磷酸酯甜菜碱改性ZnO的合成及性能研究

doi:10.3969/j.issn.2097-2806.2025.11.005

Abstract

Abstract:

To obtain functional ZnO nanoparticles that can be stably dispersed in ethylene glycol, an effective surface modification method was proposed. Using self-made phosphobetaine as the surface modifier, the modified ZnO nanoparticles were synthesized from ZnSO₄ and NaOH via one-step method in aqueous solution at low temperature （<100 ℃） and normal pressure. The structural changes between non-modified and modified ZnO nanoparticles were compared by Fourier transform infrared spectroscopy and X-ray diffraction. The microscopic morphology of non-modified and modified ZnO nanoparticles was studied by field emission scanning electron microscopy. The dispersion stability experiments for ZnO nanoparticles were carried out. The results showed that surface modification or capping had no effect on the phase crystallinity of ZnO nanoparticles. When the mass fraction of phosphobetaine was 5% and the reaction temperature was 70 ℃, the product of modified ZnO nanoparticles had relatively small particle size, with an average length of approximately 70 nm, and the contact angle of ethylene glycol thereon was 21°. These modified nanoparticles still had good dispersion stability in ethylene glycol after 30 days.

Key words: ZnO, surface modification, dispersion stability, phosphobetaine

CLC Number:

TQ423

Xiuhua Yan, Lanqin Tang. Synthesis and properties of phosphobetaine-modified ZnO[J].China Surfactant Detergent & Cosmetics, 2025, 55(11): 1402-1407.

Figures/Tables 7

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References 29

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Synthesis and properties of phosphobetaine-modified ZnO

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