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Porous ZnO/Co3O4 heteronanostructures derived from nano coordination polymers for enhanced gas sorption and visible light photocatalytic applications

机译:多孔ZnO / CO3O4衍生自纳米配位聚合物的异系结构,用于增强气体吸附和可见光光催化应用

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摘要

Porous ZnO/Co3O4 heteronanostructures are successfully fabricated by a one-step solid state conversion of a novel [(Zn)(x)-(Co)(7-x)(BDC)(DHS)]center dot nH(2)O (x = 1, 3, 4, 6)] nano coordination polymers (NCPs). The precursor is prepared by one-pot wet chemical approach at room temperature without any surfactant using dihydroxy salophen ligand and 1,4-benzenedicarboxylic acid as the linkers in presence of zinc(II) acetate and cobalt(II) acetate in DMF solvent. Different weight ratios of the Zn/Co are fabricated in situ into the hetero-structures during the preparation of the NCPs to tune their physicochemical properties. The produced ZnO/Co3O4 nanostructure possesses relatively higher surface area (80-140 m(2) g(-1)) and having significant N-2 gas sorption capacity in comparison with reported materials. It is suggested that synergistic effect of each component, higher separation of electron and holes, high surface area and porous structure led to the promising visible light photocatalytic properties. The prepared mixed metal oxides show significant reusability in photocatalysis more than five times without losing their properties. Importantly, the mixed-metal NCPs could be applied as an effective route to generate not only binary oxide, but also ternary or quaternary oxide nanostructures with desired morphology and enhanced physicochemical properties.
机译:[ - (CO)(7-x)的(BDC)(DHS)(锌)(x)]的中心点NH(2)O(多孔氧化锌/四氧化三钴heteronanostructures通过新颖的一步法固态转化成功地制造X = 1,3,4,6)]纳米配位聚合物(的NCP)。该前体是通过在室温下的单釜湿化学方法使用的二羟基salophen配体和1,4-苯二羧酸,如锌(II),乙酸钴(II),乙酸在DMF溶剂的存在下制备的接头没有任何表面活性剂。锌/钴的不同重量比原位到异质结构制备的NCP的调整其物理化学性质的过程中制造。所产生的ZnO /纳米结构的Co3O4具有相对较高的表面积(80-140米(2)克(-1)),并具有与报道的材料相比显著N-2气体吸附能力。建议每个组件的那协同效应,电子和空穴,高表面积并导致有希望可见光光催化性能的多孔结构的更高的分离。所制备的混合金属氧化物表现出显著的可重用性在光催化其性质无损失的五倍以上。重要的是,混合金属的NCP可以应用作为一种有效的途径,以产生不仅二元氧化物,而且具有期望的形态和增强的物理化学性质三元或四元氧化物纳米结构。

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  • 来源
    《RSC Advances》 |2015年第83期|共11页
  • 作者单位

    Indian Inst Technol Dept Chem Environm Mat &

    Analyt Chem Lab Kharagpur 721302 W Bengal India;

    Indian Inst Technol Dept Chem Environm Mat &

    Analyt Chem Lab 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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