Article
Engineering, Environmental
Haifei An, Weijian Tian, Xin Lu, Huanmei Yuan, Liyun Yang, Hao Zhang, Haoming Shen, Hao Bai
Summary: In this study, a defect-rich hierarchical porous Mg-MOF-74 was synthesized, which showed ligand deletion, increased mesopores and improved CO2 adsorption capacity. The hierarchical porous Mg-MOF-74 has great potential for application in carbon capture technology for industrial flue gas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Gen Li, Mei Wang, Weiqiang Zhou, Xin Liu, Zhi Zhu, Xianghai Song, Pengwei Huo
Summary: In this study, a composite material Zn-atz@COF-TD was developed by combining Zn-atz MOFs with high CO2 adsorption capacity and COF-TD COFs via an imine bond. The resulting composite exhibited significantly enhanced CO2 adsorption capacity and efficient photocatalytic CO2 reduction. The imine bond provided a pathway for charge carrier transfer, facilitating electron-hole separation and migration. This research offers valuable insights into the use of MOFs@COFs-based materials with a core-shell structure in photocatalysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Kun Zheng, Leiping Liao, Yu Zhang, Hua Tan, Jingquan Liu, Chenwei Li, Dedong Jia
Summary: A unique hierarchical core/shell homostructure of LDH material with high capacitance, good rate performance, and cyclic stability has been constructed through in-situ growth and conversion process. The designed supercapacitor also exhibits high energy density.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Jiali Bai, Jiamei Huang, Qiyun Yu, Muslum Demir, Murat Kilic, Bilge Nazli Altay, Xin Hu, Linlin Wang
Summary: In this study, nitrogen-enriched porous carbons were successfully prepared using macadamia nutshell as a carbon precursor, KOH as an activator, and melamine as a nitrogen agent. The resulting porous carbons exhibited enhanced specific surface area and high microporosity with abundant nitrogen functional groups and structural defects. These biomass-based nitrogen-doped carbons showed excellent CO2 adsorption properties, including fast adsorption kinetics, high CO2/N2 selectivity, medium heat of adsorption, outstanding recyclability, and good dynamic CO2 capture capacity. The findings of this study have significant implications for the development of sustainable chemistry and engineering.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Electrochemistry
Shaoshao Jiao, Chen Li, Yaowen Zhang, Jianyang Gao, Zhenjiang Li, Kang Liu, Lei Wang
Summary: Nitrogen-doped porous carbon materials derived from porous organic polymers and metal-organic framework derivatives are prepared as efficient ORR electrocatalysts and supercapacitors. The hierarchical open-structured carbon-nitrogen material obtained by pyrolyzing ZIF-8 in an inert atmosphere exhibits superior activity, stability, and methanol tolerance compared to Pt/C catalysts in both alkaline and acidic media. The NPCs-based supercapacitor shows a high capacitance of 225 F g-1 with good cycling stability (95.75% capacitor retention after 10,000 cycles) in 6 M KOH electrolyte.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Chen-Yen Tsai, Yi-Hsuan Chen, Szetsen Lee, Chia-Her Lin, Chu-Han Chang, Wan-Ting Dai, Wan-Ling Liu
Summary: A SiO2@MOF core-shell microsphere was synthesized for environmentally friendly applications, showing high catalytic activity in the cycloaddition reaction of epoxides. Specifically, SiO2@ZIF-67 achieved a maximum conversion of 97% and could be used for multiple reaction cycles.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Lin Yue, Yunmeng Cao, Yonghui Han, Zaixing Li, Xiao Luo, Yanfang Liu
Summary: The magnetic metal-organic framework composite Fe3O4@Sn-MOF with core-shell structure was successfully prepared by hydrothermal synthesis, showing excellent photocatalytic activity in degrading AR3R dye, attributed to effective charge separation, strong photo-response, and rich active sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Austin R. Lieber, Paul Boone, Yiwen He, Janice A. Steckel, Nathaniel L. Rosi, Christopher E. Wilmer, Katherine M. Hornbostel
Summary: Metal-organic frameworks (MOFs) are potential candidates for direct air carbon capture due to their ability to separate and adsorb specific gases. However, the adsorption of water molecules in the atmosphere can degrade their performance. This study investigates the use of MOF-contained-in-MOF (MOFcMOF) core-shell materials to solve this problem and identifies the highest-performing pellet for water rejection. Parametric simulations are performed to determine the impact of air CO2 concentration, relative humidity, and shell thickness on the core MOF's performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ling Zhang, Jinghua Zhang, Xinglin Li, Cuijie Wang, Ajuan Yu, Shusheng Zhang, Gangfeng Ouyang, Yuanyuan Cui
Summary: A porous core-shell copper hydroxy sulfate@metal-organic framework with surface decoration of 2,5-dimercapto1,3,4-thiadiazol was synthesized for the capture of Hg2+ using a self-template strategy, exhibiting superior adsorption capacity and selectivity. The adsorption behavior followed the Langmuir adsorption model, with a maximum adsorption capacity of 627.6 mg g(-1) for Hg2+ removal, and rapid capture of 99.96% Hg2+ within 10 minutes. XPS and Raman spectra confirmed the selective and strong interaction between Hg2+ and the functional groups on the modified MOF adsorbent.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Dinh Trinh Tran, Tap Huu Van, Yu-chih Tsai, Kun-Yi Andrew Lin, Tuan Dinh Duong
Summary: This study reports the design and fabrication of a cobalt-based catalyst for the hydrolysis of sodium borohydride (NaBH4), which shows excellent catalytic activity and stability. The hierarchical porous hollow core-shell framework cobalt oxide (HCSCO) catalyst exhibits a high H-2 generation rate and a low activation energy. Compared to other catalysts, HCSCO demonstrates superior performance. This research provides a valuable strategy for the synthesis and fabrication of efficient catalysts.
Article
Chemistry, Inorganic & Nuclear
Qiong Bi, Qingxiang Ma, Kai Tao, Lei Han
Summary: In this study, ultrathin Ni-MOF nanosheets were grafted onto Co3O4 nanosheets to create hierarchical core-shell Co3O4@Ni-MOF 2D nanosheet arrays, exhibiting high specific capacity, energy density, and good long-term durability. The unique structure and synergic effects of the core and shell greatly enhance the performance of the Co3O4@Ni-MOF/NF electrode, showing great promise for real energy storage devices.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ye Tian, Zhigao Xue, Qingqing Zhao, Jie Guo, Kai Tao, Lei Han
Summary: In this study, hierarchical core-shell hollow Co3S4@NiCo2O4 nanosheet arrays were constructed on reduced graphene oxide/nickel foam (rGO/NF) through a metal-organic framework (MOF)-engaged strategy, which exhibited significantly improved specific capacitance, rate capability, and cycling durability compared with Co3S4/rGO/NF. Moreover, it was successfully applied in an asymmetric supercapacitor (ASC) with excellent energy density, cycling stability, and coulombic efficiency.
DALTON TRANSACTIONS
(2022)
Article
Nanoscience & Nanotechnology
Xiaohe Wei, Guodong Zhao, Pengfei Feng, Yao Kou, Yu Tang
Summary: This study demonstrates a simplified growth strategy of europium/1,3-benzenedicarboxylic acid (1,3-BDC) MOF on NaYF4:Ce/Tb@NaYF4 nanoparticles through a one-step reaction. By grafting carboxylic acid groups on the surface of nanoparticles, the growth of Eu-MOF is facilitated, resulting in NaYF4:Ce/Tb@NaYF4@Eu-MOF@HPBA nanocomposites. The luminescence lifetime of Tb3+ and Eu3+ can be effectively tuned, providing insights into nanoparticle@MOF hybrid structures for time-resolved anticounterfeiting applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Guiying Xu, Yongying Li, Hui Cheng, Guan Liu, Ziyang Yang, Guo Gao
Summary: A CuO/delta-MnO2 shell was designed to mechanically confine and chemically adsorb soluble LiPSs, with delta-MnO2 effectively catalyzing their conversion to insoluble products, improving the electrochemical performance of lithium-sulfur batteries.
Article
Engineering, Chemical
Seyed Reza Hosseini, Mohammadreza Omidkhah, Zohreh Mehri Lighvan, Somayeh Norouzbahari, Ali Ghadimi
Summary: In this study, a porous ZIF-11@ZIF-8 core-shell composite structure metal-organic framework (MOF) was successfully synthesized using the solvent-assisted linker exchange (SALE) technique. The ZIF-11 acts as the core and enhances the adsorption capacity, while the ZIF-8 provides improved adsorption selectivity. Characterization analyses confirmed the formation of the core-shell structure, and the synthesized MOF exhibited high surface area and micropore volume. The adsorption capacity of CO2 and the adsorption selectivity of CO2/N2 and CO2/CH4 were significantly increased.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)