Improving the catalytic activity of semiconductor nanocrystals through selective domain etching

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dc.contributor.author Khon, Elena
dc.contributor.author Lambright, Kelly
dc.contributor.author Khnayzer, Rony S.
dc.contributor.author Moroz, Pavel
dc.contributor.author Perera, Dimuthu
dc.contributor.author Butaeva, Evgeniia
dc.contributor.author Lambright, Scott L.
dc.contributor.author Castellano, Felix N.
dc.contributor.author Zamkov, Mikhail
dc.date.accessioned 2017-11-03T07:22:25Z
dc.date.available 2017-11-03T07:22:25Z
dc.date.copyright 2013 en_US
dc.identifier.issn 1530-6992 en_US
dc.identifier.uri http://hdl.handle.net/10725/6490
dc.description.abstract Colloidal chemistry offers an assortment of synthetic tools for tuning the shape of semiconductor nanocrystals. While many nanocrystal architectures can be obtained directly via colloidal growth, other nanoparticle morphologies require alternative processing strategies. Here, we show that chemical etching of colloidal nanoparticles can facilitate the realization of nanocrystal shapes that are topologically inaccessible by hot-injection techniques alone. The present methodology is demonstrated by synthesizing a two-component CdSe/CdS nanoparticle dimer, constructed in a way that both CdSe and CdS semiconductor domains are exposed to the external environment. This structural morphology is highly desirable for catalytic applications as it enables both reductive and oxidative reactions to occur simultaneously on dissimilar nanoparticle surfaces. Hydrogen production tests confirmed the improved catalytic activity of CdSe/CdS dimers, which was enhanced 3–4 times upon etching treatment. We expect that the demonstrated application of etching to shaping of colloidal heteronanocrystals can become a common methodology in the synthesis of charge-separating nanocrystals, leading to advanced nanoparticles architectures for applications in areas of photocatalysis, photovoltaics, and light detection en_US
dc.language.iso en en_US
dc.title Improving the catalytic activity of semiconductor nanocrystals through selective domain etching en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SAS en_US
dc.author.idnumber 200501196 en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal Nano Letters en_US
dc.journal.volume 13 en_US
dc.journal.issue 5 en_US
dc.article.pages 2016-2023 en_US
dc.keywords Catalysis en_US
dc.keywords Etching en_US
dc.keywords Nanocrystals en_US
dc.keywords Photovoltaics en_US
dc.keywords Titanium dioxide en_US
dc.identifier.doi http://dx.doi.org/10.1021/nl400715n en_US
dc.identifier.ctation Khon, E., Lambright, K., Khnayzer, R. S., Moroz, P., Perera, D., Butaeva, E., ... & Zamkov, M. (2013). Improving the catalytic activity of semiconductor nanocrystals through selective domain etching. Nano letters, 13(5), 2016-2023. en_US
dc.author.email rony.khnayzer@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://pubs.acs.org/doi/abs/10.1021/nl400715n en_US
dc.orcid.id https://orcid.org/0000-0001-7775-0027 en_US
dc.author.affiliation Lebanese American University en_US

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