International Journal of Nanoparticles and Nanotechnology最新文献

{"title":"Physicochemical Characteristics of Nanocomposites under Environmental Exposure Conditions for Space Applications","authors":"S. Joo, Robert S Arnold, Cecilia Luciano, W. W. Benedict, Tyra Collins, Yordany C Guerra, K. Luongo","doi":"10.35840/2631-5084/5525","DOIUrl":"https://doi.org/10.35840/2631-5084/5525","url":null,"abstract":"Despite well-perceived advancements of nanotechnology for space applications, application of nanotechnology in the aerospace industry has potential challenges in the perspectives of monitoring and accurately measuring types and levels of pollution. Nanomaterials applied for chemical nanosensors should be well characterized and designed to detect contaminant levels different from Earth’s. However, a few studies have investigated the transformation and efficacy of aged nanomaterials in sensor development. The present study explored the aging effect of oxygenation, UV irradiation, and heat treatment on selected nanomaterials (i.e., GO, CNTs, ZnO nanowire, TiO2, and ZnO) in the perspective of sensing performance to detect trace contaminants. Further, GO-CNT nanocomposite thin films deposited on electrode chips were exposed to the CO2 gas contaminant, and their electrical resistance was measured. Results indicate significant changes in physicochemical properties (particle size, zeta potential, and absorbance) of the model nanomaterials under oxygenation and UV irradiation, which was further investigated on their electric resistance upon exposure to gaseous contaminants. The assessment of changes to the CO2-sensing ability of carbon-nanotube or graphene-oxide hybrid thin films suggests decreasing sensitivity under both UV irradiation and oxygenation.","PeriodicalId":408729,"journal":{"name":"International Journal of Nanoparticles and Nanotechnology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129893919","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":"Preparation, Characterization and Evaluation of Some Acrylate Polymers Nanoparticles as Binder to Improving the Physical Properties of Water Based Paints","authors":"H. A. El‐Wahab, M. Attia, W. Hassan, A. Nasser","doi":"10.35840/2631-5084/5522","DOIUrl":"https://doi.org/10.35840/2631-5084/5522","url":null,"abstract":"","PeriodicalId":408729,"journal":{"name":"International Journal of Nanoparticles and Nanotechnology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121949944","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":"Enhancement of Fracture for Low-Permeability Reservoir while Drilling using Smart Fluid throughout Experimental Work","authors":"Noah Ahmed Z, Kabel Khalid I, Gazar Ahmed","doi":"10.35840/2631-5084/5517","DOIUrl":"https://doi.org/10.35840/2631-5084/5517","url":null,"abstract":"Nano-fluids show potential use in applications related to upstream oil and gas industry to improve the performance of several processes such as exploration, drilling and completion, production and enhanced oil recovery operations. However, their applications for Water-Based Drilling Mud (WBM) needs attention to address efficient drilling in a High Pyllressure and High Temperature (HPHT) environment. In the present work, Nano-Fluid-Enhanced WBM (NWBM) are prepared using the Nano-fluids of CuO and ZnO (size ˂50 nm) in a xanthan gum aqueous solution as a base fluid, and used as an additive in WBM. The Nano-fluids are prepared for Nano-particle concentrations of 0.1, 0.3 and 0.5 % of wt. in base. The prepared Nanofluids are added as an additive of 1.0% (by volume) to WBM. The enhancement in thermal and electrical properties of NWBH is studied. It is observed that NWBM show improved thermal and electrical properties by about 35.0% compared to WBM. An increased concentration of nanoparticles further enhances electrical and thermal properties of drilling fluids. The NWBM based on CuO Nano-fluid are observed to show improved thermal properties, and are more resistant to HPHT condition than ZnObased NWBM. High pressure rheological studies are conducted on NWBM to understand the effect of Nano-fluids on the rheological properties at varying temperatures (25, 70, 90 and 110 0C) and pressures (0.1 MPa and 10 MPa). The effect of pressure on the rheology of NWBM is more significant at higher temperatures, and indicates that the better rheological stability in case of NWBM. The most significant role that the Nano-fluids play is in-stabilizing the viscosity at higher temperatures. The experimental data on flow curves obtained for various NWBM are fitting to the classical drilling fluid rheological models (Power Law model, Bingham Plastic model and Herschel-Bulkley model). The Herschel Bulkley model is observed to be the best fitmodel for rheological behavior of NWBM and can be applied for efficient NWBM design.","PeriodicalId":408729,"journal":{"name":"International Journal of Nanoparticles and Nanotechnology","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126458766","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}