| Autor: |
Man-tang, Chen, Zhou, Song, Nan, Wang, Yao-bin, Ding, Hai-xing, Liao, Li-hua, Zhu |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Huan jing ke xue= Huanjing kexue. 36(1) |
| ISSN: |
0250-3301 |
| Popis: |
Silver bismuth oxide(BSO) was prepared by a simple ion exchange-coprecipitation method with AgNO3 and NaBiO, .2H2O as raw materials, and then used to oxidatively degrade tetrabromobisphenol A(TBBPA). Effects of the molar ratio of Ag/Bi during BSO preparation and the BSO dosage on the degradation of TBBPA were investigated. The results showed that under the optimized conditions (i.e., the Ag/Bi molar ratio of 1:1, BSO dosage of 1 g x L(-1), 40 mg x L(-1) of TBBPA was completely degraded and the removal of total organic carbon achieved more than 80% within 7 min. The degradation intermediates of TBBPA were identified by ion chromatography, gas chromatograph-mass spectrometer and X-ray photoelectron spectroscopy. The degradation pathway of TBBPA included the debromination, the cleavage of tert-butyl group and the open epoxidation of benzene ring. Based on a quenching study of NaN3, singlet oxygen was proved to play a dominant role in the TBBPA degradation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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