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metal-organic framework UiO-66-NH2 and cellulose nanofibers mat for high-performance adsorption of dye rosebengal

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9, Pages 1387-1398 doi: 10.1007/s11705-022-2154-2

Abstract: combine with UiO-66-NH₂ by the method of in-situ growth to remove the toxic dye, rosebengal.Through the analysis of adsorption kinetics and isotherms, the adsorption for rose bengal is mainly suitable

Keywords： UiO-66-NH₂ cellulose nanofibers rose bengal adsorption mechanism

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Harnessing the Beneficial Attributes of Ceria and Titania in a Mixed-Oxide Support for Nickel-Catalyzed Photothermal CO₂ Methanation Article

Ee Teng Kho,Salina Jantarang,Zhaoke Zheng,Jason Scott,Rose Amal

Engineering 2017, Volume 3, Issue 3, Pages 393-401 doi: 10.1016/J.ENG.2017.03.016

Abstract:

Solar-powered carbon dioxide (CO₂)-to-fuel conversion presents itself as an ideal solution for both CO₂ mitigation and the rapidly growing world energy demand. In this work, the heating effect of light irradiation onto a bed of supported nickel (Ni) catalyst was utilized to facilitate CO₂ conversion. Ceria (CeO₂)-titania (TiO₂) oxide supports of different compositions were employed and their effects on photothermal CO₂ conversion examined. Two factors are shown to be crucial for instigating photothermal CO₂ methanation activity: ① Fine nickel deposits are required for both higher active catalyst area and greater light absorption capacity for the initial heating of the catalyst bed; and ② the presence of defect sites on the support are necessary to promote adsorption of CO₂ for its subsequent activation. Titania inclusion within the support plays a crucial role in maintaining the oxygen vacancy defect sites on the (titanium-doped) cerium oxide. The combination of elevated light absorption and stabilized reduced states for CO₂ adsorption subsequently invokes effective photothermal CO₂ methanation when the ceria and titania are blended in the ideal ratio(s).

Keywords： Photothermal CO₂ reduction Nickel Ceria Titania