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Method for synthesizing eggplant-shaped Ag-Ag2S nano heterojunction in one-step

A technology of heterojunction and eggplant, which is applied in the field of preparation of silver nanomaterials, can solve the problems of few successful cases of nanoheterojunction preparation, and achieve the effects of no equipment requirements, simple operation process, and cheap and easy-to-obtain raw materials.

Inactive Publication Date: 2011-10-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently, noble metal nanoheterojunctions, such as Au-CdSe, Au-PbSe, Au-PbS, Au-ZnO, Au-Cu 2 S, Au-Ag 2 S, FePt-CdS, FePt-PbS / PbSe have been studied and made some progress, but Ag-Ag 2 There are few successful cases of S nano-heterojunction preparation

Method used

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  • Method for synthesizing eggplant-shaped Ag-Ag2S nano heterojunction in one-step
  • Method for synthesizing eggplant-shaped Ag-Ag2S nano heterojunction in one-step
  • Method for synthesizing eggplant-shaped Ag-Ag2S nano heterojunction in one-step

Examples

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Effect test

Embodiment 1

[0018] Ag-Ag 2 Synthesis of S nano-heterojunction: Measure 15mL of oleylamine into a reaction vessel, slowly heat up to 120°C under magnetic stirring, under nitrogen protection, and stabilize at 120°C for half an hour, remove water and dissolved oxygen, and then heat up to 180°C ℃, inject 0.02mol / L oleylamine solution of silver diethyldithiocarbamate precursor into it 5mL, the solution turns black immediately. After reacting for 30 min, it was naturally cooled to room temperature. The resulting black precipitate was washed and separated with excess ethanol to obtain .

Embodiment 2

[0020] Ag-Ag 2 Synthesis of S nano-heterojunction: Measure 10mL oleylamine into a round-bottomed flask, slowly raise the temperature to 110°C under magnetic stirring, under nitrogen protection, and stabilize at 110°C for 40min, remove water and dissolved oxygen, and then raise the temperature to 240°C , 15 mL of oleylamine solution of 0.05 mol / L silver diethyldithiocarbamate precursor was injected therein, and the solution turned black immediately. After reacting for 20 min, it was naturally cooled to room temperature. The resulting black precipitate was washed and separated with excess ethanol to obtain .

Embodiment 3

[0022] Ag-Ag 2 Synthesis of S nano-heterojunction: Measure 15mL of oleylamine into a reaction vessel, slowly raise the temperature to 120°C under magnetic stirring, under nitrogen protection, and stabilize at 120°C for half an hour, remove water and dissolved oxygen, and then raise the temperature to 320°C ℃, inject 12 mL of oleylamine solution of 0.07 mol / L silver diethyldithiocarbamate precursor into it, and the solution turns black immediately. After reacting for 60 min, it was naturally cooled to room temperature. The resulting black precipitate was washed and separated with excess ethanol to obtain .

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Abstract

The invention relates to a method for synthesizing eggplant-shaped Ag-Ag2S nano heterojunction in one-step. The method comprises the following steps of: placing oleylamine into a reactor, protecting by nitrogen, heating the oleylamine up to 110-140 DEG C and maintaining the temperature for 20-50 minutes; further heating up to 150-360 DEG C; injecting 0.02-1mol / L organic amine solution of silver diethyl dithiocarbamate; reacting for 2-60 minutes and naturally cooling to the room temperature; and finally washing and separating the obtained black sediments by ethanol, so as to obtain the eggplant-shaped Ag-Ag2S nano heterojunction. The preparation method in the invention is simple to operate, and has no requirements to equipment; the used solvents are all environmentally-friendly; no toxic substances are generated; and a simple new method for preparing Ag-Ag2S nano heterojunction is provided.

Description

technical field [0001] The invention belongs to the field of preparation of silver nanomaterials, in particular to a one-step synthesis of eggplant-like Ag-Ag 2 S nano-heterojunction approach. Background technique [0002] Due to their unique optical, electrical, magnetic and thermal properties, nanoparticles have received extensive attention in both basic theory and applications, especially semiconductor and transition metal nanoparticles, whose quantum size effect and surface effect make them useful in catalysis, It has broad application prospects in nonlinear optics and magnetic materials. Silver, for example, is a transition metal with a wide range of uses. Silver is sensitive to light and is widely used as a photosensitive material for film, photographic film and medical film; silver and its salts have a strong bactericidal function and can be used as a bactericidal material and medicine; silver nanoparticles have strong catalytic activity. For example, silver cataly...

Claims

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Application Information

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IPC IPC(8): B22F9/16
Inventor 胡俊青唐明华田启威陈志钢胡向华彭彦玲蒋扉然
Owner DONGHUA UNIV
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