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Soft template induced phase selective synthesis of Fe2O3 nanomagnets: one step towards peroxidase-mimic activity allowing colorimetric sensing of thioglycolic acid

机译:软模板诱导的Fe2O3纳米磁磁蛋白的相位选择性合成:朝向过氧化物酶 - 模拟活性的一步,允许巯基乙酸的比色感测

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摘要

Different Schiff's base (SB) templates have been obtained to mediate phase selective synthesis of alpha- or gamma-Fe2O3 from the same temperature condition. The inherent phase transformation tendency (gamma-Fe2O3 to alpha-Fe2O3) is found to be inhibited. Again, the phase selective evolution emerges out of the binding modes of SBs which has been illustrated here. The nature of SBs governs the shape and size distribution of Fe2O3 NPs. As both the phases are magenetically active, easy magnetic separation of them widens their applicability in catalysis. Magnetically active both alpha- and gamma-Fe2O3 mimic interesting peroxidase like activity by oxidising colourless 3,3',5,5'-tetramethylbenzidine (TMB) to blue coloured oxidised product (Ox-TMB) in aqueous H2O2. These results prompted us to improvise further to detect thioglycolic acid (TGA) at a micromolar level which provides commercial applicability.
机译:已经获得了不同的Schiff的基础(Sb)模板以从相同的温度条件介导α-或γ-Fe2O3的相位选择性合成。 发现固有的相变趋势(γ-Fe2O3至alpha-Fe 2 O 3)被抑制。 同样,相位选择性进化出现在这里示出的SBS的结合模式中出现。 SBS的性质控制Fe2O3 NPS的形状和尺寸分布。 随着阶段的阶段都是活跃的,它们的易于磁分离在催化时扩大了它们的适用性。 通过在H 2 O 2水溶液中氧化无色3,3',5,5'-四甲基苯胺(TMB)至蓝色氧化产物(OX-TMB),磁活活性α-和γ-Fe 2 O 3类似于活性的相应活性酶。 这些结果促使我们进一步在微摩尔水平下进一步探测巯基乙酸(TGA),这提供商业适用性。

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  • 来源
    《RSC Advances》 |2016年第38期|共11页
  • 作者单位

    Indian Inst Technol Dept Chem Kharagpur 721302 W Bengal India;

    Indian Inst Technol Dept Chem Kharagpur 721302 W Bengal India;

    Indian Inst Technol Dept Chem Kharagpur 721302 W Bengal India;

    Indian Inst Technol Dept Chem Kharagpur 721302 W Bengal India;

    Indian Inst Technol Dept Chem Kharagpur 721302 W Bengal India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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