Adsorption and desorption mechanism of aromatic VOCs onto porous carbon adsorbents for emission control and resource recovery: recent progress and challenges

Abstract

This review highlights the characteristics of adsorption and desorption of aromatic VOCs on various PCAs as well as the integrated technologies for emission control and resource recovery of industrial VOC exhaust.

Boosting VOCs elimination by coupling different techniques

“…Coupling adsorption and photocatalysis for VOC removal is composed of three predominant processes including mass transfer and transportation, surface photoredox reactions, and product desorption [236][237][238][239][240] .…”

“…Up to now, a series of semiconductors such as metal oxides and metal hydroxides have been developed for various photocatalytic applications [234][235][236][237][238] . Metal oxides are major candidates for VOC elimination via adsorption-photocatalysis coupling.…”

Near-infrared light induced adsorption–desorption cycle for VOC recovery by integration of metal–organic frameworks with graphene oxide nanosheets

“…Compared with the commonly used porous adsorbents such as zeolites, activated carbon and silica, metal–organic frameworks (MOFs) have been demonstrated to be an optimal choice for the removal of VOCs. 2,10–14 Beyond large specific surface area and high volume, MOFs as an important class of emerging porous materials possess unique characteristics including highly regular pores, ordered structure, abundant interconnected 3D channels and facile functionalization, 14–16 which are beneficial to exploit advanced VOC adsorbents. Accordingly, a large number of MOF-based adsorbents have been attempted for the VOC removal from polluted air and usually afford relatively excellent adsorption capacities compared with conventional porous adsorbents.…”

Nanostructured micro/mesoporous graphene: removal performance of volatile organic compounds

“…8 A porous material with high adsorptive capacity is signicant for the removal of the VOCs. Porous materials, including porous carbon, 9 zeolites, 10,11 metal-organic frameworks (MOFs), 12,13 porous organic polymer networks, 14 are attracting interest for applications, such as energy storage, 15,16 catalysts, 17 especially for VOCs treatment, owing to their availability, adjustable structure, variety of forms, and large specic surface area (SSA). Carbon materials, such as activated carbon bers and carbon nanotubes, have been extensively used in adsorption because of their high stability, low density, and high SSA, which enhance the removal capacity.…”