Study on the effect of zinc or aluminium salt treatments on the surface properties of TiO<sub>2</sub>

SHANG Yuting; LIU Chan; LU Ruifang; YANG Fang; FENG Yujun; YIN Hongyao

doi:10.7513/j.issn.1004-7638.2025.01.005

Volume 46 Issue 1

Feb. 2025

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SHANG Yuting, LIU Chan, LU Ruifang, YANG Fang, FENG Yujun, YIN Hongyao. Study on the effect of zinc or aluminium salt treatments on the surface properties of TiO2[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 34-39. doi: 10.7513/j.issn.1004-7638.2025.01.005

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SHANG Yuting, LIU Chan, LU Ruifang, YANG Fang, FENG Yujun, YIN Hongyao. Study on the effect of zinc or aluminium salt treatments on the surface properties of TiO₂[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(1): 34-39. doi: 10.7513/j.issn.1004-7638.2025.01.005

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Study on the effect of zinc or aluminium salt treatments on the surface properties of TiO₂

doi: 10.7513/j.issn.1004-7638.2025.01.005

1.
Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610000, Sichuan, China
2.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China

Received Date: 2024-07-23
Publish Date: 2025-02-27

Abstract

Abstract

In the production process of titanium dioxide by sulfuric acid method, the selection of salt treatment agents has a significant impact on the surface properties of rutile titanium dioxide crystals. Thus it is necessary to carry out an in-depth study to reveal the differences in the surface properties of titanium dioxide caused by different salt treating agents. In this study, the differences in surface morphology, crystal surface defects, and surface hydroxyl groups of rutile samples treated with zinc-based salt and aluminium-based salt were investigated using SEM, XPS, and BET instruments, respectively. The results show that the aluminium salt-treated rutile samples present elongated shape and suffer from greater sedimentation resistance during the sedimentation process. Meanwhile, the aluminium salt-treated rutile samples have more crystal defects and surface hydroxyls on the surface than the zinc salt-treated samples, and also have more pronounced dissociative effects on water molecules, higher surface potential in the water-dispersed system, and are more capable of forming more stable dispersed systems.
- titanium dioxide,
- zinc/aluminium salt treatments,
- oxygen vacancies,
- surface hydroxyl groups

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References(23)

References

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