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Method for improving photovoltage signal on surface of BiOCl

A surface photovoltage and signal technology, applied in the field of material chemistry and photocatalytic materials, to achieve the effect of improving photocatalytic activity, simple operation and easy realization

Active Publication Date: 2021-10-01
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But at present, there is no better method for surface modification.

Method used

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  • Method for improving photovoltage signal on surface of BiOCl
  • Method for improving photovoltage signal on surface of BiOCl
  • Method for improving photovoltage signal on surface of BiOCl

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation process of the surface photovoltaic signal enhancement BiOCl of the present embodiment is as follows:

[0046] 1) Disperse orthogonal crystalline type black phosphorus in 40 ml of ice acetic acid, ultrasonic 10 minute, dissolved 5 grams of nitrate in black phosphorus-ice acetate suspension system, black phosphorus and generated BiOCl mass ratio of 0.1%; nitric acid Bismuth-Iceacerate-Black Phosphorus suspension is added dropwise to 10 ml of KCl solution, the molar number of KCl is equal to the mole of nitrate, and the resulting precipitate is transferred to the hydrothermal reaction kettle, 180 ° C, heat, heat, 24 hours, natural Cool to room temperature.

[0047] 2) After washing samples with deionized water, was washed 1-2 times with alcohol, and the sample was dried in vacuo 60 ° C.

[0048] Compared to the contrast 1, black phosphorus was added, and the mass ratio of black phosphorus / BiOCl was 0.1%.

[0049] figure 1 A comparison of surface photovoltai...

Embodiment 2

[0051] The specific preparation process of the surface photovoltaic signal enhanced BiOCl of the present embodiment is as follows:

[0052]1) Disperse orthodontic crystalline type black phosphorus in 50 ml of ice acetic acid, ultrasonic 10 minutes, and dissolve 5 g nitrate in black phosphorus-ice acetate suspension system, black phosphorus and the production of BiOCl mass ratio is 0.5%; nitric acid Bismuth-Iceacerate-Black Phosphorus suspension is added dropwise to 10 ml of KCl solution, the molar number of KCl is equal to the moles of bismuth nitrate, and the resulting precipitate is transferred to the hydrothermal reaction kettle, 140 ° C water and heat for 12 hours, natural Cool to room temperature.

[0053] 2) After washing samples with deionized water, was washed 1-2 times with alcohol, and the sample was dried in vacuo 60 ° C.

[0054] In contrast to the contrast, black phosphorus, black phosphorus / formation BiOCl mass ratio was 0.5%, and the water heating temperature was ...

Embodiment 3

[0057] The specific preparation process of the surface photovoltaic signal enhanced BiOCl of the present embodiment is as follows:

[0058] 1) Disperse orthogonal crystalline type black phosphorus in 60 ml of ice acetic acid, ultrasonic for 10 minutes, dissolved 5 g nitrate in black phosphorus-ice acetic acid suspension system, black phosphorus and the production of BiOCl mass ratio of 1%; nitric acid - Iceacerate - Black Phosphorus suspension is added dropwise to 10 ml of KCl solution, the molar number of KCl is equal to the mole of bismuth nitrate, and the resulting precipitate is transferred to the hydrothermal reaction kettle, 160 ° C water and heat reaction for 18 hours, nature Cool to room temperature.

[0059] 2) After washing samples with deionized water, was washed 1-2 times with alcohol, and the sample was dried in vacuo 60 ° C.

[0060] Comparative Example 1, the addition of black phosphorus, black phosphorus and the production of BiOCl mass ratio were 1%, and the water...

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Abstract

The invention relates to the field of material chemistry, in particular to the field of photocatalytic materials, and particularly relates to a method for improving a BiOCl surface photovoltage signal. The method comprises the following steps: dispersing black phosphorus powder in a certain volume of glacial acetic acid, and carrying out ultrasonic dispersion; adding bismuth nitrate, dissolving the bismuth nitrate in the black phosphorus-glacial acetic acid suspension solution, and dropwise adding a KCl solution (the mole number of KCl is equal to the mole number of bismuth nitrate) into the bismuth nitrate-glacial acetic acid-black phosphorus suspension solution; and transferring the generated suspension system into a hydrothermal reaction kettle for hydrothermal reaction, after the hydrothermal reaction is naturally cooled to room temperature, washing the precipitate with deionized water and alcohol, taking out the precipitate, and carrying out vacuum drying to obtain a sample. A surface photovoltage signal of a BiOCl sample prepared under the assistance of a proper amount of black phosphorus is obviously enhanced in a range of 300-400nm. The method is easy to operate, easy to implement, safe and reliable.

Description

Technical field [0001] The present invention relates to the field of material chemistry, in particular the field of photocatalytic materials, in particular a method of improving the surface photovoltage signal of the BiOCl. Background technique [0002] Biocl is a three-dimensional oxide having a V-VI-VII home element, a crystal structure belongs to a PBFCL type layer structure, has a high degree of anisotropy and a wide disable band width of 3.0 to 3.5 eV, with a special layered structure And suitable forbidden band width, thus become one of the excellent photocatalytic materials. Under the excitation of sufficient energy light, the electron (E) of BiOCl photocatalyst - ) Absorb sufficient energy through the ban, transition to the conduction, leave light empty on the price (H + This forms a light electron-hole pair (e - -H + ). The electrons migrated to the surface of the BiOCL were reacted with the organic matter adsorbed on the surface, and the air was oxidized with the organi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/186
CPCB01J27/186B01J35/39
Inventor 钟俊波杨财陈久福黄生田
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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