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Bovine-serum-albumin-reinforced ascorbic acid/glucose fuel cell and application thereof

A technology of bovine serum albumin and ascorbic acid, which is applied in the field of photocatalytic fuel cells, can solve the problems of decreased electrode activity, difficult electron and material transport, etc., and achieves the effects of simple production, good biocompatibility and high photocatalytic activity

Inactive Publication Date: 2016-12-14
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, serum albumin is a non-redox protein, which is usually easily adsorbed on the surface of the electrode, resulting in a decrease in electrode activity, so it is difficult to transport electrons and substances, so there is no use of serum albumin as a light-induced redox mediator. report

Method used

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  • Bovine-serum-albumin-reinforced ascorbic acid/glucose fuel cell and application thereof
  • Bovine-serum-albumin-reinforced ascorbic acid/glucose fuel cell and application thereof
  • Bovine-serum-albumin-reinforced ascorbic acid/glucose fuel cell and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Construction of Ultraviolet Light Excited Bovine Serum Albumin Enhanced Ascorbic Acid / Glucose Fuel Cell

[0029] The bovine serum albumin sensitization CdS / TiO of the present embodiment 2 The electrode is prepared by the following method:

[0030] (1) Immerse the indium tin oxide conductive glass (ITO) into the prepared ethanol-dispersed TiO 2 (After calcination treatment at 450°C) the solution was pulled three times to make the solution adhere to the substrate. After taking it out, put the electrode in an oven at 40°C and dry it for 12 hours to obtain TiO 2 Electrodes were stored in a dark box.

[0031] (2) Using cyclic voltammetry electrodeposition method, the working electrode is TiO 2 electrode, the counter electrode is a titanium plate electrode, and the reference electrode is a saturated calomel electrode to form a three-electrode system. The electrolyte is a pH 2.0 solution containing 0.01mol / L cadmium chloride and 0.01mol / L sodium thiosulfate. The ...

Embodiment 2

[0035] Embodiment 2 ascorbic acid and ascorbic acid promote the electrocatalytic oxidation of glucose

[0036] The bovine serum albumin sensitization CdS / TiO that prepares in embodiment 1 2 The electrode performs linear voltammetry scanning in ascorbic acid and ascorbic acid / glucose, and the specific operation steps are as follows:

[0037] Bovine serum albumin sensitized CdS / TiO made with embodiment 1 2 The electrode was used as the working electrode, the titanium electrode was used as the counter electrode, and the saturated calomel electrode was used as the reference electrode. A three-electrode system was constructed and connected to an electrochemical workstation, and the linear voltammetry scanning method was used to measure the concentration in buffer solution (1) and glucose (2) respectively. , current in ascorbic acid (3) and glucose / ascorbic acid (4) versus potential ( figure 1 ), to elucidate bovine serum albumin-sensitized CdS / TiO 2 Electrode ascorbic acid and a...

Embodiment 3

[0039] Example 3 Ultraviolet Light Enhanced Photocatalytic Oxidation of Ascorbic Acid / Glucose

[0040] The photoelectrochemical fuel cell built in Example 1 is tested, and the specific steps are as follows:

[0041] Connect the anode and cathode of the photoelectrochemical fuel cell with a resistance box, the resistance of the fixed resistance box is 10,000 ohms, and the switch lights are controlled at equal time intervals, and the current density of the photoelectrochemical fuel cell is measured and calculated ( figure 2 ) curves over time.

[0042] What is shown in curve 1 is that in the buffer solution, no current signal appears in the dark, but under ultraviolet light irradiation, an obvious photocurrent appears, with a value of 6.72 μA cm -2 ; Then after adding glucose, curve 2 shows that there is no current signal in the dark, but the photocurrent under ultraviolet light radiation is 6.73μA·cm -2 , almost unchanged compared to curve 1, indicating that glucose alone is...

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Abstract

The invention belongs to the field of photocatalytic fuel cells, and discloses a bovine-serum-albumin-reinforced ascorbic acid / glucose fuel cell and application thereof. By using a bovine-serum-albumin-sensitized CdS / TiO2 electrode as a photoanode, the bovine serum albumin enhances the photocatalytic oxidation of the ascorbic acid / glucose on the CdS / TiO2 electrode under the excitation of ultraviolet light; and on such basis, the photocatalytic fuel cell is developed, wherein the open-circuit voltage is 0.64V, the maximum power is 6.33 mu W. Cm<-2>, the short-circuit current is 0.126 mA / cm<-2>, and the photoelectric conversion efficiency is 10.7%. By using the serum albumin as the photoinduction redox medium and using the ascorbic acid and glucose in the blood as fuels, the fuel cell has the advantages of low cost, environment friendliness, high photoelectric conversion efficiency, favorable biocompatibility and the like.

Description

technical field [0001] The invention belongs to the field of photocatalytic fuel cells, in particular to a bovine serum albumin-enhanced ascorbic acid / glucose fuel cell and its application. Background technique [0002] Glucose, ascorbic acid and serum albumin in blood play very important physiological functions in life activities. Glucose serves as an energy supply for the human body, ascorbic acid participates in the metabolism of substances in the body as an essential vitamin, and serum albumin serves as a carrier protein for the transport and operation of endogenous and exogenous substances. These substances interact under physiological conditions and maintain with normal life activities. In addition, bovine serum albumin (BSA) is often used as a representative of serum albumin due to its highly similar structure to human serum albumin (HSA), abundant sources, easy purification, and low cost. To this end, we hope to use serum albumin as a light-induced redox mediator, ...

Claims

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Application Information

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IPC IPC(8): H01M14/00G01N27/48B82Y30/00
CPCB82Y30/00G01N27/48H01M14/005
Inventor 王奕梁兴煇李红
Owner SOUTH CHINA NORMAL UNIVERSITY
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