Adjust the arrangement of imidazole on the metal-organic framework to obtain hybrid proton exchange membrane with long-term stable high proton conductivity

2020 ◽  
Vol 607 ◽  
pp. 118194 ◽  
Author(s):  
Zhenguo Zhang ◽  
Jiahui Ren ◽  
Jingmei Xu ◽  
Zhe Wang ◽  
Wenwen He ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Metal Organic Framework ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
High Proton ◽  
Metal Organic ◽  
Exchange Membrane ◽  
Organic Framework

scholarly journals A Dual-Function Cobalt Metal-Organic Framework for High Proton Conduction and Selective Luminescence Sensing of Histidine

2022 ◽  
Author(s):  
guomei wu ◽  
Wen-Jing Li ◽  
Libin Yang ◽  
chenxi zhang
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Metal Organic Framework ◽  
Composite Membranes ◽  
Proton Exchange ◽  
Dual Function ◽  
Ac Impedance Analysis ◽  
Metal Organic ◽  
Exchange Membrane ◽  
Organic Framework

Abstract Proton exchange membrane (PEM) is a key component of proton exchange membrane fuel cells (PEMFCs). In recent years, metal organic framework (MOF) and its composite membranes have become the research hotspots. [Co(L-Glu)(H2O)•H2O]n (Co-MOF, L-Glu = L-glutamate) was synthesized by hydrothermal method. Co2+ ions are coordinated with L-Glu ligands and water molecules to form one-dimensional chains extending along the a-axis, which are further bridged by L-Glu ligands to form a three-dimensional network structure. AC impedance analysis shows that the proton conductivity of Co-MOF reaches 3.14×10-4 S•cm-1 under 98% relative humidity (RH) and 338 K. To improve proton conductivity, different contents of Co-MOF were added in chitosan (CS) to form composite membranes Co-MOF@CS-X (mass fraction X= 5%, 10%, 15% wt). The results show the proton conductivity of the Co-MOF@CS-10 composite membrane is 1.73×10-3 S•cm-1 at 358 K and 98% RH, which is more than 5 times that of Co-MOF. As far as we known, this is the first composite made of amino acid MOFs and CS as proton exchange membrane. Furthermore, Co-MOF has an obvious quenching effect on L-histidine in aqueous solution, which can detect the content of L-histidine in water with high sensitivity, and the detection limit is 1×10-7 M.

Ba-MOFs with tetrazole-based acetic acids: unusual configuration, novel topology and high proton conductivity

2021 ◽  
Author(s):  
Jie Yang ◽  
Shunlin Zhang ◽  
Zhe Feng ◽  
Ying Cao ◽  
Dunru Zhu
Keyword(s):  
Proton Conductivity ◽  
Proton Exchange Membrane ◽  
Metal Organic Frameworks ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Conductive Materials ◽  
High Proton ◽  
Metal Organic ◽  
Exchange Membrane ◽  
Acetic Acids

Metal-organic frameworks (MOFs) as proton conductive materials have attracted increasing attention due to their applications in proton-exchange membrane fuel cells. While the majority of the MOFs are based on transition...

Ground to conduct: mechanochemical synthesis of a metal–organic framework with high proton conductivity

2015 ◽  
Vol 51 (36) ◽  
pp. 7637-7640 ◽  
Author(s):  
Dariusz Matoga ◽  
Marcin Oszajca ◽  
Marcin Molenda
Keyword(s):  
Proton Conductivity ◽  
Mechanochemical Synthesis ◽  
Metal Organic Framework ◽  
Environmentally Friendly ◽  
High Proton Conductivity ◽  
Proton Conducting ◽  
High Proton ◽  
Metal Organic ◽  
First Time ◽  
Organic Framework

A high proton-conducting metal–organic framework (PCMOF) is prepared for the first time by economical and environmentally-friendly mechanochemistry.

High Proton Conductivity and Spectroscopic Investigations of Metal–Organic Framework Materials Impregnated by Strong Acids

2014 ◽  
Vol 6 (7) ◽  
pp. 5161-5167 ◽  
Author(s):  
Danil N. Dybtsev ◽  
Valentina G. Ponomareva ◽  
Sokhrab B. Aliev ◽  
Alexei P. Chupakhin ◽  
Marsel R. Gallyamov ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Metal Organic Framework ◽  
High Proton Conductivity ◽  
Framework Materials ◽  
Spectroscopic Investigations ◽  
High Proton ◽  
Metal Organic ◽  
Strong Acids ◽  
Organic Framework
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