IOSR Journal of Applied Chemistry最新文献_第6页

One Pot Hydrothermal Synthesis Characterizations Of Silver Nanoparticles On Reduced Graphene Oxide For Its Enhanced Antibacterial And Antioxidant Properties. 还原氧化石墨烯上一锅水热合成纳米银增强抗菌和抗氧化性能的表征

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005016469

R. Rajeswari, H. Prabu, Dr.M. Amutha

引用次数: 7

Synthesis, Characterisation and Antimicrobial Activity of Dimeric and Monomeric Copper(II)-Schiff base Complexes 二聚体和单体铜(II)-席夫碱配合物的合成、表征及抗菌活性

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-0912015462

Ane F. Santos, L. Oliveira, J. Maia

{"title":"Synthesis, Characterisation and Antimicrobial Activity of Dimeric and Monomeric Copper(II)-Schiff base Complexes","authors":"Ane F. Santos, L. Oliveira, J. Maia","doi":"10.9790/5736-0912015462","DOIUrl":"https://doi.org/10.9790/5736-0912015462","url":null,"abstract":"Novel copper(II)-Schiff base derivatives were prepared in 1:1 and 1:2 (M:L) molar ratio reaction in ethanol. These compounds were characterized by infrared, UV-VIS, conductivity measurements, elemental analysis and melting point (decomposition). Dimers of general formula [Cu(L)(H2O)]2.H2O {L = 3-hmp (1) or 4-hmp (3)} and [Cu(hmyp)Cl2]2 (4) were prepared and a monomer of [Cu(3-hmp)2(H2O)Cl2].H2O (2). These chemicals are non-electrolytes and have the chloride ions bonded to the metal in terminal, bridging and trans position to the metal, performing geometric patterns of a square planar and square pyramidal arrangements. The UV-VIS of these complexes showed electronic transitions of molar extinction coefficients () between 10 and 10 3 L mol -1 cm -1 related to Metal-to-Ligand Charge Transfer (MLCT) bands and d-d transitions. The bioassay of the ligands and the metal derivatives were screened against Gram-positive (Staphylococcus aureus and Bacillus subtillis), and Gram-negative (Escherichia coli and Salmonella typhimurium) microorganisms. Complex-4 and the ligands hmyp and 4-hmp showed minimum inhibition concentration (MIC) in the range of 190 to 1020 M (40 to 350 g mL) against these microorganisms but complex-1, 2 and 3 were not active.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74649590","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

Studies on Anti-Inflammation Activity of Phenols Using Newly Introduced Balaban Indices 用新引入的Balaban指数研究酚类化合物的抗炎活性

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005012022

Dipika Sharma, Priyanka Mukadam

引用次数: 0

Study of Process Parameters for Making Biodegradable Linear Low Density Polyethylene in Natural Weathering Conditions 自然风化条件下可降解线性低密度聚乙烯制备工艺参数研究

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005027990

R. Amin, D. Begum, A. Gafur

引用次数: 0

Structural And Supercapacitive Performance Of V2O5 Thin Films Prepared By DC Magnetron Sputtering 直流磁控溅射制备V2O5薄膜的结构和超电容性能

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005026469

G. Sandhya, M. Dhananjaya, N. Guru-Prakash, A. Lakshmi-Narayana, P. Rosaiah, O. Hussain

引用次数: 2

Characterization of Physicochemical Water Quality Parameters of River Gudar (Oromia region, West Shewa Zone, Ethiopia) for Drinking Purpose 古达尔河(埃塞俄比亚西谢瓦地区奥罗米亚地区)饮用水质理化参数表征

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005014752

Bizualem Wakuma Olbasa

{"title":"Characterization of Physicochemical Water Quality Parameters of River Gudar (Oromia region, West Shewa Zone, Ethiopia) for Drinking Purpose","authors":"Bizualem Wakuma Olbasa","doi":"10.9790/5736-1005014752","DOIUrl":"https://doi.org/10.9790/5736-1005014752","url":null,"abstract":"Due to various natural and anthropogenic activities, quality of water was deteriorated in most towns of the country. These changes make or forced the community to depend on unsafe and poor water consumption. River Gudar is one of the rivers found in towns of the country, and exposed to many anthropogenic activities done around the town. Importance of river Gudar is strongly linked to Domestic consumption, Irrigation, Industrial (HAEF) and other public health. Under the investigation physicochemical parameters and selected heavy metals for the quality of river Gudar for drinking purpose were characterized. The laboratory results for both physicochemical parameters and selected heavy metals were: Alkalinity (154 ± 15.556 mg/L), pH (8.44), Electrical Conductivity (316.47 ± 72.802 Scm -1 ), TDS (149.37 ± 20.64 mg/L), Ammonia (41.00 ± 1.19 mg/L), Phosphate (3.50 ± 0.32mg/L), Total Hardness (156.87 ± 8.46 mg/L CaCO3), Sodium (17.44 ± 2.87mg/L), Potassium (8.51 ± 0.33 mg/L) and some selected heavy metals such as Cu (0.29 ± 0.04 mg/L ), Pb (2.5 ± 0.25 mg/L), Zn (0.63 ± 0.24 mg/L), Cd (0.79 ± 0.19 mg/L) and Ag (0.35 ± 0.17 mg/L) for water sample.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73891110","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: 4

Effect of Chemical Treatment on the Morphology and Mechanical Properties of Plantain (Musa paradisiaca) Fiber 化学处理对车前草纤维形态和力学性能的影响

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005017073

Patrick Ehi Imoisili, O. Fadare, A. Popoola, A. Okoronkwo

引用次数: 14

Synthesis of (3-Cyano-4, 5, 6, 7-Tetrahydrobenzo [B] Thiophen-2- Yl) Formamidine Derivatives as Effective Antimicrobial Agents (3-氰- 4,5,6,7 -四氢苯并[B]噻吩-2-基)甲脒衍生物的合成

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-10050296100

Poonam S. Patil, S. Chavan, R. Toche, A. D. Bhole, V. Patil, Pankaj B. Aware

引用次数: 1

Dioscorea dumetorum Pax as an Alternative Starch Source for Industrial Applications 作为工业应用替代淀粉源的薯蓣

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005020513

O. OluwasinaO., J. WahabO., C. UmunnaQ., O. C. Nwosa

{"title":"Dioscorea dumetorum Pax as an Alternative Starch Source for Industrial Applications","authors":"O. OluwasinaO., J. WahabO., C. UmunnaQ., O. C. Nwosa","doi":"10.9790/5736-1005020513","DOIUrl":"https://doi.org/10.9790/5736-1005020513","url":null,"abstract":"The increasing use of starch as alternative raw material for petroleum based chemical has been creating pressure on the food chain as most starches are obtained from food sources like cassava. There is therefore need to secure alternative starch source from non-edible underutilized plant materials. This study seeks evaluate the suitability of starch extracted from wild bitter yam (DioscoreadumetorumPax) for industrial applications, by comparing its physicochemical properties with that of cassava starch. Results revealed that bitter yam starch has relatively better physicochemical parameters. It possesses a desirable lower moisture content of 10.69±0.09% against 12.38±0.03% of cassava starch. Amylose/amylopectin percentage ratio was 75.79±1/24.21±1.00 and 78.40±1.77/21.60±1.77 for bitter yam and cassava starch respectively. Furthermore, the higher swelling capacities, moisture sorption capacity and gelatinization temperature recorded for bitter yam starch are pointer to its potential in certain food-related applications; paints, paper and adhesives production; and as pharmaceutical excipients. The ash content and pH was found to be 0.437±0.15% and 6.9±0.2 for bitter yam starch while cassava starch recorded 0.418±0.17% and 8±0.4. All the obtained values are within the recommended official specification for starch and suggest that bitter yam starch could be a promising source of cheap starch for industrial uses.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74207700","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

Synthesis of micro-particles using Hydrocotyle Ranunculoides (Floating Water Pennywort) and their use in Cadmium adsorption. 浮水蒿子叶微颗粒的合成及其在镉吸附中的应用

IOSR Journal of Applied Chemistry Pub Date : 2017-05-01 DOI: 10.9790/5736-1005021423

Nichodimus Hokonya, C. Mahamadi

{"title":"Synthesis of micro-particles using Hydrocotyle Ranunculoides (Floating Water Pennywort) and their use in Cadmium adsorption.","authors":"Nichodimus Hokonya, C. Mahamadi","doi":"10.9790/5736-1005021423","DOIUrl":"https://doi.org/10.9790/5736-1005021423","url":null,"abstract":"Microparticles were prepared using Hydrocotyle ranunculoides (Floating Water Pennywort) and subsequently used as adsorbent for Cd(II) from aqueous solution in batch systems. The optimum conditions for Cd (II) adsorption were investigated by varying the parameters: initial Cd (II) concentration, pH value, contact time, and adsorbent dose. It was shown that the optimum parameters for Cd(II) adsorption were pH 5.0, dosage 2 g/L, initial Cd (II) concentration 50 mg/L and contact time 240 minutes. The results showed a Langmuir maximum adsorption value of 20.41 mg/g and a separation factor between 0.72 and 0.91, suggesting a feasible adsorption process. An E value of 5.59 kJ/mol which was obtained using the Dubinin Radushkevich model indicated that the adsorption process was physical in nature. The structure of micro-particles was characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), and Energy-Dispersive X-ray spectroscopy (EDX). The EDX profile shows that most inorganic impurities present were totally removed during the steam explosion process. The functional groups present in micro-particles, which have the potential to take part in adsorption are hydroxyl groups as confirmed by the FT-IR spectra. The study showed that the material is a good adsorbent.","PeriodicalId":14488,"journal":{"name":"IOSR Journal of Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74991575","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