Citation: Junjie TANG, Yunting ZHANG, Zhengjiang LIU, Jiani WU. Preparation of CeO₂ by starch template method for photo-Fenton degradation of methyl orange[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(8): 1617-1631. doi: 10.11862/CJIC.20240420 shu

Preparation of CeO₂ by starch template method for photo-Fenton degradation of methyl orange

College of Light Industry and Textile, Inner Mongolia University of Technology, Hohhot 010080, China

Corresponding author: Zhengjiang LIU, zhengjliu@imut.edu.cn
Received Date: 29 November 2024
Revised Date: 23 June 2025

Figures(15)

CeO₂ non-homogeneous Fenton catalyst (ST-CeO₂) was prepared from Ce(NO₃)₃·6H₂O and soluble starch (ST) via the biotemplating method. It was characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, solid UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS). FTIR and Raman spectra confirmed Ce—O bonds and oxygen vacancies. UV-Vis DRS showed strong absorption in the UV and visible light regions. XPS revealed mixed Ce³⁺ and Ce⁴⁺ valence states on the surface, benefiting charge separation and H₂O₂ activation. MO degradation tests showed that under UV light for 60 min, ST-CeO₂ achieved an 82.8% MO degradation rate. With H₂O₂ added, the 60-min degradation rate reached 99.7%, and it still maintained excellent catalytic performance after recycling five times. Radical scavenging tests proved that hole (h⁺) and hydroxyl radical (·OH) were the main active species in MO degradation, with superoxide radical (·O₂^-) playing a secondary role. Also, the mechanism of ST-CeO₂ in MO-dye photocatalytic Fenton degradation was explored.
- cerium oxide,
- dye wastewater,
- photocatalysis,
- heterogeneous photo-Fenton reaction
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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of CeO2 by starch template method for photo-Fenton degradation of methyl orange

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通讯作者: 陈斌, bchen63@163.com

Preparation of CeO₂ by starch template method for photo-Fenton degradation of methyl orange