Academic Journal of Chemistry最新文献_第3页

Synthesis and Characterization of Novel -Type Zirconium Phosphate-Crystalline Cerium Phosphate/ Polyaniline, Polyindole, Polycarbazole, Polyaniline-co-Polyindole, and Polyaniline-co-Polycarbazole Composites 新型磷酸锆-结晶磷酸铈/聚苯胺、聚吲哚、聚咔唑、聚苯胺-共聚吲哚、聚苯胺-共聚咔唑复合材料的合成与表征

Academic Journal of Chemistry Pub Date : 2021-05-30 DOI: 10.32861/AJC.62.45.59

S. Shakshooki, F. A. El-Akari, N. A. Abozaid

{"title":"Synthesis and Characterization of Novel -Type Zirconium Phosphate-Crystalline Cerium Phosphate/ Polyaniline, Polyindole, Polycarbazole, Polyaniline-co-Polyindole, and Polyaniline-co-Polycarbazole Composites","authors":"S. Shakshooki, F. A. El-Akari, N. A. Abozaid","doi":"10.32861/AJC.62.45.59","DOIUrl":"https://doi.org/10.32861/AJC.62.45.59","url":null,"abstract":"-Type zirconium phosphate,-Zr(HPO4)2-.1.77H2O (-ZrP), crystalline cerium phosphate, Ce(HPO4)2.1.33 H2O (CePc), and [-Zr(HPO4)2]0.30 [Ce (HPO4)2]0.70 .2H2O composite were prepared and characterized by chemical, XRD, TGA, FT-IR and scanning electron microscopy(SEM). [-Zr(HPO4)2]0.30[Ce(HPO4)2]0.70/polyaniline, polyindole, polycarbazole, polyaniline-co-polyindole, polyaniline-co-polycarbazole composites were prepared via in-situ chemical oxidation of the monomers aniline, indole , carbazole, and (1:1moler ratio) of co-monomers aniline-indole, aniline- carbazole, respectively, that was promoted by the reduction of part of Ce(IV) ions present in the inorganic matrix. A possible explanation is part of CePc is attacked by the monomers, and the co-monomers, respectively, converted to cerium (III) orthophosphate (CePO4). The resultant novel composites were characterized by elemental (C,H,N) analysis, FT-IR, and (SEM). From elemental (C,H,N) analysis ,the amount of organic materials present in [-Zr(HPO4)2]0.30 [Ce (HPO4)2]0.70/ polyaniline, polyindole, polycarbazole composites were (23.44, 5.24 and 33.02 % in wt. ), respectively. The amount of resultant copolymers were (Pani 5.92, PIn 7.48 % in wt) and (Pani 1.42, PCz 2.48 % in wt ) These composites can be considered as novel conducting inorganic-organic composites, ion exchangers , solid acid catalysts and sensors.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83552056","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}

引用次数: 0

Efficacy of Chitosan as a Coagulant Aid to Alum Precipitation of Congo Red In Wastewater 壳聚糖混凝剂对刚果红废水中明矾沉淀的影响

Academic Journal of Chemistry Pub Date : 2021-05-17 DOI: 10.32861/AJC.62.37.44

Adelagun Ruth Olubukola Ajoke, Magomya Asabe Mercy, Kamba Emmanuel Alhassan

{"title":"Efficacy of Chitosan as a Coagulant Aid to Alum Precipitation of Congo Red In Wastewater","authors":"Adelagun Ruth Olubukola Ajoke, Magomya Asabe Mercy, Kamba Emmanuel Alhassan","doi":"10.32861/AJC.62.37.44","DOIUrl":"https://doi.org/10.32861/AJC.62.37.44","url":null,"abstract":"The use of chitosan prepared from prawn shells as coagulant aid for congo red (CR) dye removal from wastewater was investigated in this study. Characterisation of the prepared chitosan samples showed characteristics similar to commercially available ones. The coagulation – flocculation experiment was carried out using the jar test procedure. Both chitosan and alum were used separately for the dye precipitation and then combined together. The usage of alum alone showed no precipitating effect on the CR dye molecule, while chitosan was able to considerably reduce the concentration of the dye in solution. When chitosan was used as a coagulant aid in the alum precipitation, the amount (%) of dye removed increased greatly. Optimization of the process via study of effect of pH and flocculation time at optimum alum – chitosan combination indicated that pH 4-5 and settling time of 40 min were suitable conditions for maximum decolourisation of CR dye wastewater with about 98% efficiency. Moreover, study of settling characteristics of the sludge produced from the alum-chitosan synergy was better than that produced from either of them alone. Also, occurrence of redispersion and restabilization of the precipitate was not encountered.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81236003","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}

引用次数: 0

Evaluation of Shell-Derived Calcium Oxide Catalysts for the Production of Biodiesel Esters from Cooking Oils 壳源氧化钙催化剂用于食用油制备生物柴油酯的研究

Academic Journal of Chemistry Pub Date : 2021-03-29 DOI: 10.32861/AJC.61.20.27

N. Chong, Francis Okejiri, Saidi Abdulramoni, S. Perna, B. Ooi

引用次数: 1

Determination of Proximate Composition and Anti-Nutritional Content of Cassava in Jimma Zone Ethiopia 埃塞俄比亚吉马地区木薯近似成分和抗营养成分的测定

Academic Journal of Chemistry Pub Date : 2020-12-30 DOI: 10.32861/ajc.58.116.121

Adugna Bayata

引用次数: 3

Quantification of the Content of Ten (10) Brands of Metronidazole Infusion Marketed in Abuja Metropolis by UV Spectroscopic Method 紫外光谱法定量测定阿布贾市售十(10)个品牌甲硝唑注射液的含量

Academic Journal of Chemistry Pub Date : 2020-10-23 DOI: 10.32861/ajc.58.101.105

Onavbavba Godspower, Alemede Vincent Odunayo

{"title":"Quantification of the Content of Ten (10) Brands of Metronidazole Infusion Marketed in Abuja Metropolis by UV Spectroscopic Method","authors":"Onavbavba Godspower, Alemede Vincent Odunayo","doi":"10.32861/ajc.58.101.105","DOIUrl":"https://doi.org/10.32861/ajc.58.101.105","url":null,"abstract":"The proliferation of substandard drugs is a major public health challenge, especially in developing countries which lacks adequate resources to effectively monitor their prevalence. Currently, there are no reliable statistics on the level of incidence of fake drugs in Nigeria. The quality of medicines is an integral part in ensuring that pharmaceutical products are fit for their intended use, comply with requirements of marketing authorization and do not expose consumers to risks. For this to be achieved, there must be a system of quality assurance, which incorporates aspects including product development, manufacturing, distribution, and storage. This study aimed at quantifying the content of ten (10) brands of metronidazole infusion marketed in Abuja by UV-Spectroscopic method. Ten (10) brands of metronidazole were purchased in different pharmacies within the city of Abuja and were assayed using UV-Spectroscopic method as stated in British Pharmacopoeia 2017 edition. All the ten (10) brands of metronidazole that were assayed had a percentage content of 100.97% to 108.15%. From the study carried out, all the brands of metronidazole infusion complied with the content uniformity test as stated in the British Pharmacopeia.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89038176","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}

引用次数: 0

Potential Plants for Treatment and Management of COVID-19 in Nigeria 尼日利亚治疗和管理COVID-19的潜在植物

Academic Journal of Chemistry Pub Date : 2020-06-25 DOI: 10.32861/ajc.56.69.80

B. C. I. Chiyere, O. Tochukwu, C. Enyoh, J. Uju

{"title":"Potential Plants for Treatment and Management of COVID-19 in Nigeria","authors":"B. C. I. Chiyere, O. Tochukwu, C. Enyoh, J. Uju","doi":"10.32861/ajc.56.69.80","DOIUrl":"https://doi.org/10.32861/ajc.56.69.80","url":null,"abstract":"The recent outburst of novel Coronavirus disease (COVID-19), now a global pandemic highlights an urgent need for therapeutics targeting ‘severe acute respiratory syndrome’ (SARS-CoV-2). In Nigeria, infection cases are on daily rise with death rate of ~3 %. Therefore, slowing the spread of the virus will significantly reduce the strain on the healthcare system and governments. Here, we presented local medicinal plants cultivated in Nigeria as possible therapeutic approaches, exclusively targeting SARS-CoV-2 and its pathways. The study focused on some plants containing bioactive compounds that showed promising results against previous coronaviruses. Potential plants identified include Zingiber officinale, Allium cepa, Allium sativum, echinacea, euphorbia hirta, Garcenea kola, Curcuma longa, Aleo vera and olea europaea. Although inhibition of viral replication is seen as the possible mechanism for antiviral activity of most of the natural compounds, recent research has shown that some natural compounds can interact with major viral proteins associated with virulence. Thereby, showing they could be a valuable tool for possible inhibition, management and treatment of SARS-CoV-2. However, further research is required to investigate and validate their potential use as anti-SARS-CoV-2.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83924398","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}

引用次数: 9

Synthesis of Some Bridged Unsymmetrical Terphthaloyl Oxime Esters 一些桥接不对称邻苯二甲酰肟酯的合成

Academic Journal of Chemistry Pub Date : 2020-06-10 DOI: 10.32861/ajc.56.55.57

R. Bawa, Hana Mansoure Elmajdoub

引用次数: 0

Improving Quality of Water from Murchison bay Using Clay from Chelel, Kapchorwa District, Uganda 使用来自乌干达卡普乔瓦地区Chelel的粘土改善默奇森湾水质

Academic Journal of Chemistry Pub Date : 2019-11-10 DOI: 10.32861/ajc.411.102.117

I. Mukasa-Tebandeke, I. Karume, H. Wasajja, R. Nankinga

{"title":"Improving Quality of Water from Murchison bay Using Clay from Chelel, Kapchorwa District, Uganda","authors":"I. Mukasa-Tebandeke, I. Karume, H. Wasajja, R. Nankinga","doi":"10.32861/ajc.411.102.117","DOIUrl":"https://doi.org/10.32861/ajc.411.102.117","url":null,"abstract":"Pollution resulting from increased human activities is threatening Lake Victoria, its effects are characterized by eutrophication, high turbidity, pH, iron(II) concentration and chemical oxygen demand (COD). In this study we have investigated the effect of Fe-montmorillonite clay from Chelel on turbidity, pH, concentration of iron, total suspended soils, total nutrients and COD of water sampled from Murchison bay watershed of Nakivubo channel south of Kampala. Varying amounts of clay powder was vigorously stirred with water samples for 5 minutes, filtered using Whatman paper at ambient temperatures. The optimum concentration of clay of 0.4 gL-1 was found to produce 73.5+2% fall in COD indicating elimination of microbes and organic waste. The pH of water became 6.3+ 0.2 showing that impurities had been bound to clay. The TSS and nutrients in MB water also decreased greatly when clay was stirred with water at ambient temperatures. The available data can be relied on to recommend use of this clay in treatment of waste water and/or sewage from Kampala. Further studies on combined use of clays with alums, zeolites and/or lime need to be carried out.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90940376","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}

引用次数: 1

Valorization of Typha Australis Stems in Bioethanol Production Using Enzymatic Hydrolysis and Biofermentation 利用酶水解和生物发酵技术生产生物乙醇的南菇茎的价值

Academic Journal of Chemistry Pub Date : 2019-10-25 DOI: 10.32861/ajc.410.90.95

Cosme Sagbo Kouwanou, C. P. A. Dossa, E. S. Adjou, Mossi Issiakou, V. Wotto, D. C. Sohounhloué

引用次数: 1

Chemical Characterization and Leaching Kinetics of Metals From Iron Ores 铁矿石中金属的化学表征及浸出动力学

Academic Journal of Chemistry Pub Date : 2019-04-10 DOI: 10.32861/ajc.49.69.80

A. Itodo, I. Eneji, B O B O Mnenga Mnenga, M A M A Tseen Tseen

{"title":"Chemical Characterization and Leaching Kinetics of Metals From Iron Ores","authors":"A. Itodo, I. Eneji, B O B O Mnenga Mnenga, M A M A Tseen Tseen","doi":"10.32861/ajc.49.69.80","DOIUrl":"https://doi.org/10.32861/ajc.49.69.80","url":null,"abstract":"The impact of mineral deposit on their host agricultural soil, available water bodies and near atmospheric environment is of great concern. In this study, mineralogical characterization and leaching kinetics of metals from iron ores in Kogi States, were reported. Physicochemical parameters namely; electrical density, pH, bulk density and moisture content were also investigated. The SEM image of the iron ore appear compact with irregular shape. XRF analysis showed that, iron ore consist of 63.44 % Fe as major element, with the oxide composition of 90.71%. The XRD analysis of iron ore unveiled the presence of magnetite (88 %), hematite (9 %) and quartz (3 %) as associated mineral. Low concentration of iron (0.77-1.70 ppm) was observed to be leached from iron ore in the acidic medium, 0.35-1.10 ppm from basic medium and 0.32-0.88 ppm in the aqueous medium, The Shrinking core, Product-layer diffusion and leaching, controlled by diffusion were the three equations used to model the leaching parameters. The\u0000leaching experimental data of iron ore fit best into the diffusion- controlled model, with R2 = 0.94 for the acidic medium Hence, the rate determining step. The analysis shows good fit for the other kinetic models. Overall, result proved that, the environment around mining sites is chiefly contaminated by the metals leached from the ore\u0000(mineral) deposits. Hence, the need to monitor the pollution indices, the role of leaching, pollutant fate (transport and reaction) and the subsequent distribution of metals to neighboring environment.","PeriodicalId":6965,"journal":{"name":"Academic Journal of Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79281589","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}

引用次数: 2