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Your search keyword '"Miao, Fengjuan"' showing total 348 results
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348 results on '"Miao, Fengjuan"'

35. Nickel foam-loaded Co-MOF@TiO2/MoS2 as electrode materials for dual-function devices for glucose detection and hydrogen evolution.

Author

Miao, Fengjuan, Lu, Yanan, Tao, Bairui, Zhao, Man, and Chu, Paul K.

Subjects
*HYDROGEN evolution reactions, *CHEMICAL detectors, *STANDARD hydrogen electrode, *HYDROGEN analysis, *COMPOSITE materials, *GLUCOSE
Abstract

Dual-functional nanomaterial electrodes have the capability to satisfy the requirements for both sweat analysis and the hydrogen evolution reaction (HER), thereby enabling the integration of electrochemical sensing and hydrogen production. In this study, ZIF-67 cubes are synthesized on nickel foam (NF), while TiO2 is obtained through an annealing process. Subsequently, the ZIF-67@TiO2/MoS2 nanocomposite is fabricated on nickel foam via a hydrothermal method. This composite material exhibits exceptional photocatalytic properties and is also suitable for the detection of glucose in sweat. The glucose detection range spans from 10 nM to 10 mM with a sensitivity of 7.24 μA mM−1 cm−2 for a signal-to-noise ratio of 3 and a detection limit of 0.43 μM. Moreover, when utilized as a hydrogen evolution electrode, this material demonstrates a current density of 10 mA cm-2 at an overpotential of 118 mV, with a Tafel slope of 73 mV/dec. The synthesis process is both straightforward and economical. This research introduces a novel concept for the design of multifunctional chemical sensors. [ABSTRACT FROM AUTHOR]

Published
2024
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45. A Photoelectrochemical Biosensor Based on a Composite Structure of Au Nanoparticles Loaded on NiO/TiO2 Heterojunction for Sensitive Analysis of Cold-Resistant RNA in Winter Wheat

Author

Tao, Bairui, Gao, Baozhu, Miao, Fengjuan, Chen, Yushu, and Liu, Lijie

Abstract

Materials with heterostructures that are sensitive to light have a wide range of applications in photoelectrochemical (PEC) detection and can improve their photoelectric performance. Here, we have designed a reliable and low-cost PEC biosensor applied for the detection and analysis of cold-resistant RNA in winter wheat. First, TiO2 nanospheres, a photoactive material, as well as NiO nanoflowers were prepared, and TiO2 was coupled with prepared NiO to form a compact heterojunction structure of NiO/TiO2, on which Au nanoparticles were loaded and used to modify the surface of the ITO conductive glass, resulting in the preparation of Au/NiO/TiO2/ITO electrodes. Then, single-stranded RNA (ssRNA) was immobilized as a probe on top of the electrode. The two would bind specifically when the target ssRNA concentration was added, and then, the sensing performance was analyzed using a series of characterization and PEC tests. The results demonstrated that the photocurrent signal response was correlated with the target RNA (tRNA) concentration, and the sensor showed a low limit of detection (LOD =0.015 pM) and a correlation coefficient of 0.99576 over a wide linear range of concentrations from 1 pM to 100 nM. The prepared biosensors showed good reproducibility, stability, and excellent specificity. The proposed Au/NiO/TiO2 composite can effectively measure the cold-resistant RNA levels in winter wheat, which provides a value for grain yield and cold-resistant breeding.

Published
2024
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47. Design of Rice Traceability System Based on WSN and RFID

Author

Miao, Fengjuan, Lu, Xiaoxu, Tao, Bairui, Liu, Kaida, Liu, Ding, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Xhafa, Fatos, editor, Patnaik, Srikanta, editor, and Tavana, Madjid, editor

Published
2019
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