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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Improved Chemiluminescence in Fenton-Like Reaction via Dodecylbenzene-Sulfonate-lntercalated Layered Double Hydroxides
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Improved Chemiluminescence in Fenton-Like Reaction via Dodecylbenzene-Sulfonate-lntercalated Layered Double Hydroxides

机译:十二烷基苯磺酸盐嵌入层状双氢氧化物改善了芬顿样反应中的化学发光

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摘要

The interlamellar dodecylbenzene sulfonate (DBS) in layered double hydroxides (LDHs) can amplify an ultraweak chemiluminescence (CL) from Fenton-like reaction (Co(II) + H2O2 + OH~). The CL enhancement mechanism of the intercalated DBS on the H2O2-Co(II) CL was investigated by CL spectrum, radical scavengers, powder X-ray diffraction measurements, scanning electron microscope images, transmission electron microscopy images, Fourier transform infrared spectroscopy, electronic spinning resonance measurements, and elemental analysis techniques. The hydrophobic microenviron-ment of the intercalated DBS in LDHs facilitated the formation of hydroxyl radical (·OH) by the reaction of Co(n) with H2O2 in alkaline medium. The abundant ·OH radical can easily react with the intercalated DBS in LDHs to form sulfite radical (·SO3~-). The recombination of ·SO3~- radical could generate an intermediate as the excited sulfur dioxide molecules (SO2~*) which generated strong CL emission centered at ~430 nm. Our experiments illustrated a powerful use of surfactant-intercalated LDHs in CL studies and could have potential applications in the quantitative determination of radical production.
机译:层状双氢氧化物(LDHs)中的层间十二烷基苯磺酸盐(DBS)可以放大类Fenton反应(Co(II)+ H2O2 + OH〜)产生的超弱化学发光(CL)。通过CL光谱,自由基清除剂,粉末X射线衍射测量,扫描电子显微镜图像,透射电子显微镜图像,傅立叶变换红外光谱,电子纺丝研究了插入式DBS在H2O2-Co(II)CL上的CL增强机理。共振测量和元素分析技术。 LDHs中插入的DBS的疏水微环境通过在碱性介质中Co(n)与H2O2的反应促进了羟基自由基(·OH)的形成。大量的·OH自由基很容易与LDH中插入的DBS反应形成亚硫酸根(·SO3〜-)。 ·SO3〜-自由基的重组可产生一种中间体,作为激发的二氧化硫分子(SO2〜*),产生强烈的CL发射,中心在〜430 nm。我们的实验说明了CL研究中表面活性剂插入的LDH的强大用途,并可能在定量测定自由基产生中具有潜在的应用。

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