zulfa abaker - Academia.edu (original) (raw)

Papers by zulfa abaker

Artemisia absinthium (A. absinthium) leaf extract was successfully used to create zinc oxide nano... more Artemisia absinthium (A. absinthium) leaf extract was successfully used to create zinc oxide nanoparticles (ZnO NPs), and their properties were investigated via several techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared (FTIR), and UV–Vis spectroscopy. SEM analysis confirmed the spherical and elliptical shapes of the particles. Three different zinc peaks were observed via EDX at energies of 1, 8.7, and 9.8 keV, together with a single oxygen peak at 0.5 keV. XRD analysis identified ZnO NPs as having a hexagonal wurtzite structure with a particle size that decreased from 24.39 to 18.77 nm, and with an increasing surface area (BET) from 4.003 to 6.032 m2/g for the ZnO (without extract) and green ZnO NPs, respectively. FTIR analysis confirmed the groups of molecules that were accountable for stabilizing and minimizing the ZnO NPs, which was apparent at 3400 cm. Using UV–Vis spectroscopy, the band g...

International Journal of Environmental Science and Technology, 2021

RuO 2 –ZnO nanocomposite with high adsorption ability of Pb(II) was productively fabricated throu... more RuO 2 –ZnO nanocomposite with high adsorption ability of Pb(II) was productively fabricated through mediated pectinose solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDS), pore and surface area characteristics (BET), and Fourier transforms infrared (FTIR) results showed the formation of Ru-doped ZnO with new RuO 2 rutile phase. The removal kinetics process was fitted with the pseudo-second-order model. Nevertheless, the adsorption rate is possibly governed by the Pb(II) ions intra-particular diffusion. The average diameter of the nanocomposite was about 32 nm. The fabricated nanopowders have a rapid adsorption equilibrium time of 40 min and excellent competence for Pb(II) ion elimination (184.5 mg g −1 ).

Research Article 129  Abstract— Arabic acid was prepared from Acacia senegal gum by the removal ... more Research Article 129  Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion exchange chromatography. Arabate salts of (Na, K, Ca and Mg) were prepared using arabic acid by adding respective cations. Scanning electron microscope (SEM) proved successful production of arabic acid and arabate salts. pH values were 2.6, 6.9, 6.5, 4.9, 4.5 for arabic acid, Na, K, Ca and Mg arabate salts respectively. Intrinsic viscosities of arabic acid, Na, K, Ca and Mg arabate salts in 1M NaCl were determined. The measured viscosities were 8.53, 2.47, 0.11, 0.05 and 1.24 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively and 10.82, 14.33, 12.9, 10.12 and 9.38 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in 0.5M NaCl where they were 18.47, 45.82, 30.72, 11.76 and 10.83 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in deionized water. The equivalent conductivities of the arabic acid and arabate sa...

Nano-Structures & Nano-Objects

Environmental Nanotechnology, Monitoring and Management, 2021

In this study, a simple and eco-friendly method based on a used pectinose solution is described f... more In this study, a simple and eco-friendly method based on a used pectinose solution is described for the fabrication of a RuO2-ZnO photo-composite at different annealing temperatures. Characterization of the phase structure, morphology, and elemental composition confirms that the synthesized RuO2-ZnOcomposite has a hexagonal wurtzite-type structure of the ZnO phase with three extra peaks related to the formation of the RuO2 rutile phase, delineating at the (110), (101) and (211) crystal planes. The SEM and TEM result of RuO2-ZnO at Tc = 700 °C has clearly revealed the formation of nanorods shaped. The hysteresis loop RuO2-ZnO was type H3 and in the range of 0.05 – 1.0 relative pressure which is representative of a mesoporous nanomaterial. The photocatalytic performance of the prepared photo- composite is evaluated for indigo carmine dye degradation under visible light. The photodegradation of the dye follows first-order kinetics and the rate constant is estimated to be 36.38 × 10−3 m...

Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion... more Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion exchange chromatography. Arabate salts of (Na, K, Ca and Mg) were prepared using arabic acid by adding respective cations. Scanning electron microscope (SEM) proved successful production of arabic acid and arabate salts. pH values were 2.6, 6.9, 6.5, 4.9, 4.5 for arabic acid, Na, K, Ca and Mg arabate salts respectively. Intrinsic viscosities of arabic acid, Na, K, Ca and Mg arabate salts in 1M NaCl were determined. The measured viscosities were 8.53, 2.47, 0.11, 0.05 and 1.24 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively and 10.82, 14.33, 12.9, 10.12 and 9.38 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in 0.5M NaCl where they were 18.47, 45.82, 30.72, 11.76 and 10.83 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in deionized water. The equivalent conductivities of the arabic acid and arabate salts have been measured in ...

Artemisia absinthium (A. absinthium) leaf extract was successfully used to create zinc oxide nano... more Artemisia absinthium (A. absinthium) leaf extract was successfully used to create zinc oxide nanoparticles (ZnO NPs), and their properties were investigated via several techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), Fourier transform infrared (FTIR), and UV–Vis spectroscopy. SEM analysis confirmed the spherical and elliptical shapes of the particles. Three different zinc peaks were observed via EDX at energies of 1, 8.7, and 9.8 keV, together with a single oxygen peak at 0.5 keV. XRD analysis identified ZnO NPs as having a hexagonal wurtzite structure with a particle size that decreased from 24.39 to 18.77 nm, and with an increasing surface area (BET) from 4.003 to 6.032 m2/g for the ZnO (without extract) and green ZnO NPs, respectively. FTIR analysis confirmed the groups of molecules that were accountable for stabilizing and minimizing the ZnO NPs, which was apparent at 3400 cm. Using UV–Vis spectroscopy, the band g...

International Journal of Environmental Science and Technology, 2021

RuO 2 –ZnO nanocomposite with high adsorption ability of Pb(II) was productively fabricated throu... more RuO 2 –ZnO nanocomposite with high adsorption ability of Pb(II) was productively fabricated through mediated pectinose solution. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDS), pore and surface area characteristics (BET), and Fourier transforms infrared (FTIR) results showed the formation of Ru-doped ZnO with new RuO 2 rutile phase. The removal kinetics process was fitted with the pseudo-second-order model. Nevertheless, the adsorption rate is possibly governed by the Pb(II) ions intra-particular diffusion. The average diameter of the nanocomposite was about 32 nm. The fabricated nanopowders have a rapid adsorption equilibrium time of 40 min and excellent competence for Pb(II) ion elimination (184.5 mg g −1 ).

Research Article 129  Abstract— Arabic acid was prepared from Acacia senegal gum by the removal ... more Research Article 129  Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion exchange chromatography. Arabate salts of (Na, K, Ca and Mg) were prepared using arabic acid by adding respective cations. Scanning electron microscope (SEM) proved successful production of arabic acid and arabate salts. pH values were 2.6, 6.9, 6.5, 4.9, 4.5 for arabic acid, Na, K, Ca and Mg arabate salts respectively. Intrinsic viscosities of arabic acid, Na, K, Ca and Mg arabate salts in 1M NaCl were determined. The measured viscosities were 8.53, 2.47, 0.11, 0.05 and 1.24 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively and 10.82, 14.33, 12.9, 10.12 and 9.38 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in 0.5M NaCl where they were 18.47, 45.82, 30.72, 11.76 and 10.83 ml g -1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in deionized water. The equivalent conductivities of the arabic acid and arabate sa...

Nano-Structures & Nano-Objects

Environmental Nanotechnology, Monitoring and Management, 2021

In this study, a simple and eco-friendly method based on a used pectinose solution is described f... more In this study, a simple and eco-friendly method based on a used pectinose solution is described for the fabrication of a RuO2-ZnO photo-composite at different annealing temperatures. Characterization of the phase structure, morphology, and elemental composition confirms that the synthesized RuO2-ZnOcomposite has a hexagonal wurtzite-type structure of the ZnO phase with three extra peaks related to the formation of the RuO2 rutile phase, delineating at the (110), (101) and (211) crystal planes. The SEM and TEM result of RuO2-ZnO at Tc = 700 °C has clearly revealed the formation of nanorods shaped. The hysteresis loop RuO2-ZnO was type H3 and in the range of 0.05 – 1.0 relative pressure which is representative of a mesoporous nanomaterial. The photocatalytic performance of the prepared photo- composite is evaluated for indigo carmine dye degradation under visible light. The photodegradation of the dye follows first-order kinetics and the rate constant is estimated to be 36.38 × 10−3 m...

Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion... more Abstract— Arabic acid was prepared from Acacia senegal gum by the removal of metal ions using ion exchange chromatography. Arabate salts of (Na, K, Ca and Mg) were prepared using arabic acid by adding respective cations. Scanning electron microscope (SEM) proved successful production of arabic acid and arabate salts. pH values were 2.6, 6.9, 6.5, 4.9, 4.5 for arabic acid, Na, K, Ca and Mg arabate salts respectively. Intrinsic viscosities of arabic acid, Na, K, Ca and Mg arabate salts in 1M NaCl were determined. The measured viscosities were 8.53, 2.47, 0.11, 0.05 and 1.24 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively and 10.82, 14.33, 12.9, 10.12 and 9.38 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in 0.5M NaCl where they were 18.47, 45.82, 30.72, 11.76 and 10.83 ml g-1 for arabic acid, Na, K, Ca and Mg arabate salts respectively in deionized water. The equivalent conductivities of the arabic acid and arabate salts have been measured in ...