TiO2-supported Ag nanoclusters with enhanced visible light activity for the photocatalytic removal of NO

New Porous High Surface Area, TiO2 Anatase/SAPO‐35 Mild Brønsted Acidic Nanocomposite: Synthesis, Characterization and Studies on it's Enhanced Photocatalytic Activity.

“…To tackle this problem researchers have been working to find various methods for instance photocatalysis. Photocatalysis is a method in which the selected photocatalysts absorb the photons from the light source and degrades the organic/inorganic pollutants by generating electron‐hole pairs . Researchers have developed various photocatalysts in which, Metal oxide based semiconductors are widely studied for the application of environmental protection such as polluted water treatment.…”

A Critical Review of Recent Progress and Perspective in Practical Denitration Application

“…It is the most commonly used catalytic material in photocatalytic reaction. Duan et al [111] found that a small amount of Ag nanoclusters supported on TiO 2 was beneficial to improve photocatalytic activity. He et al [112] synthesized carbon-encapsulated nanocrystalline TiO 2 catalyst, which achieved 71% NO conversion under visible light.…”

“…x FOR PEER REVIEW 22 of (a) Reaction pathways of NO + H2 and products on Pd (111), (b) potential energy diagram and geometrical structure of H atom-assisted direct dissociation of NO on Pd(111), and (c,d) relative selectivity of N2, NH3, N2O, and H2O at different temperatures[212]. Reproduced from Ref [212],.…”

Preparation and visible-light photocatalytic properties of the floating hollow glass microspheres – TiO2/Ag3PO4 composites

“…Since Fujishima and Honda used TiO 2 electrodes for photocatalytic decomposition of water under ultraviolet light for the rst time in 1972, signicant advances have been made in the design of Z-scheme photocathodes 2 and research on highefficiency semiconductor photocatalysts. [3][4][5][6][7][8][9] In recent years, various types of semiconductor photocatalysts, such as In this paper, low-density hollow glass microspheres (HGMs) were used as carriers, and TiO 2 was loaded on the surface of HGMs by hydrothermal method at rst, and then oating HGMs-TiO 2 /Ag 3 PO 4 composites were prepared by ion exchange method with Ag 3 PO 4 . The as-prepared oating photocatalyst enlarge the contact area between the photocatalyst and light on the one hand, and on the other hand, both the synergistic effect of TiO 2 and Ag 3 PO 4 semiconductor and the formation of surface heterojunction can promote the e À -h + charge separation, thus the photocatalytic activity and stability of the photocatalyst is further enhanced.…”

“…When the content of Ag 3 PO 4 exceeds this optimum value, the counteraction effect associated with e Àh + recombination across TiO 2 /Ag 3 PO 4 interface may mediate carrier transfer to compromise the overall charge separation efficiency and lead to the depressed photocatalytic efficiency of type-II TiO 2 /Ag 3 PO 4 semiconductor heterostructures 13. At the same time, the oxidizing h + in VB can directly oxidize the organic dye MB or indirectly oxidize MB by oxidizing H 2 O molecules adsorbed to the surface of the photocatalyst to form strong oxidizing $OH radicals44,45 in that the VB level of TiO 2 is more positive than both 1.99 eV for OH À /$OH and 2.37 eV for H 2 O/$OH 6. Furthermore, reducing e À in CB can reduce the adsorbed O 2 molecules, and generate strong oxidizing reactive oxygen species (ROS, such as $O2 À , HO 2 c, H 2 O 2 , $OH, etc.)…”