Preparation method for metal molybdate micro-nano structure powder

A micro-nano structure, metal molybdate technology, applied in chemical instruments and methods, molybdenum compounds, inorganic chemistry and other directions, can solve the problems of complex process, difficult mass preparation and large-scale production, etc. Good dispersion effect

Pending Publication Date: 2019-03-08
SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method usually faces a series of post-treatment processes such as the removal of surfactants in soft templates or microemulsions. The process is relatively complicated, and it is difficult to prepare in large quantities and produce on a large scale.

Method used

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  • Preparation method for metal molybdate micro-nano structure powder
  • Preparation method for metal molybdate micro-nano structure powder
  • Preparation method for metal molybdate micro-nano structure powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 0.55g of anhydrous calcium chloride in a mixed solution of 70mL N,N-dimethylacetamide (DMAc) and deionized water, and the volume ratio of the two is 1:6, sonicate in an ultrasonic cleaner for 30min, weigh 6.18 g of ammonium heptamolybdate was dissolved in the ultrasonicated solution, and stirred at room temperature until the ammonium heptamolybdate was completely dissolved to obtain a colorless and transparent precursor solution. Pour the above precursor solution into a 100mL reaction kettle, react at 180°C for 30min, wait for the reaction kettle to cool down to room temperature, wash the prepared samples with deionized water and absolute ethanol for 3 times, and then bake at 80°C for 8 ~10h, calcium molybdate powder can be obtained. figure 1 In the X-ray diffraction spectrum of the calcium molybdate powder prepared for this example, all the diffraction peaks are completely consistent with the standard spectrum of calcium molybdate (JCPDS no 29-0351), and no i...

Embodiment 2

[0035]Dissolve 0.63g of strontium nitrate in a mixed solution of 70mL N,N-dimethylacetamide (DMAc) and deionized water, and the volume ratio of the two is 1:4, sonicate in an ultrasonic cleaner for 30min, and weigh 3.70g Ammonium heptamolybdate was dissolved in the ultrasonicated solution and stirred at room temperature until the ammonium heptamolybdate was completely dissolved to obtain a colorless and transparent precursor solution. Pour the above precursor solution into a 100mL reactor and react at 160°C for 16 hours. After the reactor is cooled to room temperature, wash the prepared samples with deionized water and absolute ethanol respectively, and then bake them at 80°C for 8~ After 10 hours, strontium molybdate powder can be obtained. image 3 In the X-ray diffraction spectrum of the strontium molybdate powder prepared for this example, all the diffraction peaks are completely consistent with the standard spectrum of strontium molybdate (JCPDS no 85-0586), and no impuri...

Embodiment 3

[0037] Dissolve 0.50g of barium acetate in a mixed solution of 70mL N-methylacetamide (MAc) and deionized water, and the volume ratio of the two is 1:2, sonicate in an ultrasonic cleaner for 30min, and weigh 2.47g of heptamolybdic acid Ammonium was dissolved in the ultrasonicated solution and stirred at room temperature until the ammonium heptamolybdate was completely dissolved to obtain a milky white precursor solution. Pour the above precursor solution into a 100mL reactor, react at 120°C for 20h, wait until the reactor is cooled to room temperature, wash the prepared samples with deionized water and absolute ethanol three times, and then bake at 80°C for 8~ After 10 hours, barium molybdate powder can be obtained. Figure 5 In the X-ray diffraction spectrum of the barium molybdate powder prepared for this example, all the diffraction peaks are completely consistent with the standard spectrum of barium molybdate (JCPDS no 29-0193), and no impurity peaks are found in the spect...

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Abstract

The invention discloses a preparation method for metal molybdate micro-nano structure powder. The method comprises the following steps that firstly, an amide compound and water are mixed so as to obtain a mixed solvent, and then soluble divalent metal salt is dissolved in the mixed solvent; then sodium molybdate or ammonium heptamolybdate is added under the stirring condition so as to obtain a reaction precursor, and finally the reaction precursor is transferred into a reaction kettle for hydrothermal reaction so as to obtain a precipitate; and the precipitate is washed and dried so as to obtain the metal molybdate micro-nano structure powder with a specific morphology structure, good crystallinity and high purity. The preparation method for the molybdate micro-nano structure powder has the advantages that the raw materials are cheap and easy to obtain, the preparation temperature is low (180 DEG C or below), synthesis equipment is simple, in addition, a surfactant is not required to control the morphology and the structure for a template agent or a microemulsion environment, a preparation process is simple, the cost is low, and large-scale production is easy to realize.

Description

technical field [0001] The invention relates to a method for preparing a metal molybdate micro-nano structure powder, belonging to the technical field of nano-material preparation. Background technique [0002] Metal molybdate is an extremely important inorganic functional material, which has important applications in the fields of photoelectricity, photocatalysis, energy storage, fluorescence (photoluminescence), microwave, optical fiber, scintillator materials, and humidity sensors. where XMoO 4 (X = Ca, Sr, Ba, Co, Mn, Zn, Cd, etc.)) type molybdate materials are the most widely studied and applied. As we all know, the performance of materials depends on the shape, structure and size of materials, etc. Therefore, the preparation of metal molybdate micro-nanostructure materials with specific structures, shapes and sizes has great significance in basic theoretical research and practical development and application of materials. very important. The preparation of metal mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00
CPCC01G39/00C01P2002/72C01P2004/03C01P2004/50C01P2004/61C01P2004/64
Inventor 朱路平毛雨琴陈强李奕怀邴乃慈沈新颖
Owner SHANGHAI SECOND POLYTECHNIC UNIVERSITY
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