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Three-dimensional macro-porous structured molybdenum dioxide supported palladium particle material and synthetic method thereof

A three-dimensional macroporous, molybdenum dioxide technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve problems such as plastic deformation and performance degradation, and achieve current Increased density, improved catalytic performance, and shorter time-consuming effects

Inactive Publication Date: 2015-08-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the irreversible volume expansion can lead to plastic deformation and performance degradation, it is necessary to further study its structure

Method used

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  • Three-dimensional macro-porous structured molybdenum dioxide supported palladium particle material and synthetic method thereof
  • Three-dimensional macro-porous structured molybdenum dioxide supported palladium particle material and synthetic method thereof
  • Three-dimensional macro-porous structured molybdenum dioxide supported palladium particle material and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, heat treatment for 2 hours from 20°C to 650°C under the protection of flowing argon atmosphere, and the heating rate is 5°C / min, and then cool with the furnace to obtain Three-dimensional macroporous MoO with a pore size of 200 nm 2 .

[0022] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, stannous chloride (mass ratio is 20:1:0.1) mixed suspension, hydrochloric acid is 1mol / L hydrogen chloride aqueous solution, stir with a magnetic stirrer for 30 minutes, centrifuge to get the precipitate things. Put the precipitate into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred with a magne...

Embodiment 2

[0024] Take 2g of the template and put it into 10ml of 0.05M MoCl 5Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 25°C to 640°C for 1.5 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 350 nm was obtained. 2 .

[0025] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, and a mixed suspension with a submass ratio of chloride (20:1:0.1), the hydrochloric acid is 3mol / L hydrogen chloride aqueous solution, and the precipitate is put into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred with a magnetic stirrer for 30 minutes, centrifuged to take the precipit...

Embodiment 3

[0027] Take 2g of the template and put it into 10ml of 0.05M MoCl 5 Put the beaker into a 50°C incubator, seal the beaker to prevent the volatilization of water, and oxidize the solution in about two days, filter it several times and dry it to obtain a blue solid. Put this solid in a crucible and put it into a heating furnace that can pass through a protective atmosphere, and heat it from 22°C to 645°C for 2 hours under the protection of a flowing argon atmosphere, and the heating rate is about 8°C / min. After cooling in the furnace, a three-dimensional macroporous MoO with a pore size of 400 nm was obtained. 2 .

[0028] Obtained MoO 2 Put 20 mg into 20 ml of water, hydrochloric acid, stannous chloride (mass ratio is 20:1:0.1) mixed suspension, hydrochloric acid is 5mol / L hydrogen chloride aqueous solution, stir with a magnetic stirrer for 30 minutes, centrifuge to get the precipitate things. Put the precipitate into PdCl 2 Solution (10mL water, 0.5g PdCl 2 ), stirred wi...

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Abstract

The invention discloses a three-dimensional macro-porous structured molybdenum dioxide supported palladium particle material and a synthetic method thereof. A mass ratio of molybdenum dioxide to palladium is 20:(0.06-0.6), the aperture of molybdenum dioxide is 200-400nm, the particle size of palladium particles is 5-10nm, an ordered polymethyl methacrylate microsphere colloid crystal template is used to prepare a three-dimensional macro-porous molybdenum dioxide structure, and the palladium particles are supported on the three-dimensional macro-porous molybdenum dioxide structure. The synthetic method has the advantages of low enforcement cost, simple operation, low pollution, high efficiency and economy, and the material disclosed in the invention has a stable structure and has an electrocatalysis performance.

Description

technical field [0001] The invention relates to a novel nanometer material and a synthesis method thereof, in particular to a three-dimensional macroporous structure molybdenum dioxide-loaded palladium particle material and a synthesis method thereof. Background technique [0002] transition metal oxide Mo0 2 Belonging to the monoclinic system, with a distorted rutile crystal structure, Mo0 2 It is a transition metal oxide with high conductivity, high melting point, and high chemical stability. Its high-efficiency charge transport properties make it widely used in catalysts, sensors, electrochromic displays, recording materials, electrochemical supercapacitors, Li-ion batteries, and field Emission materials and other aspects have broad application prospects. layered structure MoO 2 It has low resistivity, high electrochemical activity and high stability, exhibits good catalytic performance, and has been widely used in the application of catalytic materials, and has been a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/652B01J35/10
CPCB01J23/6525B01J37/0207B01J37/082B01J35/33B01J35/396B01J35/60B01J35/651
Inventor 李彬彬梁砚琴崔振铎杨贤金朱胜利李朝阳
Owner TIANJIN UNIV
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