NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech最新文献

{"title":"Synthesis and characterization of silver and gold nanoparticles decorated reduced graphene oxide","authors":"Nurshahidah Ali, F. Yasin","doi":"10.1063/1.5124647","DOIUrl":"https://doi.org/10.1063/1.5124647","url":null,"abstract":"In this work, a facile method is proposed to synthesis graphene oxide (GO), reduced graphene oxide (rGO), silver and gold nanoparticles with 1:3 volume ratio decorated onto reduced graphene oxide (Ag1Au3/rGO). A chemical reduction route using sodium citrate as reducing agents have been used to prepared the as-synthesized samples. The produced samples have been characterized using Raman spectroscopy, UV-Visible, X-Ray Diffraction spectroscopy and High Resolution Transmission Electron Microscopy. The removal of oxygen containing groups from the graphene oxide to reduced graphene oxide was confirmed by intensity ratio (ID/IG) between the D and G band appeared at the peak. The change in optical properties of the product authenticated by the shift in the absorption peak and formation of silver and gold nanoparticles was determined by XRD spectroscopy. The morphological results illustrate that silver and gold nanoparticles decorated reduced graphene oxide formed stable dispersions and well distributed on the reduced graphene oxide surface with 10 nm – 40 nm of particle size.In this work, a facile method is proposed to synthesis graphene oxide (GO), reduced graphene oxide (rGO), silver and gold nanoparticles with 1:3 volume ratio decorated onto reduced graphene oxide (Ag1Au3/rGO). A chemical reduction route using sodium citrate as reducing agents have been used to prepared the as-synthesized samples. The produced samples have been characterized using Raman spectroscopy, UV-Visible, X-Ray Diffraction spectroscopy and High Resolution Transmission Electron Microscopy. The removal of oxygen containing groups from the graphene oxide to reduced graphene oxide was confirmed by intensity ratio (ID/IG) between the D and G band appeared at the peak. The change in optical properties of the product authenticated by the shift in the absorption peak and formation of silver and gold nanoparticles was determined by XRD spectroscopy. The morphological results illustrate that silver and gold nanoparticles decorated reduced graphene oxide formed stable dispersions and well distributed on the re...","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115580144","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}

{"title":"Fabrications of PS/TiO2 nanocomposite for solar cells applications","authors":"Maytham Qabel Hamzah, A. Jabbar, Salim Oudah Mezan, Alaa Nihad Tuama, M. Agam","doi":"10.1063/1.5124641","DOIUrl":"https://doi.org/10.1063/1.5124641","url":null,"abstract":"The search for alternative energy sources has led us to develop solar energy as one of the primary solutions. Infallible Preparation of Titanium Dioxide (TiO2) by Sol-Gel technique then embedded into polystyrene (PS) with different ratios to fabricate PS/TiO2 nanocomposite for solar cell usage. The Crystalline framework of TiO2 and PS/TiO2 were investigated through X-ray diffraction (XRD) in determining of its crystal size. UV-Visible Spectroscopy gave the relation between the absorbance and wavelength of the materials. The evolution of electrical properties of PS/TiO2 nanocomposite is investigated to set the optimum parameter in fabrication PS/TiO2 as solar cell materials.The search for alternative energy sources has led us to develop solar energy as one of the primary solutions. Infallible Preparation of Titanium Dioxide (TiO2) by Sol-Gel technique then embedded into polystyrene (PS) with different ratios to fabricate PS/TiO2 nanocomposite for solar cell usage. The Crystalline framework of TiO2 and PS/TiO2 were investigated through X-ray diffraction (XRD) in determining of its crystal size. UV-Visible Spectroscopy gave the relation between the absorbance and wavelength of the materials. The evolution of electrical properties of PS/TiO2 nanocomposite is investigated to set the optimum parameter in fabrication PS/TiO2 as solar cell materials.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128633972","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}

{"title":"Synthesis and characterization of magnetite (Fe3O4) nanoparticles with different level of aniline dimer-COOH by co precipitation method","authors":"Z. I. Takai, M. K. Mustafa, S. Asman","doi":"10.1063/1.5124670","DOIUrl":"https://doi.org/10.1063/1.5124670","url":null,"abstract":"The morphologies of the magnetite (Fe3O4) nanoparticles with certain level of aniline dimer-COOH were prepared via assisted co-precipitation method. The Fe3O4 nanoparticles morphologies are observed by Field Emission Scanning Electron Microscope (FESEM) and the result shows that, the Fe3O4 nanoparticles prepared with aniline dimer-COOH is agglomerated and more spherical in shape and size. The phase analysis of the Fe3O4 nanoparticles was perform by X-ray Diffraction spectra (XRD), the result indicates that, the particles prepared with littlie amount of aniline dimer-COOH have more peaks compare to the uncapped Fe3O4 nanoparticles. However, the molecular structure and functional group of Fe3O4 nanoparticles were studied using Fourier Transform Infrared Spectra (FTIR) and the result proven the appearance Fe-O band of the molecules.The morphologies of the magnetite (Fe3O4) nanoparticles with certain level of aniline dimer-COOH were prepared via assisted co-precipitation method. The Fe3O4 nanoparticles morphologies are observed by Field Emission Scanning Electron Microscope (FESEM) and the result shows that, the Fe3O4 nanoparticles prepared with aniline dimer-COOH is agglomerated and more spherical in shape and size. The phase analysis of the Fe3O4 nanoparticles was perform by X-ray Diffraction spectra (XRD), the result indicates that, the particles prepared with littlie amount of aniline dimer-COOH have more peaks compare to the uncapped Fe3O4 nanoparticles. However, the molecular structure and functional group of Fe3O4 nanoparticles were studied using Fourier Transform Infrared Spectra (FTIR) and the result proven the appearance Fe-O band of the molecules.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121177932","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}

{"title":"Synthesis of nano-hematite (Fe2O3) extracted from natural iron ore prepared by mechanical alloying method","authors":"Z. Jalil, A. Rahwanto, F. Mulana, E. Handoko","doi":"10.1063/1.5124671","DOIUrl":"https://doi.org/10.1063/1.5124671","url":null,"abstract":"In this paper, the mineral composition and magnetic behavior of nano iron oxide of iron ore from Lhoong mining area, Aceh province were studied. The iron ore was prepared by mechanical alloying met...","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122382674","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}

{"title":"Enhanced bioactivity of polystyrene-silver nanocomposite (PS/Ag NCs)-an antimicrobial study","authors":"A. Jabbar, Salim Oudah Mezan, Alaa Nihad Tuama, Maytham Qabel Hamzah, A. Ameruddin, M. Agam","doi":"10.1063/1.5124632","DOIUrl":"https://doi.org/10.1063/1.5124632","url":null,"abstract":"Polystyrene has been widely used as everyday materials and silver has been found as an anti-bacterial agent. Combination of polystyrene and silver into a polymer-metal composites (PS/ Ag NCs) could...","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114356996","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}

{"title":"Analysis of light absorption with variation of epidermis thickness in human skin model using Monte Carlo simulation","authors":"A. A. A. Halim, M. H. Laili, M. Rusop","doi":"10.1063/1.5124638","DOIUrl":"https://doi.org/10.1063/1.5124638","url":null,"abstract":"The sensitivity of the oxygenation detection using non-invasive light visible and near infrared range during muscle activation is clinically important. Monte Carlo simulations have been performed to determine light propagation based on epidermal thickness of human skin model. All perimeters such as absorption coefficient, scattering coefficient and anisotropy factor of the five layers samples in the visible spectral range from 600 to 900 nm was determined in this paper. In order to assess the predictability of our simulations, we evaluate their accuracy by comparing results from the model with actual skin measured data. The parameters was estimated using root-mean-squared error of less than 5% for epidermal thickness from (0.001 to 0.2) cm of human skin model under the visible part of the spectrum. The change in optical density is significantly decreased and the linearity of measurement characteristics is clearly distorted by the presence of a larger thickness layer of epidermis about maximum 0.2 cm. Thus, suitable modelling of light propagation passing through epidermis layer in a human muscle is important for quantitative near-infrared spectroscopy and optical imaging for muscle activation studies.The sensitivity of the oxygenation detection using non-invasive light visible and near infrared range during muscle activation is clinically important. Monte Carlo simulations have been performed to determine light propagation based on epidermal thickness of human skin model. All perimeters such as absorption coefficient, scattering coefficient and anisotropy factor of the five layers samples in the visible spectral range from 600 to 900 nm was determined in this paper. In order to assess the predictability of our simulations, we evaluate their accuracy by comparing results from the model with actual skin measured data. The parameters was estimated using root-mean-squared error of less than 5% for epidermal thickness from (0.001 to 0.2) cm of human skin model under the visible part of the spectrum. The change in optical density is significantly decreased and the linearity of measurement characteristics is clearly distorted by the presence of a larger thickness layer of epidermis about maximum 0.2 cm. Thus...","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131633029","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}

{"title":"Fractionation of waste nitrile butadiene rubber (NBR) latex sludge","authors":"M. Hazan, M. S. Mamat, I. Ismail, M. Hussein, Y. Yaakob","doi":"10.1063/1.5124642","DOIUrl":"https://doi.org/10.1063/1.5124642","url":null,"abstract":"NBR is one of the common rubber used in oil and gas sector, automotive sector and gloves manufacturing. Conversion of solid waste Nitrile Butadiene Rubber (NBR) latex sludge into liquid can be done by using fractional distillation method. The solid waste NBR was heat above its decompose temperature to evaporate the polymer in form of vapor and will be condensed by condenser column into liquid form. The decomposed temperature of waste NBR was determined by Thermogravimetric (TGA) analyzer which is at 450 °C. The processed hydrocarbon liquid was characterized by using Carbon Nitrogen Sulphur (CNS) analyzer, and Gas Chromatography Mass Spectroscopy (GCMS) analyzer. Sulfur is the main compound exist in the waste NBR latex sludge which is 0.73670 % as it being added for vulcanization process. The carbon and nitrogen percentage are 0.17419 % and 0.16479 %.NBR is one of the common rubber used in oil and gas sector, automotive sector and gloves manufacturing. Conversion of solid waste Nitrile Butadiene Rubber (NBR) latex sludge into liquid can be done by using fractional distillation method. The solid waste NBR was heat above its decompose temperature to evaporate the polymer in form of vapor and will be condensed by condenser column into liquid form. The decomposed temperature of waste NBR was determined by Thermogravimetric (TGA) analyzer which is at 450 °C. The processed hydrocarbon liquid was characterized by using Carbon Nitrogen Sulphur (CNS) analyzer, and Gas Chromatography Mass Spectroscopy (GCMS) analyzer. Sulfur is the main compound exist in the waste NBR latex sludge which is 0.73670 % as it being added for vulcanization process. The carbon and nitrogen percentage are 0.17419 % and 0.16479 %.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129907310","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}

{"title":"Photovoltaic performance of dye-sensitized solar cells based nanoporous-network Nb2O5","authors":"R. A. Rani, A. Zoolfakar, M. Rusop","doi":"10.1063/1.5124660","DOIUrl":"https://doi.org/10.1063/1.5124660","url":null,"abstract":"In this research, sputtered niobium metal on FTO glass was used as an initial material. Fabrication of nanoporous network Nb2O5 has been conducted via anodization technique and tested as a photoanode in dye-sensitized solar cells (DSSC). The nanoporous network Nb2O5 with N3 dye has successfully demonstrated 1.3 to 3.5% efficiency based on ∼3.5 and 5.0 µm thicknesses. The high performance of the nanoporous network Nb2O5 is expected due to long electron life time as observed from the voltage decay measurement.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130165181","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}

{"title":"Synthesis, characterization, and properties of polystyrene/SiO2 nanocomposite via sol-gel process","authors":"Salim Oudah Mezan, A. Jabbar, Maytham Qabel Hamzah, Alaa Nihad Tuama, N. Hasan, M. Roslan, M. Agam","doi":"10.1063/1.5124664","DOIUrl":"https://doi.org/10.1063/1.5124664","url":null,"abstract":"Polystyrene/Silica Nanocomposites (PS/Si NCs) are attractive material due to their stability (chemical and thermal), low toxicity, the probability from controlling their particle size, ability to be functionalized with a range of molecules and polymers, biocompatibility, degradability below physiographic statuses and low-cost production of materials. In that paper now, The procedure to fabricate polystyrene/silica (PS/SiO2) hybrid hollow spheres did successfully combine by precipitation technique, which was then used to react with silica nanoparticles that were prepared by the sol-gel method to fabricate PS/SiO2 nanocomposite. Four Point Probe, Transition electron microscopy (TEM), and XRD are used to analyze the physical, chemical, optical properties and electric of polystyrene/SiO2 nanocomposites. The experimental effects indicate the possibilities for PS/SiO2 to be used as biomaterials, coating and catalyst materials.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348971","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}

{"title":"Physical and chemical properties of cement with nano black rice husk ash","authors":"R. Jaya, Mohd Ibrahim Mohd Yusak, M. R. Hainin, N. Mashros, M. N. Warid, Mohamad I. Ali, M. Ibrahim","doi":"10.1063/1.5124654","DOIUrl":"https://doi.org/10.1063/1.5124654","url":null,"abstract":"The existing of pores and micro-crack in the hardened cement paste influences the strength itself. Nano silica produced from BRHA has been used in this study. Nano BRHA replacement levels of 0%, 10%, 20% and 30% by weight of cement were applied. The TGA/DTA and XRD has been conducted for hardened cement paste powder to analyses the effect of different partial replacement of Nano BRHA. It was found that the weight loss results for Ca(OH)2 seems decreasing with increasing in Nano BRHA replacement. The higher CSH percentage contained in cement paste was 10% of Nano BRHA replacement.The existing of pores and micro-crack in the hardened cement paste influences the strength itself. Nano silica produced from BRHA has been used in this study. Nano BRHA replacement levels of 0%, 10%, 20% and 30% by weight of cement were applied. The TGA/DTA and XRD has been conducted for hardened cement paste powder to analyses the effect of different partial replacement of Nano BRHA. It was found that the weight loss results for Ca(OH)2 seems decreasing with increasing in Nano BRHA replacement. The higher CSH percentage contained in cement paste was 10% of Nano BRHA replacement.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131504766","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}