Journal of Applied Sciences and Nanotechnology最新文献_第3页

An Alternative Method for Estimating the Phase Fraction of Multiphase Nanomaterials: Analysis from X-ray Diffraction 估计多相纳米材料相分数的另一种方法:x射线衍射分析

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-09-01 DOI: 10.53293/jasn.2023.7002.1222

Peverga Jubu, Khaled Chahrour, Yushamdan Yusof, A. Nathan-Abutu, V. Igba, E. Danladi, O. Obaseki, M. Ochang, W. Zhiya, F. Yam

{"title":"An Alternative Method for Estimating the Phase Fraction of Multiphase Nanomaterials: Analysis from X-ray Diffraction","authors":"Peverga Jubu, Khaled Chahrour, Yushamdan Yusof, A. Nathan-Abutu, V. Igba, E. Danladi, O. Obaseki, M. Ochang, W. Zhiya, F. Yam","doi":"10.53293/jasn.2023.7002.1222","DOIUrl":"https://doi.org/10.53293/jasn.2023.7002.1222","url":null,"abstract":"The presence of multiple phases/ components within a nanocomposite material impacts the properties of a nanomaterial. Therefore, there is a need to estimate the phase fraction of each component present in a sample. Spurr-Myers proposed a valuable formula for estimating the rutile and anatase phase fraction of a TiO 2 sample from X-ray diffraction. However, this formula is dedicated to TiO 2 and is inapplicable to samples that contains more than two phases. The present research work proposed a simple method for quantifying the phase fraction of all types of nanomaterials that consist of two or more phases. Precision/ accuracy test carried out by multiplying the grand total intensity of all the diffraction peaks present in a sample with the value of the phase fraction of individual components showed that the proposed method gave precision values that were equivalent to the sum of the intensity of the peaks of each component. Whereas the S-M gave precision values that were significantly inconsistent with the sum of the intensity of the peaks of each component. The study showed that the proposed method was valid for a wide range of 2 𝜃 values and can be deployed to obtain reasonable and reliable values of phase fraction that could assist to understand the material phase fraction-properties relationship.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135249515","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

Effect of Laser Energies on the Performance of Exfoliation and Fragmentation for Hexagonal Boron Nitride by Laser 激光能量对六方氮化硼激光剥落破碎性能的影响

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-09-01 DOI: 10.53293/jasn.2023.6955.1214

Mayyadah Mohsin, Khawla Khashan, Ghassan Sulaiman, Khalil Khalil

{"title":"Effect of Laser Energies on the Performance of Exfoliation and Fragmentation for Hexagonal Boron Nitride by Laser","authors":"Mayyadah Mohsin, Khawla Khashan, Ghassan Sulaiman, Khalil Khalil","doi":"10.53293/jasn.2023.6955.1214","DOIUrl":"https://doi.org/10.53293/jasn.2023.6955.1214","url":null,"abstract":"A technique for exfoliating Boron nitride (BN) nanosheets was devised, which was then followed by a laser ablation-fragmentation process to produce lamellar hexagonal Boron nitride nanostructures (h-BNNs). The physicochemical properties of the nanoparticles were analyzed to investigate the effect of laser energy and wavelength in the two-step pre-treatment procedure during BN synthesis. The X-ray diffraction (XRD) patterns showed no impurity phase structures and only primary h-BN reflections were visible. It was discovered that the crystallite h-BNNs size ranged from 11 to 18 nm, and nanosecond laser energy was sufficient to transform BN into h-BNNs and a few nanotubes. Combining laser intensity and wavelength transformed the BN nanoparticle shape from haphazardly arranged platelets to melting-like formations. Fourier Transform infrared (FTIR) spectroscopy confirmed distinct observed changes in the size and melting behavior in the h-BNNs and the sharp absorption peaks which could indicate changes in their optical properties. Morphological characteristics and formation of the hexagonal phase of BN caused variations in optical properties and high-resolution transmission electron microscopy (HRTEM) results. Photoluminescence of h-BNNs was observed in the 250–600 nm range with peak emission at 485 nm. Due to its significant structural disorder, the h-BNNs exhibited a wide emission with a strong luminescence that remained largely continuous after 48 hours, resulting in a distinctive blue hue (470, and 485nm).","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135200308","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

Study of the Physico-Chemical Properties of Sol-Gel (Er, Yb) Doped TiO2 Nanoparticles Prepared with a Novel Protocol 新工艺制备溶胶-凝胶(Er, Yb)掺杂TiO2纳米颗粒的理化性质研究

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.6799.1208

I. Benammar, R. Salhi, J. Deschanvres, R. Maalej

{"title":"Study of the Physico-Chemical Properties of Sol-Gel (Er, Yb) Doped TiO2 Nanoparticles Prepared with a Novel Protocol","authors":"I. Benammar, R. Salhi, J. Deschanvres, R. Maalej","doi":"10.53293/jasn.2023.6799.1208","DOIUrl":"https://doi.org/10.53293/jasn.2023.6799.1208","url":null,"abstract":"This paper describes the systematic preparation of doped and undoped TiO 2 with Er and/or Yb nanoparticles by hydrothermal-assisted sol-gel method using supercritical drying of ethanol followed by systematic calcination steps at 500°C, 800°C and 1000°C for 2/h. The structural study of these powders with XRD reveals that our samples are crystalline with a tetragonal structure and anatase phase, which is well crystallized at 500°C. The annealing at 800°C reveals a transformation of the anatase phase to the rutile phase, which is well crystallized at 1000°C. The XRD analysis clearly indicates that the dopants are incorporated into the TiO 2 network without any phase segregation-taking place in these nanoparticles. The study of the grain sizes has shown that they are nanometric in size of around 8-12 nm and that their sizes decrease with Er and/or Yb doping. The elemental analyses with micro-EDX using SEM confirmed the presence of chemical elements of TiO 2 nanoparticles with expected atomic ratios. The analysis of the SEM images confirmed the XRD observations. In addition, they attest that the nanoparticles are spherical in shape. The optical analysis with excitation at 488 nm shows the presence of three emission bands in the green zone and the red zone. The heat treatment improves the optical, structural and spectroscopic properties and eliminates the contaminations that are due to the preparation conditions.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"142 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78202529","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: 1

A New Technique for Measuring Laser Pulse Energy Using PZT/SiO2 利用PZT/SiO2测量激光脉冲能量的新技术

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.6122.1197

M. Abud, M. Azzawi, H. Alnaqeeb

引用次数: 0

Effect of Reinforcing PMMA Denture Base Material by Stainless Steel 316L Wires on Flexural Strength 316L不锈钢丝增强PMMA义齿基托材料对抗弯强度的影响

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2022.5487.1189

S. Ibrahim, Sadeq H. Lafta, Wafaa A. Hussain

{"title":"Effect of Reinforcing PMMA Denture Base Material by Stainless Steel 316L Wires on Flexural Strength","authors":"S. Ibrahim, Sadeq H. Lafta, Wafaa A. Hussain","doi":"10.53293/jasn.2022.5487.1189","DOIUrl":"https://doi.org/10.53293/jasn.2022.5487.1189","url":null,"abstract":"A stainless steel 316L (SS316L) wires reinforcing heat cure PMMA matrix samples were prepared for dentures applications. Mechanical scratching and electrochemical anodizing for PMMA denture base supported by wires of SS316L were used as straightforward and low-cost outside layer pretreatments. The two pretreatments were used to improve the flexural strength of PMMA denture bases. The mechanical scratching process acts to scratch the surface of stainless-steel wires by mixing the wires with silicon carbide powder inside a rotating Pyrex container. The pretreatment time was varied to be 60, 90, and 120min. The anodizing solution, containing ethylene glycol (EG) with HClO 4 acid, was used with a 15V supply and a graphite rod as a cathode in the anodizing process. A variation in the pretreating time to be 15, 20, and 30min for the electrochemical anodizing process was included. A scanning electron microscope was utilized to examine the morphology of surfaces of the SS316L wires, which showed various morphology natures. The mechanical flexural strength test was conducted for all samples statistically to check the results. The flexural strength test results of the composite sample groups of PMMA reinforced with the scratched surface for 90 min stainless steel wire 316L presented the highest flexural strength value (113 MPa) with a 66% increment. All results proved that reinforcing PMMA by ss 316L are","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"130 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76409830","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: 1

The Effect of Solvent Variation on Structural, Optical, and Electrical Properties of TiO2 Films Prepared by Hydrothermal Method 溶剂变化对水热法制备TiO2薄膜结构、光学和电性能的影响

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.5562.1191

A. Jasim, O. Salman

{"title":"The Effect of Solvent Variation on Structural, Optical, and Electrical Properties of TiO2 Films Prepared by Hydrothermal Method","authors":"A. Jasim, O. Salman","doi":"10.53293/jasn.2023.5562.1191","DOIUrl":"https://doi.org/10.53293/jasn.2023.5562.1191","url":null,"abstract":"In this work, we reported a study on the hydrothermal process used to create TiO 2 NRs films on FTO substrate utilizing two various solutions, the first one is composed of (ethanol, and titanium butoxide) while the second is composed of (HCl, DIW, and titanium butoxide). The study on the structural, morphological, optical, and electrical properties helped to identify the characteristics of the TiO2 film which were prepared by using different solvents, the first sample (TO1) presented anatase -phase crystal structure with (3.2 eV) energy gap while the second (TO2) presented a Rutile phase with (3 eV) energy gap. The (nanorod) morphology was observed for the (TO2) sample while irregular grains were found for the (TO1) sample. Transmittance measurements have been used to investigate the optical properties, which revealed that both samples were transparent in the visible wavelength range, and absorption coefficients were higher for sample (TO2) with a rutile phase. The activation energy was (0.0226) eV and (0.0643) eV for both samples (TO1) and (TO2), respectively. The n-type conductivity was confirmed by Hall Effect measurement for both samples. The highest conductivity (300.655) (Ω -1 .cm -1 ) and carrier consternation (1.07355 ×10 17 ) (cm -3 ) were attained from sample (TO1","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"22 14_suppl 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88159266","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

Microstructure Investigation of Activated Carbon Prepared from Potato Peel 马铃薯皮制备活性炭的微观结构研究

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.5760.1196

A. Jasim, N. Ali

{"title":"Microstructure Investigation of Activated Carbon Prepared from Potato Peel","authors":"A. Jasim, N. Ali","doi":"10.53293/jasn.2023.5760.1196","DOIUrl":"https://doi.org/10.53293/jasn.2023.5760.1196","url":null,"abstract":"This research investigates how activated carbon (AC) was synthesized from potato peel waste (PPW). Different ACs were synthesized under the atmosphere's conditions during carbonation via two activation methods: first, chemical activation, and second, carbon dioxide-physical activation. The influence of the drying period on the preparation of the precursor and the methods of activation were investigated. The specific surface area and pore volume of the activated carbon were estimated using the Brunauer–Emmett–Teller method. The AC produced using physical activation had a surface area as high as 1210 m 2 /g with a pore volume of 0.37 cm 3 /g, whereas the chemical activation had a surface area of 1210 m 2 /g with a pore volume of 0.34 cm3/g. The main aim of this research is to produce activated carbon from natural materials and to prepare and characterize the elemental analysis, surface area, and morphological properties of ACs from potato peel waste using potassium hydroxide (KOH) AC-PPK and Carbon dioxide (CO 2 ) AC-PPC as activating agents. X-ray diffraction analysis showed the degree of crystallinity to be 35.03% in the case of AC-PPK, and AC-PPC showed a crystallinity of 35.46%. In both methods, the results showed that the crystallographic structure revealed that all the synthesized AC took on an amorphous state with low crystallinity. The atomic force microscopy (AFM) image of AC shows the presence of nanotips on the surface and shows that the maximum height was 1396 nm and 778 nm. The outer surfaces are full of cavities and highly irregular as a result of activation. The morphological analysis of the precursors was determined by scanning electron microscopy. The external surfaces are full of cavities and quite irregular as a result of activation. Also, activated carbon prepared from potato peel waste is a low-cost and effective adsorbent when compared with several activated carbon sources.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80484088","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

Photoluminescence of Solid Solutions Gas1-xsеx0.1аt% (x=0.10) Irradiated with ץ-Quanta gas1 - xsnovelx0.1 % (x=0.10)的光致发光

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.6700.1206

G. Imanova, T. Taghiyev

引用次数: 0

Preparation and Characterization of Bi2MO6 (M = Mo, W) for Antibacterial Activity Bi2MO6 (M = Mo, W)抗菌活性的制备及表征

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2022.5250.1179

H. Abid, Amar Al-keisy, D. Ahmed, Sangeeta Singh

{"title":"Preparation and Characterization of Bi2MO6 (M = Mo, W) for Antibacterial Activity","authors":"H. Abid, Amar Al-keisy, D. Ahmed, Sangeeta Singh","doi":"10.53293/jasn.2022.5250.1179","DOIUrl":"https://doi.org/10.53293/jasn.2022.5250.1179","url":null,"abstract":"In recent years, Bi-based photocatalysts have begun to be applied in biological applications. However, the antibacterial ability of a Bi-based photocatalyst is still unclear. In this study, Bi 2 MoO 6 and Bi 2 WO 6 were successfully synthesized by a hydrothermal approach. The fabricated samples were characterized by X-Ray diffraction, FESEM, and UV-Vis spectra. Besides, the antibacterial activity of both photocatalyst samples toward E. coli as negative and S. aureus as positive pathogens were studied. Compared with antibacterial of Bi2WO6, the resultant Bi 2 MoO 6 exhibited high susceptible S. aureus bacterial strain revealing large zones of 24 mm to 29 mm, while Bi 2 WO 6 exhibited less susceptible of 17.5 mm to 21.5 mm as compared with the zone of inhibition against tested bacterial E. coli . Besides, a possible mechanism suggested the effect of nanosheet structure of samples to penetrate the cell membrane which results in leakage of interior cell and complete death and these results will provide some support for the applications of Bi 2 MoO 6 and Bi 2 WO 6 in antibacterial materials under common environments.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74203861","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: 1

The Effect of BIS Usage on Anaesthetic Agents Consumption in High-risk Patients for Coronary Artery-bypass Grafting Off-pump Surgery BIS使用对高危冠状动脉旁路移植术患者麻醉药物消耗的影响

Journal of Applied Sciences and Nanotechnology Pub Date : 2023-06-01 DOI: 10.53293/jasn.2023.5075.1174

Sanjeev Singh, Arti Singh, Pavagada Shaifulla

{"title":"The Effect of BIS Usage on Anaesthetic Agents Consumption in High-risk Patients for Coronary Artery-bypass Grafting Off-pump Surgery","authors":"Sanjeev Singh, Arti Singh, Pavagada Shaifulla","doi":"10.53293/jasn.2023.5075.1174","DOIUrl":"https://doi.org/10.53293/jasn.2023.5075.1174","url":null,"abstract":"This study aimed to compare whether Bispectral Index (BIS) reduces the consumption of the anaesthetic drug and improves recovery time in coronary artery-bypass grafting off-pump (CABG-OP) surgery without awareness during surgery (ADS). The study was a single centre, prospective, randomised, and double-blind comparative research on ASA 3 patients booked for elective CABG-OP operation under general anaesthesia (GA). Patients received either propofol or isoflurane anaesthesia, and their consumption was calculated and compared. The conventional groups CPG-1 and CIG-3 received propofol and isoflurane, and haemodynamic parameters (± 20% of initial values) were considered for anaesthesia. The groups BPG-2 and BIG-4 received propofol and isoflurane, and BIS (value 50±5) was used to maintain anaesthesia. In addition, haemodynamic parameters, awakening conditions, length of intubation, hospital stay and drug utilisation were recorded. To explicit ADS, patients were interviewed 24 hours after extubation. The quantity of propofol used was 178 ± 11 ml in CPG-1 and 117 ± 6 ml in BPG-2, with a 34.26% reduction with BIS. The isoflurane used was 39 ± 8 ml in CIG-3 and 25± 6ml in BIG-4, with a 35.89% reduction in isoflurane requirement. This difference was statistically significantly low with BIS monitored anaesthesia compared to conventional anaesthesia. The length of intubation was 2.2 ±1.27 and 2.3 ±1.49 hours in groups BPG-2 and BIG-4, respectively (p<0.05). BIS assisted CABG-OP surgeries with adequate depth of anaesthesia (BIS 50 ± 5) prevent ADS, reduce the anaesthetic agent requirement, and aid ultra‐fast‐track (UFT) extubation.","PeriodicalId":15241,"journal":{"name":"Journal of Applied Sciences and Nanotechnology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136027389","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