Pub Date : 2020-10-30DOI: 10.22052/JNS.2020.04.008
Fahimeh Ardeshiri-Lordejani, T. Sharifi, M. Salami, Ahmad Qazanfari, Masoud Soheili
In the modern lifestyle, environmental stresses have substantially influenced human life. Evidence indicates that noise exposure can lead to anxiety-like behaviors. In recent years, advances in nanotechnology have favorably impacted industrial productions. In the present study, we aimed to evaluate the effect of Zinc/Iron oxide nanocomposites on anxiety-like behavior. Using gelatin, Zinc/Iron oxide nanocomposites were synthesized by the sol-gel modified method. Four groups of rats were exposed to sound stress for 12 days. Three groups received 1.25, 2.5, and 5 mg/kg of Zinc/Iron oxide nanocomposites before the noise stress. Also, three control animals received the same doses of the nanocomposites. One group of the stressed (ST) and control (CO) rats received saline. The animals were introduced to the elevated plus maze (EPM) for the assessment of anxiety. Entry to closed arms, duration of stay in open arms were considered for data analysis. We observed a significant difference between the behavior of the CO and ST animals so that the latter group showed more anxiety compared to the former one. Concerning the effect of Zinc/Iron oxide nanocomposites, the data analysis confirmed the positive effect of the dose of 2.5 mg/kg where the stressed animals treated with this dose of the nanocomposites considerably improved their normal performance in the EPM.
{"title":"Zinc/Iron oxide nanocomposites: Green synthesis, characterization, and evaluation of their effects on anxiety in rats exposed to noise stress.","authors":"Fahimeh Ardeshiri-Lordejani, T. Sharifi, M. Salami, Ahmad Qazanfari, Masoud Soheili","doi":"10.22052/JNS.2020.04.008","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.008","url":null,"abstract":"In the modern lifestyle, environmental stresses have substantially influenced human life. Evidence indicates that noise exposure can lead to anxiety-like behaviors. In recent years, advances in nanotechnology have favorably impacted industrial productions. In the present study, we aimed to evaluate the effect of Zinc/Iron oxide nanocomposites on anxiety-like behavior. Using gelatin, Zinc/Iron oxide nanocomposites were synthesized by the sol-gel modified method. Four groups of rats were exposed to sound stress for 12 days. Three groups received 1.25, 2.5, and 5 mg/kg of Zinc/Iron oxide nanocomposites before the noise stress. Also, three control animals received the same doses of the nanocomposites. One group of the stressed (ST) and control (CO) rats received saline. The animals were introduced to the elevated plus maze (EPM) for the assessment of anxiety. Entry to closed arms, duration of stay in open arms were considered for data analysis. We observed a significant difference between the behavior of the CO and ST animals so that the latter group showed more anxiety compared to the former one. Concerning the effect of Zinc/Iron oxide nanocomposites, the data analysis confirmed the positive effect of the dose of 2.5 mg/kg where the stressed animals treated with this dose of the nanocomposites considerably improved their normal performance in the EPM.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"702-712"},"PeriodicalIF":1.4,"publicationDate":"2020-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45952845","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.006
N. Moezi, Mohammad Karbalaei
In this paper the electrical characteristics of a nano scale silicon gate-all-around field effect transistor (GAA-FET) with different dielectrics in the gate electrode are predicted. For this, we first calibrate physics based TCAD simulator against experimental results reported by IBM. Then the device electrical figures of merit comprised of ION/IOFF, transconductance (gm) and subthreshold slope (SS) are extracted. The obtained results show that utilizing various high-k gate dielectrics has a noticeable impact on the device performance. Different high-k gate dielectrics comprised of Al2O3, Si3N4 and HfO2 are explored in our study. Moreover, when high-k gate dielectric is used instead of conventional SiO2 insulator, the electrical characteristics will be improved in terms of ION/IOFF ratio, transconductance to drive current ratio (gm/IDS) and SS. Based on our simulations and obtained results, scaling GAA-FETs by utilizing high-k dielectrics offers superior electronic devices and promising candidates for “more Moore” domain and integrated circuit applications.
{"title":"Predictive physics based simulation of nano scale gate-all-around field effect transistor under the influence of high-k gate dielectrics","authors":"N. Moezi, Mohammad Karbalaei","doi":"10.22052/JNS.2020.04.006","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.006","url":null,"abstract":"In this paper the electrical characteristics of a nano scale silicon gate-all-around field effect transistor (GAA-FET) with different dielectrics in the gate electrode are predicted. For this, we first calibrate physics based TCAD simulator against experimental results reported by IBM. Then the device electrical figures of merit comprised of ION/IOFF, transconductance (gm) and subthreshold slope (SS) are extracted. The obtained results show that utilizing various high-k gate dielectrics has a noticeable impact on the device performance. Different high-k gate dielectrics comprised of Al2O3, Si3N4 and HfO2 are explored in our study. Moreover, when high-k gate dielectric is used instead of conventional SiO2 insulator, the electrical characteristics will be improved in terms of ION/IOFF ratio, transconductance to drive current ratio (gm/IDS) and SS. Based on our simulations and obtained results, scaling GAA-FETs by utilizing high-k dielectrics offers superior electronic devices and promising candidates for “more Moore” domain and integrated circuit applications.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"736-743"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43637522","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.012
Kuhdhair Mohammed Mahdi, H. A. Alshamsi, Qahtan A. Yousif
In the present work, the zinc oxide nanoparticle and its composite have prepared with the graphene as a photoanode electrode as well as synthesizing an excellent thin film from the PEDOT: PSS, which is conductive polymer loading with MWCNT as an auxiliary electrode for the DSSC. The photoanode characterized using ( XRD, FTIR, Raman spectroscopy, BET-BJH, and UV-DRS). The FESEM and AFM performed to study morphology and structure of ZnO, ZnO/Graphene, and PEDOT: PSS/MWCNT thin films. The results confirm a successful fabrication of the thin films on the ITO by using the electrophoretic deposition method as well the added of graphene reduced the band gap close to 3.0eV. Moreover, the PEDOT: PSS/MWCNT nanocomposite based an auxiliary electrode offered high electrical conductivity, which enhanced the photovoltaic values of DSSC. The BET-BJH results demonstrated of the synthesis of zinc oxide nanoparticles at the surface area 6.66 m2/g and pore size 1.42 m3/g.
{"title":"Graphene sheets incorporation in ZnO nanostructure thin film for enhancing the performance of DSSC","authors":"Kuhdhair Mohammed Mahdi, H. A. Alshamsi, Qahtan A. Yousif","doi":"10.22052/JNS.2020.04.012","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.012","url":null,"abstract":"In the present work, the zinc oxide nanoparticle and its composite have prepared with the graphene as a photoanode electrode as well as synthesizing an excellent thin film from the PEDOT: PSS, which is conductive polymer loading with MWCNT as an auxiliary electrode for the DSSC. The photoanode characterized using ( XRD, FTIR, Raman spectroscopy, BET-BJH, and UV-DRS). The FESEM and AFM performed to study morphology and structure of ZnO, ZnO/Graphene, and PEDOT: PSS/MWCNT thin films. The results confirm a successful fabrication of the thin films on the ITO by using the electrophoretic deposition method as well the added of graphene reduced the band gap close to 3.0eV. Moreover, the PEDOT: PSS/MWCNT nanocomposite based an auxiliary electrode offered high electrical conductivity, which enhanced the photovoltaic values of DSSC. The BET-BJH results demonstrated of the synthesis of zinc oxide nanoparticles at the surface area 6.66 m2/g and pore size 1.42 m3/g.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"793-801"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42274917","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.013
M. Abrodi, Amir Homayoun Keihan
In this research, a new photocatalyst of TiO2/en-MIL-101 (Cr) was synthesized via hydrothermal method. The as-prepared hetrostructure material was characterized by X-ray diffraction, Fourier Transform Infrared Spectrometer, energy dispersive X-ray spectroscopy, ultraviolet-visible diffuse reflection spectra, scanning and transmission electron microscopy. The photodegradation of rhodamine B by the synthesized photocatalysts was investigated under UV irradiation and visible light. The results showed that immobilization of TiO2 on the surface and inside the photocatalytic structure enhanced the degradation of the pollutant. The band gap energy of the synthesized TiO2/en-MIL-101(Cr) measured by ultraviolet-visible diffuse reflection spectra showed that an insignificant shift to lower energy was situated after immobilization onto the structure of the supports. The relationship between the photocatalytic activity and the structure of TiO2/en-MIL-101(Cr) hetrostructure was discussed. The degradation efficiency of 84% and 77% of rhodamine B was respectively obtained by TiO2/en-MIL-101(Cr) under Uv and visible light, respectively. This work has introduced a new way for using the MOF in the design of photocatalyst substrate for organic dyes degradation in waste water.
{"title":"Comparative photocatalytic performance of TiO2 and TiO2/en-MIL-101 (Cr) for degradation of rhodamine B as a model of pollutant under UV and visible irradiations","authors":"M. Abrodi, Amir Homayoun Keihan","doi":"10.22052/JNS.2020.04.013","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.013","url":null,"abstract":"In this research, a new photocatalyst of TiO2/en-MIL-101 (Cr) was synthesized via hydrothermal method. The as-prepared hetrostructure material was characterized by X-ray diffraction, Fourier Transform Infrared Spectrometer, energy dispersive X-ray spectroscopy, ultraviolet-visible diffuse reflection spectra, scanning and transmission electron microscopy. The photodegradation of rhodamine B by the synthesized photocatalysts was investigated under UV irradiation and visible light. The results showed that immobilization of TiO2 on the surface and inside the photocatalytic structure enhanced the degradation of the pollutant. The band gap energy of the synthesized TiO2/en-MIL-101(Cr) measured by ultraviolet-visible diffuse reflection spectra showed that an insignificant shift to lower energy was situated after immobilization onto the structure of the supports. The relationship between the photocatalytic activity and the structure of TiO2/en-MIL-101(Cr) hetrostructure was discussed. The degradation efficiency of 84% and 77% of rhodamine B was respectively obtained by TiO2/en-MIL-101(Cr) under Uv and visible light, respectively. This work has introduced a new way for using the MOF in the design of photocatalyst substrate for organic dyes degradation in waste water.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"802-809"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46008288","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.002
J. Safaei‐Ghomi, R. Masoomi, M. Hosseinpour, H. Batooli
The present work displays the use of natural dyes extracted from native plants as sensitizer for fabrication of dye-sensitized solar cells (DSSCs). The native plants named as comellia sinensis, punica granatum L. var sativa k.maly, morus nigra, rubia tinctorum and brassica oleracea were collected from Kashan area, Iran. The extracted dyes were characterized with the aid of UV–Vis and Fourier transform infrared (FT-IR) spectroscopies. The FT-IR results revealed the presence of hydroxyl groups in the chemical structures of the natural dyes, improving the interaction of between photosensitizer and TiO2 surface in solar cell devices. In addition, photoelectrochemical performance of the DSSCs based on the natural dyes illustrated short-circuit photocurrent (Jsc) and open-circuit voltages (Voc) ranging from 0.5 to 2.36 mA/cm2 and 0.38 to 0.62 V, respectively. Since cyanidin- glucoside compounds were the main pigment of brassica oleracea, interaction between plenty of hydroxyl groups of these compounds and TiO2 surface was very efficient, this sensitizer owned the best photovoltaic performance among all the natural dyes.
本研究展示了从本地植物中提取的天然染料作为敏化剂用于染料敏化太阳能电池(DSSCs)的制造。产自伊朗卡尚地区的本土植物有comellia sinensis、punica granatum L. var sativa k.maly、桑、rubia tinctorum和芸苔(brassica甘蓝)。用紫外可见光谱和傅里叶变换红外光谱(FT-IR)对提取的染料进行了表征。FT-IR结果揭示了天然染料化学结构中羟基的存在，改善了光敏剂与太阳能电池器件中TiO2表面的相互作用。此外，基于天然染料的DSSCs的光电化学性能表明，短路光电流(Jsc)和开路电压(Voc)分别在0.5 ~ 2.36 mA/cm2和0.38 ~ 0.62 V之间。由于花青素-葡萄糖苷类化合物是甘蓝的主要色素，这些化合物的大量羟基与TiO2表面的相互作用非常有效，因此该敏化剂在所有天然染料中具有最好的光伏性能。
{"title":"Energy production using dye-sensitized solar cells by TiO2 nanoparticles fabricated with several natural dyes","authors":"J. Safaei‐Ghomi, R. Masoomi, M. Hosseinpour, H. Batooli","doi":"10.22052/JNS.2020.04.002","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.002","url":null,"abstract":"The present work displays the use of natural dyes extracted from native plants as sensitizer for fabrication of dye-sensitized solar cells (DSSCs). The native plants named as comellia sinensis, punica granatum L. var sativa k.maly, morus nigra, rubia tinctorum and brassica oleracea were collected from Kashan area, Iran. The extracted dyes were characterized with the aid of UV–Vis and Fourier transform infrared (FT-IR) spectroscopies. The FT-IR results revealed the presence of hydroxyl groups in the chemical structures of the natural dyes, improving the interaction of between photosensitizer and TiO2 surface in solar cell devices. In addition, photoelectrochemical performance of the DSSCs based on the natural dyes illustrated short-circuit photocurrent (Jsc) and open-circuit voltages (Voc) ranging from 0.5 to 2.36 mA/cm2 and 0.38 to 0.62 V, respectively. Since cyanidin- glucoside compounds were the main pigment of brassica oleracea, interaction between plenty of hydroxyl groups of these compounds and TiO2 surface was very efficient, this sensitizer owned the best photovoltaic performance among all the natural dyes.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"691-701"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48413128","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.005
H. S. Majdi, L. Habeeb
Graphene nanoplatelets (GNP) / Acrylonitrile butadiene rubber (NBR) nanocomposites were prepared by solutions mixing method and vulcanized effectively. GNP suspension dispersed homogenously in a well-suited solution of NBR up to 2.4 phr and characterized by X-ray Diffraction (XRD). The influence of GNP on the cross-linking of GNP/NBR nanocomposites structure has been characterized and studied by the cure characteristics and swelling tests. The results showed that the cross-linking density was enhanced to 42.3% compared to that of unfilled NBR by reducing the swelling ratio to 19.7% at 1.2 phr of the GNP. Thus, the mechanical properties were investigated and revealed that the modulus at 100% elongation (M100) improved to about 155% and the hardness to about 13%. Those results were verified via the morphology analyzing using Scanning Electron Microscopy (SEM) and the enhancement of the storage modulus as a function of temperature in the rubber nanocomposite to about 100% utilizing Dynamic Mechanical Analysis (DMA) at the same content 1.2 phr of GNP.
{"title":"Utilizing the Characteristics of Graphene Nano-Platelets to Improve the Cross-Linking Density of a Rubber Nano-Composite","authors":"H. S. Majdi, L. Habeeb","doi":"10.22052/JNS.2020.04.005","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.005","url":null,"abstract":"Graphene nanoplatelets (GNP) / Acrylonitrile butadiene rubber (NBR) nanocomposites were prepared by solutions mixing method and vulcanized effectively. GNP suspension dispersed homogenously in a well-suited solution of NBR up to 2.4 phr and characterized by X-ray Diffraction (XRD). The influence of GNP on the cross-linking of GNP/NBR nanocomposites structure has been characterized and studied by the cure characteristics and swelling tests. The results showed that the cross-linking density was enhanced to 42.3% compared to that of unfilled NBR by reducing the swelling ratio to 19.7% at 1.2 phr of the GNP. Thus, the mechanical properties were investigated and revealed that the modulus at 100% elongation (M100) improved to about 155% and the hardness to about 13%. Those results were verified via the morphology analyzing using Scanning Electron Microscopy (SEM) and the enhancement of the storage modulus as a function of temperature in the rubber nanocomposite to about 100% utilizing Dynamic Mechanical Analysis (DMA) at the same content 1.2 phr of GNP.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"723-735"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45332085","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.007
B. Bader, S. K. Muhammad, Ali M Jabbar, K. Abass, S. Chiad, N. Habubi
In this study, the doping impact of indium (In) on the actual properties of CdO at different content of (1, 2, and 3 wt% In) was discussed. The samples were prepared utilizing the spray pyrolysis method. The structural, topographical, and optical properties were characterized X-ray diffraction (XRD) analysis, UV-Vis, and atomic force microscope (AFM). The surface topography was discussed by utilizing AFM analysis. Results display that the average diameter appears to be dependent on the indium content. The particle size was decreased from 78.05 to 65.77 nm when In content was increased from 0% to 3%. It is found that the roughness of the film was decreased to 3.03 nm via increasing In content to 3%. Also, the band gap of prepared samples were studied and compared. Results revealed that the value of band gap is decreasing via doping indium. The band gap of bare CdO, 1%In-CdO, and 3%In-CdO were determined 2.63, 2.54, and 2.46 respectively.
{"title":"Synthesis and Characterization of Indium-doped CdO Nanostructured Thin Films: a Study on Optical, Morphological, and Structural Properties","authors":"B. Bader, S. K. Muhammad, Ali M Jabbar, K. Abass, S. Chiad, N. Habubi","doi":"10.22052/JNS.2020.04.007","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.007","url":null,"abstract":"In this study, the doping impact of indium (In) on the actual properties of CdO at different content of (1, 2, and 3 wt% In) was discussed. The samples were prepared utilizing the spray pyrolysis method. The structural, topographical, and optical properties were characterized X-ray diffraction (XRD) analysis, UV-Vis, and atomic force microscope (AFM). The surface topography was discussed by utilizing AFM analysis. Results display that the average diameter appears to be dependent on the indium content. The particle size was decreased from 78.05 to 65.77 nm when In content was increased from 0% to 3%. It is found that the roughness of the film was decreased to 3.03 nm via increasing In content to 3%. Also, the band gap of prepared samples were studied and compared. Results revealed that the value of band gap is decreasing via doping indium. The band gap of bare CdO, 1%In-CdO, and 3%In-CdO were determined 2.63, 2.54, and 2.46 respectively.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"744-750"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42471959","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.014
R. Ali, N. A. Al-Aaraji, E. H. Hadi, K. Abass, N. Habubi, S. Chiad
In this study, the chemical bath deposition (CBD) strategy was applied for preparation of pure and Lithium-doped copper sulfide (CuS) thin film on glass. The CuCl2.2H2O, as a copper source and thiourea as a sulfur source were used. The structural, topographical, and optical properties of products were characterized via powder X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-Vis spectroscopy. Results showed that the crystalline size is increased via Lithium doping, though the strain (%) parameter decrease from 30.39 to 27.47. Obtained results revealed that doing of lithium has a significant effect on the optical properties of prepared CuS-based thin films. The optical properties of samples was investigated through band gap calculation. The bands gap were calculated 2.4, 2.5, and 2.6 eV for CuS:3% Li, CuS:1% Li and pure CuS thin films respectively. Based on attractive properties of prepared thin films, Lithium-doped CuS thin film has potential application in optoelectronic fields.
{"title":"Effect of Lithium on Structural and Optical Properties of Nanostructured CuS Thin Films","authors":"R. Ali, N. A. Al-Aaraji, E. H. Hadi, K. Abass, N. Habubi, S. Chiad","doi":"10.22052/JNS.2020.04.014","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.014","url":null,"abstract":"In this study, the chemical bath deposition (CBD) strategy was applied for preparation of pure and Lithium-doped copper sulfide (CuS) thin film on glass. The CuCl2.2H2O, as a copper source and thiourea as a sulfur source were used. The structural, topographical, and optical properties of products were characterized via powder X-ray diffraction (XRD), atomic force microscopy (AFM), and UV-Vis spectroscopy. Results showed that the crystalline size is increased via Lithium doping, though the strain (%) parameter decrease from 30.39 to 27.47. Obtained results revealed that doing of lithium has a significant effect on the optical properties of prepared CuS-based thin films. The optical properties of samples was investigated through band gap calculation. The bands gap were calculated 2.4, 2.5, and 2.6 eV for CuS:3% Li, CuS:1% Li and pure CuS thin films respectively. Based on attractive properties of prepared thin films, Lithium-doped CuS thin film has potential application in optoelectronic fields.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"810-816"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48567618","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.011
F. Fahma, RM Muhammad Nur Fauzan, T. Sunarti, S. Sugiarto, A. Halim, Kuan-hsuan Lin, Donghao Hu, T. Enomae
The production of antimicrobial sachet from silica-alginate-nanocellulose composite beads as carrier materials with the addition of nanocellulose (0, 1, 3, 5%) as nanofiller and cinnamon essential oil (CEO) as antimicrobial agent was investigated. The nanocellulose was isolated from oil palm empty fruit bunches by mechanical treatment using a combination of ultrafine grinding and ultrasonication. The produced composite beads were observed by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and x-ray diffraction (XRD) analysis. The produced composite beads with 5% nanocellulose (BDCN5) was more compact and spherical than others. Meanwhile, the produced antimicrobial sachets were performed with release characteristic and antimicrobial tests. The antimicrobial sachet with the addition of nanocellulose showed the cinnamon essential oil was significantly released from beads for 60 min and had a high inhibitory effect. Almost all microorganisms tested by BDCN5 showed a high inhibitory effect, 5.43% for inhibiting Escherichia coli, 5.19% for Salmonella sp, 3.36% for Aspergillus sp, and 8.72% for Staphylococcus aureus.
{"title":"Production of silica-alginate-nanocellulose composite beads with cinnamon essential oil for antimicrobial sachet","authors":"F. Fahma, RM Muhammad Nur Fauzan, T. Sunarti, S. Sugiarto, A. Halim, Kuan-hsuan Lin, Donghao Hu, T. Enomae","doi":"10.22052/JNS.2020.04.011","DOIUrl":"https://doi.org/10.22052/JNS.2020.04.011","url":null,"abstract":"The production of antimicrobial sachet from silica-alginate-nanocellulose composite beads as carrier materials with the addition of nanocellulose (0, 1, 3, 5%) as nanofiller and cinnamon essential oil (CEO) as antimicrobial agent was investigated. The nanocellulose was isolated from oil palm empty fruit bunches by mechanical treatment using a combination of ultrafine grinding and ultrasonication. The produced composite beads were observed by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and x-ray diffraction (XRD) analysis. The produced composite beads with 5% nanocellulose (BDCN5) was more compact and spherical than others. Meanwhile, the produced antimicrobial sachets were performed with release characteristic and antimicrobial tests. The antimicrobial sachet with the addition of nanocellulose showed the cinnamon essential oil was significantly released from beads for 60 min and had a high inhibitory effect. Almost all microorganisms tested by BDCN5 showed a high inhibitory effect, 5.43% for inhibiting Escherichia coli, 5.19% for Salmonella sp, 3.36% for Aspergillus sp, and 8.72% for Staphylococcus aureus.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"779-792"},"PeriodicalIF":1.4,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44087405","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}
Pub Date : 2020-10-01DOI: 10.22052/JNS.2020.04.018
A. Goel, Sudha Tomar, S. Tomar
The present work is mainly focused on the synthesis and characterization of surfactant-assisted Ir-Sn BMNP (bimetallic nanoparticles) using modified polyol method. CTAB (Cetyltrimethylammonium bromide), TSC (Trisodium citrate), and TX-100 (Triton X-100) as cationic, anionic, and nonionic surfactant respectively are used to study their effect on the particle size, morphology, and their stability. The synthesized particles are characterized by XRD, FE-SEM, EDAX, elemental mapping, TEM, HR-TEM, XPS and FT-IR, TGA, DTG, and DTA techniques. UV-Vis spectroscopy is used to monitor the synthesis of nanoparticles. The XRD patterns of all samples confirm that Ir-Sn BMNP are amorphous in nature. The influence of surfactant on the morphology and particle size of Ir-Sn BMNP samples was examined by the FE-SEM technique. The FE-SEM figures demonstrate that the particles of bimetal are in nano size, highly dispersed, and pseudo spherical in shape with smooth surfaces. The approximate crystallite (particle/grain) size of CTAB, TSC, and TX-100 assisted samples are ~1.39 nm (39 nm), ~2.2 nm (59 nm), and ~5.79 nm (89 nm) respectively, which are estimated from TEM and FE-SEM images. The presence and distribution of Ir and Sn elements in the BMNP is determined through EDAX and elemental mapping respectively. These techniques show that CTAB assisted Ir-Sn BMNP sample is in alloy form but TSC and TX-100 samples are in core-shell form, where the Ir core is surrounded by Sn shell. The XPS confirms the metallic state (Ir0), and the dual valence state of Sn (Sn2+ and Sn4+) is in the Sn 3d core level.
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