https://scholars.lib.ntu.edu.tw/handle/123456789/395991
標題: | Concurrent oxidation and reduction of pentachlorophenol by bimetallic zerovalent Pd/Fe nanoparticles in an oxic water | 作者: | YANG-HSIN SHIH Chen, M. Y. Su, Y. F. Tso, C. P. |
關鍵字: | Activation energy; Adsorption; Dechlorination; Mineralization; Pd/Fe nanoparticles | 公開日期: | 2016 | 卷: | 301 | 起(迄)頁: | 416-423 | 來源出版物: | Journal of Hazardous Materials | 摘要: | Under the oxic condition, the most effective removal of pentachlorophenol (PCP) with Pd/Fe nanoparticles (NPs) is demonstrated as compared to the anoxic condition. Concurrent oxidation and reduction of polychlorinated compounds such as PCP by zerovalent Pd/Fe were first observed. The optimal Pd content of the bimetallic NPs is only around 0.54mgg-1 Fe. Increases in both dosage of Pd/Fe NPs and temperature enhance degradation rates and efficiency. The activation energy of 29kJ/mol indicates that the degradation is a surface-mediated mechanism. The removal mechanism also includes adsorption, which explains that the dechlorination of Cl on PCP molecules at ortho and meta positions is easier than that at para position. Overall, Pd/Fe NPs can apply directly to degrade polyhalogenated compounds in water without deaeration. © 2015 Elsevier B.V. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-84942531827&partnerID=40&md5=c5a120fb5ba0768d017d1672c2a277e7 http://scholars.lib.ntu.edu.tw/handle/123456789/395991 |
DOI: | 10.1016/j.jhazmat.2015.08.059 | SDG/關鍵字: | Adsorption; Chemical activation; Dechlorination; Degradation; Herbicides; Nanoparticles; Phenols; Anoxic conditions; Effective removals; Mineralization; Oxidation and reduction; Pd/Fe nanoparticles; Polychlorinated compounds; Polyhalogenated compounds; Removal mechanism; Activation energy; dissolved oxygen; iron nanoparticle; lead; pentachlorophenol; activation energy; adsorption; anoxic conditions; dechlorination; energy efficiency; iron; nanoparticle; oxidation; palladium; PCP; pollutant removal; reduction; adsorption; Article; catalysis; concentration (parameters); dechlorination; degradation; degradation kinetics; energy; mineralization; molecular mechanics; oxidation; reduction; surface property; temperature dependence; waste component removal |
顯示於: | 農業化學系 |
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