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A kind of mpg-c3n4/bi0.9nd0.1vo4 composite photocatalyst and its preparation method and application

A mpg-c3n4, composite light technology, applied in the direction of light water/sewage treatment, energy waste water treatment, etc., can solve the problem that the composite photocatalyst work has not been reported yet, and achieve good application prospects, mild reaction conditions, and improve efficiency.

Active Publication Date: 2018-05-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] To date, the preparation of mpg-C 3 N 4 / Bi 0.9 Nd 0.1 VO 4 The work of composite photocatalysts has not been reported yet, and there are no patents and literature reports on the preparation of mpg-C 3 N 4 / Bi 0.9 Nd 0.1 VO 4 composite photocatalyst

Method used

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  • A kind of mpg-c3n4/bi0.9nd0.1vo4 composite photocatalyst and its preparation method and application
  • A kind of mpg-c3n4/bi0.9nd0.1vo4 composite photocatalyst and its preparation method and application
  • A kind of mpg-c3n4/bi0.9nd0.1vo4 composite photocatalyst and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0036] Step 1: the concentration is 2.12mol / L the melamine aqueous solution and the nanometer SiO that concentration is 0.83mol / L 2 The aqueous solution was mixed and stirred evenly according to the volume ratio of 3:2, ultrasonically dispersed for 1 hour, and then put into an oven at 80°C to dry to obtain a white solid, which was ground finely and put into a crucible. 2 In the atmosphere furnace, the heating rate was increased to 550 °C for 4 hours at a heating rate of 2.5 °C / min for calcination to obtain a light yellow powder, and then 4 mol / L NH 4 HF 2 Corrosion with aqueous solution to remove SiO in light yellow powder 2 template, and finally washed and dried to obtain mpg-C 3 N 4 Powder;

[0037] Step 2: Convert mpg-C 3 N 4 Add the powder into 5mL ethanol, and disperse ultrasonically for 2 hours to obtain mpg-C 3 N 4 Alcoholic solution; NH 4 VO 3 Dissolve in deionized water at 90°C, heat and stir at 100°C for 20min to obtain NH 4 VO 3 NH with a concentration o...

Embodiment 2

[0043] Step 1: the concentration is 2.12mol / L the melamine aqueous solution and the nanometer SiO that concentration is 0.83mol / L 2 The aqueous solution was mixed and stirred evenly according to the volume ratio of 3:2, ultrasonically dispersed for 1 hour, and then put into an oven at 80°C to dry to obtain a white solid, which was ground finely and put into a crucible. 2 In the atmosphere furnace, the heating rate was increased to 550 °C for 4 hours at a heating rate of 2.5 °C / min for calcination to obtain a light yellow powder, and then 4 mol / L NH 4 HF 2 Corrosion with aqueous solution to remove SiO in light yellow powder 2 template, and finally washed and dried to obtain mpg-C 3 N 4 Powder;

[0044] Step 2: Convert mpg-C 3 N 4 Add the powder into 5mL ethanol, and disperse ultrasonically for 2 hours to obtain mpg-C 3 N 4 Alcoholic solution; NH 4 VO 3 Dissolve in deionized water at 90°C, heat and stir at 100°C for 20min to obtain NH 4 VO 3 NH with a concentration o...

Embodiment 3

[0050] Step 1: the concentration is 2.12mol / L the melamine aqueous solution and the nanometer SiO that concentration is 0.83mol / L 2 The aqueous solution was mixed and stirred evenly according to the volume ratio of 3:2, ultrasonically dispersed for 1 hour, and then put into an oven at 80°C to dry to obtain a white solid, which was ground finely and put into a crucible.2 In the atmosphere furnace, the heating rate was increased to 550 °C for 4 hours at a heating rate of 2.5 °C / min for calcination to obtain a light yellow powder, and then 4 mol / L NH 4 HF 2 Corrosion with aqueous solution to remove SiO in light yellow powder 2 template, and finally washed and dried to obtain mpg-C 3 N 4 Powder;

[0051] Step 2: Convert mpg-C 3 N 4 Add the powder into 5mL ethanol, and disperse ultrasonically for 2 hours to obtain mpg-C 3 N 4 Alcoholic solution; NH 4 VO 3 Dissolve in deionized water at 90°C, heat and stir at 100°C for 20min to obtain NH 4 VO 3 NH with a concentration of ...

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Abstract

The invention discloses an mpg-C3N4 / Bi0.9Nd0.1VO4 composite photocatalyst and its preparation method and application. The mpg-C3N4 powder is prepared first, and then the ethanol dispersion of the mpg-C3N4 is added to an ammonium metavanadate aqueous solution to obtain Liquid A; add neodymium nitrate hexahydrate to an aqueous solution of bismuth nitrate pentahydrate to obtain liquid B; then add liquid A to liquid B to obtain a reaction precursor, and prepare mpg‑C3N4 / Bi0.9Nd0.1VO4 composite by microwave hydrothermal method catalyst of light. The present invention synthesizes mg-C3N4 / Bi0.9Nd0.1VO4 composite photocatalyst in one step, and its process is simple, simple to operate, reaction time is short, reaction condition is mild, and the synthesized mpg-C3N4 / Bi0.9Nd0.1VO4 composite photocatalyst has various forms appearance, and has high photocatalytic activity, which greatly improves the catalytic efficiency of pure phase BiVO4, and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of functional materials, in particular to a mpg-C 3 N 4 / Bi 0.9 Nd 0.1 VO 4 Composite photocatalyst and its preparation method and application. Background technique [0002] At present, water pollution is becoming more and more serious, and it has reached the point where it threatens the survival of human society. Conventional water treatment methods, such as biochemical methods, adsorption methods, and coagulation-sedimentation methods, can partially remove organic pollutants, but have very poor effects on refractory organic substances, and often cause secondary pollution. Compared with these methods, semiconductor photocatalysis technology can completely degrade organic matter into non-toxic inorganic small molecules, with excellent effect, and the cost is low with sunlight as the driving force, which has obvious advantages. Therefore, semiconductor photocatalysis is a very potential sewage treatment technolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24A62D3/17C02F1/30
CPCY02W10/37
Inventor 谈国强刘婷罗洋洋董国华任慧君夏傲王通
Owner SHAANXI UNIV OF SCI & TECH
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