scholarly journals Rational Construction of a Responsive Azo-Functionalized Porous Organic Framework for CO2 Sorption

Molecules ◽  
2021 ◽  
Vol 26 (16) ◽  
pp. 4993
Author(s):  
Rongrong Yuan ◽  
Hao Sun ◽  
Hongming He
Keyword(s):  
Uv Irradiation ◽  
Co2 Adsorption ◽  
Adsorption Property ◽  
Sorption Isotherms ◽  
Bet Surface Area ◽  
Stimuli Responsive ◽  
Co2 Sorption ◽  
Rational Construction ◽  
Porous Organic Framework ◽  
Organic Framework

An azo-functionalized porous organic framework (denoted as JJU-1) was synthesized via FeCl3-promoted oxidative coupling polymerization. By virtue of a porous skeleton and a light/heat responsive azo functional group, this task-specific JJU-1 displays a reversible stimuli-responsive adsorption property triggered by UV irradiation and heat treatment. The initial Brunauer–Emmet–Teller (BET) surface area of this porous material is 467 m2 g–1. The CO2 sorption isotherms exhibit a slight decrease after UV irradiation because of the trans to cis conversion of the azo functional skeleton. It is worth mentioning that the responsive CO2 adsorption performance can be recycled for three cycles via alternating external stimuli, confirming the excellently reversible switchability of trans-to-cis isomerization and controllable CO2 adsorption.

scholarly journals A Novel One-Dimensional Porphyrin-Based Covalent Organic Framework

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3361
Author(s):  
Miao Zhang ◽  
Ruijin Zheng ◽  
Ying Ma ◽  
Ruiping Chen ◽  
Xun Sun ◽  
...  
Keyword(s):  
Pore Size ◽  
Adsorption Capacity ◽  
Surface Area ◽  
Building Block ◽  
Co2 Adsorption ◽  
Bet Surface Area ◽  
One Dimensional ◽  
Covalent Organic Framework ◽  
Co2 Adsorption Capacity ◽  
Organic Framework

A novel one-dimensional covalent organic framework (COF-K) was firstly designed and synthesized through a Schiff-based reaction from a porphyrin building block and a nonlinear right-angle building block. The COF-K exhibited high BET surface area and narrow pore size of 1.25 nm and gave a CO2 adsorption capacity of 89 mg g−1 at 273K and 1bar.

Construction of a Stable Crystalline Polyimide Porous Organic Framework for C 2 H 2 /C 2 H 4 and CO 2 /N 2 Separation

2019 ◽  
Vol 25 (38) ◽  
pp. 9045-9051 ◽  
Author(s):  
Lingchang Jiang ◽  
Pengyuan Wang ◽  
Meiping Li ◽  
Panpan Zhang ◽  
Jialu Li ◽  
...  
Keyword(s):  
Porous Organic Framework ◽  
Organic Framework

scholarly journals Recyclable Catalysts for Alkyne Functionalization

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3525
Author(s):  
Leslie Trigoura ◽  
Yalan Xing ◽  
Bhanu P. S. Chauhan
Keyword(s):  
Supported Catalysts ◽  
Metal Organic Framework ◽  
Metal Nanoparticle ◽  
Homogeneous Catalyst ◽  
Catalyst Recycling ◽  
Catalytic Systems ◽  
Recyclable Catalysts ◽  
Metal Organic ◽  
Porous Organic Framework ◽  
Organic Framework

In this review, we present an assessment of recent advances in alkyne functionalization reactions, classified according to different classes of recyclable catalysts. In this work, we have incorporated and reviewed the activity and selectivity of recyclable catalytic systems such as polysiloxane-encapsulated novel metal nanoparticle-based catalysts, silica–copper-supported nanocatalysts, graphitic carbon-supported nanocatalysts, metal organic framework (MOF) catalysts, porous organic framework (POP) catalysts, bio-material-supported catalysts, and metal/solvent free recyclable catalysts. In addition, several alkyne functionalization reactions have been elucidated to demonstrate the success and efficiency of recyclable catalysts. In addition, this review also provides the fundamental knowledge required for utilization of green catalysts, which can combine the advantageous features of both homogeneous (catalyst modulation) and heterogeneous (catalyst recycling) catalysis.

Preferential adsorption of ethane over ethylene on a Zr-based metal-organic framework: impacts of C-H···N hydrogen bonding

2021 ◽  
Author(s):  
Yaping Zhang ◽  
Daofei Lv ◽  
Jiayu Chen ◽  
Zewei Liu ◽  
Chongxiong Duan ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Surface Area ◽  
Energy Efficient ◽  
Metal Organic Framework ◽  
Bet Surface Area ◽  
Preferential Adsorption ◽  
Metal Organic ◽  
Organic Framework

The separation of ethylene/ethane mixture using energy-efficient technologies is important but challenging. Here, we prepared a Zr-based metal-organic framework (MOF-545) possessing high Brunauer-Emmett-Teller (BET) surface area of 2265.4 m2/g, and...

scholarly journals Metal-Organic Framework-Based Stimuli-Responsive Polymers

2021 ◽  
Vol 5 (4) ◽  
pp. 101
Author(s):  
Menglian Wei ◽  
Yu Wan ◽  
Xueji Zhang
Keyword(s):  
Metal Organic Framework ◽  
Chemical Properties ◽  
Stimuli Responsive ◽  
Guest Molecules ◽  
Stimuli Responsive Polymers ◽  
Responsive Polymers ◽  
Reversible Phase Transition ◽  
Metal Organic ◽  
External Stimuli ◽  
Organic Framework

Metal-organic framework (MOF) based stimuli-responsive polymers (coordination polymers) exhibit reversible phase-transition behavior and demonstrate attractive properties that are capable of altering physical and/or chemical properties upon exposure to external stimuli, including pH, temperature, ions, etc., in a dynamic fashion. Thus, their conformational change can be imitated by the adsorption/desorption of target analytes (guest molecules), temperature or pressure changes, and electromagnetic field manipulation. MOF-based stimuli responsive polymers have received great attention due to their advanced optical properties and variety of applications. Herein, we summarized some recent progress on MOF-based stimuli-responsive polymers (SRPs) classified by physical and chemical responsiveness, including temperature, pressure, electricity, pH, metal ions, gases, alcohol and multi-targets.

Selective CO2 Adsorption By Methyl-Functionalized Metal-Organic Framework

2017 ◽  
Vol 2 (26) ◽  
pp. 7821-7826 ◽  
Author(s):  
Deyun Ma ◽  
Zhi Li ◽  
Fei Jiang ◽  
Yanhua Ma ◽  
Wanchun Lin ◽  
...  
Keyword(s):  
Co2 Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework
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