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An investigation on the synthesis and catalytic activities of pure and Cu-doped zinc oxide nanoparticles

机译：纯铜掺杂氧化锌纳米粒子的合成及催化活性研究

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The typical polyol reduction method, where PVP was used as capping agent is aimed to synthesize pure and Cu-doped ZnO nanoparticles (NPs). The spherical morphology of as-synthesized NPs was observed under SEM. The NPs having Zn, O, and Cu as major constituents were observed by SEM coupled with EDX. The EDX confirmed the Zn, O, and Cu as major elements of as-synthesized NPs. The X-ray diffraction (XRD) studies demonstrated crystalline hexagonal structure in all the samples. The band gap of the NPs was determined using UV–vis spectroscopy. The catalytic activities of as-prepared material were investigated for the degradation of dyes like; Methyl Blue (MB), Methyl Red (MR), Thymol Blue (TB), and Alizarine Red.S (ARS), in the presence of H_(2)O_(2). A drastic increase in catalytic activity was observed with the increased concentration of Cu; particularly for MB. All experiments were carried out under mild and environment friendly conditions i.e. without irradiating by sun or UV light. The material was found promising and feasible catalyst for non-photo degradation of dyes, which are present in the wastewaters produced from textile and printing industries.
机译：将PVP用作封端剂的典型多元醇还原方法旨在合成纯铜掺杂的ZnO纳米颗粒（NPs）。在扫描电镜下观察了合成后的NP的球形形态。通过SEM和EDX结合观察到以Zn，O和Cu为主要成分的NP。 EDX证实了Zn，O和Cu是合成后的NP的主要元素。 X射线衍射（XRD）研究表明，所有样品均具有晶体六边形结构。 NP的带隙使用紫外可见光谱法测定。研究了所制得材料的催化活性，以降解类似的染料。在H_（2）O_（2）存在下，甲基蓝（MB），甲基红（MR），百里香酚蓝（TB）和茜素红（SRS）。观察到随着铜浓度的增加，催化活性急剧增加。特别是对于MB。所有实验均在温和且环境友好的条件下进行，即不受阳光或紫外线照射。该材料被发现是有前景且可行的催化剂，用于染料的非光降解，这些染料存在于纺织和印刷工业产生的废水中。

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