Deep eutectic solvents appended to UiO-66 type metal organic frameworks: Preserved open metal sites and extra adsorption sites for CO2 capture

2019 ◽  
Vol 480 ◽  
pp. 770-778 ◽  
Author(s):  
Zhong Li ◽  
Wenzhe Sun ◽  
Chong Chen ◽  
Qirui Guo ◽  
Xue Li ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Metal Organic Frameworks ◽  
Deep Eutectic Solvents ◽  
Adsorption Sites ◽  
Open Metal Sites ◽  
Metal Organic

Inquiry for the multifunctional design of metal–organic frameworks: in situ equipping additional open metal sites (OMSs) inducing high CO2 capture/conversion abilities

2021 ◽  
Author(s):  
Mingwei Jia ◽  
Jiantang Li ◽  
Jiaming Gu ◽  
Lirong Zhang ◽  
Yunling Liu
Keyword(s):  
Co2 Capture ◽  
Metal Organic Frameworks ◽  
High Co2 ◽  
Synergistic Catalysis ◽  
Open Metal Sites ◽  
Metal Organic ◽  
Multifunctional Design

On the basis of in situ fabricating multifunctional MOFs, a binuclear Co-MOF with open cobalt sites was accomplished. The multifunctional sites afforded increased CO2 uptake, together with the synergistic catalysis in promoting the CO2 conversion.

Tuning the Redox Activity of Metal−Organic Frameworks for Enhanced, Selective O2 Binding

2019 ◽  
Author(s):  
Andrew Rosen ◽  
M. Rasel Mian ◽  
Timur Islamoglu ◽  
Haoyuan Chen ◽  
Omar Farha ◽  
...  
Keyword(s):  
Density Functional ◽  
Metal Organic Frameworks ◽  
Redox Activity ◽  
Screening Methods ◽  
Bridging Ligands ◽  
Metal Centers ◽  
Computational Screening ◽  
Open Metal Sites ◽  
Metal Organic ◽  
Unsaturated Metal Sites

<p>Metal−organic frameworks (MOFs) with coordinatively unsaturated metal sites are appealing as adsorbent materials due to their tunable functionality and ability to selectively bind small molecules. Through the use of computational screening methods based on periodic density functional theory, we investigate O<sub>2</sub> and N<sub>2</sub> adsorption at the coordinatively unsaturated metal sites of several MOF families. A variety of design handles are identified that can be used to modify the redox activity of the metal centers, including changing the functionalization of the linkers (replacing oxido donors with sulfido donors), anion exchange of bridging ligands (considering μ-Br<sup>-</sup>, μ-Cl<sup>-</sup>, μ-F<sup>-</sup>, μ-SH<sup>-</sup>, or μ-OH<sup>-</sup> groups), and altering the formal oxidation state of the metal. As a result, we show that it is possible to tune the O<sub>2</sub> affinity at the open metal sites of MOFs for applications involving the strong and/or selective binding of O<sub>2</sub>. In contrast with O<sub>2</sub> adsorption, N<sub>2</sub> adsorption at open metal sites is predicted to be relatively weak across the MOF dataset, with the exception of MOFs containing synthetically elusive V<sup>2+</sup> open metal sites. As one example from the screening study, we predict that exchanging the μ-Cl<sup>-</sup> ligands of M<sub>2</sub>Cl<sub>2</sub>(BBTA) (H<sub>2</sub>BBTA = 1<i>H</i>,5<i>H</i>-benzo(1,2-d:4,5-d′)bistriazole) with μ-OH<sup>-</sup> groups would significantly enhance the strength of O<sub>2</sub> adsorption at the open metal sites without a corresponding increase in the N<sub>2</sub> affinity. Experimental investigation of Co<sub>2</sub>Cl<sub>2</sub>(BBTA) and Co<sub>2</sub>(OH)<sub>2</sub>(BBTA) confirms that the former exhibits only weak physisorption, whereas the latter is capable of chemisorbing O<sub>2</sub> at room temperature. The chemisorption behavior is attributed to the greater electron-donating character of the μ-OH<sup>-</sup><sub> </sub>ligands and the presence of H-bonding interactions between the μ-OH<sup>-</sup> bridging ligands and the O<sub>2</sub> adsorbate.</p>

CO2 capture enhancement in MOFs via the confinement of molecules

2021 ◽  
Author(s):  
Ilich A. Ibarra ◽  
Eduardo González-Zamora ◽  
Alejandro Islas-Jácome ◽  
Alfredo López-Olvera ◽  
Vanessa del C. Cotlame-Salinas
Keyword(s):  
Co2 Capture ◽  
Greenhouse Effect ◽  
Metal Organic Frameworks ◽  
Pore Shape ◽  
Metal Organic

Metal-organic frameworks (MOFs) have become the most promising molecular sponges to capture gases from the greenhouse effect, e.g. CO2, due to various desirable features such as tuneable pore shape, size...

Transforming Metal–Organic Frameworks into Porous Liquids via a Covalent Linkage Strategy for CO2 Capture

2021 ◽  
Author(s):  
Dechao Wang ◽  
Yangyang Xin ◽  
Xiaoqian Li ◽  
Hailong Ning ◽  
Yudeng Wang ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Metal Organic Frameworks ◽  
Covalent Linkage ◽  
Metal Organic

Enzyme-embedded metal–organic framework membranes on polymeric substrates for efficient CO2 capture

2017 ◽  
Vol 5 (37) ◽  
pp. 19954-19962 ◽  
Author(s):  
Yiming Zhang ◽  
Huixian Wang ◽  
Jindun Liu ◽  
Jingwei Hou ◽  
Yatao Zhang
Keyword(s):  
Carbonic Anhydrase ◽  
Co2 Capture ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Chemical Bonds ◽  
The Poor ◽  
Physical Absorption ◽  
Metal Organic ◽  
Enzymatic Inactivation ◽  
Polymeric Substrates

In this work, carbonic anhydrase (CA) molecules were embedded into metal–organic frameworks (MOFs) via physical absorption and chemical bonds, which could overcome the enzymatic inactivation and the poor separation property of pristine MOF materials.

scholarly journals Innenrücktitelbild: Understanding CO2Dynamics in Metal-Organic Frameworks with Open Metal Sites (Angew. Chem. 16/2013)

2013 ◽  
Vol 125 (16) ◽  
pp. 4589-4589
Author(s):  
Li-Chiang Lin ◽  
Jihan Kim ◽  
Xueqian Kong ◽  
Eric Scott ◽  
Thomas M. McDonald ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Open Metal Sites ◽  
Metal Organic

A Series of Metal–Organic Frameworks for Selective CO2 Capture and Catalytic Oxidative Carboxylation of Olefins

2018 ◽  
Vol 57 (21) ◽  
pp. 13772-13782 ◽  
Author(s):  
Huong T. D. Nguyen ◽  
Y. B. N. Tran ◽  
Hung N. Nguyen ◽  
Tranh C. Nguyen ◽  
Felipe Gándara ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Metal Organic Frameworks ◽  
Metal Organic

A high-performance Co-MOF non-enzymatic electrochemical sensor for glucose detection

2021 ◽  
Author(s):  
Zhen-Zhen Ma ◽  
Yao Ma ◽  
Bing Liu ◽  
Ling Xu ◽  
Huan Jiao
Keyword(s):  
Electrochemical Sensor ◽  
Terephthalic Acid ◽  
High Performance ◽  
Metal Organic Frameworks ◽  
Deep Eutectic Solvents ◽  
Cobalt Metal ◽  
Glucose Detection ◽  
Metal Organic

Two cobalt metal-organic frameworks (Co-MOFs), [Ch]2[Co3(BDC)3Cl2] (1) and [Ch]2[Co3(BDC)4]·2DMU (2) (Ch+ = choline cation; H2BDC = terephthalic acid; DMU = 1,3-dimethylurea), were prepared through ionothermal reactions with deep eutectic solvents...

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