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Prussian blue analogue derived magnetic carbon/cobalt/iron nanocomposite as an efficient and recyclable catalyst for activation of peroxymonosulfate.
Chemosphere. 2017 Jan; 166:146-156.C

Abstract

A Prussian blue analogue, cobalt hexacyanoferrate Co3[Fe(CN)6]2, was used for the first time to prepare a magnetic carbon/cobalt/iron (MCCI) nanocomposite via one-step carbonization of Co3[Fe(CN)6]2. The resulting MCCI consisted of evenly-distributed cobalt and cobalt ferrite in a porous carbonaceous matrix, making it an attractive magnetic heterogeneous catalyst for activating peroxymonosulfate (PMS). As Rhodamine B (RhB) degradation was adopted as a model test for evaluating activation capability of MCCI, factors influencing RhB degradation were thoroughly examined, including MCCI and PMS dosages, temperature, pH, salt and radical scavengers. A higher MCCI dosage noticeably facilitated the degradation kinetics, whereas insufficient PMS dosage led to ineffective degradation. RhB degradation by MCCI-activated PMS was much more favorable at high temperatures and under neutral conditions. The presence of high concentration of salt slightly interfered with RhB degradation by MCCI-activated PMS. Through examining effects of radical scavengers, RhB degradation by MCCI-activated PMS can be primarily attributed to sulfate radicals instead of a combination of sulfate and hydroxyl radicals. Compared to Co3O4, a typical catalyst for PMS activation, MCCI also exhibited a higher catalytic activity for activating PMS. In addition, MCCI was proven as a durable and recyclable catalyst for activating PMS over multiple cycles without efficiency loss and significant changes of chemical characteristics. These features demonstrate that MCCI, simply prepared from a one-step carbonization of Co3[Fe(CN)6]2 is a promising heterogeneous catalyst for activating PMS to degrade organic pollutants.

Authors+Show Affiliations

Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan. Electronic address: linky@nchu.edu.tw.Department of Environmental Engineering, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung, Taiwan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27693875

Citation

Lin, Kun-Yi Andrew, and Bo-Jau Chen. "Prussian Blue Analogue Derived Magnetic Carbon/cobalt/iron Nanocomposite as an Efficient and Recyclable Catalyst for Activation of Peroxymonosulfate." Chemosphere, vol. 166, 2017, pp. 146-156.
Lin KA, Chen BJ. Prussian blue analogue derived magnetic carbon/cobalt/iron nanocomposite as an efficient and recyclable catalyst for activation of peroxymonosulfate. Chemosphere. 2017;166:146-156.
Lin, K. A., & Chen, B. J. (2017). Prussian blue analogue derived magnetic carbon/cobalt/iron nanocomposite as an efficient and recyclable catalyst for activation of peroxymonosulfate. Chemosphere, 166, 146-156. https://doi.org/10.1016/j.chemosphere.2016.09.072
Lin KA, Chen BJ. Prussian Blue Analogue Derived Magnetic Carbon/cobalt/iron Nanocomposite as an Efficient and Recyclable Catalyst for Activation of Peroxymonosulfate. Chemosphere. 2017;166:146-156. PubMed PMID: 27693875.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Prussian blue analogue derived magnetic carbon/cobalt/iron nanocomposite as an efficient and recyclable catalyst for activation of peroxymonosulfate. AU - Lin,Kun-Yi Andrew, AU - Chen,Bo-Jau, Y1 - 2016/09/29/ PY - 2016/07/09/received PY - 2016/09/06/revised PY - 2016/09/17/accepted PY - 2016/10/4/pubmed PY - 2017/3/1/medline PY - 2016/10/4/entrez KW - Carbon KW - Cobalt KW - Cobalt hexacyanoferrate KW - Iron KW - Peroxymonosulfate KW - Prussian blue analogue SP - 146 EP - 156 JF - Chemosphere JO - Chemosphere VL - 166 N2 - A Prussian blue analogue, cobalt hexacyanoferrate Co3[Fe(CN)6]2, was used for the first time to prepare a magnetic carbon/cobalt/iron (MCCI) nanocomposite via one-step carbonization of Co3[Fe(CN)6]2. The resulting MCCI consisted of evenly-distributed cobalt and cobalt ferrite in a porous carbonaceous matrix, making it an attractive magnetic heterogeneous catalyst for activating peroxymonosulfate (PMS). As Rhodamine B (RhB) degradation was adopted as a model test for evaluating activation capability of MCCI, factors influencing RhB degradation were thoroughly examined, including MCCI and PMS dosages, temperature, pH, salt and radical scavengers. A higher MCCI dosage noticeably facilitated the degradation kinetics, whereas insufficient PMS dosage led to ineffective degradation. RhB degradation by MCCI-activated PMS was much more favorable at high temperatures and under neutral conditions. The presence of high concentration of salt slightly interfered with RhB degradation by MCCI-activated PMS. Through examining effects of radical scavengers, RhB degradation by MCCI-activated PMS can be primarily attributed to sulfate radicals instead of a combination of sulfate and hydroxyl radicals. Compared to Co3O4, a typical catalyst for PMS activation, MCCI also exhibited a higher catalytic activity for activating PMS. In addition, MCCI was proven as a durable and recyclable catalyst for activating PMS over multiple cycles without efficiency loss and significant changes of chemical characteristics. These features demonstrate that MCCI, simply prepared from a one-step carbonization of Co3[Fe(CN)6]2 is a promising heterogeneous catalyst for activating PMS to degrade organic pollutants. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/27693875/Prussian_blue_analogue_derived_magnetic_carbon/cobalt/iron_nanocomposite_as_an_efficient_and_recyclable_catalyst_for_activation_of_peroxymonosulfate_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(16)31262-0 DB - PRIME DP - Unbound Medicine ER -