Growth behavior of Au/Cu_2−xS hybrids and their plasmon-enhanced dual-functional catalytic activity

Abstract

The growth behavior of Au/Cu2−xS hybrids was investigated, and the obtained half-shell Au(nanospheres)/Cu2−xS exhibited dual-plasmon enhanced bifunctional catalytic activity.

Enhanced Photocatalytic Hydrogen Generation by Optimized Plasmonic Hot Electron Injection in Structure-Adjustable Au-ZnO Hybrids

“…Deionized water with a resistivity of about 18·25 MΩ cm was used as the solvent in all experiments. Au nanospheres were prepared as previously reported [28]. For the synthesis of structure-adjustable Au-ZnO hybrids, 2 mL of zinc acetate (0.1 M), 2 mL of ascorbic acid (0.1 M), and 5 mL of hexamethylenetetramine (0.1 M) were added to 10 mL as-prepared Au nanospheres in an aqueous solution.…”

Tunable Near-Field Enhancement in Structure-Adjustable Au Nanodumbbells for Improved SERS and Double-Resonantly Enhanced SHG

“…Au NRs were first prepared by a seed-mediated method according to our previous work. 34 To grow PbS on Au NRs, 1 mL of L-ascorbic acid (AA, 0.1 M), 1 mL of hexadecyltrimethylammonium bromide (CTAB, 0.2 M), and 1 mL of sodium hydroxide (NaOH, 50 mM) were added to 5 mL of as-prepared Au NRs. Then, 0.05 mL of thioacetamide (TAA, 0.1 M) and 0.04 mL of lead acetate (0.1 M) were added.…”

Dual-Plasmonic Gold@Copper Sulfide Core–Shell Nanoparticles: Phase-Selective Synthesis and Multimodal Photothermal and Photocatalytic Behaviors

“…When executing their photocatalytic functions, Au−Cu x E hetero-nanostructures might also outperform the monocomponent Cu x E NPs upon optical excitations of the interband transitions primarily because of the fact that Au served as an electron sink, promoting the charge separation in the excitons. 40,43 How the plasmonic hot carriers in these Au− Cu x E hetero-nanostructures behave differently from the excitons, however, still remains unexplored.…”

“…Au and copper chalcogenides (Cu x E, 1 ≤ x ≤ 2, E = S, Se, or Te) represent particularly interesting material combinations for the assembly of such dual-plasmonic hetero-nanostructures. A variety of Au–Cu x E hetero-nanostructures with distinct structural configurations, such as Janus-like heterodimers, , core–shell NPs, − yolk–shell NPs, and UFO-like NPs, have been experimentally realized through deliberately designed colloidal syntheses. Interestingly, some of these hetero-nanostructures acted as better-performing photothermal transducers in comparison to their metal and semiconductor constituents alone, ,, although the detailed mechanisms underpinning such enhanced photothermal performances are still open to further scrutiny.…”

“…Interestingly, some of these hetero-nanostructures acted as better-performing photothermal transducers in comparison to their metal and semiconductor constituents alone, ,, although the detailed mechanisms underpinning such enhanced photothermal performances are still open to further scrutiny. When executing their photocatalytic functions, Au–Cu x E hetero-nanostructures might also outperform the monocomponent Cu x E NPs upon optical excitations of the interband transitions primarily because of the fact that Au served as an electron sink, promoting the charge separation in the excitons. , How the plasmonic hot carriers in these Au–Cu x E hetero-nanostructures behave differently from the excitons, however, still remains unexplored.…”