Method for preparing single crystal silver nano-wire by plant biomass reduction

A technology for plant biomass and silver nanowires, which is applied in the field of preparing single crystal silver nanowires by reducing plant biomass, can solve the problems of high reduction temperature, high preparation cost, high price, etc., and achieves mild reaction conditions and good dispersibility. , the effect of high stability

Inactive Publication Date: 2009-08-05
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is a relatively easy method for preparing silver nanowires at present, but this method has the following disadvantages: (1) the process uses chemical reagents PVP and ethylene glycol that are easy to pollute the environment; (2) the reduction temperature is relatively high (160 ° C ); (3) using expensive Pt nanoparticles as seeds, the preparation cost is high; (4) the resulting silver nanowires are not single crystal

Method used

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  • Method for preparing single crystal silver nano-wire by plant biomass reduction
  • Method for preparing single crystal silver nano-wire by plant biomass reduction
  • Method for preparing single crystal silver nano-wire by plant biomass reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Accurately weigh 2.0 g of ground sausage leaf dry powder, add 50 mL of distilled water to boil, keep for 5 min, and filter the boiling liquid after cooling to room temperature, and dilute the filtrate to 50 mL with distilled water to obtain a sausage leaf extract with a concentration of 40 g / L; Mix 25mL of this extract with 25mL of silver nitrate solution with a molar concentration of 2mmol / L, place in a constant temperature water-bath shaker (30°C, 150rpm) and shake for 24h to obtain silver particles with a length of 0.5-15μm and an average diameter of 52.7nm. Nanowires. figure 1 Provide the TEM picture of the silver nanowire prepared by the present embodiment, from figure 1 It can be seen that there is formation of silver nanowires. figure 2 Give the SAED picture of the silver nanowire that present embodiment prepares, from figure 2 It can be seen that the diffraction patterns are regularly arranged spots, which proves that the obtained silver nanowires are single...

Embodiment 2

[0021] Accurately weigh 2.0 g of ground sausage leaf dry powder, add 50 mL of distilled water to boil, keep for 5 min, and filter the boiling liquid after cooling to room temperature, and dilute the filtrate to 50 mL with distilled water to obtain a sausage leaf extract with a concentration of 40 g / L; Mix 50mL of this extract with 50mL of silver nitrate solution with a molar concentration of 2mmol / L, place in a constant temperature water-bath shaker (30°C, 150rpm) and shake for 48h to obtain silver particles with a length of 0.5-30μm and an average diameter of 85.4nm. Nanowires. image 3 The TEM picture of the silver nanowire prepared for this embodiment, from image 3 The formation of many silver nanowires can be seen in .

Embodiment 3

[0023] Accurately weigh 2.0 g of ground sausage leaf dry powder, add 50 mL of distilled water to boil, keep for 5 min, and filter the boiling liquid after cooling to room temperature, and dilute the filtrate to 50 mL with distilled water to obtain a sausage leaf extract with a concentration of 40 g / L; Mix 25mL of this extract with 25mL of silver nitrate solution with a molar concentration of 3mmol / L, place in a constant temperature water bath shaker (30°C, 150rpm) and shake for 52h to obtain silver particles with a length of 0.3-60μm and an average diameter of 67.6nm. Nanowires. Figure 4 The TEM picture of the silver nanowire prepared for this embodiment, from Figure 4 The formation of a large number of silver nanowires can be seen in .

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Abstract

The invention relates to a method of preparing single-crystal and silver-nanometer rice noodles by reducing plant biomass, in particular to a method of preparing one-dimensional nanometer material. The invention provides a method of preparing the single-crystal and silver-nanometer rice noodles by reducing the plant biomass, which has the advantages that the technology is simple, convenient, rapid, economic and environment-friendly and has warm reaction conditions. The method comprises the following steps: adding 0.5g to 4.0g of plant leave dry powder to 50mL of distilled water to be boiled and cooled to a room temperature before being filtered; measuring filtrate to 50mL by the distilled water to obtain a plant leave extracting solution with the concentration of 10-80 g / L; mixing the plant leave extracting solution with a silver nitrate solution with the molar concentration of 0.5-8mmol / L and adding the solution into a water bath table concentrator for an oscillatory reaction so as to obtain a single-crystal and silver-nanometer rice noodle product.

Description

technical field [0001] The invention relates to a method for preparing one-dimensional nanometer materials, in particular to a method for preparing single crystal silver nanowires by reducing plant biomass. Background technique [0002] One-dimensional nanomaterials, such as nanowires, nanoribbons, nanofibers, nanorods, nanotubes, etc., have unique optical, electrical, magnetic, catalytic and other physical and chemical properties, so they are used in optical fibers, surface-enhanced fluorescence spectroscopy, Surface-enhanced Raman spectroscopy (SERS), ultra-large-scale integration (ULSC), chemical / biological sensors, nanoprobes, nanocomposites, etc. have broad application prospects. With the integration and miniaturization of optoelectronic components, metal nanowires with excellent electrical and thermal conductivity have attracted more and more attention. Among many metals, silver has the best electrical conductivity, so silver nanowires have become development hotspot....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/02C30B29/62C30B7/14B22F9/24
Inventor 李清彪王文塔林丽芹黄加乐孙道华杨欣王惠璇周尧
Owner XIAMEN UNIV
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