(Gold core)/(titania shell) nanostructures for plasmon-enhanced photon harvesting and generation of reactive oxygen species

Synthesis of hierarchically porous metal oxides and Au/TiO2 nanohybrids for photodegradation of organic dye and catalytic reduction of 4-nitrophenol

“…which has been detected in Au/TiO 2 under visible light previously [44]. Finally, the reactive oxygen species, including Å O 2 À , Å OH, and 1 O 2 , participated in RhB degradation:…”

“…The wavelength and intensity of the Au LSPR signal depend on the Au particle size and shape, the dielectric constant of the support, and the surrounding medium [42]. Wang's group reported that the LSPR for spherical Au nanoparticles of size $50 nm is $530 nm [43], and the LSPRs for the amorphous TiO 2 -and anatase TiO 2 -coated Au nanospheres with size $50 nm are 580 and 670 nm, respectively [44], similar to that observed here for the Au/TiO 2 hybrid materials. The LSPR peaks of our present Au/TiO 2 hybrid materials broaden obviously because the Au nanoparticles have a wide particle size distribution or are located at different positions in the porous TiO 2 support.…”

Ceria-Coated Gold Nanorods for Plasmon-Enhanced Near-Infrared Photocatalytic and Photoelectrochemical Performances

“…[21][22][23][24] Among the different strategies for the synthesis of metal/semiconductor heteronanostructures, using pre-grown metal nanocrystals as seeds to fabricate metal/semiconductor core/shell nanostructures is a common and widely studied method. 19,[25][26][27][28][29] Comparing to other configuration like york/shell, half coating or the structures made by depositing metal nanocrystals on pre-grown semiconductor; the properties of the core/shell nanostructures can be well controlled by varying the core materials, core geometry, and shell material. In addition, the tight contact between core and shell will also benefit the charge transfer.…”

Metal/Semiconductor Hybrid Nanocrystals and Synergistic Photocatalysis Applications

“…As Figure 6 demonstrated, the Klimov, Talapin, and Wang groups have tried these kinds of method to prepare Au-PbS, Co-CdSe, Au-CdS, and Au-ZnS core/shell hybrid nanocrystals. Although they are highly monodispersed and could self-assemble into superlattice, the polycrystalline shell and too many defects at the interface limited their usefulness, especially in photocatalysis applications [48][49][50][51][52][53].…”