University of Burdwan

About: University of Burdwan is a education organization based out in Barddhamān, West Bengal, India. It is known for research contribution in the topics: Population & Nanocrystalline material. The organization has 2492 authors who have published 5389 publications receiving 74865 citations. The organization is also known as: BU & Burdwan University.

Pd Nanoparticles Decorated on Hypercrosslinked Microporous Polymer: A Highly Efficient Catalyst for the Formylation of Amines through Carbon Dioxide Fixation

Abstract: CO2 fixation reaction is one of the most challenging chemical transformations not only in the context of environmental remediation but also for effective utilization of abundant carbon sources in nature. Here, we have stabilized palladium nanoparticles (NPs) at the surfaces of a hypercrosslinked porous polymer bearing carbazole and α,α′-dibromo-p-xylene monomeric units to obtain a Pd@HMP-1 nanocatalyst. The material has been thoroughly characterized by powder XRD, high-resolution (HR)-TEM, field-emission (FE)-SEM, Brunauer–Emmett–Teller (BET), thermogravimetric (TGA), and FTIR analysis. Pd@HMP-1 showed excellent catalytic activity towards formylation of amines by carbon dioxide fixation under mild reaction conditions. The high surface area and nitrogen-rich porous surface make the polymer a suitable support for the palladium nanoparticles and endow it with high recycling efficiency in this CO2 fixation reaction.

Chemically reactive solute distribution in mhd boundary layer flow over a permeable stretching sheet with suction or blowing

Abstract: The main objective of this work is to analyze the distribution of reactant solute undergoing first-order chemical reaction in the boundary layer flow of an electrically conducting incompressible fluid over a permeable stretching sheet subjected to suction or blowing. The flow is permeated by an externally applied magnetic field normal to the plane of flow. The governing partial differential equations along with appropriate boundary conditions for flow field and reactive solute are transformed into a set of nonlinear ordinary differential equations using similarity variables. The self-similar equations thus obtained are solved numerically by the finite difference method using quasi-linearization technique. The velocity and concentration profiles are drawn for various values of the parameters, and the characteristic features are analyzed. The analysis reveals that the rate of solute transfer is enhanced with increasing values of suction as well as magnetic parameter and its rate is diminished with the incre...

Removal of fluoride by aluminum impregnated coconut fiber from synthetic fluoride solution and natural water

Abstract: Aluminum impregnated coconut fiber ash (AICFA) was used for removal of fluoride from synthetic fluoride solution. The AICFA showed high specific area and strong affinity toward fluoride. Synthesized AICFA was characterized by pHZPC, FTIR, SEM and XRD studies. Adsorption kinetics indicated that the adsorption equilibrium was reached within 60 min and the adsorption process followed the pseudo-second-order kinetic model better. The Langmuir isotherm model could fit the experimental data well. Thermodynamic parameters such as Gibbs free energy (ΔG∘), enthalpy (ΔH∘) and entropy (ΔS∘) change of sorption were also evaluated which indicated that the adsorption process was spontaneous, feasible and exothermic in nature. Furthermore, the coexisting anions had significant effect on fluoride adsorption. Moreover, desorption study with AICFA showed that nearly 98% of fluoride could be leached out at pH 12. Further, the reusable properties of the material supported the possibility of its use commercially.