An LSPR-based “push–pull” synergetic effect for the enhanced photocatalytic performance of a gold nanorod@cuprous oxide-gold nanoparticle ternary composite

Abstract

Au nanorod@octahedron Cu2O with preferentially edge-loaded Au nanoparticles was designed for improved photocatalytic performance due to the LSPR-based “push–pull” synergetic effect.

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

“…The crystalline shape of Cu 2 O is determined by the reducing agent. For example, the use of hydrazine and sodium dodecyl sulfate drives Cu 2 O to grow into an octahedral shape . The addition of NH 2 OH·HCl as a reducing agent causes the growth of Cu 2 O into a cuboidal shape (Figure j) …”

“…For example, the use of hydrazine and sodium dodecyl sulfate drives Cu 2 O to grow into an octahedral shape. 425 The addition of NH 2 OH• HCl as a reducing agent causes the growth of Cu 2 O into a cuboidal shape (Figure 6j). 426 TiO 2 is an n-type semiconductor with a large bandgap.…”

A carbon capture and storage technique using gold nanoparticles coupled with Cu-based composited thin film catalysts

“…The metal-semiconductor nonradiative decay can improve electron transformation and prevent electron-hole pair recombination. [28][29][30] Previous studies have shown several Au nanostructures combined with Cu 2 O particles for various photochemical and electrochemical reactions, for example, the photocatalytic destruction, 26 hydrogen evolution reaction, 31 oxygen evolution reaction, 32 CO oxidation, 33 CO 2 RR but with Cu 2 O nanotubes with Au NP deposition, 34 instead of the direct deposition of thin lms in the current study, which is arguably easier to prepare and replicate for future development.…”

“…[22][23][24] Being light-sensitive, gold nanoparticles are easily polarized under photon excitation at the cathode and thus provide rich sources of energetic electrons for CO 2 activation. 25,26 This phenomenon of an increased localized electromagnetic eld is called the localized surface plasmon resonance (LSPR). 27 In the case of Au/Cu 2 O, aer the LSPR effect, the energy decays non-radiatively, generating either hot carriers owing through the contact of Au nanoparticles and Cu 2 O, or plasmon resonant energy transfer (PRET) between Au and Cu 2 O.…”

Recent Advances in the Design and Photocatalytic Enhanced Performance of Gold Plasmonic Nanostructures Decorated with Non-Titania Based Semiconductor Hetero-Nanoarchitectures

“…Even though ternary heterostructures are not the main focus of this review, it is worth mentioning recent efforts to build Z-schemed TiO 2 -Au-Cu 2 O photoelectrodes [30] or the addition of a third component of small Au NPs to the Au-Cu 2 O hybrids reported by Yu et al [113]. They designed a more complex core-shell AuNR@Cu 2 O (octahedral) architecture additionally decorated with AuNPs (Figure 8).…”