title: Mesoporous carbon stabilized MgO nanoparticles synthesized by pyrolysis of MgCl2 preloaded waste biomass for highly efficient CO2 capture.
abstract: Anthropogenic CO2 emission makes significant contribution to global climate change and CO2 capture and storage is a currently a preferred technology to change the trajectory toward irreversible global warming. In this work, we reported a new strategy that the inexhaustible MgCl2 in seawater and the abundantly available biomass waste can be utilized to prepare mesoporous carbon stabilized MgO nanoparticles (mPC-MgO) for CO2 capture. The mPC-MgO showed excellent performance in the CO2 capture process with the maximum capacity of 5.45 mol kg(-1), much higher than many other MgO based CO2 trappers. The CO2 capture capacity of the mPC-MgO material kept almost unchanged in 19-run cyclic reuse, and can be regenerated at low temperature. The mechanism for the CO2 capture by the mPC-MgO was investigated by FTIR and XPS, and the results indicated that the high CO2 capture capacity and the favorable selectivity of the as-prepared materials were mainly attributed to their special structure (i.e., surface area, functional groups, and the MgO NPs). This work would open up a new pathway to slow down global warming as well as resolve the pollution of waste biomass.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors.forename: Wu-Jun
authors.initials: WJ
authors.lastname: Liu
authors.forename: Hong
authors.initials: H
authors.lastname: Jiang
authors.forename: Ke
authors.initials: K
authors.lastname: Tian
authors.forename: Yan-Wei
authors.initials: YW
authors.lastname: Ding
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
mesh_terms: D056804:Biofuels; D018533:Biomass; D002245:Carbon Dioxide / Q000737:chemistry*; D015636:Magnesium Chloride / Q000138:chemical synthesis*; D008277:Magnesium Oxide / Q000138:chemical synthesis*; D053758:Nanoparticles / Q000737:chemistry*
chemical_list: D056804:Biofuels; D015636:Magnesium Chloride; D002245:Carbon Dioxide; D008277:Magnesium Oxide