Comparative study of divalent cation sorption on titania nanotubes using Co2+, Ni2+, Zn2+, and Sr2+

Goto, Tomoyo; Kondo, Yoshifumi; Cho, Sunghun; Seino, Satoshi; Sekino, Tohru

doi:10.1016/j.ceja.2022.100388

Chemical Engineering Journal Advances

2022

DOI: 10.1016/j.ceja.2022.100388

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Comparative study of divalent cation sorption on titania nanotubes using Co2+, Ni2+, Zn2+, and Sr2+

Tomoyo Goto

Yoshifumi Kondo²,

Sunghun Cho³

et al.

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2024

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Cited by 5 publications

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Effect of synthesis temperature on the properties and photocatalytic performance of peroxo-titanate nanotubes prepared by bottom-up synthesis method

Han,

Park,

Goto

et al. 2024

Discov Mater

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The alkaline treatment synthesis of titania/titanate nanotubes (TNTs) requires highly concentrated alkaline solutions (≥ 10 mol/L), which pose environmental and productivity limitations. In contrast, a bottom-up synthesis method for peroxo-titanate nanotubes (PTNTs) has been developed. This method offers two advantages: it can synthesize materials using low-concentration alkaline solutions (1.5 mol/L) and produce photocatalytic materials that are responsive to visible light. In general, the higher the crystallinity of a catalyst, the better its properties. However, PTNTs synthesized at temperatures close to their boiling point (around 100 °C) exhibit low crystallinity. This study hypothesizes a hydrothermal synthesis method at higher temperatures will enhance the crystallinity and photocatalytic performance of PTNTs, synthesizing them at temperatures ranging from 120 to 200 °C using a method capable of exceeding the boiling point. Higher synthesis temperatures resulted in improved morphological and crystallographic properties of the PTNTs. However, the formation of peroxo-bonding, crucial for visible light responsiveness, decreased. Nevertheless, peroxo-bonding formation was still achievable at the highest temperature of 200 °C, and the sample exhibited the best Rhodamine B (Rh B) photodegradation performance under visible light due to its enhanced specific surface area and crystallinity. This study highlights the novelty and environmental significance of hydrothermally synthesized PTNTs as superior photocatalysts by optimizing the synthesis temperature while using lower concentration alkaline solutions.

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Effect of synthesis temperature on the properties and photocatalytic performance of peroxo-titanate nanotubes prepared by bottom-up synthesis method

Han,

Park,

Goto

et al. 2024

Discov Mater

View full text Add to dashboard Cite

show abstract

Magnetic sodium titanate nanotubes for simultaneous recovery of multiple low-level heavy and radioactive metal ions

Radwan,

Nusseir,

Ghanem

et al. 2024

Inorganic Chemistry Communications

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Enhanced electrochemical performance of Sr doped ZnO for tartrazine detection in sports drink

Dai,

Liu,

Jiang

2024

Matéria (Rio J.)

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Comparative study of divalent cation sorption on titania nanotubes using Co2+, Ni2+, Zn2+, and Sr2+

Cited by 5 publications

References 45 publications

Effect of synthesis temperature on the properties and photocatalytic performance of peroxo-titanate nanotubes prepared by bottom-up synthesis method

Effect of synthesis temperature on the properties and photocatalytic performance of peroxo-titanate nanotubes prepared by bottom-up synthesis method

Magnetic sodium titanate nanotubes for simultaneous recovery of multiple low-level heavy and radioactive metal ions

Enhanced electrochemical performance of Sr doped ZnO for tartrazine detection in sports drink

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