Preparation method of nanometer particle-photosensitive porous coordination polymer composition material photocatalyst

A nanoparticle, porous coordination technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of size and shape of nanoparticles and composite materials Controllability, fewer types of visible light hydrogen production systems, etc., to achieve the effect of uniform size, regular shape, and maintain catalytic activity

Inactive Publication Date: 2016-12-21
NANJING TECH UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the above-reported method for preparing nanoparticle@photosensitive PCPs composites still has its limitations, such as the aggregation of nanoparticles, the limitation of the type and composition of nanoparticles, and the uncontrollability of the size and morphology of nanoparticles and composites.
In addition, there are still relatively few types of nanoparticle@photosensitized PCPs composite photocatalysts used in visible light hydrogen production systems

Method used

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  • Preparation method of nanometer particle-photosensitive porous coordination polymer composition material photocatalyst
  • Preparation method of nanometer particle-photosensitive porous coordination polymer composition material photocatalyst
  • Preparation method of nanometer particle-photosensitive porous coordination polymer composition material photocatalyst

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example 1

[0024] Zirconium tetrachloride (20mg), biphenyl dicarboxylic acid (16.1mg), containing [Ru(bpy) 3 ] 2+ Dicarboxylic acid (10mg) was dissolved in dimethylformamide solvent (3ml), then the dimethylformamide solution (120μl) of Pt nanoparticles modified by PVP and acetic acid regulator (165μl) were added, after mixing evenly, static Set, carry out hydrothermal reaction at 100°C, and the reaction time is 24 hours. After the reaction, the precipitate was collected by centrifugation, washed three times with dimethylformamide and methanol as solvents, and dried in vacuum to obtain the composite material Pt@RuUIO67-1. figure 1 , figure 2 a and Figure 5 The TEM, HAADF-STEM, EDX-mapping, SEM and XRD images show that the PVP-modified Pt nanoparticles can be successfully encapsulated in the photosensitized PCPs (RuUIO67) uniformly and without aggregation by in-situ encapsulation.

example 2

[0026] Zirconium tetrachloride (20mg), biphenyl dicarboxylic acid (14.6mg), containing [Ru(bpy) 3 ] 2+ Dicarboxylic acid (14mg) was dissolved in dimethylformamide solvent (3ml), then the dimethylformamide solution (120μl) and acetic acid regulator (165μl) of PVP modified Pt nanoparticles were added, after mixing evenly, let stand , The hydrothermal reaction was carried out at 100°C, and the reaction time was 24 hours. After the reaction, the precipitate was collected by centrifugation, washed three times with dimethylformamide and methanol as solvents, and dried in vacuum to obtain the composite material Pt@RuUIO67-2. figure 2 SEM and Figure 5 The XRD patterns of the obtained Pt@RuUIO67 composites with uniform structure can still be obtained by increasing the proportion of photosensitive metal-organic ligand units.

example 3

[0028] Zirconium tetrachloride (20mg), biphenyl dicarboxylic acid (16.1mg), containing [Ru (bpy) 3 ] 2+ Dicarboxylic acid (10 mg) was dissolved in dimethylformamide solvent (3 ml), followed by the addition of PVP-modified Pd 3 P 2 S 8 Dimethylformamide solution of nanoparticles (300 μl) and acetic acid regulator (165 μl) were mixed evenly, left to stand, and hydrothermal reaction was carried out at 100° C., and the reaction time was 24 hours. After the reaction, the precipitate was collected by centrifugation, washed three times with dimethylformamide and methanol as solvents, and dried in vacuum to obtain the composite material Pd 3 P 2 S 8 @RuUIO67-1. image 3 , Figure 4a and Figure 5 TEM, HAADF-STEM, EDX-mapping, SEM and XRD of the XRD patterns of PVP-modified Pd in ​​addition to Pt nanoparticles 3 P 2 S 8 Nanoparticles can also be used as co-catalysts to be successfully encapsulated in RuUIO67 uniformly and without aggregation through the method proposed by th...

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Abstract

The invention discloses a preparation method of a nanometer particle-photosensitive porous coordination polymer composition material photocatalyst. The preparation method is characterized in that a surface active agent polyvinyl pyrrolidone (PVP) is chosen to modify nanometer particles, the effect of a lattice parameter difference between the nanometer particles and a photosensitive porous coordination polymer is weakened, and the PVP modified nanometer particles are packed in a photosensitive porous coordination polymer structure through an in-situ self-assembly method. The successfully-prepared novel nanometer particle-photosensitive porous coordination polymer composition material photocatalyst can be applied to a visible light catalysis hydrogen generation system. The preparation method has certain universality, can be used for pack the nanometer particles of special structures in the photosensitive porous coordination polymer, widens application of the photosensitive porous coordination polymer, avoids gathering of the nanometer particles, controls the size and shape uniformity of a nanometer particle-photosensitive porous coordination polymer composition material and keeps the catalytic activity.

Description

technical field [0001] The invention belongs to the field of photosensitized porous complex materials, and relates to a method for preparing nanoparticle@photosensitive porous coordination polymer composite material photocatalyst. Background technique [0002] Porous Coordination Polymers (PCPs), also often referred to as metal-organic frameworks (MOFs), are a class of hybrid materials constructed by metal / metal clusters and organic ligand units with specific structures. Due to the advantages of diverse species, tunable channels, easy functionalization of structure, and large specific surface area, PCPs have shown broad application prospects in the fields of gas storage, separation of chemical species, catalysis, and sensors. According to the tunable nature of the organic ligand structure of PCPs, by introducing different organic or metal-organic light-emitting ligand units, PCPs can be used as an ideal platform for the development of visible-light photosensitized PCPs. Vis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C01B3/02
CPCB01J31/22B01J35/004B01J2531/821B01J2531/827C01B3/02
Inventor 殷成蓉霍峰蔚张美萱张伟娜徐亚超黄维
Owner NANJING TECH UNIV
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