Valorization of pomegranate peel balls as bioadsorbents of methylene blue in aqueous media

Kinetic studies of the removal of methylene blue from aqueous solution by biochar derived from jackfruit peel

“…This pattern was similarly observed by Tan, Sabar andHussin (2018) in their study of MB adsorption from water by oil palm frond microcrystalline cellulose. They suggested that a great deal of vacant adsorption sites are likely available on the surface of the adsorbents in the early stage, leading to a rapid uptake plateau (Msaadi et al 2022). After 80 min, the maximum adsorption and removal e ciency of MB on biochar reached 12.53 mg/g and 60.50%, respectively.…”

Investigation of the structural and electrochemical properties of a ZnO–SnO2 composite and its electrical properties for application in dye-sensitized solar cells

“…As for the third alternative considered, namely SnO 2 , the low open-circuit voltage obtained in SnO 2 nanostructures inhibits the enhancement of power conversion efficiency owing to the high recombination rate. 32 In order to reduce these shortcomings of pure oxides, a viable strategy is doping them with different kinds of crystals 33 or preparing composites by pairing the metal oxides with other semiconducting materials having suitable electronic properties, [34][35][36][37][38][39][40][41][42][43] which subsequently leads to a rise in electron/hole charge separation. Many such composite systems have been studied for their application as photocatalysts.…”

“…Some examples are ZnO-TiO 2 , 34,35 ZnO-CdS, 36 ZnO-AgBr, 37 etc. Recently, ZnO-SnO 2 [38][39][40][41][42][43] composite nanostructures have attracted significant attention for their capacity to boost the photo-catalytic properties of ZnO. This work reports the studies performed on a ZnO-SnO 2 composite prepared by the mechanical mixing method using an agate mortar and a pestle; this composite was employed as a photoanode in a DSSC.…”

“…In order to reduce these shortcomings of pure oxides, a viable strategy is doping them with different kinds of crystals 33 or preparing composites by pairing the metal oxides with other semiconducting materials having suitable electronic properties, 34–43 which subsequently leads to a rise in electron/hole charge separation. Many such composite systems have been studied for their application as photocatalysts.…”

“…Some examples are ZnO–TiO 2 , 34,35 ZnO–CdS, 36 ZnO–AgBr, 37 etc. Recently, ZnO–SnO 2 38–43 composite nanostructures have attracted significant attention for their capacity to boost the photo-catalytic properties of ZnO.…”