Abstract
• Pd nanoparticles of Pd/ZnFe 2 O 4 can be uniformly deposited on porous ZnFe 2 O 4 . • The styrene can be completely restored into ethylbenzene by Pd/ZnFe 2 O 4 in 80 min. • For Pd/ZnFe 2 O 4 photocatalysts, no byproducts or derivatives are formed. The catalytic hydrogenation of olefins is common and important in the chemical industry. In this work, the uniform Pd nanoparticles (∼2 nm) are anchored on the porous ZnFe 2 O 4 particles to develop the Pd/ZnFe 2 O 4 nanocomposites. We applied the Pd/ZnFe 2 O 4 hybrids into a model reaction, namely the hydrogenation of styrene. The styrene can be completely restored into ethylbenzene over Pd/ZnFe 2 O 4 within 80 min. Meanwhile, no byproducts or derivatives are formed during the whole photocatalytic process. Above photocatalytic performance is ascribed to the synergistic interaction of porous ZnFe 2 O 4 and highly dispersive Pd NPs. In addition, the kinetics study with an R-square value of more than 0.99 showed that the hydrogenation of styrene matches the zero-order kinetics model well.
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