Preparation method of alloy semiconductor composite nano material based on aqueous phase synthesis and alloy semiconductor composite nano material

A composite nanomaterial and semiconductor technology, applied in the field of alloy nanomaterial synthesis, can solve the problems of poor performance improvement ability of alloy semiconductor composite nanomaterials, and achieve the effects of improving photothermal conversion performance, easy control, and green and simple synthesis mechanism.

Active Publication Date: 2020-11-17
JIHUA LAB
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Problems solved by technology

[0012] In view of the above-mentioned prior art, the purpose of the present invention is to provide a method for preparing alloy semiconductor composite nanomaterials based on aqueous phase synthesis and a

Method used

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  • Preparation method of alloy semiconductor composite nano material based on aqueous phase synthesis and alloy semiconductor composite nano material
  • Preparation method of alloy semiconductor composite nano material based on aqueous phase synthesis and alloy semiconductor composite nano material
  • Preparation method of alloy semiconductor composite nano material based on aqueous phase synthesis and alloy semiconductor composite nano material

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preparation example Construction

[0041] The existing preparation methods of photothermal composite nanomaterials are relatively complicated, and the photothermal performance of the composite material is limited, due to the unsatisfactory coupling effect of the localized surface plasmon of the material, the large gap between the materials, and the excessive thickness of the composite shell , which is not conducive to the application of the material. Based on the synthesis of the original nanomaterials, the method provided by the present invention uses the irregular alloy material as the base to design and prepare an alloy semiconductor composite nanomaterial by using the chemical replacement method. By effectively coupling the LSPR of the two materials, the The light-to-heat conversion efficiency of nanomaterials.

[0042] The method for preparing alloy semiconductor composite nanomaterials based on aqueous phase synthesis provided by the present invention is simply divided into four parts: solution preparatio...

Embodiment 1

[0061] 1. Solution preparation

[0062] Weigh 1 g of chloroauric acid trihydrate (HAuCl 4 ·3H 2 O, Au 23.5-23.8%) powder was added to 80 mL of deionized water three times, and ultrasonically dissolved to obtain a 1% wt chloroauric acid solution; 100 mg of trisodium citrate (C 6 h 5 Na 3 o 7 , 99%) powder was added to 10 mL of deionized water for three times, and ultrasonically dissolved to obtain a 1% wt trisodium citrate solution; weigh 0.02 g of silver nitrate (AgNO 3 , 98%) powder was added into 10 mL of deionized water three times, and dissolved by ultrasonic to obtain a 2% wt silver nitrate solution.

[0063] Seed Growth Solution 1 made of Tween 20 (C 58 h 114 o 26 ), copper acetate (Cu(Ac) 2 ·H 2 O, 98%), sodium hydroxide (NaOH, 99%) and trisodium citrate, weighed 0.2 mL Tween 20, 0.39 g copper acetate, 0.16 g sodium hydroxide and 0.33 g trisodium citrate powder, Add it into 40 mL of deionized water three times, and dissolve it ultrasonically to obtain a 2% wt...

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Abstract

The invention discloses a preparation method of alloy semiconductor composite nano-material based on aqueous phase synthesis and the alloy semiconductor composite nano-material. The preparation methodcomprises the steps of nanogold preparation, nano-alloy preparation and composite nano-material preparation. According to the preparation method provided by the invention, two or more composite nanomaterials with ideal photoelectric application properties and controllable particle size and thickness can be prepared by combining a seed growth method and a chemical replacement method, and comparedwith other single-component or composite materials compounded through other manners, local surface plasma coupling is more ideal; and the photothermal conversion efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of synthesis of alloy nanomaterials, and mainly relates to a method for preparing alloy semiconductor composite nanomaterials based on aqueous phase synthesis and alloy semiconductor composite nanomaterials. Background technique [0002] The de Broglie wave of the surface valence electrons of nanomaterials matches the particle size. At this time, the quantum size effect will induce the electromagnetic and optical properties of the material to change, with stable properties, heat resistance, high catalytic activity, and good electrochemical and electromagnetic properties. The optoelectronic properties of nanomaterials are largely determined by the quantum activity of surface electrons. Due to the diverse combination of material components and the expansion of the allowed jumping range of surface valence electrons in composite nanomaterials, the electronic coupling and strain between multiple electrons The eff...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B22F1/02C01G3/12B82Y30/00B82Y40/00
CPCB22F9/24C01G3/12B82Y30/00B82Y40/00C01P2004/03C01P2004/04C01P2002/84C01P2004/80B22F1/07B22F1/054B22F1/16
Inventor 方威冯杰胡琅胡强徐平郭远军黄丽玲何斌
Owner JIHUA LAB
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