Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen
Dissolved oxygen (DO) content is an essential indicator for evaluating the quality of the water body and the main parameter for water quality monitoring. The development of high-precision DO detection methods is of great significance. This paper reports an integrated optofluidic device for the high...
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MDPI AG
2020-04-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/11/4/383 |
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| author | Yunfeng Zuo Longfei Chen Xuejia Hu Fang Wang Yi Yang |
| author_facet | Yunfeng Zuo Longfei Chen Xuejia Hu Fang Wang Yi Yang |
| author_sort | Yunfeng Zuo |
| collection | DOAJ |
| description | Dissolved oxygen (DO) content is an essential indicator for evaluating the quality of the water body and the main parameter for water quality monitoring. The development of high-precision DO detection methods is of great significance. This paper reports an integrated optofluidic device for the high precision measurement of dissolved oxygen based on the characteristics of silver nanoprisms. Metal nanoparticles, especially silver nanoprisms, are extremely sensitive to their surroundings. In glucose and glucose oxidase systems, dissolved oxygen will be transformed into H<sub>2</sub>O<sub>2</sub>, which affects the oxidation and erosion process of nanoprisms, then influences the optical properties of nanoparticles. By detecting the shift in the plasma resonance peak of the silver nanoparticles, the dissolved oxygen (DO) content can be determined accurately. Great reconfigurability is one of the most significant advantages of the optofluidic device. By simply adjusting the flow rate ratio between the silver nanoprisms flow and the water sample flow, real-time continuous adjustment of the detection ranges of DO from 0 to 16 mg/L can be realized dynamically. The detection limit of this device is as low as 0.11 µM (3.52 µg/L) for DO measurement. Thus, the present optofluidic system has a wide range of potential applications in fields of biomedical analyses and water sensing. |
| first_indexed | 2024-03-10T20:39:57Z |
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| id | doaj.art-6599510898a54bdfb3b3de166becfc1a |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T20:39:57Z |
| publishDate | 2020-04-01 |
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| series | Micromachines |
| spelling | doaj.art-6599510898a54bdfb3b3de166becfc1a2023-11-19T20:44:01ZengMDPI AGMicromachines2072-666X2020-04-0111438310.3390/mi11040383Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved OxygenYunfeng Zuo0Longfei Chen1Xuejia Hu2Fang Wang3Yi Yang4Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, ChinaKey Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, ChinaDissolved oxygen (DO) content is an essential indicator for evaluating the quality of the water body and the main parameter for water quality monitoring. The development of high-precision DO detection methods is of great significance. This paper reports an integrated optofluidic device for the high precision measurement of dissolved oxygen based on the characteristics of silver nanoprisms. Metal nanoparticles, especially silver nanoprisms, are extremely sensitive to their surroundings. In glucose and glucose oxidase systems, dissolved oxygen will be transformed into H<sub>2</sub>O<sub>2</sub>, which affects the oxidation and erosion process of nanoprisms, then influences the optical properties of nanoparticles. By detecting the shift in the plasma resonance peak of the silver nanoparticles, the dissolved oxygen (DO) content can be determined accurately. Great reconfigurability is one of the most significant advantages of the optofluidic device. By simply adjusting the flow rate ratio between the silver nanoprisms flow and the water sample flow, real-time continuous adjustment of the detection ranges of DO from 0 to 16 mg/L can be realized dynamically. The detection limit of this device is as low as 0.11 µM (3.52 µg/L) for DO measurement. Thus, the present optofluidic system has a wide range of potential applications in fields of biomedical analyses and water sensing.https://www.mdpi.com/2072-666X/11/4/383optofluidicsdissolved oxygensilver nanoprismscolorimetry |
| spellingShingle | Yunfeng Zuo Longfei Chen Xuejia Hu Fang Wang Yi Yang Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen Micromachines optofluidics dissolved oxygen silver nanoprisms colorimetry |
| title | Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen |
| title_full | Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen |
| title_fullStr | Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen |
| title_full_unstemmed | Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen |
| title_short | Silver Nanoprism Enhanced Colorimetry for Precise Detection of Dissolved Oxygen |
| title_sort | silver nanoprism enhanced colorimetry for precise detection of dissolved oxygen |
| topic | optofluidics dissolved oxygen silver nanoprisms colorimetry |
| url | https://www.mdpi.com/2072-666X/11/4/383 |
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