Procedia Chemistry最新文献_第7页

Investigation and Characterization of ZnO Nanostructures Synthesized by Electrochemical Deposition 电化学沉积法制备ZnO纳米结构的研究与表征

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.119

C.F. Mah, F.K. Yam, Z. Hassan

引用次数: 13

Assessment of the Reaction Time on the Morphology and Quality of Carbon Nanotubes – Silica Microparticles 反应时间对碳纳米管-二氧化硅微粒形貌和质量的影响

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.055

Raja N. Othman , Arthur N. Wilkinson

{"title":"Assessment of the Reaction Time on the Morphology and Quality of Carbon Nanotubes – Silica Microparticles","authors":"Raja N. Othman , Arthur N. Wilkinson","doi":"10.1016/j.proche.2016.03.055","DOIUrl":"10.1016/j.proche.2016.03.055","url":null,"abstract":"<div><p>Carbon nanotube has been grafted in-situ on the surface of spherical silica gel via floating-catalyst chemical vapour deposition method. The reaction temperature was set to be 760°C and 5wt. % of ferrocene catalyst (dissolved in toluene) injected into the furnace at a rate of 0.04ml/min. The reaction time was varied from 1 hour to 8hours, with one hour interval. It was found that the reaction time of 3hours yields the best quality hybrid particles. Prolonging the reaction time more than 3hours resulted in the formation of CNT that consists of thicker tubes, based on the observation via Field Emission Scanning Electron Microscope (FESEM) and Transmission Electron Microscope (TEM). Secondary overgrowth was observed via TEM for tubes synthesized at 7hours and 8hours. These results were in agreement with Raman Spectroscopy analysis where the I<sub>G</sub>/I<sub>D</sub> ratio were very small, indicating high defects and impurities in the samples synthesized at reaction time higher than 3hours.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81568008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Physical and Structural Transformations of Perlis Carbonate Rocks via Mechanical Activation Route 机械活化作用下Perlis碳酸盐岩物理结构转变

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.069

T.N.A.S. Tengku Mustafa, S.R.R. Munusamy, D.N. Uy Lan, N.F.M. Yunos

{"title":"Physical and Structural Transformations of Perlis Carbonate Rocks via Mechanical Activation Route","authors":"T.N.A.S. Tengku Mustafa, S.R.R. Munusamy, D.N. Uy Lan, N.F.M. Yunos","doi":"10.1016/j.proche.2016.03.069","DOIUrl":"10.1016/j.proche.2016.03.069","url":null,"abstract":"<div><p>Carbonate rocks were mechanically activated in a high energy planetary ball mill using dry grinding method. The fine grinding test works were carried out with the same ball to powder ratio (9:1) at three levels of revolution speed (250rpm, 350rpm and 450rpm) and grinding time (30min, 60min, 90min) respectively. The chemical composition and elemental constituents of the raw dolomite and limestone samples were determined using X-ray fluorescence (XRF) and energy dispersive X-ray spectroscopy (EDX). The structural properties such as degree of crystallinity (DOC), crystallite sizes and lattice strains of non-activated and mechanically activated carbonate rocks were analyzed using X-ray diffraction (XRD) while the morphological analysis conducted using scanning electron microscopy (SEM). Results obtained showed that high revolution speed and longer grinding duration have pronounced effect on the grindability, increase in fineness, decrease in crystallite sizes and amorphization of Perlis dolomite compared to the limestone source. This might be due to the difference in material hardness and existence of appreciable amount of quartz content in limestones.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83950163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Development of Mathematical Model of H2O-HNO3-UO2(NO3)2-TBP-diluent System H2O-HNO3-UO2(NO3)2- tbp稀释体系数学模型的建立

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.10.072

Alexander Ochkin, Dmitry Gladilov, Sergey Nekhaevskiy, Alexey Merkushkin

引用次数: 1

Electrocoagulation Process by Using Aluminium and Stainless Steel Electrodes to Treat Total Chromium, Colour and Turbidity 铝和不锈钢电极电混凝法处理总铬、色度和浊度

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.070

Mohd Khairul Nizam Mahmad , M.A.Z. Mohd Remy Rozainy , Ismail Abustan , Norlia Baharun

{"title":"Electrocoagulation Process by Using Aluminium and Stainless Steel Electrodes to Treat Total Chromium, Colour and Turbidity","authors":"Mohd Khairul Nizam Mahmad , M.A.Z. Mohd Remy Rozainy , Ismail Abustan , Norlia Baharun","doi":"10.1016/j.proche.2016.03.070","DOIUrl":"10.1016/j.proche.2016.03.070","url":null,"abstract":"<div><p>The research works involve the study of removal of Total Chromium, Colour and Turbidity contaminations in landfill leachate by electrocoagulation process. This project focused on leachate landfill from Pulau Burung, Nibong Tebal, Penang as an electrolyte solution. Heavy metals are the main factor contributing to pollution in leachate landfill. Leachate is the main pollution factors from landfill sites and must be treated before it is released into the environment<sup>1</sup>. Landfill leachate contain high amount of heavy metals that can cause serious health problems to human, if the wastewater that contained heavy metals is not treated properly<sup>2</sup>. This project tried to reduce and treat the heavy metal that contain in the landfill leachate. Types of electrodes used in this study were Aluminium (grade 5052) and Stainless Steel (grade 316). The ranges of initial pH applied were pH (3, 4, 5, 6 and 7) and voltages applied were 1.5V, 2.0V and 2.5V. At the end of electrocoagulation process, the solutions were stored and analysed using Atomic Absorption Spectroscopy (AAS) to determine the final concentration of electrolyte solution. It was found that, the difference electrodes have different effectiveness in removing Total Chromium, colour and turbidity, relies on the types of electrodes (Aluminium or Stainless Steel). Based on the result, can be concluded that Aluminium Electrodes are best for removal of turbidity and colour. Stainless Steel Electrodes is best for removal Total Chromium. The initial pH also gives the significant effect to removal of heavy metal and the maximum voltages give higher removal of heavy metal.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.070","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83576073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 58

Effect of Immersion Duration in Liquid Nitrogen for Cryorolled A5052 Aluminium Sheet Alloy 液氮浸泡时间对冷轧A5052铝合金的影响

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.100

N.M. Anas, W.L. Quah, H. Zuhailawati, A.S. Anasyida

引用次数: 14

Refractive Index Measurement in Sucrose Solution and Beverage Using Surface Plasmon Resonance Sensor Based on Hetero-core Structured Fiber Optic 基于异芯结构光纤的表面等离子体共振传感器测量蔗糖溶液和饮料中的折射率

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.07.020

Atsushi Seki, Kohei Narita, Kazuhiro Watanabe

引用次数: 19

In vitro Evaluation of Mesoporous Carbonated Hydroxyapatite in MC3T3-E1 Osteoblast Cells MC3T3-E1成骨细胞中介孔碳化羟基磷灰石的体外研究

Procedia Chemistry Pub Date : 2016-01-01 DOI: 10.1016/j.proche.2016.03.103

Nur Farahiyah Mohammad , Radzali Othman , Nurul Asma Abdullah , Fei Yee Yeoh