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Preparation method of porous dialkyl dithiocarbamate bismuth visible light catalyst

A technology of dialkyl dithiocarbamic acid and dialkyldithioamino group, which is applied in the field of preparation of porous dialkyldithiocarbamate bismuth visible light catalyst, can solve the problem of fast synthesis reaction rate, physical and chemical properties Difficult to study, hard to shape and other problems, to achieve uniform shape and size, excellent photocatalytic pollutant degradation and water splitting hydrogen production activity, and low cost

Active Publication Date: 2018-10-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fast synthesis reaction rate of bismuth dialkyldithiocarbamate, it is difficult to control its morphology through a simple liquid-phase co-precipitation reaction to synthesize nano-sized functional materials with uniform particle size and good dispersion, and for bismuth-based It is even more difficult to study the physical and chemical properties of complexes at the mesoscopic scale

Method used

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  • Preparation method of porous dialkyl dithiocarbamate bismuth visible light catalyst
  • Preparation method of porous dialkyl dithiocarbamate bismuth visible light catalyst
  • Preparation method of porous dialkyl dithiocarbamate bismuth visible light catalyst

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Embodiment 1

[0034]The preparation method of porous bismuth diethyldithiocarbamate is: at room temperature, 1mmol bismuth acetate and 3mmol sodium diethyldithiocarbamate trihydrate are respectively dissolved in 20mL edetate disodium aqueous solution (0.15 mol / L) and pure water, the sodium diethyldithiocarbamate aqueous solution is added dropwise in the bismuth acetate aqueous solution, gradually produces a yellow precipitate, after the dropwise addition is completed, filter, add 40mL water, filter, wash and dry to obtain The yellow powder with a size of 2 μm is porous bismuth diethyldithiocarbamate particles.

[0035] The prepared porous bismuth diethyldithiocarbamate particles are identified as monoclinic phase through powder X-ray diffraction, with high crystallinity (see figure 1 ); the product was observed with a scanning electron microscope to be a square with a nanoporous structure on the surface, and the size was 2 μm (see figure 2 ); detected with a UV-visible spectrophotometer, ...

Embodiment 2

[0037] The preparation method of porous bismuth diethyldithiocarbamate is: at 60 DEG C, 1mmol bismuth neododecanoate and 3mmol ammonium diethyldithiocarbamate are respectively dissolved in 20mL ethanol (with hydrochloric acid to adjust the pH to be less than 2 ) and pure ethanol, the diethyldithiocarbamate ammonium ethanol solution is added dropwise in the bismuth neododecanoate ethanol solution, gradually produces a yellow precipitate, after the dropwise addition, filter, add 40mL water, filter, wash and Dried to obtain a yellow powder with a size of 20 μm (see image 3 ), which are porous bismuth diethyldithiocarbamate particles.

Embodiment 3

[0039] The preparation method of porous bismuth diethyldithiocarbamate is: under 0 ℃ ice bath, 1mmol bismuth acetate and 3mmol sodium diethyldithiocarbamate trihydrate are respectively dissolved in 20mL formamide (adjust pH with hydrochloric acid Less than 2) and pure formamide, add sodium diethyldithiocarbamate formamide solution dropwise to bismuth acetate formamide solution, gradually produce a yellow precipitate, after the dropwise addition, filter, add 40mL of water, filter and wash and drying to obtain a yellow powder with a size of 100 μm, namely porous bismuth diethyldithiocarbamate particles.

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Abstract

The invention discloses a method for preparing a porous bismuth dibutyldithiocarbamate visible light catalyst. The method comprises the following steps: respectively dissolving bismuth salt and dialkyl dithiocarbamate into a solvent, and dropping a dialkyl dithiocarbamate solution into a bismuth salt solution one droplet by one droplet so as to generate yellow precipitate; or mixing the bismuth salt with dialkyl dithiocarbamate powder, performing dry-grinding or grinding with a grinding assistant so as to obtain yellow powder; filtering, washing, and drying, so as to obtain porous bismuth dibutyldithiocarbamate. By adopting the method, through a chemical coprecipitation reaction or a low-temperature solid-phase reaction of the dissoluble bismuth salt and the dialkyl dithiocarbamate, bismuth dibutyldithiocarbamate of a uniform size and a large specific surface area can be prepared; the bismuth dibutyldithiocarbamate prepared by using the method is of a monoclinic phase structure, is high in degree of crystallinity, pure in phase state, uniform in morphology and size, good in dispersibility, non-toxic and environmental-friendly, stable in air water and most solvents, good in acid-base resistance, and excellent in photocatalysis pollutant degradation and water decomposition hydrogen production activity.

Description

technical field [0001] The invention belongs to the technical field of material chemistry and photocatalysis, and in particular relates to a preparation method of a porous bismuth dialkyldithiocarbamate visible light catalyst. Background technique [0002] Due to the special properties of bismuth, and it is non-toxic and cheap, bismuth-based inorganic semiconductor photocatalytic materials, such as Bi 2 o 3 , BiOCl, BiOBr, BiOI, Bi 2 o 2 CO 3 、 Bi 2 S 3 、BiPO 4 、BiVO 4 、 Bi 2 WO 6 、 Bi 2 MoO 6 、 Bi 2 sn 2 o 7 etc., have received extensive attention due to their excellent visible-light photocatalytic activity. In recent years, some organic bismuth complexes are low in cost, easy to synthesize, safe and environmentally friendly, convenient for large-scale synthesis, and also have excellent photocatalytic activity. , antibacterial and other application fields, the prospect is very broad, and it is an important new material in the 21st century. [0003] Compound...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C333/16B01J31/04B01J35/10C02F1/30C01B3/04C02F101/34C02F101/38
CPCB01J31/0247B01J35/004B01J35/10C01B3/042C01B2203/0277C01B2203/1088C02F1/30C02F2101/308C02F2101/34C02F2101/38C07B2200/13C07C333/16Y02E60/36
Inventor 阙文修杨亚威杜亚平
Owner XI AN JIAOTONG UNIV
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