Pub Date : 2023-01-01DOI: 10.4236/ojpc.2023.132003
Niameke Jean-Baptiste Kangah, Nanou Tiéba Tuo, Daouda Ballo, Ahmont Landry Claude Kablan, N’goran Etienne Kouame, C. Kodjo, N. Ziao
{"title":"Synthesis, Characterization and Biological Activity Evaluation of Schiff Bases Derived from 1,8-Diaminonaphtalène","authors":"Niameke Jean-Baptiste Kangah, Nanou Tiéba Tuo, Daouda Ballo, Ahmont Landry Claude Kablan, N’goran Etienne Kouame, C. Kodjo, N. Ziao","doi":"10.4236/ojpc.2023.132003","DOIUrl":"https://doi.org/10.4236/ojpc.2023.132003","url":null,"abstract":"","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70505443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.4236/ojpc.2023.131001
Augustus Newton Ebelegi, Newman Tonizibeze Elijah, J. Godwin
{"title":"Evaluation of Physicochemical Parameters of Biosorbents Produced from Groundnut Hull Using Microwave Assisted Irradiation Method","authors":"Augustus Newton Ebelegi, Newman Tonizibeze Elijah, J. Godwin","doi":"10.4236/ojpc.2023.131001","DOIUrl":"https://doi.org/10.4236/ojpc.2023.131001","url":null,"abstract":"","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojpc.2022.121001
G. Auvert, M. Auvert
Building on the idea that molecules in liquid phase associate into multi-mo-lecular complexes through covalent bonds, the present article focuses on the possible structures of these complexes. Saturation at atomic level is a key concept to understand where connections occur and how far molecules ag-gregate. A periodic table for liquids with saturation levels is proposed, in agreement with the even-odd rule, for both organic and inorganic elements. With the aim at reaching the most stable complexes, meaning no other chemical reactions can occur in the liquid phase, the structure of complexes resulting from liquefaction of about 30 molecules is devised. The article concludes that complexes in liquids generally assume rounded shapes of an intermediate size between gas and solid structures. It shows that saturation and covalent bonds alone can explain the specific properties of liquids. While it is generally ac-knowledged that molecular energy in gases and solids are respectively linear kinetic and vibratory, we suggest that rotatory energy dominates in liquids.
{"title":"Stability in Liquid Phases of Molecular Compounds Composed of Saturated Atoms: Application with the Even-Odd Rule and a Specific Periodic Table for Liquids","authors":"G. Auvert, M. Auvert","doi":"10.4236/ojpc.2022.121001","DOIUrl":"https://doi.org/10.4236/ojpc.2022.121001","url":null,"abstract":"Building on the idea that molecules in liquid phase associate into multi-mo-lecular complexes through covalent bonds, the present article focuses on the possible structures of these complexes. Saturation at atomic level is a key concept to understand where connections occur and how far molecules ag-gregate. A periodic table for liquids with saturation levels is proposed, in agreement with the even-odd rule, for both organic and inorganic elements. With the aim at reaching the most stable complexes, meaning no other chemical reactions can occur in the liquid phase, the structure of complexes resulting from liquefaction of about 30 molecules is devised. The article concludes that complexes in liquids generally assume rounded shapes of an intermediate size between gas and solid structures. It shows that saturation and covalent bonds alone can explain the specific properties of liquids. While it is generally ac-knowledged that molecular energy in gases and solids are respectively linear kinetic and vibratory, we suggest that rotatory energy dominates in liquids.","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojpc.2022.123003
Mariette Desiree Yehe, Frédérique Yah Marie-Pierre Nikiema, Lind He, Vincent De Paul Ovi, Jean-Kisito Kouamé, Patrick Grah Atheba, Gildas Komenan Gbassi
{"title":"Influence of Some Physicochemical Exposure Factors on the Metronidazole Content of a Pharmaceutical Product: Flagyl® 250 mg Tablet","authors":"Mariette Desiree Yehe, Frédérique Yah Marie-Pierre Nikiema, Lind He, Vincent De Paul Ovi, Jean-Kisito Kouamé, Patrick Grah Atheba, Gildas Komenan Gbassi","doi":"10.4236/ojpc.2022.123003","DOIUrl":"https://doi.org/10.4236/ojpc.2022.123003","url":null,"abstract":"","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70505053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojpc.2022.122002
Ebelegi Newton Augustus, Enudi Ishioma Toneth, Makbere Anthony Bokizibe
{"title":"Determination of Physiochemical Properties of Biosorbents Synthesized from Water Melon Rind Using Microwave Assisted Irradiation Procedure","authors":"Ebelegi Newton Augustus, Enudi Ishioma Toneth, Makbere Anthony Bokizibe","doi":"10.4236/ojpc.2022.122002","DOIUrl":"https://doi.org/10.4236/ojpc.2022.122002","url":null,"abstract":"","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.4236/ojpc.2022.124004
Mougo André Tigori, Aboudramane Koné, Bamba Souleymane, D. Zon, D. Sissouma, Paulin Marius Niamien
{"title":"Combining Experimental and Quantum Chemical Study of 2-(5-Nitro-1,3-Dihydro Benzimidazol-2-Ylidene)-3-Oxo-3-(2-Oxo-2H-Chromen-3-yl) Propanenitrile as Copper Corrosion Inhibitor in Nitric Acid Solution","authors":"Mougo André Tigori, Aboudramane Koné, Bamba Souleymane, D. Zon, D. Sissouma, Paulin Marius Niamien","doi":"10.4236/ojpc.2022.124004","DOIUrl":"https://doi.org/10.4236/ojpc.2022.124004","url":null,"abstract":"","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-06DOI: 10.4236/ojpc.2021.114012
M. D. Yéhé, E. Odoh, Blaise N’guadi Allou, P. Atheba, Joel Cyriaque Dadje, G. Gbassi
In this work, an inexpensive and environmentally friendly natural adsorbent obtained from shelled (GD) and unshelled (GND) Moringa oleifera seeds was used for copper adsorption from aqueous solutions. A series of experiments were performed to assess the parameters influencing the adsorption phenomenon such as pH, adsorbent mass, adsorption equilibrium time and temperature. The kinetic results of adsorption described a pseudo-second order model. The adsorption isotherms are satisfactorily described by the Langmuir mathematical model. The thermodynamic data revealed a spontaneous and endothermic adsorption phenomenon. The level of copper in surface water before and after addition of moringa powders was carried out to verify the effectiveness of the adsorbent. A maximum adsorption rate of 51.28% and 61.96% was obtained with GD and GND powders respectively. Moringa oleifera seed powders are an effective alternative for the removal of copper from surface water.
{"title":"Modeling of Copper Adsorption by Moringa oleifera Seed Powders","authors":"M. D. Yéhé, E. Odoh, Blaise N’guadi Allou, P. Atheba, Joel Cyriaque Dadje, G. Gbassi","doi":"10.4236/ojpc.2021.114012","DOIUrl":"https://doi.org/10.4236/ojpc.2021.114012","url":null,"abstract":"In this \u0000work, an inexpensive and environmentally friendly natural adsorbent obtained \u0000from shelled (GD) and unshelled (GND) Moringa oleifera seeds was used for copper adsorption from aqueous \u0000solutions. A series of experiments were performed to assess the parameters \u0000influencing the adsorption phenomenon such \u0000as pH, adsorbent mass, adsorption equilibrium time and temperature. The kinetic results of adsorption described \u0000a pseudo-second order model. The \u0000adsorption isotherms are satisfactorily described by the Langmuir mathematical model. The thermodynamic data revealed a spontaneous and \u0000endothermic adsorption phenomenon. The level of copper in surface water before and after addition of moringa powders was \u0000carried out to verify the effectiveness of the adsorbent. A maximum adsorption \u0000rate of 51.28% and 61.96% was obtained with GD and GND powders \u0000respectively. Moringa oleifera seed powders are an effective alternative for the removal of copper from \u0000surface water.","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47619142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-06DOI: 10.4236/ojpc.2021.114013
R. A. Sizov
Experimental and theoretical studies of the author (period: 1968-present) have shown that true sources of the magnetic field are magnetic fundamental particles (magnetic charges), and not moving electrons. The main reason for ignoring real magnetic charges, as well as true antielectrons in physical science is the hard conditions for confinement of these particles in atoms and substances, which is radically different from the confinement of electrons. Magnetic charges together with electric charges form the shells atoms which are electromagnetic, and not electronic. Namely, electromagnetic shells are sources of gravitational field which is a vortex electromagnetic field and described by the vortex rot [E - H]. Depending on the state polarization of vortex vectors rot [E - H] in compositions of atomic gravitational fields it is subdivided into paragravitational (PGF) and ferrogravitational fields (FGF). The overwhelming number of atoms emits PGF. Between the masses (bodies, atoms, nucleons and others) emitting PGF areas of negative gravitational “Dark Energy” are realized the forces of which press the masses towards each other. Namely, the compression of atoms by the forces of paragravitational “Dark Energy” underlies the chemical bond. The exception here is the ionic bond in ionic crystals. However, all ions have electromagnetic shells that generate the gravitational field. Consequently, ionic bonding is a relatively rare addition to gravito-chemical bond processes. The direct gravito-chemical bond of carbon atoms with hydrogen (1H) is physically forbidden due to the manifestation of the effect of ferrogravitational levitation between them and the repulsion of atoms from each other. Paradoxically, but all existing ideas about the structural device of hydrocarbons are based on such physically forbidden bonds which, moreover, must be realized through ionic bonds which in reality do not exist. Chemical bonding of carbon and hydrogen atoms to form hydrocarbons molecules is possible only if the hydrogen atoms are in the molecular form (1H2). In the composition of water, within the framework of the chemical formula H2O, two stable isomorphic molecular structures are formed. The chemical bond in the first structure is similar to the hydrocarbon scenario described above, i.e. in the process of combining paragravitational oxygen with a hydrogen molecule 1H2. The second molecular structure in water is formed under conditions of ferropolarization of the gravitational field of oxygen atoms under the influence of FGF of neighboring 1H atoms. In this case, the chemical bond is realized under the conditions of ferropolarization of the vortex vectors rot [E - H] of the gravitational fields of all atoms in the molecule and the co-directionality of them vectors Pfp ferropolarization. The gravito-physical properties of the presented molecular structures in the composition of water make it possible to name them, respectively,
{"title":"The Gravito-Chemical Bond and Structures of Hydrocarbons and Water Molecules with Real Magnetic Charges","authors":"R. A. Sizov","doi":"10.4236/ojpc.2021.114013","DOIUrl":"https://doi.org/10.4236/ojpc.2021.114013","url":null,"abstract":"Experimental \u0000and theoretical studies of the author (period: 1968-present) have shown that \u0000true sources of the magnetic field are magnetic fundamental particles (magnetic charges), and \u0000not moving electrons. The main reason for ignoring \u0000real magnetic charges, as well as true antielectrons in physical science \u0000is the hard conditions for confinement of these particles in atoms and \u0000substances, which is radically different from the confinement of electrons. Magnetic charges \u0000together with electric charges form the shells atoms which are electromagnetic, and not electronic. Namely, electromagnetic shells are sources of gravitational \u0000field which is a vortex electromagnetic field and described \u0000by the vortex rot \u0000[E - H]. Depending on the state polarization of \u0000vortex vectors rot \u0000[E - H] in compositions of atomic gravitational fields it is subdivided into paragravitational (PGF) and \u0000ferrogravitational fields (FGF). The overwhelming number of atoms emits PGF. \u0000Between the masses (bodies, atoms, nucleons and others) emitting PGF areas of \u0000negative gravitational “Dark Energy” are realized the forces of which press the \u0000masses towards each other. Namely, the compression of atoms by the forces of paragravitational “Dark Energy” \u0000underlies the chemical bond. The exception here is the ionic bond in ionic \u0000crystals. However, all ions have electromagnetic shells that generate the \u0000gravitational field. Consequently, ionic bonding is a relatively rare addition \u0000to gravito-chemical bond processes. The direct gravito-chemical bond of carbon \u0000atoms with \u0000hydrogen (1H) is physically forbidden due to the manifestation of the \u0000effect of ferrogravitational levitation between them and the repulsion of atoms \u0000from each other. Paradoxically, but all existing ideas about the structural \u0000device of hydrocarbons are based on such physically forbidden bonds which, \u0000moreover, must be realized through ionic bonds \u0000which in reality do not exist. Chemical bonding of carbon and hydrogen atoms \u0000to form hydrocarbons molecules is possible only if the hydrogen atoms are in \u0000the molecular form (1H2). In the composition of water, \u0000within the framework of the chemical formula H2O, two stable \u0000isomorphic molecular structures are formed. The chemical bond in the first \u0000structure is similar to the hydrocarbon scenario described above, i.e. in the \u0000process of combining paragravitational oxygen with a hydrogen molecule 1H2. \u0000The second molecular structure in water is formed \u0000under conditions of ferropolarization of the gravitational field of oxygen atoms under \u0000the influence of FGF of neighboring 1H atoms. In this case, the \u0000chemical bond is realized under the conditions of ferropolarization of \u0000the vortex vectors rot \u0000[E - H] of the gravitational fields of all atoms in the \u0000molecule and the co-directionality of them vectors Pfp ferropolarization. The gravito-physical properties of the presented \u0000molecular structures in the composition of water make it possible to name them, \u0000respectively,","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70504477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-28DOI: 10.4236/ojpc.2021.113011
M. D. Yéhé, E. Odoh, P. Atheba, Joel Cyriaque Dadje, G. Gbassi
Moringa oleifera is an edible plant cultivated throughout the tropical belt. It belongs to the family Moringaceae and is one of its 14 known species. This paper presents a synthesis of the main factors responsible for the retention of trace metal elements (TMEs) by Moringa oleifera seed powder, a natural adsorbent. The five main factors studied are metal concentration, solution pH, adsorbent particle size, adsorbent dose and adsorbent/adsorbate contact time. Through these factors, we present the optimal conditions for removal of these TMEs, as well as adsorption isotherm models appropriate for the conditions of retention of these metal cations by the adsorbent. The times of 20 min (GD) and 50 min (GND) are the equilibrium times obtained in our study. An optimal adsorbent mass (GD and GND powders) of 4.5 g was found. 20% to 97% abatement is observed for average pH values between 6 and 8. The coefficients of determination (R2) obtained (0.972, 0.963, 0.991 and 0.799) during the isotherm experiments carried out at 20°C, 30°C, 40°C and 50°C are close to 1. Also, the separation factor (RL), an essential characteristic of the Langmuir isotherm whose values are between 0 and 1, attest to the applicability of the Langmuir isotherm model to fit the experimental data of copper adsorption by Moringa powders. In this paper, we are particularly interested in the following TMEs (Mn, Ni, Cr, Cu, Cd, Co, Pb, Fe, Zn, Ag).
辣木是一种可食用植物，在整个热带地区都有种植。它属于辣木科，是已知的14种之一。本文对天然吸附剂辣木籽粉吸附微量金属元素的主要因素进行了综合研究。研究了金属浓度、溶液pH、吸附剂粒径、吸附剂剂量和吸附剂/吸附剂接触时间五个主要因素。通过这些因素，我们提出了去除这些TMEs的最佳条件，以及适用于吸附剂保留这些金属阳离子条件的吸附等温线模型。20 min (GD)和50 min (GND)的时间是我们研究中得到的平衡时间。最佳吸附剂质量(GD和GND粉)为4.5 g。平均pH值在6至8之间时，可观察到20%至97%的减少。在20°C、30°C、40°C和50°C等温线实验中得到的决定系数(R2)(0.972、0.963、0.991和0.799)接近于1。Langmuir等温线的基本特征分离因子RL的取值范围在0 ~ 1之间，证明了Langmuir等温线模型对辣木粉吸附铜的实验数据的适用性。在本文中，我们对以下TMEs (Mn, Ni, Cr, Cu, Cd, Co, Pb, Fe, Zn, Ag)特别感兴趣。
{"title":"Retention Factors for Trace Metal Elements in Solid Phase and Applicable Adsorption Models: Case of Moringa oleifera","authors":"M. D. Yéhé, E. Odoh, P. Atheba, Joel Cyriaque Dadje, G. Gbassi","doi":"10.4236/ojpc.2021.113011","DOIUrl":"https://doi.org/10.4236/ojpc.2021.113011","url":null,"abstract":"Moringa oleifera is an edible plant cultivated throughout the tropical belt. It belongs \u0000to the family Moringaceae and is one of its 14 known species. This paper \u0000presents a synthesis of the main factors responsible for the retention of trace \u0000metal elements (TMEs) by Moringa oleifera seed powder, a natural adsorbent. The five main factors studied are \u0000metal concentration, solution pH, adsorbent particle size, adsorbent dose and \u0000adsorbent/adsorbate contact time. Through these factors, we present the optimal \u0000conditions for removal of these TMEs, as well as adsorption isotherm models \u0000appropriate for the conditions of retention of these metal cations by the \u0000adsorbent. The times of 20 min (GD) and 50 min (GND) are the equilibrium times \u0000obtained in our study. An optimal adsorbent mass (GD and GND powders) of 4.5 g \u0000was found. 20% to 97% \u0000abatement is observed for average pH values between 6 and 8. The coefficients \u0000of determination (R2) obtained (0.972, 0.963, 0.991 \u0000and 0.799) during the isotherm experiments carried out at 20°C, 30°C, 40°C and \u000050°C are close to 1. Also, the separation factor (RL), an \u0000essential characteristic of the Langmuir isotherm whose values are between 0 \u0000and 1, attest to the applicability of the Langmuir isotherm model to fit the \u0000experimental data of copper adsorption by Moringa powders. In this paper, we are particularly interested \u0000in the following TMEs (Mn, Ni, Cr, Cu, Cd, Co, Pb, Fe, Zn, Ag).","PeriodicalId":59839,"journal":{"name":"物理化学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45459112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：