A Chromogenic Method for Inorganic Spherical Nanoparticle Aggregates
A technology of nanoparticles and aggregates, which is applied in the measurement of color/spectral properties, etc., to achieve the effect of simple operation process, scientific design and environmental friendliness
Active Publication Date: 2016-01-13
QINGDAO UNIV
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At present, there are no devices and methods related to color development of nanomaterials in the prior art. Therefore, the present invention researches and designs a method that can make nanomaterials display color, so as to facilitate people's observation and research, which has important scientific research significance and application value
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Embodiment 1
[0018] The inorganic spherical nanoparticle aggregates involved in this embodiment take silica microsphere blocks as an example, and the color development method of the spherical nanoparticle aggregates specifically includes the following steps:
[0019] (1) Preparation of liquid carbon sol: Weigh furfural, resorcinol, cetyltrimethylammonium bromide and hexamethylenetetramine according to the molar ratio of 100:200:1:1 and mix Finally, add it to absolute ethanol, stir it with a magnetic machine for 15 minutes at 20-25° C. to form a mixed solution with a concentration of 23 wt % (percentage by weight), put the mixed solution into a water bath at 50° C., and heat it at 300 RPM After the reaction is stirred and reacted until the color of the liquid turns black completely, the reaction is terminated, and the carbon sol is prepared for subsequent use;
[0020] (2) filling carbon sol to cause color reaction: get 10ml mass fraction respectively and be the suspension of the silica mic...
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The invention relates to a color developing method for inorganic spherical nano-particle aggregate, which belongs to the technical field of nanophotonic developing. According to the invention, nanometer spherical particles with different sizes are used as raw materials; through filling of a carbon material with high absorbance, diffuse reflection light intensities of the nanometer particles are reduced, so difference among light intensities of reflected light with different wavelengths is increased and the nano-particle aggregate can display different colors. The method comprises the following concrete steps: preparation of liquid carbon sol; filling of the carbon sol to incur developing effect; and developing effect caused by porous carbon. A developed material has the advantages of no fading, no color changing, convenience in observation, etc. The method has the advantages of scientific design, reliable principles, usage of simple reagents, easy and convenient operation process, easy controllability of conditions and environment friendliness.
Description
Technical field: [0001] The invention belongs to the technical field of nanophotonics color development, and relates to a color development method for aggregates of inorganic spherical nanoparticles. Nano spherical particles of different sizes are used as raw materials, and carbon materials with strong absorbance are filled to reduce the dispersion of nanoparticles. The reflected light intensity increases the relative difference of light intensity of different wavelengths in the reflected light, so that the nanoparticle aggregates display different colors. Background technique: [0002] In physics, when a beam of light passes through a colloid, a bright "path" in the colloid can be observed from the vertical direction of the incident light. This phenomenon is called the Tyndall phenomenon, and this bright "path" is It is caused by the scattering of light by colloidal particles; according to the Mie scattering theory, when the diameter d of spherical colloidal particles is eq...
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IPC IPC(8): G01N21/25
Inventor 李延强李勤赵修松
Owner QINGDAO UNIV