Position of gold dictates the photophysical and photocatalytic properties of Cu<sub>2</sub>O in Cu<sub>2</sub>O/Au multicomponent nanoparticles

Kovács, Dávid; Deák, András; Radnóczi, G.; Horváth, Zsolt Endre; Sulyok, A.; Schiller, Róbert; Czömpöly, Ottó; Zámbó, Dániel

doi:10.1039/d3tc01213a

Cited by 7 publications

(3 citation statements)

References 59 publications

(84 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The small lattice mismatch ( f ) between Cu 2 O and Au ( f = 4.5%) 36 and between Cu 2 O and Ag ( f = 4.2%) 49 allows for the creation of their core–shell hybrids. Core–shell structures of Au@Cu 2 O, 36,44,50–61 Cu 2 O@Au, 42,62 Ag@Cu 2 O, 49,51,63–67 and Cu 2 O@Ag 68–72 have been reported in the literature. They are most commonly prepared using two-pot colloidal synthesis procedures, where the core component is synthesized and isolated first before being fully encapsulated in the shell component, usually through simple reduction in solution.…”

Section: Design and Synthesis Of Pm–cu2o Nanocompositesmentioning

confidence: 96%

“…For core–satellite structures of PM–Cu 2 O, the satellite component is usually the plasmonic metal, of which small nanoparticles decorate the surface of the larger Cu 2 O core. 37–45 Adorning the Cu 2 O core with PM satellites instead of encapsulating it in a full PM shell minimizes the consumption of the costly noble metal.…”

Section: Design and Synthesis Of Pm–cu2o Nanocompositesmentioning

confidence: 99%

“…In a recent work by Kovács et al , the position of Au was found to dictate the photocatalytic properties of Au–Cu 2 O nanocomposites. 44 They compared two types of configuration: core–satellite where Au nanoparticles decorate the surface of octahedron-shaped Cu 2 O and core–shell where an Au nanorod is embedded within an octahedral Cu 2 O shell. The overall size, shape (octahedral), and composition (Cu:Au ratio) of the hybrids were kept identical.…”

Section: Photocatalytic Applicationsmentioning

confidence: 99%

See 2 more Smart Citations

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Legaspi,

Regulacio

2023

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

Section: Design and Synthesis Of Pm–cu2o Nanocompositesmentioning

confidence: 96%

Section: Design and Synthesis Of Pm–cu2o Nanocompositesmentioning

confidence: 99%

Section: Photocatalytic Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Legaspi,

Regulacio

2023

Nanoscale Adv.

View full text Add to dashboard Cite

show abstract

Optical and Structural Properties of Cuprous Oxide Shell Coated Gold Nanoprisms

Zámbó,

Kovács,

Deák

2024

Part & Part Syst Charact

View full text Add to dashboard Cite

Cuprous oxide nanoparticles can be prepared with a great morphological control, and their composites with gold nanostructures are intensively studied owing to their catalytic performance. In this study, cuprous oxide shell growth on nanosized prism‐shaped gold nanoparticles is investigated, where the core‐particle morphology does not match the prototypical cubic or octahedral symmetry of the embedding cuprous oxide particle. It is shown that different shell morphology is obtained depending on the reducing agent used for the shell deposition. Strong reducing agent (hydrazine) leads to a multi‐slab‐like coating with smooth facets, while under milder conditions (hydroxylamine) a multi‐grain coating is obtained. Successful realization of time‐dependent spectroscopic and structural investigations indicate that in this latter case cuprous oxide shell growth is initiated site‐selectively, namely in the highly curved regions of the particle, with a higher growth rate around the tips of the nanoprisms. This is supported by correlative single‐nanoparticle spectroscopy/scanning electron microscopy measurements, that allow to establish the connection between the optical properties and the structure of these plasmonic/semiconductor core/shell nanoparticles.

show abstract

Photocatalytic bioheteronanostructures by integrating multicomponent Cu2O–Au nanoparticles into ZnO-coated butterfly wings colored by photonic nanoarchitectures

Piszter,

Kertész,

Nagy

et al. 2024

J Mater Sci

View full text Add to dashboard Cite

Complex biological photocatalytic heteronanostructures were produced by the integration of different multicomponent Au–Cu2O nanoparticles (NPs) into the blue-colored photonic nanoarchitectures occurring in the wings of male Polyommatus icarus butterflies. Both bare wings and wings conformally coated by 15-nm ZnO by atomic layer deposition were used as substrates. The NPs were characterized by UV–visible spectroscopy, focus stacking optical microscopy, and electron microscopy. After the deposition of the different NPs, the photocatalytic performance of the samples under visible light illumination was tested by the photodegradation of methyl orange in aqueous solution monitored continuously by an immersion probe. It was found that the components of the biological hetero-nanoarchitecture: ZnO-coated wings and wings without ZnO with deposited NPs exhibited poor catalytic performance. But the combined system: ZnO-coated wings with NPs deposited onto them exhibited sixfold to eightfold increase in their catalytic performance. This increase is attributed to the extension of the ZnO absorption into the visible range and to the formation of the heterojunction between the n-type ZnO and the p-type Cu2O NPs which resulted in the charge transfer of the photogenerated carriers. As the samples exhibited good stability under the continuous magnetic stirring, they can be used in flow-through systems suitable for wastewater remediation. The biological templates for the hetero-nanoarchitectures were produced by the controlled breeding of herbivorous insects, which does not raise any environmental concerns.

show abstract

Position of gold dictates the photophysical and photocatalytic properties of Cu₂O in Cu₂O/Au multicomponent nanoparticles

Abstract: Utilizing solar radiation for driving chemical reactions has been of great interest in the last decade. Although Cu2O nanocrystals as a low-cost, abundant, and tailorable photocatalyst are promising candidates to...

Cited by 7 publications

References 59 publications

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Optical and Structural Properties of Cuprous Oxide Shell Coated Gold Nanoprisms

Photocatalytic bioheteronanostructures by integrating multicomponent Cu2O–Au nanoparticles into ZnO-coated butterfly wings colored by photonic nanoarchitectures

Contact Info

Product

Resources

About

Position of gold dictates the photophysical and photocatalytic properties of Cu2O in Cu2O/Au multicomponent nanoparticles

Abstract: Utilizing solar radiation for driving chemical reactions has been of great interest in the last decade. Although Cu2O nanocrystals as a low-cost, abundant, and tailorable photocatalyst are promising candidates to...

Cited by 7 publications

References 59 publications

Nanocomposites of Cu2O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Nanocomposites of Cu2O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Optical and Structural Properties of Cuprous Oxide Shell Coated Gold Nanoprisms

Photocatalytic bioheteronanostructures by integrating multicomponent Cu2O–Au nanoparticles into ZnO-coated butterfly wings colored by photonic nanoarchitectures

Contact Info

Product

Resources

About

Position of gold dictates the photophysical and photocatalytic properties of Cu₂O in Cu₂O/Au multicomponent nanoparticles

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications

Nanocomposites of Cu₂O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications