Yolk‐shell structured Ni‐doped silica with high specific surface area and excellent thermal stability has been synthesized via a simple surfactant assisted sol‐gel mediated hydrothermal method using hexadecyltrimethylammonium bromide (CTAB) as a structure‐directing agent in water‐ethanol mixed solvent. After calcining off the organic surfactant, the resulting material shows crystallinity in powder X‐ray diffraction (XRD) analysis with formation of nickel hydrosilicate phase, Ni₃Si₂O₅(OH)₄. The mesoporosity, nanostructure and morphology of the material have been confirmed by N₂ sorption, transmission (TEM) and field‐emission scanning electron microscopic (FESEM) analysis, respectively. Ni‐silica yolk‐shell nanostructure with around 30 wt% Ni has surface area ca. 500 m²/g with pore width ca. 3.8 nm and 400–500 nm particle size. X‐ray photoelectron spectroscopic (XPS) study has also been carried out to confirm the presence of Ni(II) species in the material. This yolk‐shell Ni‐doped‐silica mesostructure has been utilized successfully for non‐enzymatic glucose detection at room temperature via electrochemical sensing of D‐glucose analyte in 0.1 M NaOH solution.

中文翻译：

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卵黄结构的镍掺杂介孔二氧化硅的一锅法简便合成及其在无酶葡萄糖传感器中的应用

采用十六烷基三甲基溴化铵（CTAB）作为结构导向剂，在水-乙醇混合溶剂中，通过简单的表面活性剂辅助溶胶-凝胶介导的水热法合成了具有高比表面积和优异热稳定性的蛋黄壳型镍掺杂二氧化硅。煅烧掉有机表面活性剂后，所得材料在粉末X射线衍射（XRD）分析中显示出结晶度，并形成了氢硅酸镍相Ni ₃ Si ₂ O ₅（OH）₄。N ₂证实了材料的介孔性，纳米结构和形态吸附，透射（TEM）和场发射扫描电子显微镜（FESEM）分析。提高了约30％的Ni的Ni-二氧化硅蛋黄-壳纳米结构具有表面积CA。500米² / g的与孔宽度CA。粒径为3.8 nm和400–500 nm。还进行了X射线光电子能谱（XPS）研究，以确认材料中存在Ni（II）物种。通过在0.1 M NaOH溶液中对D-葡萄糖分析物进行电化学检测，这种蛋黄型Ni掺杂二氧化硅介孔结构已成功用于室温非酶法葡萄糖检测。