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首页> 外文期刊>Advanced Functional Materials >Rapid Synthesis of Amino Acid Polyoxometalate Nanotubes by One-Step Solid-State Chemical Reaction at Room Temperature
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Rapid Synthesis of Amino Acid Polyoxometalate Nanotubes by One-Step Solid-State Chemical Reaction at Room Temperature

机译：一步式固态化学反应在室温下快速合成氨基酸多金属氧酸盐纳米管

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摘要

A novel and convenient method—solid-state chemical reaction at room temperature —is reported for the synthesis of amino acid polyoxometalate nanotubes. As a convenient synthesis method for nanomaterials, it may open up a new pathway for the fabrication of organic-inorganic hybrid materials with nanotubular structure. Here, three novel tyrosine (Tyr) polyoxometalate nanotubes, (HTyr)_3PMo_(12)O_(40)·3H_2O, (HTyr)_3PW_(12)O_(40)· 3H_2O, and (HTyr)_4SiW_(12)O_(40)5H_2O are successfully synthesized via a one-step solid-state chemical reaction at room temperature. Elemental analysis confirms the rationality of composition for the samples. Infrared spectroscopy, X-ray diffraction, and ~(31)P magic-angle spinning NMR results prove that the samples still possess Keggin-type structures. Scanning and transmission electron microscopies suggest that the three samples are comprised of nanotubes with remarkably uniform shape and size, with diameters from 50 to 150 nm and lengths of up to several micrometers. Cyclic voltammograms of samples in 1 mol L~(-1) H_2SO_4 indicate that three redox waves correspond to three two-electron processes resulting from the reduction/oxidation of the heteropoly anion.
机译：据报道，一种新颖且方便的方法-室温下的固态化学反应-用于合成氨基酸多金属氧酸盐纳米管。作为一种方便的纳米材料合成方法，可以为制备具有纳米管结构的有机-无机杂化材料开辟一条新途径。在这里，三个新颖的酪氨酸（Tyr）多金属氧酸盐纳米管（HTyr）_3PMo_（12）O_（40）·3H_2O，（HTyr）_3PW_（12）O_（40）·3H_2O和（HTyr）_4SiW_（12）O_（40在室温下通过一步固态化学反应成功合成了）5H_2O。元素分析证实了样品组成的合理性。红外光谱，X射线衍射和〜（31）P魔角旋转NMR结果证明样品仍具有Keggin型结构。扫描和透射电子显微镜检查表明，这三个样品由具有明显均匀形状和大小的纳米管组成，其直径为50至150 nm，长度可达几微米。样品在1 mol L〜（-1）H_2SO_4中的循环伏安图表明，三个氧化还原波对应于杂多阴离子的还原/氧化所产生的三个二电子过程。

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