Research progress in metal–organic frameworks (MOFs) in CO2capture from post-combustion coal-fired flue gas: characteristics, preparation, modification and applications
Abstract:In response to the urgency of reducing CO2 emissions, nearly 200 countries have joined the "Paris Agreement". It sets long-term low-carbon development goals, which aim to achieve carbon neutrality in...
“…This method is beneficial to the crystallization of insoluble substances and the synthesis of large size single crystal. [64] For instance, Huang et al [65] firstly put the methanol solution of ligand on top of the ammonia solution of Zn(OH) 2 by diffusion method, and obtained the largesize ZIF8 crystal after several days. At present, it has been reported that this method was also used to prepare ZIF8 nanoparticles with uniform morphology.…”
Metal–organic frameworks (MOFs) have emerged as ideal multifunctional platforms for renewable hydrogen (H2) energy applications owing to their tunable chemical compositions and structures and high porosity. Their advanced component species and porous structure contribute greatly to the enhanced activity, electrical conductivity, photo response, charge‐hole separation efficiency, and structural stability of MOF materials, which are promising for practical H2 economy. In this review, we mainly introduce design strategies for the enhancement of electro‐/photochemical behaviors or adsorption performance of porous MOF materials for H2 production, storage, and utilization from compositional perspective. Following these engineering strategies, the correlation between composition and property‐structure‐performance of pristine MOFs and their composite with advanced components is illustrated. Finally, challenges and directions of future development of related MOFs and MOF composites for H2 economy are provided.
“…This method is beneficial to the crystallization of insoluble substances and the synthesis of large size single crystal. [64] For instance, Huang et al [65] firstly put the methanol solution of ligand on top of the ammonia solution of Zn(OH) 2 by diffusion method, and obtained the largesize ZIF8 crystal after several days. At present, it has been reported that this method was also used to prepare ZIF8 nanoparticles with uniform morphology.…”
Metal–organic frameworks (MOFs) have emerged as ideal multifunctional platforms for renewable hydrogen (H2) energy applications owing to their tunable chemical compositions and structures and high porosity. Their advanced component species and porous structure contribute greatly to the enhanced activity, electrical conductivity, photo response, charge‐hole separation efficiency, and structural stability of MOF materials, which are promising for practical H2 economy. In this review, we mainly introduce design strategies for the enhancement of electro‐/photochemical behaviors or adsorption performance of porous MOF materials for H2 production, storage, and utilization from compositional perspective. Following these engineering strategies, the correlation between composition and property‐structure‐performance of pristine MOFs and their composite with advanced components is illustrated. Finally, challenges and directions of future development of related MOFs and MOF composites for H2 economy are provided.
“…At present, carbon capture, utilization, and storage (CCUS) technology is the most ideal technology to realize large-scale low-carbon emissions of fossil energy . Considering the defects of high energy consumption and high viscosity of traditional industrialized organic amine aqueous solutions, the development of efficient CO 2 adsorbents has become a key problem to be solved urgently in this research field …”
Under favorable regeneration conditions (120 °C, 100% CO 2 ), ultrafast adsorption kinetics and excellent long-term cycle stability are still the biggest obstacles for amine-based solid CO 2 adsorbents. Inspired by natural wood, a biochar with a highly ordered pore structure and excellent thermal conductivity was prepared and used as a carrier of organic amines to prepare ideal CO 2 adsorbents. The results showed that the prepared adsorbent has a very high adsorption working capacity (4.23 mmol CO 2 •g −1 ), and its performance remains stable even after 30 adsorption−desorption cycles in the harsh desorption environment (120 °C, 100% CO 2 ). Due to the existence of the hierarchical structure, the adsorbent exhibited ultra-fast adsorption kinetics, and the reaction rate constant is 37 times higher than that of traditional silica. This adsorbent also showed a very low regeneration heat of 1.64 MJ•kg −1 (CO 2 ), which is especially important for the practical application. Therefore, these biochar-based adsorbents derived from natural wood make the CO 2 capture process promising.
“…The rapid consumption of fossil fuels has caused the continuous increase in carbon dioxide (CO 2 ), which leads to global warming and serious environmental problems. 1,2 Therefore, how to control the continuous increase of CO 2 levels in the atmosphere has become a worldwide problem needing urgent resolution. 3,4 Meanwhile, CO 2 is an inexhaustible, cheap, and nontoxic C1 resource.…”
In this work, a novel Cu(I)-containing metal organic framework named [CuI]-Cu-BTC was easily synthesized via incorporating the Cu(I) active sites onto the surface of Cu-BTC by in-situ templated electrosynthesis using...
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