Method for preparing nano-grade rutile phase RuO2-SnO2 oxide

A rutile phase, ruo2-sno2 technology, applied in the field of electrochemistry, can solve the problems of unsatisfactory comprehensive performance of titanium anodes and difficulties in technology promotion, and achieve the effect of convenient operation and simple process

Inactive Publication Date: 2008-05-21
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is quite difficult to promote the technology of this preparation method.
Although the sol-gel method is considered to be the most promising preparation method, the overall performance of the prepared titanium anode is still not ideal

Method used

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  • Method for preparing nano-grade rutile phase RuO2-SnO2 oxide

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh 1mol of SnCl 4 ·6H 2 O was completely dissolved in absolute ethanol, 3 mol of citric acid was weighed and completely dissolved in ethanol, and then SnCl 4 The ethanol solution was added dropwise to the citric acid ethanol solution to form a mixed solution and stirred thoroughly; 1moRuCl was weighed 3 ·3H 2 Put O into a beaker, immediately dilute it with ethanol until it is completely dissolved, heat and stir, weigh 3mol of citric acid and dissolve it in ethanol completely, then dissolve RuCl 3 The ethanol solution was dropped into the mixed solution of citric acid and ethanol at a rate of 30 drops / min, stirred thoroughly, and kept at 60° C. for more than 3 hours. The SnO formed above 2 and RuO 2 The solution was mixed according to the required molar ratio (see Table 1), continued to stir for more than 3 hours, and stood for 24 hours. The above coating solution was dried at 80°C and sintered at 400°C for 1 h. The structure size and specific surface area of ​...

Embodiment 2

[0029] Weigh 1mol of SnCl 2 ·2H 2 O was completely dissolved in absolute ethanol, 3 mol of citric acid was weighed and completely dissolved in ethanol, and then SnCl 2 The ethanol solution was added dropwise to the citric acid ethanol solution to form a mixed solution and stirred thoroughly; 1 mol RuCl was weighed 3 ·3H 2 Put O into a beaker, immediately dilute it with an appropriate amount of ethanol until it is completely dissolved, heat and stir, weigh 3 mol of citric acid and dissolve it in ethanol completely, then dissolve the RuCl 3 The ethanol solution was dropped into the mixed solution of citric acid and ethanol at a rate of 30 drops / min, stirred thoroughly, and kept at 60° C. for more than 3 hours. The above is formed into SnO 2 and RuO 2 The solution was mixed according to the required molar ratio (see Table 2), continued stirring for more than 3 hours, and allowed to stand for 24 hours. The above coating solution was dried at 80°C and sintered at 400°C for 1 ...

Embodiment 3

[0033] Weigh 0.5mol of SnCl 2 ·2H 2 O was completely dissolved in absolute ethanol, 1.5mol of citric acid was weighed and completely dissolved in ethanol, and then SnCl 2 The ethanol solution was added dropwise to the citric acid ethanol solution to form a mixed solution and stirred well; 0.5mol of SnCl was weighed 4 ·6H 2 O was completely dissolved in absolute ethanol, 1.5mol of citric acid was weighed and completely dissolved in ethanol, and then SnCl 4 The ethanol solution was added dropwise to the citric acid ethanol solution to form a mixed solution and stirred thoroughly; 1 mol RuCl was weighed 3 ·3H 2 Put O into a beaker, immediately dilute it with an appropriate amount of ethanol until it is completely dissolved, heat and stir, weigh 3 mol of citric acid and dissolve it in ethanol completely, then dissolve the RuCl 3 The ethanol solution was dropped into the mixed solution of citric acid and ethanol at a rate of 30 drops / min, stirred thoroughly, and kept at 60° C....

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Abstract

The invention provides a method for preparing RuO2-SnO2 oxide completely composed of nanoscale rutile phase by using RuCl3, SnCl2 and SnCl4 as precursors. The ratio of RuO2:SnO2 in the titanium anode coating prepared by the invention is 1:4-4 : 1, the surface coating of the titanium substrate is entirely composed of nanoscale rutile phase RuO2-SnO2 oxide or solid solution, and its specific surface area exceeds 460m2·g-1; and the raw materials are easy to obtain and the method is simple.

Description

technical field [0001] The invention belongs to the field of electrochemistry, and more particularly relates to a nano-scale rutile phase RuO 2 -SnO 2 Method for the preparation of oxides. Background technique [0002] Noble metal oxide RuO 2 It is an n-type semiconductor rutile oxide with a rutile structure. It is an important functional material because of its high catalytic activity and corrosion resistance. It has a wide range of uses in the electrochemical industry, chemical industry and electronic industry. Especially the recent nanoscale RuO 2 The increasing demand in high-tech fields has caused its price to rise sharply in the international market. SnO 2 It is an n-type semiconductor rutile oxide with the same structure, and its ionic radius is similar to it, and it has the same structure as RuO. 2 The characteristics of mutual solid solution. plus SnO 2 It is not easy to oxidize, can refine crystal grains, and can improve the stability of active elements, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/457C04B35/624
Inventor 邵艳群唐电王欣张奕义
Owner FUZHOU UNIV
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