Method for preparing silver molybdate with cationic membrane electrolysis method

A cationic membrane, silver molybdate technology, applied in the electrolysis process, electrolysis components and other directions, can solve the problems of long (up to several hours or even days, the reaction time of additives, etc., to achieve short reaction time, reduced preparation cost, easy effect of operation

Inactive Publication Date: 2015-07-22
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the solid-state synthesis method has a lot of metal oxide impurities because the raw material mixing cloth is uniform; The shortcoming of sol-gel method, aqueous ph

Method used

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  • Method for preparing silver molybdate with cationic membrane electrolysis method
  • Method for preparing silver molybdate with cationic membrane electrolysis method
  • Method for preparing silver molybdate with cationic membrane electrolysis method

Examples

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Example Embodiment

[0035] Example 1

[0036] A method for preparing silver molybdate by cationic membrane electrolysis method specifically includes the following steps:

[0037] (1) Using silver flake as anode, inert electrode as cathode, 95ml of aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml of acid solution as catholyte, electrolysis in a double-chamber with cation membrane as diaphragm In the tank, the constant pressure electrolysis method is adopted, and the control temperature range is from room temperature to 50° C. The constant pressure electrolysis of the aqueous solution containing the depolarizer and sodium molybdate is 20 minutes;

[0038] The inert electrode is a titanium mesh;

[0039] In the aqueous solution containing a depolarizing agent and sodium molybdate, the concentration of sodium molybdate is 0.1 mol / L, the concentration of the depolarizing agent is 0.01 mol / L, and the depolarizing agent is nitric acid;

[0040] The acid solution is an aqueous hydr...

Example Embodiment

[0046] Example 2

[0047] A method for preparing silver molybdate by cationic membrane electrolysis, the specific steps are as follows:

[0048] (1) Using silver flake as anode, inert electrode as cathode, 95ml of aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml of acid solution as catholyte, electrolysis in a double-chamber with cation membrane as diaphragm In the tank, the constant current electrolysis method is adopted, and the temperature range is controlled from room temperature to 50°C to electrolyze the aqueous solution containing depolarizer and sodium molybdate for 20 minutes;

[0049] The inert electrode is a titanium mesh;

[0050] In the aqueous solution containing the depolarizing agent and sodium molybdate, the concentration of sodium molybdate is 0.1 mol / L, the concentration of the depolarizing agent is 0.01 mol / L, and the depolarizing agent is nitric acid;

[0051] The acid solution is an aqueous hydrochloric acid solution with a concentr...

Example Embodiment

[0057] Example 3

[0058] A method for preparing silver molybdate by cationic membrane electrolysis method specifically includes the following steps:

[0059] (1) Using silver flake as anode, inert electrode as cathode, 95ml of aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml of alkaline solution as catholyte, electrolysis in a double chamber with cation membrane as diaphragm In the tank, the constant current electrolysis method is adopted, and the temperature range is controlled from room temperature to 50°C to electrolyze the aqueous solution containing the depolarizer and sodium molybdate for 20 minutes;

[0060] The inert electrode is a titanium mesh;

[0061] In the aqueous solution containing depolarizing agent and sodium molybdate, the concentration of sodium molybdate is 0.1 mol / L, the concentration of depolarizing agent is 0.01 mol / L, and the depolarizing agent is sodium nitrate;

[0062] The alkali solution is an aqueous sodium hydroxide soluti...

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Abstract

The invention discloses a method for preparing silver molybdate with a cationic membrane electrolysis method. A silver sheet is taken as an anode, an inert electrode is taken as a cathode, an aqueous solution containing a depolarizer and sodium molybdate is taken as an anolyte, an acid solution, an alkaline solution or a salt solution is taken as a catholyte, and the aqueous solution containing the depolarizer and the sodium molybdate is electrolyzed in a double-chamber electrolytic cell with a cationic membrane serving as a diaphragm at the room temperature of 90 DEG C in a constant-current electrolysis or constant-voltage electrolysis manner until all Na<+> ions are transferred to a cathode chamber; a product obtained in an anode chamber is washed and filtered with deionized water, an obtained filter cake is dried at the temperature of 100-200 DEG C for 1-2 h, and the silver molybdate which is high in purity and free of impurity phases is obtained. According to the method, the effect of cationic membrane electrolysis is used, the Na<+> ions are transferred to the cathode chamber, the effect caused by the Na<+> ions is eliminated, the reaction time is short, and the finally obtained silver molybdate product is high in purity and free of the impurity phases.

Description

technical field [0001] The invention relates to a method for preparing silver molybdate by cationic membrane electrolysis, which belongs to the field of inorganic materials. technical background [0002] As a member of the metal molybdate system of functional materials, silver molybdate is used in important fields such as biology, medicine, catalysis, and environmental protection because it contains special functional transition metals and has a unique crystal structure. [0003] At present, antibacterial agents (also known as antibacterial materials) can be divided into three types of materials, organic antibacterial agents, inorganic antibacterial agents, and natural antibacterial agents. Inorganic antibacterial agents include activated carbon, silver-loaded, copper-loaded, zinc-loaded inorganic compounds, silver-loaded ceramics, etc. Among all metal ions, silver ions have the highest bactericidal activity and can kill 650 kinds of bacteria, viruses and fungi. In recent y...

Claims

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Application Information

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IPC IPC(8): C25B1/00
CPCC25B1/00
Inventor 张全生闵凡奇李细方李硕王淼党国举王昭勍李海燕贾李李
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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