Enhanced Adsorption and Mass Transfer of Hierarchically Porous Zr-MOF Nanoarchitectures toward Toxic Chemical Removal

2021 ◽  
Author(s):  
Xinbo Wang ◽  
Ruyue Su ◽  
Yue Zhao ◽  
Wenhan Guo ◽  
Song Gao ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Toxic Chemical ◽  
Hierarchically Porous ◽  
Enhanced Adsorption

Regulation of hierarchically porous structures based on multi-scale nanosheets derived from kaolinite for enhanced adsorption

2021 ◽  
Vol 200 ◽  
pp. 105895
Author(s):  
Yongsheng Yu ◽  
Mengnan Yang ◽  
Zhaoli Yan ◽  
Tiantian Li ◽  
Qiangshan Jing ◽  
...  
Keyword(s):  
Porous Structures ◽  
Hierarchically Porous ◽  
Multi Scale ◽  
Enhanced Adsorption

Sorption and Modeling of Mass Transfer of Toxic Chemical Vapors in Activated-Carbon Fiber-Cloth Adsorbers

1998 ◽  
Vol 12 (6) ◽  
pp. 1079-1088 ◽  
Author(s):  
Mehrdad Lordgooei ◽  
Jeremy Sagen ◽  
Mark J. Rood ◽  
Massoud Rostam-Abadi
Keyword(s):  
Mass Transfer ◽  
Activated Carbon ◽  
Carbon Fiber ◽  
Activated Carbon Fiber ◽  
Toxic Chemical ◽  
Carbon Fiber Cloth ◽  
Activated Carbon Fiber Cloth

Hierarchically porous metal–organic frameworks: rapid synthesis and enhanced gas storage

Soft Matter ◽  
2018 ◽  
Vol 14 (47) ◽  
pp. 9589-9598 ◽  
Author(s):  
Chongxiong Duan ◽  
Hang Zhang ◽  
Feier Li ◽  
Jing Xiao ◽  
Shaojuan Luo ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Gas Storage ◽  
Organic Amine ◽  
Rapid Synthesis ◽  
Hierarchically Porous ◽  
Adsorption Capacities ◽  
Metal Organic ◽  
Diffusion Rates ◽  
Enhanced Adsorption

A simple, rapid and versatile method was developed to increase the pore sizes and pore volumes of microporous MOFs (HKUST-1, ZIF-8, ZIF-67, and ZIF-90) by employing organic amine as the template. The resultant hierarchically porous HKUST-1 exhibited significantly enhanced adsorption capacities and faster diffusion rates for CH4 and CO2 gas storage.

scholarly journals Rapid Room-Temperature Preparation of Hierarchically Porous Metal–Organic Frameworks for Efficient Uranium Removal from Aqueous Solutions

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1539 ◽  
Author(s):  
Chongxiong Duan ◽  
Yi Zhang ◽  
Jiexin Li ◽  
Le Kang ◽  
Yawei Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Adsorption Process ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Hierarchically Porous ◽  
Environment And Health ◽  
Effective Removal ◽  
Metal Organic ◽  
Enhanced Adsorption

The effective removal of uranium from an aqueous solution is a highly valuable process for the environment and health. In this study, we developed a facile and rapid method to synthesize hierarchically porous Cu-BTC (RT-Cu-BTC) using a cooperative template strategy. The as-synthesized RT-Cu-BTC exhibited hierarchically porous structure and excellent thermostability, as revealed by X-ray powder diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. Compared with conventional metal–organic frameworks (MOFs) and zeolites, the obtained RT-Cu-BTC exhibited enhanced adsorption capacity (839.7 mg·g−1) and high removal efficiency (99.8%) in the capture of uranium (VI) from aqueous solutions. Furthermore, the conditions such as adsorbent dose, contact time, and temperature in adsorption of uranium (VI) by RT-Cu-BTC were investigated in detail. The thermodynamics data demonstrated the spontaneous and endothermic nature of the uranium (VI) adsorption process. The Langmuir isotherm and pseudo-second-order models could better reflect the adsorption process of uranium (VI) onto RT-Cu-BTC. In addition, the as-synthesized RT-Cu-BTC showed excellent stability in removing uranium (VI) from an aqueous solution. This work provides a facile and rapid approach for fabricating hierarchically porous MOFs to realize a highly efficient removal of uranium (VI) from aqueous systems.

Promotion of hydrogen evolution catalysis by ordered hierarchically porous electrodes

2021 ◽  
Author(s):  
Yihuan Yu ◽  
Pengdong Liu ◽  
Meiling Dou ◽  
Jin Niu ◽  
Zhengping Zhang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Hydrogen Evolution ◽  
Porous Electrodes ◽  
High Current ◽  
Hierarchically Porous ◽  
Current Densities ◽  
And Diffusion

Ru-Based ordered hierarchically porous electrodes promote fast mass transfer and diffusion for hydrogen evolution under high current densities.

Porous polymer catalysts with hierarchical structures

2015 ◽  
Vol 44 (17) ◽  
pp. 6018-6034 ◽  
Author(s):  
Qi Sun ◽  
Zhifeng Dai ◽  
Xiangju Meng ◽  
Feng-Shou Xiao
Keyword(s):  
Mass Transfer ◽  
Heterogeneous Catalysts ◽  
Hierarchical Structures ◽  
Porous Polymer ◽  
Hierarchically Porous ◽  
Highly Efficient

The hierarchically porous polymer catalysts with fast mass transfer provide great opportunities for designing highly efficient heterogeneous catalysts.

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