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Cellulose/black phosphorus nanosheet composite hydrogel and preparation method thereof

A technology of composite hydrogel and cellulose, applied in the field of cellulose/black phosphorus nanosheet composite hydrogel and its preparation, can solve the problems of difficult processing and molding, insoluble and infusible cellulose, and restricting the development of cellulose, etc. Achieve complete biocompatibility, good mechanical strength, complete biodegradability

Active Publication Date: 2018-04-20
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Cellulose is the most abundant renewable resource on earth and has the advantages of complete biocompatibility and complete biodegradability. It is difficult to process and shape, which greatly limits the development of cellulose in biomedical materials

Method used

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  • Cellulose/black phosphorus nanosheet composite hydrogel and preparation method thereof
  • Cellulose/black phosphorus nanosheet composite hydrogel and preparation method thereof
  • Cellulose/black phosphorus nanosheet composite hydrogel and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0070] A kind of preparation of cellulose / black phosphorus nanosheet composite hydrogel, comprising:

[0071] Step (1). The black phosphorus nanosheet solid with uniform size is prepared by liquid phase stripping method, and its specific steps are as follows:

[0072] 1-a): block black phosphorus and N-methylpyrrolidone (NMP) were added into an agate mortar for 30 minutes according to the solid content ratio of 500 mg / 10 mL; after grinding, the black phosphorus / N- The complex of methylpyrrolidone (NMP) was moved to a 100mL reaction bottle, and 90mL of NMP was added to obtain a dispersion. The final solid content of black phosphorus in the total NMP was 5mg / mL.

[0073] 1-b): The above-mentioned dispersion liquid is subjected to probe ultrasonication, the ultrasonic power is 600W, and the time is 50 hours, to obtain a solution containing black phosphorus nanosheets, which is ready for use.

[0074] 1-c): centrifuging the above-mentioned black phosphorus nanosheet solution at a...

Embodiment 2

[0087] The difference between the preparation of cellulose / black phosphorus nanosheet composite hydrogel and Example 1 is that in step 3-a), the mass ratio of cellulose to black phosphorus nanosheet solid is 100:0.01.

Embodiment 3

[0089] The difference between the preparation of cellulose / black phosphorus nanosheet composite hydrogel and Example 1 is that in step 3-a), the mass ratio of cellulose to black phosphorus nanosheet solid is 100:0.03.

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Abstract

The invention provides a cellulose / black phosphorus nanosheet composite hydrogel. The composite hydrogel comprises a cellulose three-dimensional network structure and black phosphorus nanosheets loaded in the cellulose three-dimensional network structure. The black phosphorus nanosheets can be stably loaded in the composite hydrogel system, and are not prone to agglomerate, and the composite hydrogel has the advantages of uniform, stable and high photothermal conversion efficiency, good compatibility with biological fluids, complete biodegradability and high biosafety, and can be used in biomedical field. The invention also provides a preparation method of the composite hydrogel.

Description

technical field [0001] The invention belongs to the field of preparation of black phosphorus-based nanomaterials, and in particular relates to a cellulose / black phosphorus nanosheet composite hydrogel and a preparation method thereof. Background technique [0002] Black phosphorus (Black phosphorene) is a new type of direct bandgap two-dimensional material, its bandgap can be adjusted from 0.3eV (bulk state) to 1.5eV (single layer) through its number of layers, it can absorb from visible light to infrared for communication Light with a wide range of wavelengths, coupled with its high carrier mobility, high on-off ratio, and good photothermal conversion effect and biocompatibility, make it show great potential in the fields of semiconductors, optoelectronics, and biology. potential advantage. [0003] In the field of biomedicine, black phosphorus, an inorganic nanomaterial, has insufficient dispersibility in biological fluids and is prone to sedimentation. There are obvious ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08L1/02C08K7/00C08K3/02C08B15/10
CPCC08B15/10C08J3/075C08J2301/02C08K7/00C08K2003/026C08K2201/011
Inventor 张晗邢晨阳陈世优
Owner SHENZHEN UNIV
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