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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

A method for preparing a porous bismuth dialkyldithiocarbamate visible light catalyst. Dissolve bismuth salt and dialkyldithiocarbamate in a solvent respectively, and add the dialkyldithiocarbamate solution. Add it dropwise to the bismuth salt solution to produce a yellow precipitate; or directly mix the bismuth salt and dialkyldithiocarbamate powder, dry grind or grind with a grinding aid to obtain yellow powder; filter, wash and dry , to obtain porous bismuth dialkyldithiocarbamate; in the present invention, through the chemical co-precipitation reaction or low-temperature solid phase reaction of soluble bismuth salt and dialkyl dithiocarbamate, dioxins with uniform size and large specific surface area are obtained. Bismuth alkyldithiocarbamate; the bismuth dialkyldithiocarbamate prepared by the invention has a monoclinic phase structure, high crystallinity, pure phase, uniform morphology and size, good dispersion, non-toxic and environmentally friendly, It is stable in air, water and most solvents, resistant to acids and alkalis, and has excellent photocatalytic pollutant degradation and water decomposition hydrogen production activities.

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
CPCC01B3/042C02F1/30C07C333/16B01J31/0247C01B2203/1088C01B2203/0277C02F2101/38C02F2101/34C02F2101/308C07B2200/13B01J35/60B01J35/39Y02E60/36
Inventor 阙文修杨亚威杜亚平
Owner XI AN JIAOTONG UNIV
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