Materials Science, Multidisciplinary, Biotechnology, Energy
49
Scopus Publications
3193
Scholar Citations
23
Scholar h-index
47
Scholar i10-index
Scopus Publications
Synthesis, Characterization and Agronomic Evaluation of ZnO Nanoparticles using Solution Combustion Method Kaila Sindhuja, Ch. Ashok, Ch. Shilpa Chakra, T. Bala Narsaiah, Lakshmana Naik Ramavathu, P. Akhila Swathanthra Asian Journal of Chemistry, 2025 Metal oxides, particularly zinc oxide (ZnO), have sparked widespread interest due to their unique properties. The current research focuses on the solution combustion method for the synthesis of zinc oxide nanoparticles (ZnO NPs), with zinc nitrate as oxidizing agent and ascorbic acid as precursor. The resulting ZnO NPs were analyzed for their crystal structure, particle size, morphology, elemental composition and thermal behaviour using various characterization techniques, including X-ray diffraction (XRD), particle size analysis (PSA), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and thermogravimetric-differential thermal analysis (TG/DTA). Furthermore, the synthesized ZnO NPs were applied to assess their impact on the germination and growth of Vigna radiata (mung bean) seeds. Exposure of V. radiata to varying concentrations of ZnO nanoparticles revealed a concentration-dependent enhancement in plant growth, with the highest height of 29.5 cm observed in Pot-4 by day 20. These results suggest that moderate ZnO NPs applications may stimulate plant development, offering potential agronomic benefits under controlled conditions.
A STUDY OF THE FINE-TUNING OF THE OPTICAL ENERGY BAND GAP AND VARIOUS OPTICAL PARAMETERS WITH THE IMPACT OF GADOLINIUM COMPOSITION IN NGFO FERRITE NANOPARTICLES S. Durga Bhavani, K. Vijaya Kumar, B. Purna Chandra Rao, Ch. Shilpa Chakra, Kiran Kumar Ganta Ukrainian Journal of Physics, 2024 In the present work, gadolinium-doped nickel ferrite nanoparticles with the chemical composition NiFe2−xGdxO4 (X = 0.00, 0.05, 0.10, 0.15, 0.20, and 0.25) have been prepared by the sol-gel auto-combustion method and calcinated at 700 ∘C. The spinel ferrite phase formation was confirmed with the XRD graphs. In all the samples, the typical absorbance peak was observed in between 250–300 nm. Tauc plots were used to calculate the optical energy band gap, found in the range of 4.033–4.144 eV, and it was also calculated using x-ray density to be in the range of 3.690–4.300 eV. Both of them were observed in good agreement with each other, and we conclude that the Gd composition could finely tune the optical energy band gap. The impact of Gd composition was clearly observed on optical parameters. The refractive index, reflectivity, absorption coefficient, optical dielectric constant, and dielectric susceptibility have shown the increasing tendency from 2.1140 to 2.2325, 12.80 to 14.53%, 5.4380 to 6.3032 cm−1, 3.4690 to 3.9840 and 0.2760 to 0.3170, respectively, whereas the transmission coefficient decreased from 0.7730 to 0.7461.
An overview of fuel cells and supercapacitors Shreya Tumma, Divya Velpula, Uday Kumar Adapa, Shirisha Konda, Rakesh Kumar Thida, Madhuri Sakaray, Shilpa Chakra Chidurala, Bala Narasaih Tumma, K. Srilatha Energy Harvesting and Storage Devices Sustainable Materials and Methods, 2023
Adsorption studies and fluoride removal from aqueous solutions by graphene oxide - zinc oxide nanocomposite Digest Journal of Nanomaterials and Biostructures, 2019
Synthesis, characterization, and photocatalytic behaviour of nanocrystalline Zno, TiO2 and Zno/TiO2 nanocomposites Journal of Ovonic Research, 2017
Nanocomposites of ZnO and TiO2 have enhanced antimicrobial and antibacterial properties than their disjoint counterparts Digest Journal of Nanomaterials and Biostructures, 2017
Enhanced power conversion efficiency of dye synthesized solar cell by few layered graphene/cuo nanocomposite as a working electrode Digest Journal of Nanomaterials and Biostructures, 2017
Innovations in smart alloy applications enhancing aerospace and automotive T Shreya, CHS Chakra, TB Narsaiah, D Rakesh Smart Alloys: In Energy, Biomedical, Engineering, Aerospace and Automotive … , 2025 2025
A review of the exploration of nanostructured electrode materials, electrolytes, and performance in metal-ion (Li, Na, K, and Zn) hybrid capacitors N Kitchamsetti, CK Mannem, CS Chakra, ALF de Barros Journal of Energy Storage 106, 114836 , 2025 2025 Citations: 23
Structural, morphological, spectroscopic, and electrochemical properties of Cr doped ZnAl 2 O 4 KK Kumar, TS Kumar, BR Reddy, CS Chakra, K Praveena, S Katlakunta Journal of Sol-Gel Science and Technology 111 (3), 794-805 , 2024 2024 Citations: 8
Self-assembled copper oxide nanoflakes for highly sensitive electrochemical xanthine detection in fish-freshness biosensors G Sriramulu, R Verma, KRB Singh, P Singh, CS Chakra, S Mallick, ... Journal of Molecular Structure 1304, 137640 , 2024 2024 Citations: 14
Impact of surfactant on specific capacitance of nickel oxide nanoparticles for supercapacitor application K John Steven Wesley, K Shireesha, V Divya, D Rakesh, ... Bulletin of Materials Science 47 (1), 30 , 2024 2024 Citations: 7
A study of the fine-tuning of the optical energy band gap and various optical parameters with the impact of gadolinium composition in NGFO ferrite nanoparticles SD Bhavani, KV Kumar, BPC Rao, CS Chakra, KK Ganta Український фізичний журнал, 304-313 , 2024 2024
Bifunctional g-C3N4/carbon nanotubes/WO3 ternary nanohybrids for photocatalytic energy and environmental applications U Bharagav, NR Reddy, VNK Rao, P Ravi, M Sathish, D Rangappa, ... Chemosphere 311, 137030 , 2023 2023 Citations: 60
Synthesis and Characterization of Emerging Nanomaterials C Shilpa Chakra, V Divya, K Shireesha, S Madhuri, T Rakesh Kumar, ... Emerging Materials: Design, Characterization and Applications, 37-102 , 2022 2022 Citations: 6
Sketchy synthesis of Mn3O4, Mn3O4/AC and Mn3O4/CNT composites for application of/in energy cache S Madhuri, CS Chakra, K Sadhana, V Divya Materials Today: Proceedings 65, 2812-2818 , 2022 2022 Citations: 13
Novel NiMgOH-rGO-based nanostructured hybrids for electrochemical energy storage supercapacitor applications: effect of reducing agents K Shireesha, TR Kumar, T Rajani, CS Chakra, MM Kumari, V Divya, ... Crystals 11 (9), 1144 , 2021 2021 Citations: 22
Microwave-irradiated novel mesoporous nickel oxide carbon nanocomposite electrodes for supercapacitor application T Rakesh Kumar, CH Shilpa Chakra, S Madhuri, E Sai Ram, K Ravi Journal of Materials Science: Materials in Electronics 32 (15), 20374-20383 , 2021 2021 Citations: 38
Carbon: A Phantom for Nanocomposite-Driven Applications S Madhuri, C Shilpa Chakra, T Rakesh Kumar, K Shireesha, SK Pavar, ... Carbon Nanomaterial Electronics: Devices and Applications, 77-95 , 2021 2021
Applications of carbon-based nanomaterials in health and environment: biosensors, medicine and water treatment V Divya, SK Pavar, C Shilpa Chakra, T Rakesh Kumar, K Shireesha, ... Carbon Nanomaterial Electronics: Devices and Applications, 261-284 , 2021 2021 Citations: 9
A systematic investigation on the effect of reducing agents towards specific capacitance of NiMg@ OH/reduced graphene oxide nanocomposites K Shireesha, V Divya, G Pranitha, CH Ashok, CC Shilpa, V Himabindu Mater. Technol 37, 1864-1876 , 2021 2021 Citations: 13
A systematic investigation on the effect of Reducing Agents towards Specific Capacitance of NiMg@OH/ Reduced Graphene Oxide Nanocomposites SCCHV Shireesha K, Divya V, Pranitha G, Ashok Ch Materials Technology Advanced Performance Materials , 2021 2021
Effects of Formulated Nano-Urea Hydroxyapatite Slow Release Fertilizer Composite on the Physical, Chemical Properties, Growth and Yield of Cyamopsis tetragonoloba (Cluster Beans) CSC Shylaja Singam.,Rao Mesineni Asian Journal of Chemistry , 2021 2021 Citations: 5
Impact of synthetic strategies for the preparation of polymers and metal-polymer hybrid composites in electrocatalysis applications SCC Divya Velpula, Shireesha Konda, Shireesha Vasukula Synthetic Metals , 2021 2021 Citations: 9
Microwave radiated comparative growths of vanadium pentoxide nanostructures by green and chemical routes for energy storage applications SCC Divya Velpula, Shireesha Konda, Shireesha Vasukula Materials Today: Proceedings , 2021 2021 Citations: 33
Research progress in organic zinc rich primer coatings for cathodic protection of metals – A comprehensive review CSC Ahmed Khalid Hussain , N. Seetharamaiah , Moorthi Pichumani Progress in Organic Coatings , 2021 2021 Citations: 196
Synthesis and characterization of novel binders free high hydrophobic silica nano particles spray MSSCCAC Sai Kumar Pavar,Divya Velpula Materials Today: Proceedings , 2021 2021 Citations: 9
MOST CITED SCHOLAR PUBLICATIONS
Green synthesis of silver nanoparticles using Coffea arabica seed extract and its antibacterial activity V Dhand, L Soumya, S Bharadwaj, S Chakra, D Bhatt, B Sreedhar Materials Science and Engineering: C 58, 36-43 , 2016 2016 Citations: 777
Enhancing adsorption capacity of nano-adsorbents via surface modification: A review M Manyangadze, NHM Chikuruwo, CS Chakra, TB Narsaiah, ... South African Journal of Chemical Engineering 31 (1), 25-32 , 2020 2020 Citations: 271
Synthesis and characterization of graphene oxide and its antimicrobial activity against klebseilla and staphylococus S Bykkam, K Rao, C Chakra, T Thunugunta Int. j. adv. biotechnol. res 4 (1), 142 , 2013 2013 Citations: 227
Research progress in organic zinc rich primer coatings for cathodic protection of metals – A comprehensive review CSC Ahmed Khalid Hussain , N. Seetharamaiah , Moorthi Pichumani Progress in Organic Coatings , 2021 2021 Citations: 196
Green synthesis of TiO2 nanoparticles using Aloe vera extract KG Rao, CH Ashok, KV Rao, CS Chakra, P Tambur Int. J. Adv. Res. Phys. Sci 2 (1A), 28-34 , 2015 2015 Citations: 180
Synthesis of TiO2 nanoparticles from orange fruit waste KG Rao, CH Ashok, KV Rao, CS Chakra, V Rajendar Synthesis 2 (1), 1 , 2015 2015 Citations: 137
Structural properties of MgO nanoparticles: synthesized by co-precipitation technique KG Rao, CH Ashok, KV Rao, CS Chakra International Journal of Science and Research 3 (12), 43-46 , 2014 2014 Citations: 94
Adsorption of lead ions from wastewater using nano silica spheres synthesized on calcium carbonate templates M Manyangadze, NMH Chikuruwo, TB Narsaiah, CS Chakra, G Charis, ... Heliyon 6 (11) , 2020 2020 Citations: 77
Structural analysis of CuO nanomaterials prepared by novel microwave assisted method CH Ashok, KV Rao, CHS Chakra Journal of Atoms and Molecules 4 (5), 803-806 , 2014 2014 Citations: 76
Preparation and characterization of magnetite nanoparticles by sol-gel method for water treatment S Shaker, S Zafarian, CS Chakra, KV Rao International journal of innovative research in science, engineering and … , 2013 2013 Citations: 65
Few layered graphene sheet decorated by ZnO nanoparticles for anti-bacterial application S Bykkam, S Narsingam, M Ahmadipour, T Dayakar, KV Rao, CS Chakra, ... Superlattices and Microstructures 83, 776-784 , 2015 2015 Citations: 61
Bifunctional g-C3N4/carbon nanotubes/WO3 ternary nanohybrids for photocatalytic energy and environmental applications U Bharagav, NR Reddy, VNK Rao, P Ravi, M Sathish, D Rangappa, ... Chemosphere 311, 137030 , 2023 2023 Citations: 60
Green synthesis of TiO2 nanoparticles using hibiscus flower extract KG Rao, CH Ashok, KV Rao, CS Chakra, V Rajendar Proceedings of the international conference on emerging technologies in … , 2014 2014 Citations: 49
Enhanced antimicrobial and anticancer properties of ZnO and TiO 2 nanocomposites CHS Chakra, V Rajendar, KV Rao, M Kumar 3 Biotech 7 (2), 89 , 2017 2017 Citations: 48
Preparation of ZnMn2O4 and ZnMn2O4/graphene nano composites by combustion synthesis for their electrochemical properties P Kommu, GP Singh, CS Chakra, S Jana, V Kumar, AS Bhattacharyya Materials Science and Engineering: B 261, 114647 , 2020 2020 Citations: 46
Ultrasonication assisted thermal exfoliation of graphene-tin oxide nanocomposite material for supercapacitor SR Eedulakanti, AK Gampala, KV Rao, CS Chakra, V Gedela, R Boddula Materials Science for Energy Technologies 2 (3), 372-376 , 2019 2019 Citations: 42
Mgo nanoparticles prepared by microwave-irradiation technique and its seed germination application C Ashok, KV Rao, CS Chakra, KG Rao Nano Trends A J. Nanotechnol. Appl 18, 10-17 , 2016 2016 Citations: 40
Synthesis and characterization of ZnO/CuO nanocomposite for humidity sensor application CH Ashok, KV Rao, CHS Chakra Adv. Mater. Processes 1 (1), 60-64 , 2016 2016 Citations: 40
Microwave-irradiated novel mesoporous nickel oxide carbon nanocomposite electrodes for supercapacitor application T Rakesh Kumar, CH Shilpa Chakra, S Madhuri, E Sai Ram, K Ravi Journal of Materials Science: Materials in Electronics 32 (15), 20374-20383 , 2021 2021 Citations: 38
Calcium oxide nano particles synthesized from chicken egg shells by physical method C Ashok, CS Chakra, T Dayakar, MK Kumar, KV Rao International Conference Emerging Technologies in Mechanical Sciences; Malla … , 2014 2014 Citations: 35