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Floating environmental restoration material of Fe2O3-doped TiO2 loaded expanded perlite and preparation method of floating environmental restoration materials

A technology of expanded perlite and repair materials, applied in the field of environmental restoration, can solve problems such as difficult separation, unfavorable recycling, easy aggregation, etc., and achieve the effects of controllable hydrolysis degree, improved visible light adsorption, and simple synthesis process

Active Publication Date: 2017-08-29
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, traditional Fe 2 o 3 There are some problems with supporting titanium dioxide, such as powdered Fe 2 o 3 / TiO 2 Difficult to separate, easy to aggregate, not conducive to recycling

Method used

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  • Floating environmental restoration material of Fe2O3-doped TiO2 loaded expanded perlite and preparation method of floating environmental restoration materials
  • Floating environmental restoration material of Fe2O3-doped TiO2 loaded expanded perlite and preparation method of floating environmental restoration materials
  • Floating environmental restoration material of Fe2O3-doped TiO2 loaded expanded perlite and preparation method of floating environmental restoration materials

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Take a certain amount of FeCl 3 ·6H 2 O was dissolved in oleic acid to form a mixture A; A was vigorously stirred and lauryl alcohol was added to form a mixture B; B was transferred to a microwave reactor for 30 minutes; the temperature was lowered, centrifuged, washed, ultrasonicated, and centrifuged again to obtain Fe 2 o 3 . Its scanning electron microscope picture is as figure 1 As shown, Fe 2 o 3 It is a spherical particle, and the diameter of the material is between 20 and 30 nm.

[0029] Take 0.1g of Fe 2 o 3 Add 50mL rhodamine B solution to a 50mL quartz tube, absorb in dark for 1.5 h, and illuminate with 500w xenon lamp for 4h. Rhodamine B solution concentration: 10mg / L. Such as image 3 As shown, the experimental measurement of the degradation rate of Rhodamine B was 9.32%.

example 2

[0031] Take 10ml of absolute ethanol, 5~7ml of tetraisopropyl titanate, pour into a beaker and stir to obtain solution A, 0.01g of Fe 2 o 3 Add a certain amount of water and 5-7ml of acetic acid to obtain solution B, and stir with a magnetic stirrer at room temperature. Put the 10-20 mesh expanded perlite particles that are washed, air-dried, sieved, and etched with NaOH into solution A, and solution B is added dropwise to the mixture of solution A and expanded perlite to obtain Stable and homogeneous transparent sol, aged at room temperature for 24 hours; dried perlite and calcined in a tube furnace at 450°C for 10 minutes in an oxygen atmosphere (300~400ml / min) to obtain Fe 2 o 3 -TEP(O 2 ) environmental remediation materials, whose appearance is as follows figure 2 shown.

[0032] Take 0.1g of Fe 2 o 3 -TEP(O 2 ) and 50mL rhodamine B solution were added to a 50mL quartz tube, darkly adsorbed for 1.5 h, and irradiated with a 500w xenon lamp for 4h. Rhodamine B solu...

example 3

[0034] Take 10ml of absolute ethanol, 5~7ml of tetraisopropyl titanate, pour into a beaker and stir to obtain solution A, 0.01g of Fe 2 o 3 Add a certain amount of water and 5-7ml of acetic acid to obtain solution B, and stir with a magnetic stirrer at room temperature. Put the 10-20 mesh expanded perlite particles that are washed, air-dried, sieved, and etched with NaOH into solution A, and solution B is added dropwise to the mixture of solution A and expanded perlite to obtain Stable and homogeneous transparent sol, aged at room temperature for 24 hours; dried perlite and then calcined in a tube furnace at 450°C for 10 minutes in an ammonia atmosphere (300~400ml / min) to obtain Fe 2 o 3 -TEP(NH 3 ) Environmental restoration materials.

[0035] Take 0.1g of Fe 2 o 3 -TEP(NH 3 ) and 50mL rhodamine B solution were added to a 50mL quartz tube, darkly adsorbed for 1.5h, and irradiated with a 500w xenon lamp for 4h. Rhodamine B solution concentration: 10mg / L. Such as ima...

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Abstract

The invention discloses a floating environmental restoration material of Fe2O3-doped TiO2 loaded expanded perlite and a preparation method of the floating environmental restoration materials. According to the conditions that the expanded perlite is a low-density porous material, and has the characteristics of being free of toxicity and high in acid and alkali resistance and adsorptivity, a lot of silanol groups and silyl-ether groups exist on the surface and are combined with the photocatalysis ability of TiO2, and the photocatalysis ability is further improved by using Fe2O3 doping and calcination in oxygen and / or ammonia gas to prepare the easy-to-recover environmental restoration material. The environmental restoration material can be applied to removal of organic pollutants in the environment.

Description

technical field [0001] The invention relates to an environment restoration material for removing organic pollutants in a water body environment and a preparation method thereof, belonging to the field of environment restoration. Background technique [0002] At present, the effect of different calcination atmospheres on Fe 2 o 3 / TiO 2 There are few studies on the photocatalytic performance, and it is still in the preliminary research stage. prepared Fe by the sol-gel method by Zhu et al. 2 o 3 -TiO 2 / FAC composites, and calcined at high temperature (500℃) for 2h in air atmosphere to remove residual organic matter on the surface (Zhu J, Liu S, Ge J, et al. Synthesis of Fe 2 o 3 —TiO 2 / fly-ash-cenosphere composite and its mechanism of photocatalytic oxidation under visible light[J]. Research on Chemical Intermediates, 2015, 42(4):1-18.); Palanisamy B et al prepared Fe by sol-gel method 2 o 3 -TiO 2 The composite material was calcined at high temperature (400°C)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C02F1/30C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J23/002B01J23/745C02F1/30C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2305/10
Inventor 王小治周颜霞薛红波侯建华王圣森尹微琴封克
Owner YANGZHOU UNIV
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