Photocatalytic reduction of dinitrogen to ammonia over noble-metal-loaded TiO2

Noble metal modified reduced graphene oxide/TiO2 ternary nanostructures for efficient visible-light-driven photoreduction of carbon dioxide into methane

“…This is attributed to the damping effect of the d-d transitions in these metals, which tends to wash out the free electron contribution to the dielectric function [58]. Nevertheless, the Pt-GT and Pd-GT composites are still expected to show enhanced photocatalytic performance as the metal clusters would cause localized energy levels in the band gap of TiO 2 nanoparticles below the conduction band, where the valence band electrons could be excited at longer wavelengths [59]. A plot of the transformed KM function versus photon energy is shown in Fig.…”

Photocatalytic intercalated material based on HLaNb2O7 as host and Cd0.8Zn0.2S as guest

“…(6)) between the photoinduced charge carriers was effectively depressed [6,11,12] . This is one of the reasons that (Pt, Cd 0.8 Zn 0.2 S)/HLaNb 2 O 7 intercalated material has higher photocatalytic activity than that of unsupported HLaNb 2 O 7 and Cd 0.8 Zn 0.2 S. Besides, the Pt acting as an electron-transfer catalyst [6,24,25] improves metal hydrogen bond, redox potential and work function of the noble metal atom, which results in higher photocatalytic activities of (Pt,Cd 0.8 Zn 0.2 S)/ HLaNb 2 O 7 intercalated material than those of undoped platinum Cd 0.8 Zn 0.2 S/HLaNb 2 O 7 . In addition, due to the photons energy (lower than 3.1 eV, under irradiation with λ > 400 nm) lower than the band gap energy of HLaNb 2 O 7 (3.2 eV), no visible light photoactivity is observed for HLaNb 2 O 7 .…”

In situ construction of Z-scheme g-C3N4/Mg1.1Al0.3Fe0.2O1.7 nanorod heterostructures with high N2 photofixation ability under visible light

“…Because of the poor visible light absorption, the traditional Ti-based semiconductor catalysts show unsatisfactory nitrogen xation ability under visible light. [7][8][9] In recent years, many novel nitrogen-photoxation catalysts are reported successively, including BiOBr (BiOCl), g-C 3 N 4 , multi-metal sulde and FeMoS-Chalcogels. [10][11][12][13][14][15][16] The details of their nding are shown in Table 1.…”