Cyril Ehi-Eromosele | Covenant University Canaanland, Ota. (original) (raw)
Papers by Cyril Ehi-Eromosele
Journal of Alloys and Compounds
Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences
Nicotinic acid hydrazide and 2,4-dihydoxylbenzaldehyde were condensed at 20 °C to form an acylhyd... more Nicotinic acid hydrazide and 2,4-dihydoxylbenzaldehyde were condensed at 20 °C to form an acylhydrazone (H3L1) with ONO coordination pattern. The structure of the acylhydrazone was elucidated by using CHN analyzer, ESI mass spectrometry, IR, 1H NMR, 13C NMR and 2D NMR such as COSY and HSQC. Thereafter, five novel metal complexes [Mn(II), Fe(II), Pt(II) Zn(II) and Pd(II)] of the hydrazone ligand were synthesized and their structural characterization were achieved by several physicochemical methods namely: elemental analysis, electronic spectra, infrared, EPR, molar conductivity and powder X-ray diffraction studies. An octahedral geometry was suggested for both Pd(II) and Zn(II) complexes while both Mn(II) and Fe(II) complexes conformed with tetrahedral pyramidal. However, Pt(II) complex agreed with tetrahedral geometry. In vitro antitubercular activity study of the ligand and the metal complexes were evaluated against Mycobacterium tuberculosis, H37Rv, by using micro-diluted method. ...
Materials Chemistry and Physics
ACS Applied Materials & Interfaces
Journal of Physics: Conference Series
Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP).... more Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP). The process was carried out at 45 0 C for 45 min using 64% concentrated sulphuric acid, Pb 2+ was removed from aqueous solution using the synthesized CNC adsorbent. Cassava peel cellulose nanocrystal (CPCNC) was characterised using FT-IR and X-Ray diffraction techniques. The different operational factors were examined to enhance the conditions for optimum adsorption of Pb 2+. The equilibrium adsorption figures fitted well into both the Freundlich and Langmuir isotherm models, indicating that adsorption was due to the formation of a monolayer adsorption unto a homogenous surface and showed a good relationship between the Pb 2+ and the CPCNC. The separation factor, RL, which is a dimensionless constant ranged between 0.02 and 0.248 and indicated that the adsorption was feasible and favourable. The optimum adsorption capacity was 6.4 mg Pb 2+ /g CNC at 25 o C and pH 6. This study revealed that this novel nanomaterial has an unlimited prospect for effective removal of lead ion from aqueous solution.
IOP Conference Series: Materials Science and Engineering
The morphological, magnetic, transport and corrosion inhibitory property of La0.5Ca0.5MnO3-AuNPs ... more The morphological, magnetic, transport and corrosion inhibitory property of La0.5Ca0.5MnO3-AuNPs prepared by sol gel method was determined. The structural property determined by XRD indicated that the unusual broadening of the Bragg's reflection despite the elevated sintering temperature was as a result of the inhibition of the grain growth by the gold nanoparticles (Au-NPs). The morphological property of the sample as determined by SEM and TEM show heterogeneously sized and shaped nanoparticles of an average particle size of 40 nm. The magnetic measurements of La0.5Ca0.5MnO3-AuNPs showed that the sample undergoes a paramagneticferromagnetic phase transition with TC = 250K and TB = 150K. Two metalinsulator transitions were observed at T1 and T2. The resistivity of the sample was observed to reduce as temperature increased to 300 K. The gravimetric method was used to determine the corrosion inhibitory properties with 1.0 M HCl using different concentration of La05Ca0.5MnO3-AuNPs. The anti-corrosion study was carried out for 21 days and was observed to reduce as concentration of La0.5Ca0.5MnO3-AuNPs increased, but corrosion rate increased as the exposure time increased. The inhibitory property of the sample increased as the concentration of the sample increased. The reaction best fitted the Langmuir isotherm, indicating a monolayer of La0.5Ca0.5MnO3-AuNPs inhibiting the corrosion of the mild steel.
IOP Conference Series: Materials Science and Engineering
A functionalized paramagnetic manganite La0.33Ca0.67MnO3 was investigated for its morphological, ... more A functionalized paramagnetic manganite La0.33Ca0.67MnO3 was investigated for its morphological, optical and antimicrobial properties. The manganite was capped by using a citrate ligand. The UV-visible spectrophotometer was used in monitoring the optical bands of the metal-citrate complex. It was observed to absorb in the visible region. The metal-citrate was reacted with a biologically active ligand (N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide). The optical bands observed from the metal-citrate were used in monitoring the reaction between the metal-citrate and N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide). The morphological property of the product formed was determined using SEM-EDAX. The effect of the complex formed on the organic ligand, N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) was determined using 1 H and 13 C NMR. The bacterial inhibitory property of the metal-citrate-N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) complex was determined against Pseudomonas aeruginosa and Staphylococcus auerus. It was observed to inhibit the growth of Staphylococcus aureus only. The biological activities of the metal-citrate N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) suggest its use as an alternative antibacterial therapy.
Journal of Biomimetics, Biomaterials and Biomedical Engineering
Coating of magnetic nanoparticles (MNPs) is usually a requirement prior to their utilization in b... more Coating of magnetic nanoparticles (MNPs) is usually a requirement prior to their utilization in biomedical applications. However, coating can influence the magneto-structural properties of MNPs thereby imparting their applications. The present work highlights the combustion synthesis of Na-doped lanthanum manganites (LNMO) and the influence of silica coatings on the magneto-structural properties, colloidal stability and antimicrobial properties of LNMO MNPs with their biomedical applications in mind. The crystalline perovskite structure was the same both for the bare and silica coated LNMO samples while there was a slight increase in crystallite size after coating. The FTIR spectral analysis, reduction in agglomeration of the particles and the elemental composition of the coated nanoparticles confirmed the presence of silica. The magnetization values of 34 emu/g and 29 emu/g recorded for bare and coated LNMO samples, respectively show that LNMO MNPs retained its ferromagnetic behavi...
Iranian Journal of Science and Technology, Transactions A: Science
Faraday discussions, 2018
Advances in Natural Sciences: Nanoscience and Nanotechnology, 2016
The effect of polyol on multiple ligand capped silver alloyed nanobimetallic particles in tri-noc... more The effect of polyol on multiple ligand capped silver alloyed nanobimetallic particles in tri-noctylphosphine oxide and oleic acid matrices View the table of contents for this issue, or go to the journal homepage for more 2016 Adv. Nat. Sci: Nanosci. Nanotechnol. 7 045012
Journal of Nano Research, 2016
The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investi... more The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investigated in drinking water and groundwater sources in Ota, Nigeria. Detected concentrations of Mn, Cu and Zn were below the World Health organization and Standard Organization of Nigeria maximum permissible limits. Fe (92%) and Ni (53%) in some drinking water and groundwater sources were found in concentrations that exceeded the maximum permissible limits for these metals. Notably, the levels of Pb were below detection limit in all the bottled, well and borehole water, with exception of the hospital borehole, while the swimming pool had high concentrations of Fe (0.88 mg/L), Pb (0.21 mg/L) and Ni (0.19mg/L) compared to SON (0.30 mg/L), WHO (0.01 mg/L) and WHO (0.07 mg/L) respectively. Pollution indices indicated significant pollution of Pb, Fe and Ni. Overall, the mean metal levels in the sampled water sources followed a descending order, Fe>Cu>Zn>Ni>Pb>Mn. Some of the drinking water and groundwater sources could be considered safe for drinking, but proactive measures should be taken to check the levels of Fe, Pb and Ni in the swimming pool.
Materials Technology, 2014
Weed and Pest Control - Conventional and New Challenges, 2013
The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investi... more The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investigated in drinking water and groundwater sources in Ota, Nigeria. Detected concentrations of Mn, Cu and Zn were below the World Health organization and Standard Organization of Nigeria maximum permissible limits. Fe (92%) and Ni (53%) in some drinking water and groundwater sources were found in concentrations that exceeded the maximum permissible limits for these metals. Notably, the levels of Pb were below detection limit in all the bottled, well and borehole water, with exception of the hospital borehole, while the swimming pool had high concentrations of Fe (0.88 mg/L), Pb (0.21 mg/L) and Ni (0.19mg/L) compared to SON (0.30 mg/L), WHO (0.01 mg/L) and WHO (0.07 mg/L) respectively. Pollution indices indicated significant pollution of Pb, Fe and Ni. Overall, the mean metal levels in the sampled water sources followed a descending order, Fe>Cu>Zn>Ni>Pb>Mn. Some of the drinki...
In this paper, we have solved the Schrodinger equation with a new superposed potential (IQYARP) m... more In this paper, we have solved the Schrodinger equation with a new superposed potential (IQYARP) made of inversely quadratic Yukawa potential and attractive radial potential using the parametric Nikiforov-Uvarov (NU) method. The solutions of the Schrodinger equation enabled us to obtainbound state energy eigenvalues and their corresponding un-normalized eigen functions in terms of Jacobi polynomials. Also, a special case of the potential has been considered and its energy eigen values obtained. Our calculation reveals bound state energy eigenvalues which can be applied to molecules moving under the influence of IQYARP potential.
Journal of Alloys and Compounds
Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences
Nicotinic acid hydrazide and 2,4-dihydoxylbenzaldehyde were condensed at 20 °C to form an acylhyd... more Nicotinic acid hydrazide and 2,4-dihydoxylbenzaldehyde were condensed at 20 °C to form an acylhydrazone (H3L1) with ONO coordination pattern. The structure of the acylhydrazone was elucidated by using CHN analyzer, ESI mass spectrometry, IR, 1H NMR, 13C NMR and 2D NMR such as COSY and HSQC. Thereafter, five novel metal complexes [Mn(II), Fe(II), Pt(II) Zn(II) and Pd(II)] of the hydrazone ligand were synthesized and their structural characterization were achieved by several physicochemical methods namely: elemental analysis, electronic spectra, infrared, EPR, molar conductivity and powder X-ray diffraction studies. An octahedral geometry was suggested for both Pd(II) and Zn(II) complexes while both Mn(II) and Fe(II) complexes conformed with tetrahedral pyramidal. However, Pt(II) complex agreed with tetrahedral geometry. In vitro antitubercular activity study of the ligand and the metal complexes were evaluated against Mycobacterium tuberculosis, H37Rv, by using micro-diluted method. ...
Materials Chemistry and Physics
ACS Applied Materials & Interfaces
Journal of Physics: Conference Series
Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP).... more Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP). The process was carried out at 45 0 C for 45 min using 64% concentrated sulphuric acid, Pb 2+ was removed from aqueous solution using the synthesized CNC adsorbent. Cassava peel cellulose nanocrystal (CPCNC) was characterised using FT-IR and X-Ray diffraction techniques. The different operational factors were examined to enhance the conditions for optimum adsorption of Pb 2+. The equilibrium adsorption figures fitted well into both the Freundlich and Langmuir isotherm models, indicating that adsorption was due to the formation of a monolayer adsorption unto a homogenous surface and showed a good relationship between the Pb 2+ and the CPCNC. The separation factor, RL, which is a dimensionless constant ranged between 0.02 and 0.248 and indicated that the adsorption was feasible and favourable. The optimum adsorption capacity was 6.4 mg Pb 2+ /g CNC at 25 o C and pH 6. This study revealed that this novel nanomaterial has an unlimited prospect for effective removal of lead ion from aqueous solution.
IOP Conference Series: Materials Science and Engineering
The morphological, magnetic, transport and corrosion inhibitory property of La0.5Ca0.5MnO3-AuNPs ... more The morphological, magnetic, transport and corrosion inhibitory property of La0.5Ca0.5MnO3-AuNPs prepared by sol gel method was determined. The structural property determined by XRD indicated that the unusual broadening of the Bragg's reflection despite the elevated sintering temperature was as a result of the inhibition of the grain growth by the gold nanoparticles (Au-NPs). The morphological property of the sample as determined by SEM and TEM show heterogeneously sized and shaped nanoparticles of an average particle size of 40 nm. The magnetic measurements of La0.5Ca0.5MnO3-AuNPs showed that the sample undergoes a paramagneticferromagnetic phase transition with TC = 250K and TB = 150K. Two metalinsulator transitions were observed at T1 and T2. The resistivity of the sample was observed to reduce as temperature increased to 300 K. The gravimetric method was used to determine the corrosion inhibitory properties with 1.0 M HCl using different concentration of La05Ca0.5MnO3-AuNPs. The anti-corrosion study was carried out for 21 days and was observed to reduce as concentration of La0.5Ca0.5MnO3-AuNPs increased, but corrosion rate increased as the exposure time increased. The inhibitory property of the sample increased as the concentration of the sample increased. The reaction best fitted the Langmuir isotherm, indicating a monolayer of La0.5Ca0.5MnO3-AuNPs inhibiting the corrosion of the mild steel.
IOP Conference Series: Materials Science and Engineering
A functionalized paramagnetic manganite La0.33Ca0.67MnO3 was investigated for its morphological, ... more A functionalized paramagnetic manganite La0.33Ca0.67MnO3 was investigated for its morphological, optical and antimicrobial properties. The manganite was capped by using a citrate ligand. The UV-visible spectrophotometer was used in monitoring the optical bands of the metal-citrate complex. It was observed to absorb in the visible region. The metal-citrate was reacted with a biologically active ligand (N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide). The optical bands observed from the metal-citrate were used in monitoring the reaction between the metal-citrate and N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide). The morphological property of the product formed was determined using SEM-EDAX. The effect of the complex formed on the organic ligand, N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) was determined using 1 H and 13 C NMR. The bacterial inhibitory property of the metal-citrate-N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) complex was determined against Pseudomonas aeruginosa and Staphylococcus auerus. It was observed to inhibit the growth of Staphylococcus aureus only. The biological activities of the metal-citrate N-(3-nitrophenyl)-3-phenyl-2-(phenylsulfonamido) propanamide) suggest its use as an alternative antibacterial therapy.
Journal of Biomimetics, Biomaterials and Biomedical Engineering
Coating of magnetic nanoparticles (MNPs) is usually a requirement prior to their utilization in b... more Coating of magnetic nanoparticles (MNPs) is usually a requirement prior to their utilization in biomedical applications. However, coating can influence the magneto-structural properties of MNPs thereby imparting their applications. The present work highlights the combustion synthesis of Na-doped lanthanum manganites (LNMO) and the influence of silica coatings on the magneto-structural properties, colloidal stability and antimicrobial properties of LNMO MNPs with their biomedical applications in mind. The crystalline perovskite structure was the same both for the bare and silica coated LNMO samples while there was a slight increase in crystallite size after coating. The FTIR spectral analysis, reduction in agglomeration of the particles and the elemental composition of the coated nanoparticles confirmed the presence of silica. The magnetization values of 34 emu/g and 29 emu/g recorded for bare and coated LNMO samples, respectively show that LNMO MNPs retained its ferromagnetic behavi...
Iranian Journal of Science and Technology, Transactions A: Science
Faraday discussions, 2018
Advances in Natural Sciences: Nanoscience and Nanotechnology, 2016
The effect of polyol on multiple ligand capped silver alloyed nanobimetallic particles in tri-noc... more The effect of polyol on multiple ligand capped silver alloyed nanobimetallic particles in tri-noctylphosphine oxide and oleic acid matrices View the table of contents for this issue, or go to the journal homepage for more 2016 Adv. Nat. Sci: Nanosci. Nanotechnol. 7 045012
Journal of Nano Research, 2016
The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investi... more The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investigated in drinking water and groundwater sources in Ota, Nigeria. Detected concentrations of Mn, Cu and Zn were below the World Health organization and Standard Organization of Nigeria maximum permissible limits. Fe (92%) and Ni (53%) in some drinking water and groundwater sources were found in concentrations that exceeded the maximum permissible limits for these metals. Notably, the levels of Pb were below detection limit in all the bottled, well and borehole water, with exception of the hospital borehole, while the swimming pool had high concentrations of Fe (0.88 mg/L), Pb (0.21 mg/L) and Ni (0.19mg/L) compared to SON (0.30 mg/L), WHO (0.01 mg/L) and WHO (0.07 mg/L) respectively. Pollution indices indicated significant pollution of Pb, Fe and Ni. Overall, the mean metal levels in the sampled water sources followed a descending order, Fe>Cu>Zn>Ni>Pb>Mn. Some of the drinking water and groundwater sources could be considered safe for drinking, but proactive measures should be taken to check the levels of Fe, Pb and Ni in the swimming pool.
Materials Technology, 2014
Weed and Pest Control - Conventional and New Challenges, 2013
The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investi... more The levels of six trace metals namely iron, lead, manganese, copper, zinc and nickel were investigated in drinking water and groundwater sources in Ota, Nigeria. Detected concentrations of Mn, Cu and Zn were below the World Health organization and Standard Organization of Nigeria maximum permissible limits. Fe (92%) and Ni (53%) in some drinking water and groundwater sources were found in concentrations that exceeded the maximum permissible limits for these metals. Notably, the levels of Pb were below detection limit in all the bottled, well and borehole water, with exception of the hospital borehole, while the swimming pool had high concentrations of Fe (0.88 mg/L), Pb (0.21 mg/L) and Ni (0.19mg/L) compared to SON (0.30 mg/L), WHO (0.01 mg/L) and WHO (0.07 mg/L) respectively. Pollution indices indicated significant pollution of Pb, Fe and Ni. Overall, the mean metal levels in the sampled water sources followed a descending order, Fe>Cu>Zn>Ni>Pb>Mn. Some of the drinki...
In this paper, we have solved the Schrodinger equation with a new superposed potential (IQYARP) m... more In this paper, we have solved the Schrodinger equation with a new superposed potential (IQYARP) made of inversely quadratic Yukawa potential and attractive radial potential using the parametric Nikiforov-Uvarov (NU) method. The solutions of the Schrodinger equation enabled us to obtainbound state energy eigenvalues and their corresponding un-normalized eigen functions in terms of Jacobi polynomials. Also, a special case of the potential has been considered and its energy eigen values obtained. Our calculation reveals bound state energy eigenvalues which can be applied to molecules moving under the influence of IQYARP potential.