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A Green Synthesis Method of Nano-palladium Carboxymethyl Cellulose Composite

A technology of carboxymethyl cellulose and green synthesis, applied in the direction of nanotechnology, etc., to achieve the effects of easy operation, good stability and narrow particle size distribution

Inactive Publication Date: 2017-03-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is green, energy-saving and environmentally friendly, and there is no relevant report on this aspect at present

Method used

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  • A Green Synthesis Method of Nano-palladium Carboxymethyl Cellulose Composite
  • A Green Synthesis Method of Nano-palladium Carboxymethyl Cellulose Composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The green synthetic method of a kind of nano palladium-carboxymethyl cellulose composite of the present embodiment, its specific steps are as follows:

[0021] (1) Take carboxymethyl cellulose solution and palladium chloride solution and mix them evenly in a beaker. The palladium chloride concentration in the mixture is 10 -2 mol / L, the mass percentage concentration of carboxymethyl cellulose is 0.2%,

[0022] (2) Use 0.1mol L -1 Sodium hydroxide solution regulates the pH of mixed solution to be 6.0;

[0023] (3) Place the beaker in a constant temperature water bath at a constant temperature of 80°C and heat for 30 minutes to obtain the nano-palladium-carboxymethyl cellulose composite.

Embodiment 2

[0025] The green synthetic method of a kind of nano palladium-carboxymethyl cellulose composite of the present embodiment, its specific steps are as follows:

[0026] (1) Take carboxymethyl cellulose solution and palladium chloride solution and mix them evenly in a beaker. The palladium chloride concentration in the mixture is 10 -4 mol / L, the mass percentage concentration of carboxymethyl cellulose is 2%,

[0027] (2) Use 1mol L -1 Sodium hydroxide solution regulates the pH of mixed solution to be 8.0;

[0028] (3) Place the beaker in a constant temperature water bath at a constant temperature of 40°C and heat for 30 minutes to obtain the nano-palladium-carboxymethyl cellulose composite.

Embodiment 3

[0030] The green synthetic method of a kind of nano palladium-carboxymethyl cellulose composite of the present embodiment, its specific steps are as follows:

[0031] (1) Take carboxymethyl cellulose solution and palladium chloride solution and mix them evenly in a beaker. The palladium chloride concentration in the mixture is 10 -2 mol / L, the mass percent concentration of carboxymethyl cellulose is 0.1%,

[0032] (2) Use 0.1mol L -1 Sodium hydroxide solution regulates the pH of mixed solution to be 5.0;

[0033] (3) Place the beaker in a constant temperature water bath at a constant temperature of 80°C and heat for 10 minutes to obtain the nano-palladium-carboxymethyl cellulose composite.

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Abstract

The invention relates to a nano-palladium and carboxymethyl cellulose compound environment-friendly synthetic method which includes the following steps that 1, a carboxymethyl cellulose solution and a palladium chloride are obtained and evenly mixed in a beaker, and then a mixed solution is obtained; 2, the pH value of the mixed solution in the step 1 is adjusted through a sodium hydroxide solution; 3, the beaker is placed in a constant-temperature water bath kettle and heated at constant temperature, and nano-palladium particles can be obtained. The nano-palladium particles prepared through the method are small in particle size, good in dispersity, uniform in shape, narrow in particle size distribution, low in agglomeration degree and high in product repeatability, later industrial application is facilitated, and the method meets the requirements of green chemistry which is advocated.

Description

technical field [0001] The invention belongs to the technical field of metal nanomaterial preparation, and more specifically, the invention relates to a green synthesis method of nano palladium-carboxymethyl cellulose composite. Background technique [0002] Nano-Pd has high catalytic activity and selectivity, and the reaction conditions are mild, and is widely used as a catalyst for various organic reactions. Cellulose is the most widely distributed and most abundant polysaccharide in nature. [0003] At present, the methods for preparing nano-palladium mainly include physical vapor phase evaporation condensation method, sputtering method, laser high temperature combustion method, mechanical grinding method, electrochemical method, liquid phase chemical reduction method and light induction method. Among them, the liquid-phase chemical reduction method has become the main method for preparing nano-palladium at low cost because of its simple equipment, convenient operation, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 李刚刘慧宏李伟杨峰
Owner WUHAN TEXTILE UNIV