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Your search keyword '"Tao, Zhanhui"' showing total 23 results
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23 results on '"Tao, Zhanhui"'

18. Design and Preparation of Super Broadband Antireflection Coating

Author

唐晋发 Tang Jinfa, 艾曼灵 Ai Manlin, 顾培夫 Gu Peifu, 郑臻荣 Zheng Zhengrong, 张梅骄 Zhang Meijiao, 陈海星 Chen Haixing, and 陶占辉 Tao Zhanhui

Subjects
Materials science, business.industry, Broadband, Optoelectronics, Antireflection coating, business, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2009

19. A MnO2 nanosheet-based ratiometric fluorescent nanosensor with single excitation for rapid and specific detection of ascorbic acid.

Author

Lyu, Yanlong, Tao, Zhanhui, Lin, Xiaodong, Qian, Pengcheng, Li, Yunfei, Wang, Shuo, and Liu, Yaqing

Subjects
*DUAL fluorescence, *DETECTION limit, *FLUORESCENCE
Abstract

Ascorbic acid (AA) detection in biological sample and food sample is critical for human health. Herein, a MnO2 nanosheet (MnO2-NS)-based ratiometric fluorescent nanosensor has been developed for high sensitive and specific detection of AA. The MnO2-NS presents peroxidase-like activity and can oxidize non-fluorescent substrate of o-phenylenediamine (OPDA) into fluorescent substrate, presenting maximum fluorescence at 568 nm (F568). If MnO2-NS is premixed with AA, the MnO2-NS is then decomposed as Mn2+ by AA, decreasing the fluorescent intensity of F568. Meantime, AA is oxidized as dehydroascorbic acid (DHAA), which can react with OPDA to generate fluorescent substrate. A new fluorescence response is found at 425 nm (F425). The dual fluorescent responses can be excited with a universal excitation wavelength, simplifying the detection procedure. With F425/F568 as readout, limit of detection for AA reaches as low as 10.0 nM. Satisfactory recoveries are found for AA detection in serum and diverse beverages. The ratiometric strategy significantly eliminates false-negative and false-positive results, providing a cost-effective, rapid, and reliable way for AA detection in real sample. [ABSTRACT FROM AUTHOR]

Published
2019
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23. An Ultrasensitive Fluorescence Sensor with Simple Operation for Cu 2+ Specific Detection in Drinking Water.

Author

Gao J, Yin J, Tao Z, Liu Y, Lin X, Deng J, and Wang S

Abstract

Whether short-term or long-term, overexposure to an abnormal amount of copper ion does significant harm to human health. Considering its nonbiodegradability, it is critical to sensitively detect copper ion. Herein, a novel fluorescent strategy with a "turn-on" signal was developed for highly sensitive and specific detection of copper ion (Cu 2+ ). In the present investigation, we found that Cu 2+ exhibits excellent peroxidase-like catalytic activity toward oxidizing the nonfluorescent substrate of Amplex Red into the product of resofurin with outstanding fluorescence emission under the aid of H 2 O 2 . Thus, an enzyme-free and label-free sensing system was constructed for copper ion detection with quite simple operation. To ensure the detection sensitivity and reproducibility, the amount of H 2 O 2 and incubation time were optimized. The limit of detection can reach as low as 1.0 nM. In addition, the developed assay demonstrated excellent specificity and could be utilized to detect copper ion in water samples including tap water and bottled purified water without standing recovery., Competing Interests: The authors declare no competing financial interest.

Published
2018
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