Browsing by Author "Hossain, M. Khalid"

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Investigation on radiation shielding potentials of barium calcium aluminosilicate glass material using silicon carbide nanotubes reinforcement
(2024-12-24) Saadu Itas, Yahaya; D. Albaqami, Munirah; Mohammad, Saikh; Khandaker, Mayeen Uddin; Mohammad, M.R.; Haldhar, Rajesh; Hossain, M. Khalid
This work investigated the gamma ray attenuation power of barium calcium aluminosilicate glass by using silicon carbide nanotube modifiers. Shielding efficiency of BaO–15CaO–5Al2O3–10B2O3–35SiO2 was investigated by adding different concentrations of silicon carbide nanotubes (10, 15, 20, 25 mol %). Amorphous and fine characteristics of the prepared glass materials were analyzed using XRD and FTIR techniques. In the results obtained, absence of sharp peaks in the XRD pattern revealed that the prepared glass was amorphous. Analysis of the radiation shielding properties was tested against gamma radiation by using PHY-X/PSD software. Various shielding parameters such as linear attenuation coefficient, mass attenuation coefficient, half value layer, tenth value layer, mean free path, and effective atomic number were determined to access the radiation shielding strength of the prepared samples. From the obtained results, composites of barium calcium aluminosilicate and silicon carbide nanotubes (sample 1) with higher values of mass attenuation coefficient (32.92 cm2/g) and effective atomic number (52.02) provided superior gamma ray attenuation. Results also revealed that the density and chemical composition of the prepared glass samples strongly influence photon interactions and weakly influence electronic interactions during the photon attenuation process. The results demonstrated that increasing the weight fractions of silicon carbide nanotubes in the glass samples increases the shielding properties.
Investigation on Radiation Shielding Potentials of Barium Calcium Aluminosilicate Glass Material Using Silicon Carbide Nanotubes Reinforcement
(Elsevier, 2024-12-15) Itas, Yahaya Saadu; Albaqami, Munirah D.; Mohammad, Saikh; Khandaker, Mayeen Uddin; Mohammad, M.R.; Haldhar, Rajesh; Hossain, M. Khalid
This work investigated the gamma ray attenuation power of barium calcium aluminosilicate glass by using silicon carbide nanotube modifiers. Shielding efficiency of BaO–15CaO–5Al2O3–10B2O3–35SiO2 was investigated by adding different concentrations of silicon carbide nanotubes (10, 15, 20, 25 mol %). Amorphous and fine characteristics of the prepared glass materials were analyzed using XRD and FTIR techniques. In the results obtained, absence of sharp peaks in the XRD pattern revealed that the prepared glass was amorphous. Analysis of the radiation shielding properties was tested against gamma radiation by using PHY-X/PSD software. Various shielding parameters such as linear attenuation coefficient, mass attenuation coefficient, half value layer, tenth value layer, mean free path, and effective atomic number were determined to access the radiation shielding strength of the prepared samples. From the obtained results, composites of barium calcium aluminosilicate and silicon carbide nanotubes (sample 1) with higher values of mass attenuation coefficient (32.92 cm2/g) and effective atomic number (52.02) provided superior gamma ray attenuation. Results also revealed that the density and chemical composition of the prepared glass samples strongly influence photon interactions and weakly influence electronic interactions during the photon attenuation process. The results demonstrated that increasing the weight fractions of silicon carbide nanotubes in the glass samples increases the shielding properties.
Sustainable antimicrobial functionalization of cotton with lavender oil and jackfruit latex
(Scopus, 2024-02) Toki, Gazi Farhan Ishraque; Alave, Rezaul Karim Khan; Duti, Syeda Fariha Jannat; Sharif, Nawaz; Mia, Md. Rony; Dutta, Sudipto; Repon, Reazuddin; Al-Qahtani, Md.Wahidah H.; Haldhar, Rajesh; Hossain, M. Khalid; Islam, Tanvir; Islam, Md.Tarikul
In recent years, functional antimicrobial fabric materials have been in high demand in the health sector due to the impact of COVID-19. Considering the increasing demand, the availability of natural, environmentally friendly, and non-toxic products is limited. In this study, a facile, eco-friendly method for the preparation of antimicrobial functional cotton fabric is proposed. At first, scoured and bleached cotton fabric is treated with chitosan, followed by encapsulation of lavender essential oil (LEO) with the addition of Artocarpus heterophyllus Lam. (jackfruit) latex gum as a binder. For the encapsulation and optimization of LEO and jackfruit latex gum (JLG) performance, four variations of these material’s quantity were utilized. Among all the studied samples, we found that the most efficient inhibition of bacterial growth was induced in both gram-negative (Escherichia coli) and gram-positive (Staphylococcus aureus) cultures. Among the samples, the chitosan-treated fabric with LEO and JLG added, named TG-5 (refers to LEO of 3 mL and JLG of 5 mL), showed the most impactful bacteria reduction. It demonstrates the most effective antibacterial reduction of 92.5% and 56.8% for E. coli and S. aureus bacterium cultures, respectively. The field emission scanning electron microscope illustrates and validates the morphology and addition of the prepared samples, while Fourier transform infrared is employed to identify the chemical bonding and chemical compounds of the functionalized materials. Therefore, the new combination of lavender oil and latex gum of jackfruit as an antimicrobial finishing agent can be the replacement of synthetic chemicals for cotton fabric functionalization in medical textiles.
Sustainable Antimicrobial Functionalization of Cotton with Lavender Oil and Jackfruit Latex
(Emerald Publishing Limited., 2024-09-19) Toki, Gazi Farhan Ishraque; Alave, Rezaul Karim Khan; Duti, Syeda Fariha Jannat; Sharif, Nawaz; Mia, Rony; Dutta, Sudipto; Repon, Reazuddin; Al-Qahtani, Wahidah H.; Haldhar, Rajesh; Hossain, M. Khalid; Islam, Tanvir; Islam, Tarikul
In recent years, functional antimicrobial fabric materials have been in high demand in the health sector due to the impact of COVID-19. Considering the increasing demand, the availability of natural, environmentally friendly, and non-toxic products is limited. In this study, a facile, eco-friendly method for the preparation of antimicrobial functional cotton fabric is proposed. At first, scoured and bleached cotton fabric is treated with chitosan, followed by encapsulation of lavender essential oil (LEO) with the addition of Artocarpus heterophyllus Lam. (jackfruit) latex gum as a binder. For the encapsulation and optimization of LEO and jackfruit latex gum (JLG) performance, four variations of these material’s quantity were utilized. Among all the studied samples, we found that the most efficient inhibition of bacterial growth was induced in both gram-negative (Escherichia coli) and gram-positive (Staphylococcus aureus) cultures. Among the samples, the chitosan-treated fabric with LEO and JLG added, named TG-5 (refers to LEO of 3 mL and JLG of 5 mL), showed the most impactful bacteria reduction. It demonstrates the most effective antibacterial reduction of 92.5% and 56.8% for E. coli and S. aureus bacterium cultures, respectively. The field emission scanning electron microscope illustrates and validates the morphology and addition of the prepared samples, while Fourier transform infrared is employed to identify the chemical bonding and chemical compounds of the functionalized materials. Therefore, the new combination of lavender oil and latex gum of jackfruit as an antimicrobial finishing agent can be the replacement of synthetic chemicals for cotton fabric functionalization in medical textiles.
Sustainable coloration and analysis of cellulosic viscose fabric incorporating Rosa rubiginosa extraction and pre-mordanting approaches
(Scopus, 2024-03) Toki, Gazi Farhan Ishraque; Sharif, Md. Nawaz; Hossen, Md. Anwar; Rahman, Abida; Mia, Rony; Repon, Md. Reazuddin; Sk, Md Salauddin; Almutairi, Tahani Mazyad; Hossain, M. Khalid
Dyeing with natural ingredients has gained popularity as a sustainable option because of its numerous useful applications and favorable environmental impacts. The purpose of this study was to determine the optimal conditions for extracting natural dyestuff from the red rose flower (Rosa rubiginosa) by observing the coloring of viscose fabric. The parameters examined were the M:L ratio (1:3), temperature (80 °C), and duration (30 min). Infrared dyeing procedures were conducted on viscose fabric, employing a diverse range of mordants, both natural and synthetic, which included materials such as orange and lemon peels, tannic acid, copper sulfate, and ferrous sulfate, at different mordanting ratios. The highest results of the mordants were achieved by a single mordanting process called pre-mordanting, and their performances were compared for the first time. Here, utilizing orange peel as a natural mordant in a pre-mordanting procedure for dyeing viscose fabrics yields better results and enhanced performance than using any of the other mordants used. The CIELab results were calculated using a variety of measurement conditions, and the ideal value was determined by an experiment on the color strength (K/S) properties. The FTIR spectra confirmed the interaction of colored particles with viscose fabrics, and the SEM investigation confirmed the dye's ability to be absorbed into the fabric's surface. Elemental mapping and EDX spectroscopy both showed that there were dye particles floating about the surface of the colored fabric. The colorfastness ratings, including a rating of 4 for rubbing, 4–5 for washing, and 4 for lightfastness, were found to be satisfactory when the fabric was treated with metal mordants. Hence, Rosa rubiginosa used as a coloration of viscose fabric is a very promising alternative option to synthetic dyestuff, which can be used to satisfy the actual need for coloring and functionality of viscose fabric in the dyeing and finishing industry.
Sustainable Coloration and Analysis of Cellulosic Viscose Fabric Incorporating Rosa Rubiginosa Extraction and Pre-mordanting Approaches
(Elsevier, 2024-03-20) Toki, Gazi Farhan Ishraque; Sharif, Md. Nawaz; Hossen, Md. Anwar; Rahman, Abida; Mia, Rony; Repon, Md. Reazuddin; S.K., Md Salauddin; Almutairi, Tahani Mazyad; Hossain, M. Khalid
Dyeing with natural ingredients has gained popularity as a sustainable option because of its numerous useful applications and favorable environmental impacts. The purpose of this study was to determine the optimal conditions for extracting natural dyestuff from the red rose flower (Rosa rubiginosa) by observing the coloring of viscose fabric. The parameters examined were the M:L ratio (1:3), temperature (80 °C), and duration (30 min). Infrared dyeing procedures were conducted on viscose fabric, employing a diverse range of mordants, both natural and synthetic, which included materials such as orange and lemon peels, tannic acid, copper sulfate, and ferrous sulfate, at different mordanting ratios. The highest results of the mordants were achieved by a single mordanting process called pre-mordanting, and their performances were compared for the first time. Here, utilizing orange peel as a natural mordant in a pre-mordanting procedure for dyeing viscose fabrics yields better results and enhanced performance than using any of the other mordants used. The CIELab results were calculated using a variety of measurement conditions, and the ideal value was determined by an experiment on the color strength (K/S) properties. The FTIR spectra confirmed the interaction of colored particles with viscose fabrics, and the SEM investigation confirmed the dye's ability to be absorbed into the fabric's surface. Elemental mapping and EDX spectroscopy both showed that there were dye particles floating about the surface of the colored fabric. The colorfastness ratings, including a rating of 4 for rubbing, 4–5 for washing, and 4 for lightfastness, were found to be satisfactory when the fabric was treated with metal mordants. Hence, Rosa rubiginosa used as a coloration of viscose fabric is a very promising alternative option to synthetic dyestuff, which can be used to satisfy the actual need for coloring and functionality of viscose fabric in the dyeing and finishing industry.
Tailoring the SnO2 Electron Transport Layer With Hydrofluoric Acid To Assemble Efficient and Stable Htl-Free Perovskite Solar Cells
(Springer Nature, 2023-06-15) Kumar, Anjan; Mohammed, Mustafa K. A.; Khandaker, Mayeen Uddin; Elsaeedy, H. I.; Kumar, T. Ch. Anil; Ramaiah, Gurumurthy B.; Hossain, M. Khalid
Perovskite solar cells (PSCs) without any hole transport layer (HTL) offer cost-effective photovoltaics for the world's energy demands. The current study focuses on improving the photovoltaic performance and stability of this kind of PSC by employing an interface modification of the tin(iv) oxide (SnO2) electron transport layer (ETL). For this mission, hydrofluoric acid (HF) with different concentrations was used as a modifier and spin-coated over the SnO2 ETL. Results showed that HF-based treatment increases charge transfer at the ETL/perovskite interface by reducing charge traps in the interface, leading to a champion efficiency of 14.65% for treated PSCs, higher than the 12.92% recorded for the control PSCs. In addition, HF modification improves the wettability of SnO2 for perovskite precursors and forms a smoother and more compact perovskite layer, which boosts stability behavior in treated PSCs.
The Efficacy of Rare-Earth Doped V2O5 Photocatalyst for Removal of Pollutants From Industrial Wastewater
(Elsevier, 2024-01-15) Kabira, M. H.; Hossaina, M. Z.; Jalila, M. A.; Ghoshc, S.; Hossaina, M.M.; Alia, M. A.; Khandakerd, M. U.; Janae, D.; Rahman, Md. Motinur; Hossain, M. Khalid; Chowdhury, J.; Uddina, M.M.
Photocatalysis is regarded as one of the most environmentally benign methods of mitigating the effects of textile wastewater. Despite the fact that various semiconducting metal oxides are used in photocatalysis, their performance is still insufficient. In this study, the hydrothermal method was used to synthesize rare-earth (RE) elements [Holmium (Ho) and Ytterbium (Yb)] doped vanadium pentoxide (V2O5) to improve its photocatalytic efficiency. The effect of RE ions on the photocatalytic efficiency of doped V2O5 has also been analyzed from both the experimental and first-principle density functional theory (DFT) methods. The stable orthorhombic crystal structure of doped V2O5 is confirmed by the X-ray diffraction with no secondary phase, and high-stressed conditions are generated for the 3 mol.%. The crystallite size, strain, and dislocation density are calculated to perceive the doping effect on the bare V2O5. The optical characteristics have been measured using UV–vis spectroscopy. The absorptions are found to be increased with increasing doping concentrations; however, the bandgap remains in the visible range. The photocatalytic properties are examined for the bare compound with varying pH, with the highest efficiency exhibited for pH 7. Moreover, it is observed that the RE ions significantly impact the catalytic behavior of V2O5. The degradation efficiency is improved by 93 % and 95 % for the 3 mol.% of Ho and Yb-doped V2O5 samples within 2 h, respectively, and the mechanism behind these extraordinary efficiencies has been explained thoroughly.