Wool keratin-based biologically compatible lead-free nanometer piezoelectric power generation apparatus and preparation method thereof

Abstract

The invention relates to a wool keratin-based biologically compatible lead-free nanometer piezoelectric power generation apparatus and a preparation method thereof. A composite layer which is formed by iron bismuth lanthanum titanate nanofibers and keratin is used as a piezoelectric composite material to be fixed on an indium tin oxide flexible substrate to be used as a lower layer electrode; a piezoelectric composite material upper layer is covered with an indium tin oxide flexible substrate to be used as a top electrode; upper and lower layer electrodes are connected by a copper wire to forman external circuit, wherein the piezoelectric composite material layer enables the iron bismuth lanthanum titanate nanofibers to be dissolved into a wool keratin solution; a little dimethyl fumarateis added to adjust viscosity, and then the indium tin oxide flexible substrate is spin coated with the obtained solution; the second indium tin oxide flexible substrate is fixed on the piezoelectriccomposite material upper layer to form a complete nanometer power generation apparus; and finally polarization is performed on the whole apparatus in the thickness direction. By adopting a biomaterial, the piezoelectric power generation apparatus is high in biological compatibility and bright in prospect in the biomedical field.

Description

technical field

[0001] The invention belongs to the field of new energy development and nano power generation, and relates to a biocompatible lead-free nano piezoelectric power generation device based on wool keratin and a preparation method. Background technique

[0002] With the increasing concern on human health and the urgent desire to prolong lifespan, self-powered systems implanted in the human body play a vital role in biomedical applications. In the past decade, piezoelectric nanogenerators have been widely reported for the transformation of biomechanics and other fields, and their properties of converting mechanical energy into electrical energy make them widely used in implantable medical devices (IMD) to provide effective and sustainable energy.

[0003] At present, researchers have successfully developed piezoelectric nanomaterials with good electrical output performance, such as lead zirconate titanate and barium titanate, because of their good electrical outpu...

Examples

preparation example Construction

[0041] figure 2 Shows a flow chart of a preparation method of a wool keratin-based biocompatible lead-free nano-piezoelectric power generation device according to an embodiment of the present invention, as figure 2 Shown, this preparation method comprises the following steps:

[0042] Step 1, preparing wool keratin solution;

[0043] Step 2, preparing bismuth lanthanum iron titanate nanofibers by electrospinning;

[0044] Step 3, preparing wool keratin-bismuth lanthanum iron titanate piezoelectric composite layer;

[0045] Step 4, spin coating and installing the indium tin oxide electrode; spin coating the wool keratin-bismuth lanthanum iron titanate piezoelectric composite material on the lower indium tin oxide electrode plate at 600-700 rpm for 30-40 seconds;

[0046] Step 5, polyethylene terephthalate substrate; after the piezoelectric composite material is dried, attach the upper layer indium tin oxide electrode plate to the upper surface of the wool keratin-bismuth l...

Embodiment 1

[0061] Such as figure 1 Shown, the present invention provides a kind of bismuth lanthanum based on iron titanate Bi 4 LaTi 3 FeO 15 ) and biocompatible lead-free nanopiezoelectric generators from wool keratin. It includes a piezoelectric composite layer 1, an upper layer of indium tin oxide electrode 2u, a polyethylene terephthalate substrate 2u, a lower layer of indium tin oxide electrode 2d, a polyethylene terephthalate substrate 2d and an external circuit 4, specifically The preparation process is:

[0062] (1) Prepare wool keratin solution

[0063] Step 1, oxidation. Rinse and dry 5g of wool, then oxidize it in 6 wt% potassium monopersulfate complex aqueous solution at 30°C and 200 rpm, and add supersaturated sodium hydroxide solution until the pH of the solution reaches 3.5-5. The oxidized fibers were rinsed with deionized water and filtered four times until the pH of the solution reached 7.

[0064] Step 2, deoxidation. Mix the washed fibers with urea, sodium bis...

Embodiment 2

[0082] Such as figure 1 Shown, the present invention provides a kind of bismuth based on iron titanate Bi 5 Ti 3 FeO 15 and biocompatible lead-free nanopiezoelectric generators from wool keratin. It includes a piezoelectric composite layer 1, an upper layer of indium tin oxide electrode 2u, a polyethylene terephthalate substrate 2u, a lower layer of indium tin oxide electrode 2d, a polyethylene terephthalate substrate 2d and an external circuit 4, specifically The preparation process is:

[0083] (1) Prepare wool keratin solution

[0084] Step 1, oxidation. Rinse and dry 5g of wool, then oxidize it in 6 wt% potassium monopersulfate complex aqueous solution at 30°C and 200 rpm, and add supersaturated sodium hydroxide solution until the pH of the solution reaches 3.5-5. The oxidized fibers were rinsed with deionized water and filtered four times until the pH of the solution reached 7.

[0085] Step 2, deoxidation. Mix the washed fibers with urea, sodium bisulfite and sod...

technical field

[0001] The invention belongs to the field of new energy development and nano power generation, and relates to a biocompatible lead-free nano piezoelectric power generation device based on wool keratin and a preparation method. Background technique

[0002] With the increasing concern on human health and the urgent desire to prolong lifespan, self-powered systems implanted in the human body play a vital role in biomedical applications. In the past decade, piezoelectric nanogenerators have been widely reported for the transformation of biomechanics and other fields, and their properties of converting mechanical energy into electrical energy make them widely used in implantable medical devices (IMD) to provide effective and sustainable energy.

[0003] At present, researchers have successfully developed piezoelectric nanomaterials with good electrical output performance, such as lead zirconate titanate and barium titanate, because of their good electrical outpu...

Examples

preparation example Construction

[0041] figure 2 Shows a flow chart of a preparation method of a wool keratin-based biocompatible lead-free nano-piezoelectric power generation device according to an embodiment of the present invention, as figure 2 Shown, this preparation method comprises the following steps:

[0042] Step 1, preparing wool keratin solution;

[0043] Step 2, preparing bismuth lanthanum iron titanate nanofibers by electrospinning;

[0044] Step 3, preparing wool keratin-bismuth lanthanum iron titanate piezoelectric composite layer;

[0045] Step 4, spin coating and installing the indium tin oxide electrode; spin coating the wool keratin-bismuth lanthanum iron titanate piezoelectric composite material on the lower indium tin oxide electrode plate at 600-700 rpm for 30-40 seconds;

[0046] Step 5, polyethylene terephthalate substrate; after the piezoelectric composite material is dried, attach the upper layer indium tin oxide electrode plate to the upper surface of the wool keratin-bismuth l...

Embodiment 1

[0061] Such as figure 1 Shown, the present invention provides a kind of bismuth lanthanum based on iron titanate Bi 4 LaTi 3 FeO 15 ) and biocompatible lead-free nanopiezoelectric generators from wool keratin. It includes a piezoelectric composite layer 1, an upper layer of indium tin oxide electrode 2u, a polyethylene terephthalate substrate 2u, a lower layer of indium tin oxide electrode 2d, a polyethylene terephthalate substrate 2d and an external circuit 4, specifically The preparation process is:

[0062] (1) Prepare wool keratin solution

[0063] Step 1, oxidation. Rinse and dry 5g of wool, then oxidize it in 6 wt% potassium monopersulfate complex aqueous solution at 30°C and 200 rpm, and add supersaturated sodium hydroxide solution until the pH of the solution reaches 3.5-5. The oxidized fibers were rinsed with deionized water and filtered four times until the pH of the solution reached 7.

[0064] Step 2, deoxidation. Mix the washed fibers with urea, sodium bis...

Embodiment 2

[0082] Such as figure 1 Shown, the present invention provides a kind of bismuth based on iron titanate Bi 5 Ti 3 FeO 15 and biocompatible lead-free nanopiezoelectric generators from wool keratin. It includes a piezoelectric composite layer 1, an upper layer of indium tin oxide electrode 2u, a polyethylene terephthalate substrate 2u, a lower layer of indium tin oxide electrode 2d, a polyethylene terephthalate substrate 2d and an external circuit 4, specifically The preparation process is:

[0083] (1) Prepare wool keratin solution

[0084] Step 1, oxidation. Rinse and dry 5g of wool, then oxidize it in 6 wt% potassium monopersulfate complex aqueous solution at 30°C and 200 rpm, and add supersaturated sodium hydroxide solution until the pH of the solution reaches 3.5-5. The oxidized fibers were rinsed with deionized water and filtered four times until the pH of the solution reached 7.

[0085] Step 2, deoxidation. Mix the washed fibers with urea, sodium bisulfite and sod...

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