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Self-energized photovoltage aptamer sensor based on sulfur vacancy and preparation method and application of self-energized photovoltage aptamer sensor

A technology of voltage adaptation and self-supply, applied in photovoltaic power generation, instruments, scientific instruments, etc., can solve the problems of high professionalism in instrument operation, difficulty in large-scale on-site detection, complex and time-consuming processing, etc., and achieve good reproducibility , convenient quantitative detection, wide linear range effect

Pending Publication Date: 2022-05-24
CHANGZHOU UNIV
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Problems solved by technology

However, most of the existing instrumental analysis methods have limitations, such as high price, high professionalism in instrument operation, complex and time-consuming pretreatment process, and difficulty in large-scale on-site detection

Method used

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  • Self-energized photovoltage aptamer sensor based on sulfur vacancy and preparation method and application of self-energized photovoltage aptamer sensor
  • Self-energized photovoltage aptamer sensor based on sulfur vacancy and preparation method and application of self-energized photovoltage aptamer sensor
  • Self-energized photovoltage aptamer sensor based on sulfur vacancy and preparation method and application of self-energized photovoltage aptamer sensor

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Experimental program
Comparison scheme
Effect test

Embodiment

[0033] (1), Bi 2 S 3-X / Ti 3 C 2 Preparation of:

[0034] Under stirring conditions, 538 mg of bismuth nitrate was dissolved in 50 mL of dilute nitric acid (0.5 M), and then the solution was slowly poured into 30 mL of titanium carbide dispersion (0.5 mg / mL), and sonicated uniformly. At the same time, 398.7 mg of sodium sulfide was dissolved in 50 mL of water, fully dissolved, and slowly added to the above ultrasonically homogeneous solution. The resulting brown-black precipitate was washed several times with water, and the Bi was obtained by freeze-drying. 2 S 3-X / Ti 3 C 2 Nanocomposites, as photoanodes;

[0035] (2), the preparation of CuO:

[0036] Dissolve 670 mg of cupric chloride in 20 mL of deionized water, then adjust the pH to above 10 with 0.1 M sodium hydroxide solution with constant stirring. The mixed solution was transferred to a Teflon-lined stainless steel reactor for hydrothermal reaction at 150 degrees Celsius for 12 hours. After natural cooling, ...

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Abstract

The invention relates to the technical field of photoelectric materials and photovoltage detection, in particular to a self-powered photovoltage aptamer sensor based on sulfur vacancy and a preparation method and application thereof. A nano composite material Bi2S3-X / Ti3C2 with a sulfur vacancy is modified on the surface of an ITO (Indium Tin Oxide) electrode to serve as a photo-anode. And modifying the surface of the ITO electrode with CuO subjected to hydro-thermal synthesis, modifying a layer of chitosan film-forming agent, and loading an aptamer of a to-be-detected object to serve as a photocathode. And finally, connecting the photoanode with the photocathode to construct the self-energized photovoltage aptamer sensor based on the sulfur vacancy. The microcystin-RR is detected based on the self-powered photovoltage aptamer sensor, the detection range can be 10 <-16 > to 10 <-11 > nmol / L, and the lowest detection limit is 4.7 * 10 <-17 > mol / L. The method for detecting the microcystin-RR is simple to operate, good in selectivity, low in detection cost and high in sensitivity.

Description

technical field [0001] The invention relates to the technical field of optoelectronic materials and photovoltage detection, in particular to a self-powered photovoltage aptamer sensor based on sulfur vacancies and a preparation method and application thereof, in particular to a photocathode using Apt / CTS / CuO / ITO as a photocathode , with Bi 2 S 3-X / Ti 3 C 2 / ITO is a photoanode, a photovoltage analysis method for quantitative detection of microcystin-RR in river water. Background technique [0002] Microcystin-RR (Microcystin-RR, referred to as MC-RR), is a MC variant with arginines at positions 2 and 4, this structure makes it comparable to other microcystin homologues more hydrophilic. Microcystin-RR, the most widespread MC variant after Microcystin-LR, is primarily released by eutrophic bursts of blue-green algae. In addition to poisoning wildlife, livestock, and poultry, microcystins can contaminate drinking water, causing liver damage and increased incidence of li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/327
CPCG01N27/308G01N27/3275G01N27/3278Y02E10/542
Inventor 蒋鼎张林华杜晓娇陈智栋
Owner CHANGZHOU UNIV
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