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Saikh M. Wabaidur,Zeid A. AlOthman,Masoom R. Siddiqui,Kazi Mohsin,Leda G. Bousiakou,George A. Karikas 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-
Ultra performance liquid chromatography–mass spectrometry (UPLC–MS) method has been developed for the simultaneous determination of pharmaceuticals in industrial waste water samples. The binary mobile phase was used a mixture of acetonitrile and 0.1% aqueous solution of formic acid at a flow rate of 0.4 ml min1. Identification and quantitation of the analyzed drug samples were carried out using mass spectrometer equipped with electrospray ionization source operated in negative ionization mode. The linear range of the proposed method was found to be in the range of 18–270 ng ml1 for all drugs with limit of detection in the range of 1.25 to 1.89 ng ml1.
Suba Lakshmi Madaswamy,Saikh Mohammad Wabaidur,Mohammad Rizwan Khan,이수출,Ragupathy Dhanusuraman 한국고분자학회 2021 Macromolecular Research Vol.29 No.6
In this work, a metal free polyaniline nanorod (PANI-NR) with graphitic carbon nitride (GCN) nanocomposite has been synthesized by solar irradiation approach an acidic medium without the assistance of any surfactant and template. As synthesized PANI-NR/GCN nanocomposite was characterized by morphology studies, which found that the average diameter of the PANI-NR was 500 to 600 nm and the length of the nanorod range from 3 to 3.5 μm where GCN randomly dispersed on the surface of PANI-NR. The elemental composition, structural and vibrational spectra of PANI-NR/GCN are observed through EDX, Mapping, XRD, and FT-IR studies. Subsequently, the synthesized PANI-NR/GCN nanocomposite was used as an electrocatalyst, which was characterized through cyclic voltammetry, impedance, and chronoamperometric studies. The fabricated PANI-NR/GCN modified electrode shows significant electrocatalytic activity, lower charge resistance, high stability, and longevity towards methanol oxidation reaction (MOR) in an alkaline medium.
Seikh Mafiz Alam,Chi Wan Jeon,Mohammad Mainul Karim,이상학,Saikh Mohammad Wabaidur,Yeoun Suk Suh,정혜영 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.1
A rapid and sensitive chemiluminescence (CL) method using flow-injection (FI) has been developed for the determination of mandelic acid which is based on the enhancement of mandelic acid to the CL intensity of Ru(bipy) 3 2+-Ce(IV) system. The enhancement effect was dependent on the concentration of mandelic acid, based on which, CL system was established for the determination of mandelic acid. The concentrations of Ru(bipy)3 2+, Ce(IV), and H2SO4 were optimized. Under the optimum experimental conditions, the linear range and detection limit are 1.46-342.0 μg/mL and 0.072 μg/mL, respectively. The correlation coefficient (R) was 0.99732. The utility of this method was demonstrated by determining mandelic acid in capsules and human urine sample.
Alam, Seikh Mafiz,Jeon, Chi-Wan,Karim, Mohammad Mainul,Lee, Sang-Hak,Wabaidur, Saikh Mohammad,Suh, Yeoun-Suk,Chung, Hye-Young Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.1
A rapid and sensitive chemiluminescence (CL) method using flow-injection (FI) has been developed for the determination of mandelic acid which is based on the enhancement of mandelic acid to the CL intensity of ${Ru(bipy)_{3}}^{2+}$-Ce(IV) system. The enhancement effect was dependent on the concentration of mandelic acid, based on which, CL system was established for the determination of mandelic acid. The concentrations of ${Ru(bipy)_{3}}^{2+}$+, Ce(IV), and $H_2SO_4$ were optimized. Under the optimum experimental conditions, the linear range and detection limit are 1.46-342.0 ${\mu}g/ml$ and 0.072 ${\mu}g/ml$, respectively. The correlation coefficient (R) was 0.99732. The utility of this method was demonstrated by determining mandelic acid in capsules and human urine sample.
Iqbal Muhammad Zahir,Ullah Akhtar,Aziz Umer,Asif Muhammad,Wabaidur Saikh Mohammad,Ansari Mohd Zahid 한국물리학회 2023 Current Applied Physics Vol.52 No.-
Hybrid supercapacitors (SCs) have acquired astonishing features and being recognized as prospective energy storage devices for energy applications. Herein this work, we describe the hydrothermal synthesis of cobalt sulfide and the polymerization of aniline to prepare polyaniline (PANI). Initially, each electrode was tested in three electrode setup in which the CoS/PANI composite showed high electrochemical performance compared to pristine sample. Furthermore, CoS/PANI was studied along with activated carbon (AC) to explore the hybrid SCs application of the prepared composite. In two electrode arrangement, the hybrid device has achieved a remarkable Qs of 123.6 C g-1 at 0.2 A g-1, energy 29.2 Wh kg-1 as well as high specific power 1275 W kg-1. The hybrid SCs also displayed a maximum capacity retain value of 86.4% after 5000 GCD cycles. These results show that the CoS/PANI can be utilized as a best electrode material for the contemporary energy storage devices.