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Preparation method for cuprous oxide micron/nano crystal with controllable morphology

A technology of cuprous oxide and nanocrystals, applied in the direction of copper oxide/copper hydroxide, nanotechnology, etc., can solve the problems of environmental pollution, high cost of micro/nano cuprous oxide, etc., and achieve low preparation cost, cheap raw material price, and Source Rich Effects

Inactive Publication Date: 2012-07-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention mainly solves the technical problems of high cost and environmental pollution in the preparation process of micro / nano cuprous oxide; and provides a method for preparing micro / nano crystals of cuprous oxide with controllable morphology

Method used

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  • Preparation method for cuprous oxide micron/nano crystal with controllable morphology
  • Preparation method for cuprous oxide micron/nano crystal with controllable morphology
  • Preparation method for cuprous oxide micron/nano crystal with controllable morphology

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specific Embodiment approach 1

[0017] Specific embodiment 1: The preparation method of the shape-controllable cuprous oxide micro / nano crystal in this embodiment is carried out according to the following steps:

[0018] Step 1. Add 0.002-0.1mol copper salt into 15mL-30mL ultrapure water, stir with a magnetic stirrer at a rate of 500-1000r / min until the copper salt is completely dissolved, and then set the molar ratio of copper ion to lactic acid as 1: (5-20) into lactic acid, continue to stir for 30-60 minutes, then adjust the pH value to 7.0-13.0 with alkaline solution, then cool to 25°C and set the volume to 100mL, measure the pH value, and obtain solution A;

[0019] Step 2. Then move the solution A to the cleaned hydrothermal reaction kettle, close the reaction kettle, put the hydrothermal reaction kettle into the oven, adjust the temperature of the oven to 50-200°C, keep it warm for 2-48 hours and then cool it down naturally to room temperature, take it out and wash it with ultrapure water for three ti...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that: Step 1 adds 0.03-0.08 mol of copper salt into 20 mL of ultrapure water. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the molar ratio of copper ions to lactic acid in Step 1 is 1: (6-15). Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a preparation method for cuprous oxide micron / nano crystal with controllable morphology, relating to the preparation method for the cuprous oxide micron / nano crystal. The invention mainly solves the technical problems of high cost and environmental pollution in the preparation process of the micron / nano cuprous oxide. The method comprises the following steps of: 1, dissolving copper salt into ultrapure water, pouring lactic acid, continuously stirring, regulating a pH value, cooling to the temperature of 25 DEG C, keeping constant volume, measuring the pH value, and obtaining solution A; 2, moving the solution A to a hydrothermal reaction kettle, sealing the reaction kettle, putting the hydrothermal reaction kettle into a drying oven, keeping the temperature, naturally cooling to a room temperature, centrifugally washing by using the ultrapure water, centrifugally washing by using anhydrous ethanol, transferring the reaction kettle onto watch glass, and drying the reaction kettle in the drying oven; and thus obtaining the cuprous oxide micron / nano crystal. The preparation method for the cuprous oxide micron / nano crystal with the controllable morphology has the advantage of simpleness and practicability, simple equipment operation, low raw material price, easy synthesis, less pollution to environment and high synthetic concentration, the problem of the cost of the morphology control and industrialized large-scale synthesis in the prior art is solved, and the industrial production is facilitated.

Description

technical field [0001] The invention relates to a method for preparing cuprous oxide micro / nano crystals; in particular, it relates to a preparation method for shape-controllable cuprous oxide micro / nano crystals. Background technique [0002] Cuprous oxide is a semiconductor material with a p-type direct bandgap. The forbidden band width is 1.9-2.2ev. Cuprous oxide semiconductor material can be excited under visible light (wavelength 400-800nm), and can be used in solar energy conversion, micro Electronics, magnetic storage, catalysis and gas sensing and other fields. [0003] The preparation of cuprous oxide nanomaterials has always been one of the hot research areas. Cuprous oxide thin film materials also have good applications in solar energy conversion. For example, Yan Zipeng and others prepared p-type Cu by electrochemical method 2 O semiconductor thin film (Journal of Xi'an Jiaotong University, 2011, 45(3): 121-124), and in the study of direct conversion of solar ...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00
Inventor 赵九蓬丁艳波李垚杨丽丽辛伍红张鑫
Owner HARBIN INST OF TECH
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