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首页> 外文期刊>Journal of nano research >Low Temperature Synthesis of Elongated Triangular Bipyramidal ZnO Nanostructures for Photocatalytic Activity
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Low Temperature Synthesis of Elongated Triangular Bipyramidal ZnO Nanostructures for Photocatalytic Activity

机译：低温合成长三角双锥体ZnO纳米结构的光催化活性

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摘要

The manuscript reports wet chemical assisted low temperature synthesis of CTAB stabilized elongated triangular bipyramidal shape nanostructures of ZnO for photocatalytic degradation of methyle blue (MB) and congo red (CR) dyes. Physiochemical characterization has been carried out by X-ray diffraction, scanning electron microscope, transmission electron microscope and UV-visible spectroscope. Pure wurtzite structure of ZnO with crystallite size ~56 nm has been confirmed from X-ray study. Well dispersed particles with elongated triangular bipyramidal morphology have been observed through SEM. Fine resolved particles with varied aspect ratios ~80 X 200 ± 10 nm have been depicted by TEM images. UV-visible absorption analysis confirms the energy band gap of 3.43 eV for synthesized ZnO particles. Molecular composition and functional groups of CTAB were confirmed by FTIR spectroscopy. The potential applicability of the particles for photocatalytic degradation of MB and CR as standard analytical dyes was studied. Time bound study under UV irradiated source depicted more than 95% degradation of both dyes in separate experiments.
机译：该手稿报道了湿法化学辅助低温合成CTAB稳定的ZnO细长双三角锥体形状纳米结构，用于光催化降解甲基蓝（MB）和刚果红（CR）染料。已经通过X射线衍射，扫描电子显微镜，透射电子显微镜和UV-可见光谱仪进行了理化表征。 X射线研究已证实，微晶尺寸约为56 nm的纯ZnO纤锌矿结构。通过SEM观察到分散良好的具有拉长的三角形双锥体形态的颗粒。 TEM图像显示了纵横比〜80 X 200±10 nm的细分辨颗粒。紫外可见吸收分析确认合成的ZnO颗粒的能带隙为3.43 eV。 FTIR光谱证实了CTAB的分子组成和官能团。研究了颗粒对MB和CR作为标准分析染料的光催化降解的潜在适用性。在紫外线辐射源下进行的时限研究表明，在单独的实验中，两种染料的降解率均超过95％。

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