Interface feature characterization and Schottky interfacial layer confirmation of TiO 2 nanotube array film

Li, Hongchao; Tang, Ningxin; Yang, Haihua; Leng, Xian; Zou, Jianpeng

doi:10.1016/j.apsusc.2015.07.088

Cited by 18 publications

(7 citation statements)

References 39 publications

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“…All obtained titanium dioxide nanostructures consisted of the pure anatase phase. This was confirmed by the observed maxima at 25.2°, 38°, 38.2°, 48.1°, 54.2°, and 55.1°, corresponding to the Miller indices (101), (004), (112), (200), (105), and (211), respectively [ 34 ].…”

Section: Resultsmentioning

confidence: 57%

Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties

et al. 2021

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In this work, for the first time, the influence of scaling up the process of titanium dioxide nanotube (TiO2NT) synthesis on the photoelectrochemical properties of TiO2 nanotubes is presented. Titanium dioxide nanotubes were obtained on substrates of various sizes: 2 × 2, 4 × 4, 5 × 5, 6 × 6, and 8 × 8 cm2. The electrode material was characterized using scanning electron microscopy as well as Raman and UV–vis spectroscopy in order to investigate their morphology, crystallinity, and absorbance ability, respectively. The obtained electrodes were used as photoanodes for the photoelectrochemical water splitting. The surface analysis was performed, and photocurrent values were determined depending on their place on the sample. Interestingly, the values of the obtained photocurrent densities in the center of each sample were similar and were about 80 µA·cm2. The results of our work show evidence of a significant contribution to wider applications of materials based on TiO2 nanotubes not only in photoelectrochemistry but also in medicine, supercapacitors, and sensors.

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Section: Resultsmentioning

confidence: 57%

Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties

et al. 2021

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“…Nonetheless, the signature peaks of SrMoO 4 at 33.7, 37.1, 38.5, 48.1, 76.3, 77.4, 82.3, 86.8 32 – 34 and of CoMoO 4 at 25.4, 32.4, 36.3, 38.5, 40.2, 45.2, 63.0 35 – 37 are very prominent in all samples 38 , 39 . The remaining crystallite phases were indexed as characteristic peaks of anatase and the titanium (Ti) phase acting as TiO 2 NT support 40 . The ornamental GO structure peak was observed at 10.5 plane for only a TiO 2 /SrMoO 4 /GO hybrid.…”

Section: Resultsmentioning

confidence: 99%

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Szkoda

Ilnicka

Skorupska

et al. 2022

Sci Rep

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Herein, we demonstrate that modification of TiO2 nanotubes with graphene–strontium and cobalt molybdate perovskite can turn them into active electrocatalysts for hydrogen evolution reaction (HER). For this purpose, a simple method of hydrothermal synthesis of perovskites was developed directly on the TiO2 nanotubes substrate. Moreover, the obtained hybrids were also decorated with graphene oxide (GO) during one-step hydrothermal synthesis. The obtained materials were characterized by scanning electron microscopy with energy dispersive X-ray analysis, Raman spectroscopy, and X-ray diffraction analysis. Catalytic properties were verified by electrochemical methods (linear voltammetry, chronopotentiometry). The obtained hybrids were characterized by much better catalytic properties towards hydrogen evolution reaction compared to TiO2 and slightly worse than platinum. The optimized hybrid catalyst (decorated by GO) can drive a cathodic current density of 10 mA cm−2 at an overpotential of 121 mV for HER with a small Tafel slope of 90 mV dec−1 in 0.2 M H2SO4.

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“…The morphologies and microstructures of the hybrid materials include of TiO prominent in all samples 30,31 . The remaining crystallite phases were indexed as characteristic peaks of anatase and the titanium (Ti) phase acting as TiO 2 NT support 32 .…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

Modification of TiO 2 nanotubes by graphene - strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Szkoda

Ilnicka

Skorupska

et al. 2022

Preprint

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Herein, we demonstrate that modification of TiO2 nanotubes with graphene-strontium and cobalt molybdate perovskite can turn them into active electrocatalysts for hydrogen evolution reaction (HER). For this purpose, a simple method of hydrothermal synthesis of perovskites was developed directly on the TiO2 nanotubes substrate. Moreover, the obtained hybrids were also decorated with graphene oxide (GO) during one-step hydrothermal synthesis. The obtained materials were characterized by scanning electron microscopy with energy dispersive X-ray analysis, Raman spectroscopy, and X-ray diffraction analysis. Catalytic properties were verified by electrochemical methods (linear voltammetry, chronopotentiometry). The obtained hybrids were characterized by much better catalytic properties towards hydrogen evolution reaction compared to TiO2 and slightly worse than platinum. The optimized hybrid catalyst (decorated by GO) can drive a cathodic current density of 10 mA cm−2 at an overpotential of 121 mV for HER with a small Tafel slope of 90 mV dec−1 in 0.2 M H2SO4.

show abstract

Interface feature characterization and Schottky interfacial layer confirmation of TiO 2 nanotube array film

Cited by 18 publications

References 39 publications

Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties

Scaling Up the Process of Titanium Dioxide Nanotube Synthesis and Its Effect on Photoelectrochemical Properties

Modification of TiO2 nanotubes by graphene–strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

Modification of TiO 2 nanotubes by graphene - strontium and cobalt molybdate perovskite for efficient hydrogen evolution reaction in acidic medium

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