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Carbon nitride loaded iron oxide photocatalyst capable of efficiently degrading p-nitrophenol

A technology of p-nitrophenol and photocatalyst, which is applied in the direction of physical/chemical process catalyst, oxidized water/sewage treatment, chemical instruments and methods, etc., to achieve the effect of easy-to-obtain raw materials, excellent photocatalytic performance, and simple preparation process

Inactive Publication Date: 2017-02-15
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To the best of our knowledge, there are no reports of Fe 2 o 3 / g -C 3 N 4 Application of Composite Catalyst in Photocatalytic Oxidation of p-Nitrophenol

Method used

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  • Carbon nitride loaded iron oxide photocatalyst capable of efficiently degrading p-nitrophenol
  • Carbon nitride loaded iron oxide photocatalyst capable of efficiently degrading p-nitrophenol
  • Carbon nitride loaded iron oxide photocatalyst capable of efficiently degrading p-nitrophenol

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Example 1: Take 5g of guanidine hydrochloride, transfer it to a crucible, cover and seal it, transfer it to a muffle furnace, raise it from room temperature to 550 °C at a rate of 2.3 °C / min, keep it warm for 4 hours, cool naturally to room temperature, and grind into powder to obtain g-C 3 N 4 nanocatalyst.

Embodiment 2

[0015] Example 2: Weigh 5g of guanidine hydrochloride, transfer it to a crucible, cover and seal it, transfer it to a muffle furnace, raise it from room temperature to 550 °C at a rate of 2.3 °C / min, keep it warm for 4 hours, cool naturally to room temperature, and grind into powder to obtain g-C 3 N 4 nanocatalyst. Weigh 0.097g of Fe(NO 3 ) 3 9H 2 O, dissolved in 50mL isopropanol, stirred for 30min to obtain a uniform solution, 1.3mL of the above solution was added dropwise to 0.5g g-C 3 N 4 , let stand, dry at 60°C, transfer the resulting mixture to a tube furnace, and pass through N 2 (200mL / min), raised from room temperature to 350 °C at a rate of 1 °C / min, kept for 3 hours, and naturally cooled to room temperature to obtain 0.1wt% Fe 2 o 3 / g -C 3 N 4 catalyst.

Embodiment 3-6

[0017] The preparation method is the same as in Example 2, except that Fe 2 o 3 / g -C 3 N 4The loading amount of the catalyst is 0.3wt%, 0.5wt%, 0.7wt%, 0.8wt% in turn.

[0018] The preparation method of the present invention is novel, and raw material is cheap, and preparation process is simple, and yield is higher, and obtained Fe 2 o 3 / g -C 3 N 4 Nanomaterials have good photocatalytic oxidation performance for p-nitrophenol.

[0019] The obtained Fe of above-mentioned embodiment 2 o 3 / g -C 3 N 4 The XRD spectrum of the sample is shown in figure 1 , where curves (a), (b), (c), (d), (e), (f) are g-C 3 N 4 , 0.1 wt% Fe 2 o 3 / g -C 3 N 4 , 0.3 wt% Fe 2 o 3 / g -C 3 N 4 , 0.5 wt% Fe 2 o 3 / g -C 3 N 4 , 0.7 wt% Fe 2 o 3 / g -C 3 N 4 and 0.8wt% Fe 2 o 3 / g -C 3 N 4 The XRD spectrum; The prepared Fe 2 o 3 / g -C 3 N 4 The TEM pictures of the samples are shown in figure 2 , where graphs (a) and (b) are respectively g-C 3 N 4 The SEM and TEM ph...

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Abstract

The invention relates to a carbon nitride loaded iron oxide photocatalyst capable of efficiently degrading p-nitrophenol and belongs to the field of nano material preparation. A preparation method of the carbon nitride loaded iron oxide photocatalyst includes: using a thermal polymerization method to prepare a carrier g-C3N4, and grinding the obtained sample into powder for standby; using an equivalent-volume impregnation method to prepare Fe2O3 / g-C3N4, to be more specific, weighing a certain amount of iron nitrate, using isopropanol as the solvent, using the equivalent-volume impregnation method to impregnate the iron nitrate solution into the carrier, transferring the obtained mixture into a tube furnace, heating from room temperature to 350 DEG C at the speed of 1 DEG C / minute, and keeping the temperature for 3 hours to obtain the Fe2O3 / g-C3N4. The Fe2O3 / g-C3N4 catalyst prepared by the method has excellent photocatalytic performance on the p-nitrophenol. The carbon nitride loaded iron oxide photocatalyst is cheap in raw material, easy in raw material obtaining, simple in preparation process, high in yield and promising in application prospect in the photocatalysis field.

Description

technical field [0001] The present invention relates to a kind of Fe 2 o 3 / g -C 3 N 4 : A photocatalyst for efficiently degrading p-nitrophenol, its preparation method and its photocatalytic oxidation of p-nitrophenol, specifically related to the preparation of two-dimensional g-C with guanidine hydrochloride as a precursor by thermal polymerization 3 N 4 Nanosheets, g-C prepared by isometric impregnation method 3 N 4 load Fe 2 o 3 The photocatalyst is obtained to obtain a composite semiconductor nanocatalyst with high photocatalytic oxidation activity for p-nitrophenol, which belongs to the field of nanomaterial preparation. Background technique [0002] With the rapid development of industry, serious water pollution problems appear all over the country. Water pollution control has become the top priority of environmental governance. Phenolic wastewater is the main source of water pollution due to its complex composition, long residence time in the environment, h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F1/72C02F101/38C02F101/34
CPCC02F1/30C02F1/722C02F1/725B01J27/24C02F2101/345C02F2101/38C02F2305/02C02F2305/10B01J35/39
Inventor 戴洪兴林虹霞邓积光刘雨溪谢少华
Owner BEIJING UNIV OF TECH
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