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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
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A New Defect Pyrochlore Oxide Sn1.06Nb2O5.59F0.97: Synthesis, Noble Metal Hybrids, and Photocatalytic Applications
Xiaoyang Pan1, Chao Li2, Jing Zheng1
1Key Laboratory of Design and Assembly of Functional Nanostructures & Fujian Provincial Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou 350002 , China.
Inorganic Chemistry
|May 19, 2018
Summary
This study introduces a clean method to create supported ultrafine noble metal nanoparticles using a novel pyrochlore oxide, SnNbOF. These noble metal-SnNbOF hybrids show promise for ethylene oxidation and CO2 reduction catalysis.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
Background:
- Noble metal nanoparticles are effective heterogeneous catalysts.
- Organic stabilizing agents often hinder the catalytic activity of noble metal nanoparticles.
- Developing clean synthesis methods for supported noble metal nanoparticles is crucial.
Purpose of the Study:
- To develop a facile, clean, and effective method for synthesizing supported ultrafine noble metal nanoparticles.
- To utilize the reductive properties of a new pyrochlore oxide, SnNbOF, for nanoparticle synthesis.
- To investigate the photocatalytic properties of the resulting noble metal-SnNbOF hybrids.
Main Methods:
- Synthesis of supported ultrafine gold (Au), palladium (Pd), and platinum (Pt) nanoparticles on SnNbOF.
- Utilizing the inherent reductive property of SnNbOF, avoiding organic stabilizers and reducing agents.
- Employing the atomic cavities and ion-exchange properties of SnNbOF for atomic silver (Ag) dispersion.
Main Results:
- Homogeneous distribution of ultrafine Au, Pd, and Pt nanoparticles/clusters on the SnNbOF surface.
- Successful synthesis of atomically dispersed Ag within the SnNbOF framework.
- Formation of noble metal-SnNbOF hybrids in a single step at room temperature without foreign agents.
- Demonstrated promising photocatalytic activity for ethylene oxidation and CO2 reduction.
Conclusions:
- A novel, clean, and efficient method for preparing supported noble metal nanoparticles using SnNbOF has been established.
- The synthesized noble metal-SnNbOF hybrids exhibit excellent photocatalytic performance.
- This approach offers a sustainable alternative for catalyst preparation, avoiding detrimental organic stabilizers.
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