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Modified SBA-15 mesoporous material as well as preparation method and application thereof

A mesoporous material and modification technology, applied in the field of modified SBA-15 mesoporous material and its preparation, to achieve the effects of efficient detection and removal, high sensitivity, and improved probe selectivity and sensitivity

Inactive Publication Date: 2015-07-01
HUAIYIN TEACHERS COLLEGE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the mesoporous materials reported in the literature can only realize part of the process of processing heavy metal ions due to the limitation of functional groups.

Method used

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  • Modified SBA-15 mesoporous material as well as preparation method and application thereof
  • Modified SBA-15 mesoporous material as well as preparation method and application thereof
  • Modified SBA-15 mesoporous material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as image 3 Shown, a kind of method for preparing modified SBA-15 mesoporous material, comprises the following steps successively:

[0043] Step 1: Preparation of rhodamine B hydrazide: Dissolve 0.8g of rhodamine B in 20ml of ethanol, stir vigorously under greenhouse conditions, and at the same time add 2.0ml of hydrazine hydrate drop by drop, prepare a reaction solution after the addition, reflux for 4h, and react The color of the liquid changes from deep purple to pale orange to finally colorless and transparent, the reaction solution is cooled, the solvent ethanol in the reaction solution is removed by distillation under reduced pressure, and 40 ml of hydrochloric acid is added to the remaining solid to obtain a transparent For the red solution, slowly add NaOH with a concentration of 1 mol / L dropwise under stirring until the pH of the solution reaches 9-10, filter the precipitate, and wash with water three times, taking 10ml of water each time, and carry out in...

Embodiment 2

[0052] Such as image 3 Shown, a kind of method for preparing modified SBA-15 mesoporous material, comprises the following steps successively:

[0053] Step 1: Preparation of rhodamine B hydrazide: Dissolve 1.20g of rhodamine B in 30ml of ethanol, stir vigorously under greenhouse conditions, and at the same time add 3.0ml of hydrazine hydrate dropwise, prepare a reaction solution after the addition, reflux for 6h, and react The color of the liquid changes from deep purple to light orange to finally colorless and transparent, the reaction solution is cooled, the solvent ethanol in the reaction solution is removed by distillation under reduced pressure, and 50 ml of hydrochloric acid is added to the remaining solid to obtain a transparent For the red solution, slowly add NaOH with a concentration of 1 mol / L dropwise under stirring until the pH of the solution reaches 9-10, filter the precipitate, and wash with water three times, taking 15ml of water each time, and drying by infr...

Embodiment 3

[0062] like image 3 Shown, a kind of method for preparing modified SBA-15 mesoporous material, comprises the following steps successively:

[0063] Step 1: Preparation of rhodamine B hydrazide: Dissolve 2.0 g of rhodamine B in 35 ml of ethanol, stir vigorously under greenhouse conditions, and at the same time add 5.0 ml of hydrazine hydrate drop by drop, prepare a reaction solution after the addition, reflux for 8 hours, and react The color of the liquid changes from deep purple to light orange to finally colorless and transparent, the reaction solution is cooled, the solvent ethanol in the reaction solution is removed by distillation under reduced pressure, and 60ml of hydrochloric acid is added to the remaining solid to obtain a transparent For the red solution, slowly add NaOH with a concentration of 1 mol / L dropwise under stirring until the pH of the solution reaches 9-10, filter the precipitate, and wash with water three times, taking 20ml of water each time, and carry o...

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Abstract

The invention belongs to the technical field of a functional material, and in particular relates to a modified SBA-15 mesoporous material as well as a preparation method and an application thereof. The mesoporous material is an SBA-15 mesoporous material modified by trimethoxy-[(3-ethylene oxide methox)yl propyl] silane and rhodamine B derivative, and the modified mesoporous material is prepared by the following steps: firstly, substituting silicon hydroxyl of an SBA-15 mesoporous material which is prepared in advance with a substitute (as shown in Specification), and then, carrying out a cycloaddition reaction with thio rhodamine B hydrazide (as shown in Specification), so as to obtain the modified SBA-15 mesoporous material with chemical structural formula as shown in Specification. The modified SBA-15 mesoporous material, as a hybridized mesoporous fluorescent adsorbent showing efficient detection and a capacity of removing mercury ions in a water body and integrating multiple functions, can simultaneously carry out detection and recovery processes on dangerous chemical substances in a water solution, an air system, and in particular in body blood or tissue.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a modified SBA-15 mesoporous material and its preparation method and application. Background technique [0002] Heavy metal ions are very harmful pollutants to the environment, because they are widely distributed in air, water and soil, and are very harmful to human health. Among these ions, Hg 2+ Considered one of the most dangerous, it can accumulate in the human body and cause a series of symptoms such as: headache, edema, anemia, even low concentrations can be harmful, especially for the growth of children, therefore, developing sensitivity and selective detection of Hg 2+ Analytical methods have aroused widespread interest, but many technical methods are time-consuming, costly to operate, and require bulky instrumentation. Therefore, in many important applications, there is an urgent need for a fast, accurate, low-cost and selective method for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F1/62
Inventor 黄进徐继明黄辉
Owner HUAIYIN TEACHERS COLLEGE
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