Palladium, silver-palladium, and Palladium-Platinum nanomaterials: maneuvering shape, composition, and structure for catalytic applications

• Grant number: 13/05709-8
• Support type: Scholarships in Brazil - Post-Doctorate
• Effective date (Start): November 01, 2013
• Effective date (End): October 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Pedro Henrique Cury Camargo
• Grantee: Jiale Wang
• Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This proposal aims at developing simple, effective, versatile, and environmentally friendly strategies for the synthesis of metallic and bimetallic nanomaterials with controllable and well-defined sizes, compositions, shapes and structures (solid vs. hollow interiors). In particular, we will focus on 2 systems: i) Pd nanocrystals having controllable shapes and sizes, i.e. cuboctahedra, cubes, octahedra, and plates; and ii) Ag-Pd and Pd-Pt bimetallic and/or hollow nanomaterials with defined shapes, sizes, compositions and structures. Following the synthesis of these materials, we will turn our attention to their application in areas that include heterogeneous catalysis (Suzuki coupling), electrocatalysis (oxygen reduction, ethanol oxidation, and formic acid oxidation reactions) and plasmonics (Surface-enhanced Raman scattering). In addition to the comparison of their performance in these applications relative to conventionally employed nanomaterials, we are especially interested in the systematic correlation between their properties and the physical/chemical parameters such as composition, structure, shape, electronic structure, and modifications of the active sites. The overall goal of this project is to employ simple yet precise chemical strategies as a platform to generate advanced nanomaterials capable of overcoming current challenges and display enhanced activities in areas that include the catalysis and electrocatalysis.

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

WANG, JIALE; ALVES, TIAGO V.; TRINDADE, FABIANE J.; DE AQUINO, CAROLINE B.; PIERETTI, JOANA C.; DOMINGUES, SERGIO H.; ANDO, ROMULO A.; ORNELLAS, FERNANDO R.; CAMARGO, PEDRO H. C. Theoretical Design and Experimental Realization of Quasi Single Electron Enhancement in Plasmonic Catalysis. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v. 54, n. 48, p. 14427-14431, NOV 23 2015. Web of Science Citations: 2.

WANG, JIALE; TRINDADE, FABIANE J.; DE AQUINO, CAROLINE B.; PIERETTI, JOANA C.; DOMINGUES, SERGIO H.; ANDO, ROMULO A.; CAMARGO, PEDRO H. C. Probing the Catalytic Activity of Reduced Graphene Oxide Decorated with Au Nanoparticles Triggered by Visible Light. CHEMISTRY-A EUROPEAN JOURNAL, v. 21, n. 27, p. 9889-9894, JUN 26 2015. Web of Science Citations: 9.

WANG, JIALE; ANDO, ROMULO A.; CAMARGO, PEDRO H. C. Controlling the Selectivity of the Surface Plasmon Resonance Mediated Oxidation of p-Aminothiophenol on Au Nanoparticles by Charge Transfer from UV-excited TiO2. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v. 54, n. 23, p. 6909-6912, JUN 1 2015. Web of Science Citations: 51.

WANG, JIALE; CHEN, PEIXUAN; CAMARGO, PEDRO H. C. Surface diffusion versus atomic addition: using temperature to maneuver the morphology of Pd nanostructures by seeded-growth. JOURNAL OF NANOPARTICLE RESEARCH, v. 16, n. 12 DEC 2014. Web of Science Citations: 1.

WANG, J. L.; ANDO, ROMULO A.; CAMARGO, PEDRO H. C. Investigating the Plasmon-Mediated Catalytic Activity of AgAu Nanoparticles as a Function of Composition: Are Two Metals Better than One?. ACS CATALYSIS, v. 4, n. 11, p. 3815-3819, NOV 2014. Web of Science Citations: 36.