A facile synthesis of iron functionalized hierarchically porous ZSM-5 and its visible-light photocatalytic degradation of organic pollutants

Abstract

The hierarchically porous and iron-functionalized zeolite ZSM-5 has been fabricated as a Fenton photocatalyst by a facile post-treatment process, which exhibits an excellent visible-light catalytic property in the adsorption/degradation of organic pollutants under mild reaction conditions.

Amorphous Fe2+-rich FeOx loaded in mesoporous silica as a highly efficient heterogeneous Fenton catalyst

“…8,9 In general, there are three types of heterogeneous Fenton systems, that is, natural iron minerals, 10 iron-oxides (Fe@Fe 2 O 3 , 11 Fe 3 O 4 12 etc.) and Fe-immobilized porous materials (such as clay, 13,14 mesoporous silica, 15,16 zeolite 17,18 and carbon 19,20 etc. ).…”

Zeolite encapsulated Ni(ii) and Cu(ii) complexes with tetradentate N2O2 Schiff base ligand: catalytic activity towards oxidation of benzhydrol and degradation of rhodamine-B

“…57 The photogenerated electrons increase the efficiency towards hole formation and minimize band gap energy; meanwhile, the formation of _OH, + _O 2 H and À O 2 radicals starts a cascade of oxidation reactions that can completely convert organic matter in solution into water, carbon dioxide and inorganic compounds. 58,59 From the ESI (Fig. S38 †), the change in hypsochromic shi was around 25 nm, which caused the detachment of the chromophoric group present in the dye molecule and the formation of the de-ethylated intermediates of RhB molecules.…”

Facile preparation and characterization of BiOI–rectorite composite with high adsorptive capacity and photocatalytic activity

“…Since the initial work of Fujishima and Honda in 1972, 6 intense investigation has been dedicated to the development of photocatalysts for the degradation of organic pollutants in water. [7][8][9] When the photocatalyst is exposed to a photon with energy equal to or greater than its band gap energy level, electrons in the conduction band (CB) of the semiconductor can be transferred to the valance band (VB), leaving positive holes in the VB. 10,11 Unfortunately, individual photocatalysts are typically considered to be insufficient to treat wastewater with high concentration.…”