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Spherical cadmium sulfide crystal and preparation method thereof

A cadmium sulfide, spherical technology, applied in the direction of cadmium sulfide, can solve the problems of high cost, low crystallization degree of cadmium sulfide crystal, and low photocatalytic performance, and achieve low cost, easy control, and excellent photocatalytic performance.

Active Publication Date: 2016-06-15
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the crystallization degree of cadmium sulfide obtained by this method is not high, and the photocatalytic performance is not high; moreover, it requires special equipment for preparation, and the cost is high

Method used

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  • Spherical cadmium sulfide crystal and preparation method thereof
  • Spherical cadmium sulfide crystal and preparation method thereof
  • Spherical cadmium sulfide crystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take cadmium chloride, thiourea and surfactant hydroxypropyl cellulose, prepare mixed solution with cadmium chloride and thiourea with distilled water, the concentration of thiourea is 0.8mol / L, and the concentration of chromium chloride is 0.2mol / L; add the mixed solution to the autoclave, add 0.2g hydroxypropyl cellulose, and the filling degree of the autoclave is 70% (the volume of the autoclave is 100mL, that is, the reaction liquid is 70mL); put the autoclave into Put it into an oven and react at a constant temperature of 180°C for 10 hours; take out the reaction kettle, cool it naturally, wash, centrifuge and dry the reacted solution to obtain spherical cadmium sulfide crystals.

Embodiment 2

[0025] Take cadmium chloride, thiourea and surfactant hydroxypropyl cellulose, prepare mixed solution with cadmium chloride and thiourea with distilled water, the concentration of thiourea is 1mol / L, and the concentration of chromium chloride is 0.2mol / L L; This mixed solution is joined in the autoclave, adds 0.5g hydroxypropyl cellulose, and the filling degree of the reactor is 70%;

[0026] Put the reactor into an oven and react at a constant temperature of 140°C for 16 hours; take out the reactor, cool it naturally, wash, centrifuge and dry the reacted solution to obtain spherical cadmium sulfide crystals.

Embodiment 3

[0028] Weigh cadmium chloride, thiourea and surfactant hydroxypropyl cellulose, prepare mixed solution with cadmium chloride and thiourea with distilled water, the concentration of thiourea is 0.3mol / L, and the concentration of chromium chloride is 0.3mol / L; add the mixed solution to the autoclave, add 0.1g hydroxypropyl cellulose, and the filling degree of the autoclave is 70%;

[0029] Put the reactor into an oven and react at a constant temperature of 200°C for 8 hours; take out the reactor, cool it naturally, wash, centrifuge and dry the reacted solution to obtain spherical cadmium sulfide crystals.

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Abstract

The invention provides a spherical cadmium sulfide crystal and a preparation method thereof. The preparation method comprises the steps: mixing evenly an aqueous solution containing a cadmium source and a sulfur source, adding the mixed solution into a high-pressure reaction kettle, adding a surfactant into the high-pressure reaction kettle, carrying out a hydrothermal reaction for 8-16 h at the temperature of 140-200 DEG C, and thus obtaining the spherical cadmium sulfide crystal. The method is simple to operate and relatively low in cost, has the reaction carried out in the closed high-pressure reaction kettle, and is easier to control. The prepared cadmium sulfide crystal is a pure hexagonal wurtzite and has higher crystallization degree; and at the same time, compared with cadmium sulfide crystals with other morphologies, the spherical cadmium sulfide crystal has larger specific surface area and higher photocatalytic performance.

Description

technical field [0001] The invention belongs to the field of preparation of photocatalytic materials, in particular to a spherical cadmium sulfide crystal and a preparation method thereof. Background technique [0002] With the rapid development of human society and the increasingly serious problem of environmental pollution, semiconductor photocatalytic technology has attracted more and more attention. Semiconductor photocatalysis technology uses solar energy to deeply degrade various volatile organic substances in air and water under normal temperature and pressure, and rarely produces secondary pollution in the process. Among them, cadmium sulfide is an important wide-bandgap semiconductor with a band gap of 2.42 eV and exhibits many novel nonlinear optical properties, so it has broad application prospects in photocatalysis, luminescent materials, biological detection, solar cells and other fields. [0003] At present, the methods for synthesizing CdS mainly include solv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G11/02
CPCC01G11/02C01P2002/72C01P2004/03C01P2004/32
Inventor 郑玉婴刘阳龙
Owner FUZHOU UNIV
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