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首页> 外文期刊>Separation and Purification Technology >Photo-oxidation of gas-phase cyclohexane species over nanostructured TiO2 fabricated by different strategies
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Photo-oxidation of gas-phase cyclohexane species over nanostructured TiO2 fabricated by different strategies

机译：不同策略制备的纳米结构TiO2上气相环己烷物种的光氧化

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TiO2 photocatalyst Degussa P25 was modified by three methods: SO_4~(2-) acidification (labeled as STH), SO_4~(2-) acidification combined with microwave irradiation (labeled as STW), and microwave irradiation (labeled as WT), respectively. FT-IR and XRD were used to characterize the structural properties of these TiCh samples, whereas surface photovoltage spectroscopy (SPS) provided important information on the photoelectric properties. The photo-oxidation of gaseous cyclohexane over P25, STH, STW and WT was monitored by in-situ infrared technology. The experimental results demonstrated that the modified TiO2 samples were more active than the original P25 and followed this order: WT>STW>STH>P25. During the photocatalytic oxidation of cyclohexane over WT, cyclohexane was mineralized into carbon dioxide and water. Moreover, CO was also produced in small amount.
机译：TiO2光催化剂Degussa P25可以通过三种方法进行改性：分别将SO_4〜（2-）酸化（标记为STH），SO_4〜（2-）酸化与微波辐射（标记为STW）和微波辐射（标记为WT）相结合。 。 FT-IR和XRD用来表征这些TiCh样品的结构性质，而表面光电压谱（SPS）提供了有关光电性质的重要信息。用原位红外技术监测气态环己烷在P25，STH，STW和WT上的光氧化。实验结果表明，改性后的TiO2样品比原始P25具有更高的活性，并遵循以下顺序：WT> STW> STH> P25。在WT上环己烷的光催化氧化过程中，环己烷矿化成二氧化碳和水。此外，还少量产生了CO。

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