Browsing by Author "Zian Reza, S.M."

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3R Economy of a PKL Electrochemical Cell
(Springer Science and Business Media Deutschland GmbH, 2022-01-04) Yesmin, F.; Islam, S.; Khan, K.A.; Zian Reza, S.M.; Hazrat Ali, M.
The term 3R means Reduction, Recycle and Reuse. It has been taken abandoned portable Zn/Cu-based electrodes for a PKL module which was used 8 years ago. The module was made by a glass plate and had six compartments. The plates from the compartment of this box can be replaced easily, and for this reason, it is called portable electrodes PKL module. The module possessed six chambers and each chamber contained four pairs of Zn and Cu-plates. In each chamber, all the Zn-plates were connected in parallel connection and similarly, all the Cu-plates were also connected in parallel connection. All chambers were connected in series connection. All the Zn-plates were new and all the Cu-plates were 8 years old. The electrolyte (PKL extract) was also 8 years old. The maximum open circuit voltage (Voc) was found to be 5.71 V, and the maximum short circuit current (Isc) was found to be 0.95 A. Most of the results have been tabulated and graphically discussed. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
A Study on Light Traps for Attracting and Killing the Insects Using PKL Electricity
(Springer Science and Business Media Deutschland GmbH, 2021) Khan, K.A.,; Sultana, R.,; Islam, S.,; Zian Reza, S.M.
Insects can see the radiation of Ultra Violet (UV) light. Nocturnal insects emit Ultra Violet light and the light source can attract them. To keep it in mind a PKL light source has been designed and developed to kill the insects in the paddy, vegetables, flowers, and fruits field. PKL light traps have been used to reduce the damage of the paddy, flowers, vegetables, and fruits from the nocturnal moths. Some lamps are used to control the type of pests those species are attracted to yellow color. To control the flying insects in the cultivated land a new and innovative PKL electric lighting system based on LED have been designed and developed.
Electrical Activities of Ginger Extract-Mediated Silver Nanoparticles in Bio-electrochemical Cell
(Springer Science and Business Media Deutschland GmbH, 2023) Khan, K.A.,; Paul, B.,; Siddique, M.A.K.,; Paul, M.,; Zian Reza, S.M.
The rising demand for electricity is becoming a tread throughout the world. In this study, a modified Zn/Cu electrodes-based bio-electrochemical cell (BEC) has been developed by using the ginger extract electrolyte and silver nanoparticles (Ag NPs). The effect of Ag NPs on the open circuit voltage (V), short circuit current (I), maximum power (P), power density (Pd), and internal resistance (R) of the BEC has been examined. Here, Ag NPs were formed via a rapid, non-toxic green synthesis process by using the ginger extract reducing agent. The functional groups in the ginger extract play an important role in reducing the Ag NPs from the Ag ions. The formation of Ag NPs was probed by X-ray diffraction spectroscopy (XRD) and UV–visible spectroscopy, and the active functional groups presented in the plant extract have been identified by using the Fourier transform infrared (FT-IR) analysis. The Ag NPs were incorporated in BEC to integrate the power and power density of cell. Such a modified Zn/Cu-based BEC can take the frontier forward for the integration of nanotechnology in low-cost electricity generation.
Green Synthesis of Magnetite (Fe3O4) Nanoparticles Using Azadirachta indica Leaf Extract and Their Characterization
(Springer Science and Business Media Deutschland GmbH, 2021) Pervin, R.,; Khan, K.A.,; Khan, N.I.,; Atique Ullah, A.K.M.,; Zian Reza, S.M.
Magnetite (Fe3O4) nanoparticles (NPs) were prepared through green synthesis route using Azadirachta indica leaf extract that acted as an efficient stabilizer and capping agent of the NPs. Two types of magnetite NPs were synthesized using 5 and 10 mL Azadirachta indica leaf extract of the same concentration. The X-ray diffraction (XRD) analysis showed that the particles were crystalline with cubic inverse spinel structure and the crystallite size was found to be about 5.73 nm and 6.34 nm, respectively. The surface morphology of the NPs was investigated by field emission scanning electron microscopy (FESEM) which showed that NPs were spherical in shape. The Fourier transform infrared spectroscopy (FT-IR) analysis showed that the capping agents of the NPs contained the functional groups alcohol, alkane, amine, alkyne, etc. The thermal stability of Fe3O4 NPs was investigated using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). DSC showed endothermic and exothermic peaks. The percentage of weight loss was about 55% and 40%, respectively, as found from TGA. The NPs were superparamagnetic in nature with zero coercivity and zero reminance magnetization which was observed using a vibrating sample magnetometer (VSM). On the treatment of aqueous solutions of ferrous and ferric salts in alkaline medium with Azadirachta indica leaf extract, the rapid formation of stable iron oxide nanoparticles (Fe3O4-NPs) is observed to occur. The average crystallite size was determined by Scherer formula which showed that the crystallite size of the NPs gets increased with the increasing amount of Azadirachta indica extract used. Which support and show a good agreement with XRD and VSM analysis.