Nanoscale Optimization and Statistical Modeling of Photoelectrochemical Water Splitting Efficiency of N-Doped TiO2 Nanotubes

Tayirjan T. Isimjan; Milana Trifkovic; Inusa Abdullahi; Sohrab M F Rohani; Ajay Ray

doi:10.1007/s11244-014-0350-0

Nanoscale Optimization and Statistical Modeling of Photoelectrochemical Water Splitting Efficiency of N-Doped TiO2 Nanotubes

Tayirjan T. Isimjan, Milana Trifkovic, Inusa Abdullahi, Sohrab M F Rohani, Ajay Ray

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	114-122
Number of pages	9
Journal	Topics in Catalysis
Volume	58
Issue number	2-3
DOIs	https://doi.org/10.1007/s11244-014-0350-0
State	Published - Dec 19 2014

Bibliographical note

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.

ASJC Scopus subject areas

General Chemistry
Catalysis

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10.1007/s11244-014-0350-0

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title = "Nanoscale Optimization and Statistical Modeling of Photoelectrochemical Water Splitting Efficiency of N-Doped TiO2 Nanotubes",

abstract = "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. {\textcopyright} 2014 Springer Science+Business Media.",

author = "Isimjan, {Tayirjan T.} and Milana Trifkovic and Inusa Abdullahi and Rohani, {Sohrab M F} and Ajay Ray",

note = "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.",

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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

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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.

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Nanoscale Optimization and Statistical Modeling of Photoelectrochemical Water Splitting Efficiency of N-Doped TiO2 Nanotubes

Abstract

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UN SDGs

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