Shell-localization of light energy in Au@Pt NPs: A photoelectron and ultrafast transient absorption spectroscopy study

Christian Engelbrekt, Matt Law, Dmitry Fishman, Vartkess A. Apkarin, Jingdong Zhang

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Abstract

Harnessing sunlight and storing the energy in chemical bonds is an important element in the transition towards green and sustainable technologies. Solar fuel production requires photocatalysts that (1) absorb large parts of the solar spectrum, (2) generate charges with significant lifetimes and appropriate energies, (3) catalyze relevant chemical transformations from abundant, low-energy starting materials, and (4) are stable under operating conditions. A new avenue within solar fuels involve plasmonic nanocatalysts. These materials have
tunable optical properties, exciting catalytic behavior, and can be more stable under operating conditions. One promising plasmonic nanocatalyst architecture consists of dispersed Pt atoms on plasmonic gold nanoparticles. Here, we study the surface structure and ultrafast dynamics in such Au@Pt core-shell NPs using photoelectron spectroscopy, and femtosecond transient absorption pectroscopy, in view of their potential as plasmonic photocatalysts.
Original languageEnglish
Publication date2019
Number of pages1
Publication statusPublished - 2019
EventThe Danish Chemical Society Annual Meeting 2019 - H.C. Ørsted Institutet, Copenhagen, Denmark
Duration: 27 Jun 201927 Jun 2019

Conference

ConferenceThe Danish Chemical Society Annual Meeting 2019
LocationH.C. Ørsted Institutet
CountryDenmark
CityCopenhagen
Period27/06/201927/06/2019

Cite this

Engelbrekt, C., Law, M., Fishman, D., Apkarin, V. A., & Zhang, J. (2019). Shell-localization of light energy in Au@Pt NPs: A photoelectron and ultrafast transient absorption spectroscopy study. Poster session presented at The Danish Chemical Society Annual Meeting 2019, Copenhagen, Denmark.