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  1. Abstract

    Implementing Paris Climate Accord is inhibited by the high energy consumption of the state-of-the-art CO2capture technologies due to the notoriously slow kinetics in CO2desorption step of CO2capture. To address the challenge, here we report that nanostructured TiO(OH)2as a catalyst is capable of drastically increasing the rates of CO2desorption from spent monoethanolamine (MEA) by over 4500%. This discovery makes CO2capture successful at much lower temperatures, which not only dramatically reduces energy consumption but also amine losses and prevents emission of carcinogenic amine-decomposition byproducts. The catalytic effect of TiO(OH)2is observed with Raman characterization. The stabilities of the catalyst and MEA are confirmed with 50 cyclic CO2sorption and sorption. A possible mechanism is proposed for the TiO(OH)2-catalyzed CO2capture. TiO(OH)2could be a key to the future success of Paris Climat e Accord.

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  2. Carbon nanofibers (CNFs) have wide applications in various high-tech areas. The demand for CNFs can exponentially increase due to the rapid development of advanced functional materials. Accordingly, a transformational progress is being made in synthesizing CNFs, especially functionalized CNFs. A dominant CNF synthesis pathway is catalytic chemical vapor deposition (CCVD). Therefore, the goal of this work is to review the most recent progress in CCVD synthesis of functional CNFs and to understand how the process conditions and catalysts, especially metal catalysts, affect the physical and chemical properties of the produced CNFs. 
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