A Novel Biomaterial for Decolorization of Azo Dyes: Myoglobin-Zn(II) Assisted Hybrid Nanoflowers |
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Authors: | Cevahir Altinkaynak Merve Turk Nazlican Yangin Nalan Özdemir |
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Affiliation: | 1. Department of Plant and Animal Production, Avanos Vocational School, Nevsehir Haci Bektas Veli University, 50500 Nevsehir, Turkey;2. Department of Chemistry, Faculty of Science, Erciyes University, 38039 Kayseri, Turkey |
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Abstract: | Protein-inorganic hybrid nanoflowers are new multifunctional materials shown enhanced catalytic performance. Specially, they are used as catalyst and dye decolorizer via Fenton reaction. In this study, the Myoglobin-Zn (II) assisted hybrid nanoflowers (MbNFs@Zn) were fabricated by using myoglobin and zinc (II) ions in different synthesis conditions. The optimum morphology was characterized SEM, TEM, EDX, XRD, and FT-IR. The hemisphere and uniform morphology was obtained at pH 6 and 0.1 mg mL−1. The size of MbNFs@Zn are 5–6 μm. The encapsulation yield was ∼95 %. In the presence of H2O2, the peroxidase mimic activity of MbNFs@Zn was spectrophotometrically investigated in the different pH values (4–9). The highest peroxidase mimic activity was found as 3.378 EU/mg at pH 4. MbNFs@Zn was exhibited 0.28 EU/mg after eight cycles. MbNFs@Zn has lost about 92 % of its activity. The usability of MbNFs@Zn for decolorization of azo dyes such as Congo red (CR), and Evans blue (EB) was researched at different times, temperatures and concentrations. The decolorization efficiency was found maximum as 92.3 % and 88.4 % for EB and CR dyes, respectively. MbNFs@Zn has perfect properties such as enhanced catalytic performance, high decolorization efficiency, stability and reusability, and can be excellent potential materials for many industrial applications. |
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Keywords: | decolorization myoglobin protein-inorganic hybrid nanoflowers peroxidase mimic activity |
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