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首页> 外文期刊>Micro & Nano Letters, IET >Facile hydrothermal synthesis and photocatalytic activity of rod-like nanosized silver tungstate
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Facile hydrothermal synthesis and photocatalytic activity of rod-like nanosized silver tungstate

机译：棒状纳米钨酸钨的简便水热合成及光催化活性

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摘要

Rod-like nanosized silver tungstate (Ag2WO4) was synthesised via a facile hydrothermal method and characterised by field emission scanning electron microscopy, X-ray diffraction, Raman spectroscopy and electron spin resonance spectroscopy. Under ultraviolet (UV) light, nearly complete degradation of rhodamine B (RhB) was observed in Ag2WO4 suspension after irradiation for 60 min, around 15% RhB was absorbed in the dark. However, more than 60% of methyl blue was absorbed in the dark and the rest was observed to be completely degraded upon UV light irradiation for 10 min. The formed superoxide (O2-) and hydroxyl (u000b7;OH) radicals, as well as photoinduced holes were considered to be the dominant active species in the photocatalytic process.
机译：通过一种简便的水热法合成了棒状纳米钨酸银（Ag 2 WO 4 ），并通过场发射扫描电子显微镜，X射线衍射，拉曼光谱和电子自旋共振光谱。在紫外线照射60分钟后，Ag 2 WO 4 悬浮液中的罗丹明B（RhB）几乎完全降解，吸收了约15％的RhB。在黑暗中。但是，在黑暗中吸收了超过60％的甲基蓝，观察到其余部分在UV光照射10分钟后会完全降解。形成的超氧化物（O 2 -）和羟基（u000b7; OH）自由基以及光致空穴被认为是光催化过程中的主要活性物质。

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