Multi-shelled TiO2/Fe2TiO5 heterostructured hollow microspheres for enhanced solar water oxidation

Promoting Catalytic Oxygen Activation by Localized Surface Plasmon Resonance: Effect of Visible Light Pre‐treatment and Bimetallic Interactions

“…As UV makes up less than 5 % of the solar spectrum, the band gap of TiO 2 represents a major drawback for solar energy utilization. Several methods have been reported in the literature to capture the visible range of the solar spectrum, including doping, organic and inorganic sensitizing, nanostructuring, and incorporating a co‐catalyst …”

“…Severalm ethods have been reported in the literature to capture the visible range of the solar spectrum,i ncluding doping, organic and inorganic sensitizing, nanostructuring, and incorporating ac o-catalyst. [4][5][6][7][8][9][10] In recent years, reports on the localized surface plasmon resonance( LSPR) effect has opened up new possibilities for visible light utilization. [11][12][13][14][15][16][17] The LSPR effect relies on the excitation of electrons on the metal surface, which occurs only at as pecific frequency corresponding to as pecific wavelength that is characteristic of the metal.…”

Design of Heterostructured Hollow Photocatalysts for Solar‐to‐Chemical Energy Conversion

“…The high activity is ascribed to the unique complex hollow structure, broad light absorption range from ultraviolet light–responsive ZnS and visible light–responsive CdS, and promoted charge separation in the heterostructure (Figure H,I). In another work, a sequential templating approach was performed to fabricate heterostructured TiO 2 /Fe 2 TiO 5 photocatalysts with tunable Fe/Ti molar ratios and controllable single‐, double‐, triple‐, core‐, and closed‐double‐shelled structures . Among all these photocatalysts, the closed‐double‐shelled sample manifests the highest activity with the O 2 evolution rate of 375 µmol g −1 h −1 and good stability for 5 h. The abundant active sites, promoted light absorption, reduced charge transfer distance, and enhanced charge separation derived from the multishelled heterostructure are believed to be the reasons for the high activity.…”

“…Compared with single‐shelled particles, photocatalysts with multishelled structures would show better light absorption abilities due to the promoted light scattering. Besides, the structural robustness could also be enhanced owing to the mutual support of different shells . Inspired by the above advantages, it could be expected that heterostructured hollow semiconductors would show high performance as photocatalysts for solar‐to‐chemical energy conversion.…”

Robust Synthesis of Gold‐Based Multishell Structures as Plasmonic Catalysts for Selective Hydrogenation of 4‐Nitrostyrene

“…[8,9] Constructing multishell structures of Au may further increase their plasmonic catalytic activity,s ince the porous multiple shells can provide larger specific surface area, enable molecules to access to the interior of structures,and increase light-harvesting. [10,11] Forthe synthesis of multishell noble metals,methods have mainly focused on the use of galvanic replacement reactions, involving multiple growing and etching of sacrificial shells. [12,13] These preparation procedures are tedious,e specially for ashell number above two,and the obtained products show low reproducibility,w hich hinders their further applications.I nterestingly,m ultishell structure of metal oxide can be facile formation by controlling decomposition of metalorganic template.…”