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The UV/Fenton Degradation of Tetrabromobisphenol A Catalyzed by Nanocrystalline Chromium Substituted Magnetite
Zhong, YH; Liang, XL; He, ZS; Tan, W; He, HP; Zhu, RL; Zhong, Y; Zhu, JX; Yuan, P; Jiang, Z
2014
Source PublicationJOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN1533-4880
Volume14Issue:9Pages:7307—7314
AbstractThe heterogeneous UV/Fenton degradation of tetrabromobisphenol A (TBBPA) catalyzed by nanocrystalline Fe3O4 and Fe2.04Cr0.96O4 was investigated, with focus on the influence of UV light and initial pH, degradation pathways and effect of Cr substation. The catalysts were prepared by a precipitation-oxidation method and characterized by chemical analysis, XRD, XAFS, TG-DSC, BET surface area and magnetometer. At pH 6.7 and under UV irradiation, almost complete degradation of TBBPA by Fe2.04Cr0.95O4 was accomplished within 240 min, and the leaching Fe ions were negligible. The substitution of chromium greatly increased the BET specific surface area and surface hydroxyl amount, which improved the heterogeneous UV/Fenton catalytic activity of magnetite. Moreover, Cr3+ on the octahedral sites enhanced the electron transfer process in the magnetite structure to accelerate the (OH)-O-center dot generation. The produced (OH)-O-center dot radicals preferentially attacked the C-Br bonds of TBBPA and then beta-cleavaged the C-C bonds between benzene rings and isopropyl groups. The above results are of great significance for well understanding the effect of transition metal substitution on the UV/Fenton catalytic activity of magnetite and prospecting the application of magnetite minerals in environmental purification.
KeywordMethylene-blue Iron-oxide Orange-ii Hydrogen-peroxide Fenton Catalyst Azo-dyes Fe Adsorption Nanoparticles Decomposition
Indexed BySCI
Language英语
WOS IDWOS:000335873900116
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14499
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Zhong, YH,Liang, XL,He, ZS,et al. The UV/Fenton Degradation of Tetrabromobisphenol A Catalyzed by Nanocrystalline Chromium Substituted Magnetite[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2014,14(9):7307—7314.
APA Zhong, YH.,Liang, XL.,He, ZS.,Tan, W.,He, HP.,...&Jiang, Z.(2014).The UV/Fenton Degradation of Tetrabromobisphenol A Catalyzed by Nanocrystalline Chromium Substituted Magnetite.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,14(9),7307—7314.
MLA Zhong, YH,et al."The UV/Fenton Degradation of Tetrabromobisphenol A Catalyzed by Nanocrystalline Chromium Substituted Magnetite".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 14.9(2014):7307—7314.
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