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Cadmium sulfide nanorod and method for friction catalytic degradation of organic pollutants

A technology of cadmium sulfide nanorods and organic pollutants, applied in the direction of cadmium sulfide, water pollutants, chemical instruments and methods, etc., can solve the problems of surrounding environmental hazards, reduce degradation costs, be suitable for popularization and application, and avoid equipment requirements Effect

Inactive Publication Date: 2020-10-30
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in addition to ultrasonic waves, the input source in this method also uses noise waves not lower than 3000 Hz. Long-term continuous ultrasonic waves and high-frequency noise energy will undoubtedly cause harm to humans, wild animals and their surrounding environments.

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  • Cadmium sulfide nanorod and method for friction catalytic degradation of organic pollutants
  • Cadmium sulfide nanorod and method for friction catalytic degradation of organic pollutants
  • Cadmium sulfide nanorod and method for friction catalytic degradation of organic pollutants

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preparation example Construction

[0028] The preparation method of the cadmium sulfide nanorod includes the following steps:

[0029] In the first step, disperse chromium nitrate tetrahydrate and thiourea in a 0.86mol / L ethylenediamine solution, stir evenly and transfer to the reactor, and keep the reaction at 135~178℃ for 15-75h, and the resulting product is washed , The hybrid precursor is obtained after drying;

[0030] In the second step, the hybrid precursor is dispersed in deionized water, ultrasonically dispersed, and then stirred and refluxed at 80°C for 12 hours to remove all the organic matter in the hybrid precursor. The resulting product is washed with deionized water and absolute ethanol successively After drying, cadmium sulfide nanorods can be obtained.

[0031] More preferably, in the first step, chromium nitrate tetrahydrate and thiourea are dispersed in the ethylenediamine solution at a molar ratio of 1:3, and stirred at room temperature for 30 minutes to make them evenly mixed; the reaction kettle...

Embodiment 1

[0036] (1) Synthesis of CdS nanorod precursor

[0037] Weigh 6.46mmol of chromium nitrate tetrahydrate and 19.38mmol of thiourea and disperse them in a 0.86mol / L ethylenediamine solution, stir for 30min at room temperature to make it evenly mixed; then transfer to the reactor, cover and seal, and put The stainless steel sleeve is tightly locked, the temperature is raised to 160 DEG C, and the temperature is kept for 60 hours. The obtained yellow powder is washed with deionized water and absolute ethanol and dried to obtain a hybrid precursor.

[0038] (2) Synthesis of CdS nanorods

[0039] Take 40 mg of the obtained hybrid precursor and disperse it in 150 ml of deionized water for ultrasonic dispersion, then stir and reflux at 80°C for 12 hours to remove all the organic matter in the hybrid precursor. The resulting product is washed with deionized water and absolute ethanol for 3 times. , Transferred to a 60°C vacuum drying oven and dried for 12 hours, and the obtained cadmium sulfi...

Embodiment 2

[0058] (1) Synthesis of CdS nanorod precursor

[0059] Weigh 5.81mmol of chromium nitrate tetrahydrate and 17.43mmol of thiourea and disperse them in a 0.86mol / L ethylenediamine solution, stir for 30min at room temperature to make them evenly mixed; then transfer to the reactor, cover and seal, and put The stainless steel sleeve is tightly locked, the temperature is raised to 135° C., and the temperature is kept for 15 hours. The obtained yellow powder is washed with deionized water and absolute ethanol and dried to obtain a hybrid precursor.

[0060] (2) Synthesis of CdS nanorods

[0061] Take 40 mg of the obtained hybrid precursor and disperse it in 150 ml of deionized water for ultrasonic dispersion, then stir and reflux for 12 hours at 80°C to remove all the organic matter in the hybrid precursor. The resulting product is washed with deionized water and absolute ethanol for 4 times. , Transferred to a vacuum drying oven at 60° C. and dried for 10 hours, and the obtained cadmium ...

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Abstract

The invention particularly relates to a cadmium sulfide nanorod and a method for friction catalytic degradation of organic pollutants. The cadmium sulfide nanorod is of a hexagonal wurtzite crystal structure, belongs to a non-centrosymmetric point group, and has a specific diameter of 40-50 nm and a length-diameter ratio of 8: 1 to 100: 1. According to the cadmium sulfide nanorod and the method for friction catalytic degradation of organic pollutants in the invention, operation is simple; the piezoelectric property of cadmium sulfide with a specific structure is utilized, so mechanical energyin an environment can be enriched more effectively; organic matter degradation can be achieved only through magnetic stirring under a dark condition, so the problem that a conventional photocatalysisexperiment is low in visible light response efficiency is solved; and meanwhile, the demand for equipment capable of generating sound waves in piezoelectric catalysis is avoided, sewage degradation efficiency is greatly improved, sewage treatment cost is reduced, and the method is suitable for application and popularization.

Description

Technical field [0001] The invention relates to the technical field of sewage catalytic degradation, in particular to a method for cadmium sulfide nanorods and friction catalytic degradation of organic pollutants. Background technique [0002] With the development of modern industry, environmental pollution seriously restricts the sustainable development of society. In particular, the soluble organic pollutants produced in the printing and dyeing industry are highly toxic and difficult to decompose. They not only cause water pollution, but also spread bacteria and viruses, which seriously endanger people's health. Therefore, the development of technologies to remove these harmful dyes from wastewater has become a top priority for scholars. [0003] Dye wastewater can be treated by some traditional methods, such as physical adsorption, coagulation sedimentation, and electrocoagulation. However, in these methods, the dye contaminants are not completely degraded, but are transferred...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G11/02B82Y30/00B82Y40/00B01J27/04C02F1/00C02F1/58C02F101/30
CPCC01G11/02B82Y30/00B82Y40/00C02F1/00C02F1/58B01J27/04C02F2101/30C02F2101/308C01P2004/03C01P2004/04C01P2004/64C01P2004/16B01J35/40
Inventor 杨耀东杨变饶伟锋
Owner QILU UNIV OF TECH
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