Method for preparing cadmium sulfide or zinc sulfide hollow nano diamonds by using non-template method

Abstract

The invention relates to a method for preparing cadmium sulfide or zinc sulfide hollow nano diamonds by using a non-template method. The method comprises the following steps of: adding inorganic cadmium source or inorganic zinc power and sulfur powder in a molar ratio of 1:1 into tetrahydrofuran solution, and performing ultrasonic dispersion; weighing sodium borohydride in the same molar content as the sulfur powder, adding the sodium borohydride into the tetrahydrofuran solution, and performing ultrasonic dispersion; dripping the obtained solution into the solution formed by adding the inorganic cadmium source and the sulfur powder into the tetrahydrofuran solution, and performing ultrasonic reaction; performing centrifugal separation on the obtained reaction products by using absolute ethanol; and performing vacuum drying to obtain a final yellow product, namely the cadmium sulfide hollow nano diamonds. The preparation reaction conditions are mild; the method is simple and feasible,has strong operability, good repeatability and low cost, and has certain universality; the cadmium sulfide or zinc sulfide hollow nano diamonds prepared by the method have high specific surface area and regular hollow square shape, and can be applied to medicament transportation more effectively; and meanwhile, cadmium sulfide or zinc sulfide is a good photocatalyst, the hollow nano structure is favorable for improving the photocatalysis performance, and the cadmium sulfide or the zinc sulfide has broad application prospect on the aspects of photocatalytic decomposition of toxic or harmful substances and photocatalytic water decomposition for preparing hydrogen.

Description

technical field

[0001] The invention relates to a method for preparing hollow nano-cubes of cadmium sulfide and zinc sulfide by a non-template method, belonging to the field of nanotechnology. Background technique

[0002] The preparation of nanomaterials with special structures, especially nanomaterials with hollow structures, is of great significance for improving material properties and broadening the application fields of materials. Among them, the hollow structures of cadmium sulfide and zinc sulfide have broad application prospects in the fields of optoelectronics, energy and medicine due to their special structures and properties, and have become research hotspots. On the one hand, the hollow structure of cadmium sulfide and zinc sulfide has a high specific surface area, and the hollow structure is suitable as a drug carrier. At the same time, the unique fluorescent properties of the material can track the entire drug transport and metabolism process in situ, which ha...

Examples

Embodiment 1

[0021] (1) Weigh 2 mmol of cadmium chloride and 2 mmol of sulfur powder, add them into 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min, and ultrasonic power is 400 W; (2) Weigh out 2 mmol of sodium borohydride, add into In 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min with ultrasonic power of 400 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), and continue the ultrasonic reaction for 120 min with ultrasonic power of 400 W; (4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 20°C for 24 h.

[0022] figure 1 and figure 2 The transmission electron micrographs and scanning electron micrographs of the prepared cadmium sulfide are respectively. It can be seen from the figure that the cadmium sulfide has a hollow nano-square structure, and the particle size is below 100 nm.

Embodiment 2

[0024] (1) Weigh 2 mmol of cadmium nitrate and 2 mmol of sulfur powder, add to 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min, ultrasonic power 100 W; (2) weigh 2 mmol of sodium borohydride, add to 500 In ml of tetrahydrofuran, ultrasonically disperse for 120 min, ultrasonic power 100 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), continue ultrasonic reaction for 120 min, ultrasonic power 100 W; ( 4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 200°C for 1 h. The result is similar to Example 1.

Embodiment 3

[0026] (1) Weigh 2 mmol of cadmium acetate and 2 mmol of sulfur powder, add to 300 ml of tetrahydrofuran, ultrasonically disperse for 60 min, ultrasonic power 200 W; (2) weigh 2 mmol of sodium borohydride, add to 300 In ml of tetrahydrofuran, ultrasonically disperse for 60 min, ultrasonic power 200 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), continue ultrasonic reaction for 60 min, ultrasonic power 200 W; ( 4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 100°C for 12 h. The result is similar to Example 1.

technical field

[0001] The invention relates to a method for preparing hollow nano-cubes of cadmium sulfide and zinc sulfide by a non-template method, belonging to the field of nanotechnology. Background technique

[0002] The preparation of nanomaterials with special structures, especially nanomaterials with hollow structures, is of great significance for improving material properties and broadening the application fields of materials. Among them, the hollow structures of cadmium sulfide and zinc sulfide have broad application prospects in the fields of optoelectronics, energy and medicine due to their special structures and properties, and have become research hotspots. On the one hand, the hollow structure of cadmium sulfide and zinc sulfide has a high specific surface area, and the hollow structure is suitable as a drug carrier. At the same time, the unique fluorescent properties of the material can track the entire drug transport and metabolism process in situ, which ha...

Examples

Embodiment 1

[0021] (1) Weigh 2 mmol of cadmium chloride and 2 mmol of sulfur powder, add them into 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min, and ultrasonic power is 400 W; (2) Weigh out 2 mmol of sodium borohydride, add into In 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min with ultrasonic power of 400 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), and continue the ultrasonic reaction for 120 min with ultrasonic power of 400 W; (4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 20°C for 24 h.

[0022] figure 1 and figure 2 The transmission electron micrographs and scanning electron micrographs of the prepared cadmium sulfide are respectively. It can be seen from the figure that the cadmium sulfide has a hollow nano-square structure, and the particle size is below 100 nm.

Embodiment 2

[0024] (1) Weigh 2 mmol of cadmium nitrate and 2 mmol of sulfur powder, add to 500 ml of tetrahydrofuran, ultrasonically disperse for 120 min, ultrasonic power 100 W; (2) weigh 2 mmol of sodium borohydride, add to 500 In ml of tetrahydrofuran, ultrasonically disperse for 120 min, ultrasonic power 100 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), continue ultrasonic reaction for 120 min, ultrasonic power 100 W; ( 4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 200°C for 1 h. The result is similar to Example 1.

Embodiment 3

[0026] (1) Weigh 2 mmol of cadmium acetate and 2 mmol of sulfur powder, add to 300 ml of tetrahydrofuran, ultrasonically disperse for 60 min, ultrasonic power 200 W; (2) weigh 2 mmol of sodium borohydride, add to 300 In ml of tetrahydrofuran, ultrasonically disperse for 60 min, ultrasonic power 200 W; (3) Add the solution obtained in step (2) dropwise to the solution obtained in step (1), continue ultrasonic reaction for 60 min, ultrasonic power 200 W; ( 4) The precipitate obtained in step (3) was centrifuged 5 times with absolute ethanol, and the obtained product was vacuum-dried at 100°C for 12 h. The result is similar to Example 1.

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