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Method for preparing morphology and constitution controllable WO3 nano sheet/g-C3N4 nano composite material

A nanocomposite material and composite material technology are applied in the field of preparation of WO3/g-C3N4 nanocomposite materials to achieve good catalytic effect, promotion of dispersibility and good stability.

Inactive Publication Date: 2017-06-13
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the present invention uses WO 3 Nanosheets and g-C 3 N 4 Composite nanosheets to prepare sheet-composite WO 3 / g -C 3 N 4 Nanocomposite materials have achieved good results for the degradation of MO, and this preparation method has not been reported

Method used

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  • Method for preparing morphology and constitution controllable WO3 nano sheet/g-C3N4 nano composite material
  • Method for preparing morphology and constitution controllable WO3 nano sheet/g-C3N4 nano composite material
  • Method for preparing morphology and constitution controllable WO3 nano sheet/g-C3N4 nano composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1#WO 3 Nanosheet / g-C 3 N 4 The specific preparation steps of nanocomposite materials are as follows:

[0032] (1) g-C 3 N 4 Preparation of nanosheets

[0033] Weigh 2.5g guanidine hydrochloride and 2.5g NH 4 Grind and mix Cl in a mortar evenly, then calcinate in a muffle furnace at 600°C for 2h 45min, and the product obtained is g-C 3 N 4 Nanosheets.

[0034] (2) WO 3 Nanosheet / g-C 3 N 4 Preparation of nanocomposites

[0035] At 25°C, dissolve 250 mg of sodium oleate into 75 mL of nitric acid with a concentration of 4.8 mol / L, and add 25 mg of the above-prepared g-C under stirring conditions. 3 N 4 , stirred for 3 hours, added 2 mL of 0.1mol / L sodium tungstate solution dropwise, kept it warm for 30 minutes, raised the temperature to 60°C, stirred for 2 hours, collected the precipitate, washed and dried to obtain WO 3 Nanosheet / g-C 3 N 4 nanocomposites.

Embodiment 2

[0037] 2#WO 3 Nanosheet / g-C 3 N 4 The specific preparation steps of nanocomposite materials are as follows:

[0038] (1) g-C 3 N 4 preparation of

[0039] Same as g-C in embodiment 1 3 N 4 method of preparation.

[0040] (2) WO 3 Nanosheet / g-C 3 N 4 Preparation of nanocomposites

[0041] At 10°C, dissolve 250 mg of sodium oleate into 75 mL of nitric acid with a concentration of 4.8 mol / L, and add 25 mg of the above-prepared g-C under stirring conditions. 3 N 4 , stirred for 3 hours, added 2 mL of 0.1mol / L sodium tungstate solution dropwise, kept it warm for 30 minutes, raised the temperature to 60°C, stirred for 2 hours, collected the precipitate, washed and dried to obtain WO 3 Nanosheet / g-C 3 N 4 nanocomposites.

Embodiment 3

[0043] 3#WO 3 Nanosheet / g-C 3 N 4 The specific preparation steps of nanocomposite materials are as follows:

[0044] (1) g-C 3 N 4 preparation of

[0045] Same as g-C in embodiment 1 3 N 4 method of preparation.

[0046] (2) WO 3 Nanosheet / g-C 3 N 4 Preparation of nanocomposites

[0047] At 45°C, dissolve 250 mg of sodium oleate into 75 mL of nitric acid with a concentration of 4.8 mol / L, and add 25 mg of the above-prepared g-C under stirring conditions. 3 N 4 , stirred for 3 hours, added 2 mL of 0.1mol / L sodium tungstate solution dropwise, kept it warm for 30 minutes, raised the temperature to 60°C, stirred for 2 hours, collected the precipitate, washed and dried to obtain WO 3 Nanosheet / g-C 3 N 4 nanocomposites.

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Abstract

The invention discloses a method for preparing a morphology and constitution controllable WO3 nano sheet / g-C3N4 nano composite material, and belongs to the field of photocatalysts. The nano composite material is of a structure that WO3 nano sheets are uniformly distributed on layered g-C3N4 nano sheets. The nano composite material is simple in preparation process and is prepared by using a one-step method. The method comprises the following steps: by taking sodium oleate as a surfactant, firstly, dissolving the surfactant into a dilute nitric acid solution at certain temperature, adding g-C3N4, sufficiently dispersing the g-C3N4, slowly adding a sodium tungstate solution, and performing reaction for 120 minutes at 60 DEG C, thereby obtaining the WO3 nano sheet / g-C3N4 nano composite material. The nano composite material can be used as a photocatalyst for degrading MO, and has good catalysis effects and stability.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a 3 Nanosheets and graphitic carbon nitride (g-C 3 N 4 ) photocatalyst WO 3 / g -C 3 N 4 The preparation technology of nanocomposite materials, especially a kind of WO with controllable morphology and composition 3 / g -C 3 N 4 Preparation techniques of nanocomposites. The WO prepared by the present invention 3 / g -C 3 N 4 The nanocomposite material is a photocatalyst, which has achieved good catalytic effect for photodegradation of methyl orange (MO). Background technique [0002] Semiconductor photocatalysis drives a series of important chemical reactions by directly using sunlight, converts low-density solar energy into high-density chemical energy or directly degrades and mineralizes organic pollutants, and has shown great promise in solving energy shortages and environmental pollution. Huge potential (G.Zhou, et al. Well-Steered Charge-Carrier Transfer in 3DBranched C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/30
CPCC02F1/30B01J27/24C02F2101/308C02F2305/10B01J35/39
Inventor 陈国昌乔红斌叶明富
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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