Aminated mesoporous silica-glucose-manganese dioxide nanocomposite material and its preparation method and application

A nanocomposite material and aminated mesoporous technology, applied in the field of nanomaterials, can solve the problems of complex design of the sensing system and poor practicability of the sensing system, and achieve the effects of high sensitivity, reliable quantitative results and low detection lines.

Inactive Publication Date: 2018-10-02
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There are two problems in the current sensing system, one is that the design of the sensing system is complicated, and the other is that the sensing system is not practical

Method used

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  • Aminated mesoporous silica-glucose-manganese dioxide nanocomposite material and its preparation method and application
  • Aminated mesoporous silica-glucose-manganese dioxide nanocomposite material and its preparation method and application
  • Aminated mesoporous silica-glucose-manganese dioxide nanocomposite material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0037]Dissolve 0.5g of CTAB in 200mL of distilled water, add 1.75mL of 2.0M NaOH aqueous solution into the CTAB solution at 80°C, stir for 20 minutes, then drop 2.5mL of TEOS into it and stir for 2 hours, the product Filtered, washed with distilled water and methanol, and dried to obtain mesoporous SiO 2 (MSN).

[0038] MSN was refluxed in a solution consisting of HCl (37%, 1.5 mL) and methanol (75 mL) for 10 hours, then washed with distilled water and methanol, and dried under vacuum at 60 °C for 4 hours to remove excess CTAB, and the resulting 0.5 g MSN was dispersed in 10 mL of ethanol, and 500 μL of APTES was added thereto, and after stirring for 6 hours, the suspension was centrifuged and washed repeatedly with ethanol four times to obtain aminated MSN. The resulting aminated MSN is subjected to high-magnification transmission electron microscope detection, such as figure 2 shown.

Embodiment 2

[0040] In a 50mL round bottom flask, within 15 seconds, 5mL of 0.3M MnCl 2 4H 2 O aqueous solution was mixed with 10 mL of 0.6 M tetramethylammonium hydroxide aqueous solution containing 3 wt % hydrogen peroxide, and the resulting mixture was stirred in air at room temperature for 12 hours, washed with deionized water and methanol, and dried at 50 °C. Disperse the dried resulting powder in water and sonicate for 10 h until a brown colloid is formed to obtain a concentration of 80 ug / mL of MnO 2 Nanosheets. Will get MnO 2 Nanosheets are subjected to high-magnification transmission electron microscopy, such as image 3 shown.

Embodiment 3

[0042] Disperse 5 mg of aminated MSN into 500 μL of 2.0 M glucose, shake the resulting mixture at room temperature for 16 h, and add 1 mL of MnO to the resulting suspension 2 nanosheets, the mixture was stirred at 4 °C for 8 hours, centrifuged, and washed with distilled water to obtain glucose-loaded MnO 2 End-capped MSN, SiO of the present invention 2 -Glucose-MnO 2 Nanocomposite material, the obtained nanocomposite material is subjected to high-magnification transmission electron microscopy detection, such as Figure 4 shown.

[0043] Glucose-loaded MnO 2 The capped MSN was dispersed in distilled water at a concentration of 20 mg / mL to form MnO at a concentration of 20 mg / mL 2 Blocked MSN in water.

[0044] To 50 μL of GSH aqueous solution of different concentrations (2 μM, 4 μM, 6 μM, 8 μM, 10 μM, 20 μM, 40 μM, 60 μM, 80 μM, 100 μM), add 100 μL of the above concentration of 20 mg / mL MnO 2 capped MSN in water. Incubate at room temperature for 10 minutes, shake the sam...

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Abstract

The invention belongs to the technical field of nano materials and particularly relates to aminated mesoporous silica-glucose-manganese dioxide nanocomposite and a preparation method and application thereof. The nanocomposite is prepared from manganese dioxide nanosheet and aminated mesoporous SiO2 nanosphere containing glucose, wherein the surface of the aminated mesoporous SiO2 nanosphere is coated by the manganese dioxide nanosheet, the particle size of the aminated mesoporous SiO2 nanosphere is 40 to 60nm, and the hole diameter is 2 to 3nm. The preparation method of the aminated mesoporous silica-glucose-manganese dioxide nanocomposite comprises the steps of preparing aminated mesoporous SiO2 and MnO2 nanosheet, then dispersing the aminated mesoporous SiO2 into a glucose water solution and finally connecting the MnO2 nanosheet to the surface of aminated MSN. According to the aminated mesoporous silica-glucose-manganese dioxide nanocomposite and the preparation method and application thereof, PGM is utilized to detect; thus, the content of GSH in a sample of the aminated mesoporous silica-glucose-manganese dioxide nanocomposite can be quantitatively detected, a detection line is low, and flexibility is high.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to an aminated mesoporous silicon dioxide-glucose-manganese dioxide nanocomposite material and its preparation method and application. Background technique [0002] Nanocomposite materials are new materials obtained by coupling or synergistically recombining two or more substances with completely different physical and chemical properties. In addition to the properties of its own parts, the properties it exhibits can also exhibit many novel properties, breaking through the limitations of the performance of a single component. Nanocomposites have significant application prospects in the research and development of new functional materials, biomedicine, environmental protection and pollution control. [0003] Mesoporous SiO 2 With good biocompatibility and excellent chemical inertness, it has been widely used in biomedical engineering, electronics, and catalytic en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/68B82Y30/00
CPCB82Y30/00G01N33/68
Inventor 渠凤丽谭青青裴海盟
Owner QUFU NORMAL UNIV
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