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Heterogeneous Catalysis

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

Published on: December 6, 2021

An ultra-low Pd loading nanocatalyst with efficient catalytic activity.

Yunxia Jin¹, Jiangbo Xi, Zheye Zhang

¹Laboratory for Large-format Battery Materials and Systems, Advanced Optoelectronic/Energy Materials and Inter-face Chemistry Joint Laboratory, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China. chmsamuel@mail.hust.edu.cn.

|March 5, 2015

Summary

This study introduces an ultra-low palladium (Pd) loading nanocatalyst on zinc oxide (ZnO) nanorods, significantly enhancing photocatalytic activity. This novel Pd-ZnO hybrid nanocatalyst efficiently converts 4-nitrophenol to 4-aminophenol.

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Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production

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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

Published on: August 18, 2020

Area of Science:

Nanotechnology
Materials Science
Catalysis

Background:

Developing efficient nanocatalysts is crucial for various chemical transformations.
Palladium (Pd) and zinc oxide (ZnO) are key components in catalytic systems.
Controlling nanostructure morphology impacts catalytic performance.

Purpose of the Study:

To synthesize an ultra-low palladium loading nanocatalyst on ZnO nanorods.
To investigate the effect of Pd nanocluster morphology on catalytic activity.
To demonstrate the photocatalytic efficiency of the Pd-ZnO hybrid nanocatalyst.

Main Methods:

Photochemical reduction and aqueous chemical growth for catalyst synthesis.
Modification of Pd nanocluster structures on ZnO nanorod surfaces.
Utilizing the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as a model reaction.

Main Results:

Achieved significant enhancement in photocatalytic properties with trace Pd loading (0.05 at%).
Demonstrated the catalytic activity of the Pd-ZnO hybrid nanocatalyst in 4-NP reduction.
Established a correlation between nanoconfigured structure and catalytic performance.

Conclusions:

Ultra-low Pd loading on ZnO nanorods yields highly efficient photocatalytic activity.
The Pd-ZnO hybrid nanocatalyst shows promise for chemical synthesis and catalysis.
Understanding structure-performance relationships is key for designing advanced nanocatalysts.