Novel solid-state synthesis of surfactant- and solvent-free Pd tetrahedron nanocatalysts
Literature Information
Kwangsoo Kim, Jin Gyu Lee, Nahyun Park, Hack-Keun Lee, Shin Wook Kang, Jung-Il Yang, Byeong-Seon An, Kang Hyun Park, Chang Seop Hong
Shape-controlled palladium nanocatalysts with high activity in various catalytic reactions have attracted much attention. However, the reliable synthesis of shape-controlled Pd nanocatalysts in the absence of polymeric surfactants and harmful organic solvents remains a challenging issue. This study is the first to report an automated, reproducible, and reliable solid-state synthesis of surfactant-free tetrahedral-shaped Pd nanocatalysts with high particle dispersion. By using carbon monoxide gas as a capping material for the Pd precursor during synthesis, the morphology of the Pd nanoparticles could be controlled, as revealed by computer simulations. The tetrahedral Pd nanoparticles synthesized on graphene supports exhibited higher catalytic performance for the reduction of 4-nitrophenol than those of spherical Pd nanoparticles on graphene, commercial Pd/C, and PVP stabilized Pd nanocubes on graphene due to their active edge and kink sites with high dispersion and the clean active site surface. In addition, the additional incorporation of magnetic Fe3O4 nanoparticles into the tetrahedral Pd nanoparticle-supported nanocatalysts facilitated the separation of the catalysts by magnetism, making reuse convenient.
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DOI: 10.1039/A608153C
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Journal of Materials Chemistry A

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment










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