Photoelectrochemical water splitting performance of vertically aligned hematite nanoflakes deposited on FTO by a hydrothermal method

Ramesh, R.; Yaakob, Zahira; Pudukudy, Manoj; Rahaman, Muhammad Syukri Abd; Sopian, Kamaruzzaman

doi:10.1016/j.jallcom.2014.04.105

Cited by 39 publications

(42 citation statements)

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“…Thus most efficient hematite photoanodes have been made by chemical vapor deposition [5,10]. A versatile synthesis procedure, allowing performance optimization by doping, has been obtained by the hydrothermal route [11][12][13][14]. An equally versatile, room temperature procedure for hematite film formation and doping is by electrodeposition [6][7][8]15,16].…”

Section: Introductionmentioning

confidence: 99%

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Kalamaras

Dracopoulos

Sygellou

et al. 2016

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Kalamaras

Dracopoulos

Sygellou

et al. 2016

Chemical Engineering Journal

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“…The rapid decrease in cost of photovoltaic modules and systems in the last few years has opened new perspectives for using solar energy as a major source of electricity in the coming years and decades [1]. Photoelectrochemical (PEC) process is one of the promising approaches to convert solar energy into chemical as well as electrical energy [2][3][4][5][6]. 2 PEC measurement is based on charge transfer between the electrolyte, semiconductor and electrode when irradiated with photons.…”

Section: Introductionmentioning

confidence: 99%

“…Photoelectrochemical (PEC) process is one of the promising approaches to convert solar energy into chemical as well as electrical energy [2][3][4][5][6]. 2 PEC measurement is based on charge transfer between the electrolyte, semiconductor and electrode when irradiated with photons. In general, the charge separation and transfer mechanism are the key issues affecting the PEC cell performance.…”

Section: Introductionmentioning

confidence: 99%

Photoelectrochemical properties of In2Se3 thin films: Effect of substrate temperature

Yadav¹,

Salunke²

2015

Journal of Alloys and Compounds

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“…1 Many metal oxides have been widely used in the process of the PEC water splitting, like TiO 2 , Fe 2 O 3 , zinc oxide (ZnO) and so on. [2][3][4] Especially, α-Fe 2 O 3 has been significantly investigated in-depth due to its various advantaged properties, such as chemical stability, erosion resistance, non-toxicity and high photocatalytic activity. 5 However, the photoelectric conversion efficiency of single α-Fe 2 O 3 is low 6 resulting from its short lifetime of photogenerated charge carriers, limited hole diffusion length, and poor mobility of charge carriers.…”

mentioning

confidence: 99%

Hydrothermal synthesis of Fe₂O₃/ZnO heterojunction photoanode for photoelectrochemical water splitting

Chen

Bai

et al. 2015

Funct. Mater. Lett.

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We report a photoanode based on Fe 2 O 3 /zinc oxide (ZnO) heterojunction synthesized by hydrothermal method for photoelectronchemical (PEC) water splitting. The forming heterojunction is systemically characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results from the I-V characteristic curve and conversation efficiency of Fe 2 O 3 /ZnO heterojunction reveal that the forming heterojunction would be a benefit for electron transferring from conduction band of ZnO to that of Fe 2 O 3 . However, the quantity of ZnO film has an effect on the photocurrent density, the suitable of which has shown enhanced PEC performance.Keywords: Fe 2 O 3 /ZnO; photoanode; photoelectrochemical property; water splitting. Photoelectrochemical (PEC) water splitting, as an effective way to solve the world's energy problem, has drawn wide attention. 1 Many metal oxides have been widely used in the process of the PEC water splitting, like TiO 2 , Fe 2 O 3 , zinc oxide (ZnO) and so on. 2-4 Especially, α-Fe 2 O 3 has been significantly investigated in-depth due to its various advantaged properties, such as chemical stability, erosion resistance, non-toxicity and high photocatalytic activity. 5 However, the photoelectric conversion efficiency of single α-Fe 2 O 3 is low 6 resulting from its short lifetime of photogenerated charge carriers, limited hole diffusion length, and poor mobility of charge carriers. 7 Heterostructured semiconductor material with unique energy band and properties of carrier transport can restrain the recombination of photogenerated electrons and holes to improve photoelectric conversion efficiency. [8][9][10] ZnO material is a kind of important inorganic materials, 11 and the corresponding reports of ZnO in the field of PEC water splitting have been mainly focused on characteristics of high transparency and high dispersion, 12,13 which might match with α-Fe 2 O 3 suitably. Taking account of its large band gap (c.a. 3.37 eV), ZnO takes a nature of responding ability to ultraviolet light. ZnO itself has low photocatalytic efficiency and high rate of photocorrosion, 14 but enhanced photocatalytic activity and superior structural stability will be achieved when the size of ZnO decreases into nanoscale. 15 Surface electronic structure and crystal structure of ZnO nanograins have changed, and the photocorrosion phenomena would mainly occur at the surface defect sites of ZnO.Based on the properties of above two matrices, the combination of Fe 2 O 3 and ZnO could effectively enhance separation of electrons and holes and improve photocatalytic activity, 16,17 due to their cooperativity of energy level structures. 18 Photocatalyst materials with heterojunction can be applied in PEC water splitting, and degrade various organic pollution in our environment. 19,20 The recent researches show that there are still lack of practical heterojunction with stable property and good photocatalytic performance. 21,22 So it is an urgent task for us to develop the re...

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Photoelectrochemical water splitting performance of vertically aligned hematite nanoflakes deposited on FTO by a hydrothermal method

Cited by 39 publications

References 39 publications

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Photoelectrochemical properties of In2Se3 thin films: Effect of substrate temperature

Hydrothermal synthesis of Fe₂O₃/ZnO heterojunction photoanode for photoelectrochemical water splitting

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Photoelectrochemical water splitting performance of vertically aligned hematite nanoflakes deposited on FTO by a hydrothermal method

Cited by 39 publications

References 39 publications

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Electrodeposited Ti-doped hematite photoanodes and their employment for photoelectrocatalytic hydrogen production in the presence of ethanol

Photoelectrochemical properties of In2Se3 thin films: Effect of substrate temperature

Hydrothermal synthesis of Fe2O3/ZnO heterojunction photoanode for photoelectrochemical water splitting

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Hydrothermal synthesis of Fe₂O₃/ZnO heterojunction photoanode for photoelectrochemical water splitting