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Bacterial cellulose carbon paste electrode and preparation method thereof

A bacterial cellulose and carbon paste electrode technology, applied in the field of electrodes, can solve the problems that have not yet been seen, and achieve the effects of easy popularization, improved sensitivity, and good catalytic effect.

Inactive Publication Date: 2009-12-02
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Bacterial cellulose itself has a unique ultrafine network fiber structure, strong water absorption, high crystallinity, high degree of polymerization, good biocompatibility, good biodegradability and controllable performance during biosynthesis, and its application prospects It is widely used in vibrating membranes of loudspeakers, wound care dressings, artificial skin, electronics industry, permeable membranes, and papermaking, but there are no reports on modifying carbon paste electrodes and studying their electrochemical properties.

Method used

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  • Bacterial cellulose carbon paste electrode and preparation method thereof
  • Bacterial cellulose carbon paste electrode and preparation method thereof
  • Bacterial cellulose carbon paste electrode and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] A bacterial cellulose carbon paste electrode mainly consists of an outer sleeve (which is a polytetrafluoroethylene sleeve with an inner diameter of 3mm), a screw rod (generally a copper screw rod) connected to the inner thread of the outer sleeve at one end, and filled in the outer sleeve. The carbon paste composition (structure is the same as prior art); The carbon paste is fully mixed with 40mg carbonized bacterial cellulose and 70ul silicone oil;

[0033] The preparation method of the bacterial cellulose carbon paste electrode is as follows: 40 mg of carbonized bacterial cellulose is fully mixed with 70 ul of silicone oil, and then the mixture is packed into an outer sleeve and compacted to obtain the bacterial cellulose carbon paste electrode product.

[0034] The bacterial cellulose carbon paste electrode of this embodiment is placed in the mixed solution of 1 mmol / L potassium ferricyanide and 0.1 mol / L potassium chloride, within the potential range of 0.8~-0.2V, p...

Embodiment 2

[0037] A bacterial cellulose carbon paste electrode mainly consists of: an outer sleeve (a polytetrafluoroethylene sleeve with an inner diameter of 3mm), a screw rod (generally a copper screw rod) connected to the inner thread of the outer sleeve at one end, and a screw rod filled in the outer sleeve The composition of the carbon paste in the tube (the structure of the carbon paste electrode is the same as that of the prior art); the carbon paste is a mixture obtained by uniformly mixing carbonized bacterial cellulose and a hydrophobic organic solvent.

[0038]The preparation method of the bacterial cellulose carbon paste electrode is to take 40mg of bacterial cellulose that has been carbonized at 900°C for 3 hours under a nitrogen atmosphere and fully mix it with 70ul of silicone oil, then put the mixture into the outer casing and compact it to obtain the bacterial cellulose Plain carbon paste electrode products.

[0039] Using potassium ferricyanide solution as a probe, the ...

Embodiment 3

[0041] A bacterial cellulose carbon paste electrode, which mainly consists of: an outer casing (which is a polytetrafluoroethylene casing), a screw rod (generally a copper screw rod) connected to the inner thread of the outer casing at one end, and carbon paste filled in the outer casing Composition (the structure of the carbon paste electrode is the same as that of the prior art); the carbon paste is a mixture obtained by uniformly mixing carbonized bacterial cellulose and a hydrophobic organic solvent.

[0042] The preparation method of the bacterial cellulose carbon paste electrode is to take 80mg of bacterial cellulose that has been carbonized at 1000°C for 2 hours under a nitrogen atmosphere and fully mix it with 150ul silicone oil, then put the mixture into the outer casing and compact it to obtain the bacterial cellulose Plain carbon paste electrode products.

[0043] Others are the same as embodiment 1 or embodiment 2, and have characteristics and beneficial effects de...

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Abstract

The invention discloses a bacterial cellulose carbon paste electrode, which comprises an outer sleeve, a screw rod of which one end is in internal thread connection with the outer sleeve, and carbon paste filled in the outer sleeve, and is characterized in that: the carbon paste is a mixture prepared by evenly mixing carbonized bacterial cellulose and hydrophobic organic solvent in a ratio that 20 to 80mg of carbonized bacterial cellulose is added with 50 to 150ul of hydrophobic organic solvent; and the carbonized bacterial cellulose and the hydrophobic organic solvent are evenly mixed, filled in the outer sleeve, and compacted to prepare the bacterial cellulose carbon paste electrode. The bacterial cellulose carbon paste electrode has higher electrochemical activity on oxido-reduction potential of potassium ferricyanide; and the bacterial cellulose carbon paste electrode is self-assembled and modified with phosphomolybdic acid, can adsorb more anions of phosphomolybdic acid radicals, can improve the catalytic sensitivity and selectivity of the self-assembled and modified electrode on nitrite ions, and has good catalysis performance on the nitrite ions.

Description

technical field [0001] The invention belongs to electrodes, and relates to a bacterial cellulose carbon paste electrode and a preparation method thereof. It is suitable for the preparation of carbon paste electrodes with superior electrochemical performance than traditional carbon paste electrodes. The prepared bacterial cellulose carbon paste electrodes can be used for electrochemical catalysis of nitrite and other substances after being modified with phosphomolybdic acid. application. Background technique [0002] Due to its excellent properties, carbon paste electrodes have attracted much attention and have been widely used in many aspects such as life, environment, energy, analysis, electronics, and materials science. The traditional carbon paste electrode is generally composed of an outer casing, a screw rod connected to the inner thread of the outer casing at one end, and carbon paste filled in the outer casing. The carbon paste uses graphite as the carbon material, a...

Claims

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Application Information

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IPC IPC(8): C25B11/12G01N27/30
Inventor 何平梁艳马拥军裴重华周勇李小兵
Owner SOUTHWEAT UNIV OF SCI & TECH
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