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Preparation method and application of graphite type carbon nitride nano-rod modified electrode

A technology of graphite-type carbon nitride and modified electrodes, applied in the direction of material electrochemical variables, etc., to achieve high detection sensitivity, control of heavy metal pollution, and wide practical application space

Active Publication Date: 2014-04-09
泰州市海创新能源研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, with NH 4 Cl hydrothermal treatment of carbon nitride to form carbon nitride nanorods, and its application to the photoelectric detection of copper ions has not been reported in the literature

Method used

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  • Preparation method and application of graphite type carbon nitride nano-rod modified electrode
  • Preparation method and application of graphite type carbon nitride nano-rod modified electrode
  • Preparation method and application of graphite type carbon nitride nano-rod modified electrode

Examples

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Effect test

Embodiment 1

[0031] (1) Put 2 g of dicyandiamide into a semi-closed alumina crucible, raise the temperature to 350 oC at a rate of 2.9 oC per minute under nitrogen atmosphere, keep at this temperature for 2 h, and then The heating rate was 3.3 oC, the temperature was raised to 540 oC, kept at this temperature for 2 h, and then dropped to room temperature naturally. The obtained product was washed four times with deionized water and absolute ethanol, and dried at 50 oC for 12 h to obtain graphite carbon nitride as a yellow solid powder.

[0032] (2) Add 140 mg NH 4 Dissolve Cl into 20 mL deionized water to form NH 4 Cl solution. Immediately followed by 40 mg g-C 3 N 4 Dispersed to the above NH 4 Cl solution, stirred for 30 min, and then sonicated for 30 min to form g-C 3 N 4 Dispersions. The above suspension was transferred to a polytetrafluoroethylene-lined reactor, reacted at 160 °C for 12 h, and then cooled to room temperature naturally. The final product was washed 4 times wit...

Embodiment 2

[0039] (1) Put 2 g of dicyandiamide into a semi-closed alumina crucible, raise the temperature to 350 oC at a rate of 2.9 oC per minute under nitrogen atmosphere, keep at this temperature for 2 h, and then The heating rate was 3.3 oC, the temperature was raised to 540 oC, kept at this temperature for 2 h, and then dropped to room temperature naturally. The obtained product was washed four times with deionized water and absolute ethanol, and dried at 50 oC for 12 h to obtain graphite carbon nitride as a yellow solid powder.

[0040] (2) Add 150 mg NH 4 Dissolve Cl into 20 mL deionized water to form NH 4 Cl solution. Immediately followed by 50 mg g-C 3 N 4 Dispersed to the above NH 4 Cl solution, stirred for 30 min, and then sonicated for 30 min to form g-C 3 N 4 Dispersions. The above suspension was transferred to a polytetrafluoroethylene-lined reactor, reacted at 160 °C for 12 h, and then cooled to room temperature naturally. The final product was washed 4 times wit...

Embodiment 3

[0053] (1) Put 2 g of dicyandiamide into a semi-closed alumina crucible, raise the temperature to 350 oC at a rate of 2.9 oC per minute under nitrogen atmosphere, keep at this temperature for 2 h, and then The heating rate was 3.3 oC, the temperature was raised to 540 oC, kept at this temperature for 2 h, and then dropped to room temperature naturally. The obtained product was washed four times with deionized water and absolute ethanol, and dried at 50 oC for 12 h to obtain graphite carbon nitride as a yellow solid powder.

[0054] (2) Add 160 mg NH 4 Dissolve Cl into 20 mL deionized water to form NH 4 Cl solution. Immediately followed by 60 mg g-C 3 N 4 Dispersed to the above NH 4 Cl solution, stirred for 30 min, and then sonicated for 30 min to form g-C 3 N 4 Dispersions. The above suspension was transferred to a polytetrafluoroethylene-lined reactor, reacted at 160 °C for 12 h, and then cooled to room temperature naturally. The final product was washed 4 times wit...

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Abstract

The invention relates to a preparation method for a graphite type carbon nitride nano-rod modified electrode and application of the graphite type carbon nitride nano-rod modified electrode in the photoelectric chemical detection of copper ions, belonging to the technical field of detection of metal ions. A photoelectric chemical detector is a three-electrode system, wherein a reference electrode in three electrodes is a saturated calomel electrode, an auxiliary electrode is a platinum electrode, and a working electrode is graphite type carbon nitride nano-rod material modified ITO (indium tin oxide) conductive glass. The photoelectric chemical detector has high sensitivity, selectivity and anti-interference capability, and can be used for rapidly detecting metal ions, and the application fields of graphite type carbon nitride are widened.

Description

technical field [0001] The invention relates to a method for qualitatively and quantitatively detecting metal ions by photoelectrochemistry, and belongs to the technical field of detecting metal ions. Background technique [0002] The photoelectrochemical process refers to the electron absorption photons of semiconductor materials, molecules, particles, etc., which are excited to generate charge transfer, and further realize the conversion process of light energy into electrical energy. When the energy of the irradiating light is equal to or greater than the energy of the semiconductor band gap (Eg), electrons (e - ) is excited to transition from the valence band to the conduction band, and holes are generated on the valence band (h + ), electrons and holes are effectively separated, and photoelectric conversion is realized. The photoelectrochemically active material undergoes a photoelectrochemical reaction after being excited by light, thereby forming a photovoltage or ph...

Claims

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Application Information

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IPC IPC(8): G01N27/30C03C17/28
Inventor 徐丽夏杰祥许晖钱静孙开涌王雷刚李华明
Owner 泰州市海创新能源研究院有限公司
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