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Preparation of Pd nano particle

A technology of palladium nanoparticles and particles, which is applied in the field of preparation of palladium nanoparticles to achieve the effects of no energy consumption, good stability and short reaction time

Inactive Publication Date: 2008-10-08
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no green chemistry method has been reported to synthesize palladium nanoparticles

Method used

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  • Preparation of Pd nano particle
  • Preparation of Pd nano particle

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Experimental program
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Embodiment 1

[0011] Embodiment 1. Preparation of palladium nanoparticles

[0012] 0.3mmol H 2 PdCl 4 and 9 mmol of glucose were dissolved in 30 mL of distilled water, and at normal temperature and pressure, 1 mol·L -1 Sodium hydroxide aqueous solution until the pH value of the solution reaches 7-8, at this time the color of the reaction system changes from yellow to red, indicating the formation of palladium nanoparticles. Product is through XRD analysis, is the palladium of pure face-centered cubic phase (see figure 1 ). The positions and intensities of the peaks matched literature values ​​[Ref: JCPDS No. 05-0681]. Through the analysis of TEM, the diameter of the palladium nanoparticles of the present invention is about 3~4 nanometers (see figure 2 ).

Embodiment 2

[0013] Embodiment 2. Preparation of palladium nanoparticles

[0014] 0.3mmol H 2 PdCl 4 and 12mmol glucose were dissolved in 15mL distilled water, and 0.5mol L was added dropwise -1 Sodium hydroxide aqueous solution, other conditions of preparation are with embodiment 1. A product similar in crystal structure and morphology to Example 1 was obtained.

Embodiment 3

[0015] Embodiment 3. Preparation of palladium nanoparticles

[0016] 0.3mmol H 2 PdCl 4 and 15mmol glucose were dissolved in 60mL distilled water, and 2.0mol L was added dropwise -1 Sodium hydroxide aqueous solution, other conditions of preparation are with embodiment 1. A product similar in crystal structure and morphology to Example 1 was obtained.

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Abstract

A preparation method of palladium nanoparticles dissolves H2PdCl4 and glucose in water, the amount ratio of the H2PdCl4, glucose and water is that: H2PdCl4: glucose: water is equal to 1mmol: 30 to 100mmol: 50 to 200ml, sodium hydroxide water solution is dropped till the pH value of the reaction solution achieves 7 to 8 under the stirring situation, the color of the reaction system turns red from yellow, thus obtaining the palladium nanoparticles with the pure face-centered cubic phase and the diameter of the particles of 3 to 4 nanometers. The preparation method of the palladium nanoparticles of the invention is carried out under the normal temperature and the normal pressure, which is simple and safe, the reaction time is short, the preparation method almost has no power consumption, the used reagent is environment-friendly and cheap; furthermore, as the invention adopts the glucose as a reducing agent and a stabilizer, the obtained palladium nanoparticles have biocompatibility.

Description

technical field [0001] The invention relates to a preparation method of palladium nanoparticles. Specifically, palladium nanoparticles were prepared using green chemistry. Background technique [0002] As the global environmental and ecological problems become increasingly prominent, people pay more and more attention to the prevention and control of pollution. Green chemistry, also known as environmentally friendly chemistry, aims to reduce or eliminate the use and generation of pollutants in the design, production and application of chemical products [see: P. Anastas, J. Warner, Green Chemistry: Theory and Practice, Oxford University Press: New York, 1998]. In recent years, the development of nanotechnology has enabled people to synthesize many nanomaterials with excellent properties. Due to the special structure of nanomaterials, nanomaterials exhibit unique functions that non-nanomaterials do not possess, so it has broad application prospects and huge social and econo...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 朱俊杰徐朗吴兴才
Owner NANJING UNIV
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