[en] Nanostructures contribute vital applications for surface-based science including latent fingerprints (LFPs) detection and reconstruction. Fingerprints are unique to an individual, matching the finger prints help to identify culprits. Vanadium Pentoxide (V₂O₅) nanorods were synthesized via hydrothermal method using pomegranate peel extract as fuel, towards their use in fingerprint development. PXRD patterns confirmed the formation of orthorhombic V₂O₅ crystal structure. Raman vibration modes at 144 cm⁻¹ and 994 cm⁻¹ signifies the characteristic orthorhombic V₂O₅ structural formation, FTIR spectra shows vibration bands of V₂O₅, UV–vis spectroscopy shows an intrinsic absorption band at ∼418 nm corresponding to electron transitions (O_2p → V_3d). The energy band gap (E_g) estimated from absorption spectrum was found to be ∼2.35 eV. Formation of nanorods was observed from SEM micrographs and particle size was found to be 30 nm from TEM images. Photoluminescence emission studies were performed and yellow –orange (brown) emission was observed from CIE diagram. The characteristic brown/Yellow-orange color of V₂O₅ nanorods supports tracing of LFPs on many kind of surfaces in visible light which eliminates the need for illuminating source. Hence, V₂O₅ nanorods find potential application in Forensic sciences. (paper)

[en] Bougainvillea flower extract was used as a fuel in solution combustion synthesis of pure and Nd³⁺ (1–9 mol %) doped vanadium pentoxides (V₂O₅) nanostructure. Powder x-ray Diffractogram, Scanning electron microscopy and Transmission electron microscopy images revealed the orthorhombic phase in Nd³⁺ doped V₂O₅ nanostructure. The additional peaks in Fourier Transform Infrared spectra and in Raman spectra were due to lattice distortion and mixed valence oxide in VO₄ led to structural and morphological changes. The synthesized Nd³⁺ doped V₂O₅ nanostructure exhibited good photocatalytic activity for the degradation of Methylene blue dye due to decrease in its work function as well as decrease in electron-hole recombination. (paper)