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Method for synthesizing PbO/ PbS nuclear shell structure

A core-shell structure and synthesis method technology, applied in lead sulfide, lead oxide, lead monoxide and other directions, can solve the problems of poor controllability of PbS layer thickness, difficult to meet the requirements of high-tech fields, and difficult to obtain PbS shell, etc. Controllable thickness, easy mass production, single-component effect

Inactive Publication Date: 2012-10-10
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

However, there are few studies on the core-shell structure of PbO / PbS, and it is difficult to obtain a complete PbS shell, and the thickness of the PbS layer is poorly controllable, making it difficult to meet the requirements of high-tech fields.

Method used

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  • Method for synthesizing PbO/ PbS nuclear shell structure
  • Method for synthesizing PbO/ PbS nuclear shell structure
  • Method for synthesizing PbO/ PbS nuclear shell structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Weigh 2.23g PbO and 0.627g butyl xanthate according to the molar ratio of PbO:xanthate=3:1, put them into the reaction vessel after mixing, add a certain amount of double distilled water into the vessel, and stir and react at room temperature for 2 Hour.

[0030] (2) The substance obtained by the reaction was suction-filtered, washed three times with double distilled water, and vacuum-dried at 25° C. to obtain the precursor of the PbO / PbS core-shell structure.

[0031] (3) Calcining the precursor obtained in step (2) at 100° C. for 3 hours to obtain the PbO / PbS core-shell structure.

[0032] The XRD powder diffraction characterization of gained sample, see appendix figure 1

Embodiment 2

[0034] The difference from Example 1 is that the calcination temperature of the precursor of the PbO / PbS core-shell structure obtained in step (3) is changed to 200°C to obtain the PbO / PbS core-shell structure, and the rest of the conditions are exactly the same.

[0035] The XRD powder diffraction characterization of gained sample, see appendix figure 1 .

Embodiment 3

[0037] (1) Weigh 2.23g PbO and 0.376g butyl xanthate according to the molar ratio of PbO:xanthate=5:1, put them into the reaction vessel after mixing, add a certain amount of double distilled water into the vessel, and stir and react at room temperature for 3 Hour.

[0038] (2) The substance obtained by the reaction was suction-filtered, washed three times with twice distilled water, and vacuum-dried at 35° C. to obtain the precursor of the PbO / PbS core-shell structure.

[0039] (3) Baking the precursor obtained in step (2) at 50° C. for 3 hours to obtain a PbO / PbS core-shell structure.

[0040] The XRD powder diffraction characterization of gained sample, see appendix figure 2 .

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Abstract

The invention belongs to the technical field of artificial synthesis of natural minerals, and in particular relates to a method for synthesizing a PbO / PbS nuclear shell structure. According to the technical scheme, the method for synthesizing the PbO / PbS nuclear shell structure comprises the following steps of: weighing PbO and xanthate according to the molar ratio of (2-10): 1, mixing, putting into a reaction container, adding a certain quantity of distilled water into the container, and reacting for 2 to 4 hours with stirring at normal temperature; and roasting the obtained precursor for 2 to 5 hours at the temperature of between 50 and 250 DEG C. The PbO / PbS nuclear shell structure obtained by using the synthesizing method is high in purity, components of a surface sulfide layer are single, generation and thickness of lead sulfide serving as an inorganic phase are controllable, the reaction conditions are mild, characteristic equipment is not required, and large-scale production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of artificial synthesis of natural minerals, in particular to an artificial synthesis method of a PbO / PbS core-shell structure. Background technique [0002] PbO is an important industrial raw material with a bandgap of about 2eV and good semiconductor and optical properties. In view of the excellent performance in this respect, PbO is widely used in storage batteries, gas sensors, optical components, catalysts, alloys, coatings and lead glass. The band gap of PbS is 0.41eV, which belongs to the narrow band gap, and the Bohr radius is 18nm. It is a semiconductor material with good performance, and has excellent third-order nonlinear optical properties, so it is widely used in light-emitting diodes, infrared Detectors, light switches, infrared emitters, solar panels, interior paints, and lead sensors. The PbO / PbS core-shell structure has both the characteristics of PbO and PbS, and has broad application pro...

Claims

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Application Information

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IPC IPC(8): C01G21/21C01G21/06
Inventor 孙中溪卢靖洋董传山范迎菊齐长林葛东来
Owner UNIV OF JINAN
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