Photoelectrochemical biofuel cell based on quantum dot, titanium dioxide and enzyme, and preparation method thereof

A titanium dioxide, chemical and biological technology, applied in the field of enzyme-based biofuel cells, can solve problems such as reducing the total surface area, and achieve the effects of maximizing surface area, maximizing efficiency and good dispersibility

Inactive Publication Date: 2011-11-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem of platinum t nanopowder is that the total surface area is reduced due to the contact between particles and particles.

Method used

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  • Photoelectrochemical biofuel cell based on quantum dot, titanium dioxide and enzyme, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Step (1): Dissolve 20g of ethylenediamine in 100mL of methanol, stir, blow nitrogen for 15min, add 1.36mol of methyl acrylate dropwise with a constant flow pump at -30°C, react at low temperature for 48h, then raise the temperature to room temperature (20 ° C) Let it ripen for 48h. After the reaction is complete, below 45 ° C. The solvent methanol and excess methyl acrylate were distilled off under reduced pressure at 0.1 MPa to obtain 0.5G PAMAM.

[0048] Dissolve the above 25mmol of 0.5G PAMAM in 100mL of methanol, dropwise add 200mmol of ethylenediamine methanol solution with a constant flow pump, react at low temperature for 48h, and then react at room temperature for 48h. After the same reaction is complete, when it is lower than 45 ° C, distilled under reduced pressure at 0.1MPa, and added n-butanol and ethylenediamine to form an azeotropic mixture, then removed to obtain 1G PAMAM.

[0049] By repeating the above synthesis process, half-generation or whole-gen...

Embodiment 2

[0060] with "Join with Cd 2+ Equivalent amount of Se powder" to replace "adding with Cd" in step (4) 2+ Equivalent amount of Na 2 S"; and omit step (5); replace "TiO2 in step (5)" in step (6) with "P25 titanium dioxide nanoparticles" 2 fiber" repeating the steps in Example 1, and finally the anode modification is carbon paper loaded with quantum dot CdSe / P25 titanium dioxide / enzyme complex, using glucose as fuel, the measured short-circuit current of the battery reaches 450 μA / cm 2 , the open circuit voltage is 0.5 V.

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Abstract

The invention provides a photoelectrochemical biofuel cell based on quantum dot, titanium dioxide and enzyme, and a preparation method thereof. The photoelectrochemical biofuel cell comprises the following parts: an anode chamber containing an anode, a cathode chamber containing a cathode, a membrane material to separate the anode chamber and the cathode chamber, and an outer circuit. The anode and the cathode are formed by loading modifiers on basic materials; and the enzyme is immobilized on a quantum dot / titanium dioxide composite layer, and the quantum dot and titanium dioxide are connected through a coupling agent. The invention has following characteristics of high output performance, high utilization efficiency of incident light, cheap and easily available raw materials. In addition, nano platinum is employed as a catalyst to realize a maximum surface area and a maximum catalysis efficiency.

Description

technical field [0001] The invention relates to an enzyme-based biofuel cell, in particular to a photoelectrochemical biofuel cell comprising quantum dots, titanium dioxide and enzymes, and a preparation method thereof. Background technique [0002] With the increasing shortage of energy, it has become the consensus of the whole world to develop new clean energy and adjust the energy structure. Enzyme-based biofuel cells use enzymes as catalysts to combine renewable energy sources such as sugars and organic acids, that is, fuel oxidation and oxygen reduction, to generate electricity under stable conditions (normal temperature, pH neutral), and are considered to be 21 Century's preferred clean and efficient power generation method. However, enzyme-based biofuel cells are still far away from practical applications, mainly because their output power density is far from meeting the requirements. [0003] Chinese patent CN 101494296A (2009) discloses a biofuel cell and its manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/00H01M8/16H01M4/92H01G9/042H01G9/20
CPCY02E60/128Y02E60/527Y02E60/50Y02P70/50
Inventor 朱以华张建梅杨晓玲陆金丹沈建华
Owner EAST CHINA UNIV OF SCI & TECH
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