Synthesis and characterization of branched fcc/hcp ruthenium nanostructures and their catalytic activity in ammonia borane hydrolysis

Handle URI:
http://hdl.handle.net/10754/627069
Title:
Synthesis and characterization of branched fcc/hcp ruthenium nanostructures and their catalytic activity in ammonia borane hydrolysis
Authors:
AlYami, Noktan; LaGrow, Alec P; Anjum, Dalaver H.; Guan, Chao; Miao, Xiaohe; Sinatra, Lutfan ( 0000-0001-7034-7745 ) ; Yuan, Ding-Jier; Mohammed, Omar F. ( 0000-0001-8500-1130 ) ; Huang, Kuo-Wei ( 0000-0003-1900-2658 ) ; Bakr, Osman M. ( 0000-0002-3428-1002 )
Abstract:
Several systems have shown the ability to stabilize uncommon crystal structures during the synthesis of metallic nanoparticles. By tailoring the nanoparticle crystal structure, the physical and chemical properties of the particles can also be controlled. Herein, we first synthesized branched nanoparticles of mixed hcp/fcc ruthenium, which were formed using tungsten carbonyl [W(CO)6] as both a reducing agent and a source of carbon monoxide. The branched particles were formed from multiple particulates off a central core. High-resolution transmission electron microscopy (HRTEM) clearly showed that the branched structures consisted of aligned hcp crystal domains, a mixture of fcc and hcp crystal domains with several defects and misalignments, and particles that contained multiple cores and branches. Branched particles were also formed with molybdenum carbonyl [Mo(CO)6], and faceted particles of hcp and fcc particles were formed with Re2(CO)10 as a carbon monoxide source. Without metal carbonyls, small particles of spherical hcp ruthenium were produced, and their size could be controlled by the selection of the precursor. The ruthenium nanoparticles were tested for ammonia borane hydrolysis; the branched nanoparticles were more reactive for catalytic hydrogen evolution than the faceted hcp/fcc nanoparticles or the spherical hcp nanoparticles. This work showcases the potential of crystal phase engineering of transition metal nanoparticles by different carbon monoxide precursors for tailoring their catalytic reactivity.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Chemical Science Program; KAUST Solar Center (KSC); KAUST Catalysis Center (KCC); Imaging and Characterization Core Lab
Citation:
Alyami NM, LaGrow AP, Anjum DH, Guan C, Miao X-H, et al. (2018) Synthesis and characterization of branched fcc/hcp ruthenium nanostructures and their catalytic activity in ammonia borane hydrolysis. Crystal Growth & Design. Available: http://dx.doi.org/10.1021/acs.cgd.7b01489.
Publisher:
American Chemical Society (ACS)
Journal:
Crystal Growth & Design
Issue Date:
30-Jan-2018
DOI:
10.1021/acs.cgd.7b01489
Type:
Article
ISSN:
1528-7483; 1528-7505
Sponsors:
The research reported in this publication was supported by funding from KAUST.
Additional Links:
https://pubs.acs.org/doi/10.1021/acs.cgd.7b01489
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Materials Science and Engineering Program; KAUST Catalysis Center (KCC); Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorAlYami, Noktanen
dc.contributor.authorLaGrow, Alec Pen
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorGuan, Chaoen
dc.contributor.authorMiao, Xiaoheen
dc.contributor.authorSinatra, Lutfanen
dc.contributor.authorYuan, Ding-Jieren
dc.contributor.authorMohammed, Omar F.en
dc.contributor.authorHuang, Kuo-Weien
dc.contributor.authorBakr, Osman M.en
dc.date.accessioned2018-02-07T07:02:29Z-
dc.date.available2018-02-07T07:02:29Z-
dc.date.issued2018-01-30en
dc.identifier.citationAlyami NM, LaGrow AP, Anjum DH, Guan C, Miao X-H, et al. (2018) Synthesis and characterization of branched fcc/hcp ruthenium nanostructures and their catalytic activity in ammonia borane hydrolysis. Crystal Growth & Design. Available: http://dx.doi.org/10.1021/acs.cgd.7b01489.en
dc.identifier.issn1528-7483en
dc.identifier.issn1528-7505en
dc.identifier.doi10.1021/acs.cgd.7b01489en
dc.identifier.urihttp://hdl.handle.net/10754/627069-
dc.description.abstractSeveral systems have shown the ability to stabilize uncommon crystal structures during the synthesis of metallic nanoparticles. By tailoring the nanoparticle crystal structure, the physical and chemical properties of the particles can also be controlled. Herein, we first synthesized branched nanoparticles of mixed hcp/fcc ruthenium, which were formed using tungsten carbonyl [W(CO)6] as both a reducing agent and a source of carbon monoxide. The branched particles were formed from multiple particulates off a central core. High-resolution transmission electron microscopy (HRTEM) clearly showed that the branched structures consisted of aligned hcp crystal domains, a mixture of fcc and hcp crystal domains with several defects and misalignments, and particles that contained multiple cores and branches. Branched particles were also formed with molybdenum carbonyl [Mo(CO)6], and faceted particles of hcp and fcc particles were formed with Re2(CO)10 as a carbon monoxide source. Without metal carbonyls, small particles of spherical hcp ruthenium were produced, and their size could be controlled by the selection of the precursor. The ruthenium nanoparticles were tested for ammonia borane hydrolysis; the branched nanoparticles were more reactive for catalytic hydrogen evolution than the faceted hcp/fcc nanoparticles or the spherical hcp nanoparticles. This work showcases the potential of crystal phase engineering of transition metal nanoparticles by different carbon monoxide precursors for tailoring their catalytic reactivity.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from KAUST.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.cgd.7b01489en
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Crystal Growth & Design, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.cgd.7b01489.en
dc.subjectContinuous flowen
dc.subjectMillifluidicsen
dc.subjectNanoparticleen
dc.subjectPolymorphismen
dc.subjectAmmonia borane hydrolysisen
dc.titleSynthesis and characterization of branched fcc/hcp ruthenium nanostructures and their catalytic activity in ammonia borane hydrolysisen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentKAUST Solar Center (KSC)en
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentImaging and Characterization Core Laben
dc.identifier.journalCrystal Growth & Designen
dc.eprint.versionPost-printen
dc.contributor.institutionAdvanced Analysis Unit, Technical Service Division, Research and Development Center, Saudi Aramco, Saudi Arabia.en
dc.contributor.institutionUCL Healthcare Biomagnetic and Nanomaterials Laboratories, 21 Albemarle street, London W1S 4BS, U.K.en
dc.contributor.institutionUniversity College London (UCL), Department of Physics and Astronomy, London, WC1E 6BT, U.K.en
kaust.authorAlYami, Noktanen
kaust.authorAnjum, Dalaver H.en
kaust.authorGuan, Chaoen
kaust.authorMiao, Xiaoheen
kaust.authorSinatra, Lutfanen
kaust.authorYuan, Ding-Jieren
kaust.authorMohammed, Omar F.en
kaust.authorHuang, Kuo-Weien
kaust.authorBakr, Osman M.en
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