Browsing by Author "Varma Rajendra"
Now showing 1 - 11 of 11
Results Per Page
Sort Options
- ItemA poly(3-hydroxybutyrate)-chitosan polymer conjugate for the synthesis of safer gold nanoparticles and their applications(Royal Society of Chemistry, 2018) Silvestri Daniele; Waclawek Stanislaw Witold; Sobel Bartłomiej; Torres Mendieta Rafael Omar; Novotný Vít; Nguyen Nhung Anh Huynh; Ševců Alena; Vellora Thekkae Padil Vinod; Müllerová Jana; Stuchlík Martin; Petrangeli Papini Marco; Černík Miroslav; Varma RajendraA facile and eco-friendly approach is developed for the synthesis of a poly(3-hydroxybutyrate)–chitosan (PHB–chit) polymer conjugate, which is an ideal material for the synthesis of safer gold nanoparticles (nAu). The synthesized products are characterized by various electron-based, optical and spectroscopic techniques including the catalytic activity and the stability/toxicity of nAu. In contrast to the conventional synthesis approaches, the use of PHB–chit results in generation of a highly stable and size-controlled nAu material that exhibits important catalytic activity towards the reduction of 4-nitrophenol (4-NP) to 4-aminophenol, and at the same time shows no toxicity against living bacterial systems such as Escherichia coli or Staphylococcus aureus. The synthesis route reported herein would inspire future developments that circumvent toxicity issues of relevance to living systems while performing common catalytic experimentation.
- ItemAdvances in biogenically synthesized shaped metal- and carbon-based nanoarchitectures and their medicinal applications(Elsevier, 2020) Nazarzadeh Zare Ehsan; Vellora Thekkae Padil Vinod; Mokhtari Babak; Venkateshaiah Abhilash; Waclawek Stanislaw Witold; Černík Miroslav; R. Tay Franklin R. Tay; Varma Rajendra; Mackvandi Pooyan
- ItemCinnamomum tamala Leaf Extract Stabilized Zinc Oxide Nanoparticles: A Promising Photocatalyst for Methylene Blue Degradation(MDPI, 2021) Narath Sajina; Karonnan Koroth Supin; Sharath Shankar Sarojini; George Bini; Mutta Vasundhara; Waclawek Stanislaw Witold; Černík Miroslav; Vellora Thekkae Padil Vinod; Varma Rajendra
- ItemCytotoxic aquatic pollutants and their removal by nanocomposite-based sorbents(Elsevier, 2020) Srivastava Varsha; Zare Ehsan Nazarzadeh; Makvandi Pooyan; Zheng Xuan-qi; Iftekhar Sidra; Wu Aimin; Vellora Thekkae Padil Vinod; Mokhtari Babak; Varma Rajendra; Tay Franklin R; Sillanpaa Mika
- ItemEco-Friendly and Economic, Adsorptive Removal of Cationic and Anionic Dyes by Bio-Based Karaya Gum—Chitosan Sponge(MDPI, 2021) Ramakrishnan Rohith Kunjiparambil; Vellora Thekkae Padil Vinod; Waclawek Stanislaw Witold; Černík Miroslav; Varma Rajendra
- ItemElectrospun fibers based on botanical, seaweed, microbial, and animal sourced biomacromolecules and their multidimensional applications(Elsevier, 2021) K. P Akshay Kumar; Nazarzadeh Zare Ehsan; Torres Mendieta Rafael Omar; Waclawek Stanislaw Witold; Makvandi Pooyan; Černík Miroslav; Vellora Thekkae Padil Vinod; Varma Rajendra
- ItemElectrospun fibers based on carbohydrate gum polymers and their multifaceted applications(Elsevier, 2020) Vellora Thekkae Padil Vinod; Young Cheong Jun; Akshay Kumar Padinjareeveettil; Makvandi Pooyan; Nazarzadeh Zare Ehsan; Torres Mendieta Rafael Omar; Waclawek Stanislaw Witold; Černík Miroslav; Kim Il-Doo; Varma Rajendra
- ItemFabrication of a Greener TiO2@Gum Arabic-Carbon Paste Electrode for the Electrochemical Detection of Pb2 Ions in Plastic Toys(ACS, 2020) Kothaplamoottil Sivan Saranya; Sharath Shankar Sarojini; N Sajina; Akshay Kumar Padinjareeveettil; Pilankatta Rajendra; Sameer Kumar V. B.; Mathew Beena; George Bini; Makvandi Pooyan; Černík Miroslav; Vellora Thekkae Padil Vinod; Varma Rajendra
- ItemGum Kondagoagu/Reduced Graphene Oxide Framed Platinum Nanoparticles and Their Catalytic Role(MDPI, 2019) Venkateshaiah Abhilash; Silvestri Daniele; Ramakrishnan Rohith Kunjiparambil; Waclawek Stanislaw Witold; Vellora Thekkae Padil Vinod; Černík Miroslav; Varma Rajendra
- ItemTransforming gum wastes into high tap density micron-sized carbon with ultra-stable high-rate Li storage(Elsevier, 2021) Young Cheong Jun; Venkateshaiah Abhilash; Yun Tae Gwang; Shin Sung-Ho; Černík Miroslav; Vellora Thekkae Padil Vinod; Kim Il-Doo; Varma Rajendra
- ItemTree gum-based renewable materials: Sustainable applications in nanotechnology, biomedical and environmental fields(2018) Vellora Thekkae Padil Vinod; Waclawek Stanislaw; Černík Miroslav; Varma RajendraThe prospective uses of tree gum polysaccharides and their nanostructures in various aspects of food, water, energy, biotechnology, environment and medicine industries, have garnered a great deal of attention recently. In addition to extensive applications of tree gums in food, there are substantial non-food applications of these commercial gums, which have gained widespread attention due to their availability, structural diversity and remarkable properties as ‘green’ bio-based renewable materials. Tree gums are obtainable as natural polysaccharides from various tree genera possessing exceptional properties, including their renewable, biocompatible, biodegradable, and non-toxic nature and their ability to undergo easy chemical modifications. This review focuses on non-food applications of several important commercially available gums (arabic, karaya, tragacanth, ghatti and kondagogu) for the greener synthesis and stabilization of metal/metal oxide NPs, production of electrospun fibers, environmental bioremediation, bio-catalysis, biosensors, coordination complexes of metal–hydrogels, and for antimicrobial and biomedical applications. Furthermore, polysaccharides acquired from botanical, seaweed, animal, and microbial origins are briefly compared with the characteristics of tree gum exudates.