Periodic AuAg‐Ag₂S Heterostructured Nanowires

Abstract

AuAg‐Ag2S heterostructured nanowires consisting of periodic AuAg alloy and Ag2S nanocrytals are synthesized in a simple, one‐pot reaction. After the AuAg alloy nanowire with a diameter of 2–3 nm is synthesized, it is converted to AuAg‐Ag2S heterostructured nanowire by addition of sulfur. The diffusion of Au and Ag in the Ag2S nanocrystals and the subsequent Ostwald ripening process are the key reasons for the formation of heterostructured nanowires. This new type of hybrid nanostructure undergoes photoinduced charge separation and may have photocatalytic applications.

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

“…[ 5,10 ] Therefore, the Ag 2 S-Ag heterostructured nanobowl arrays collected on an FTO slide were directly used as a photoanode of photoelectrochemical cell (PEC) for water splitting as a proof-of-concept application, as illustrated in Figure 4 a. Upon visible light illumination, the electron-hole pairs were generated in Ag 2 S nanonets.…”

“…[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.…”

Sustainable Nanoplasmon‐Enhanced Photoredox Reactions: Synthesis, Characterization, and Applications

“…Plasmonic materials exhibit tremendous potential to drive chemical conversions by photo-mediated redox catalysis. [1][2][3][4][5] A remarkable leverage of these materials over other catalysts is the ability to facilitate reactions efficaciously under milder conditions. Plasmonic materials are especially important due to their superior light focusing ability from free-space wavelength to sub-wavelength range.…”

Site‐Specific Growth of Au on CdSxSe1−x Yields Anisotropic Heteronanocrystals with Enhanced Photocatalysis Performance

“…Metal/CdS x Se 1− x anisotropic nanocrystals serve as an important heteronanostructure, because the charge separation can be realized at the metal/semiconductor interface . In our earlier work, we have reported a series of metal/semiconductor hybrid nanostructures, and metal Au in Au/CdS heterodimer structures acts as a cocatalyst, suggesting a rapid electron transfer from conduction band (CB) of CdS to Au nanoparticle, thus optimizing the photocatalytic activity …”