Photocatalytic Hydrogen Generation Using Metal-Decorated TiO₂: Sacrificial Donors vs True Water Splitting

Abstract

Figure 1. (a) Water splitting and (b) methanol splitting upon UV excitation, illustrated for Au@TiO 2 .

Photocatalytic production of H2 is a multi-criteria optimization problem: Case study of RuS2/TiO2

“…The resulting rate for the photocatalytic hydrogen evolution reaction (PHER) is therefore increased. Several noble metal co-catalysts were reported in the literature (with Pt, the most studied) [5][6][7][8][9][10][11][12] as well as oxides [13][14][15] or transition metal sulfides co-catalysts [16][17][18][19][20][21][22][23][24]. However, no photocatalytic system is efficient enough to produce sustainable H 2 at a reasonable cost.…”

Different Enhancement Mechanisms of the Anodizing Al‐Doped or Sn‐Coupled Ti3SiC2 for the Photoelectrochemical Performance

“…With the assistance of solar energy, pollutants are degraded by photocatalytic reactions and photons are converted into photocarriers in the solar cell . Hence, the semiconductor as the main component of solar energy conversion materials requires efficient light harvesting, stability, fast carrier generation and separation . TiO 2 semiconductor material possesses the well electrical and optical characteristics and is widely studied in environmental decontamination and energy conversion systems .…”

TiO2–Au composite nanofibers for photocatalytic hydrogen evolution

“…9 However, the photocatalytic efficiency of TiO 2 -based materials is still limited, with a low solar light harvesting capability due to its wide band gap and high charge recombination rate. 10 Therefore, it is important to develop TiO 2 -based photocatalysts for increasing the light harvesting and promoting the photoinduced charge separation during the H 2 generation process.…”

“…Numerous attempts have been devoted to improving the H 2 generation efficiency of TiO 2 materials including doping, 11 metal deposition, 10,12 and heterostructures formation. 13 Chiu 14 has designed a quaternary Ti-Nb-Ta-Zr-O mixed-oxide nanotube arrays; Hsieh 15 has conducted compact deposition of In 2 S 3 nanocrystals on the TiO 2 nanowire array; Li 16 has prepared by electrodepositing a Cu 2 O layer on the surface of Au particlecoated TiO 2 arrays; Chang 17 has synthesized CdS/CdSe cosensitized brookite TiO 2 nanostructures with hydrogen doping (H:TiO 2 /CdS/CdSe) in a facile solution reaction.…”