Publications

Advanced nano composite cation exchange material and chemical sensor

Advanced nano composites having light weight, highly thermally stable and easily processable are the demand of modern technology era. The problem keeping in mind, an advanced material, organic-inorganic nano-composite cation-exchanger, for preparation, physico-chemical characterization and their applications has been discussed as compilation work in the form of a book. We discussed some polymeric-inorganic cation exchanger having metal with phosphate group. The main objective of our proposed work was to synthesize advance class organic-inorganic hybrid materials and make it suitable to apply in electronics and analytical techniques.

CCDC 877202: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

Naphthalene based AIE active stimuli-responsive material as rewritable media for temporary communication

Physicochemical, photophysical investigation and micellization of 1-(2,5-dimethylfuran-3-yl)-3-(2,4,5-trimethoxyphenyl)prop-2-en-1-one (DFTP) dye by fluorophotometry

Commercial indium-tin oxide glass: A catalyst electrode for efficient N2 reduction at ambient conditions

Photocatalytic Degradation of Congo Red Using PbTiO ₃ Nanorods Synthesized via a Sonochemical Approach

Abstract Lead titania (PbTiO 3 ) possessing nanorods morphology was synthesized through facile and straightforward sonochemical approach using titanium tetraisopropoxide and lead nitrate as a starting material followed by annealing at 700 °C for 2 h and was utilized as an efficient photocatalyst to examine the degradation of Congo red dye (CR) under visible light. The as‐synthesized PbTiO 3 nanorods were characterized by physical‐chemical methods such as phase identification, morphology, Chemical composition, and elemental analysis. To study the effect of PbTiO 3 nanorods on dye degradation, various experimental parameters such as photocatalyst dosage, pH, and initial dye concentration was optimized. About 92% dye was degraded at pH 6 in the existence of PbTiO 3 nanorods under visible light. To know the mineralization of Congo red in the presence of sonochemically synthesized PbTiO 3 nanorods, the total organic carbon (TOC) removal studies carried out and it shows about 46% Congo red can be totally abated in 150 min under visible light.

Synthesis, characterization, and application of Au–Ag alloy nanoparticles for the sensing of an environmental toxin, pyrene

CCDC 845503: Experimental Crystal Structure Determination

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

BINARY FRUIT FLY OPTIMIZATION ALGORITHM FOR COUNTING THE NUMBER OF SPANNING TREES IN NETWORKS

The NP-hard problem of determining the number of spanning trees of graphs is examined in this paper. A spanning tree of a graph is a tree such that (i) it is a subgraph of (i.e., that includes only edges from ), and (ii) it includes every vertex of . The most classical interest concerning a spanning tree is the number of spanning trees or the complexity of the graph denoted by We propose the first attempt to use a binary version of the fruit fly optimization algorithm (BFFOA) to compute the minimal spanning tree of a graph in a heuristic manner. The fruit fly of BFFOA is binary encoded and used to represent which one of the vertices of the graph belongs to the spanning tree of . The feasibility is enforced by repairing the fruit fly such that an extra vertex created from vertices of is added to , and this repairing process is repeated until becomes the spanning tree of . Theoretically computed graph results are used to compare the proposed BFFOA against competing techniques. The proposed BFFOA performs better than the binary Grey Wolf Optimizer (BGWO), the binary Particle Swarm Optimizer (BPSO), the binary Whale Optimizer (BWO), and the binary Multi-verse Optimization (BMVO) algorithms, according to analysis and computational results.

Enhanced production of γ-valerolactone from levulinic acid hydrogenation-cyclization over ZrxCe1-xO2 based Cu catalysts

FT-IR and FT-Raman, NMR and UV spectroscopic investigation and hybrid computational (HF and DFT) analysis on the molecular structure of mesitylene

Ti₂O₃ Nanoparticles with Ti³⁺ Sites toward Efficient NH₃ Electrosynthesis under Ambient Conditions

Electrocatalytic nitrogen reduction reaction (NRR) enabled by introducing Ti³⁺ defect sites into TiO₂ through a doping strategy has recently attracted widespread attention. However, the amount of Ti³⁺ ions is limited due to the low concentration of dopants. Herein, we propose Ti₂O₃ nanoparticles as a pure Ti³⁺ system that performs efficiently toward NH₃ electrosynthesis under ambient conditions. This work has suggested that Ti³⁺ ions, as the main catalytically active sites, significantly increase the NRR activity. In an acidic electrolyte, Ti₂O₃ achieves extraordinary performance with a high NH₃ yield and a Faradaic efficiency of 26.01 μg h^-1 mg^-1 cat. and 9.16%, respectively, which are superior to most titanium-based NRR catalysts recently reported. Significantly, it also demonstrates a stable NH₃ yield in five consecutive cycles. Theoretical calculations uncovered that the enhanced electrocatalytic activity of Ti₂O₃ originated from Ti³⁺ active sites and significantly lowered the overpotential of the potential-determining step.

Isomeric Imidazole Functionalized Bithiophene-Based Hole Transporting Materials for Stable Perovskite Solar Cells and the Role of Donor Position

Semiconductor α‐Fe ₂ O ₃ Hematite Fabricated Electrode for Sensitive Detection of Phenolic Pollutants

Abstract Hematite (α‐Fe 2 O 3 ) semiconductor is an abundant and non‐toxic catalyst for different (photo)electrochemical reactions. In this work, a selective p‐nitrophenol sensor was developed by fabricating a thin‐layer of a glassy carbon electrode (GCE) with 5% nafion coating binders onto α‐Fe 2 O 3 thin film synthesized by a simple and inexpensive process. High sensitivity including linear dynamic range, long‐term stability, and enhanced electrochemical performance towards p‐nitrophenol were achieved by a reliable current‐voltage method. A linear calibration curve was observed over a wide range of p‐nitrophenol concentrations. Very low detection limit (0.6±0.02 nM), good limit of quantification (2.0 nM) and high sensor sensitivity ( K =74.1 μA⋅cm −2 ) are calculated based on noise to signal ratio of ∼3 N/S. Very importantly, the detection range covers over 7 orders of magnitude concentrations, from nM to mM. Figures of merits are comparable with best reported results whilst using a very simple device configuration. We show that hematite is an excellent material for the development of chemical sensors to detect hazardous compounds for environmental safety in a broad scale of concentrations.

4-(3-Phenyl-3,3a,4,5-tetrahydro-2<i>H</i>-benzo[<i>g</i>]indazol-2-yl)benzenesulfonamide ethanol monosolvate

In the title compound ethanol monosolvate, C(23)H(21)N(3)O(2)S·C(2)H(5)OH, the dihydro-pyrazole ring is twisted about the Csp(3)-Csp(3) bond. Nevertheless, the ring approximates a plane (r.m.s. deviation for the fitted atoms = 0.132 Å) and forms dihedral angles of 5.80 (13) and 12.29 (12)°, respectively, with the fused- and sulfonamide-benzene rings. As the dihydro-pyrazole C-bound phenyl group is roughly perpendicular to the dihydro-pyrazole ring [dihedral angle = 74.04 (15)°; the amino group is orientated to the same side of the mol-ecule], to a first approximation, the mol-ecule has a stunted T-shape. The cyclo-hexene ring adopts a half-chair conformation with the methyl-ene C atom connected to the dihydro-pyrazole ring lying 0.665 (4) Å out of the plane of the five remaining atoms (r.m.s. deviation = 0.050 Å). The components of the asymmetric unit are connected by an O-H⋯O hydrogen bond. Further links between mol-ecules leading to a three-dimensional architecture are of the type N-H⋯O.

Exploration of calcium doped zinc oxide nanoparticles as selective adsorbent for extraction of lead ion

2-Oxo-4-(thiophen-2-yl)-1,2,5,6-tetrahydrobenzo[<i>h</i>]quinoline-3-carbonitrile

In the mol-ecule of the title compound, C(18)H(12)N(2)OS, the tetra-hydro-benzo[h]quinoline fused-ring system is buckled owing to the ethyl-ene -CH(2)CH(2)- fragment, the benzene ring and the pyridine ring being twisted by 16.0 (1)°. The 4-substituted aromatic ring is bent away from the pyridine ring by 59.5 (2)° (for the major disordered thienyl component) in order to avoid crowding the cyanide substituent. In the crystal, two mol-ecules are linked by a pair of N-H⋯O hydrogen bonds to form a centrosymmetric dimer. The thienyl ring is disordered over two sites in a 72.7 (2):27.3 ratio.

Micellar and spectroscopic studies of amphiphilic drug with nonionic surfactant in the presence of ionic liquids