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首页> 外文期刊>Applied Surface Science >Evolution of photo-catalytic properties of reactive plasma processed nano-crystalline titanium dioxide powder
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Evolution of photo-catalytic properties of reactive plasma processed nano-crystalline titanium dioxide powder

机译：反应性等离子体处理的纳米二氧化钛粉末光催化性能的演变

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Nano-crystalline titanium oxide powder was synthesized by reactive plasma processing using titanium hydride as the precursor powder. Photo-catalytic properties of the product were evaluated by monitoring the degradation of methylene blue dye solution. The photo-catalytic activity of plasma-synthesized nano-sized titania powder could be enhanced considerably by incorporating surface Ti~(3+) sites and hydroxyl groups. Thermal treatment of the as-synthesized powder in flowing Ar-H_2 helped to incorporate surface Ti~(3+) and hydroxyl species, resulting in considerable increase in the catalytic activity. Subsequent hydrothermal treatment of the powder led to a five-fold increase in the photo-catalytic activity.
机译：以氢化钛为前驱体粉末，通过反应等离子体工艺合成了纳米晶态氧化钛粉末。通过监测亚甲基蓝染料溶液的降解来评估产物的光催化性能。通过掺入表面Ti〜（3+）位和羟基，可以显着提高等离子体合成的纳米二氧化钛粉末的光催化活性。合成的粉末在流动的Ar-H_2中进行热处理有助于结合表面Ti〜（3+）和羟基，从而大大提高了催化活性。粉末的后续水热处理导致光催化活性提高了五倍。

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