Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Suraj Donthula"'
Autor:
Katerina Vrettos, Niki Karouta, Panagiotis Loginos, Suraj Donthula, Dimitrios Gournis, Vasilios Georgakilas
Publikováno v:
Frontiers in Materials, Vol 5 (2018)
Aliphatic or aromatic diamines undergo nucleophilic attack on the epoxy groups of graphene oxide under hydrothermal conditions resulting in partial functionalization and partial reduction of the graphenic surface. The overall reaction decreases the s
Externí odkaz:
https://doaj.org/article/4a09889b1d0e4a0585763d0b9c8b3eb2
Autor:
Chariklia Sotiriou-Leventis, Suraj Donthula, Nicholas Leventis, Chandana Mandal, Parwani M. Rewatkar
Publikováno v:
Journal of Sol-Gel Science and Technology. 92:662-680
Silica aerogels are prepared by drying wet-gels under conditions that eliminate surface tension forces, typically by exchanging the pore-filling solvent with liquid or supercritical fluid (SCF) CO2 that is vented off like a gas. Thereby, silica wet-g
Autor:
Chariklia Sotiriou-Leventis, Nicholas Leventis, Adnan Malik Saeed, Suraj Donthula, Hojat Majedi Far, Parwani M. Rewatkar
Publikováno v:
ACS Applied Materials & Interfaces. 11:34292-34304
Polyurethane aerogels were prepared from a rigid aromatic triisocyanate (tris(4-isocyanatophenyl)methane) and cage-shaped α- and β-cyclodextrins as rigid polyols. Gelation was carried out in DMF using dibutyltin dilaurate as catalyst. Wet-gels were
Autor:
Nicholas Leventis, Suraj Donthula, Chariklia Sotiriou-Leventis, Hojat Majedi Far, Adnan Malik Saeed, Chandana Mandal
Publikováno v:
Journal of Sol-Gel Science and Technology. 92:84-100
Silica aerogels are transparent and excellent thermal insulators; however, application in energy-efficient windows has been elusive. The main reason is fragility that renders handling and processing extremely difficult. One way to overcome the fragil
Autor:
Rushi U. Soni, Chandana Mandal, Chariklia Sotiriou-Leventis, Nicholas Leventis, Massimo F. Bertino, Suraj Donthula
Publikováno v:
Journal of Sol-Gel Science and Technology. 90:127-139
TMOS-co-APTES wet-gels have been used as templates for polymer crosslinked aerogels, which in turn have been used as strong materials and as starting materials for ceramic aerogels. Such wet-gels are prepared in acetonitrile (CH3CN) via co-gelation o
Autor:
Tahereh Taghvaee, Naveen Chandrasekaran, Nicholas Leventis, Parwani M. Rewatkar, Adnan Malik Saeed, Theodora Leventis, Suraj Donthula, Chariklia Sotiriou-Leventis, Chandana Mandal, T. K. Shruthi
Publikováno v:
Chemistry of Materials. 30:1635-1647
We report the carbothermal synthesis of sturdy, highly porous (>85%) SiC and Si3N4 monolithic aerogels from compressed polyurea-cross-linked silica xerogel powders. The high porosity in those articles was created via reaction of core silica nanoparti
Autor:
Nicholas Leventis, Chandana Mandal, Chariklia Sotiriou-Leventis, Theodora Leventis, Adnan Malik Saeed, Suraj Donthula, James Schisler
Publikováno v:
Chemistry of Materials. 29:4461-4477
Shape memory polymers (SMPs) remember and return to an original shape when triggered by a suitable stimulus, typically a change in temperature. They are pursued as cost-effective, low-density, higher-strain-tolerant alternatives to shape memory alloy
Autor:
Chandana Mandal, Adnan Malik Saeed, Hojat Majedi Far, Suraj Donthula, Chariklia Sotiriou-Leventis, Parwani M. Rewatkar, Tahereh Taghvaee, Nicholas Leventis
Publikováno v:
ACS Applied Materials & Interfaces. 9:13520-13536
Polymeric aerogels (PA-xx) were synthesized via room-temperature reaction of an aromatic triisocyanate (tris(4-isocyanatophenyl) methane) with pyromellitic acid. Using solid-state CPMAS 13C and 15N NMR, it was found that the skeletal framework of PA-
Autor:
Tahereh Taghvaee, Adnan Malik Saeed, Hojat Majedi Far, Nicholas Leventis, Zachary Garr, Chariklia Sotiriou-Leventis, Suraj Donthula
Publikováno v:
RSC Advances. 7:51104-51120
This paper is a thorough investigation of the chemical transformations during pyrolytic conversion of phenolic resins to carbons, and reports that all carbons obtained from main-stream phenolic resins including phloroglucinol–formaldehyde (FPOL), p
Autor:
Hojat Majedi Far, Nicholas Leventis, Parwani M. Rewatkar, Suraj Donthula, Chariklia Sotiriou-Leventis, Tahereh Taghvaee
Publikováno v:
ACS nano. 13(3)
Morphology is a qualitative property of nanostructured matter and is articulated by visual inspection of micrographs. For deterministic procedures that relate nanomorphology to synthetic conditions, it is necessary to express nano- and microstructure