Silver ion color developing agent and preparation method thereof

A chromogenic agent and silver ion technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, instruments, and analysis by making materials undergo chemical reactions, can solve the problems of difficult rapid detection, cumbersome operation, and human hazards. and other problems, to achieve the effect of fast color development, low detection limit and good usability

Active Publication Date: 2016-12-14
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, silver ions have high toxicity to aquatic organisms, can accumulate in the human body, and cause serious harm to the human body, and because silver has a high value, it is necessary to develop a quick and convenient method for on-site detection of silver
[0003] Silver detection methods usually include voltammetr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Nano material silver ion developer BA-SiO described in this embodiment 2 The preparation method specifically comprises the following steps:

[0027] (1) Put nano-silica into ethanol (the liquid-solid ratio of ethanol to silicon dioxide is 20:1), and then add 3-(2,3-glycidoxy)propyltrimethoxysilane, where , the liquid-solid ratio of 3-(2,3-glycidoxypropoxy)propyltrimethoxysilane to silicon dioxide is 1:1, reflux reaction at 65°C, and the obtained product is labeled as GPTMS-SiO 2 .

[0028] (2) Then the obtained GPTMS-SiO 2 Put in ethanol, add polyethyleneimine, polyethyleneimine and GPTMS-SiO 2 The mass ratio of ethanol to silicon dioxide is 1:2, the liquid-solid ratio of ethanol to silicon dioxide is 10:1, and the reflux reaction is carried out at 60°C, and the obtained product is labeled as PEI-SiO 2 .

[0029] (3) Then the obtained PEI-SiO 2 Put in distilled water, then add carbon disulfide and potassium carbonate, carbon disulfide and PEI-SiO 2 The mass ratio...

Embodiment 2

[0036] Nano material silver ion developer BA-SiO described in this embodiment 2 The preparation method specifically comprises the following steps:

[0037] (1) Put nano silicon dioxide into ethanol (the liquid-solid ratio of ethanol to silicon dioxide is 15:1), then add 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 3 The liquid-solid ratio of -(2,3-glycidoxypropoxy)propyltrimethoxysilane to silicon dioxide is 2:1, reflux reaction at 70°C, and the obtained product is labeled as GPTMS-SiO 2 .

[0038] (2) Then the obtained GPTMS-SiO 2 Put in ethanol, add polyethyleneimine, polyethyleneimine and GPTMS-SiO 2 The mass ratio of ethanol to silicon dioxide is 1:1.5, the liquid-solid ratio of ethanol to silicon dioxide is 15:1, and the reaction is refluxed at 65°C, and the obtained product is labeled as PEI-SiO 2 .

[0039] (3) Then the obtained PEI-SiO 2 Put in distilled water, then add carbon disulfide and potassium carbonate, carbon disulfide and PEI-SiO 2 The mass ratio of pot...

Embodiment 3

[0046] Nano material silver ion developer BA-SiO described in this embodiment 2 The preparation method specifically comprises the following steps:

[0047] (1) Put nano silicon dioxide into ethanol (the liquid-solid ratio of ethanol to silicon dioxide is 10:1), then add 3-(2,3-epoxypropoxy)propyltrimethoxysilane, 3 The liquid-solid ratio of -(2,3-glycidyloxypropoxy)propyltrimethoxysilane to silicon dioxide is 3:1, reflux reaction at 75°C, and the obtained product is labeled as GPTMS-SiO 2 .

[0048] (2) Then the obtained GPTMS-SiO 2 Put in ethanol, add polyethyleneimine, polyethyleneimine and GPTMS-SiO 2 The mass ratio of ethanol to silicon dioxide is 1:1, the liquid-solid ratio of ethanol to silicon dioxide is 20:1, and the reaction is refluxed at 70°C, and the obtained product is labeled as PEI-SiO 2 .

[0049] (3) Then the obtained PEI-SiO 2 Put in distilled water, then add carbon disulfide and potassium carbonate, carbon disulfide and PEI-SiO 2 The mass ratio of pot...

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PUM

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Abstract

The invention discloses a silver ion color developing agent and a preparation method thereof, and belongs to the technical field of composite materials. The silver ion color developing agent is prepared by the following steps: adding nano silicon dioxide into ethanol, then adding 3-(2,3-epoxypropoxy)propyl trimethoxysilane, carrying out reflux reactions to obtain a product (GPTMS-SiO2); then adding the obtained GPTMS-SiO2 into ethanol, adding poly(ethylene imine), carrying out reflux reactions to obtain a product (PEI-SiO2); then adding the obtained PEI-SiO2 into distilled water, adding carbon disulfide and potassium carbonate, carrying out reflux reactions at a room temperature to obtain a product (DTC-SiO2), adding the obtained DTC-SiO2 into distilled water, then adding bromoacetic acid and sodium carbonate, and carrying out reflux reactions to obtain a product (BA-SiO2). The prepared silver ion color developing agent has the advantages of fast color developing speed, low detection limit, convenient operation, strong anti-interference performance, and wide pH application range, can be used to detect silver ions in various water bodies, and is suitable for popularization and application.

Description

technical field [0001] The invention relates to a silver ion color developer and a preparation method thereof, belonging to the technical field of composite materials. Background technique [0002] Silver and silver-related products are widely used in the fields of electronics, electroplating, photosensitive materials, chemical industry, environmental monitoring, medicine, aerospace and scientific research, so a large amount of wastewater containing silver ions is produced. However, silver ions have high toxicity to aquatic organisms, can accumulate in the human body, and cause serious harm to the human body, and because silver has a high value, it is necessary to develop a quick and convenient on-site detection method for silver. [0003] The detection methods of silver usually include voltammetry, atomic absorption spectrometry, atomic emission spectrometry, fluorescence method, photometric method, etc., but these methods are often limited by experimental conditions, requi...

Claims

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Application Information

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IPC IPC(8): G01N21/78C08G77/14
CPCC08G77/14G01N21/78G01N2021/775
Inventor 张利波张耕玮王仕兴崔维付立康廖雪峰
Owner KUNMING UNIV OF SCI & TECH
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