Copper nanoparticle solution as well as preparation method and application thereof

A copper nanoparticle and solution technology, applied in the fields of nanotechnology, nano-optics, nanotechnology, etc., can solve the problems of transition metal ion interference, cumbersome synthesis procedures, long response time, etc., to achieve strong selectivity, broad application prospects, reaction short time effect

Pending Publication Date: 2020-09-29
TAIYUAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although there are more and more fluorescent probes used in the detection of silver ions, there are still many shortcomings, such as poor detection limit, cumbersome synthesis procedures, interference from other transition m

Method used

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  • Copper nanoparticle solution as well as preparation method and application thereof
  • Copper nanoparticle solution as well as preparation method and application thereof
  • Copper nanoparticle solution as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0051] Example 1:

[0052] Preparation of copper nanoparticle solution

[0053] Using polyvinylpyrrolidone as the protective agent, 2-mercaptobenzothiazole as the stabilizer, and hydrazine hydrate as the reducing agent, a new method for preparing orange-red fluorescent copper nanoparticles, the reaction diagram is as follows figure 1 Shown:

[0054] (1) Accurately weigh copper chloride and dissolve it in ultrapure water to obtain a concentration of 1.0 mM CuCl 2 Aqueous solution; accurately weigh 2-mercaptobenzothiazole and dissolve it with 1.0M NaOH solution to prepare a 10.0mM 2-mercaptobenzothiazole solution; accurately weigh polyvinylpyrrolidone and dissolve it in ultrapure water to obtain a concentration of 0.07mM Of polyvinylpyrrolidone, pipette 1.0 mL of copper chloride solution, 10.0 mL of polyvinylpyrrolidone solution, and 5.0 mL of 2-mercaptobenzothiazole solution in a clean and dry 25.0 mL colorimetric tube.

[0055] (2) Add 0.4 mL of hydrazine hydrate stock solution to the...

Example Embodiment

[0066] Example 2

[0067] The technical scheme of this embodiment is the same as that of embodiment 1, except that 2.0 mL of polyvinylpyrrolidone solution is added in step (2), and the concentration of polyvinylpyrrolidone in the solution system is adjusted to 5.6 μM.

Example Embodiment

[0068] Example 3

[0069] The technical scheme of this embodiment is the same as that of embodiment 1, except that 6.0 mL of polyvinylpyrrolidone solution is added in step (2), and the concentration of polyvinylpyrrolidone in the solution system is adjusted to 16.8 μM.

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Abstract

The invention discloses copper nanoparticle solution as well as a preparation method and application thereof. The preparation method of the copper nanoparticle solution comprises the following steps that aqueous solutions of copper chloride, 2-mercaptobenzothiazole and polyvinylpyrrolidone are respectively prepared, then the aqueous solutions are mixed and added with hydrazine hydrate, and finallythe solution is stand at 10-20 DEG C to obtain the strong orange fluorescence emission copper nanoparticle solution. The prepared copper nanoparticle solution probe is high in stability, can be usedfor detecting silver ions and is applied to silver ion detection test paper, and detection of the silver ions is visualized. The copper nanoparticle solution can also be used for pattern dyeing and manufacturing.

Description

technical field [0001] The invention relates to the technical field of metal nanoparticles, in particular to a copper nanoparticle solution and its preparation method and application. Background technique [0002] Silver ions are widely used in production, life, medicine and other aspects due to their antibacterial, disinfection and anti-inflammatory properties, such as silver ion washing machines, silver ion refrigerators, etc. However, excessive use of silver ions will cause life-threatening and serious pollution to the human body and the environment. For example: excessive intake and long-term accumulation of silver ions will lead to insoluble deposits in the eyes and skin, and will also inactivate the normal function of thiol enzymes, human anemia, growth retardation, heart enlargement and other degenerative changes, which can also make microorganisms Death by suffocation, toxicity to certain bacteria, viruses, algae and fungi, and pollution of drinking water in the env...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y20/00C09K11/58G01N21/64
CPCB22F9/24C09K11/58B82Y20/00G01N21/6402Y02A50/30
Inventor 李林陈娟杨凡张彩凤
Owner TAIYUAN NORMAL UNIV
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