Preparation method and application of zinc germanate nanorod modified functionalized graphene composite material

A technology of composite materials and nanorods, which is applied in the field of preparation of functionalized graphene composite materials, can solve problems such as limited applications, and achieve the effects of low detection limit, good selectivity, and stable reproducibility

Active Publication Date: 2019-06-21
ZHENGZHOU UNIV
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Problems solved by technology

However, graphene-based composites still have some deficiencies, such as its hydrophobicity and easy aggregation
However, these shortcomings greatly limit their further application.

Method used

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  • Preparation method and application of zinc germanate nanorod modified functionalized graphene composite material
  • Preparation method and application of zinc germanate nanorod modified functionalized graphene composite material
  • Preparation method and application of zinc germanate nanorod modified functionalized graphene composite material

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate the present invention rather than to limit the scope of the present invention, and those skilled in the art can make some non-essential improvements and adjustments based on the content of the above-mentioned invention.

[0032] Electrochemical workstation (RST 3000, Zhengzhou Ruisite Instrument Co., Ltd., Zhengzhou); three-electrode system: counter electrode (platinum wire electrode, diameter 0.5mm), reference electrode (saturated calomel electrode) and working electrode (bare electrode or Modified electrode, diameter 3mm); transmission electron microscope (JEOL JEM-2100 EX, Hiroshima, Japan); infrared spectrometer (NEXUS 470, Thermo Nicolet Corporation, Santa Clara, USA); UV-visible spectrometer (Lambda 35, Beijing, China); X -Ray diffractometer (Shimadzu, Japan); pH meter (PHS-3C, Shanghai Jing...

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Abstract

The invention discloses a preparation method and application of a zinc germanate nanorod modified functionalized graphene composite material, which comprises the following steps: adding PDDA into GO dispersion liquid, after half an hour, adding GeO2 and Zn (CH3COO)2.H2O into the mixed liquid, and carrying out ultrasonic treatment on the mixed liquid for 1 hour to fully mix the GeO2 and the Zn (CH3COO)2.H2O; transferring into a reaction kettle, reacting for 24 hours under the condition of 200 DEG C, centrifuging, washing and drying an obtained reaction product to obtain Zn2GeO4-PDDA-GR nanocomposite material; dispensing 5[mu]L of Zn2GeO4-PDDA-GR dispersion liquid by using a pipette on the surface of the bare glassy carbon electrode and dried under an infrared lamp to obtain the nano sensorZn2GeO4-PDDA-GR/GCE. When the sensor is used for detecting bergenin in an actual sample bergenin tablet, the sensor has the advantages of high sensitivity, low detection limit and the like, and also has the characteristics of good selectivity, high reproducibility and stability.

Description

Technical field [0001] The invention belongs to the technical field of composite materials, and specifically relates to a preparation method and application of a functionalized graphene composite material modified by zinc germanate nanorods. Background technique [0002] In the past few years, semiconductor oxides with low-dimensional structures have been widely used due to their excellent optical transparency, large specific surface area, excellent catalytic performance and special adsorption performance. In the electrochemical field, binary oxides are widely used, such as SnO 2 , TiO 2 , ZrO 2 Or MnO 2 Wait. In recent years, ternary oxides such as germanate have attracted attention in many fields, such as lithium ion batteries, capacitors, and electrochemical sensors. As zinc germanate nanorods (Zn 2 GeO 4 Nanorods) have a high specific surface area and excellent optical, magnetic and electrochemical properties, so they have attracted the attention of many scientists. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48B82Y30/00B82Y40/00B82Y15/00
Inventor 邹丽娜
Owner ZHENGZHOU UNIV
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