Novel photocatalyst NiGa2O4/AQ/MoO3 as well as preparation method and application thereof

A photocatalyst, a new type of technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as slowing electron transport speed and affecting photocatalytic efficiency , to achieve the effect of improving electron transfer efficiency, enhancing photocatalytic activity and improving efficiency

Active Publication Date: 2019-03-08
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of electron transfer through conductive channels, due to the mass of electrons, there is resistance in the transfer process, and the speed of electron transfer will slow down, thus affecting the photocatalytic efficiency.

Method used

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  • Novel photocatalyst NiGa2O4/AQ/MoO3 as well as preparation method and application thereof
  • Novel photocatalyst NiGa2O4/AQ/MoO3 as well as preparation method and application thereof
  • Novel photocatalyst NiGa2O4/AQ/MoO3 as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Novel photocatalyst NiGa 2 o 4 / AQ / MoO 3

[0031] (1) The preparation method is as follows

[0032] 1. Preparation of nano-NiGa 2 o 4

[0033] 0.37g nanometer Ga 2 o 3 Add it to 50mL of a solution containing 0.45g of nickel nitrate, adjust the pH of the resulting mixture to 12 with 1mol / L sodium hydroxide, and stir for 30min while adjusting. The sample was brought to room temperature to obtain a light blue precipitate, which was washed several times with deionized water. The obtained precipitate was dried at 80°C for 8 hours to obtain NiGa 2 o 4 Powder. Grind the powder finely, bake it in a muffle furnace at 500°C for 2 hours, take it out and grind it to get nano-NiGa 2 o 4 .

[0034] 2. Preparation of nano-MoO 3

[0035] 1g(NH 4 ) 6 Mo 7 o 24 4H 2 O dissolved in 36 mL 65% HNO 3 In, by volume ratio, (NH 4 ) 6 Mo 7 o 24 4H 2 O and HNO 3 The mixed solution: deionized water=1:5, deionized water was added, and after complete dissolut...

Embodiment 2

[0047] Embodiment 2 novel photocatalyst NiGa 2 o 4 / AQ / MoO 3 Application in photocatalytic conversion of nitrite and sulfite 2 o 4 / AQ / MoO 3 Add to 50mL of waste water containing nitrite and sulfite, wherein the concentration of nitrite is 10ppm, and the concentration of sulfite is 18.2ppm. Irradiate with a 500W xenon lamp, and the illumination time is 4.0h. The conversion rates of nitrite and sulfite were measured at 0.00h, 1.00h, 2.00h, 3.00h, and 4.00h of light respectively.

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Abstract

The invention relates to a novel photocatalyst NiGa2O4 / AQ / MoO3 as well as a preparation method and application thereof, and belongs to the technical field of a photocatalyst. A hydrothermal method isused for preparing NiGa2O4 / AQ / MoO3; nanometer NiGa2O4 / AQ and nanometer MoO3 are added into absolute ethyl alcohol; after ultrasonic dispersion, obtained suspension liquid is heated and boiled to the boiling state, and is then subjected to constant temperature treatment for 30 min; after the filtering, obtained filtered materials are dried for 8.0 h to obtain powder; the powder is ground to obtainNiGa2O4 / AQ / MoO3. The prepared NiGa2O4 / AQ / MoO3 composite material shows efficient and stable photocatalysis activity in the nitrite and sulphite conversion process; wide application prospects are realized in nitrite and sulphite waste water treatment.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to a novel photocatalyst NiGa 2 o 4 / AQ / MoO 3 And its preparation method and application. Background technique [0002] As food additives, nitrite and sulfite are widely used in various fields of food processing. However, nitrite is toxic to a certain extent. Wastewater containing excess nitrite discharged into the water body will cause metabolic dysfunction and decreased immunity of aquatic organisms, which will lead to disease and even death. The discharge of wastewater containing excessive sulfites into water bodies will seriously damage the nervous system and respiratory system of aquatic animals. Therefore, the removal of nitrite and sulfite in industrial wastewater is very important to maintain a balanced and stable aquatic ecosystem. The photocatalytic technology with semiconductor materials as the core provides us with a new idea of ​​ideal pollution control. Ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34B01J23/887C01G53/00B82Y40/00C01G39/02
CPCB01J23/8874B01J31/34B01J35/004B82Y40/00C01G39/02C01G53/006C01P2002/80C01P2004/03C01P2006/40
Inventor 宋有涛马雪王君王春权
Owner LIAONING UNIVERSITY
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