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Sustainable Applications of Magnetic Nanocatalysts and N-Enriched Carbonaceous Materials
Citation:
Varma, R. Sustainable Applications of Magnetic Nanocatalysts and N-Enriched Carbonaceous Materials. Presented at 255th American Chemical Society National Meeting & Exposition, New Orleans, Lousiana, March 18 - 22, 2018.
Impact/Purpose:
Abstract for an invited talk in the Environmental section of 255th American Chemical Society National Meeting & Exposition, March 18-22, 2018, New Orleans, LA
Description:
Greener pathways directed to the synthesis of nanoparticles and their numerous applications in chemical transformations and environmental arena are central to this burgeoning field [1]. Vitamins B1, B2, C, beet juice, antioxidants from berries, turmeric and tea- and wine polyphenols, assist in providing viable approach to bulk amounts of nanomaterials [2]. Synthesis via microwave-assisted spontaneous reduction of common metal salts delivers recyclable magnetic nanoferrites from common metal salts. Sustainable route to nanoparticles using waste from winery, or biodiesel byproduct, glycerol [3] and their applications in catalysis as magnetic nano-catalysts or organocatalysis [4], toxicity and environmental remediation [5] will be highlighted; use of nano-catalysts namely Pd, Ni, Ru, Ce, Cu etc. decorating biodegradable and recyclable supports such as chitosan, cellulose or on magnetic ferrites via ligands will be presented [4]. The general utility of heterogenized bimetallic Ag-Pd nanoparticles on graphitic carbon nitride (AgPd@g-C3N4) will be exemplified by visible light assisted transformations using formic acid as a hydrogen source including direct aminoformylation of nitroarenes. C-H activation reactions deploying VO@g-C3N4 catalyst will be emphasized for numerous useful conversions; these strategies exploit the use of byproducts and waste material which can sustainably provide carbonaceous materials of high value for chemical syntheses and transformations. References [1] V. K. Sharma, J. Filip, R. Zboril, R. S. Varma, Chem. Soc. Rev., 44, 8410-8423 (2015); R. S. Varma, Green Chem., 16, 2027-2041 (2014); R. S. Varma, ACS Sustain. Chem. Eng., 4, 5866-5878 (2016). [2] D. Hebbalalu, J. Lalley, M. N. Nadagouda, R.S. Varma, ACS Sustain. Chem. Eng., 1, 703 (2013); (b) R. S. Varma, Curr. Opin. Chem. Eng., 1, 123 (2012). [3] (a) B. Baruwati, R. S. Varma, ChemSusChem, 2, 1041 (2006); (b) J. Kou, R. S. Varma, Chem. Commun., 49, 692 (2013); (c) J. Kou, R. S. Varma, ACS Sustain. Chem. Eng., 1, 810 (2013). [4] R. B. Nasir Baig, M. N. Nadagouda, R. S. Varma, Coord. Chem. Rev., 287, 137 (2015). [5] M. Pelaez, B. Baruwati, R. S. Varma, R. Luque, D. D. Dionysiou, Chem. Commun. 49, 10118 (2013); J. Virkutyte, R. S. Varma ACS Sustain. Chem. Eng., 2, 1545 (2014).