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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 phase precipitation method, hydrothermal method, microwave method etc. is that the existence of additive is arranged or reaction time is longer (up to hours or even days)

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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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Effect test

Embodiment 1

[0036] A kind of method utilizing cationic membrane electrolysis to prepare silver molybdate, specifically comprises the steps:

[0037] (1) Use silver sheet as anode, inert electrode as cathode, 95ml aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml acid solution as catholyte, double-chamber electrolysis with cationic membrane as diaphragm In the tank, adopt the method of constant voltage electrolysis, control the temperature range from room temperature to 50°C, and constant voltage electrolyze the aqueous solution containing depolarizer and sodium molybdate for 20 minutes;

[0038] The inert electrode is a titanium mesh;

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

[0040] Described acid solution is the aqueous hydrochloric acid solution that concentration is 0.1mol / L;

[0041] Th...

Embodiment 2

[0047] A kind of method utilizing cationic membrane electrolysis to prepare silver molybdate, concrete steps are as follows:

[0048] (1) Use silver sheet as anode, inert electrode as cathode, 95ml aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml acid solution as catholyte, double-chamber electrolysis with cationic membrane as diaphragm In the tank, adopt the method of constant current electrolysis, and control the temperature range 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 depolarizer and sodium molybdate, the concentration of sodium molybdate is 0.1mol / L, the concentration of depolarizer is 0.01mol / L, and the depolarizer is nitric acid;

[0051] Described acid solution is the aqueous hydrochloric acid solution that concentration is 0.1mol / L;

[0052] The cationic membrane ...

Embodiment 3

[0058] A kind of method utilizing cationic membrane electrolysis to prepare silver molybdate, specifically comprises the steps:

[0059] (1) Use silver sheet as anode, inert electrode as cathode, 95ml aqueous solution containing depolarizer and sodium molybdate as anolyte, 90ml alkali solution as catholyte, double-chamber electrolysis with cationic membrane as diaphragm In the tank, adopt the method of constant current electrolysis, and control the temperature range from room temperature to 50°C to electrolyze the aqueous solution containing depolarizer and sodium molybdate for 20 minutes;

[0060] The inert electrode is a titanium mesh;

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

[0062] Described alkali solution is the sodium hydroxide aqueous solution that concentration is 0.1mol / L;

[0063] The cationi...

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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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