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based on fe 2 o 3 Electrode-free glucose photoelectrochemical sensor and preparation method and detection method thereof

A photoelectrochemical and detection method technology, applied in the direction of material electrochemical variables, scientific instruments, instruments, etc., can solve the problems of narrow detection range of glucose concentration, narrow light absorption range, discontinuous linear response range, etc., to improve detection sensitivity, optical The effect of wide response range and low detection limit

Active Publication Date: 2022-08-09
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above two photoelectrochemical sensors have technical problems such as narrow detection range of glucose concentration, discontinuous linear response range, and narrow light absorption range.

Method used

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  • based on fe <sub>2</sub> o <sub>3</sub> Electrode-free glucose photoelectrochemical sensor and preparation method and detection method thereof
  • based on fe <sub>2</sub> o <sub>3</sub> Electrode-free glucose photoelectrochemical sensor and preparation method and detection method thereof
  • based on fe <sub>2</sub> o <sub>3</sub> Electrode-free glucose photoelectrochemical sensor and preparation method and detection method thereof

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Embodiment 1

[0032] This embodiment discloses a Fe 2 O 3The preparation method of nanorod array electrode comprises the following steps:

[0033] (1) Cut the FTO conductive glass into dimensions of width × length = 2 cm × 2.5 cm, first boil it in a sodium hydroxide solution with a mass concentration of 5%, and then use acetone, ethanol and ultrapure water in turn to conduct the FTO conductive glass. ultrasonic cleaning;

[0034] (2) Take 0.2mol L -1 FeCl 3 solution and 0.3mol L -1 NH 2 CONH 2 The solution was put into a beaker, the washed FTO conductive glass was placed in the beaker, the mouth of the beaker was sealed with plastic wrap, and then the beaker was placed in an oven at 100 °C for 4 hours, then gently taken out and rinsed with deionized water. After rinsing, it was put into a crucible, dried at room temperature, calcined at 500°C for 3h, and then annealed at 750°C for 10min. to produce Fe 2 O 3 nanorod array electrodes, the Fe 2 O 3 Nanorod array electrodes are test...

Embodiment 2

[0037] This embodiment discloses a Fe-based 2 O 3 Electrode detection method of enzyme-free glucose photoelectrochemical sensor, which comprises taking Fe 2 O 3 The nanorod array electrode was used as the working electrode, the platinum wire was used as the counter electrode, and the saturated calomel was used as the reference electrode to establish a three-electrode system. The three-electrode system is connected to the electrochemical workstation; the current-time measurement technology is used, and the photoelectric signal detection of glucose oxidation is carried out under the irradiation of simulated sunlight under the bias potential of -0.1V vs. SCE. According to the calibration curve between the concentration of glucose substrate and the detected photocurrent, the content of glucose in the solution to be tested is determined.

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Abstract

The present invention disclose a Fe based on Fe 2 O 3 Electrochemical -free glucose optoelectronic chemical sensors and their preparation methods and detection methods are the field of sensor technology.It includes get Fe 2 O 3 The electrode is working electrode, platinum wire or platinum sheet is the electrode, saturated and mercury electrode as a reference electrode, where 2 O 3 The electrode includes conductive base and FE on the surface of the conductive base surface 2 O 3 Film, Fe 2 O 3 The film includes the FE vertically discharged vertically on the conductive base in the formation of array 2 O 3 Nano stick, and Fe 2 O 3 The height of the nanoscope is 290 ~ 310nm, Fe 2 O 3 The diameter of the nanoscope is 72nm.The enzyme -free glucose optoelectronic chemical sensor designed by the present invention is high and stable.

Description

technical field [0001] The invention relates to an enzyme-free glucose photoelectrochemical sensor, belonging to the technical field of photoelectrochemical sensors, in particular to a Fe-based photoelectrochemical sensor 2 O 3 Electrode-free glucose photoelectrochemical sensor and preparation method and detection method thereof. Background technique [0002] Quantitative analysis of glucose plays an extremely important role in clinical medicine, biochemistry, environmental monitoring, food science and other fields. The development of glucose sensors has always been the focus of the development of the sensor field. At present, glucose determination methods mainly include infrared spectroscopy, capillary electrophoresis, fluorescence spectroscopy, photoacoustic spectroscopy, colorimetry, surface plasmon resonance biosensors and electrochemiluminescence. However, these methods usually require more expensive equipment and more complicated sample processing, which is not condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30G01N27/327G01N27/416
CPCG01N27/3278G01N27/301G01N27/416
Inventor 张丙青何利华章瑞刁良强
Owner HUBEI ENG UNIV
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