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pt-cu2o wrapped cu nanowires and its preparation method and application

A pt-cu2o and nanowire technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve difficult preparation problems, achieve large specific surface area, The effect of improving photocatalytic efficiency and simple and easy preparation and operation method

Active Publication Date: 2019-09-03
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For current Cu 2 O-Cu is a shortcoming that the semiconductor-metal structure is difficult to prepare. The present invention proposes to prepare Cu by in-situ oxidation of Cu nanowires. 2 O, again in Cu 2 The method of doping rare metals on the O@Cu body is simple and convenient, and can use the Schottky barrier of the semiconductor-metal structure and metal doping to improve the photocatalytic efficiency of cuprous oxide

Method used

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  • pt-cu2o wrapped cu nanowires and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0030] Preparation of Pt-Cu 2 O wrapped Cu nanowires

[0031] Add 120 mg of copper nanowires and 200 mL of deionized water to a round-bottomed flask, react in a water bath at 70°C for 6 hours, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuo. Cu 2 O is a nanowire with Cu as the core. Prepared Cu 2 60 mg of nanowires with O as the shell and Cu as the core are put into a small beaker, and 0.4 mL (mass fraction is 15%) of chloroplatinic acid solution is slowly added dropwise to the beaker. The solution changed from the previous light yellow to light blue, and the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Pt-Cu with a Pt-doped mass fraction of 2%. 2 O wrapped Cu nanowires.

[0032] Utilize scanning electron microscope (SEM), electronic energy spectrum analysis (EDS) to analyze and characterize the obtain...

Embodiment 2

[0034] Preparation of Pt-Cu 2 O wrapped Cu nanowires

[0035] Add 120 mg of copper nanowires and 200 mL of deionized water to a round-bottomed flask, react in a water bath at 70°C for 6 hours, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuo. Cu 2 O is a nanowire with Cu as the core. Prepared Cu 2 60 mg of nanowires with O as the shell and Cu as the core are put into a small beaker, and 0.8 mL (mass fraction is 15%) of chloroplatinic acid solution is slowly added dropwise to the beaker. The solution changed from light yellow to light blue before, and the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Pt-Cu with a mass fraction of Pt doping of 4%. 2 O wrapped Cu nanowires.

Embodiment 3

[0037] Preparation of Pt-Cu 2 O wrapped Cu nanowires

[0038] Add 120 mg of copper nanowires and 200 mL of deionized water to a round bottom flask, react in a water bath at 70 ° C for 6 h, then cool to room temperature, filter, wash the filter cake with absolute ethanol and distilled water several times, and dry it in vacuum Cu 2 O is a nanowire with Cu as the core. Prepared Cu 2 60 mg of nanowires with O as the shell and Cu as the core are put into a small beaker, and 1 mL (mass fraction is 15%) of chloroplatinic acid solution is slowly added dropwise to the beaker. From the previous light yellow to light blue, the precipitate was separated by centrifugation, washed several times with absolute ethanol and deionized water, and dried to obtain Pt-Cu with a Pt-doped mass fraction of 5%. 2 O wrapped Cu nanowires.

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Abstract

The invention provides a Pt-Cu2O coated Cu nanowire. The preparation method comprises the following steps: mixing a Cu nanowire and deionized water, reacting at the temperature of 60-80 DEG C for 5-7 hours, cooling to room temperature, filtering, washing, and performing vacuum drying so as to obtain a nanowire taking Cu2O as a shell and taking Cu as a core; dripping chloroplatinic acid solution into the nanowire taking Cu2O as the shell and taking Cu as the core at room temperature, standing for 25-30 seconds after dripping completion, centrifuging, washing the precipitate, and drying, thereby obtaining the final product. The Pt-Cu2O coated Cu nanowire prepared by the invention can be applied to a reaction for performing photocatalytic degradation on organic pollutants in dyestuff wastewater, and the photocatalytic efficiency is high.

Description

[0001] (1) Technical field [0002] The present invention relates to a kind of Pt-Cu 2 O-wrapped Cu nanowires and its preparation method and application. [0003] (2) Background technology [0004] Since the 1970s, photocatalytic technology has attracted widespread attention in the treatment of dye wastewater, but the traditional photocatalyst TiO 2 The energy band is too narrow, and the utilization rate of sunlight is too low. Cu 2 As a non-toxic, P-type semiconductor material with special optical properties, O has a band gap between 2 and 2.2 eV. Compared with common catalysts, O has the advantage of absorbing most of the visible light. Chemistry has a good application prospect. But Cu 2 O is unstable, and the photogenerated electron-holes formed by it also have the disadvantage of easy recombination, so the research on its modification has become a research hotspot, among which the more popular ones are heterojunction, metal doping and non-metal doping. [0005] (3) Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J23/8926C02F2101/40C02F2101/38C02F2101/308C02F2101/34C02F2305/10B01J35/39
Inventor 黄新文凌姝琪刘宗健
Owner ZHEJIANG UNIV OF TECH
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