Photocatalytic properties of Pd/TiO₂ nanosheets for hydrogen evolution from water splitting

Abstract

Pd/TiO2 nanosheet catalysts were successfully prepared and used in the photocatalytic water splitting reaction. The Pd/TiO2 nanosheet catalysts showed immensely improved photocatalytic activities compared to pure TiO2 nanosheets.

Enhanced hydrogen evolution reaction on highly stable titania‐supported PdO and Eu2O3nanocomposites in a strong alkaline solution

“…A solid, red line through the data points is a LeBail refinement. The main diffraction peaks at 2ϴ values of 25.4°, 37.9°, 48.1°, 54.1°, 55.1°, 62.9°, 69.4°, 70.5°, and 75.2° are attributed to the anatase phase crystal structure of TiO 2 NPs and reflections observed at 40.2°, 46.8°, 68.4°, and 82.4° belong to the metallic Pd. Similarly, the characteristic diffraction peaks for the anatase phase of TiO 2 (black vertical bars) are observed for Eu 2 O 3 /TiO 2 .…”

“…The high‐resolution XPS spectroscopy analysis of Eu 2 O 3 /TiO 2 and PdO/TiO 2 NCs with comparison to TiO 2 substrate is presented in Figure . The spectra recorded in binding energy (BE) range characteristic for Ti2p peak doublet (Figure a) shows the presence of single component, with Ti2p 3/2 peak located at 458.9 ± 0.1 eV and characteristic for anatase TiO 2 structure . Its presence is also reflected in the form of O1s spectra (Figure b); two characteristic peaks were used for deconvolution purposes.…”

Template Based Synthesis of Plasmonic Ag‐modified TiO2/SnO2 Nanotubes with Enhanced Photostability for Efficient Visible‐Light Photocatalytic H2 Evolution and RhB Degradation

“…[8] To extend the light absorption range, prolong the lifetimes of photoexcited electron-hole pairs and enhance the photocatalytic activity of TiO 2 , various strategies have been employed, such as surface modification, [10] bandgap engineering by doping with a transition metals (Cr, Mn, Co, Zn, Ni, Fe) [11][12][13] and non-metals (N, P, S, C, B, etc. ), [14][15][16][17] plasmonic coupling (Au, Ag, Pt and Pd) [18][19][20][21] and coupling with other semiconductors (ZnO, WO 3 , SrTiO 3 , SnO 2 , CdS, ZnS, CdSe, Cu 2 O and MoS 2 ). [22][23][24][25][26][27][28] Among these strategies coupling TiO 2 with other semiconductors is recognized as the most efficient modification, which can result in an effective separation of photogenerated electron-hole pairs, and improving the photocatalytic activity.…”

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

“…The metal also plays a role as an active site for water reduction. Pd [13], Pt [14,15], Ag [16], Au [17], Cu [18] have been reported to be active metals for water splitting when used in conjunction with a semiconductor and a hole scavenger. Studies reported by Li et al on Au encapsulated with TiO 2 , highlighted that the Au role is to promote hydrogen association to leave metal surface by the reduction of protons on the TiO 2 surface [19].…”