Plasma-liquid synthesis of MoOx and WO3 as potential photocatalysts.,Dalton Transactions

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Plasma-liquid synthesis of MoOx and WO3 as potential photocatalysts.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-05-19 , DOI: 10.1039/d0dt00834f
Anna Khlyustova ₁ , Nikolay Sirotkin ₁ , Anton Kraev ₁ , Valeriy Titov ₁ , Alexander Agafonov ₁

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Plasmas in contact with liquids represent a green chemistry method for the synthesis of metal oxides. In this work, underwater plasma was used for the synthesis of molybdenum and tungsten oxides. The obtained samples were analyzed by various techniques. Results showed that underwater plasma with Mo electrodes allows obtaining non-stoichiometric molybdenum oxide (MoOx). In the case of tungsten electrodes, monoclinic WO3 was formed. The synthesized oxides have a wide band gap (3.21 eV for MoOx and 3.27 eV for WO3). The photocatalytic and sorption activities of the synthesized oxides towards the decomposition of cationic and anionic dyes (Methylene Blue, Rhodamine B, and Reactive Red 6C) were studied. MoOx shows excellent photocatalytic performance under UV and visible light irradiation. The photocatalytic activity of WO3 under visible light is less than that under UV irradiation.

中文翻译：

等离子体-液体合成的MoOx和WO3作为潜在的光催化剂。

与液体接触的等离子体代表了合成金属氧化物的绿色化学方法。在这项工作中，水下等离子体被用于合成钼和氧化钨。通过各种技术分析获得的样品。结果表明，带有Mo电极的水下等离子体允许获得非化学计量的氧化钼（MoOx）。在钨电极的情况下，形成了单斜晶WO3。合成的氧化物具有宽带隙（MoOx为3.21 eV，WO3为3.27 eV）。研究了合成氧化物对阳离子和阴离子染料（亚甲基蓝，若丹明B和活性红6C）分解的光催化和吸附活性。MoOx在紫外线和可见光照射下显示出出色的光催化性能。

更新日期：2020-04-02

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