Transition metal/metal oxide modified MCM-41 for pollutant degradation and hydrogen energy production: a review

Abstract

In recent years, metal/metal oxide functionalized mesoporous materials have received increasing attention in science and technology due to their fascinating properties, such as a large surface area, mesoscopic bulky shape, and interconnected porous structures enabling them to be one of the most promising materials for catalysis and photo catalysis. This review summarizes the recent developments in design, preparation and applications of transition metal/metal oxide promoted MCM-41 for production of hydrogen energy and removal of aqueous pollutants. After a brief introduction of these materials and synthetic strategies, their characterizations and applications in aqueous pollutant degradation by photocatalysis/photo-Fenton processes and H 2 energy production by photocatalytic water splitting are summarized. Finally, the future perspectives directions for this promising field are also discussed. under the guidance of Dr K. M.

Immobilization of Ru(terpyridine)(2,6‐pyridinedicarboxylate) onto MCM‐41 and its catalysis in the oxidation of alcohols

“…A slight shift of the characteristic reflection to a higher angle and the obvious decrease of the intensity of the peak representing the d100 reflection are observed after the formation of the immobilized complex MCM-41-Ru (D), which may be ascribed to the partial structure collapse of parent MCM-41. [34] Nitrogen adsorption…”

ZnFe2O4‐Decorated Mesoporous Al2O3 Modified MCM‐41: A Solar‐Light‐Active Photocatalyst for the Effective Removal of Phenol and Cr (VI) from Water

“…Mesoporous MCM‐41with a 3D framework is the most promising support because of high surface area, tunable pore geometry and provides a better platform for the adsorption of pollutants in the process of photo‐Fenton. Moreover, the loading of mesoporous Al 2 O 3 nanoparticles (0D) into the framework of MCM‐41 (3D) creates ion‐exchange cites between Al 3+ (53.5 pm) and Si 4+ (40 pm) ions in molecular sieve framework which had been already established in our previous research work . This framework mechanism enables to increase the surface area of the support (1145 m 2 g −1 ) and allows ZnFe 2 O 4 anchored properly onto the surface of the mesoporous support (Al 2 O 3 −MCM‐41).…”

A review on g-C3N4 based photo-catalyst for clean environment

“…Over the past decades semiconducting based visible light driven photocatalytic materials are the most suitable alternative that has attracted the attention of the researchers. Conversion of water into hydrogen is the best technique and regarded as a promising route with a higher efficiency [2,3]. Many photocatalytic systems have been explored for efficient absorption, utilization, and conversion of solar photons in a sustainable and greener mode [4,5].…”