Pub Date : 2019-01-01DOI: 10.20431/2349-0403.0608003
{"title":"Experimental Study on Potential use of Bagasse Ash-Cement Blend in Mortar","authors":"","doi":"10.20431/2349-0403.0608003","DOIUrl":"https://doi.org/10.20431/2349-0403.0608003","url":null,"abstract":"","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73922633","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 : 2019-01-01DOI: 10.20431/2349-0403.0609001
O. Ali, R. Ramadan, A. S. Sayed
Transition metal compounds containing Schiff base ligands have been of great interest for many years [1]. In particular, complexes with N2O2 Schiff bases have been widely reported [2-4] and used as biological models to understand the structures of biomolecules and biological processes [5,6]. Their instant and enduring popularity undoubtedly stems from the ease with which they can be synthesized, their puzzling versatility and their wide ranging complexing ability once formed. These compounds play an important role in the coordination chemistry related to catalysis and enzymatic reactions, magnetism and molecular architectures [7]. Not only have they played a seminal role in the development of modern co-ordination chemistry [8], but they can also be found at key points in the development of inorganic biochemistry [9], catalysis [10, 11], medical imaging [12], optical materials [13] and thin films [14, 15]. As a continuation of our previous work dealing with the study of the interaction of metal carbonyl with Schiff bases [16-21], we report here the synthesis and characterization of M (CO)6 (M=Cr or Mo) with bis-(salicylaldehyde) ethylendiimine (salenH2) in presence of 2-aminobenzothiazole, thiourea or triphenylphosphine. 2. EXPERIMENTAL
{"title":"Synthesis, Spectral, Thermal and Magnetic Studies of Chromium and Molybdenum Carbonyl Complexes Containing N2O2 Donor Sites","authors":"O. Ali, R. Ramadan, A. S. Sayed","doi":"10.20431/2349-0403.0609001","DOIUrl":"https://doi.org/10.20431/2349-0403.0609001","url":null,"abstract":"Transition metal compounds containing Schiff base ligands have been of great interest for many years [1]. In particular, complexes with N2O2 Schiff bases have been widely reported [2-4] and used as biological models to understand the structures of biomolecules and biological processes [5,6]. Their instant and enduring popularity undoubtedly stems from the ease with which they can be synthesized, their puzzling versatility and their wide ranging complexing ability once formed. These compounds play an important role in the coordination chemistry related to catalysis and enzymatic reactions, magnetism and molecular architectures [7]. Not only have they played a seminal role in the development of modern co-ordination chemistry [8], but they can also be found at key points in the development of inorganic biochemistry [9], catalysis [10, 11], medical imaging [12], optical materials [13] and thin films [14, 15]. As a continuation of our previous work dealing with the study of the interaction of metal carbonyl with Schiff bases [16-21], we report here the synthesis and characterization of M (CO)6 (M=Cr or Mo) with bis-(salicylaldehyde) ethylendiimine (salenH2) in presence of 2-aminobenzothiazole, thiourea or triphenylphosphine. 2. EXPERIMENTAL","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"65 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85279659","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 : 2019-01-01DOI: 10.20431/2349-0403.0604002
M. M. Silaev
A free radical may be low-reactive if its unpaired p-electron may be delocalized, e.g., over conjugated bonds as in the case of allyl radical CH2=CHĊH2 or along a double bond from carbon to the more electron-affine oxygen as in the case of formyl radical HĊ=O. Note that the activity of a free radical is also connected to the reaction heat in which it participates. In nonbranched-chain processes of reactive free radical (addend) addition to double bonds of molecules, the formation of rather low-reactive free radicals in reactions, which are parallel to or competing with propagation via a reactive radicals, lead to chain termination, because these low-reactive radicals do not participate in further chain propagation and because they decay when colliding with each other or with chain-carrier reactive radicals thus resulting in inefficient expenditure of the latter and process inhibition.
{"title":"New Kinetic Models of Free-Radical Nonbranched-Chain Addition to C=C, C=O, and O=O Molecular Bonds","authors":"M. M. Silaev","doi":"10.20431/2349-0403.0604002","DOIUrl":"https://doi.org/10.20431/2349-0403.0604002","url":null,"abstract":"A free radical may be low-reactive if its unpaired p-electron may be delocalized, e.g., over conjugated bonds as in the case of allyl radical CH2=CHĊH2 or along a double bond from carbon to the more electron-affine oxygen as in the case of formyl radical HĊ=O. Note that the activity of a free radical is also connected to the reaction heat in which it participates. In nonbranched-chain processes of reactive free radical (addend) addition to double bonds of molecules, the formation of rather low-reactive free radicals in reactions, which are parallel to or competing with propagation via a reactive radicals, lead to chain termination, because these low-reactive radicals do not participate in further chain propagation and because they decay when colliding with each other or with chain-carrier reactive radicals thus resulting in inefficient expenditure of the latter and process inhibition.","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77291149","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 : 2019-01-01DOI: 10.20431/2349-0403.0605003
Sen Lv, Yiqing Sun, Ying-lai Yang, Z. Niu, Yingying Wen
Quinolones (QNs) are the most important class of synthetic antibiotics in human and veterinary medicines. They are effective to control a wide range of bacteria, both gram positive and negative as well as other bacteria and often used in the treatment of a range of illnesses. Due to the fact that its resistance in the environment can cause undesirable effects on aquatic ecosystems and human health, QNs have obtained growing attention [1,2]. Therefore, the analysis of the occurrence, distribution and risks of quinolone antibiotics became crucial to environment monitoring.
{"title":"Determination of Quinolones in Human Urine and Water Samples by Ultrasound Assisted Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Droplet Followed High Performance Liquid Chromatography","authors":"Sen Lv, Yiqing Sun, Ying-lai Yang, Z. Niu, Yingying Wen","doi":"10.20431/2349-0403.0605003","DOIUrl":"https://doi.org/10.20431/2349-0403.0605003","url":null,"abstract":"Quinolones (QNs) are the most important class of synthetic antibiotics in human and veterinary medicines. They are effective to control a wide range of bacteria, both gram positive and negative as well as other bacteria and often used in the treatment of a range of illnesses. Due to the fact that its resistance in the environment can cause undesirable effects on aquatic ecosystems and human health, QNs have obtained growing attention [1,2]. Therefore, the analysis of the occurrence, distribution and risks of quinolone antibiotics became crucial to environment monitoring.","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90772538","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 : 2019-01-01DOI: 10.20431/2349-0403.0606003
A. D. Kayode, S. Sunday, S. Oluyemi, Olusegun Samson, Olayinka Abidemi, Abisola Hellen
Variety of clays and clay minerals play an important role in the environment and used as an effective adsorbent material for the removal of toxic metal ions from water solution (Crini, 2010). The use of clays as adsorbent have advantages upon many other commercially available adsorbents in terms of low-cost, an abundant availability, high specific surface area, excellent adsorption properties, nontoxic nature, and large potential for ion exchange (Crini and Badot, 2010; Gupta et al., 2013; Rao et al., 2014; Rao et al., 2015). Clays also contain exchangeable cations and anions held to the surface (Miranda-Trevino and Coles, 2003; Crini and Badot, 2010). For these reasons, the attention of scientists worldwide has been focused on using natural or modified clay materials as adsorbent for water treatment.
各种粘土和粘土矿物在环境中发挥着重要作用，被用作去除水溶液中有毒金属离子的有效吸附材料(Crini, 2010)。使用粘土作为吸附剂与许多其他市售吸附剂相比，具有成本低、可用性丰富、比表面积高、吸附性能好、无毒、离子交换潜力大等优点(Crini和Badot, 2010;Gupta et al.， 2013;Rao et al.， 2014;Rao等人，2015)。粘土还含有保持在表面的可交换阳离子和阴离子(Miranda-Trevino and Coles, 2003;Crini and Badot, 2010)。因此，利用天然或改性粘土材料作为吸附剂进行水处理一直是全世界科学家关注的焦点。
{"title":"Clay Soil Modification Techniques for the Adsorption of Heavy Metals in Aqueous Medium: A Review","authors":"A. D. Kayode, S. Sunday, S. Oluyemi, Olusegun Samson, Olayinka Abidemi, Abisola Hellen","doi":"10.20431/2349-0403.0606003","DOIUrl":"https://doi.org/10.20431/2349-0403.0606003","url":null,"abstract":"Variety of clays and clay minerals play an important role in the environment and used as an effective adsorbent material for the removal of toxic metal ions from water solution (Crini, 2010). The use of clays as adsorbent have advantages upon many other commercially available adsorbents in terms of low-cost, an abundant availability, high specific surface area, excellent adsorption properties, nontoxic nature, and large potential for ion exchange (Crini and Badot, 2010; Gupta et al., 2013; Rao et al., 2014; Rao et al., 2015). Clays also contain exchangeable cations and anions held to the surface (Miranda-Trevino and Coles, 2003; Crini and Badot, 2010). For these reasons, the attention of scientists worldwide has been focused on using natural or modified clay materials as adsorbent for water treatment.","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89727362","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 : 2019-01-01DOI: 10.20431/2349-0403.0605001
A. NkafamiyaI.
Despite the influence of modern drugs the use of medicinal plants has remained a very important aspect of health care delivery system especially in rural areas. It was reported that 80% of world’s population relies on traditional medicines as primary source of their medication (Newman, 2006). The plant based preparations were central to traditional practice of health care system where herbs and different parts of medicinal plants are employed. Medicinal plants have some medicinal values based on folkloric usage and information. It was reported that plants are natural reservoir of therapeutic agents use by the local communities in the treatment of many diseases (Akinniyi and Tella, 1991). The clinical success of plant-based drugs has rekindled interest in research into medicinal plants as potential sources of new drugs. In some countries like China, India and Vietnam the research in to Abstract: Antimicrobial activity of some medicinal plants traditionally used by local communities in the treatment of tuberculosis and other respiratory diseases was carried out. The antimicrobial activity of the plants extracts against some microbial pathogens was investigated as preliminary study to screen the plants for their anti-tuberculosis activity. The antimicrobial test was done using agar disc diffusion method and the minimum inhibitory concentration (MIC) was also determined by Micro broth dilution method. The result indicated that the extracts had varied activity against the tested organisms. The extracts also showed dose dependent antimicrobial activity but significantly lower than the standard antibiotic drugs (ciprofloxacin and Ketoconazole). The extract of E. hirta has no activity against E. coli at the tested concentrations but shown the zone of inhibition range from 1016mm for other tested organisms. E. hirta has MIC of 15μg/ml against K. pneumonia and C.albicans and 30mg/ml for B.subtilis, S. typhi and S aureus. The extract of C. mucronata has shown zone of inhibition range from 1216mm but it has no activity against B. subtilis at the tested concentrations. It has MIC of 15μg/ml against C.albicans, B. subtilis, K.pneumonia, E.coli and 30μg/ml against S. aureus. The stem bark extract of X. americana has shown the zone of inhibition range of 10-16mm and active against all the tested organisms. It has MIC of 15μg/ml against S. aureus and K. pneumonia. The leaf extract of W. indica has shown zone of inhibition ranging from 1116mm. It was active against all the tested pathogens and exhibited MIC of 15μg/ml against S. aureus and C. albicans. The leaf extract of P. reticulatum has shown the zone of inhibition ranges from 9-15mm against the tested organisms. It exhibited MIC of 15μg/ml against S. typhi. The aerial parts extract of S. hermonthica has shown zone of inhibition ranges from 1216mm. The extract has shown the zone of inhibition (12, 14 and 16mm) against C. albicans at the concentration of 15, 30 and 60 μg/ml respectively. But the extract has no
{"title":"Antimicrobial Activity of Some Selected Medicinal Plants in Some Northern Parts of Bauchi State, Nigeria","authors":"A. NkafamiyaI.","doi":"10.20431/2349-0403.0605001","DOIUrl":"https://doi.org/10.20431/2349-0403.0605001","url":null,"abstract":"Despite the influence of modern drugs the use of medicinal plants has remained a very important aspect of health care delivery system especially in rural areas. It was reported that 80% of world’s population relies on traditional medicines as primary source of their medication (Newman, 2006). The plant based preparations were central to traditional practice of health care system where herbs and different parts of medicinal plants are employed. Medicinal plants have some medicinal values based on folkloric usage and information. It was reported that plants are natural reservoir of therapeutic agents use by the local communities in the treatment of many diseases (Akinniyi and Tella, 1991). The clinical success of plant-based drugs has rekindled interest in research into medicinal plants as potential sources of new drugs. In some countries like China, India and Vietnam the research in to Abstract: Antimicrobial activity of some medicinal plants traditionally used by local communities in the treatment of tuberculosis and other respiratory diseases was carried out. The antimicrobial activity of the plants extracts against some microbial pathogens was investigated as preliminary study to screen the plants for their anti-tuberculosis activity. The antimicrobial test was done using agar disc diffusion method and the minimum inhibitory concentration (MIC) was also determined by Micro broth dilution method. The result indicated that the extracts had varied activity against the tested organisms. The extracts also showed dose dependent antimicrobial activity but significantly lower than the standard antibiotic drugs (ciprofloxacin and Ketoconazole). The extract of E. hirta has no activity against E. coli at the tested concentrations but shown the zone of inhibition range from 1016mm for other tested organisms. E. hirta has MIC of 15μg/ml against K. pneumonia and C.albicans and 30mg/ml for B.subtilis, S. typhi and S aureus. The extract of C. mucronata has shown zone of inhibition range from 1216mm but it has no activity against B. subtilis at the tested concentrations. It has MIC of 15μg/ml against C.albicans, B. subtilis, K.pneumonia, E.coli and 30μg/ml against S. aureus. The stem bark extract of X. americana has shown the zone of inhibition range of 10-16mm and active against all the tested organisms. It has MIC of 15μg/ml against S. aureus and K. pneumonia. The leaf extract of W. indica has shown zone of inhibition ranging from 1116mm. It was active against all the tested pathogens and exhibited MIC of 15μg/ml against S. aureus and C. albicans. The leaf extract of P. reticulatum has shown the zone of inhibition ranges from 9-15mm against the tested organisms. It exhibited MIC of 15μg/ml against S. typhi. The aerial parts extract of S. hermonthica has shown zone of inhibition ranges from 1216mm. The extract has shown the zone of inhibition (12, 14 and 16mm) against C. albicans at the concentration of 15, 30 and 60 μg/ml respectively. But the extract has no ","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89777042","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 : 2019-01-01DOI: 10.20431/2349-0403.0611004
M. F. Júnior, N. Rocha, W. Pereira, P. Nadine, Merlo, M. G. Gomes, P. O. Rodrigues
Experimental or estimated results of thermodynamic properties of sublimation and vaporization enthalpy of several long chain alcohols have been reported by researchers [1–12]. Also, heat of formation of them in the liquid and solid phase are available. Inthis work these data are appliedin two differents equations to calculate enthalpy of fusion. Moreover, it could be possible to verify ifthe experimental data for fusion enthalpy available in NIST National Institute of Standards and Technology (https://webbook.nist.gov/chemistry)can be considered reliable for using in projects purpose.
{"title":"The Published Fusion Enthalpy and its Influence on Solubility Estimation for Alcohols","authors":"M. F. Júnior, N. Rocha, W. Pereira, P. Nadine, Merlo, M. G. Gomes, P. O. Rodrigues","doi":"10.20431/2349-0403.0611004","DOIUrl":"https://doi.org/10.20431/2349-0403.0611004","url":null,"abstract":"Experimental or estimated results of thermodynamic properties of sublimation and vaporization enthalpy of several long chain alcohols have been reported by researchers [1–12]. Also, heat of formation of them in the liquid and solid phase are available. Inthis work these data are appliedin two differents equations to calculate enthalpy of fusion. Moreover, it could be possible to verify ifthe experimental data for fusion enthalpy available in NIST National Institute of Standards and Technology (https://webbook.nist.gov/chemistry)can be considered reliable for using in projects purpose.","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85200942","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 : 2019-01-01DOI: 10.20431/2349-0403.0601005
C. Lavorato, P. Argurio, Samir M. EL-Medania, R. Molinari
Among the main chemical transformations, currently applied in industrial practices, reduction processes, such as the reduction of carbonyl compounds in the corresponding alcohols, play an important role in organic synthesis [1-3]. In particular, acetophenone (AP) hydrogenation has been widely studied since the resultant reduction product, 1-phenylethyl alcohol or also phenyl ethanol (PE), is a common precursor for the preparation of analgesic and anti-inflammatory drugs as well as fragrances and perfumes [4-6].
{"title":"TiO2 and Pd/TiO2 as Photocatalysts for Hydrogenation of Ketones and Perspective of Membrane Application","authors":"C. Lavorato, P. Argurio, Samir M. EL-Medania, R. Molinari","doi":"10.20431/2349-0403.0601005","DOIUrl":"https://doi.org/10.20431/2349-0403.0601005","url":null,"abstract":"Among the main chemical transformations, currently applied in industrial practices, reduction processes, such as the reduction of carbonyl compounds in the corresponding alcohols, play an important role in organic synthesis [1-3]. In particular, acetophenone (AP) hydrogenation has been widely studied since the resultant reduction product, 1-phenylethyl alcohol or also phenyl ethanol (PE), is a common precursor for the preparation of analgesic and anti-inflammatory drugs as well as fragrances and perfumes [4-6].","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74580483","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 : 2019-01-01DOI: 10.20431/2349-0403.0610002
O. Ali, S. M. El‐Medani, A. S. Sayed
Schiff bases are considered as a very important class of organic compounds because of their ability to form stable complexes with many different transition metal ions in various oxidation states [1-10]. These complexes have wide applications in some biological aspects [11-20], catalytic activity [21-22] and fluorescence properties [23]. Several Schiff bases have recently been investigated as corrosion inhibitors for various metals and alloys in acid media [24, 25]. The inhibition of corrosion by Schiff bases can be attributed to its molecules with π-electrons of –C=Ngroups and π-electrons of aromatic ring. Conjugating large p bond through which its molecules are likely to be adsorbed strongly on the metal surface. Coordination numbers of lanthanide complexes are in range from six to twelve, eight and nine being the most common coordination numbers. Lanthanides are weak Lewis acids and preferably coordinate to hard Lewis bases like oxygen. In this paper, we report synthesis of eight Schiff base complexes of Cu(II), Ni(II), Co(II), Zn(II), Hg(II), Fe(III), La(III) and Sm(III)metal ions. The complexes were characterized by elemental analysis, solid reflectance, FT-IR and fluorescence spectroscopy, thermal analysis and molar conductance. Also, the inhibition effects of the studied compounds on the corrosion of stainless steel 410 (SS410) in H2SO4 1M solutions were investigated.
{"title":"Spectroscopic, Thermal, Fluorescence Studies and Antibacterial Activity of Some Transition Metals with Schiff Base 2-[(2- Furylmethylene) Amino] Benzoic Acid","authors":"O. Ali, S. M. El‐Medani, A. S. Sayed","doi":"10.20431/2349-0403.0610002","DOIUrl":"https://doi.org/10.20431/2349-0403.0610002","url":null,"abstract":"Schiff bases are considered as a very important class of organic compounds because of their ability to form stable complexes with many different transition metal ions in various oxidation states [1-10]. These complexes have wide applications in some biological aspects [11-20], catalytic activity [21-22] and fluorescence properties [23]. Several Schiff bases have recently been investigated as corrosion inhibitors for various metals and alloys in acid media [24, 25]. The inhibition of corrosion by Schiff bases can be attributed to its molecules with π-electrons of –C=Ngroups and π-electrons of aromatic ring. Conjugating large p bond through which its molecules are likely to be adsorbed strongly on the metal surface. Coordination numbers of lanthanide complexes are in range from six to twelve, eight and nine being the most common coordination numbers. Lanthanides are weak Lewis acids and preferably coordinate to hard Lewis bases like oxygen. In this paper, we report synthesis of eight Schiff base complexes of Cu(II), Ni(II), Co(II), Zn(II), Hg(II), Fe(III), La(III) and Sm(III)metal ions. The complexes were characterized by elemental analysis, solid reflectance, FT-IR and fluorescence spectroscopy, thermal analysis and molar conductance. Also, the inhibition effects of the studied compounds on the corrosion of stainless steel 410 (SS410) in H2SO4 1M solutions were investigated.","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82437029","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 : 2019-01-01DOI: 10.20431/2349-0403.0611002
V. Vasiliev, V. Smirnov
After isolation of individual graphene nano sheets in 2004, the worldwide interest to graphene and graphene-like materials was drastically increased. Today, graphene-like materials with graphene properties are considered be obtained in large amounts from graphene oxide which is easily synthesized from graphite in ‘mild’ conditions. Graphene oxide (GO) was initially considered as a source product for the production of grapheme. However, GO itself is the subject of active studies to be used in various materials and devices [1–8].
{"title":"A Review on the Conductive Properties of Graphene Oxide Films","authors":"V. Vasiliev, V. Smirnov","doi":"10.20431/2349-0403.0611002","DOIUrl":"https://doi.org/10.20431/2349-0403.0611002","url":null,"abstract":"After isolation of individual graphene nano sheets in 2004, the worldwide interest to graphene and graphene-like materials was drastically increased. Today, graphene-like materials with graphene properties are considered be obtained in large amounts from graphene oxide which is easily synthesized from graphite in ‘mild’ conditions. Graphene oxide (GO) was initially considered as a source product for the production of grapheme. However, GO itself is the subject of active studies to be used in various materials and devices [1–8].","PeriodicalId":13721,"journal":{"name":"International Journal of Advanced Research in Chemical Science","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87827752","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}
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