Energy and Environment Focus最新文献

Analysis of the Effect of Hybridization of Coconut Shell Particles on Kenaf-Coir Based Epoxy Hybrid Composites 椰壳颗粒杂交对红麻-椰胶基环氧复合材料的影响分析

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1268

Shikha Parashar, V. Chawla

{"title":"Analysis of the Effect of Hybridization of Coconut Shell Particles on Kenaf-Coir Based Epoxy Hybrid Composites","authors":"Shikha Parashar, V. Chawla","doi":"10.1166/eef.2023.1268","DOIUrl":"https://doi.org/10.1166/eef.2023.1268","url":null,"abstract":"These days manufacturing and automobile industries need structures and materials that are good in strength, higher in toughness, low in weight as well as, are more sustainable in comparison to the presently used materials. Innovative materials like hybrid composite materials are gaining\u0000 a lot of attention in industrial sector. Recent research work depicts that fiber-reinforced hybrid composite can be utilized in several application areas due to their good mechanical and physical characteristics like, high strength, low weight, and higher opposition to corrosion. In this paper,\u0000 the combined effect of kenaf fibers and coconut shell nanoparticles on coir fibre reinforced epoxy composites has been investigated. Three different combinations of samples with varying content of coconut shell particles as 0, 3, 5 wt% respectively and kenaf fibres as 5, 4, 0 wt% respectively,\u0000 along with coconut fibers and epoxy matrix, have been used in the research. Results have been calculated for the three samples using six different analytical models. The results are analyzed using Representative Volume Element (RVE) analysis. The mechanical characteristics like Poisson’s\u0000 ratio, transverse modulus, longitudinal modulus, are evaluated. The outcomes of analytical modelling are in harmony with the results obtained from the RVE analysis. The outcomes of the research show that the hybridization of various fibres in the composite is among the most potent ways to\u0000 augment the attributes of composite laminates. The incorporation of coconut shell nanoparticles has also seen to increase the elastic properties of the coir kenaf epoxy hybrid nanocomposite.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73249079","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

Voltammetric Detection of Ascorbic Acid at Organic Conducting Polymers Electrodes and Flow Injection Analysis 抗坏血酸在有机导电聚合物电极上的伏安检测及流动注射分析

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1266

G. Erdoğdu

{"title":"Voltammetric Detection of Ascorbic Acid at Organic Conducting Polymers Electrodes and Flow Injection Analysis","authors":"G. Erdoğdu","doi":"10.1166/eef.2023.1266","DOIUrl":"https://doi.org/10.1166/eef.2023.1266","url":null,"abstract":"In this paper, a sensitive and rapid modified electrode for the determination of Ascorbic Acid (AA) is proposed. In this study, active compound AA was determined from commercial drug form based on electrochemical oxidation properties at various conducting polymer electrodes by voltammetric\u0000 methods. Electrodes modified by the electrodeposition of conducting organic polymers such as poly(3-methylthiophene, PMT), polypyrrole (PPY) and polyaniline (PAN) were used as chemical sensors for voltammetric analysis and flow injection detection of AA. The electrochemical behavior of AA\u0000 at conducting polymer electrodes was compared and the effects on behavior of electrolyte type and its pH and the film thickness were systematically examined. The results showed that the proposed modified surface catalyzes the oxidation of AA. Electrocatalytic efficiency decreases in order\u0000 of PMT > PPY > PAN. Voltammetric peak positions were affected by the nature of the electrolyte and its pH. Also, the effect of increasing film thickness was to observe increased peak heights for oxidation potential of AA. The best results for the determination of AA were obtained by\u0000 DPV in Na2SO4 (pH 2.0) and PMT electrodes. Polymer coated electrodes were also used in an amperometric detector for flow injection analysis of AA. The responses of the polymer electrode were 5–15 times larger as compared to those of bare platinum. PMT showed improved\u0000 performance as an amperometric detector for flow injection analysis systems over other types of polymer electrodes. Detection limits as low as 1×10−9 M were achieved using the PMT, compared to 1×10−6 M using platinum electrodes.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"83 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74544594","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

Isolation and Identification of Salt-Tolerant Mangrove Endophyte from Red Sea Coast Jeddah, Saudi Arabia 沙特阿拉伯吉达红海沿岸红树林耐盐内生植物的分离与鉴定

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1265

Mohd Munawar, K. Hakeem, H. Alharby, Y. Anwar, A. Bamagoos, M. Shah, Farooq Abdul Sattar, M. Sayeed Akhtar

{"title":"Isolation and Identification of Salt-Tolerant Mangrove Endophyte from Red Sea Coast Jeddah, Saudi Arabia","authors":"Mohd Munawar, K. Hakeem, H. Alharby, Y. Anwar, A. Bamagoos, M. Shah, Farooq Abdul Sattar, M. Sayeed Akhtar","doi":"10.1166/eef.2023.1265","DOIUrl":"https://doi.org/10.1166/eef.2023.1265","url":null,"abstract":"The aim of the study was to isolate and identify the most salt-tolerant endophytic bacteria from the mangrove plants (Avicennia marina) from the Red Sea Jeddah coastal region. In total, 21 endophytic bacteria were isolated from various parts of Avicennia marina cultured under various salt concentrations in laboratory conditions. Out of 21 endophytes, one isolate was selected based on its salt tolerance capacity, the isolate was identified as Bacillus halotolerans using 16S rRNA sequencing. The nucleotide sequence has been deposited under accession number MT858957. Bacillus halotolerans ymk 021 grows under high salinity and temperature. In response to high salinity stress (550 mM) mung bean (Vigna radiata L.) treated with B. halotolerans ymk021 showed significant results in morphological characteristics like fresh root and shoot weight, dry root and shoot weight, and root and shoot length. The ability of this salt-tolerant bacterial endophyte to produce antioxidants in plant may also resolve the major issue of oxidative damage during salinity stress. It may produce antibiotics, essential industrial enzymes too.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74238448","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

Dielectric Response of Strontium Titanate (SrTiO3)/Polycarbonate Nanocomposite Electrodes for Energy Storage 钛酸锶/聚碳酸酯纳米复合储能电极的介电响应

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1267

A. Yadav, D. Yadav, S. K. Jain, B. Tripathi, R. Katiyar

引用次数: 0

Metal-Organic Frameworks (MOFs) as Solid State Hydrogen Storage System: A Critical Review 金属-有机骨架(mof)作为固态储氢系统:综述

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1271

Khushbu Meena, Shalini Dixit, B. Tripathi

引用次数: 0

Evaluation of Saccharomyces cerevisiae Yeast Vacuoles in Conjunction with Several Lysosomal Fluorescent Dyes as Potential Biosensors to Detect Toxicants of Military Interest 酿酒酵母液泡与几种溶酶体荧光染料联合作为潜在生物传感器检测军事毒物的评价

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1262

J. Bruno

{"title":"Evaluation of Saccharomyces cerevisiae Yeast Vacuoles in Conjunction with Several Lysosomal Fluorescent Dyes as Potential Biosensors to Detect Toxicants of Military Interest","authors":"J. Bruno","doi":"10.1166/eef.2023.1262","DOIUrl":"https://doi.org/10.1166/eef.2023.1262","url":null,"abstract":"Saccharomyces cerevisiae vacuoles having the functionality of lysosomes with regard to uptake of toxicants from the environment followed by acidification and/or vacuolar membrane swelling were evaluated with several lysosome-specific fluorescent dyes to determine if any of the\u0000 toxicants on the U.S. Army’s list of chemicals for testing after water purification at or below the human lethal concentration (HLC) would invoke a yeast cell fluorescence response. Preliminary data suggest that four of the nine chemicals on the Army’s list, namely sodium azide,\u0000 mercuric chloride, nicotine, and phenol, were detectable by fluorescence at the HLC in water using carboxy-DCFDA or MDY-64 within 5 to 90 minutes of chemical exposure using quantitative fluorometric microplate analyses and microscopic fluorescence image analysis. The present work provides\u0000 proof of concept for further studies to determine if other lysosomal dyes could be used to take advantage of yeast and their vacuoles as robust and inexpensive biosensors with long shelf lives in the dehydrated state for detection of a broader array of environmental toxicants. Interestingly,\u0000 the yeast were also shown to be sensitive to hyperosmotic salt concentrations using LysoTracker Green.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"156 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76697184","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

Cerium Oxide Nanoparticles: Synthesis and Characterization Using Curcuma longa (Turmeric Rhizome) 氧化铈纳米颗粒:姜黄合成及表征

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1270

Nithin Krisshna Gunasekaran, Prathima Prabhu Tumkur, Nicole Nazario Bayon, K. Prabhakaran, Wondwossen D. Arasho, Joseph C. Hall, G. Ramesh

{"title":"Cerium Oxide Nanoparticles: Synthesis and Characterization Using Curcuma longa (Turmeric Rhizome)","authors":"Nithin Krisshna Gunasekaran, Prathima Prabhu Tumkur, Nicole Nazario Bayon, K. Prabhakaran, Wondwossen D. Arasho, Joseph C. Hall, G. Ramesh","doi":"10.1166/eef.2023.1270","DOIUrl":"https://doi.org/10.1166/eef.2023.1270","url":null,"abstract":"Cerium oxide and turmeric are widely used in the medical field because of their distinctive properties. Turmeric, predominantly used in Asian cuisines, is also an anti-inflammatory element in ayurvedic medicines. The lower bioavailability of turmeric rhizomes has restricted their medical\u0000 applications to a specific limit, both in vitro and in vivo. Previous investigations have reported that the conjugation of curcumin and cerium oxide nanoparticles improves turmeric’s stability, making them efficient in treating chronic diseases such as cancer. The main\u0000 objective of this study is to carry out the synthesis of cerium oxide nanoparticles using turmeric rhizomes. Various methods were used to characterize the cerium oxide nanoparticles. Scanning electron microscopy, energy dispersive X-ray spectroscopy, and field emission scanning electron microscopy\u0000 were used to determine the morphological properties of the cerium oxide nanoparticles. Fourier transform infrared spectroscopy and X-ray diffraction were used to determine the structural properties of those nanoparticles. The BEAS-2B cells were cultured in a controlled environment, and the\u0000 biocompatibility studies were conducted using an MTT assay to assess their cytotoxicity. Based on toxicity studies of cerium oxide nanoparticles, future research will be performed on their biomedical applications.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"52 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91399909","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

Tailoring the Band Gap of Carbon Nanoparticles in Carbon Soot by Ball Milling 球磨法裁剪碳灰中碳纳米颗粒带隙

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1263

Sandip Das, S. Pramanik, S. Mukherjee, Rajib Nath, P. Kuiri

{"title":"Tailoring the Band Gap of Carbon Nanoparticles in Carbon Soot by Ball Milling","authors":"Sandip Das, S. Pramanik, S. Mukherjee, Rajib Nath, P. Kuiri","doi":"10.1166/eef.2023.1263","DOIUrl":"https://doi.org/10.1166/eef.2023.1263","url":null,"abstract":"Carbon nanoparticles (CNPs) in carbon soot have been ball milled in air for time durations of 1, 3, and 5 hours. A reduction of the average height of CNPs, measured using atomic force microscopy, with increase in ball milling time has been observed with values about 22.54 nm, 11.09\u0000 nm, 9.48 nm, and 7.25 nm for un-milled and ball milled samples for durations of 1, 3, and 5 hours, respectively. The optical band gaps of the CNPs have been estimated from the optical absorption data with values of about 5.06 eV, 3.77 eV, 2.08 eV, and 1.55 eV for the as-synthesized CNPs and\u0000 1, 3, and 5 hours of ball milled CNPs, respectively. Such observations of reduction of height and decrease in band gap of the CNPs are due to the mainly increase in in-plane graphitic ordering in the CNPs and simultaneous attachment of oxygen from the air ambient. The ball milling provided\u0000 the required energy to acquire the in-plane graphitic order in the CNPs reducing the disorders in it. Also changes in the functional groups (formation of carbon and oxygen bonds) in the surfaces of the in-plane graphite in the CNPs can lead to the formation of graphene oxide (GO) leading to\u0000 change in the surface states which can result in decrease in band gap of the CNPs. With increase in ball milling time, amount of GO has been increased resulted in further decrease in the band gap of the CNPs.","PeriodicalId":11683,"journal":{"name":"Energy and Environment Focus","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78221587","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

Nanocubes SnO2 Thin Films for the Detection of CO Gas 用于CO气体检测的纳米立方SnO2薄膜

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1264

M. M. Patil, P. Dalal

引用次数: 0

Determination of Acetaminophen in the Presence of Ascorbic Acid at Poly(m-Aminobenzene Sulfonic Acid) Conducting Polymer Electrode 聚间氨基苯磺酸导电聚合物电极上抗坏血酸存在时对乙酰氨基酚的测定

Energy and Environment Focus Pub Date : 2023-03-01 DOI: 10.1166/eef.2023.1269

G. Erdoğdu

引用次数: 0