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624 results on '"Thallapally, Praveen K."'

153. An Electrically Switchable Metal-Organic Framework

Author

Fernandez, Carlos A., primary, Martin, Paul C., additional, Schaef, Todd, additional, Bowden, Mark E., additional, Thallapally, Praveen K., additional, Dang, Liem, additional, Xu, Wu, additional, Chen, Xilin, additional, and McGrail, B. Peter, additional

Published
2014
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155. Separation of rare gases and chiral molecules by selective binding in porous organic cages

Author

Chen, Linjiang, primary, Reiss, Paul S., additional, Chong, Samantha Y., additional, Holden, Daniel, additional, Jelfs, Kim E., additional, Hasell, Tom, additional, Little, Marc A., additional, Kewley, Adam, additional, Briggs, Michael E., additional, Stephenson, Andrew, additional, Thomas, K. Mark, additional, Armstrong, Jayne A., additional, Bell, Jon, additional, Busto, Jose, additional, Noel, Raymond, additional, Liu, Jian, additional, Strachan, Denis M., additional, Thallapally, Praveen K., additional, and Cooper, Andrew I., additional

Published
2014
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156. Fluorocarbon adsorption in hierarchical porous frameworks

Author

Motkuri, Radha Kishan, primary, Annapureddy, Harsha V. R., additional, Vijaykumar, M., additional, Schaef, H. Todd, additional, Martin, Paul F., additional, McGrail, B. Peter, additional, Dang, Liem X., additional, Krishna, Rajamani, additional, and Thallapally, Praveen K., additional

Published
2014
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157. Introduction of π-Complexation into Porous Aromatic Framework for Highly Selective Adsorption of Ethylene over Ethane

Author

Li, Baiyan, primary, Zhang, Yiming, additional, Krishna, Rajamani, additional, Yao, Kexin, additional, Han, Yu, additional, Wu, Zili, additional, Ma, Dingxuan, additional, Shi, Zhan, additional, Pham, Tony, additional, Space, Brian, additional, Liu, Jian, additional, Thallapally, Praveen K., additional, Liu, Jun, additional, Chrzanowski, Matthew, additional, and Ma, Shengqian, additional

Published
2014
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158. In Situ One-Step Synthesis of Hierarchical Nitrogen-Doped Porous Carbon for High-Performance Supercapacitors

Author

Jeon, Ju-Won, primary, Sharma, Ronish, additional, Meduri, Praveen, additional, Arey, Bruce W., additional, Schaef, Herbert T., additional, Lutkenhaus, Jodie L., additional, Lemmon, John P., additional, Thallapally, Praveen K., additional, Nandasiri, Manjula I., additional, McGrail, Benard Peter, additional, and Nune, Satish K., additional

Published
2014
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164. Removal of TcO4− ions from solution: materials and future outlook.

Author

Banerjee, Debasis, Kim, Dongsang, Schweiger, Michael J., Kruger, Albert A., and Thallapally, Praveen K.

Subjects
TECHNETIUM, NUCLEAR fission, RADIOACTIVE wastes, POLLUTANTS, ION exchange (Chemistry), OXYANIONS
Abstract

Technetium mainly forms during artificial nuclear fission; it exists primarily as TcO4− in nuclear waste, and it is among the most hazardous radiation-derived contaminants because of its long half-life (t1/2 = 2.13 × 105 years) and environmental mobility. The high water solubility of TcO4− (11.3 mol L−1 at 20 °C) and its ability to readily migrate within the upper layer of the Earth's crust make it particularly hazardous. Several types of materials, namely resins, molecular complexes, layered double hydroxides, and pure inorganic and metal–organic materials, have been shown to be capable of capturing TcO4− (or other oxoanions) from solution. In this review, we give a brief description about the types of materials that have been used to capture TcO4− and closely related oxyanions so far and discuss the possibility of using metal–organic frameworks (MOFs) as next-generation ion-exchange materials for the stated application. In particular, with the advent of ultra-stable MOF materials, in conjunction with their chemical tunability, MOFs can be applied to capture these oxyanions under real-life conditions. [ABSTRACT FROM AUTHOR]

Published
2016
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165. Selective CO2 Adsorption in a Supramolecular Organic Framework.

Author

Patil, Rahul S., Banerjee, Debasis, Zhang, Chen, Thallapally, Praveen K., and Atwood, Jerry L.

Subjects
CARBON dioxide, GAS absorption & adsorption, HYDROGEN bonding, SUPRAMOLECULES, MOLECULAR interactions
Abstract

Considering the rapidly rising CO2 level, there is a constant need for versatile materials which can selectively adsorb CO2 at low cost. The quest for efficient sorptive materials is still on since the practical applications of conventional porous materials possess certain limitations. In that context, we designed, synthesized, and characterized two novel supramolecular organic frameworks based on C-pentylpyrogallol[4]arene (PgC5) with spacer molecules, such as 4,4′-bipyridine (bpy). Highly optimized and symmetric intermolecular hydrogen-bonding interactions between the main building blocks and comparatively weak van der Waals interactions between solvent molecules and PgC5 leads to the formation of robust extended frameworks, which withstand solvent evacuation from the crystal lattice. The evacuated framework shows excellent affinity for carbon dioxide over nitrogen and adsorbs ca. 3 wt % of CO2 at ambient temperature and pressure. [ABSTRACT FROM AUTHOR]

Published
2016
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