Investigation of charge-transfer between a 4-mercaptobenzoic acid monolayer and TiO2 nanoparticles under high pressure using surface-enhanced Raman scattering

We investigated the CT process between a 4-mercaptobenzoic acid (4-MBA) monolayer and TiO2 NPs under high pressure using surface-enhanced Raman scattering (SERS). Employing the CT enhancement mechanism of semiconductors, we explore the CT process and explain how the pressure affects the process in the 4-MBA@TiO2 system.