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Synthetic method for three-dimensional structure assembled by La surface-modified ZnO nanosheets

A surface modification, three-dimensional structure technology, applied in the field of nanomaterials, can solve the problems of limiting the application and promotion of La-modified ZnO photocatalysts, and achieve the effects of improving the photocatalytic effect, large size and simple process

Active Publication Date: 2015-06-03
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods involve expensive equipment, strict experimental environment, or complicated experimental processes, which limit the application and promotion of La modified ZnO photocatalysts.
So far, there is no report on the 3D structure assembled by La surface-modified ZnO nanosheets for photocatalytic degradation of dyes

Method used

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  • Synthetic method for three-dimensional structure assembled by La surface-modified ZnO nanosheets
  • Synthetic method for three-dimensional structure assembled by La surface-modified ZnO nanosheets
  • Synthetic method for three-dimensional structure assembled by La surface-modified ZnO nanosheets

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add a volume of 10 mL of zinc nitrate solution (0.5 mol / L) into a 100 mL beaker, magnetically stir and ice-bath, and another volume of 10 mL of sodium hydroxide solution (3.0 mol / L), put it in a separatory funnel, pass Add the sodium hydroxide solution to the zinc nitrate solution drop by drop using a separatory funnel. Subsequently, 1.0 mL of sodium lauryl sulfate solution (0.2 mol / L) and a certain volume of distilled water were added to obtain a mixed solution with a volume of 50 mL. Remove the ice bath, continue to stir vigorously at room temperature for 1.5 h, and stand still to obtain a precursor solution. The precursor solution was transferred to an Erlenmeyer flask with a ground glass stopper, and the Erlenmeyer flask was placed in a constant temperature water bath for 5 hours at 70°C to obtain a white precipitate. The white precipitate was separated by suction filtration, washed with distilled water and ethanol, and dried in a constant temperature blast drying ...

Embodiment 2

[0033]Add 10 mL of zinc nitrate solution (1.0 mol / L) into a 100 mL beaker, stir magnetically and in an ice bath, and take another 10 mL of sodium hydroxide solution (4.0 mol / L), put it in a separatory funnel, and pass Add the sodium hydroxide solution to the zinc nitrate solution drop by drop using a separatory funnel. Then 2.5 mL of sodium dodecyl sulfate solution (0.2 mol / L) and a certain volume of distilled water were added to obtain a mixed solution with a volume of 50 mL. Remove the ice bath, continue to stir vigorously at room temperature for 1.5 h, and stand still to obtain a precursor solution. The precursor solution was transferred to an Erlenmeyer flask with a ground glass stopper, and the Erlenmeyer flask was placed in a constant temperature water bath for 5 hours at 80°C to obtain a white precipitate. The white precipitate was separated by suction filtration, washed with distilled water and ethanol, and dried in a 70°C constant temperature blast drying oven. Afte...

Embodiment 3

[0035] Add 10 mL of zinc nitrate solution (1.5 mol / L) into a 100 mL beaker, stir magnetically and in an ice bath, and take another 10 mL of sodium hydroxide solution (5.0 mol / L), put it in a separatory funnel, and pass Add the sodium hydroxide solution to the zinc nitrate solution drop by drop using a separatory funnel. Subsequently, 5.0 mL of sodium lauryl sulfate solution (0.2 mol / L) and a certain volume of distilled water were added to obtain a mixed solution with a volume of 50 mL. Remove the ice bath, continue to stir vigorously at room temperature for 1.5 h, and stand still to obtain a precursor solution. The precursor solution was transferred to an Erlenmeyer flask with a ground glass stopper, and the Erlenmeyer flask was placed in a constant temperature water bath for 5 hours at 85°C to obtain a white precipitate. The white precipitate was separated by suction filtration, washed with distilled water and ethanol, and dried in a constant temperature blast drying oven at...

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Abstract

The invention relates to a synthetic method for a three-dimensional structure assembled by La surface-modified ZnO nanosheets, and belongs to the technical field of micro-nano material preparation. The synthetic method comprises the following steps: under an ice bath stirring condition, adding sodium hydroxide, a surfactant and distilled water into a zinc nitrate solution to obtain a mixed solution, continuously stirring the mixed solution at the room temperature, and standing to obtain a precursor solution; performing water-bath reaction on the precursor solution to obtain white precipitate ZnO, washing the white precipitate ZnO with distilled water and alcohol, and drying for later use; mixing ZnO with a lanthanum nitrate solution, stirring and ultrasonically processing, filtering and drying the precipitate to obtain La-loaded ZnO; and roasting the La-loaded ZnO, and cooling to the room temperature to obtain the three-dimensional structure assembled by La surface-modified ZnO nanosheets. The synthetic method is simple in process, economical, and easy to operate, and the prepared nanosheet assembly is large in size and high in specific surface area, and has application potential in photocatalytic degradation of organic pollutants, gas-sensitive performances, and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for synthesizing a three-dimensional structure assembled by La surface-modified ZnO nanosheets. Background technique [0002] The technical development of functional materials has prompted the research in the field of materials chemistry to develop in the direction of designing nanomaterials with controlled morphology and composition. Among them, structure plays a central role in the field of chemistry and materials science. In particular, the preparation of inorganic nanostructured materials with precise sizes, shapes, and dimensions has rapidly advanced our understanding of the dependence of material properties on structure and size. Among nanostructures with different morphologies, due to their unique structural factors such as thinner thickness and higher specific surface area, nanosheets can not only assemble diverse structures, but also fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
Inventor 孙彦刚张文龙丁德润蔡丽媛赛明泽唐阳
Owner SHANGHAI UNIV OF ENG SCI
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