Silver ion color developing agent and preparation method thereof

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...

AI Technical Summary

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 voltammetry, atomic absorption spectrometry, atomic emission spectrometry, fluorescence method, photometric method, etc., but these methods are often limited by experimental conditions, require large instruments, and the operation is cumbersome, requiring operators to have certain skills. It is difficult to quickly detect on-site