Dramatically Enhanced Photocatalytic Activity of TiO2 Composite Microspheres by Loading Special Copper Nanocrystalline

Bimetallic and plasmonic Ag and Cu integrated TiO2 thin films for enhanced solar hydrogen production in direct sunlight

“…The photocatalytic H 2 production activity of these materials in thin-film form was evaluated in detail and demonstrated the superior catalytic performance of bimetallic Ag–Cu/TiO 2 over single metal (Ag or Cu)/TiO 2 nanocomposites. Although the photocatalytic H 2 evolution activity of the bimetallic Ag–Cu/TiO 2 photocatalytic material is reported in the literature, 13,15,17 to the best of our knowledge, Ag–Cu/TiO 2 nanocomposites fabricated in thin-film form with the highest solar hydrogen evolution in direct sunlight and a detailed structure–activity relation are reported for the first time in the present manuscript.…”

A review on the recent advances in the design and structure–activity relationship of TiO2-based photocatalysts for solar hydrogen production

“…The modified electronic state has a positive effect by improving the charge transfer and electron-hole separation efficiency. 168 The superior photocatalytic H 2 production activity due to highly dispersed Cu 0 nanoparticles in Cu-TiO 2 MS (mesoporous microporous) photocatalyst, 197 smallsized Au nanoparticles in Au-loaded mesoporous S,N-TiO 2 (SNT), 199 and Pd and Pt nanoparticles in TiO 2 195 substantiate the importance of controlling the metal particle size to achieve the desired properties and enhancing the photocatalytic efficiency. Metal nanoparticles such as Au and Pt with a size in the range of 1-10 nm supported on TiO 2 lead to an increase of energy gap between the Fermi level of metal nanoparticles and the conduction band of TiO 2 , resulting in improved charge separation and enhanced hydrogen production activity.…”

“…The modified electronic state has a positive effect by improving the charge transfer and electron–hole separation efficiency. 168 The superior photocatalytic H 2 production activity due to highly dispersed Cu 0 nanoparticles in Cu–TiO 2 MS (mesoporous microporous) photocatalyst, 197 small-sized Au nanoparticles in Au-loaded mesoporous S,N-TiO 2 (SNT), 199 and Pd and Pt nanoparticles in TiO 2 195 substantiate the importance of controlling the metal particle size to achieve the desired properties and enhancing the photocatalytic efficiency.…”

“…However, metallic particles with a very small size show poor stability due to the high surface energy and easy detachment of particles from the TiO 2 surface when stirred intensely. 197 This suggests that material integration is of great significance for any sustainable operation for long reaction time. 198 Yang et al reported that for a given gold loading, Au@TNT with a reduced particle size showed an improved photocatalytic performance and attributed to the high dispersion of Au particles on the surface of TiO 2 and its modified electronic properties.…”

Photocatalytic Degradation Performance of Fluorine and Nitrogen Co‐doped TiO2/AC Composites over Printing and Dyeing Wastewater under Visible‐Light Irradiation

“…However, visible light accounts for most of the total solar radiation energy and UV light only accounts for 4-5 %. [24][25] In addition, the quantum utilization efficiency is low and only a small number of electron-hole pairs generated by the photoelectric reaction reach the surface of the TiO 2 /AC composite material to cause redox reactions and ∼ 90 % of the electron-holes recombine to release energy in the form of heat, [26][27][28] which limits the application of TiO 2 /AC composite materials. In order to improve these shortcomings, some scholars have begun to explore modification methods for TiO 2 /AC composites.…”