Gold nanoparticle and preparing method thereof

A technology of gold nanoparticles and chloroauric acid, applied in the direction of nanotechnology, nanotechnology, metal processing equipment, etc., can solve the problems of cumbersome operation, complex structure of modifier, high price, etc., and achieve simple and convenient operation, low cost and high sensitivity high effect
CN108941601AActive Publication Date: 2018-12-07宁波市大学科技园发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
宁波市大学科技园发展有限公司
Publication Date
2018-12-07

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Abstract

The invention discloses a gold nanoparticle and a preparing method thereof. The gold nanoparticle is used for rapidly detecting potassium ions in lake water, tap water, alkaline mineral water, human body blood or urine samples. The method is based on the agglomerate mechanism, amidogen on an organic compound ligand is used for forming strong hydrogen-bond interaction, or through a benzene ring onthe organic compound ligand, a strong pi-pi stacking effect is formed, gold nanoparticle reunion is formed, the solution color is changed, the peak position capable of enabling gold nanoparticle surface plasmas to resonate so as to absorb peaks and absorbing strength are changed, naked eyes and ultraviolet visible spectrophotometry can be directly used for judging, whether K+ ions exist in the samples can be rapidly detected, and rapid detection of K+ ions in the samples can be achieved. The method has the beneficial effects of being easy to operate, low in cost, high in sensitivity, wide in application range and the like.
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Description

technical field

[0001] The invention belongs to the field of nanometer materials, and in particular relates to a gold nanoparticle and a preparation method thereof. Background technique

[0002] Potassium ion is a positive 1-valent ion obtained by losing an electron in the outermost shell of a potassium atom, written as K + . Potassium ions have 8 electrons outside the nucleus to achieve a stable structure. Potassium ions are the main cations in intracellular fluid, and 98% of potassium in the body exists in cells. Under normal circumstances, the potassium content in the daily diet is sufficient to meet the needs of the body, and there will be no potassium deficiency. After potassium is absorbed by the intestines, about 30% is excreted by the kidneys. The kidneys have no restriction on the excretion of potassium. Even if the body is in a state of potassium deficiency, the kidneys continue to excrete potassium. Potassium ions are beneficial to human health, but when the c...

Claims

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