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Method for preparing high-catalytic-activity hierarchical structure silver molybdate

A high catalytic activity, graded technology, applied in chemical instruments and methods, botanical equipment and methods, physical/chemical process catalysts, etc. The effect of good repeatability, long cycle life and broad industrialization prospects

Inactive Publication Date: 2016-07-20
HUAIBEI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent with the application number 2013102615877 discloses a halloysite-based photocatalytic composite material and its preparation method. The preparation process is complex and the repeatability is low, which cannot achieve the purpose of industrial use.

Method used

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  • Method for preparing high-catalytic-activity hierarchical structure silver molybdate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 1mmol of silver acetate, 1g of polyvinylpyrrolidone and 50ml of deionized water into a 100ml beaker, stir for 2 hours at 1000W power and ultrasonic for 1 hour to fully dissolve, add 0.1mol / L ammonium molybdate solution, and react at 30°C for 3 hours, centrifuge until neutral, and dry in an oven at 80°C for 6 hours. Its SEM photos are as figure 1 shown. The product is a butterfly-like structure composed of small particles.

[0017] Put it into 20mg / L methylene blue, and under the excitation of 410nm LED light source, the degradation rate can reach more than 96%.

Embodiment 2

[0019] Weigh 5mmol of silver nitrate, 3g of polyethylene glycol and 50ml of deionized water into a 100ml beaker, stir for 2 hours with 1200W power and ultrasonic for 1 hour to fully dissolve, add 0.5mol / L sodium molybdate solution, heat at 120°C for 4 hours , centrifuged until neutral, and dried in an oven at 60°C for 10 hours.

[0020] Put it into staphylococcus, and under the excitation of 410nm LED light source, the sterilization rate reaches 100%.

Embodiment 3

[0022] Weigh 5mmol of silver nitrate, 2g of ethylenediaminetetraacetic acid and 50ml of deionized water into a 100ml beaker, stir for 0.5 hours and ultrasonically at 1200W for 2 hours to fully dissolve, add 0.5mol / L sodium molybdate solution, at 50°C React for 4 hours, centrifuge until neutral, and dry in an oven at 80°C for 6 hours.

[0023] Putting it into a photo-splitting water hydrogen production reaction device, the quantum efficiency of hydrogen production can reach 2%.

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Abstract

The invention discloses a method for preparing high-catalytic-activity hierarchical structure silver molybdate. Silver salt, surface active agent and molybdate are dissolved in deionized water, stirring and ultrasonic treatment are conducted to achieve sufficient dispersion, and the hierarchical micro-nano-structure silver molybdate is obtained through heating reaction and centrifugation to be used for photo-catalytic degradation of organic pollutants, sterilization and photo-catalytic hydrogen production. According to the synthesis method, operation is easy and quick, raw material cost is low, yield is high, repeatability is high, service life cycle is long, absolutely sustainable development and use are realized, and industrial prospects are broad; the prepared hierarchical micro-nano-structure silver molybdate has high organic pollutant photo-catalytic degradation property, high sterilization property and high photo-catalytic hydrogen production property, and an ideal approach is provided for fundamentally solving the environment and energy problems.

Description

technical field [0001] The invention relates to a method for preparing silver molybdate with a hierarchical structure with high catalytic activity, and belongs to the technical fields of chemical engineering, energy environment and nanometer materials. Background technique [0002] Environment and energy are two major issues facing mankind in the 21st century. As a renewable secondary energy carrier, hydrogen energy has many advantages such as cleanliness, high efficiency, and convenient storage and transportation. It has received great attention from all over the world. From an energy point of view, photocatalytic water splitting to produce hydrogen is the best way for photochemical conversion and storage of solar energy. Photocatalytic technology is a green technology with important application prospects in the fields of energy and environment. The use of photocatalytic purification technology to remove organic pollutants, sterilize and produce hydrogen has the followin...

Claims

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Application Information

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IPC IPC(8): B01J23/68A01N59/16A01P1/00C01G39/00
CPCA01N59/16C01G39/00B01J23/686C01P2004/30C01P2004/03C01P2004/61B01J35/39
Inventor 代凯王中辽吕佳丽梁长浩朱光平李栋佩
Owner HUAIBEI NORMAL UNIVERSITY
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