12 results match your criteria: "Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous)[Affiliation]"

Nd-doped BO-SiO-AlF-NaF-CaF glass ceramics for 1.06 μm emission.

Spectrochim Acta A Mol Biomol Spectrosc

February 2025

Department of Physics, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal 518501, Andhra Pradesh, India. Electronic address:

Trivalent neodymium (Nd) doped transparent oxyfluoroborosilicate glass and glass ceramics (GCs) comprising CaF nanoparticles (NPs) were fabricated via melt quench route followed by two step heat treatment process. The X-ray diffraction and scanning electron microscopic studies confirm the presence of CaF NPs. The GC environment for efficient luminescence was obtained at a heat treatment of 450 °C/1 h.

View Article and Find Full Text PDF

Brownmillerite KBiFeO (KBFO) and KbiFeTiO (KBFTO) ceramics were synthesized using the prereacted nanopowders of KFeO (KFO) and BiFeO (BFO), and KFO and BiFeTiO (BFTO), respectively, via the reactive templated method. The powder X-ray diffraction patterns confirmed the monoclinic phase of the KBFO and KBFTO samples. The incorporation of Ti at Fe site prevented the formation of a secondary phase (BiFeO) in the KBFTO sample.

View Article and Find Full Text PDF

Background: The development of effective anti-cancer medicines with low side effects is imperative as cancer continues to be a leading cause of death globally. By obstructing the survival and growth of cancer cells, small-molecule medications have made tremendous progress in the field of cancer research. Several bioactive heterocyclic compounds, including derivatives of piperidine and 2,3-dihydrobenzofuran, have shown great promise and are found in various anti-cancer medications.

View Article and Find Full Text PDF

The influence of boundary layer flow of heat transfer analysis on hybrid nanofluid across an extended cylinder is the main focus of the current research. In addition, the impressions of magnetohydrodynamic, porous medium and thermal radiation are part of this investigation. Arrogate similarity variables are employed to transform the governing modelled partial differential equations into a couple of highly nonlinear ordinary differential equations.

View Article and Find Full Text PDF

Rational construction of MOF derived α-FeO/g-CN composite for effective photocatalytic degradation of organic pollutants and electrocatalytic oxygen evolution reaction.

Spectrochim Acta A Mol Biomol Spectrosc

April 2024

Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 602105, Tamil Nadu, India; Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, E.T.S. de Ingenieros, Universidad de Sevilla, Avda. Camino de los Descubrimientos s/n., 41092 Sevilla, Spain. Electronic address:

In recent years, researchers have been actively investigating metal oxide-based materials with narrow bandgaps due to their potential applications toward wastewater treatment and oxygen evolution reactions (OER). In this study, we successfully synthesized g-CN (GCN), FeO and FeO/g-CN (FGCN) using thermal polymerization and hydrothermal methods. We characterized the physicochemical and structural properties of these materials through various analytical techniques including XRD, FT-IR, UV-DRS, XPS, FE-SEM, and HR-TEM analyses, confirming the effective construction of the FGCN composite catalyst.

View Article and Find Full Text PDF

Background: Cancer is one of the most common reasons for mortality in the world. A continuous effort to develop effective anti-cancer drugs with minimum side effects has become necessary. The use of small-molecule drugs has revolutionized cancer research by inhibiting cancer cell survival and proliferation.

View Article and Find Full Text PDF

Compositional and structural elucidation of the materials is important to know their properties, chemical stability, and electro-photoactivity. The heterojunction electrocatalyst and photocatalyst activity could open a new window for solving the most urgent environmental and energy problems. Here, for the first time, we have designed and fabricated BiO/bismuth titanates modified with MOF-InS/CdInS materials by a stepwise process.

View Article and Find Full Text PDF

An efficient and elegant method was developed for the preparation of substituted phenyl vinyl ketones using low-cost and commercially available ethyl chloroformate and diisopropylethylamine as reagents. This methodology was also applied to the synthesis of natural products such as mimosifoliol and quinolines. Frontier molecular orbital (FMO) studies on mimosifoliol were carried out to understand its chemical reactivity.

View Article and Find Full Text PDF

Highly Efficient Solar-Light-Active Ag-Decorated g-CN Composite Photocatalysts for the Degradation of Methyl Orange Dye.

Micromachines (Basel)

July 2023

Departamento de Ingeniería y Ciencia de los Materiales y del Transporte, E.T.S. de Ingenieros, Universidad de Sevilla, Avda. Camino de los Descubrimientos s/n., 41092 Sevilla, Spain.

In this study, we utilized calcination and simple impregnation methods to successfully fabricate bare g-CN (GCN) and x% Ag/g-CN (x% AgGCN) composite photocatalysts with various weight percentages (x = 1, 3, 5, and 7 wt.%). The synthesized bare and composite photocatalysts were analyzed to illustrate their phase formation, functional group, morphology, and optical properties utilizing XRD, FT-IR, UV-Vis DRS, PL, FE-SEM, and the EDS.

View Article and Find Full Text PDF
Article Synopsis
  • Good water quality is crucial for life, leading to increased focus on degrading organic dye wastes from textiles to protect the environment.
  • This research focuses on creating a ceramic-based nanomaterial catalyst, specifically a reduced graphene oxide-ZnS (rGO-ZnS) composite, to break down dye solutions when exposed to sunlight.
  • The study shows that the rGO-ZnS nanomaterial effectively degrades naphthol blue black dye (NBB) by 93.7% under direct sunlight, while also examining the impact of radical scavengers and the antibacterial properties of the catalyst.
View Article and Find Full Text PDF

A series of praseodymium (Pr ) ion activated Sr Gd (PO ) :xPr (0 ≤ x ≤ 2.0 mol%) phosphors were prepared and their structural, compositional and luminescence properties were investigated. The X-ray diffraction profiles indicate that the studied phosphors crystallized into body centred cubic structure and the Pr ions have no influence on Sr Gd(PO ) phase.

View Article and Find Full Text PDF

An efficient and convenient Meglumine catalyzed procedure for the synthesis of bis(indolyl) methanes at ambient temperature under aqueous conditions in high yields. The catalytic reaction proceeds very smoothly. Clean reaction, ease of product isolation/purification, easily available reactants, metal free and environmentally friendly reaction conditions are the notable advantages of the present methodology.

View Article and Find Full Text PDF