Self-oriented TiO₂ nanosheets in films for enhancement of electron transport in nanoporous semiconductor networks

Abstract

Self-oriented TiO2 nanosheets in nanoporous films were obtained by surface functionalization with amino acid derivatives adsorbed on nanosheets.

Effects of energetics with {001} facet-dominant anatase TiO2 scaffold on electron transport in CH3NH3PbI3 perovskite solar cells

“…1a, series of NS TiO 2 exposing {001} facet can be spontaneously aligned with the anatase [001] perpendicularly to the substrate plane due to the sheet structure of nanoparticles. This orientation is also confirmed by the XRD of TiO 2 films (S2) in which series of NS TiO 2 exhibited relatively intense (004) peak at two theta of ~38 o (S2), as we previously reported [62,63]. Since the perovskite film is constructed on the TiO 2 scaffold, the difference in morphology of TiO 2 could also affect to the interfacial properties.…”

Hollow Multi-Shelled Structures of Co3O4 Dodecahedron with Unique Crystal Orientation for Enhanced Photocatalytic CO2 Reduction

“…Besides structure control, the regulation of surface fine structure often demonstrates a significant effect on materials' performance properties, 22,23 e.g., the facet effect on catalytic activity and selectivity of catalysts. 24−28 Until now, the building blocks have been arranged irregularly within most HoMSs, which may lead to a loss of some specific properties in practical applications.…”

“…Besides structure control, the regulation of surface fine structure often demonstrates a significant effect on materials’ performance properties, , e.g., the facet effect on catalytic activity and selectivity of catalysts. − Until now, the building blocks have been arranged irregularly within most HoMSs, which may lead to a loss of some specific properties in practical applications. Herein, fabricating HoMSs with high-activity facets exposed allows us to combine the benefits of both strategies, which is very attractive but challenging, and there are few reports of success.…”

Heteroacoagulation of lignocellulose fibers-based biotemplates and functionalized TiO2 nanoparticles to tailor film microstructures

“…Many attempts to improve the photoresponse of the TiO 2 films aims an enhanced reactant-catalyst contact through the design of complex structures with large surfaceto-volume ratio. The TiO 2 structure and photoactivity can be controlled by tuning the semiconductor physical properties (particle size, crystalline phase, preferred orientation) (Maitani et al 2017) as well as by optimizing the shaping of the TiO 2 hosting material, paying attention to factors that are imperative to the precursors mixture or the slurry preparation, and the films deposition, such as rheological behavior, stability and dispersion of particles, method used, etc. (Sharifi et al 2014) Among the deposition techniques that can be used to prepare ordered porous films, the endo-templates are commonly used since the pore's dimensions can be determined by the size of the ordered template beads (Asim et al 2014), offering a high control over the physical features of the shaped films.…”