Preparation of TiO2-deposited silica-based catalysts for photocatalytic decomposition of chloro-pesticide to environmentally less toxic species

Photocatalytic Degradation of Chlorinated Hydrocarbons: The By-Product of the Petrochemical Industry Using Ag-Cu/Graphite Bimetallic Carbon Nitride

“…Moreover, the SPR effect of metallic Ag and Cu nanoparticles causes the enhancement of the local electromagnetic fields, which speeds up the generation rate of photo-generated electron-hole pairs in the near-surface region of g-C 3 N 4 [49,52,56,57]. The photo-generated electrons can be instantly scavenged by Ag and Cu nanoparticles at the interface of the Ag-Cu/g-C 3 N 4 catalyst, creating a Schottky barrier that effectively reduces the probability of the recombination of photo-generated electron_hole pairs [42,43,58]. Figure 12A-C shows the PL emission spectra of the 50,400, 25,200, and 8400 ppm degradation using 0.3 g/100 mL Ag-Cu/g-C 3 N 4 under the excitation wavelength of 550.6 nm.…”

Green Synthesis of TiO2 Nanoparticles in a Deep Eutectic Solvent for High‐Performance Photocatalysis: The Role of the Cosolvent

“…[3,4] Among the three common polymorphs of TiO 2 , namely anatase, rutile and brookite, anatase TiO 2 (E g = 3.2 eV) exhibits better catalytic efficiency, which is possibly related to the larger reduction potential of photogenerated electrons in anatase than that of other polymorphs. [5] This particular phase has been extensively studied for application in photovoltaic cells, [6] (photo) catalysis, [7][8][9] sensors, [10] Li-ion batteries, [11] capacitors, [12] antimicrobial agents [13] and so on. To maximize the efficacy of TiO 2 in such applications, it is highly desirable to synthesize size-tunable TiO 2 at the nanoscale since material properties such as melting point, fluorescence, optical properties, electrical conductivity, magnetic permeability and chemical reactivity are size-dependent in this size scale.…”

TiO2 Deposited on Activated Sewage Sludge for Effective Photocatalytic Degradation of Tetracycline

“…Secondly, due to the wide bandgap, the TiO 2 material is only excited by ultraviolet (UV) light, limiting its use of sunlight, which contains only ~5 % UV, to initiate the photocatalysis. TiO 2 has been deposited or fixed on various substrates, such as silica, activated carbon, glass fibers, polyurethane, and ceramics, to increase its surface area [30][31][32][33][34][35][36]. However, the photocatalytic activity of the large-surface area TiO 2 was still low due to the wide bandgap energies.…”