Ag nanoprisms with Ag2S attachment

Abstract

Triangular Ag nanoprisms are a type of most-studied noble-metal nanostructures over the past decade owing to their special structural architecture and outstanding optical and catalytic properties for a wide range of applications. Nevertheless, in contrast to active research for the synthesis of phase-pure Ag nanoprisms, no asymmetric heterodimers containing Ag prisms have been developed so far, probably due to lack of suitable synthetic methods. Herein, we devise a simple ion-exchange method to synthesize Ag2S/Ag heterodimers at room temperature, through which Ag nanoprisms with controllable size and thickness can be fabricated. Formation chemistry and optical properties of the heterodimers have been investigated. These semiconductor/metal heterodimers have exhibited remarkable bactericidal activity to E. coli cells under visible light illumination.

Rethinking Stability of Silver Sulfide Nanoparticles (Ag2S-NPs) in the Aquatic Environment: Photoinduced Transformation of Ag2S-NPs in the Presence of Fe(III)

“…Interestingly, there was a large number of small particles with size of <15 nm in the Ag 2 S-NP solution after 48 h in the light (Figure 3e). Lattice fringe spacing of the small particles was ∼2.6 Å (Figure 3f), which was determined by counting 10 lattice spacings, being well-consistent with the {−121} planes of monoclinic Ag 2 S. 24 More importantly, EDX measurement demonstrated the presence of silver and sulfur in the small particles (Figure 3e), matching with the rise in the Ag 2 S-NP peak in the UV−vis spectra ( Figure S3 of the Supporting Information). In contrast, no small particles were observed in the Ag 2 S-NP solution after 48 h in the dark ( Figure 3g).…”

Hydrothermal Synthesis of Unique Hollow Hexagonal Prismatic Pencils of Co3V2O8⋅n H2O: A New Anode Material for Lithium‐Ion Batteries

“…Asimilar phenomenon was reported for Ag prisms controlled by different structure-directed agents. [21][22][23] In our system, Co 3 V 2 O 8 ·n H 2 Op encils could not overgrow and become hollow using the well-grown solid Co 3 V 2 O 8 ·n H 2 O pencils as starting seeds even though an appropriate amount of NaOH was involved ( Figure S12). Hence,t he hollowing process is not due to the etching caused by the alkaline medium, in contrast to the previous reported results.…”

Interfacial Nanosphere Lithography toward Ag2S–Ag Heterostructured Nanobowl Arrays with Effective Resistance Switching and Enhanced Photoresponses

“…[1][2][3][4][5] In particular, considerable efforts have been devoted to the controlled fabrication of hybrid nanostructures comprising Ag 2 S and noble metals, such as composite nanoparticles of Ag 2 S and various noble metals, [ 3 ] core-shell Au@Ag 2 S nanoparticles, [ 6 ] hollow-solid Ag 2 S-Ag nanocomposites, [ 2,7 ] porous Ag 2 S-Ag hybrid nanotubes, [ 4 ] periodic Ag 2 S-AuAg heterostructured nanowires, [ 5 ] Ag 2 S-Ag hybrid nanoprisms, [ 8,9 ] and Ag 2 S-Au hybrid nanoframes.…”

“…[ 10 ] Such Ag 2 S-noble metal heterostructures have demonstrated potential applications in electrocatlysis, [ 3 ] photocatalytic degradation [ 4 , 7a ] and water splitting, [ 5,10 ] bacterial deactivation, [ 2,9 ] and biosensing. [ 8 ] Moreover, as typical ionic conductor/metal hybrid nanostructures, Ag 2 S-Ag nanowire heterostructures have shown promising applications in resistance switching and nonvolatile memory devices.…”