Study on the preparation and formation mechanism of barium sulphate nanoparticles modified by different organic acids
Yuhua Shen Chuanhao Li Xuemei Zhu Anjian Xie Lingguang Qiu Jinmiao Zhu
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This paper reports a simple method to prepare barium sulphate nanoparticles by use of tetradecanoic acid, hexadecanoic acid and stearic acid as modifier. The barium sulphate nanoparticles obtained are characterized by using Fourier transform infra-red spectroscopy (FT-IR), powder X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic laser light scatter (DLLS) and thermogravimetric analysis (TGA), respectively. The results show that the BaSO4 particles are all spherical and in the nano-scale. Our method has a better dispersion and controllable diameter dependent on the length of the chain of organic acid and the pH value of the system. A possible mechanism is also discussed.
Yuhua Shen1 Chuanhao Li1 Xuemei Zhu1 Anjian Xie1 Lingguang Qiu1 Jinmiao Zhu1
Volume 135, 2023
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