Charge carrier dynamics and photocatalytic activity of {111} and {100} faceted Ag3PO4 particles

TitleCharge carrier dynamics and photocatalytic activity of {111} and {100} faceted Ag3PO4 particles
Publication TypeJournal Article
Year of Publication2020
AuthorsR. Sinha, D. Friedrich, G. Zafeiropoulos, E. Zoethout, M. Parente, M.CM van de Sanden, A. Bieberle
JournalJournal of Chemical Physics, The
Volume152
Issue24
Pagination244710
Date Published06/2020
Abstract

Silver orthophosphate is a highly promising visible light photocatalyst with high quantum yield for solar driven water oxidation. Recently, the performance of this material has been further enhanced using facet-controlled synthesis. The tetrahedral particles with {111} exposed facets demonstrate higher photocatalytic performance than the cubic particles with {100} exposed facets. However, the reason behind this large difference in photocatalytic performance is still not understood. In this work, we study the free charge carrier dynamics, such as mobility, lifetime, and diffusion lengths, for the {111}-faceted tetrahedral and the {100}-faceted cubic particles using time-resolved microwave conductivity measurements. An order of magnitude higher charge carrier mobility and diffusion length are found for the tetrahedral particles as compared to the cubic particles. The differences in crystal structure, surface composition, and optical properties are investigated in order to understand how these properties impact the charge carrier dynamics and the photocatalytic performance of differently faceted particles.

DOI10.1063/5.0006865
Division

MaSF

Department

EMI

PID

e4a43bb8f1af2adfce484f8cd6672b8a

Alternate TitleJ. Chem. Phys.

Go back one page.