Explore the vast range of titles available.

This article explores the phyto-synthesis of silver nanoparticles (Ag NPs) derived from the floral extract of Punica granatum and their potential applications in antibacterial and anticancer treatments. In the synthesis process, silver nitrate (AgNO3) has been utilized as both a reducing and stabilizing agent, leading to the successful formation of stable silver nanoparticles (PG-Ag NPs). The nanoparticles were characterized using various analytical techniques, revealing their spherical shape and uniform dispersion, with an average size of ~ 27 (± 2) nm. The antibacterial and anticancer properties of the PG-AgNPs have been investigated, demonstrating significant anticancer activity with an IC50 value of ~ 13 µg/mL. Furthermore, the nanoparticles exhibited potent antimicrobial efficacy against Escherichia coli and Staphylococcus aureus. These findings indicate that PG-Ag NPs, synthesized from Punica granatum flower extract, present a promising and cost-effective solution for antibacterial and anticancer applications.

In this study, we have developed an environment friendly and novel approach for the synthesis of silver nanoparticles utilising plumeria pudica leaf extract. In this technique, the leaf extract was employed as both a reducing agent for the reduction of a silver nitrate (AgNO 3 ) solution and a capping agent, leading to the synthesis of silver nanoparticles (Ag NPs). The outcomes of these analyses revealed an average particle size of ∼19 nm as determined by SEM, while XRD measurements indicated a crystalline domain size of ∼12 nm and a lattice parameter of approximately 4.087467 Å. Furthermore, the anti-cancer potential of the synthesised silver nanoparticles was evaluated, unveiling an IC50 value of around 28 µM. This suggests that the introduced silver nanoparticles may have triggered apoptosis, consequently inducing cell death. These findings underscore the potential of utilising environmentally benign silver nanoparticles in lung cancer chemotherapy.

In this study, pristine MoS2 and MoS2/reduced graphene oxide (rGO) nanocomposites were synthesized using hydrothermal process. Different concentrations of graphene oxide (GO) precursor were used during the synthesis process. The electrochemical performance of the prepared composites was investigated in 1 M solution of H2SO4 on copper foil. The physico-chemical analysis affirms the systematic growth of MoS2 nanoflowers on rGO nanosheets. Furthermore, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurement of MoS2 and MoS2/rGO nanocomposites were carried out. The CV and EIS measurements indicate that the charge transfer and specific capacitance (Csp) initially deteriorated slightly with low concentration of GO during synthesis, but with further increase in GO concentration, both parameters showed significant improvement compared to pristine MoS2. The MP demonstrated Csp of 193.50 Fg−1 at 5 mVs−1, whereas MG100 nanocomposite demonstrates higher Csp of 587.2 Fg−1 at same scan rate.

Effect of nitrogen (N+) ion implantation on the morphological, structural, optical, and compositional properties of vanadium pentoxide (V2O5) thin films grown on glass substrates is studied. Surface morphology shows the formation of grains and the growth dynamics is governed by roughness (α) and growth (β) exponents. X-ray diffraction studies reveal that V2O5 exists in a hybrid form, with properties of both the orthorhombic and tetragonal phases. Ion implantation induces defects and strain in V2O5 thin films causing a reduction in crystalline properties and deformation in the β-phase with a corresponding change in crystallite size. Contact angle wetting properties are found to be co-related with fractal growth of the films under ion implantation. Oxygen vacancies and electron scattering/trapping centres are revealed to have increased after N+ implantation, leading to a smaller bandgap in the thin films. The benefits of decreasing the optical band-gap of V2O5 thin films for optical applications are outlined in the present work.

The employment of versatile bacterial strains for the efficient degradation of carcinogenic textile dyes is a sustainable technology of bioremediation for a neat, clean, and evergreen globe. The present study has explored the eco-friendly degradation of complex Reactive Green 12 azo dye to its non-toxic metabolites for safe disposal in an open environment. The bacterial degradation was performed with the variable concentrations (50, 100, 200, 400, and 500 mg/L) of Reactive Green 12 dye. The degradation and toxicity of the dye were validated by high-performance liquid chromatography, Fourier infrared spectroscopy analysis, and phytotoxicity and genotoxicity assay, respectively. The highest 97.8% decolorization was achieved within 12 h. Alternations in the peaks and retentions, thus, along with modifications in the functional groups and chemical bonds, confirmed the degradation of Reactive Green 12. The disappearance of a major peak at 1450 cm−1 corresponding to the –N=N– azo link validated the breaking of azo bonds and degradation of the parent dye. The 100% germination of Triticum aestivum seed and healthy growth of plants verified the lost toxicity of degraded dye. Moreover, the chromosomal aberration of Allium cepa root cell treatment also validated the removal of toxicity through bacterial degradation. Thereafter, for efficient degradation of textile dye, the bacterium is recommended for adaptation to the sustainable degradation of dye and wastewater for further application of degraded metabolites in crop irrigation for sustainable agriculture.

We report here the effect of fullerene (C 60 ) incorporation on the growth of CH 3 NH 3 PbI 3 perovskite crystals and the effect on photovoltaic performance of perovskite solar cells (PSCs) prepared in inverse geometry. Incorporation of C 60 induced the growth of larger gains and compact thin film of perovskite with reduced defects, which led to its enhanced photovoltaic performance. Apart from that, C 60 also participates in transportation and collection of photo-generated electrons. The optimum incorporation of C 60 resulted in an impressive improvement in the power conversion efficiency (PCE) of champion PSC from 9.2 to 12.8%. Moreover, the C 60 -doped PSCs exhibited improved air stability compared to undoped devices. The enhanced PCE in C 60 -doped PSCs is a result of enhanced optical absorption and separation of photo-generated charge and their transportation in the active layer. Since the size of C 60 molecules is of the order of nm, they easily get filled into the perovskite voids and facilitate another percolation path ways for charge carriers to transport and suppress the recombination losses via passivating the recombination centres in perovskite layers. The compact perovskite layer with larger grains led to reduced inter-granular grain boundaries with reduced defects, which restricts the fast diffusion of moisture into active layer and resulted in improved stability in device performance.

Organometal halide perovskite solar cells are an exciting class of emerging photovoltaics, because they hold promise for the realization of cost effective devices that can be fabricated by solution processing at room temperature. Here we report that reasonably good efficiencies are achievable in regular architecture of compact planer TiO 2 based perovskite solar cells using MEH:PPV as hole transport material. Furthermore, perovskite film processing conditions have been optimized to get maximum power conversion efficiency of the devices. A maximum 7.18% power conversion efficiency with an open circuit voltage of 0.798 V, fill factor of 0.501 and short circuit current density of 18.0 mA cm −2 has been achieved under 100 mW cm −2 irradiance of AM1.5 illumination.

We successfully grew single crystals of Cs 2 AgFeCl 6 double perovskite measuring ~ 12 mm×01 mm using the acid precipitation method. The dielectric relaxation and charge conduction mechanism has been investigated using temperature-dependent impedance spectroscopy correlated with modulus spectroscopy. We observed the temperature-dependent transition relaxation mechanism from non-Debye-type to Debye-type and the negative temperature coefficient of resistance (NTCR)-type characteristics in Cs 2 AgFeCl 6 single crystals. Moreover, a significant change in dielectric properties, loss factor, electric modulus, and conductivity with temperature has been observed. This investigation provides essential insights into dielectric relaxation behaviour. It elucidates the carrier conduction mechanisms in Cs 2 AgFeCl 6 lead-free double perovskite single crystals that will help design a new optoelectronic device class.

We demonstrated a facile and well controlled way for surface nanostructuring of Zinc Phthalocyanine (ZnPc) thin films. Investigations have been carried out on the structural and optical properties of as deposited and acetone vapour treated ZnPc thin films. Furthermore, organic photovoltaic (OPV) device has been also fabricated employing plane/nanostructured-ZnPc films as electron donor and [6,6]-phenyl C61 butyric acid methyl ester as the electron acceptor layer in conventional bilayer device architectures. OPV device performance has been compared with devices with planer and nanostructured-ZnPc thin films. Three times improvement in power conversion efficiency (η %) has been observed in nanostructured-ZnPc treated for 20 s acetone treatment.

In this study, pristine MoS 2 and MoS 2 /reduced graphene oxide (rGO) nanocomposites were synthesized using hydrothermal process. Different concentrations of graphene oxide (GO) precursor were used during the synthesis process. The electrochemical performance of the prepared composites was investigated in 1 M solution of H 2 SO 4 on copper foil. The physico-chemical analysis affirms the systematic growth of MoS 2 nanoflowers on rGO nanosheets. Furthermore, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurement of MoS 2 and MoS 2 /rGO nanocomposites were carried out. The CV and EIS measurements indicate that the charge transfer and specific capacitance ( C sp ) initially deteriorated slightly with low concentration of GO during synthesis, but with further increase in GO concentration, both parameters showed significant improvement compared to pristine MoS 2 . The MP demonstrated C sp of 193.50 Fg −1 at 5 mVs −1 , whereas MG100 nanocomposite demonstrates higher C sp of 587.2 Fg −1 at same scan rate.