Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 2, Issue 30, Pages 11885-11890Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta02155j
Keywords
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Funding
- National Natural Science Foundation of China [21173028]
- Program for Liaoning Excellent Talents in University [LR2012042]
- Science and Technology Research Project of Liaoning Provincial Education Department [L2013464]
- Scientific Research Foundation for the Doctor of Liaoning Province [20131004]
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A high performance Pd/C catalyst (Pd/C-PC) was successfully prepared by simple incipient wetness impregnation followed by the process of dry plasma reduction and calcination. Oxygen-containing group surface-fuctionalized activated carbon was used to absorb the palladium precursor PdCl42-, and small sized (1.92 +/- 0.75 nm) Pd nanoparticles were formed in Pd/C-PC, which were smaller than those prepared by low pressure cold plasma (4.0-4.5 nm). The results of XRD, XPS, TPR and TEM showed that dry plasma with calcination could completely remove the residual Cl ions and obtain predominantly metallic Pd nanoparticles without aggregation. The dry plasma prepared Pd/C-PC catalyst gave excellent catalytic activity for CO oxidation, and the TOF value for 5 wt% Pd/C-PC was about 6.1 times as that for 6 wt% Pd/graphene prepared by the conventional impregnation and hydrogen reduction method. The high performance was attributed to the smaller size and predominantly metallic Pd nanoparticles.
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