Preparation method of molybdenum dioxide nanorod

A technology of molybdenum dioxide and nanorods, which is applied in the field of nanomaterials, can solve the problems of uneven product morphology, harsh synthesis conditions, and high synthesis temperature, and achieve the effects of low cost, low raw material cost, and high reaction yield

Inactive Publication Date: 2012-12-12
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing molybdenum dioxide nanorods, which solves the problem of expensiv...

Method used

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  • Preparation method of molybdenum dioxide nanorod
  • Preparation method of molybdenum dioxide nanorod
  • Preparation method of molybdenum dioxide nanorod

Examples

Experimental program
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Embodiment 1

[0025] Dissolve sodium tungstate in dimethylformamide after grinding, and magnetically stir to obtain a concentration of 0.1mol L -1 The sodium molybdate suspension; in the case of continuing to stir, add 1ml acetic anhydride to the sodium molybdate suspension, after continuing to stir for 10min; slowly add concentrated hydrochloric acid to it to acidify it in the above suspension, concentrated After hydrochloric acid was added, the suspension became a yellow solution containing white precipitates. The amount of concentrated hydrochloric acid added was such that the pH value of the solution after acidification was 1.5, and stirring was continued for 15 minutes; after the stirring was completed, the yellow solution containing white precipitates after acidification was Filter to remove the white precipitate to obtain a yellow transparent filtrate; under the condition of magnetic stirring, the concentration is 0.3mol L -1 The dimethylformamide solution of tetrabutylammonium bromi...

Embodiment 2

[0028] Dissolve sodium tungstate in dimethylformamide after grinding, and magnetically stir to obtain a concentration of 0.4mol L -1 The sodium molybdate suspension; in the situation of continuing to stir, add 3ml acetic anhydride to the sodium molybdate suspension, after continuing to stir for 10min; slowly add concentrated hydrochloric acid to it to acidify it in the above suspension, concentrated After hydrochloric acid was added, the suspension became a yellow solution containing white precipitates. The amount of concentrated hydrochloric acid added was such that the pH value of the solution after acidification was 0.5, and stirring was continued for 15 minutes; after the stirring was completed, the yellow solution containing white precipitates after acidification was Filter to remove the white precipitate to obtain a yellow transparent filtrate; under the condition of magnetic stirring, the concentration is 0.5mol L -1 The dimethylformamide solution of tetrabutylammonium ...

Embodiment 3

[0030] Dissolve sodium tungstate in dimethylformamide after grinding, and magnetically stir to obtain a concentration of 0.3mol L -1 The sodium molybdate suspension; in the case of continuing to stir, add 2ml acetic anhydride to the sodium molybdate suspension, after continuing to stir for 10min; slowly add concentrated hydrochloric acid to it to acidify it in the above suspension, concentrated After hydrochloric acid was added, the suspension became a yellow solution containing white precipitates. The added amount of concentrated hydrochloric acid finally made the pH value of the acidified solution 1.0, and continued to stir for 15 minutes; after the stirring was completed, the acidified yellow solution containing white precipitates Filter to remove the white precipitate to obtain a yellow transparent filtrate; under the condition of magnetic stirring, the concentration is 0.4mol L -1 The dimethylformamide solution of tetrabutylammonium bromide was added to the obtained yello...

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Abstract

The invention discloses a preparation method of a molybdenum dioxide nanorod. The preparation method comprises the following steps of: by taking sodium molybdate as a molybdenum source, acetic oxide as an additive, dimethylformamide as a solvent, concentrated hydrochloric acid as an acidifier, and tetrabutylammonium bromide as a settling agent, through a simple experiment device and reaction steps, controlling concentration of molybdate suspension, an additive amount of the additive, a pH value of the solution and the amount of the settling agent, recrystalizing and purifying to obtain precursor tetrabutyl ammonium hexamolybdate; and thermally treating the precursor tetrabutyl ammonium hexamolybdate in a quartz tube under an inert atmosphere to have decomposition to obtain a monoclinic phase molybdenum dioxide nanorod. The method, prepared by the invention, has the advantages of low cost and high reaction yield, and capability of overcoming the vices of expensive instrument device, rigorous reaction conditions and reduction at high temperature with H2 with safety hidden trouble of the conventional preparation method.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of molybdenum dioxide nanorods. Background technique [0002] The transition metal oxide molybdenum dioxide belongs to the monoclinic system with a distorted rutile crystal structure. Due to its special structure, molybdenum dioxide has high electrical conductivity, high melting point, high chemical stability, and its efficient charge transport characteristics make it widely used in catalysts, sensors, electrochromic displays, recording materials, electrochemical supercapacitors, ion batteries And field emission materials and other aspects have broad application prospects. [0003] At present, the preparation methods of molybdenum dioxide nanomaterials have been reported. Wang Zhonglin et al. (Advanced Materials, 2003, 15:1835) heated metal molybdenum to 1100°C in a vacuum furnace, and then introduced protective gas Ar to obtain moly...

Claims

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Application Information

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IPC IPC(8): C01G39/02B82Y30/00
Inventor 高宾张晓军
Owner XI'AN POLYTECHNIC UNIVERSITY
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