ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Catalytic performance improvement with metal ion changes for efficient, stable, and reusable superoxide dismutase–metalphosphates hybrid nanoflowers

Burcu Somtürk Yılmaz, Serkan Dayan, Nalan Özdemir, and Nilgün Kalaycioğlu Özpozan

Department of Chemistry, Faculty of Science, Erciyes University, Kayseri, Turkey

E-mail: ozdemirn@erciyes.edu.tr

Received: 18 October 2021  Accepted: 15 March 2022

Abstract:

Herein, for the first time, the flower-like enzyme–inorganic hybrid nanoflowers were synthesized using a superoxide dismutase (SOD) as organic material and selected some metal ions (Cu(II), Co(II), Mn(II) and Zn(II)) as inorganic parts at optimum pH value. The synthesis steps of SOD@metalphosphates hybrid nanoflowers were verified by XRD, FT-IR, FESEM, and EDX. The synthesized nanoflowers were utilized as a catalyst in the reduction of organic pollutants (2-nitrophenol (2-NP) and Rhodamine B (RhB)) with NaBH₄ in aqueous media for catalytic properties and susceptibility. The activities of both the substrate and the metal center of the catalyst were determined in the increasing rate order of RhB > 2-NP for substrate and SOD@Cu₃(PO₄)₂·3H₂O > SOD@Co₃(PO₄)₂·8H₂O > SOD@Mn₃(PO₄)₂·7H₂O > SOD@Zn₃(PO₄)₂^.4H₂O hNfs for catalysts. The catalytic data provided herein by using SOD@metalphosphates (SOD@Cu₃(PO₄)₂·3H₂O, SOD@Co₃(PO₄)₂·8H₂O, SOD@Mn₃(PO₄)₂·7H₂O and SOD@Zn₃(PO₄)₂·4H₂O) nanoflowers suggest that the materials can be effective catalysts for the water-based reduction reaction of organic pollutants.

Graphical abstract

Keywords: Hybrid nanoflowers; Superoxide dismutase; Reduction of organic pollutants; Catalysts

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02179-z

Chemical Papers 76 (7) 4245–4260 (2022)