Fabrication of ultrathin films of Ta2O5 by a sol–gel method

Wolf, Michael; Roitsch, J.; Mayer, Joachim; Nijmeijer, Arian; Bouwmeester, Henny J.M.

doi:10.1016/j.tsf.2012.12.054

Cited by 20 publications

(6 citation statements)

References 26 publications

(25 reference statements)

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Section: Synthesis Methodsmentioning

confidence: 99%

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Tantalum Pentoxide: From Crystal Structures to Applications in Water Splitting

Han,

Wang

2023

Energy Fuels

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The environment and energy crisis due to carbon dioxide emissions from burning fossil fuels have increased the urgency to explore sustainable energy, while hydrogen with high energy density and environmental friendliness represents a promising solution. Currently, hydrogen production from renewable-energy-driven water splitting via electrocatalytic, photocatalytic, and photoelectrochemical processes are actively investigated, where the design of stable and active earth-abundant catalysts is one of the most important scientific questions. Among the numerous metal oxide catalysts, tantalum pentoxide (Ta 2 O 5 ) has recently received great attention due to its suitable band gap and high stability as an anode for water splitting. In this Review, we start with a summary of diverse Ta 2 O 5 phases with different crystalline structures. We also summarize the experimental methods for the synthesis of different Ta 2 O 5 phases, followed by discussions of the electronic structures of each phase from theoretical calculations. Then, we review the recent applications of Ta 2 O 5 as the anode catalyst for the oxygen evolution reaction (OER) and the cathode catalyst for hydrogen evolution reaction (HER). Finally, we discuss the challenges and opportunities of using Ta 2 O 5 -based materials as viable catalysts for water splitting, with an emphasis on the crucial role of the synergistic effort from both theory and experiment.

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Section: Synthesis Methodsmentioning

confidence: 99%

“…Researchers have successfully produced Ta 2 O 5 thin films using sol–gel methods, with different starting materials and calcination temperatures affecting the film’s amorphous or crystalline nature (Figure ). − …”

Section: Synthesis Methodsmentioning

confidence: 99%

Tantalum Pentoxide: From Crystal Structures to Applications in Water Splitting

Han,

Wang

2023

Energy Fuels

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“…After that, the precursor solution was continuously stirred until achieving a yellow transparent TiO 2 -Ta 2 O 5 sol. The mixture was hydrolyzed without any further water addition at room temperature under stirring for 2.0 h [38][39][40].…”

Section: Preparation Of (50 %)Er 3+ :Y 3 Al 5 O 12 / Pt-(tio 2 -Ta 2mentioning

confidence: 99%

Preparation of (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) nanocatalysts and application in sonocatalytic decomposition of ametryn in aqueous solution

Li¹,

Wei²,

Huang³

et al. 2017

Ultrasonics Sonochemistry

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(5.0%)Er:YAlO/Pt-(TiO-TaO) powder, as a high effective sonocatalyst, was prepared using sol-gel and calcination method. Then it was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of the prepared (5.0%)Er:YAlO/Pt-(TiO-TaO) powder, the sonocatalytic decomposition of ametryn was studied. In addition, some influencing factors such as different Ti/Ta molar ratios on the sonocatalytic activity of the prepared (5.0%)Er:YAlO/Pt-(TiO-TaO) powder, catalyst added amount with ultrasonic irradiation time and used times on the sonocatalytic decomposition efficiency were examined by using ion chromatogram determination. The experimental results showed that the best sonocatalytic decomposition ratio of ametryn were 77.50% based on the N atom calculation and 95.00% based on the S atom calculation, respectively, when the conditions of 10.00mg/L initial concentration, 1.00g/L prepared (5.0%)Er:YAlO/Pt-(TiO-TaO) powder (Ti/Ta=1.00:0.25 heat-treated at 550°C for 3.0h) added amount, 150min ultrasonic irradiation (40kHz frequency and 300W output power), 100mL total volume and 25-28°C temperature were adopted. Therefore, the (5.0%)Er:YAlO/Pt-(TiO-TaO) composite nanoparticles could be considered as an effective sonocatalyst for decomposition of ametryn in aqueous solution.

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“…Among these coatings, tantalum oxide (Ta x O y ) film has recently attracted much attention due to its advantages such as excellent corrosion resistance, good biocompatibility, and good wear resistance, as well as its ability to inhibit the growth of bacteria [18,19,20,21]. At present, various techniques for preparing Ta x O y film have been reported, including magnetron sputtering [18,19,20,21,22], liquid phase deposition (LPD) [23,24], electrochemical deposition [25], pulsed laser deposition (PLD) [26], atomic layer deposition (ALD) [27] and sol-gel method [28,29]. It is pointed out that the magnetron sputtering, with thus fabricated films’ characteristics of high density and uniformity, high strong adhesion, low processing temperature, and easy-controlling film structure/composition, will be the ideal techniques for Ta x O y films preparation [30,31].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of ZnO Doped Tantalum Oxide Multilayer Composite Coatings on Ti6Al4V for Orthopedic Application

Ding

et al. 2019

Nanomaterials

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Ti6Al4V titanium alloy has been widely used as medical implant material in orthopedic surgery, and one of the obstacles preventing it from wide use is toxic metal ions release and bacterial implant infection. In this paper, in order to improve corrosion resistance and antibacterial performance of Ti6Al4V titanium alloy, ZnO doped tantalum oxide (TaxOy) multilayer composite coating ZnO-TaxOy/TaxOy/TaxOy-TiO2/TiO2/Ti (ZnO-TaxOy) was deposited by magnetron sputtering at room temperature. As a comparison, monolayer TaxOy coating was prepared on the surface of Ti6Al4V alloy. The morphology and phase composition of the coatings were investigated by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD), the elemental chemical states of coating surfaces were investigated by X-ray photoelectron spectroscope (XPS). The adhesion strength and corrosion resistance of the coatings were examined by micro-scratch tester and electrochemical workstations, respectively. The results show that the adhesion strength of multilayer ZnO-TaxOy coating is 16.37 times higher than that of single-layer TaxOy coating. The ZnO-TaxOy composite coating has higher corrosion potential and lower corrosion current density than that of TaxOy coating, showing better corrosion inhibition. Furthermore, antibacterial test revealed that multilayer ZnO-TaxOy coating has a much better antibacterial performance by contrast.

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Fabrication of ultrathin films of Ta2O5 by a sol–gel method

Cited by 20 publications

References 26 publications

Tantalum Pentoxide: From Crystal Structures to Applications in Water Splitting

Tantalum Pentoxide: From Crystal Structures to Applications in Water Splitting

Preparation of (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) nanocatalysts and application in sonocatalytic decomposition of ametryn in aqueous solution

Fabrication and Performance of ZnO Doped Tantalum Oxide Multilayer Composite Coatings on Ti6Al4V for Orthopedic Application

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