The effect of chemical additives in phosphoric acid anodization of aluminum-tantalum thin films

Nickel, Matthew R; Melligan, Gavin; McMullen, Todd; Burrell, Robert E.

doi:10.1016/j.tsf.2019.06.033

Cited by 10 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Nickel et. al., the composite refractive index of metal oxide can be enhanced either by increasing anodization voltage or with a certain mixture of anodization electrolyte composition to increase the pore diameters [75]. The addition of chemical additives in anodization might also agitate to increase the refractive index by decreasing the dissolution rate.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…Chemical addictive such as oxalic acid reduces chemical etching; hence, decreases the pore size which reduces the air content in the thin film. As a result, the refractive index of the porous aluminium oxide layer increases due to a decrease in air content within the oxide layer [75]. Modification of optical properties is possible through anodization as synthesizing the nanostructure will alter the electronic band structure.…”

Section: Optical Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Properties and Application of Electrochemically Anodized Ta2O5 Nanostructures: A Review

Abdul Rani

2022

JMechE

View full text Add to dashboard Cite

Anodization is one of the simplest synthesis methods that can be employed to generate generous nanostructures metal oxide. Knowing the potential of anodized Tantalum Pentoxide (Ta2O5) to form the desired nanostructure which is capable to produce outstanding performance, the elements and factors influence properties enhancement were gathered. The effect of parameter variation during anodization such as electrolyte composition, voltage variation, and anodization duration was evaluated to inspect the nanostructure formed. The results generated the differences in properties of nanostructures. Characterization methods such as field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Transmission electron microscopy (TEM), Atomic force microscopy (AFM), and X-ray electron spectroscopy (XPS) were used to investigate the structural, electrical, chemical, optical, biological and mechanical properties of anodized Ta2O5. The findings show that anodized Ta2O5 is reliable to be employed as gas sensor, photocatalysis, pH sensor, biomedical materials and humidity sensor due to its superior properties to produce high sensitivity device and increase the efficiency. In this review, a general overview of anodized Ta2O5 is presented which focuses on its fundamental properties, method of synthesis anodized Ta2O5, anodizationparameter optimization, and recent applications in chemical and biological area, along with a discussion on future research directions relevant to this material. It is hoped that by synthesising nanostructures via anodization, the sensing performance will improve and Ta2O5 will be proven as a trustworthy metal oxide material for sensing applications.

show abstract

Section: Optical Propertiesmentioning

confidence: 99%

Section: Optical Propertiesmentioning

confidence: 99%

Properties and Application of Electrochemically Anodized Ta2O5 Nanostructures: A Review

Abdul Rani

2022

JMechE

View full text Add to dashboard Cite

show abstract

“…There are many advantages to anodizing nanotubes since the process can be precisely controlled to achieve the appropriate size and shape [14]. It is also cost-effective and easy to manipulate parameters to regulate the thickness and shape of Ta2O5 films by controlling the acid and chemical additive contents [15].…”

mentioning

confidence: 99%

Preliminary Study of pH Sensor for Engine Oil Deterioration Detection Using Anodized Ta2O5 Nanotubular

Ngadiman

Rani

Zulkifli

et al. 2022

IJIE

View full text Add to dashboard Cite

pH sensor is one of the sensing principles that can be employed in detection of engine oil deterioration. To avoid unnecessary changing of engine oil while maintaining the oil quality consumed by car’s engine, engine oil deterioration sensor is required to continuously monitor the oil condition. In this work, we fabricated pH sensor sensing layer made up of tantalum thin film. Ta2O5nanotubular was constructed as the medium of interaction to measure the quality of engine oil. Anodization synthesis method was used to fabricate the sensing layer by varying the anodization time. Two samples anodized at 30 min and 60 min were tested in pH buffer solution at pH ranging from 2, 4, 7, 10 and 12. Further characterization using field emission scanning electron microscope (FESEM) was conducted to investigate the surface morphology properties, while X-ray diffraction (XRD) was conducted to obtain crystal properties of Ta2O5nanotubular. A homogeneous Ta2O5nanostructures with cubic crystal structure and pore diameter ranging between 15 to 20 nm was obtained. 30 min sample tested in pH buffer solution has better adsorption of H+ions with linear pH sensitivity of 31.616 mV/pH and good stability. Therefore, anodization method can be an alternative to fabricate pH sensor for oil deterioration detection system.Additionally, other study on chemical sensor for the detection of engine oil deterioration level wasalsodiscussed in this paper.

show abstract

Facile fabrication method and decent humidity sensing of anodised nanotubular Ta2O5 on Ta foil substrate

Ngadiman

Rani

Ayub

et al. 2022

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

The effect of chemical additives in phosphoric acid anodization of aluminum-tantalum thin films

Cited by 10 publications

References 24 publications

Properties and Application of Electrochemically Anodized Ta2O5 Nanostructures: A Review

Properties and Application of Electrochemically Anodized Ta2O5 Nanostructures: A Review

Preliminary Study of pH Sensor for Engine Oil Deterioration Detection Using Anodized Ta2O5 Nanotubular

Facile fabrication method and decent humidity sensing of anodised nanotubular Ta2O5 on Ta foil substrate

Contact Info

Product

Resources

About