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Citation: HUA Yingjie, WANG Chongtai, SUN Zhenfan, LIU Yanling, ZHOU Changsheng. Photocatalytic Degradation of Aniline by a Novel Photo-Fenton-Like System Consisting of PW₁₁O₃₉Fe(Ⅲ)(H₂O)^4-/H₂O₂[J]. Chinese Journal of Applied Chemistry, ;2012, 29(1): 63-68. doi: 10.3724/SP.J.1095.2012.00053 shu

Photocatalytic Degradation of Aniline by a Novel Photo-Fenton-Like System Consisting of PW₁₁O₃₉Fe(Ⅲ)(H₂O)^4-/H₂O₂

1.
School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China

Corresponding author: WANG Chongtai,
Received Date: 8 February 2011
Available Online: 30 March 2011
Fund Project: 国家自然科学基金(20963003) (20963003)海南省自然科学基金(509009) (509009)吉林省科技发展计划项目(20090595)资助项目 (20090595)

A novel photo-Fenton-like system consisting of PW₁₁O₃₉Fe(Ⅲ)(H₂O)^4-[PW₁₁Fe(Ⅲ)(H₂O)] was applied to degrade the aqueous bio-refractory organic pollutant aniline(ArNH₂).The homogeneous photo-catalysis of PW₁₁Fe(Ⅲ)(H₂O) for ArNH₂ degradation was studied in detail under an artificial UV irradiation in the presence of hydrogen peroxide(H₂O₂),in which the effects of initial ArNH₂,H₂O₂ and PW₁₁Fe(Ⅲ)(H₂O) concentration on the photo-catalytic rate of ArNH₂ degradation were examined.The experimental results show that a complete ArNH₂ degradation was obtained in less than 60 min in a pH=6.86 mixed phosphate solution containing 0.1 mmol/L PW₁₁Fe(Ⅲ)(H₂O)+0.2 mmol/L H₂O₂+0.1 mmol/L ArNH₂ under a 300 W Hg lamp irradiation,and a total organic carbon(TOC) removal of ca.52% was achieved.A mechanism of photocatalytic decomposition of H₂O₂ to hydroxyl radicals by PW₁₁Fe(Ⅲ)(H₂O) was proposed and a comparison of ArNH₂ photo-catalytic degradation in acidic and neutral solutions was discussed.
- iron-substituted heteropolyanion,
- homogeneous photocatalysis,
- aniline degradation,
- hydrogen peroxide
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Photocatalytic Degradation of Aniline by a Novel Photo-Fenton-Like System Consisting of PW11O39Fe(Ⅲ)(H2O)4-/H2O2

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Photocatalytic Degradation of Aniline by a Novel Photo-Fenton-Like System Consisting of PW₁₁O₃₉Fe(Ⅲ)(H₂O)^4-/H₂O₂