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Preparation method of functionalized manganese dioxide nanowire membrane

A manganese dioxide nanometer and functionalization technology, applied in the direction of manganese oxide/manganese hydroxide, etc., can solve the problems of complex vapor deposition process, high technical requirements, hindering the industrial application of preparation methods, etc., and achieve simple process and strong applicability , the effect of easy operation

Inactive Publication Date: 2015-02-11
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process of vapor deposition is complicated, the technical requirements are high, and high temperature is required for hydrophobic / hydrophilic conversion, which hinders the industrial application of this preparation method

Method used

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  • Preparation method of functionalized manganese dioxide nanowire membrane
  • Preparation method of functionalized manganese dioxide nanowire membrane
  • Preparation method of functionalized manganese dioxide nanowire membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 0.2 g of manganese dioxide nanowires were ultrasonically dispersed in a 20 ml methanol alcohol flask, 0.4 g of n-octyltrimethoxysilane was added, and refluxed in a water bath at 50° C. for 8 hours to obtain a functionalized manganese dioxide nanowire dispersion. The above dispersion liquid was added in batches into a polytetrafluoroethylene circular tank, dried at 60° C. for 12 hours, and the functionalized manganese dioxide nanowire film could be obtained by peeling off the surface of the polytetrafluoroethylene.

Embodiment 2

[0019] 0.2 g of manganese dioxide nanowires were ultrasonically dispersed in a 20 ml toluene flask, 0.1 g of n-decyltrimethoxysilane was added, and refluxed in an oil bath at 110° C. for 2 hours to obtain a functionalized manganese dioxide nanowire dispersion. The above dispersion was vacuum filtered with a separatory funnel, washed three times with ethanol, and dried at 60° C. for 12 hours to obtain a functionalized manganese dioxide nanowire membrane.

Embodiment 3

[0021] 0.2 g of manganese dioxide nanowires were ultrasonically dispersed in a 20 ml toluene flask, 0.2 g of n-octyltriethoxysilane was added, and refluxed in a water bath at 90° C. for 10 h to obtain a functionalized manganese dioxide nanowire dispersion. The above dispersion was vacuum filtered with a separatory funnel, washed three times with ethanol, and dried at 60° C. for 12 hours to obtain a functionalized manganese dioxide nanowire membrane.

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Abstract

The invention discloses a preparation method of a functionalized manganese dioxide nanowire membrane. The method comprises the following steps of: ultrasonically dispersing manganese dioxide nanowires in a solvent, and then, adding additive silane to carry out a heating reflux reaction to obtain a functionalized manganese dioxide nanowire dispersion liquid; and then, carrying out membrane formation on the functionalized manganese dioxide nanowire dispersion liquid to obtain the functionalized manganese dioxide nanowire membrane. The functionalized manganese dioxide nanowire membrane prepared by using the preparation method has the dewatering / water loving reversible conversion wettability, can realize dewatering / water loving reversible conversion through simply and dropwise adding a solvent and can be widely used in the industrial processes such as absorption, separation and catalysis.

Description

technical field [0001] The invention relates to a preparation method of a functionalized manganese dioxide nanowire film, belonging to the technical field of functional materials. Background technique [0002] Manganese dioxide (MnO 2 ) is an inexpensive transition metal material widely used in adsorption, separation, catalysis, and electrochemistry due to its excellent molecular adsorption, cation exchange, redox, and electromagnetic properties. Currently used macroscopic MnO 2 The material is mainly in the form of powder, and other MnO with multidimensional structure 2 The application of materials such as membranes, columns, sequences, etc. is still relatively small. The Netherlands "Applied Surface Science" (Applied Surface Science, 2004, volume 236, page 217) reported that γ-MnO was prepared by suspended particle sintering method. 2 Nano molecular sieve membrane, the membrane has good H 2 / Ar separation performance and high catalytic activity for oxidative dehydroge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G45/02
Inventor 叶飞蓝邦孙明余林林婷程高
Owner GUANGDONG UNIV OF TECH
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