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首页> 外文期刊>Catalysis science & technology >In-built Tb4+/Tb3+ redox centers in terbium-doped bismuth molybdate nanograss for enhanced photocatalytic activity
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In-built Tb4+/Tb3+ redox centers in terbium-doped bismuth molybdate nanograss for enhanced photocatalytic activity

机译：内置在terbium-doped Tb4 + / Tb3 +氧化还原中心钼酸铋为增强之外光催化活性

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摘要

A series of terbium-doped Bi2MoO6 with different Tb contents were synthesized using a hydrothermal method. The crystalline structure, surface area, morphology, chemical state and optical properties were analyzed in detail. The photocatalytic activity of the samples was evaluated by degradation of organics under visible light irradiation. The results indicated that doping of terbium ions could obviously improve the photocatalytic activity of Bi2MoO6, which was attributed to the generation of Tb4+/Tb3+ redox centers in terbium-doped Bi2MoO6. The photoluminescence (PL) spectroscopy, photocurrent measurement and active species trapping experiments suggest that the recombination of photo-generated electron-hole pairs was efficiently restrained by a trapping-releasing process between the Tb4+ and Tb3+ ions.
机译：一系列terbium-doped Bi2MoO6不同结核病内容使用水热合成方法。形态学、化学状态和光学性质详细分析了。样品的评估活动降解有机物的可见光辐照。铽离子能明显改善Bi2MoO6催化活性的,归因于Tb4 + / Tb3 +氧化还原的一代中心terbium-doped Bi2MoO6。光致发光(PL)光谱,光电流测量和活跃的物种被困实验表明,复合的photo-generated电子空穴对是有效地抑制trapping-releasingTb4 +和Tb3 +离子之间的过程。

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