Sustainable Porous Materials for Gas Adsorption Applications; A Concise Review

2013 ◽  
Vol 795 ◽  
pp. 96-101 ◽  
Author(s):  
Hoong Chan Wai ◽  
Mohd Noor Mazlee ◽  
Zainal Arifin Ahmad ◽  
Shamsul Baharin Jamaludin ◽  
Mohd Azlan Mohd Ishak ◽  
...  

Many new sustainable porous materials were developed for gas adsorption applications. Common materials such as activated carbon, clay materials and metal organic framework (MOF) that utilized as potential porous adsorption materials were studied. The article was also discussed on the fabrication methods of porous materials. Adsorptions of flue gas using porous materials were reviewed. It was found that the adsorption properties of porous materials were highly dependent on surface area, selectivity and impregnation. Low cost porous adsorbents such as clay and fly ash were also reviewed as potential and cost effective materials to be used in industries.

2019 ◽  
Author(s):  
Jonathan Carney ◽  
David Roundy ◽  
Cory M. Simon

Metal-organic frameworks (MOFs) are modular and adjustable nano-porous materials with applications in gas storage, separations, and sensing. Flexible/dynamic components that respond to adsorbed gas can give MOFs unique or enhanced adsorption properties. Here, we explore the adsorption properties that could be imparted to a MOF by a rotaxane molecular shuttle (RMS) in its pores. In an RMS-MOF, a macrocyclic wheel is mechanically interlocked with a strut. The wheel shuttles between stations on the strut that are also gas adsorption sites. We pose and analyze a simple statistical thermodynamic model of gas adsorption in an RMS-MOF that accounts for (i) wheel/gas competition for sites on the strut and (ii) the entropy endowed by the shuttling wheel. We determine how the amount of gas adsorbed, position of the wheel, and energy change upon adsorption depend on temperature, pressure, and the interactions of the gas/wheel with the stations. Our model reveals that, compared to an ordinary Langmuir material, the chemistry of the RMS-MOF can be tuned to render adsorption more or less temperature-sensitive and release more or less heat upon adsorption. The model also uncovers a non-monotonic relationship between temperature and the position of the wheel if gas out-competes the wheel for its preferable station.


2011 ◽  
Vol 21 (40) ◽  
pp. 15909 ◽  
Author(s):  
Guojian Ren ◽  
Shuxia Liu ◽  
Fengji Ma ◽  
Feng Wei ◽  
Qun Tang ◽  
...  

2016 ◽  
Vol 45 (3) ◽  
pp. 1233-1242 ◽  
Author(s):  
Miroslav Almáši ◽  
Vladimír Zeleňák ◽  
Arnošt Zukal ◽  
Juraj Kuchár ◽  
Jiří Čejka

A novel 3D metal–organic framework with a diamond-like structure has been synthesised and structurally characterized. Adsorption of Ar, CO2, H2 and N2 has been studied. Heats of CO2 and H2 adsorption were calculated according to the Clausius–Clapeyron equation.


2016 ◽  
Vol 45 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Fangna Dai ◽  
Weidong Fan ◽  
Jiahui Bi ◽  
Peng Jiang ◽  
Dandan Liu ◽  
...  

A 3D non-interpenetrating porous metal–organic framework shows electrocatalytic activity for water oxidation in alkaline solution.


2021 ◽  
Vol 33 (5) ◽  
pp. 956-962
Author(s):  
Chandan Adhikari ◽  
Rehana Farooq

Metal organic frameworks (MOFs) are one of those compounds which have drawn attention in various applications due to their several interesting properties like tunable shape, size, pore size, easy functionalization, high surface area, pore volume, etc. Metal organic frameworks due to their uniform structures, tunable porosity, wide variety and stability on various topology, geometry, dimension and chemical functions of the molecular network give a remarkable structural diversity in comparison to other porous materials. This enables scientists to handle numerous framework structures, porosity and functionality effectively. The unique structural architecture and tunable properties of MOF’s makes them an interesting hybrid material consisting of organic and inorganic materials. MOF can be randomly constructed like Lego bricks and superior in terms of versatility in comparisson to other porous materials. A number of MOFs containing a wide variety of metal e.g. zinc, copper, iron, aluminium, magnesium, chromium, zirconium, gadolinium, manganese are gaining rapid growth in commercial markets for gas storage, adsorption, separation and catalytic applications. This concise review emphasizes various synthetic methods e.g. solvothermal process, hydrothermal synthesis, electrochemical synthesis, microwave synthesis, sonochemical synthesis, mechanochemical synthesis, of metal organic framework developed in the last few decades. It also addresses various applications of metal organic framework e.g. hydrogen storage, gas adsorption, drug delivery systems and bioimaging agents, biocatalysts, biosensors, electrochemical sensors, etc. It also comments on various challenges and futuristic applications of metal organic frameworks in various field e.g. liquid wate management, gaseous waste management, sunlight assisted catalysis, water purification, building materials, electronic devices, battery technologies, targeted drug delivery, solar cells, etc. of science and technology in coming decades.


2016 ◽  
Vol 04 (04) ◽  
pp. 1640014
Author(s):  
Jiating He ◽  
Xu Li

Selective gas adsorption plays an important role in adsorptive separation of gases and scavenging unfavorable or hazardous gases. The use of cost-effective and environmentally friendly materials for selective gas adsorption has become one of the most pressing needs today. The development of new adsorbents is essential but difficult due to the selectivity and efficiency requirements for practical application. As potential scavengers, metal–organic frameworks (MOFs) have drawn great attention. In this review, the current progress of science and technology development of MOFs on selective gas scavenging will be highlighted. Future perspectives for exploring MOFs for practical application will also be put forward.


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