Biological preparation method for photoelectric conversion material

A photoelectric conversion material and biological preparation technology, applied in the field of photoelectrochemistry, can solve problems such as unfavorable low-carbon environmental protection, and achieve the effect of mild synthesis method and simple synthesis steps

Inactive Publication Date: 2017-11-24
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, these methods require conditions such as high temperature or hig

Method used

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  • Biological preparation method for photoelectric conversion material
  • Biological preparation method for photoelectric conversion material
  • Biological preparation method for photoelectric conversion material

Examples

Experimental program
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Effect test

Embodiment

[0023] Biological preparation method:

[0024] (1) Sulfate-reducing bacteria extraction method: commercially available sulfate-reducing bacteria, adding the obtained sulfate-reducing bacteria into 200mL Postgate medium and culturing for 1-4 days at 25-40°C in the absence of air for enrichment to cultivate.

[0025] Preparation method of photoelectric conversion material: Add excess concentration range of 10-100mM CdSO to 1mL culture medium obtained in step (1) 4 Aqueous solution, react at room temperature for 30-60 minutes, centrifuge at 4000-12000 rpm for 20 minutes, and dry the precipitate at 40-80°C for 5 hours to obtain a yellow powdery solid, which is the photoelectric conversion material CdS (see Table 1, figure 1 and figure 2 ).

[0026] Table 1 Experimental Design Scheme

[0027]

[0028] Depend on figure 1 It can be seen that the macroscopic color of the prepared CdS photoelectric material is yellow.

[0029] Depend on figure 2 It can be seen that the cry...

Embodiment 2

[0031] The photoelectric performance test of the photoelectric conversion material that above-mentioned each example obtains, wherein take example 4 as example:

[0032] The prepared CdS photoelectric material was dissolved in 1 mL of deionized water, and after ultrasonication for 15 min, the dispersion liquid was added dropwise to the surface of ITO conductive glass, and dried at 60°C for 6 h. Afterwards, the ITO modified by CdS was immersed in the photoelectric detection solution for photoelectric signal detection (see image 3 ).

[0033] The specific detection method is as follows: using a CHI 760C electrochemical workstation, using a Pt sheet as a counter electrode, a saturated calomel electrode as a reference electrode, and a CdS-modified ITO as a working electrode, 10s without light treatment, 10s light treatment.

[0034] The detection solution is an aqueous ascorbic acid solution with a molar concentration of 0.01-0.1 mM.

[0035] Depend on image 3 It can be seen ...

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Abstract

The invention specifically relates to a biological preparation method for a photoelectric conversion material, belonging to the field of photoelectrochemistry. The biological preparation method comprises the following steps: with sulfate-reducing bacteria used as a biological material, carrying out enrichment culture in a culture solution, then adding an excess aqueous CdSO4 solution, carrying out a reaction for 30-60 minutes at room temperature, and then carrying out centrifugation and drying so as to obtain the biosynthetic photoelectric conversion material. The preparation method of the invention is simple in process, easy to operate and low in cost, and has potential application value in the research fields of photoelectrochemical solar cells, photoelectrochemical decomposition of water, photoelectrochemical analysis, etc.

Description

technical field [0001] The invention belongs to the field of photoelectrochemistry, and in particular relates to a biological preparation method of a photoelectric conversion material. Background technique [0002] Photoelectrochemistry is a new discipline developed on the basis of electrochemistry. It is a discipline that studies the direct impact of light on electrodes or interface materials and the accompanying conversion of light energy, electrical energy, and chemical energy [1]. [0003] The realization of the photoelectrochemical process is directly and closely related to the type and performance of the photoelectric material. The photoelectrochemical properties, preparation methods, composite effects, shape control, and charge conduction rate of the photoelectric material itself are important for the smooth realization of the photoelectrochemical process. Influence [2]. At present, the preparation methods of optoelectronic materials mainly include hydrothermal synth...

Claims

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Application Information

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IPC IPC(8): C12P3/00H01L31/0296
CPCC12P3/00H01L31/0296Y02P20/133
Inventor 杨治庆张盾王毅
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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