Pub Date : 2022-04-26DOI: 10.1080/20550324.2022.2066827
Congcong Sun, Hongxin Zhi, Han Li, Jingchao Li, K. Shao, Ya-xin Lin, Yujie Fu, Zhiguo Liu
Abstract In order to improve the antimicrobial activity of Ag nanomaterial and minimum their toxicity, cinnamic acid has been utilized as both reducing agent and protecting ligand to synthesis of silver (Ag) nanoparticles (NPs). The synthesized cinnamic acid (CA) functionalized Ag nanoparticles (CA-AgNPs) have been characterized by Ultraviolet-visible spectrophotometry (UV), Fourier transform infrared absorption spectra (FTIR), Atomic force microscope (AFM), Transmission electron microscope (TEM). UV absorption results indicated that a strong absorption band peaked at 452 nm which can be ascribed to the surface plasmon resonance (SPR) of AgNPs. FTIR results of CA-AgNPs indicated that cinnamic acid was indeed bound on the AgNPs. TEM measurements indicated that the products are round spherical NPs with the average particle size of 52.8 nm. Antimicrobial activity tests revealed that CA-AgNPs have significant inhibitory effects on E. coli and C. albicans. The CA-AgNPs prepared in this study are expected to be developed as efficient antimicrobial agents. Graphical Abstract
{"title":"Synthesis, characterization and antimicrobial study of cinnamic acid functionalized Ag nanoparticles","authors":"Congcong Sun, Hongxin Zhi, Han Li, Jingchao Li, K. Shao, Ya-xin Lin, Yujie Fu, Zhiguo Liu","doi":"10.1080/20550324.2022.2066827","DOIUrl":"https://doi.org/10.1080/20550324.2022.2066827","url":null,"abstract":"Abstract In order to improve the antimicrobial activity of Ag nanomaterial and minimum their toxicity, cinnamic acid has been utilized as both reducing agent and protecting ligand to synthesis of silver (Ag) nanoparticles (NPs). The synthesized cinnamic acid (CA) functionalized Ag nanoparticles (CA-AgNPs) have been characterized by Ultraviolet-visible spectrophotometry (UV), Fourier transform infrared absorption spectra (FTIR), Atomic force microscope (AFM), Transmission electron microscope (TEM). UV absorption results indicated that a strong absorption band peaked at 452 nm which can be ascribed to the surface plasmon resonance (SPR) of AgNPs. FTIR results of CA-AgNPs indicated that cinnamic acid was indeed bound on the AgNPs. TEM measurements indicated that the products are round spherical NPs with the average particle size of 52.8 nm. Antimicrobial activity tests revealed that CA-AgNPs have significant inhibitory effects on E. coli and C. albicans. The CA-AgNPs prepared in this study are expected to be developed as efficient antimicrobial agents. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"53 1","pages":"95 - 101"},"PeriodicalIF":4.6,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90299271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-18DOI: 10.1080/20550324.2022.2054210
M. Handayani, Bagus Indra Suwaji, Geolita Ihsantia Ning Asih, T. Kusumaningsih, Y. Kusumastuti, Rochmadi, I. Anshori
Abstract Graphene has excellent properties which can be a promising material as nanocomposites for application in a drug delivery system (DDS). In this study, reduced graphene oxide/silver nanoparticles (rGO/AgNPs) nanocomposites was synthesized using a facile in-situ method for drug loading application of acetylsalicylic acid (ASA). The synthesis results were characterized by FESEM, EDX, UV-Vis, XRD, and Raman spectrophotometers analyses. The results showed that rGO/AgNPs nanocomposites was synthesized successfully. Drug loading application was performed using UV-Vis measurements. The loading results depicted that rGO/AgNPs is successfully created in high-capacity loading for ASA. Drug loading performances enhanced with the increasing loading time of ASA on rGO/AgNPs. The optimum percentage of drug loading capacity for ASA by rGO/AgNPs was ∼83% in a contact time of 30 hrs. Graphical Abstract
{"title":"In-situ synthesis of reduced graphene oxide/silver nanoparticles (rGO/AgNPs) nanocomposites for high loading capacity of acetylsalicylic acid","authors":"M. Handayani, Bagus Indra Suwaji, Geolita Ihsantia Ning Asih, T. Kusumaningsih, Y. Kusumastuti, Rochmadi, I. Anshori","doi":"10.1080/20550324.2022.2054210","DOIUrl":"https://doi.org/10.1080/20550324.2022.2054210","url":null,"abstract":"Abstract Graphene has excellent properties which can be a promising material as nanocomposites for application in a drug delivery system (DDS). In this study, reduced graphene oxide/silver nanoparticles (rGO/AgNPs) nanocomposites was synthesized using a facile in-situ method for drug loading application of acetylsalicylic acid (ASA). The synthesis results were characterized by FESEM, EDX, UV-Vis, XRD, and Raman spectrophotometers analyses. The results showed that rGO/AgNPs nanocomposites was synthesized successfully. Drug loading application was performed using UV-Vis measurements. The loading results depicted that rGO/AgNPs is successfully created in high-capacity loading for ASA. Drug loading performances enhanced with the increasing loading time of ASA on rGO/AgNPs. The optimum percentage of drug loading capacity for ASA by rGO/AgNPs was ∼83% in a contact time of 30 hrs. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"93 1","pages":"74 - 80"},"PeriodicalIF":4.6,"publicationDate":"2022-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81704039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-11DOI: 10.1080/20550324.2022.2057661
Rongyan Wen, Zhihao Gao, Lin Luo, X. Cui, Jie Tang, Zongmin Zheng, Jianmin Zhang
Abstract High safety and rate capability of lithium-ion batteries (LIBs) remain challenging. In this study, sandwich-structured poly(vinylidene fluoride)/poly(vinylidene fluoride-co-hexafluoropropylene)/poly(vinylidene fluoride) (PVDF/PVDF-HFP/PVDF) membranes with thermal shut-down function were successfully prepared through electrospinning. The effects of different weight ratios of PVDF and PVDF-HFP in a composite membrane on the physical and electrochemical properties of the membrane were explored. It was found that the composite membrane with 36 wt% PVDF-HFP (P/H2/P) showed excellent electrolyte absorption (367%) and ionic conductivity (2.5 × 10−3 S/cm). Half-cell with P/H2/P as separator exhibited higher discharge capacity and better cycle performance than commercial PP membrane. More importantly, thermally stable high melting-temperature PVDF was chosen as outer layer, while low melting-temperature PVDF-HFP was used as inner layer. Self-shutdown function of this separator was achieved when heated at 140 °C, providing a safety measure for LIBs. These results indicate that PVDF/PVDF-HFP/PVDF composite membrane is a promising separator candidate in high performance LIBs applications. Graphical Abstract
{"title":"Sandwich-structured electrospun all-fluoropolymer membranes with thermal shut-down function and enhanced electrochemical performance","authors":"Rongyan Wen, Zhihao Gao, Lin Luo, X. Cui, Jie Tang, Zongmin Zheng, Jianmin Zhang","doi":"10.1080/20550324.2022.2057661","DOIUrl":"https://doi.org/10.1080/20550324.2022.2057661","url":null,"abstract":"Abstract High safety and rate capability of lithium-ion batteries (LIBs) remain challenging. In this study, sandwich-structured poly(vinylidene fluoride)/poly(vinylidene fluoride-co-hexafluoropropylene)/poly(vinylidene fluoride) (PVDF/PVDF-HFP/PVDF) membranes with thermal shut-down function were successfully prepared through electrospinning. The effects of different weight ratios of PVDF and PVDF-HFP in a composite membrane on the physical and electrochemical properties of the membrane were explored. It was found that the composite membrane with 36 wt% PVDF-HFP (P/H2/P) showed excellent electrolyte absorption (367%) and ionic conductivity (2.5 × 10−3 S/cm). Half-cell with P/H2/P as separator exhibited higher discharge capacity and better cycle performance than commercial PP membrane. More importantly, thermally stable high melting-temperature PVDF was chosen as outer layer, while low melting-temperature PVDF-HFP was used as inner layer. Self-shutdown function of this separator was achieved when heated at 140 °C, providing a safety measure for LIBs. These results indicate that PVDF/PVDF-HFP/PVDF composite membrane is a promising separator candidate in high performance LIBs applications. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"34 1","pages":"64 - 73"},"PeriodicalIF":4.6,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82366606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-11DOI: 10.1080/20550324.2022.2054209
S. Alqarni
Abstract In recent times, great attention has been given to developing extremely competent adsorbents for removing organic dyes from wastewater. Thus, to enhance their adsorption capability, a general strategy based on adsorbent surface modification with polymers has been proposed. This report demonstrates the potential of a ternary mixture of polythiophene/zinc oxide/multiwalled carbon nanotubes (PTh/ZnO/MWCNTs) and tertiary PTh/ZnO/oxidized multiwalled carbon nanotubes (ox-MWCNTs), which have been incorporated via an in-situ method of chemical polymerization through a simplistic two-way method. SEM and EDX outcomes show that ZnO and MWCNTs, or ox-MWCNTs, are well covered with PTh. Raman, FTIR, and XRD demonstrated the effective synthesis of PTh/ZnO/ox-MWCNTs and PTh/ZnO/MWCNTs nanocomposites with good interfacial interactions between the components. This report also examined the potential of these nanocomposites to remove brilliant green (B.G.) (a toxic dye) from a water solution. In addition, the influence of adsorption parameters, such as concentration, adsorption temperature, pH, and stirring time, was evaluated. B.G.’s adsorption percentage was affected by concentration, temperature, and time. B.G.’s maximum adsorption potential was 9.1 mg g −1 for PTh/ZnO/ox-MWCNTs and 8.3 mg g −1 for PTh/ZnO/MWCNTs, demonstrating the nanocomposites’ (NCs) potential for effective B.G. adsorption. The outcomes of the dye removal show that the dye removal process was spontaneous and endothermic, as evaluated by thermodynamic and kinetic criteria. Graphical Abstract
{"title":"Deliberated system of ternary core–shell polythiophene/ZnO/MWCNTs and polythiophene/ZnO/ox-MWCNTs nanocomposites for brilliant green dye removal from aqueous solutions","authors":"S. Alqarni","doi":"10.1080/20550324.2022.2054209","DOIUrl":"https://doi.org/10.1080/20550324.2022.2054209","url":null,"abstract":"Abstract In recent times, great attention has been given to developing extremely competent adsorbents for removing organic dyes from wastewater. Thus, to enhance their adsorption capability, a general strategy based on adsorbent surface modification with polymers has been proposed. This report demonstrates the potential of a ternary mixture of polythiophene/zinc oxide/multiwalled carbon nanotubes (PTh/ZnO/MWCNTs) and tertiary PTh/ZnO/oxidized multiwalled carbon nanotubes (ox-MWCNTs), which have been incorporated via an in-situ method of chemical polymerization through a simplistic two-way method. SEM and EDX outcomes show that ZnO and MWCNTs, or ox-MWCNTs, are well covered with PTh. Raman, FTIR, and XRD demonstrated the effective synthesis of PTh/ZnO/ox-MWCNTs and PTh/ZnO/MWCNTs nanocomposites with good interfacial interactions between the components. This report also examined the potential of these nanocomposites to remove brilliant green (B.G.) (a toxic dye) from a water solution. In addition, the influence of adsorption parameters, such as concentration, adsorption temperature, pH, and stirring time, was evaluated. B.G.’s adsorption percentage was affected by concentration, temperature, and time. B.G.’s maximum adsorption potential was 9.1 mg g −1 for PTh/ZnO/ox-MWCNTs and 8.3 mg g −1 for PTh/ZnO/MWCNTs, demonstrating the nanocomposites’ (NCs) potential for effective B.G. adsorption. The outcomes of the dye removal show that the dye removal process was spontaneous and endothermic, as evaluated by thermodynamic and kinetic criteria. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"23 1","pages":"47 - 63"},"PeriodicalIF":4.6,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81372809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-28DOI: 10.1080/20550324.2022.2055375
Sasiporn Audtarat, P. Hongsachart, T. Dasri, Sirinart Chio-Srichan, S. Soontaranon, W. Wongsinlatam, S. Sompech
Abstract Composite materials used in biomedical applications based on bacterial cellulose (BC) have attracted considerable scientific interest due to their specific and excellent properties. This work reports the fabrication of silver nanoparticles (AgNPs) deposited on nanofibrillated BC (BC-AgNPs nanocomposite) for antimicrobial applications. BC, AgNPs, as well as BC-AgNPs nanocomposite formation were fully characterized using various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) analyses, Fourier transform infrared (FTIR) spectoscopy, transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). Furthermore, the antimicrobial effects of produced BC-AgNP composites were evaluated on two pathogenic microorganisms, a gram-negative (Escherichia coli) and a gram-positive (Staphylococcus aureus) by determining their minimum inhibitory concentrations (MIC), and minimum bactericidal concentrations (MBC) using an agar diffusion assay. The results show that the BC-AgNPs composite has good antimicrobial activity against Escherichia coli but less against Staphylococcus aureus. Graphical Abstract
{"title":"Green synthesis of silver nanoparticles loaded into bacterial cellulose for antimicrobial application","authors":"Sasiporn Audtarat, P. Hongsachart, T. Dasri, Sirinart Chio-Srichan, S. Soontaranon, W. Wongsinlatam, S. Sompech","doi":"10.1080/20550324.2022.2055375","DOIUrl":"https://doi.org/10.1080/20550324.2022.2055375","url":null,"abstract":"Abstract Composite materials used in biomedical applications based on bacterial cellulose (BC) have attracted considerable scientific interest due to their specific and excellent properties. This work reports the fabrication of silver nanoparticles (AgNPs) deposited on nanofibrillated BC (BC-AgNPs nanocomposite) for antimicrobial applications. BC, AgNPs, as well as BC-AgNPs nanocomposite formation were fully characterized using various techniques such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) analyses, Fourier transform infrared (FTIR) spectoscopy, transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). Furthermore, the antimicrobial effects of produced BC-AgNP composites were evaluated on two pathogenic microorganisms, a gram-negative (Escherichia coli) and a gram-positive (Staphylococcus aureus) by determining their minimum inhibitory concentrations (MIC), and minimum bactericidal concentrations (MBC) using an agar diffusion assay. The results show that the BC-AgNPs composite has good antimicrobial activity against Escherichia coli but less against Staphylococcus aureus. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"18 1","pages":"34 - 46"},"PeriodicalIF":4.6,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80475937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-16DOI: 10.1080/20550324.2022.2054211
Yuhuan Lv, Lizhen Min, Fengxiao Niu, Xiangyang Chen, Biao Zhao, Yong Chang Liu, Kai Pan
Abstract With the rapid development of artificial intelligence and ever-increasing demand for electronic devices, constructing high-performance flexible pressure sensors is urgently needed. In this study, a novel flexible pressure sensor with superhigh sensitivity and ultrawide detection range is tactfully designed and prepared based on wrinkle-structured MXene film. Due to the unique wrinkle structure, the prepared pressure sensor exhibits outstanding performance including high sensitivity of nearly 860 kPa−1, wide detection range (0.5 Pa ‒ 30 kPa), short response/recover time (40/53 ms) and high stability (11600 cycles). A multi-scale working mechanism is proposed to explain the sensing process. Interestingly, the prepared sensor can easily detect the smallest movement of a millet (2.4 mg) in real time. Based on these advantages, the prepared pressure sensor is expected to show significant potentials in future physiological detection and precision instrument monitoring systems. Graphical Abstract
随着人工智能的快速发展和对电子器件需求的不断增加，迫切需要构建高性能柔性压力传感器。本研究巧妙地设计并制备了一种基于MXene薄膜的超高灵敏度、超宽检测范围的柔性压力传感器。由于独特的皱纹结构，所制备的压力传感器具有近860 kPa−1的高灵敏度、宽检测范围(0.5 Pa - 30 kPa)、短响应/恢复时间(40/53 ms)和高稳定性(11600次循环)等优异性能。提出了一种多尺度的工作机制来解释感知过程。有趣的是，所制备的传感器可以轻松地实时检测小米(2.4毫克)的最小运动。基于这些优点，所制备的压力传感器有望在未来的生理检测和精密仪器监测系统中显示出巨大的潜力。图形抽象
{"title":"Wrinkle-structured MXene film assists flexible pressure sensors with superhigh sensitivity and ultrawide detection range","authors":"Yuhuan Lv, Lizhen Min, Fengxiao Niu, Xiangyang Chen, Biao Zhao, Yong Chang Liu, Kai Pan","doi":"10.1080/20550324.2022.2054211","DOIUrl":"https://doi.org/10.1080/20550324.2022.2054211","url":null,"abstract":"Abstract With the rapid development of artificial intelligence and ever-increasing demand for electronic devices, constructing high-performance flexible pressure sensors is urgently needed. In this study, a novel flexible pressure sensor with superhigh sensitivity and ultrawide detection range is tactfully designed and prepared based on wrinkle-structured MXene film. Due to the unique wrinkle structure, the prepared pressure sensor exhibits outstanding performance including high sensitivity of nearly 860 kPa−1, wide detection range (0.5 Pa ‒ 30 kPa), short response/recover time (40/53 ms) and high stability (11600 cycles). A multi-scale working mechanism is proposed to explain the sensing process. Interestingly, the prepared sensor can easily detect the smallest movement of a millet (2.4 mg) in real time. Based on these advantages, the prepared pressure sensor is expected to show significant potentials in future physiological detection and precision instrument monitoring systems. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"1 1","pages":"81 - 94"},"PeriodicalIF":4.6,"publicationDate":"2022-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83103799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-07DOI: 10.1080/20550324.2021.2008209
M. E. Talukder, Fariya Alam, Md. Nahid Pervez, Wang Jiangming, Fahim Hassan, George K Stylios, V. Naddeo, Hongchen Song
Abstract Membrane materials might be used for face protection because they can decontaminate the inhaled air from particle pollution and viruses like the SARS-Cov0-2 which damages our respiration system. In this study, plyethersulfone membranes (PES) were synthesized with green solvent at room temperature and its filtration effectiveness was investigated against nano-bacteria (size 0.05 to 0.2 µm) by measuring their Bacterial Filtration Efficiency (BFE) and micro aerosol size (0.3 µm), and Particulate Filtration Efficiency (PFE). The average SARS-CoV-2 diameters are between 50 nm to 160 nm. A series of experiments were performed to accomplish between 0.03 to 0.21 µm PES sponge like diameters so that can be used for SARS-CoV-2 filtration. Results showed that nanofiltration/ultrafiltration could filter 99.9% of bacteria and aerosol from contaminated air the size of the Covid-19 molecule. Graphical Abstract
{"title":"New generation washable PES membrane face mask for virus filtration","authors":"M. E. Talukder, Fariya Alam, Md. Nahid Pervez, Wang Jiangming, Fahim Hassan, George K Stylios, V. Naddeo, Hongchen Song","doi":"10.1080/20550324.2021.2008209","DOIUrl":"https://doi.org/10.1080/20550324.2021.2008209","url":null,"abstract":"Abstract Membrane materials might be used for face protection because they can decontaminate the inhaled air from particle pollution and viruses like the SARS-Cov0-2 which damages our respiration system. In this study, plyethersulfone membranes (PES) were synthesized with green solvent at room temperature and its filtration effectiveness was investigated against nano-bacteria (size 0.05 to 0.2 µm) by measuring their Bacterial Filtration Efficiency (BFE) and micro aerosol size (0.3 µm), and Particulate Filtration Efficiency (PFE). The average SARS-CoV-2 diameters are between 50 nm to 160 nm. A series of experiments were performed to accomplish between 0.03 to 0.21 µm PES sponge like diameters so that can be used for SARS-CoV-2 filtration. Results showed that nanofiltration/ultrafiltration could filter 99.9% of bacteria and aerosol from contaminated air the size of the Covid-19 molecule. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"42 1","pages":"13 - 23"},"PeriodicalIF":4.6,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91167082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-07DOI: 10.1080/20550324.2021.2008208
I. Ahmad, M. Faisal, Qazi Zan-Ul-Abadin, T. Javed, K. Loganathan
Abstract In the field of nano-composites, hybrid nano-fluids have noteworthy applications in aerospace, energy materials, thermal sensors, antifouling, etc. because of their ability to produce higher thermal conductivity than conventional nanofluids. Different combinations of nanocomposites have been found in the literature to develop the suitable hybrid-mixture, but no study has been found yet about the combined influence of ceria and zinc-oxide nanocomposites in the host liquid. In this article, unsteady 3 D transport of water driven hybrid nano-fluid with the consequences of brick shaped nanocomposites (ceria; and zinc oxide; ) has deliberated with the thermal link of heat source/sink. Variable thermal conditions have been supplied at the surface with the effect of a magnetic environment. Similarity relations have been used to articulate the transport equations into solvable forms and then solved numerically via Keller-Box method. Nusselt number and skin-friction coefficients have also plotted with the wide ranges of involved parameters. Thermal setup has also briefly been discussed with the non-uniformity of surface temperature. Rate of heat transfer has significantly improved with the amounts of ceria (1 wt% to 10 wt%) and zinc-oxide (1 wt% to 10 wt%) nanocomposites. The Nusselt number is reported in the range of 4.0 to 4.8 with the increasing amount of from −0.6 to −0.2, whereas it is reported in the range of 3.1 to 3.9 with the varying amount of from 0.2 to 0.6. Rate of heat transfer is observed higher for zinc-oxide nanoparticles as compared to ceria nanoparticles. Graphical Abstract
{"title":"Unsteady 3D heat transport in hybrid nanofluid containing brick shaped ceria and zinc-oxide nanocomposites with heat source/sink","authors":"I. Ahmad, M. Faisal, Qazi Zan-Ul-Abadin, T. Javed, K. Loganathan","doi":"10.1080/20550324.2021.2008208","DOIUrl":"https://doi.org/10.1080/20550324.2021.2008208","url":null,"abstract":"Abstract In the field of nano-composites, hybrid nano-fluids have noteworthy applications in aerospace, energy materials, thermal sensors, antifouling, etc. because of their ability to produce higher thermal conductivity than conventional nanofluids. Different combinations of nanocomposites have been found in the literature to develop the suitable hybrid-mixture, but no study has been found yet about the combined influence of ceria and zinc-oxide nanocomposites in the host liquid. In this article, unsteady 3 D transport of water driven hybrid nano-fluid with the consequences of brick shaped nanocomposites (ceria; and zinc oxide; ) has deliberated with the thermal link of heat source/sink. Variable thermal conditions have been supplied at the surface with the effect of a magnetic environment. Similarity relations have been used to articulate the transport equations into solvable forms and then solved numerically via Keller-Box method. Nusselt number and skin-friction coefficients have also plotted with the wide ranges of involved parameters. Thermal setup has also briefly been discussed with the non-uniformity of surface temperature. Rate of heat transfer has significantly improved with the amounts of ceria (1 wt% to 10 wt%) and zinc-oxide (1 wt% to 10 wt%) nanocomposites. The Nusselt number is reported in the range of 4.0 to 4.8 with the increasing amount of from −0.6 to −0.2, whereas it is reported in the range of 3.1 to 3.9 with the varying amount of from 0.2 to 0.6. Rate of heat transfer is observed higher for zinc-oxide nanoparticles as compared to ceria nanoparticles. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"49 1","pages":"1 - 12"},"PeriodicalIF":4.6,"publicationDate":"2022-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86722533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-02DOI: 10.1080/20550324.2021.1949517
S. Klayya, N. Tawichai, U. Intatha, Han Zhang, E. Bilotti, N. Soykeabkaew
Abstract Nanofibrillated cellulose (NFC) was systematically tailored by ultrasonic-assisted esterification with lactic acid at different amplitudes and times, which led to modified NFC (mNFC) with different degrees of substitution (DS), between 0.21 and 0.55, as confirmed by titration, FTIR, and C13 NMR. A partial fragmentation and decrease in crystallinity of mNFC were revealed by TEM and XRD. To form molded pulp sheets, 5 wt% mNFC was added into a bagasse (BG) pulp slurry, then partially dewatered before hot-pressed. mNFC worked effectively as self-retention aid, partly solving the issue of drainage during sheet forming as commonly observed from unmodified NFC. The BG/mNFC (DS 0.55) sheet exhibited an enhancement in tensile properties. Water resistance and barrier performance of the current sheets were also evidently increased. The results suggested that the higher DS on mNFC can improve water resistance and mechanical properties, simultaneously overcoming drainage challenges in processing of molded pulp products. Graphical Abstract
{"title":"Tailoring nanofibrillated cellulose through sonication and its potential use in molded pulp packaging","authors":"S. Klayya, N. Tawichai, U. Intatha, Han Zhang, E. Bilotti, N. Soykeabkaew","doi":"10.1080/20550324.2021.1949517","DOIUrl":"https://doi.org/10.1080/20550324.2021.1949517","url":null,"abstract":"Abstract Nanofibrillated cellulose (NFC) was systematically tailored by ultrasonic-assisted esterification with lactic acid at different amplitudes and times, which led to modified NFC (mNFC) with different degrees of substitution (DS), between 0.21 and 0.55, as confirmed by titration, FTIR, and C13 NMR. A partial fragmentation and decrease in crystallinity of mNFC were revealed by TEM and XRD. To form molded pulp sheets, 5 wt% mNFC was added into a bagasse (BG) pulp slurry, then partially dewatered before hot-pressed. mNFC worked effectively as self-retention aid, partly solving the issue of drainage during sheet forming as commonly observed from unmodified NFC. The BG/mNFC (DS 0.55) sheet exhibited an enhancement in tensile properties. Water resistance and barrier performance of the current sheets were also evidently increased. The results suggested that the higher DS on mNFC can improve water resistance and mechanical properties, simultaneously overcoming drainage challenges in processing of molded pulp products. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"49 1","pages":"109 - 122"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72570599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-01-02DOI: 10.1080/20550324.2020.1868690
V. Aigbodion
Abstract Carbon nanotubes (CNTs) decorated with silver nanoparticles (AgNPs) are promising nanomaterials for improving the dielectric properties of polymer materials for energy storage and micro-capacitor applications. However, the cost of AgNPs limits their wide application. This work describes the synthesis of green silver nanoparticles (GAgNPs) from cashew leaves and their hybridization with CNTs. These new hybrid nanocomposites were developed by adding 0.1, 0.2, 0.3, 0.4 and 0.5% CNTs and 0.5% GAgNPs in an epoxy matrix. Electrical conductivity, dielectric constant, and capacitor raised as CNTs content increased from 0.1 to 0.5% with 0.5% GAgNPs. The high dielectric constant reported in this work was made possible because of the high electron mobility of GAgNPs, which helps to enhance the conductivity of the epoxy. The highest electrical conductivity and dielectric constant were obtained for hybrid nanocomposites based on 0.5% CNTs and 0.5% GAgNPs. It was established that GAgNPs modified CNTs can be used to enhanced the electrical conductivity, dielectric constant and capacitance of epoxy resins for isotropic conductive adhesives, assemblies, and electronic packaging applications. Graphical Abstract
{"title":"Explicit microstructure and electrical conductivity of epoxy/carbon nanotube and green silver nanoparticle enhanced hybrid dielectric composites","authors":"V. Aigbodion","doi":"10.1080/20550324.2020.1868690","DOIUrl":"https://doi.org/10.1080/20550324.2020.1868690","url":null,"abstract":"Abstract Carbon nanotubes (CNTs) decorated with silver nanoparticles (AgNPs) are promising nanomaterials for improving the dielectric properties of polymer materials for energy storage and micro-capacitor applications. However, the cost of AgNPs limits their wide application. This work describes the synthesis of green silver nanoparticles (GAgNPs) from cashew leaves and their hybridization with CNTs. These new hybrid nanocomposites were developed by adding 0.1, 0.2, 0.3, 0.4 and 0.5% CNTs and 0.5% GAgNPs in an epoxy matrix. Electrical conductivity, dielectric constant, and capacitor raised as CNTs content increased from 0.1 to 0.5% with 0.5% GAgNPs. The high dielectric constant reported in this work was made possible because of the high electron mobility of GAgNPs, which helps to enhance the conductivity of the epoxy. The highest electrical conductivity and dielectric constant were obtained for hybrid nanocomposites based on 0.5% CNTs and 0.5% GAgNPs. It was established that GAgNPs modified CNTs can be used to enhanced the electrical conductivity, dielectric constant and capacitance of epoxy resins for isotropic conductive adhesives, assemblies, and electronic packaging applications. Graphical Abstract","PeriodicalId":18872,"journal":{"name":"Nanocomposites","volume":"1 1","pages":"35 - 43"},"PeriodicalIF":4.6,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83088279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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