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Hierarchical CuO Colloidosomes and Their Structure Enhanced Photothermal Catalytic Activity

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dc.contributor.authorXu, J.
dc.contributor.authorLi, X.
dc.contributor.authorWu, X.
dc.contributor.authorWang, W.
dc.contributor.authorFan, R.
dc.contributor.authorLiu, X.
dc.contributor.authorXu, H.
dc.date.issued2016
dc.descriptionData source: Supporting information, http://pubs.acs.org/doi/abs/10.1021/acs.jpcc.6b03750
dc.description.abstractHierarchical CuO colloidosomes (hollow spheres) constructed by subunit of open-mouthed hollow spheres that consist of 2D nanoleaves are synthesized via a Pickering emulsion strategy. Cu2O particles were served as emulsifier particles to form the Pickering emulsions. Self-oxidation of Cu2O gave rise to the formation of CuO nanoleaves which spontaneously cross-link the neighboring particles on the emulsion droplet surfaces, forming the robust colloidosomes. Concurrently, asymmetric Kirkendall effect produced the open-mouthed hollow structure in the subunit CuO particles, resulting in the hierarchical hollow structures of the colloidosomes. Because of the complex and multilevel hollow structure, the CuO colloidosomes significantly enhanced light harvest and photothermal conversion, leading to high local temperature (∼200 °C) on the surfaces under light irradiation at room temperature. This structure enhanced photothermal effect realized the photothermal catalytic CO oxidation at room temperature with a reaction rate 20 times higher than that of thermal catalysis at 240 °C.
dc.identifier.citationJournal of Physical Chemistry C, 2016; 120(23):12666-12672
dc.identifier.doi10.1021/acs.jpcc.6b03750
dc.identifier.issn1932-7447
dc.identifier.issn1932-7455
dc.identifier.orcidXu, H. [0000-0002-9126-1593]
dc.identifier.urihttps://hdl.handle.net/11541.2/124664
dc.language.isoen
dc.publisherAMER CHEMICAL SOC
dc.relation.fundingARC DE120100042
dc.relation.fundingUniversity of South Australia Foundation Fellow
dc.relation.granthttp://purl.org/au-research/grants/arc/DE120100042
dc.rightsCopyright 2016 American Chemical Society Access Condition Notes: Postprint available after 1 October 2017
dc.source.urihttps://doi.org/10.1021/acs.jpcc.6b03750
dc.subjectcatalytic oxidation
dc.subjectcopper oxides
dc.subjectemulsification
dc.subjectemulsions
dc.subjectself assembly
dc.subjectemulsion droplets
dc.subjecthollow structure
dc.subjectKirkendall effects
dc.titleHierarchical CuO Colloidosomes and Their Structure Enhanced Photothermal Catalytic Activity
dc.typeJournal article
pubs.publication-statusPublished
ror.fileinfo12143384670001831 13143384660001831 9916105202401831
ror.mmsid9916105202401831

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