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Disk type alpha-Fe2O3 photocatalyst and preparation method and application thereof

A photocatalyst, sheet-like technology, applied in the field of material science, to achieve the effects of controllable morphology, good photocatalytic activity and mild reaction conditions

Active Publication Date: 2014-02-26
盐城市鹤业实业投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are only α-Fe particles with spherical, octahedral, spindle, and ellipsoidal particles at home and abroad. 2 o 3 There are no reports on the synthesis of nanopowders, but disc-shaped α-Fe has not yet been seen. 2 o 3 Report on nanopowder

Method used

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  • Disk type alpha-Fe2O3 photocatalyst and preparation method and application thereof
  • Disk type alpha-Fe2O3 photocatalyst and preparation method and application thereof
  • Disk type alpha-Fe2O3 photocatalyst and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Step 1: FeCl 3 ·6H 2 O was dissolved in deionized water, stirred for 30 minutes until evenly stirred to obtain solution A, and FeCl in solution A 3 ·6H 2 The concentration of O is 0.08mol / L; the NH 4 VO 3 Dissolve in deionized water at 80°C, stir for 30 minutes until evenly stirred to obtain solution B, and NH in solution B 4 VO 3 The concentration of the solution is 0.08mol / L; according to the molar ratio of Fe and V is 1:1, solution B is added dropwise to solution A, stirred for 30min until evenly stirred, and a mixed solution is obtained;

[0032]Step 2: adjusting the pH value of the mixed solution to 10 with a NaOH solution with a concentration of 4mol / L;

[0033] Step 3: Put the mixed solution after adjusting the pH value into the polytetrafluoroethylene tank of the hydrothermal reactor, control the filling ratio of the hydrothermal reactor to 70%, and then seal the hydrothermal reactor;

[0034] Step 4: Put the hydrothermal reaction kettle into a high-tempe...

Embodiment 2

[0037] Step 1: FeCl 3 ·6H 2 O was dissolved in deionized water, stirred for 30 minutes until evenly stirred to obtain solution A, and FeCl in solution A 3 ·6H 2 The concentration of O is 0.08mol / L; the NH 4 VO 3 Dissolve in deionized water at 85°C, stir for 30 minutes until evenly stirred to obtain solution B, and NH in solution B 4 VO 3 The concentration of the solution is 0.08mol / L; according to the molar ratio of Fe and V is 1:1, solution B is added dropwise to solution A, stirred for 30min until evenly stirred, and a mixed solution is obtained;

[0038] Step 2: adjust the pH value of the mixed solution to 12 with a NaOH solution with a concentration of 4mol / L;

[0039] Step 3: Put the mixed solution after adjusting the pH value into the polytetrafluoroethylene tank of the hydrothermal reactor, control the filling ratio of the hydrothermal reactor to 65%, and then seal the hydrothermal reactor;

[0040] Step 4: Put the hydrothermal reaction kettle into a high-tempera...

Embodiment 3

[0045] Step 1: FeCl 3 ·6H 2 O was dissolved in deionized water, stirred for 30 minutes until evenly stirred to obtain solution A, and FeCl in solution A 3 ·6H 2 The concentration of O is 0.08mol / L; the NH 4 VO 3 Dissolve in deionized water at 90°C, stir for 30 minutes until evenly stirred to obtain solution B, and NH in solution B 4 VO 3 The concentration of the solution is 0.08mol / L; according to the molar ratio of Fe and V is 1:1, solution B is added dropwise to solution A, stirred for 30min until evenly stirred, and a mixed solution is obtained;

[0046] Step 2: adjusting the pH value of the mixed solution to 10 with a NaOH solution with a concentration of 4mol / L;

[0047] Step 3: Put the mixed solution after adjusting the pH value into the polytetrafluoroethylene tank of the hydrothermal reactor, control the filling ratio of the hydrothermal reactor to 60%, and then seal the hydrothermal reactor;

[0048] Step 4: Put the hydrothermal reaction kettle into a high-temp...

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Abstract

The invention discloses a disk type alpha-Fe2O3 photocatalyst and a preparation method and application thereof. The preparation method comprises the following steps of dissolving FeCl3.6H2O into water so as to obtain a solution A, dissolving NH4VO3 into hot water so as to obtain a solution B, adding the solution B into the solution A according to the molar ratio of Fe to V being 1:1 so as to obtain a mixed solution, regulating the pH value of the mixed solution to 10-12, then pouring the mixed solution into a hydrothermal kettle for hydrothermal reaction so as to prepare the disk type alpha-Fe2O3 photocatalyst. The appearance of the prepared disk type alpha-Fe2O3 photocatalyst is disk type, and the crystal form of the prepared disk type alpha-Fe2O3 photocatalyst is rhombohedral. The preparation method has the advantages that the processes are simple, the operation is convenient, the preparation cycle is short, the reaction conditions are mild, the production efficiency is high, and the structure and appearance of the target product are controllable. The prepared disk type alpha-Fe2O3 photocatalyst has good photocatalytic activity and can be used for degrading organics in ultraviolet light.

Description

technical field [0001] The invention belongs to the field of material science, in particular to a disc-shaped α-Fe 2 o 3 Photocatalyst and its preparation method and application. Background technique [0002] With the enhancement of human's awareness of environmental protection and the increasingly stringent requirements of environmental protection legislation, the pollution problem in the chemical industry has become a public social problem. People hope to use non-toxic and harmless raw materials to produce environmentally friendly products. Now the research on catalysts for degrading organic pollutants is becoming a focus of attention, and it plays a key role in realizing the above goals. [0003] At present, semiconductor photocatalysis technology has received widespread attention from environmental and energy researchers in various countries. The development of photocatalytic oxidation technology has brought new development potential to the treatment of environmental...

Claims

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Application Information

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IPC IPC(8): C01G49/06B82Y30/00B01J35/02B01J23/745C02F1/32
CPCY02W10/37
Inventor 谈国强杨薇任慧君
Owner 盐城市鹤业实业投资有限公司
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