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A kind of fe-tio2/bioi composite photocatalytic material and its preparation and application

A composite photocatalysis and fe-tio2 technology, applied in the field of photocatalytic materials, can solve the problems of single doping method and cumbersome experimental steps, and achieve the effect of simple and easy process, easy recycling and low raw material price

Active Publication Date: 2019-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the literature mentioned above, there are problems such as relatively simple doping methods and cumbersome experimental steps.

Method used

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  • A kind of fe-tio2/bioi composite photocatalytic material and its preparation and application
  • A kind of fe-tio2/bioi composite photocatalytic material and its preparation and application
  • A kind of fe-tio2/bioi composite photocatalytic material and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1) Fe-TiO 2 Preparation: under magnetic stirring, 17mL tetrabutyl titanate (C.P) was added dropwise to 85mL deionized water and 5mL 0.02mol / L Fe(NO 3 ) 3 9H 2 In the solution formed by mixing O solution, continue to stir for 12 hours after dropping, pour the obtained suspension into a hydrothermal reaction kettle lined with polytetrafluoroethylene, and conduct a hydrothermal reaction at 200°C for 24 hours, and the product Cool to room temperature, wash 3 times, dry at 80°C, grind to get 0.2% Fe-TiO 2 Nano powder.

[0049] 2) Preparation of BiOI: 7mmol Bi(NO 3 ) 3 ·6H 2 O was added to 119mL of absolute ethanol to obtain A solution, 7mmol of KI was added to 119mL of deionized water to obtain B solution, B was added dropwise to A to obtain C solution, and then the C solution was stirred evenly and poured into a liner lined with polytetrafluoroethylene In the hydrothermal reaction kettle of ethylene, hydrothermal reaction was carried out at 180°C for 15 hours, the pr...

Embodiment 2

[0052] 1) Fe-TiO 2 Preparation: under magnetic stirring, 17mL tetrabutyl titanate (C.P) was added dropwise to 85mL deionized water and 5mL 0.05mol / L Fe(NO 3 ) 3 9H 2 O solution mixed solution, continue to stir for 12 hours after dropping. The obtained suspension was poured into a hydrothermal reaction kettle lined with polytetrafluoroethylene, and hydrothermally reacted at 200°C for 24 hours. After the product was cooled to room temperature, it was washed three times, dried at 80°C, and ground to obtain 0.5 %Fe-TiO 2 Nano powder.

[0053] 2) Preparation of BiOI: 7mmol Bi(NO 3 ) 3 ·6H 2 O was added to 119mL of absolute ethanol to obtain A solution, 7mmol of KI was added to 119mL of deionized water to obtain B solution, B was added dropwise to A to obtain C solution, and then C solution was stirred evenly and poured into a lined with polytetrafluoroethylene In the hydrothermal reaction kettle of ethylene, hydrothermal reaction was carried out at 180°C for 15 hours, the p...

Embodiment 3

[0057] 1) Fe-TiO 2 Preparation: under magnetic stirring, 17mL tetrabutyl titanate (C.P) was added dropwise to 85mL deionized water and 5mL 0.1mol / L Fe(NO 3 ) 3 9H 2 O solution mixed solution, continue to stir for 12 hours after dropping. The obtained suspension was poured into a hydrothermal reaction kettle lined with polytetrafluoroethylene, and hydrothermally reacted at 200°C for 24 hours. After the product was cooled to room temperature, it was washed 3 times, dried at 80°C, and ground to obtain 1 %Fe-TiO 2 Nano powder.

[0058] 2) Preparation of BiOI: 7mmol Bi(NO 3 ) 3 ·6H 2 O was added to 119mL of absolute ethanol to obtain A solution, 7mmol of KI was added to 119mL of deionized water to obtain B solution, B was added dropwise to A to obtain C solution, and then C solution was stirred evenly and poured into a lined with polytetrafluoroethylene In the hydrothermal reaction kettle of ethylene, hydrothermal reaction was carried out at 180°C for 15 hours, the product ...

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Abstract

The invention discloses a Fe-TiO 2 / BiOI composite photocatalytic materials and their preparation and application belong to the field of photocatalytic materials. The Fe‑TiO 2 / BiOI composite photocatalytic material first synthesized Fe‑TiO using hydrothermal method 2 and BiOI, mixed evenly, and then prepared by mechanical grinding. The composite photocatalytic material prepared by the present invention, under visible light irradiation, 0.5% Fe-TiO 2 The photocatalytic activity of / BiOI is that of pure TiO 2 630.56 times that of 0.5% Fe‑TiO 2 22.37 times that of pure BiOI, which is 1.74 times that of pure BiOI. The composite photocatalytic material of the present invention has good catalytic degradation ability for methyl orange, has the advantages of low raw material price, simple and easy process, mild reaction conditions, high efficiency, stability, and easy recycling. It is better than single TiO 2 Has better photocatalytic performance.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to a Fe-TiO 2 / BiOI composite photocatalytic material and its preparation method and application. Background technique [0002] The preparation of efficient photocatalytic materials is the core of environmental pollution control technology, but the highly anticipated TiO 2 Photocatalytic materials have disadvantages such as low quantum efficiency and inability to absorb visible light, so people have been working on improving TiO 2 Its own photocatalytic activity and continuous development of more efficient photocatalytic materials. [0003] Iron ion doping is one of the traditional methods. For example, J Choi et al. doped TiO with various metal ions (Zn, Fe, Cr, etc.) 2 , and studied the photocatalytic properties of these composites, and found that TiO doped with metal ions 2 The photocatalytic activity has been enhanced to a certain extent. [1] J Choi, H Park, MR Hoff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135B01J35/00C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J27/135C02F2101/34C02F2101/38B01J35/39
Inventor 柳松甘金朝黄小敏阮玲峰
Owner SOUTH CHINA UNIV OF TECH