http://nopr.niscpr.res.in/handle/123456789/63065 <b>Special Issue: "Advanced Materials for Emerging Technologies" </b> Sat, 10 Oct 2026 22:18:42 GMT 2026-10-10T22:18:42Z https://http://nopr.niscpr.res.in:443/retrieve/191710/Cover.png http://nopr.niscpr.res.in/handle/123456789/63065 http://nopr.niscpr.res.in/handle/123456789/63080 Title: Impact of Synthesis Techniques on the Electrochemical Properties of ZnCo2O4 as Alternative Anode for Lithium-ion Batteries Authors: Rajput, Shivangi; Panwar, Amrish K; Gupta, Amit Abstract: Nowadays, mixed metal oxides like AB2O4-type structures have gained more and more attention as energy storage materials due to their superior electrochemical performance, better structure stability, good electronic conductivity, and excellent reversible capacity. Herein, ZnCo2O4 has been synthesized via two different routes of material synthesis such as urea-assisted combustion and ball milling method. The physicochemical characterization has been carried out with the help of XRD, FESEM, and EDX to confirm the phase, morphology, and elemental composition, respectively. The average crystallite size of ZnCo2O4 via urea-assisted combustion (ZCU) and the ball milled (ZCB) has been observed to be 57 nm and 70 nm as estimated from XRD. The average particle of ZnCo2O4 via urea combustion and the ball mill is20 μm and 49 μm, respectively, as observed by FESEM. The influence of the synthesis route on the electrochemical properties was analyzed via Electrochemical Impedance Spectroscopy and Cyclic Voltammetry. Page(s): 661-666 Fri, 01 Dec 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/63080 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/63079 Title: Enhanced Ferroelectric and Dielectric Properties in Bi0.5Na0.5TiO3 Doped with BaTiO3 (BNT-BT) Nanoparticles for High Energy Storage Device Authors: Kumari, Manju; Dhariwal, Neeraj; Yadav, Preety; Kumar, Vinod; Thakur, O P Abstract: Nanoparticles of lead-free Bi0.5Na0.5TiO3 doped with BaTiO3 (BNT-BT) have been fabricated by the auto-combustion sol-gel method. A structural and morphological analysis of the developed material has been performed by using XRD and FESEM. Also, a temperature and frequency (100Hz-1MHz) dependent dielectric study of BNT-BT nanoparticles has been conducted, resulting in a variation that occurs at 120.83 °C due to transition from ferroelectric to antiferroelectric phase, followed by a sudden increase due to paraelectric phase formation. Additionally, as frequency increased, the dielectric constant decreased exhibiting Maxwell-Wagner polarization. The ferroelectric study has been done by using PE loop at room temperature (28 °C). The maximum value obtained for remanent polarization and saturation polarization is 1.73 μC/cm2 and 3.75 μC/cm2 respectively at an applied electric field of 28 kV/cm. The value for the recoverable energy storage density (W1) is 0.0483 J/cm3, energy loss density(W2) is 0.05378 J/cm3 and its efficiency (Ƞ) is 47% at an applied field 28 kV/cm. The obtained results for the BNT-BT nanoparticles are remarkable for energy storage devices, and they further indicate their potential for energy harvesting and high piezoelectric sensors for industrial purposes. Page(s): 667-670 Fri, 01 Dec 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/63079 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/63078 Title: Sonication-based Nanosuspension formation of Microbial Extract to assess their Antibacterial properties Authors: Singh, Shelly; Dubey, Ashok K; Sharma, Shilpa Abstract: The emergence of antibiotic-resistant bacteria has become a significant public health concern worldwide, necessitating the development of alternative antibacterial agents. In this context, the use of secondary metabolites derived from natural sources is gaining attention as a potential alternative to conventional antibiotics. However, the poor solubility and bioavailability of these compounds limit their clinical use. Nanoparticle formation of secondary metabolites is a promising approach to overcome these limitations, enabling their efficient delivery and targeted action against bacterial pathogens. In this study, we develope a nanoformulation of secondary metabolites with antibacterial properties against WHO-listed priority pathogens using a sonication probe. The nanosuspension is synthesized by combining the secondary metabolites with a biocompatible polymer and is sonicated using a probe sonicator to achieve a uniform nanoparticulate suspension. The resulting nanosuspension is characterized using scanning electron microscopy (SEM), UV-spectroscopy, and Fourier Transform Infrared Spectroscopy (FTIR). The antibacterial properties of the nanosuspension are examined against selected WHO-listed priority pathogens using the zone-inhibition method and by calculating their minimum inhibitory concentration (MIC). The results demonstrate the potent antibacterial effect of nanosuspension against the tested bacterial strains. Additionally, the nanosuspension shows improved solubility, stability, and bioavailability of the secondary metabolites, which are essential factors for their clinical applications. In conclusion, this study highlights the potential of sonication probe-assisted nanoparticle formation as an effective approach for the delivery of secondary metabolites with antibacterial properties against priority pathogens. The findings of this study provide a promising avenue for the advancement of novel antibacterial agents to combat antibiotic-resistant bacterial infections. Page(s): 671-675 Fri, 01 Dec 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/63078 2023-12-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/63077 Title: Investigation of α-Fe2O3 and Cr doped α-Fe2O3 Based Nano-Film as Resistive Switching Material for ReRAM Device Application Authors: Dhariwal, Neeraj; Yadav, Preety; Kumari, Manju; Kumar, Vinod; Thakur, O P Abstract: Ferric oxide (α-Fe2O3) based nanoparticles show a vast number of applications along with resistive switching. In the recent study, we synthesized α-Fe2O3 nanoparticles and Cr3+ doped α-Fe2O3 to see the variation in the resistiveswitching property with chromium doping. XRD and FESEM characterizations have been carried out to confirm the structural and morphological properties of both α-Fe2O3 and CrFeO3 nanoparticles. Optical study has been done by using UV-visible spectroscopy and a decrease in band gap was observed with the chromium doping. I-V characteristics have been studied at room temperature for the synthesized material. The resistive switching effectfor synthesized material is confirmed by applying negative and positive bias voltage for which current shows differentvalues. CrFeO3 shows a larger loop of hysteresis as compared to α-Fe2O3 confirming a better material for ReRAM application. Page(s): 676-680 Fri, 01 Dec 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/63077 2023-12-01T00:00:00Z