Enhanced photocatalytic disinfection of E. coli 8099 using Ag/BiOI composite under visible light irradiation

pH-dependent degradation of acid orange II by zero-valent iron in presence of oxygen

“…Subsequently, the hydroxyl radical could be produced in ZVI/O 2 system at lower pH through Fenton reaction. To further confirm the Å OH radical involved in ZVI/O 2 system, the scavenger was used in our experiment to test oxidative species with iso-propanol as Å OH scavenger, since iso-propanol can scavenge rapidly by Å OH (k = 1.9 Â 10 9 M À1 s À1 ) [33,34]. Fig.…”

Enhanced adsorption and photocatalytic activity of BiOI–MWCNT composites towards organic pollutants in aqueous solution

“…BiOI was prepared by EG-assisted solvothermal method based on our previous report [22]. In a typical prepared procedure, the salt of iodine (I) (KI) and bismuth (III) (Bi(NO 3 ) 3 ·5H 2 O) were put into an EG solution with [I]:[Bi] molar ratio of 1:1.…”

“…Especially, BiOI possesses a higher conduction band edge of potential with 0.57 eV (E vb = 2.42 eV, and E cb = 0.57 eV), the photogenerated electrons exited under visible light, could not be trapped generally by oxygen with a relatively lower redox potential. Originally, to enhance the photocatalytic activity, one approach was to deposit BiOI with noble metal such as platinum and silver [20,22]. In this process, the photoelectrons in the conduction band can transfer to the metal deposits which can act as the electron sinks.…”

Ag-decorated Bi2O3 nanospheres with enhanced visible-light-driven photocatalytic activities for water treatment

“…12 Consequently, considerable efforts have been devoted to improve the visible-light-driven photocatalytic ability of single-component photocatalysts by compositing them with other metals or semiconductors. 27 In this study, to improve the photocatalytic performance of Bi 2 O 3 porous nanospheres, uniform Ag/Bi 2 O 3 nanocomposites with different Ag quantities were prepared via the deposition precipitation method. [13][14][15] Bismuth oxide (Bi 2 O 3 ) is an important p-type semiconductor, which demonstrates potential application in photovoltaic cells, optical coating, gas sensing and fuel cells due to its unique physical and chemical properties.…”