Quantum‐Dot‐Sensitized TiO₂ Inverse Opals for Photoelectrochemical Hydrogen Generation

Abstract

A new nanoarchitecture photoelectrode design comprising CdS quantum-dot-sensitized, optically and electrically active TiO(2) inverse opals is developed for photoelectrochemical water splitting. The photoelectrochemical performance shows high photocurrent density (4.84 mA cm(-2) at 0 V vs. Ag/AgCl) under simulated solar-light illumination.

Fabrication and high photocatalytic performance of noble metal nanoparticles supported on 3DOM InVO4–BiVO4 for the visible-light-driven degradation of rhodamine B and methylene blue

“…The 3DOM architecture is a replicated shell structure of a face-centered-cubic opal based on self-assembly of uniform monodispersed polymer microspheres, which offers relatively large surface areas and high porosity (74% void volume) [14]. Such a hierarchically porous system with secondary pore channels in an interconnected morphology is beneficial for the availability of internal surface, accessibility of more amount of open pores, and diffusivity of reactants and products [15,16].…”

Sandwich-structured TiO2 inverse opal circulates slow photons for tremendous improvement in solar energy conversion efficiency

“…Prominently, a 5-fold enhancement in photocurrent density was achieved by S-IO-TiO 2 in comparison to that of M-IO-(B), markedly higher than those reported elsewhere. 14,[53][54][55][56][57] The calculated photonto-electron conversion efficiency (IPCE) at the wavelength (380 nm) of the S-IO-TiO 2 photoanodes reached a value of 53%, significantly higher than that of H-IO-TiO 2 , M-IO-(B) and ncTiO 2 (15%, 10%, and 1%, respectively). Such an extraordinary performance of S-IO-TiO 2 demonstrates that the light utilization at 380 nm has been enhanced by more than 5 fold, in comparison to M-IO-B.…”

Review of roles for photonic crystals in solar fuels photocatalysis

“…These structures are typically prepared by templating monodisperse polystyrene spheres in an opal arrangement and infiltrating the voids of the face-centered cubic (fcc) array with oxide precursors before removing the template by calcination 12,[14][15][16][17][18] (Fig. 2).…”