Metal–organic framework derived nanoporous carbons with highly selective adsorption and separation of xenon

2018 ◽  
Vol 6 (28) ◽  
pp. 13696-13704 ◽  
Author(s):  
Youjin Gong ◽  
Yuanming Tang ◽  
Zhenghao Mao ◽  
Xiaonan Wu ◽  
Qiang Liu ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Nuclear Fuel ◽  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Nanoporous Carbons ◽  
Nuclear Fuel Reprocessing ◽  
Metal Organic ◽  
Fuel Reprocessing ◽  
Organic Framework

ZIF-11 derived nanoporous carbons exhibit significantly high Xe adsorption capacity and Xe/Kr selectivity under dilute condition for removal of Xe from nuclear fuel reprocessing plants.

A microporous metal–organic framework with commensurate adsorption and highly selective separation of xenon

2018 ◽  
Vol 6 (11) ◽  
pp. 4752-4758 ◽  
Author(s):  
Shunshun Xiong ◽  
Youjin Gong ◽  
Shuanglin Hu ◽  
Xiaonan Wu ◽  
Wei Li ◽  
...  
Keyword(s):  
Nuclear Fuel ◽  
Metal Organic Framework ◽  
Selective Separation ◽  
Superior Performance ◽  
Xenon Atom ◽  
Adsorption Phenomenon ◽  
Nuclear Fuel Reprocessing ◽  
Metal Organic ◽  
Fuel Reprocessing ◽  
Organic Framework

A microporous metal–organic framework with a suitable pore/cage-like structure of a precise size matching well with the xenon atom exhibits a commensurate adsorption phenomenon of Xe and superior performance for the removal of Xe from nuclear fuel reprocessing plants.

Selective adsorption and separation of C2 hydrocarbons in a “flexible-robust” metal–organic framework based on a guest-dependent gate-opening effect

2020 ◽  
Vol 56 (41) ◽  
pp. 5520-5523
Author(s):  
Peng-Dan Zhang ◽  
Xue-Qian Wu ◽  
Tao He ◽  
Lin-Hua Xie ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Gate Opening ◽  
Metal Organic ◽  
C2 Hydrocarbons ◽  
Organic Framework

The selective adsorption and separation of C2 hydrocarbons have been achieved in a “flexible-robust” MOF based on a guest-dependent gate-opening effect.

scholarly journals Experimental and Modeling of Dicamba Adsorption in Aqueous Medium Using MIL-101(Cr) Metal-Organic Framework

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 419
Author(s):  
Hamza Ahmad Isiyaka ◽  
Khairulazhar Jumbri ◽  
Nonni Soraya Sambudi ◽  
Jun Wei Lim ◽  
Bahruddin Saad ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Adsorption Capacity ◽  
Environmental Concern ◽  
Metal Organic Framework ◽  
High Surface ◽  
High Surface Area ◽  
Data Matrix ◽  
Adsorption Parameters ◽  
Metal Organic ◽  
Organic Framework

Drift deposition of emerging and carcinogenic contaminant dicamba (3,6-dichloro-2-methoxy benzoic acid) has become a major health and environmental concern. Effective removal of dicamba in aqueous medium becomes imperative. This study investigates the adsorption of a promising adsorbent, MIL-101(Cr) metal-organic framework (MOF), for the removal of dicamba in aqueous solution. The adsorbent was hydrothermally synthesized and characterized using N2 adsorption-desorption isotherms, Brunauer, Emmett and Teller (BET), powdered X-ray diffraction (XRD), Fourier Transformed Infrared (FTIR) and field emission scanning electron microscopy (FESEM). Adsorption models such as kinetics, isotherms and thermodynamics were studied to understand details of the adsorption process. The significance and optimization of the data matrix, as well as the multivariate interaction of the adsorption parameters, were determined using response surface methodology (RSM). RSM and artificial neural network (ANN) were used to predict the adsorption capacity. In each of the experimental adsorption conditions used, the ANN gave a better prediction with minimal error than the RSM model. The MIL-101(Cr) adsorbent was recycled six times to determine the possibility of reuse. The results show that MIL-101(Cr) is a very promising adsorbent, in particular due to the high surface area (1439 m2 g−1), rapid equilibration (~25 min), high adsorption capacity (237.384 mg g−1) and high removal efficiency of 99.432%.

Highly selective CO2 separation from a CO2/C2H2 mixture using a diamine-appended metal–organic framework

2021 ◽  
Vol 9 (37) ◽  
pp. 21424-21428
Author(s):  
Doo San Choi ◽  
Dae Won Kim ◽  
Dong Won Kang ◽  
Minjung Kang ◽  
Yun Seok Chae ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Metal Organic Framework ◽  
Co2 Separation ◽  
Metal Organic ◽  
Organic Framework

A diamine-appended metal–organic framework displays a top-tier CO2/C2H2 selectivity, a record-high CO2 adsorption capacity, and recyclability.

A Zn(II)-based pillar-layered metal–organic framework: Synthesis, structure, and CO2 selective adsorption

Polyhedron ◽  
2019 ◽  
Vol 158 ◽  
pp. 283-289 ◽  
Author(s):  
Ya-Huan Zhang ◽  
Jinquan Bai ◽  
Ya Chen ◽  
Xiang-Jing Kong ◽  
Tao He ◽  
...  
Keyword(s):  
Selective Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

scholarly journals Synergistic effect of carboxyl and sulfate groups for effective removal of radioactive strontium ion in a Zr-metal-organic framework

2021 ◽  
Author(s):  
Lin Ren ◽  
Xudong Zhao ◽  
Baosheng Liu ◽  
Hongliang Huang
Keyword(s):  
Adsorption Capacity ◽  
High Efficiency ◽  
Metal Organic Framework ◽  
Maximum Adsorption Capacity ◽  
Potential Candidate ◽  
Dual Groups ◽  
Metal Organic ◽  
Strontium Ion ◽  
Rapid Adsorption ◽  
Organic Framework

Abstract Rapid removal of radioactive strontium from nuclear wastewater is of great significance for environment safety and human health. This work reported the effective adsorption of strontium ion in a stable dual-group metal-organic framework, Zr6(OH)14(BDC-(COOH)2)4(SO4)0.75 (Zr-BDC-COOH-SO4), which contains strontium-chelating groups (-COOH and SO4) and strongly ionizable group (-COOH). Zr-BDC-COOH-SO4 exhibits very rapid adsorption kinetics (<5 min) and a maximum adsorption capacity of 67.5 mg g−1. The adsorption behaviors can be well evaluated by pseudo-second-order model and Langmuir isotherm model. Further investigations indicate that the adsorption of Sr2+ in Zr-BDC-COOH-SO4 would not be interfered by solution pH and adsorption temperature obviously. Feasible regeneration of the adsorbent was also demonstrated through a simple elution method. Mechanism investigation suggests that free -COOH contributes to the rapid adsorption based on electrostatic interaction while introduction of -SO4 can enhance the adsorption capacity largely. Thus, these results suggest that Zr-BDC-COOH-SO4 might be a potential candidate for Sr2+ removal and introducing dual groups is an effective strategy for designing high-efficiency adsorbents.

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