay
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The financial support from NSERC and the Western University, London, Ontario are gratefully acknowledged. The authors also thank the Surface Science Western for excellent contribution on the characterization, Mr. Chris Van deLaar of Western University machine services for his brilliant idea on equipment design.
PY - 2014/12/19
Y1 - 2014/12/19
N2 - Highly ordered nitrogen-doped titanium dioxide (N-doped TiO2) nanotube array films with enhanced photo-electrochemical water splitting efficiency (PCE) for hydrogen generation were fabricated by electrochemical anodization, followed by annealing in a nitrogen atmosphere. Morphology, structure and composition of the N-doped TiO2 nanotube array films were investigated by FE-SEM, XPS, UV-Vis and XRD. The effect of annealing temperature, heating rate and annealing time on the morphology, structure, and photo-electrochemical property of the N-doped TiO2 nanotube array films were investigated. A design of experiments method was applied in order to minimize the number of experiments and obtain a statistical model for this system. From the modelling results, optimum values for the influential factors were obtained in order to achieve the maximum PCE. The optimized experiment resulted in 7.42 % PCE which was within 95 % confidence interval of the predicted value by the model. © 2014 Springer Science+Business Media.
AB - Highly ordered nitrogen-doped titanium dioxide (N-doped TiO2) nanotube array films with enhanced photo-electrochemical water splitting efficiency (PCE) for hydrogen generation were fabricated by electrochemical anodization, followed by annealing in a nitrogen atmosphere. Morphology, structure and composition of the N-doped TiO2 nanotube array films were investigated by FE-SEM, XPS, UV-Vis and XRD. The effect of annealing temperature, heating rate and annealing time on the morphology, structure, and photo-electrochemical property of the N-doped TiO2 nanotube array films were investigated. A design of experiments method was applied in order to minimize the number of experiments and obtain a statistical model for this system. From the modelling results, optimum values for the influential factors were obtained in order to achieve the maximum PCE. The optimized experiment resulted in 7.42 % PCE which was within 95 % confidence interval of the predicted value by the model. © 2014 Springer Science+Business Media.
UR - http://hdl.handle.net/10754/563927
UR - http://link.springer.com/10.1007/s11244-014-0350-0
UR - http://www.scopus.com/inward/record.url?scp=84928638764&partnerID=8YFLogxK
U2 - 10.1007/s11244-014-0350-0
DO - 10.1007/s11244-014-0350-0
M3 - Article
SN - 1022-5528
VL - 58
SP - 114
EP - 122
JO - Topics in Catalysis
JF - Topics in Catalysis
IS - 2-3
ER -
