A graphitic carbon nitride/silver carbonate/silver bromide ternary composite nano-material, a preparing method thereof and uses of the nano-material

A ternary composite and nanomaterial technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor stability, restricting development and application, and achieve improved effects and simple production processes Easy to control and high product yield

Inactive Publication Date: 2017-02-08
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its poor stability restricts its development and application. Therefore, the development of high-performance and high-stability Ag 2 CO 3 Photocatalyst is a current research hotspot

Method used

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  • A graphitic carbon nitride/silver carbonate/silver bromide ternary composite nano-material, a preparing method thereof and uses of the nano-material
  • A graphitic carbon nitride/silver carbonate/silver bromide ternary composite nano-material, a preparing method thereof and uses of the nano-material
  • A graphitic carbon nitride/silver carbonate/silver bromide ternary composite nano-material, a preparing method thereof and uses of the nano-material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Add 10 g of urea and melamine mixture (molar ratio 1:1) weighed into the crucible, and then bake in a muffle furnace at 580° C. for 1 h with a heating rate of 5 / min. The synthesized yellow powder was washed several times with deionized water and absolute ethanol, and finally dried under vacuum at 60°C for 12 hours to obtain g-C 3 N 4 Sheet structure; (2) g-C prepared by 10mg (1) 3 N 4 Dissolve in 20mL deionized water and ultrasonically disperse for at least 1h, then add 2mmol AgNO 3 Disperse in 20mL deionized water, and gradually add it dropwise to the above g-C after fully dissolving 3 N 4 The solution was stirred well, and finally 20mL Na 2 CO 3 10H 2 O (0.05M) solution was added dropwise to the above solution and stirred thoroughly for 1 hour, then washed and centrifuged with deionized water and ethanol several times, and dried at 60°C to obtain g-C 3 N 4 / Ag 2 CO 3 sample. (3) 10 mg of g-C prepared in (1) 3 N 4 / Ag 2 CO 3 Disperse the sample in 2...

Embodiment 2

[0028] (1) Add 10 g of urea and melamine mixture (molar ratio 1:0.5) weighed into the crucible, and then bake in a muffle furnace at 400° C. for 4 h with a heating rate of 5 / min. The synthesized yellow powder was washed several times with deionized water and absolute ethanol, and finally dried under vacuum at 60°C for 12 hours to obtain g-C 3 N 4 Sheet structure; (2) g-C prepared by 10mg (1) 3 N 4 Dissolve in 20mL deionized water and ultrasonically disperse for at least 1h, then add 4mmol AgNO 3 Disperse in 20mL deionized water, and gradually add it dropwise to the above g-C after fully dissolving 3 N 4 The solution was stirred well, and finally 40mL NaHCO 3 (0.05M) solution was added dropwise to the above solution and fully stirred for 1 hour, then washed and centrifuged with deionized water and ethanol several times, and dried at 60°C to obtain g-C 3 N 4 / Ag 2 CO 3 sample. (3) 15 mg of g-C prepared in (1) 3 N 4 / Ag 2 CO 3 Disperse the sample in 20mL of deionize...

Embodiment 3

[0030] (1) Add 10 g of urea and melamine mixture (molar ratio 1:6) weighed into the crucible, and then bake in a muffle furnace at 650° C. for 2 h with a heating rate of 5 / min. The synthesized yellow powder was washed several times with deionized water and absolute ethanol, and finally dried under vacuum at 60°C for 12 hours to obtain g-C 3 N 4 Sheet structure; (2) g-C prepared by 10mg (1) 3 N 4 Dissolve in 20mL deionized water and ultrasonically disperse for at least 1h, then add 2mmol AgNO 3 Disperse in 20mL deionized water, and gradually add it dropwise to the above g-C after fully dissolving 3 N 4 The solution was stirred well, and finally 20mL K 2 CO 3 (0.05M) solution was added dropwise to the above solution and fully stirred for 1 hour, then washed and centrifuged with deionized water and ethanol several times, and dried at 60°C to obtain g-C 3 N 4 / Ag 2 CO 3 sample. (3) 20 mg of g-C prepared in (1) 3 N 4 / Ag 2 CO 3 The sample was dispersed into 20mL of d...

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Abstract

A graphitic carbon nitride/silver carbonate/silver bromide ternary composite nano-material, a preparing method thereof and uses of the nano-material are disclosed. Rodlike Ag<2>CO3 and g-C3N4 having a lamellar structure grow together, and AgBr particles are attached to the surface of the Ag<2>CO3. The nano-material comprises 5-30 wt% of the g-C3N4 and 1-8 wt% of the AgBr, with the balance being the Ag<2>CO3. The preparing method includes (1) subjecting urea and melamine to high-temperature solid-phase sintering to obtain a g-C3N4 lamellar structure, (2) synthesizing the g-C3N4 nanosheet, a soluble silver salt and a carbonate or bicarbonate into g-C3N4/Ag<2>CO3 particles through a solution precipitation reaction, and (3) introducing Br<-> to the g-C3N4/Ag<2>CO3 particles. The prepared ternary composite nano-material is high in yield and can be adopted as a photocatalyst.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a carbanitrone / silver carbonate / silver bromide ternary composite nanomaterial, a preparation method and an application thereof. Background technique [0002] Recently, silver-based photocatalysts have received extensive attention and research as an efficient visible-light photocatalyst, such as Ag 2 O, AgX (X = Cl, Br, I), Ag 3 PO 4 and Ag 2 MO 4 (M=Mo, W, Cr), etc. have been proved to have broad application prospects in the fields of water pollution and environmental protection. Recent reports indicate that Ag 2 CO 3 It is a highly efficient visible light photocatalyst with a band gap of 2.46eV, and has high visible light catalytic activity for RhB, MO and MB and other dyes. However, its poor stability restricts its development and application. Therefore, the development of high-performance and high-stability Ag 2 CO 3 Photocatalyst is a research hotspot at present. In ord...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/004
Inventor 唐国钢唐华
Owner ZHENJIANG COLLEGE
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