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PbS nanomaterial characterized by oriented attachment structure and preparation method thereof

A nanomaterial and structural feature technology, applied in the field of biomimetic synthesis and monomolecular membranes, can solve the problems of lack of structurally controllable PbS nanomaterials, insufficient regulation of morphology and structural features, environmental pollution, etc., and achieves simple process and equipment requirements. Low, improve the effect of environmental pollution

Inactive Publication Date: 2012-07-25
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in previous studies, the control of the morphology and structural characteristics of the material is still insufficient, especially the lack of methods that can effectively realize the structure controllable preparation of PbS nanomaterials with the characteristics of orientational adhesion structure, and most of them use H 2 The way of S inevitably brings some environmental pollution

Method used

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  • PbS nanomaterial characterized by oriented attachment structure and preparation method thereof
  • PbS nanomaterial characterized by oriented attachment structure and preparation method thereof
  • PbS nanomaterial characterized by oriented attachment structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Add 0.0497 g Pb(NO 3 ) 2 (purity 99%) was dissolved in deionized water to make 0.001 mol / L Pb(NO 3 ) 2 solution; 2) 1.127 g C 2 h 5 NS (purity 99.9%) was dissolved in deionized water to make 0.1 mol / L C 2 h 5 NS solution; 3) Prepare 0.001 mol / L AA chloroform solution; 4) Mix 150 mL each of the solutions prepared in step 1) and step 2) at about 23°C, put them into a small tank of KSV-5000 mini, and then draw them with a needle Clean the membrane several times for possible impurities. Add 80 μL of the AA solution prepared in step 3) to the surface dropwise, let stand for 15 minutes to let the chloroform volatilize, AA fully spreads on the surface of the solution to form a monolayer film, set the target pressure to 2 mN / m, and the moving speed of the baffle to 3 mm / m min. Seal the glass cover of the tank and let it stand for 14 hours. Thioacetamide is hydrolyzed to release sulfur ions and combine with lead ions in the solution to form lead sulfide.

[0022] Fro...

Embodiment 2

[0024] 1) Add 0.0497 g Pb(NO 3 ) 2 (purity 99%) was dissolved in deionized water to make 0.001 mol / L Pb(NO 3 ) 2 solution; 2) 0.3381 g C 2 h 5 NS (purity 99.9%) was dissolved in deionized water to make 0.03 mol / L C 2 h 5 NS solution; 3) Prepare 0.001 mol / L AA chloroform solution;

[0025] 4) Mix 150 mL each of the solutions prepared in step 1) and step 2) at about 23°C, put it into the small tank of KSV-5000 mini, and then use a needle to suck up the possible impurities to clear the film several times. Add 80 μL of the AA solution prepared in step 3) to the surface dropwise, let stand for 15 minutes to let the chloroform volatilize, AA fully spreads on the surface of the solution to form a monolayer film, set the target pressure to 2 mN / m, and the moving speed of the baffle to 3 mm / m min. Seal the glass cover of the mini tank and let it stand for 14 hours. Thioacetamide is hydrolyzed to release sulfur ions and combine with lead ions in the solution to form lead sulfide...

Embodiment 3

[0028] In step 2), 0.8452 g C 2 h 5 NS (purity 99.9%) was dissolved in deionized water to make 0.075 mol / L C 2 h 5 NS solution, others are with embodiment 1.

[0029] Analytical tests show that, see Figure 5 , the product is a three-legged PbS nanomaterial, and the length of each leg is about 150 nm.

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Abstract

The invention belongs to the technical field of biomimetic synthesis and monomolecular films, and particularly relates to a method for preparing a PbS nanomaterial characterized by oriented attachment structure by organic molecular film regulation. The PbS nanomaterial is tri-antennary with each antenna 70-300nm in length and is characterized by the oriented attachment structure. The method is simple in process, has moderate conditions and low equipment requirements, and is low in cost, pollution-free and easy for regulation.

Description

technical field [0001] The invention belongs to the technical field of biomimetic synthesis and monomolecular film, in particular to a method for preparing PbS nanometer material with oriented adhesion structure characteristics through regulation and control of organic molecular film. Background technique [0002] In recent years, PbS has received extensive attention as an important semiconductor material. There are many methods for preparing PbS semiconductor nanomaterials, among which biomimetic mineralization is simple and mild, which has unique advantages in the preparation of semiconductor materials. Some studies have used arachidic acid (AA) monomolecular film to induce the growth of discrete small triangular PbS crystals with uniform morphology and along the (111) crystal plane orientation at a high surface pressure of 30 mN / m; using PVK as an organic template, By adjusting H 2 A series of PbS crystals with different morphologies were obtained under the conditions o...

Claims

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Application Information

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IPC IPC(8): C30B29/46C30B29/60C30B7/10
Inventor 胡彬彬龚时江杜祖亮张兴堂
Owner HENAN UNIVERSITY
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