Mesoporous Ca–Mn–O as an efficient scavenger toward organic pollutants and heavy metals: ion exchange provoking ultrafast Fenton-like reaction based on the synergy of alkaline earth/transition metals

Abstract

An elegant synergy of Ca and Mn in CaMnx contributes to efficient purification of solutions containing complex matrices in a short time.

A comprehensive study on removal of cadmium from aqueous solution by using mesoporous SBA-15 functionalized by 1,5-diphenyl carbazide: experimental design, kinetic, thermodynamic, and isotherm aspects

“…Various methods such as ion exchange [21], chemical precipitation [22], flotation [23], ultrafiltration [24], nanofiltration [25], reverse osmosis [26], and electrocoagulation have been used to remove heavy element cations [27]. The adsorption process, among others, proven to be the most practical technique for wastewater treatment [12].…”

Facile 3D Boron Nitride Integrated Electrospun Nanofibrous Membranes for Purging Organic Pollutants

“…Therefore, recycling and reusing water are becoming increasingly important for sustainable utilization of water resources and protection of the environment [1,2,3,4,5]. Many treatment methods are currently available for removing organic pollutants from water, such as reverse osmosis [6], adsorption [6,7,8,9], chemical precipitation [10], coagulation [11,12], electroplating [13], oxidation–reduction [14], and ion exchange [15,16]. Various water treatment methods use adsorption because it is economical, universal, and easy to operate [1,2,3,4,5].…”

Self-Assembly of Mn(II)-Amidoximated PAN Polymeric Beads Complex as Reusable Catalysts for Efficient and Stable Heterogeneous Electro-Fenton Oxidation

“…As Mn 3+ with higher standard reduction potential tends to accept electrons faster than Fe 3+ and thus Mn 2+ is more easily regenerated for catalytic reaction, the behavior of Mn-based complex catalysts was paid more attention in the electro-Fenton oxidation process. 31 The catalytic mechanism of amidoximated PAN (AOPAN) beads was probed to understand the synergetic effect of metallic site and functional groups of support on the enhancement of catalytic performance. The influence of porous structure and properties of a spherical support on the uniform distribution of active sites and metal−support interaction was measured and evaluated.…”

“…The present work intended to investigate the possibility of promoting heterogeneous electro-Fenton technology by using transition-metal ions (Mn, Fe and Co)–PAN polymeric beads complex catalysts. As Mn 3+ with higher standard reduction potential tends to accept electrons faster than Fe 3+ and thus Mn 2+ is more easily regenerated for catalytic reaction, the behavior of Mn-based complex catalysts was paid more attention in the electro-Fenton oxidation process . The catalytic mechanism of amidoximated PAN (AOPAN) beads was probed to understand the synergetic effect of metallic site and functional groups of support on the enhancement of catalytic performance.…”