Stability of Seeded Rod Photocatalysts: Atomic Scale View

Eran Aronovitch, Philip Kalisman, Lothar Houben, Lilac Amirav, Maya Bar-Sadan

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The displacement of single atoms may have detrimental effects on the functionality of nanoparticle photocatalysts. Understanding the atomic-scale phenomena is the key to the rational design of photocatalysts to prevent undesired events during their synthesis and operation. Here, we used high resolution TEM to study such phenomena within seeded rods of CdSe in CdS, mounted with bimetallic particles of Au and Pd. We show the mobility of Pd atoms during deposition and photocatalysis and relate that to photocatalyst degradation processes that limit overall photocatalyst efficiency. We also show the advantage of the bimetallic composition and the specific internal rearrangement of the two metals for better efficiency and stability to provide a more generalized understanding of prospective design principles.

Original languageEnglish
Pages (from-to)1546-1552
Number of pages7
JournalChemistry of Materials
Volume28
Issue number5
DOIs
StatePublished - 8 Mar 2016

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