Citation: Lin Ge, Chengjie Zang, Feng Chen. The enhanced Fenton-like catalytic performance of PdO/CeO₂ for the degradation of acid orange 7 and salicylic acid[J]. Chinese Journal of Catalysis, ;2015, 36(3): 314-321. doi: 10.1016/S1872-2067(14)60261-8 shu

The enhanced Fenton-like catalytic performance of PdO/CeO₂ for the degradation of acid orange 7 and salicylic acid

1.
Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, China

Received Date: 21 October 2014
Available Online: 1 December 2014
Fund Project: 国家自然科学基金(21177039) (21177039) 上海市教委科研创新项目(13ZZ042). (13ZZ042)

A PdO/CeO₂ catalyst was prepared by deposition-precipitation method and characterized with X-ray diffraction, high-resolution transmission electron microscopy, N₂ adsorption-desorption, X-ray photoelectron spectroscopy and Raman spectroscopy. The results show that the Pd is presented as Pd²⁺ in the catalyst. The interaction between the deposited PdO and CeO₂ increases the Ce³⁺ content. The catalytic activity of PdO/CeO₂ was tested in the heterogeneous Fenton-like degradation of acid orange 7 (AO7) and salicylic acid (SA), both in the dark and under visible irradiation. Deposition of PdO accelerates the Fen-ton-like degradation of SA, which reaches a maximum at 1.0 atom% PdO loading. A dye sensitization effect was seen with AO7 under visible irradiation. Dye sensitization promotes the regeneration of Ce³⁺ by interfacial peroxides species through interfacial electron injection. Consequently, the combined effects of PdO loading and visible light irradiating enhanced the Fenton-like activity to a reaction rate constant of 3.90 h^-1 for the 1.0 PdO/CeO₂, a ca. 50-fold improvement.
- Fenton-like reaction,
- Ceria,
- Palladium oxide,
- Degradation,
- Hydrogen peroxide
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沈阳化工大学材料科学与工程学院沈阳 110142

The enhanced Fenton-like catalytic performance of PdO/CeO2 for the degradation of acid orange 7 and salicylic acid

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通讯作者: 陈斌, bchen63@163.com

The enhanced Fenton-like catalytic performance of PdO/CeO₂ for the degradation of acid orange 7 and salicylic acid