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首页> 外文期刊>ChemPlusChem >A Biotemplating Route for the Synthesis of Hierarchical Fe 2 2 O 3 3 with Highly Dispersed Carbon as Electron‐Transfer Channel
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A Biotemplating Route for the Synthesis of Hierarchical Fe 2 2 O 3 3 with Highly Dispersed Carbon as Electron‐Transfer Channel

机译:具有高度分散的碳作为电子传输通道的分层Fe 2 2 O 3 3合成的生物化途径

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摘要

Abstract Although the preparation of carbon composites has made great progress, the construction of systems comprising uniformly dispersed carbon as a framework to link active constituents still remains a challenge. Herein, a hierarchical Fe 2 O 3 /C composite was synthesized in a one‐step biotemplating route, where agarose was firstly reacted with Fe 3+ and Ca 2+ ions, which resulted in a competitive interaction between these ions and the hydroxy groups, then partly calcined to achieve the final product that consisted of α‐Fe 2 O 3 nanoparticles embedded in highly dispersed carbon. The carbon within the composite acts as an efficient photoelectron transfer channel to improve conductivity during photocatalysis. The hierarchical Fe 2 O 3 /C composite exhibited a photodegradation rate constant (k) of 0.091?min ?1 , more than four times that of α‐Fe 2 O 3 (0.020?min ?1 ).
机译:摘要虽然碳复合材料的制备取得了巨大的进展,但是制造包含均匀分散的碳的系统作为链接活性成分的框架仍然是一个挑战。 在此,在一步的生物级途径中合成了分层Fe 2 O 3 / C复合材料,其中琼脂糖首先与Fe 3+和Ca 2+离子反应,这导致这些离子和羟基之间的竞争性相互作用, 然后部分煅烧以实现由嵌入在高度分散的碳中的α-Fe 2 O 3纳米颗粒组成的最终产物。 复合材料内的碳作为有效的光电子传递通道,以改善光催化期间的电导率。 分层Fe 2 O 3 / C复合材料表现出0.091Ω·min?1的光降解速率常数(k),α-Fe 2 O 3的四倍以上(0.020?min?1)。

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  • 来源
    《ChemPlusChem》 |2020年第1期|共6页
  • 作者单位

    Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education;

    Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education;

    Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education;

    Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

    agarose; biotemplating; electron transfer; iron oxide; photocatalysis;

    机译:琼脂糖;生物预期;电子转移;氧化铁;光催化;

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