Colorimetric Determination Of Hydrogen Peroxide Based on Localized Surface Plasmon Resonance of Silver Nanoprisms Using a Microchannel Chip
Colorimetric Determination Of Hydrogen Peroxide Based on Localized Surface Plasmon Resonance of Silver Nanoprisms Using a Microchannel Chip
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DOI：
10.1080/00032719.2019.1586913
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发表时间：
2019-08-13
影响因子：
2
通讯作者：
Kato, Keizo
中科院分区：
文献类型：
--
作者：
Lertvachirapaiboon, Chutiparn;Kiyokawa, Itaru;Kato, Keizo
银纳米棱镜 (AgNPrs) 由于其局域表面等离子体共振而具有独特的光学现象，可导致可见光到近红外光谱区域的光消光。在这项研究中，我们提出使用智能手机摄像头对微通道中的银纳米棱柱进行比色测定。通过使用透射光捕获微通道中银纳米棱柱的胶体溶液的图像来进行图像采集。从记录的图像中提取红色、绿色和蓝色色度水平，以进一步量化银纳米棱柱。该技术用于过氧化氢（H2O2）的检测和比色测定。对于10至300μM的值，观察到绿色色度水平的变化和过氧化氢浓度之间良好的线性关系，R-2值为0.9670。我们预计，通过监测透射光图像颜色变化来量化银纳米棱柱和过氧化氢的方法将促进简单、快速和可靠的检测系统的开发，用于银纳米棱柱生产以及化学传感器应用中的质量控制。
Silver nanoprisms (AgNPrs) have unique optical phenomena due to their localized surface plasmon resonance that results in the extinction of light from the visible to the near-infrared spectral region. In this study, we propose the colorimetric determination of silver nanoprisms in microchannels using a smartphone camera. Image acquisition was performed by capturing an image of the colloidal solution of the silver nanoprisms in the microchannel using the transmitted light. Red, green, and blue chromaticity levels were extracted from the recorded images for further quantification of the silver nanoprisms. This technique was employed for the detection and colorimetric determination of hydrogen peroxide (H2O2). Good linearity between the change in the green chromaticity level and concentration of hydrogen peroxide was observed for values from 10 to 300 mu M with an R-2 value of 0.9670. We anticipate that the developed methodology for the quantification of silver nanoprisms and hydrogen peroxide by monitoring the change in color in the images of transmitted light will enhance the development of simple, rapid, and reliable detection systems for quality control in the production of silver nanoprisms as well as in chemical sensor applications.