Correlation between ?Abs, ?RGB (red) and stearic acid destruction rates using commercial self-cleaning glass as the photocatalyst
Correlation between ?Abs, ?RGB (red) and stearic acid destruction rates using commercial self-cleaning glass as the photocatalyst
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使用商用自清洁玻璃作为光催化剂时，Abs、RGB（红色）和硬脂酸破坏率之间的相关性
DOI：
10.1016/j.cattod.2013.11.023
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发表时间：
2014
期刊：
影响因子：
5.3
通讯作者：
Mills A
中科院分区：
文献类型：
--
作者：
Mills A
一种基于Resazurin(Rz)的光催化剂指示剂墨水被用来测试商业自清洁玻璃的活性，使用UV-Vis光谱和数字摄影来监测墨水的光催化剂驱动的颜色变化。UV-Vis光谱允许监测作为照射时间的函数的胶片吸光度ΔAbs的变化，而数字摄影用于监测RGB值的红色分量的伴随变化，即ΔRGB(红色)。初步工作表明，ΔAbstandΔRGB(RED)Ta随辐照时间t的变化呈线性相关。这些参数的变化速度也与不同光照下硬脂酸在自清洁玻璃上的氧化破坏速度线性相关。这项工作表明，可以使用廉价的数字摄影来测量自清洁玻璃的光催化剂活性，即改变Rz光催化剂指示剂墨水的颜色所需的时间，作为更昂贵的基于实验室的技术的替代，例如UV-Vis分光光度法。
A resazurin (Rz) based photocatalyst indicator ink is used to test the activity of a commercial self-cleaning glass, using UV–vis spectroscopy and digital photography to monitor the photocatalyst-driven change in colour of the ink. UV–vis spectroscopy allows the change in film absorbance, ΔAbs, to be monitored as a function of irradiation time, whereas digital photography is used to monitor the concomitant change in the red component of the RGB values, i.e. ΔRGB (red). Initial work reveals the variation in ΔAbstand ΔRGB (red)tas a function of irradiation time,t, are linearly correlated. The rates of change of these parameters are also linearly correlated to the rates of oxidative destruction of stearic acid on self-cleaning glass under different irradiances. This work demonstrates that a measure of photocatalyst activity of self-cleaning glass, i.e. the time taken to change the colour of an Rz photocatalyst indicator ink, can be obtained using inexpensive digital photography, as alternative to more expensive lab-based techniques, such as UV–vis spectrophotometry.