Unleashing Hydrogen Interaction on Tin-Based Nanostructured Surfaces (HINTS)

• Grant number: 24/02337-7
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2024
• End date: May 31, 2026
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
• Principal Investigator: Valmor Roberto Mastelaro
• Grantee: Valmor Roberto Mastelaro
• Principal researcher abroad: Carla Bittencourt
• Institution abroad: Université de Mons (UMONS), Belgium
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated researchers: Luís Fernando da Silva ; Maria Inês Basso Bernardi
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID

Abstract

The main goal os this proposal is to understand the effect of Pd loading on the gas-surface interaction of nanostructured SnS2. This two-year collaborative project will characterize the surface composition and electronic structure of Pd-doped SnS2 nanomaterials under operandoconditions, i.e., under different temperatures and during exposure to hydrogen. The role ofhaving or lacking adsorbed water at the nanomaterial surface will be evaluated. By identifying the intermediate species adsorbed together with the measurement of the electrical conductanceof the nanomaterial, we expect to unveil the surface chemistry-performance correlation in thedetection of hydrogen with Pd-doped SnS2. The research will use near atmospheric pressure Xrayphotoelectron spectroscopy (NAP-XPS) supported by Density Functional Theory (DFT)calculations. NAP-XPS is a unique technique capable of conducting this analysis underrealistic operating conditions. If time will be available, Pd doped SnP3 nanomaterials will also be studied. (AU)