Plasma-Enabled Ligand Removal for Improved Catalysis: Furfural Conversion on Pd/SiO2

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dc.contributor.authorNguyen, Darien K.
dc.contributor.authorVargheese,Vibin
dc.contributor.authorLiao, Vinson
dc.contributor.authorDimitrakellis, Panagiotis
dc.contributor.authorSourav, Sagar
dc.contributor.authorZheng, Weiqing
dc.contributor.authorVlachos, Dionisios G.
dc.date.accessioned2024-02-05T14:12:25Z
dc.date.available2024-02-05T14:12:25Z
dc.date.issued2023-11-14
dc.descriptionThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, copyright © 2023 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.3c06310. This article will be embargoed until 11/14/2024.
dc.description.abstractA nonthermal, atmospheric He/O2 plasma (NTAP) successfully removed polyvinylpyrrolidone (PVP) from Pd cubic nanoparticles supported on SiO2 quickly and controllably. Transmission electron microscopy (TEM) revealed that the shape and size of Pd nanoparticles remain intact during plasma treatment, unlike mild calcination, which causes sintering and polycrystallinity. Using Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS), we demonstrate the quantitative estimation of the PVP plasma removal rate and control of the nanoparticle synthesis. First-principles calculations of the XPS and CO FTIR spectra elucidate electron transfer from the ligand to the metal and allow for estimates of ligand coverages. Reactivity testing indicated that PVP surface crowding inhibits furfural conversion but does not alter furfural selectivity. Overall, the data demonstrate NTAP as a more efficient method than traditional calcination for organic ligand removal in nanoparticle synthesis.
dc.description.sponsorshipThis work was supported by the Department of Energy’s Office of Energy Efficient and Renewable Energy’s Advanced Manufacturing Office under Award Number DE-EE0007888-8.3. The Delaware Energy Institute gratefully acknowledges the support and partnership of the State of Delaware toward the RAPID projects. The authors are grateful to T. Goculdas and K. Yu for the catalyst preparation and TEM imaging.
dc.identifier.citationNguyen, Darien K., Vibin Vargheese, Vinson Liao, Panagiotis Dimitrakellis, Sagar Sourav, Weiqing Zheng, and Dionisios G. Vlachos. “Plasma-Enabled Ligand Removal for Improved Catalysis: Furfural Conversion on Pd/SiO 2.” ACS Nano 17, no. 21 (November 14, 2023): 21480–92. https://doi.org/10.1021/acsnano.3c06310.
dc.identifier.issn1936-086X
dc.identifier.urihttps://udspace.udel.edu/handle/19716/33942
dc.language.isoen_US
dc.publisherACS Nano
dc.subjectligand coverage
dc.subjectnonthermal atmospheric plasma
dc.subjectPVP removal
dc.subjectmetal nanoparticles
dc.subjectcatalysis
dc.titlePlasma-Enabled Ligand Removal for Improved Catalysis: Furfural Conversion on Pd/SiO2
dc.typeArticle

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