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Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

Nano-Micro Letters 2020年第2期12卷 224-234页

作者： hafsa siddiqui MSQureshi Fozia Zia Haque Department of Physics Sha-Shib College of Science and ManagementBhopal 462030India Optical Nanomaterial Lab Department of PhysicsMaulana Azad National Institute of TechnologyBhopal 462003India

Copper oxide nanoflowers(CuO-NFs)have been synthesized through a novel green route using Tulsi leaves-extracted eugenol(4-allyl-2-methoxyphenol)as reducing *** results reveal the growth of crystalline singlephase CuO-NFs with monoclinic *** prepared CuO-NFs can effectively degrade methylene blue with 90%*** also show strong barrier against ***(27±2 mm)at the concentration of 100μg mL−1,while at the concentration of 25μg mL−1 weak barrier has been found against all examined bacterial *** results provide important evidence that CuO-NFs have sustainable performance in methylene blue degradation as well as bacterial organisms.

关键词： Copper oxide O.Sanctum Eugenol Biosynthesis Photocatalysis Antibacterial

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Lithium-Doped CuO Nanosheets:Structural Transformation,Optical,and Electrical Characteristics with Enhanced Photocatalytic and Solar Cell Performance

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Energy & Environmental Materials 2021年第4期4卷 646-657页

作者： hafsa siddiqui Mohammad Shums Qureshi Fozia Z.Haque Optical Nanomaterial Lab Department of PhysicsMaulana Azad National Institute of TechnologyBhopal 462003India Department of Physics Sha-Shib College of Science and ManagementBhopal 462036India

Energy and environmental stuff are two of the main worries for humanity,and nanoscience plays a key role in providing the *** nanoresearch activities have attracted lot of attention in the current ***,designing the material with enhanced optoelectronic properties remains the foremost *** the present work,the Li doped CuO nanosheets are synthesized by the chemical route and examined in photovoltaics and environmental remediation *** crystallographic and optical study reveals that crystallite size and bandgap decrease with an increase in lithium-doping concentration up to 5 mole%and beyond that a reverse trend is ***,impedance study has shown the significant contribution of lithium-ions to the total capacitance and ***,the photoactivity of Cu_(1-x)Li_(x)O nanosheets(optimum concentration of Cu_(1-x)Li_(x)O NSs(x=0.05))is projected to the degradation of methylene blue(MB)and used to fabricate bulk heterojunction solar cell together with P3HT and PCBM blend,*** ITO/PEDOT:PSS/P3 HT:PC_(70)BM:Cu_(1-x)Li_(x)O(x=0.05)/Li F/Al solar cell realized higher power-conversion efficiencyη~3.91 than their corresponding pristine deviceη~2.98 with enhanced photocurrent density from 9.026 to 11.56 m A cm^(-2).The proliferation in photocatalysts and solar cells efficiency of Cu_(1-x)Li_(x)O(x=0.05)is mainly attributed to the higher light absorption and lesser electron-hole *** approach for the synthesis of Cu_(1-x)Li_(x)O NSs as potential donor material and device prototypes fabricated is completely safe and cost-effective.

关键词： current density efficiency nanostructures photocatalysts solar cells

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Update on clinical and research application of fecal biomarkers for gastrointestinal diseases

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2017年第1期8卷 39-46页

作者： Imran siddiqui hafsa Majid Shahab Abid Section of Chemical Pathology Department of Pathology and Laboratory Medicine Section of Gastroenterology Department of Medicine Aga Khan University

Gastrointestinal(GI) diseases comprise a large spectrum of clinical conditions ranging from indigestion to inflammatory bowel diseases(IBDs) and carcinomas. Endoscopy is the usual method employed to diagnose these condition. Another noninvasive way to assess and diagnose GI conditions are fecal biomarkers. Fecal biomarkers provide information regarding a specific disease process and are perhaps more acceptable to clinicians and patients alike because of their non-invasivity compared to endoscopy. Aim of this review was to evaluate the current status of the fecal biomarkers in clinical and research for in GI diseases. Multiple types of fecal biomarkers are discussed in this review including; markers to assess IBD, which are released as a results of an inflammatory insults to intestinal epithelia such as antimicrobial peptides(lactoferrin) or inflammation related proteins(calprotectin). While markers related to function of digestion are primarily related to partially digested food or mucosal proteins such as abnormal amount of fecal fat α1-antitrypsin, elastase and secretary IgA. The upcoming fecal biomarker like M2 pyruvate kinase and neutrophil gelatinase associated lipocalin are discussed as well. Apart from above mention, the fecal biomarkers under exploration for possible clinical use in future are also discussed. These include cathelicidins, osteoprotegerin, β-glucuronidase, Eosinophil proteins, etc.

关键词： Biomarkers Gastrointestinal diseases Inflammation Lactoferrin Calprotectin

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