Md. Abu Bin Hasan Susan (original) (raw)
Papers by Md. Abu Bin Hasan Susan
Solid State Ionics, 2004
ABSTRACT
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 2014
ABSTRACT Kinetics of alkaline hydrolysis of crystal violet (CV) in micellar solutions of a cation... more ABSTRACT Kinetics of alkaline hydrolysis of crystal violet (CV) in micellar solutions of a cationic surfactant, cetyltrimethylammonium bromide (CTAB) both in absence and presence of urea was investigated. The reaction was catalyzed by micelles of CTAB and addition of urea caused a gradual decrease in the rate of the reaction. Kinetic results could be correlated with change in micellization behavior of CTAB by water structure breaking effect of urea. The kinetic profiles have been fitted with the simulated profiles on the basis of pseudo-phase ion-exchange model and best fits with reasonable parameters could be obtained.
Materials Today: Proceedings, 2020
Abstract Poly(vinylidene fluoride) (PVDF) based polymers are known to exhibit outstanding piezo-,... more Abstract Poly(vinylidene fluoride) (PVDF) based polymers are known to exhibit outstanding piezo-, pyro-, ferro-, and dielectric properties owing to their structural β-phase. In this work, the prospect of enhancement of dielectric properties of PVDF and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-hfp) polymers has been explored by increasing their β-phase through incorporation of porous and non-porous silica nanoparticles. Polymer films, both in pure and nanocomposite forms, were prepared using a simple solution casting technique. FTIR-ATR spectroscopic analyses of the films revealed increased proportion of β-phase in the polymer nanocomposite films containing silica nanoparticles, compared to the pure polymer films. X-ray diffraction analysis also confirmed a higher β- to α-ratio in nanocomposite films than in pure films. The transformation is considered to occur due to interaction between surface of negatively charged silica nanoparticles and –CH2 group of the polymer which has a positive charge density. Electrochemical impedance spectroscopic measurements corresponded with the increased β- to α-ratio, as the nanocomposite films exhibited higher dielectric constant than the pure films. Mesoporous silica incorporated films even showed higher β- to α-ratio and dielectric constant than non-porous silica incorporated films which may be brought about by the presence of pores in the nanoparticles, which increases the surface area available for interaction with the polymers as well as provides a confined environment favouring the interaction. Thus, this work suggests the possible benefit of silica fillers in preparing nanocomposites of PVDF and its copolymer with enhanced dielectric properties, to be employed in the development of smart materials and in various other applications.
Journal of Scientific Research, 2017
In this work, pure and copper-doped hydroxyapatite (various wt% of Cu) were synthesized by wet ch... more In this work, pure and copper-doped hydroxyapatite (various wt% of Cu) were synthesized by wet chemical precipitation method using eggshells as source of calcium. The efficiency of the prepared materials for removal of arsenic(V) from aqueous system has been investigated. Pure and Cu(II)-doped HAP were calcined at different temperatures ranging from 100-600 °C. The synthesized HAPs were characterized by Fourier Transform Infrared (FT-IR) spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscpic Analysis (EDS), particle size analysis based on dynamic light scattering measurements, and BrunauerEmmettTeller (BET) surface area analysis. FT-IR spectra and XRD patterns of synthesized HAPs confirmed the formation of single HAP phase. XRD patterns showed decrease in crystallite size for Cu-HAP compared to pristine HAP. BET surface area of Cu-HAP calcined at 300 °C increased to 153.39 m2g-1 from 66.80 m2g-1 for pure HAP. Finally, the sy...
Journal of Scientific Research
Water in oil (W/O) microemulsions are simple preparative route for nanoparticles where water drop... more Water in oil (W/O) microemulsions are simple preparative route for nanoparticles where water droplets dispersed in oil stabilized by surfactant or surfactant and cosurfactant monolayer act as nanoreactors to carry out chemical reactions. In this work, silver nanoparticles (AgNPs) were prepared in W/O microemulsions of cetyltrimethylammonium bromide (CTAB) and triton X-100 (TX-100) by using AgNO3 and NaBH4 as a precursor salt and reducing agent, respectively. To prepare microemulsions, CTAB or TX-100, 1-pentanol, cyclohexane and water were mixed with different molar ratio. AgNPs were prepared with different [AgNO3] in microemulsions of CTAB with fixed water to surfactant ratio (Wo). Average particle sizes were determined from dynamic light scattering (DLS) measurements. AgNPs prepared from microemulsions of CTAB were unstable while from TX-100, NPs were stable. Aggregation kinetics was investigated by measuring the absorbance at definite time intervals at the absorption maximum, ?max...
Journal of Scientific Research
Thin layer chromatography (TLC), a tool for defining identity, purity, and quantitation of a comp... more Thin layer chromatography (TLC), a tool for defining identity, purity, and quantitation of a compound, has also been proved useful for monitoring the progress of a chemical reaction. However, the technique is yet to be exploited for investigating the kinetics of a reaction systematically. In this work, we used TLC for measuring the time for consumption of a reactant in Michael addition reaction of acetylacetone with 2-cyclohexene-1-one. Average rate of the model reaction was determined using a definite initial concentration of acetylacetone for a series of catalyst systems like NaOH, 1,8-diazabicyclo[5.4.0]undec-7ene (DBU), DBU based protic ionic liquids (PILs) 1,8-diazabicyclo[5.4.0]undec-7-ene-8ium hydroxide ([HDBU]OH) and 1,8-diazabicyclo[5.4.0]undec-7-ene-8-ium acetate ([HDBU]CH3COO), a DBU based aprotic ionic liquid (AIL), 8-hexyl-1,8-diazabicyclo [5.4.0]undec-7-ene-8-ium hydroxide ([C6DBU]OH), and binary systems of the ionic liquids with molecular solvents, such as, water, DBU, and acetic acid. The kinetic data on the performance of the chosen catalysts were interpreted on the basis of the established mechanism of the reaction. Finally, the prospect of the method based on TLC as a suitable technique for kinetic study of chemical reactions has been discussed.
RSC Advances
Achieving the milestone of theoretical capacitance of α-MnO2 dispersed over 3D multi-walled carbo... more Achieving the milestone of theoretical capacitance of α-MnO2 dispersed over 3D multi-walled carbon nanotubes anchored to a graphene oxide nanosheet framework.
New Journal of Chemistry
Metal–organic framework-based palladium nanoparticles are found to be highly efficient multifunct... more Metal–organic framework-based palladium nanoparticles are found to be highly efficient multifunctional catalysts for the base-free aerobic oxidation of different aliphatic, aromatic and hetero-aromatic alcohols.
Journal of Dispersion Science and Technology
New Journal of Chemistry
Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicy... more Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicyclo[5.4.0]-undec-7-ene (DBU) based protic ionic liquids and their binary systems with DBU, water and acetic acid as catalysts.
Biodegradable polymeric films have great potential as alternatives to synthetic polymeric films t... more Biodegradable polymeric films have great potential as alternatives to synthetic polymeric films to reduce environmental pollution. Plasticizing agents and nanofillers can improve the mechanical properties of polymer-based composites, resulting in materials with better flexibility and extensibility. Starch, a natural polymer, can be produced at low cost and on a large scale from abundant and inexpensive agricultural resources like potatoes. The aim of the present work was to fabricate mechanically strong and thermally stable potato starch films reinforced with different types of plasticizers and nanoclays at different concentrations. Different types of plasticizers such as water, glycerin, ethylene glycol, sorbitol, and formamide and three types of clays such as montmorillonite, hectorite, and kaolinite at various concentrations were used to prepare potato starch-based nanocomposite films. The films were prepared using a very simple solution casting process. The mechanical properties and thermal stabilities of nanocomposite films significantly improved using montmorillonite, hectorite, and kaolinite clays. The water uptake percentage of the fabricated films decreased with addition of plasticizers and further decreased with addition of different types of clays. The structural and morphological changes of the fabricated films in the presence of plasticizers and nanoclays were correlated in detail with their mechanical properties, crystallinity, biodegradability, thermal stability, and water absorption capacities.
Macromolecular Chemistry and Physics
Materials Today: Proceedings
Materials Today: Proceedings
Materials Today: Proceedings
Processes
Oil pollutants, due to their toxicity, mutagenicity, and carcinogenicity, are considered a seriou... more Oil pollutants, due to their toxicity, mutagenicity, and carcinogenicity, are considered a serious threat to human health and the environment. Petroleum hydrocarbons compounds, for instance, benzene, toluene, ethylbenzene, xylene, are among the natural compounds of crude oil and petrol and are often found in surface and underground water as a result of industrial activities, especially the handling of petrochemicals, reservoir leakage or inappropriate waste disposal processes. Methods based on the conventional wastewater treatment processes are not able to effectively eliminate oil compounds, and the high concentrations of these pollutants, as well as active sludge, may affect the activities and normal efficiency of the refinery. The methods of removal should not involve the production of harmful secondary pollutants in addition to wastewater at the level allowed for discharge into the environment. The output of sewage filtration by coagulation and dissolved air flotation (DAF) floc...
International Journal of Environmental Analytical Chemistry
Nanomaterials
New magnetic iron oxide (Fe3O4)/activated charcoal (AC)/β-cyclodextrin (CD)/sodium alginate (Alg)... more New magnetic iron oxide (Fe3O4)/activated charcoal (AC)/β-cyclodextrin (CD)/sodium alginate (Alg) polymer nanocomposite materials were prepared by direct mixing of the polymer matrix with the nanofillers. The obtained materials were utilized as nano-adsorbents for the elimination of methylene blue (MB), a hazardous water-soluble cationic dye, from aqueous solutions, and showed excellent regeneration capacity. The formation of the nanocomposites was followed by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectrometry (EDX), Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), X-ray diffraction (XRD) and adsorption of N2 at −196 °C. The rate of adsorption was investigated varying several factors, namely contact time, pH, amount of adsorbent and MB concentration on the adsorption process. Studies dealing with equilibrium and kinetics were carried out in batch condition...
Journal of Molecular Structure
Solid State Ionics, 2004
ABSTRACT
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 2014
ABSTRACT Kinetics of alkaline hydrolysis of crystal violet (CV) in micellar solutions of a cation... more ABSTRACT Kinetics of alkaline hydrolysis of crystal violet (CV) in micellar solutions of a cationic surfactant, cetyltrimethylammonium bromide (CTAB) both in absence and presence of urea was investigated. The reaction was catalyzed by micelles of CTAB and addition of urea caused a gradual decrease in the rate of the reaction. Kinetic results could be correlated with change in micellization behavior of CTAB by water structure breaking effect of urea. The kinetic profiles have been fitted with the simulated profiles on the basis of pseudo-phase ion-exchange model and best fits with reasonable parameters could be obtained.
Materials Today: Proceedings, 2020
Abstract Poly(vinylidene fluoride) (PVDF) based polymers are known to exhibit outstanding piezo-,... more Abstract Poly(vinylidene fluoride) (PVDF) based polymers are known to exhibit outstanding piezo-, pyro-, ferro-, and dielectric properties owing to their structural β-phase. In this work, the prospect of enhancement of dielectric properties of PVDF and poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-hfp) polymers has been explored by increasing their β-phase through incorporation of porous and non-porous silica nanoparticles. Polymer films, both in pure and nanocomposite forms, were prepared using a simple solution casting technique. FTIR-ATR spectroscopic analyses of the films revealed increased proportion of β-phase in the polymer nanocomposite films containing silica nanoparticles, compared to the pure polymer films. X-ray diffraction analysis also confirmed a higher β- to α-ratio in nanocomposite films than in pure films. The transformation is considered to occur due to interaction between surface of negatively charged silica nanoparticles and –CH2 group of the polymer which has a positive charge density. Electrochemical impedance spectroscopic measurements corresponded with the increased β- to α-ratio, as the nanocomposite films exhibited higher dielectric constant than the pure films. Mesoporous silica incorporated films even showed higher β- to α-ratio and dielectric constant than non-porous silica incorporated films which may be brought about by the presence of pores in the nanoparticles, which increases the surface area available for interaction with the polymers as well as provides a confined environment favouring the interaction. Thus, this work suggests the possible benefit of silica fillers in preparing nanocomposites of PVDF and its copolymer with enhanced dielectric properties, to be employed in the development of smart materials and in various other applications.
Journal of Scientific Research, 2017
In this work, pure and copper-doped hydroxyapatite (various wt% of Cu) were synthesized by wet ch... more In this work, pure and copper-doped hydroxyapatite (various wt% of Cu) were synthesized by wet chemical precipitation method using eggshells as source of calcium. The efficiency of the prepared materials for removal of arsenic(V) from aqueous system has been investigated. Pure and Cu(II)-doped HAP were calcined at different temperatures ranging from 100-600 °C. The synthesized HAPs were characterized by Fourier Transform Infrared (FT-IR) spectroscopy, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscpic Analysis (EDS), particle size analysis based on dynamic light scattering measurements, and BrunauerEmmettTeller (BET) surface area analysis. FT-IR spectra and XRD patterns of synthesized HAPs confirmed the formation of single HAP phase. XRD patterns showed decrease in crystallite size for Cu-HAP compared to pristine HAP. BET surface area of Cu-HAP calcined at 300 °C increased to 153.39 m2g-1 from 66.80 m2g-1 for pure HAP. Finally, the sy...
Journal of Scientific Research
Water in oil (W/O) microemulsions are simple preparative route for nanoparticles where water drop... more Water in oil (W/O) microemulsions are simple preparative route for nanoparticles where water droplets dispersed in oil stabilized by surfactant or surfactant and cosurfactant monolayer act as nanoreactors to carry out chemical reactions. In this work, silver nanoparticles (AgNPs) were prepared in W/O microemulsions of cetyltrimethylammonium bromide (CTAB) and triton X-100 (TX-100) by using AgNO3 and NaBH4 as a precursor salt and reducing agent, respectively. To prepare microemulsions, CTAB or TX-100, 1-pentanol, cyclohexane and water were mixed with different molar ratio. AgNPs were prepared with different [AgNO3] in microemulsions of CTAB with fixed water to surfactant ratio (Wo). Average particle sizes were determined from dynamic light scattering (DLS) measurements. AgNPs prepared from microemulsions of CTAB were unstable while from TX-100, NPs were stable. Aggregation kinetics was investigated by measuring the absorbance at definite time intervals at the absorption maximum, ?max...
Journal of Scientific Research
Thin layer chromatography (TLC), a tool for defining identity, purity, and quantitation of a comp... more Thin layer chromatography (TLC), a tool for defining identity, purity, and quantitation of a compound, has also been proved useful for monitoring the progress of a chemical reaction. However, the technique is yet to be exploited for investigating the kinetics of a reaction systematically. In this work, we used TLC for measuring the time for consumption of a reactant in Michael addition reaction of acetylacetone with 2-cyclohexene-1-one. Average rate of the model reaction was determined using a definite initial concentration of acetylacetone for a series of catalyst systems like NaOH, 1,8-diazabicyclo[5.4.0]undec-7ene (DBU), DBU based protic ionic liquids (PILs) 1,8-diazabicyclo[5.4.0]undec-7-ene-8ium hydroxide ([HDBU]OH) and 1,8-diazabicyclo[5.4.0]undec-7-ene-8-ium acetate ([HDBU]CH3COO), a DBU based aprotic ionic liquid (AIL), 8-hexyl-1,8-diazabicyclo [5.4.0]undec-7-ene-8-ium hydroxide ([C6DBU]OH), and binary systems of the ionic liquids with molecular solvents, such as, water, DBU, and acetic acid. The kinetic data on the performance of the chosen catalysts were interpreted on the basis of the established mechanism of the reaction. Finally, the prospect of the method based on TLC as a suitable technique for kinetic study of chemical reactions has been discussed.
RSC Advances
Achieving the milestone of theoretical capacitance of α-MnO2 dispersed over 3D multi-walled carbo... more Achieving the milestone of theoretical capacitance of α-MnO2 dispersed over 3D multi-walled carbon nanotubes anchored to a graphene oxide nanosheet framework.
New Journal of Chemistry
Metal–organic framework-based palladium nanoparticles are found to be highly efficient multifunct... more Metal–organic framework-based palladium nanoparticles are found to be highly efficient multifunctional catalysts for the base-free aerobic oxidation of different aliphatic, aromatic and hetero-aromatic alcohols.
Journal of Dispersion Science and Technology
New Journal of Chemistry
Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicy... more Michael addition reaction of acetylacetone and cyclohexenone has been studied using 1,8-diazabicyclo[5.4.0]-undec-7-ene (DBU) based protic ionic liquids and their binary systems with DBU, water and acetic acid as catalysts.
Biodegradable polymeric films have great potential as alternatives to synthetic polymeric films t... more Biodegradable polymeric films have great potential as alternatives to synthetic polymeric films to reduce environmental pollution. Plasticizing agents and nanofillers can improve the mechanical properties of polymer-based composites, resulting in materials with better flexibility and extensibility. Starch, a natural polymer, can be produced at low cost and on a large scale from abundant and inexpensive agricultural resources like potatoes. The aim of the present work was to fabricate mechanically strong and thermally stable potato starch films reinforced with different types of plasticizers and nanoclays at different concentrations. Different types of plasticizers such as water, glycerin, ethylene glycol, sorbitol, and formamide and three types of clays such as montmorillonite, hectorite, and kaolinite at various concentrations were used to prepare potato starch-based nanocomposite films. The films were prepared using a very simple solution casting process. The mechanical properties and thermal stabilities of nanocomposite films significantly improved using montmorillonite, hectorite, and kaolinite clays. The water uptake percentage of the fabricated films decreased with addition of plasticizers and further decreased with addition of different types of clays. The structural and morphological changes of the fabricated films in the presence of plasticizers and nanoclays were correlated in detail with their mechanical properties, crystallinity, biodegradability, thermal stability, and water absorption capacities.
Macromolecular Chemistry and Physics
Materials Today: Proceedings
Materials Today: Proceedings
Materials Today: Proceedings
Processes
Oil pollutants, due to their toxicity, mutagenicity, and carcinogenicity, are considered a seriou... more Oil pollutants, due to their toxicity, mutagenicity, and carcinogenicity, are considered a serious threat to human health and the environment. Petroleum hydrocarbons compounds, for instance, benzene, toluene, ethylbenzene, xylene, are among the natural compounds of crude oil and petrol and are often found in surface and underground water as a result of industrial activities, especially the handling of petrochemicals, reservoir leakage or inappropriate waste disposal processes. Methods based on the conventional wastewater treatment processes are not able to effectively eliminate oil compounds, and the high concentrations of these pollutants, as well as active sludge, may affect the activities and normal efficiency of the refinery. The methods of removal should not involve the production of harmful secondary pollutants in addition to wastewater at the level allowed for discharge into the environment. The output of sewage filtration by coagulation and dissolved air flotation (DAF) floc...
International Journal of Environmental Analytical Chemistry
Nanomaterials
New magnetic iron oxide (Fe3O4)/activated charcoal (AC)/β-cyclodextrin (CD)/sodium alginate (Alg)... more New magnetic iron oxide (Fe3O4)/activated charcoal (AC)/β-cyclodextrin (CD)/sodium alginate (Alg) polymer nanocomposite materials were prepared by direct mixing of the polymer matrix with the nanofillers. The obtained materials were utilized as nano-adsorbents for the elimination of methylene blue (MB), a hazardous water-soluble cationic dye, from aqueous solutions, and showed excellent regeneration capacity. The formation of the nanocomposites was followed by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectrometry (EDX), Fourier-transform infrared spectroscopy (FTIR), vibrating sample magnetometer (VSM), X-ray diffraction (XRD) and adsorption of N2 at −196 °C. The rate of adsorption was investigated varying several factors, namely contact time, pH, amount of adsorbent and MB concentration on the adsorption process. Studies dealing with equilibrium and kinetics were carried out in batch condition...
Journal of Molecular Structure