Carbon nanotubes (CNTs) are nanostructures made from rolled graphene planes and have several intriguing chemical and physical characteristics. Allotropes of carbon having a nanostructure that can have a length-to-diameter ratio greater than 1,000,000 are known as carbon nanotubes (CNTs). These cylindrical carbon molecules have unique features that could make them valuable in a variety of nanotechnology applications. Their distinct surface area, stiffness, strength, and durability have generated a significant amount of interest in the health industry to achieve bio-functionalities, CNTs can be connected with a variety of biological substances, such as hormones, proteins, and nucleic acids. There are two types of CNTs: single-walled (SWNTs) and multi-walled (MWNTs). Their high aspect ratio, ultralightweight, strength, strong thermal conductivity, and electrical properties ranging from metallic to semiconducting are just a few of their intriguing characteristics. Drug delivery, blood cancer, breast cancer, brain cancer, liver cancer, cervical cancer, immunological treatment, biomedical imaging, biosensors, and tissue engineering are all areas where CNTs are beneficial, and the toxicology of carbon nanotubes is also discussed here.
{"title":"Review of Carbon Nanotube Toxicity and Evaluation of Possible Implications to Occupational and Environmental Health","authors":"H. Aldosari","doi":"10.4028/p-4gnL3O","DOIUrl":"https://doi.org/10.4028/p-4gnL3O","url":null,"abstract":"Carbon nanotubes (CNTs) are nanostructures made from rolled graphene planes and have several intriguing chemical and physical characteristics. Allotropes of carbon having a nanostructure that can have a length-to-diameter ratio greater than 1,000,000 are known as carbon nanotubes (CNTs). These cylindrical carbon molecules have unique features that could make them valuable in a variety of nanotechnology applications. Their distinct surface area, stiffness, strength, and durability have generated a significant amount of interest in the health industry to achieve bio-functionalities, CNTs can be connected with a variety of biological substances, such as hormones, proteins, and nucleic acids. There are two types of CNTs: single-walled (SWNTs) and multi-walled (MWNTs). Their high aspect ratio, ultralightweight, strength, strong thermal conductivity, and electrical properties ranging from metallic to semiconducting are just a few of their intriguing characteristics. Drug delivery, blood cancer, breast cancer, brain cancer, liver cancer, cervical cancer, immunological treatment, biomedical imaging, biosensors, and tissue engineering are all areas where CNTs are beneficial, and the toxicology of carbon nanotubes is also discussed here.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"14 1","pages":"35 - 49"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82503589","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}
S. Wyantuti, Juliani Iskandar, Retna Putri Fauzia, H. Bahti
Dysprosium oxide nanoparticles (Dy2O3-nanoparticles) have been extensively used in many different fields of technologies. In addition, with a proper synthesis modification, Dy2O3-nanoparticles are promising materials not only for industry purposes, but also for biomedical applications, for instance, through polyethyleneglycol (PEG) attachment as a template on nanoparticles. This study focuses on the optimization of hydrothermal synthesis of Dy2O3-nanoparticles using Response Surface Methodology – Box-Behnken experimental design (RSM-BBD). The influences of the volume and concentration of PEG-template to the size diameter of nanoparticles were also studied. The crystal structure and surface morphology Dy2O3-nanoparticles with PEG-template modification were characterized using Tabletop Scanning Electron Microscopy (TSEM) coupled with Energy Dispersive X-Rays (SEM-EDX) and X-Rays Diffraction (XRD). Dy2O3-nanoparticles were prepared by using hydrothermal synthesis method with PEG-template attachment on the nanoparticles. PEG as a template will create the uniform shapes and prevent the agglomeration of the nanoparticles. For further biomedical applications, it also helps to enhance the biocompatibility of nanoparticles. The optimization of influence parameters on the hydrothermal synthesis of Dy2O3-nanoparticles, (e.g. mass ratio precursor (PEG and Dy2O3), temperature, and time) were investigated using RSM-BBD. The optimum conditions were 15 g PEG and 0.45 g Dy2O3 at 200°C for 7 h resulting in the highest amount of Dy2O3-nanoparticles products. SEM image results show spherical and nanowires shapes of Dy2O3-nanoparticles produced with the average size diameter of 10.1 nm as the smallest size of nanoparticles. In addition, XRD-patterns indicates the typical cubic structure of Dy2O3-nanoparticles with the estimation crystal size of 45.47 nm.
氧化镝纳米颗粒(dy2o3纳米颗粒)已广泛应用于许多不同的技术领域。此外，通过适当的合成修饰，dy2o3纳米颗粒不仅具有工业用途，而且具有生物医学应用的前景，例如，通过聚乙二醇(PEG)附着在纳米颗粒上作为模板。采用响应面法- Box-Behnken实验设计(RSM-BBD)对水热合成纳米dy2o3的工艺进行了优化。研究了聚乙二醇模板的体积和浓度对纳米颗粒粒径的影响。利用桌面扫描电镜(sem)、能量色散x射线(SEM-EDX)和x射线衍射(XRD)对peg模板修饰后的dy2o3纳米颗粒的晶体结构和表面形貌进行了表征。采用水热合成法，在纳米颗粒上附着peg模板，制备了dy2o3纳米颗粒。聚乙二醇作为模板将产生均匀的形状，并防止纳米颗粒聚集。对于进一步的生物医学应用，它也有助于提高纳米颗粒的生物相容性。利用RSM-BBD研究了影响水热合成纳米Dy2O3的参数(如前驱体(PEG和Dy2O3)的质量比、温度和时间)的优化。最佳工艺条件为15 g PEG和0.45 g Dy2O3，温度为200℃，反应时间为7 h。扫描电镜结果显示，制备的dy2o3纳米颗粒呈球形和纳米线状，最小粒径为10.1 nm。此外，xrd图谱显示了典型的立方结构，估计晶粒尺寸为45.47 nm。
{"title":"Optimization of Hydrothermal Synthesis of Dysprosium Oxide Nanoparticles- Attached-Polyethyleneglycol Template Using Response Surface Methodology- Box-Behnken","authors":"S. Wyantuti, Juliani Iskandar, Retna Putri Fauzia, H. Bahti","doi":"10.4028/p-6ytPC9","DOIUrl":"https://doi.org/10.4028/p-6ytPC9","url":null,"abstract":"Dysprosium oxide nanoparticles (Dy2O3-nanoparticles) have been extensively used in many different fields of technologies. In addition, with a proper synthesis modification, Dy2O3-nanoparticles are promising materials not only for industry purposes, but also for biomedical applications, for instance, through polyethyleneglycol (PEG) attachment as a template on nanoparticles. This study focuses on the optimization of hydrothermal synthesis of Dy2O3-nanoparticles using Response Surface Methodology – Box-Behnken experimental design (RSM-BBD). The influences of the volume and concentration of PEG-template to the size diameter of nanoparticles were also studied. The crystal structure and surface morphology Dy2O3-nanoparticles with PEG-template modification were characterized using Tabletop Scanning Electron Microscopy (TSEM) coupled with Energy Dispersive X-Rays (SEM-EDX) and X-Rays Diffraction (XRD). Dy2O3-nanoparticles were prepared by using hydrothermal synthesis method with PEG-template attachment on the nanoparticles. PEG as a template will create the uniform shapes and prevent the agglomeration of the nanoparticles. For further biomedical applications, it also helps to enhance the biocompatibility of nanoparticles. The optimization of influence parameters on the hydrothermal synthesis of Dy2O3-nanoparticles, (e.g. mass ratio precursor (PEG and Dy2O3), temperature, and time) were investigated using RSM-BBD. The optimum conditions were 15 g PEG and 0.45 g Dy2O3 at 200°C for 7 h resulting in the highest amount of Dy2O3-nanoparticles products. SEM image results show spherical and nanowires shapes of Dy2O3-nanoparticles produced with the average size diameter of 10.1 nm as the smallest size of nanoparticles. In addition, XRD-patterns indicates the typical cubic structure of Dy2O3-nanoparticles with the estimation crystal size of 45.47 nm.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"6 1","pages":"13 - 18"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84685514","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}
A. Munio, A. A. Pido, Leo Cristobal C. Ambolode II
Here, we report the bonding mechanism and electronic structure of single-walled carbon nanotube and oxygenated single-walled carbon nanotube functionalized by cellulose chain using first-principles density functional theory. Analysis of the optimized molecular configuration and charge redistribution of the nanohybrid indicates that the cellulose chain binds with the prototype single-walled carbon nanotube and oxygenated single-walled carbon nanotube via physisorption. The cellulose chain adsorption on the single-walled carbon nanotube preserved its electronic structure. On the other hand, the electronic structure of the oxygenated single-walled carbon nanotube and cellulose complex reveals that the electronic states of the cellulose tend to populate in the forbidden gap, thus, lowering the bandgap of the overall complex. The electronic structure of the complex can be considered as the superposition of its constituents in which no significant hybridization of the orbital characters is observable. The findings confirm that cellulose is indeed suitable for the non-covalent functionalization of single-walled carbon nanotubes and provide new insights into the electronic structure of the oxygenated single-walled carbon nanotube/cellulose complex.
{"title":"First-Principles Insights on the Bonding Mechanism and Electronic Structure of SWCNT and Oxygenated-SWCNT Functionalized by Cellulose Biopolymer","authors":"A. Munio, A. A. Pido, Leo Cristobal C. Ambolode II","doi":"10.4028/p-pNM7bg","DOIUrl":"https://doi.org/10.4028/p-pNM7bg","url":null,"abstract":"Here, we report the bonding mechanism and electronic structure of single-walled carbon nanotube and oxygenated single-walled carbon nanotube functionalized by cellulose chain using first-principles density functional theory. Analysis of the optimized molecular configuration and charge redistribution of the nanohybrid indicates that the cellulose chain binds with the prototype single-walled carbon nanotube and oxygenated single-walled carbon nanotube via physisorption. The cellulose chain adsorption on the single-walled carbon nanotube preserved its electronic structure. On the other hand, the electronic structure of the oxygenated single-walled carbon nanotube and cellulose complex reveals that the electronic states of the cellulose tend to populate in the forbidden gap, thus, lowering the bandgap of the overall complex. The electronic structure of the complex can be considered as the superposition of its constituents in which no significant hybridization of the orbital characters is observable. The findings confirm that cellulose is indeed suitable for the non-covalent functionalization of single-walled carbon nanotubes and provide new insights into the electronic structure of the oxygenated single-walled carbon nanotube/cellulose complex.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"14 1","pages":"51 - 63"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74947704","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}
P. Gupta, Abhishek Gupta, S. K. Gupta, Shivani Gupta, Mayank Shriwastav, R. Yadav
This research article is focused on the structural, electronic, thermal, and vibrational properties of solid biopolymer electrolytes based on Agar-Agar and sodium hexafluorophosphate (NaPF6) salt. Herein, the density functional theory (DFT) technique is used to investigate these properties. The structural analysis provides information about the interactions between Agar-Agar and NaPF6 and hence interaction energy is analysed. Thermodynamic parameters such as Gibbs’ free energy (G), enthalpy (H), entropy (S), and specific heat (Cv) etc. are studied by frequency analysis at normal temperature pressure (NTP) of titled electrolytes. The chemical descriptors of the electrolytes have been studied using the molecular orbital theory (MOT). Molecular electrostatic potential surface (MEPS) demonstrates the three-dimensional molecular charge distribution and illustrates the electron-rich and deficit regions over the whole electrolyte system. Mulliken population analysis (MPA) gives the identification of intramolecular hydrogen bonding. The theoretical infrared (IR) study confirms the formation of the complex system between Agar-Agar and NaPF6 salt. The overall DFT studies of sodium ion-based biopolymer electrolytes have better possibilities for safe sodium-ion batteries.
{"title":"DFT Study on Na-Ion Conducting Solid Biopolymer Electrolyte-Based on Agar-Agar and NaPF6 for Sodium-Ion Batteries","authors":"P. Gupta, Abhishek Gupta, S. K. Gupta, Shivani Gupta, Mayank Shriwastav, R. Yadav","doi":"10.4028/p-RZ9JFl","DOIUrl":"https://doi.org/10.4028/p-RZ9JFl","url":null,"abstract":"This research article is focused on the structural, electronic, thermal, and vibrational properties of solid biopolymer electrolytes based on Agar-Agar and sodium hexafluorophosphate (NaPF6) salt. Herein, the density functional theory (DFT) technique is used to investigate these properties. The structural analysis provides information about the interactions between Agar-Agar and NaPF6 and hence interaction energy is analysed. Thermodynamic parameters such as Gibbs’ free energy (G), enthalpy (H), entropy (S), and specific heat (Cv) etc. are studied by frequency analysis at normal temperature pressure (NTP) of titled electrolytes. The chemical descriptors of the electrolytes have been studied using the molecular orbital theory (MOT). Molecular electrostatic potential surface (MEPS) demonstrates the three-dimensional molecular charge distribution and illustrates the electron-rich and deficit regions over the whole electrolyte system. Mulliken population analysis (MPA) gives the identification of intramolecular hydrogen bonding. The theoretical infrared (IR) study confirms the formation of the complex system between Agar-Agar and NaPF6 salt. The overall DFT studies of sodium ion-based biopolymer electrolytes have better possibilities for safe sodium-ion batteries.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"19 1","pages":"65 - 78"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90301600","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}
S. Hartati, P. Y. D. Maulida, T. Zakly, I. Mulyani, D. Onggo, M. H. Mahyuddin, A. Noviyanto, A. Arramel, N. Rochman
The emergence of two-dimensional (2D) hybrid metal-halide perovskites has garnered significant attentions for optoelectronic devices and light-emitting applications. Since the toxicity of lead-based perovskites could potentially be harmful to the environment, several works have attempted to change the active metal to tin (Sn). Here, we investigate the characterization of (PEA)2SnBrxI4-x mixed halide perovskites using X-ray fluorescence (XRF), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Qualitative XRF analysis suggests the presence of tin, bromine and iodine emissions under the mid-Z and high-Z ranges. In mid-Z range, Br-Kα peak appeared on 11.96 keV and Br-Kβ was detected on 13.3 keV. Meanwhile Sn-Kα, I-Kα, I-Kβ1, and I-Kβ2 peaks were detected in high-Z range on 25.24 keV, 28.6 keV, 32.35 keV and 33.11 keV, respectively. Thus, the elemental composition of mixed halide components exhibits an indicative control that bromine-rich or iodine-rich can be synthesized via rational chemical design. XRD pattern display a systematic progression at the peak 5.18° (corresponds to (002) plane), which unambiguously demonstrated the feasibility to tune halide composition in tin-based hybrid perovskite. It also confirms that (2D) hybrid metal-halide with tunable halide have identical structure for both bromine-rich and iodine-rich composition. Furthermore, the 2θ peaks slightly shifted to lower angle with increasing bromine composition. The presence of C−I bonding on ~500 cm-1 and C-Br bond on ~600 cm-1 in FTIR spectra highlights the functional group of organic cations. These experimental results promote a foundation to implement compositional engineering on 2D-tin mixed-halide perovskites for optoelectronics and scintillators.
{"title":"Vibrational and Structural Properties of Two-Dimensional Tin Mixed-Halide Perovskites","authors":"S. Hartati, P. Y. D. Maulida, T. Zakly, I. Mulyani, D. Onggo, M. H. Mahyuddin, A. Noviyanto, A. Arramel, N. Rochman","doi":"10.4028/p-KAXS1n","DOIUrl":"https://doi.org/10.4028/p-KAXS1n","url":null,"abstract":"The emergence of two-dimensional (2D) hybrid metal-halide perovskites has garnered significant attentions for optoelectronic devices and light-emitting applications. Since the toxicity of lead-based perovskites could potentially be harmful to the environment, several works have attempted to change the active metal to tin (Sn). Here, we investigate the characterization of (PEA)2SnBrxI4-x mixed halide perovskites using X-ray fluorescence (XRF), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Qualitative XRF analysis suggests the presence of tin, bromine and iodine emissions under the mid-Z and high-Z ranges. In mid-Z range, Br-Kα peak appeared on 11.96 keV and Br-Kβ was detected on 13.3 keV. Meanwhile Sn-Kα, I-Kα, I-Kβ1, and I-Kβ2 peaks were detected in high-Z range on 25.24 keV, 28.6 keV, 32.35 keV and 33.11 keV, respectively. Thus, the elemental composition of mixed halide components exhibits an indicative control that bromine-rich or iodine-rich can be synthesized via rational chemical design. XRD pattern display a systematic progression at the peak 5.18° (corresponds to (002) plane), which unambiguously demonstrated the feasibility to tune halide composition in tin-based hybrid perovskite. It also confirms that (2D) hybrid metal-halide with tunable halide have identical structure for both bromine-rich and iodine-rich composition. Furthermore, the 2θ peaks slightly shifted to lower angle with increasing bromine composition. The presence of C−I bonding on ~500 cm-1 and C-Br bond on ~600 cm-1 in FTIR spectra highlights the functional group of organic cations. These experimental results promote a foundation to implement compositional engineering on 2D-tin mixed-halide perovskites for optoelectronics and scintillators.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"65 1","pages":"1 - 6"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85617080","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}
Shohei Kajiwara, K. Itatani, H. Kuwahara, T. Yokoi, Tetsuo Sasaki, H. Kuroe
Preparation conditions of titanium oxide (TiO2) powders were examined by the hydrolysis of titanium potassium oxalate (K2TiO(C2O4)2), through the homogeneous precipitation method (80oC for 24 h) and hydrothermal treatment (160 or 170oC for 1 h). According to the Rietveld analysis, almost a single phase of anatase TiO2 could be obtained by the hydrothermal treatment at 160oC for 1 h, followed by the heating at 900oC for 10 min in air. The molar ratio of anatase to rutile TiO2 was found to be controlled by optimizing the hydrothermal conditions in the solution and the heating conditions in air for the photocatalytic activity.
{"title":"Anatase/Rutile Phase Control of Titanium Oxide Nanoparticles Synthesized from Potassium Titanium Oxalate by Homogeneous Precipitation and Hydrothermal Methods","authors":"Shohei Kajiwara, K. Itatani, H. Kuwahara, T. Yokoi, Tetsuo Sasaki, H. Kuroe","doi":"10.4028/p-Q5lZkp","DOIUrl":"https://doi.org/10.4028/p-Q5lZkp","url":null,"abstract":"Preparation conditions of titanium oxide (TiO2) powders were examined by the hydrolysis of titanium potassium oxalate (K2TiO(C2O4)2), through the homogeneous precipitation method (80oC for 24 h) and hydrothermal treatment (160 or 170oC for 1 h). According to the Rietveld analysis, almost a single phase of anatase TiO2 could be obtained by the hydrothermal treatment at 160oC for 1 h, followed by the heating at 900oC for 10 min in air. The molar ratio of anatase to rutile TiO2 was found to be controlled by optimizing the hydrothermal conditions in the solution and the heating conditions in air for the photocatalytic activity.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"231 1","pages":"7 - 12"},"PeriodicalIF":0.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77053002","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}
Recent findings on the production of quantum dots from various carbon sources shed light on their advantages such as sustainability, low toxicity and cost, and one-step synthesis over their heavy-metal counterpart. This paper focused on developing and analyzing the production of carbon quantum dots from glycerol via hydrothermal carbonization and conjugated with Tetraethylenepentamine (TEPA). A 23 full factorial experimental design was applied considering factors: the compositional ratio of TEPA (A), time of exposure (B), and temperature of reaction (C). Statistical analyses revealed experimental factors A and B; and interactions of AB and AC had statistically significant effects on the response variable, quantum yield (QY). Factor C as the main effect was not significant but was included in the statistical model to maintain hierarchy and integrity. Coded and actual statistical models were presented here.
{"title":"Full Factorial Design Analysis of the Facile Synthesis of Organo-Conjugated Carbon Quantum Dots from Glycerol","authors":"Roland Andrew T. Cruz","doi":"10.4028/p-t8yxr6","DOIUrl":"https://doi.org/10.4028/p-t8yxr6","url":null,"abstract":"Recent findings on the production of quantum dots from various carbon sources shed light on their advantages such as sustainability, low toxicity and cost, and one-step synthesis over their heavy-metal counterpart. This paper focused on developing and analyzing the production of carbon quantum dots from glycerol via hydrothermal carbonization and conjugated with Tetraethylenepentamine (TEPA). A 23 full factorial experimental design was applied considering factors: the compositional ratio of TEPA (A), time of exposure (B), and temperature of reaction (C). Statistical analyses revealed experimental factors A and B; and interactions of AB and AC had statistically significant effects on the response variable, quantum yield (QY). Factor C as the main effect was not significant but was included in the statistical model to maintain hierarchy and integrity. Coded and actual statistical models were presented here.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"11 1","pages":"63 - 72"},"PeriodicalIF":0.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84920263","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}
Metal–organic frameworks (MOFs) belong to the group of porous and crystalline substances that enable the diversity of composition and structure beyond conventional solid-state materials. In the past few years’ MOFs have created enormous interest due to their potential applications in clean energy, becoming a storage medium for H2 and CH4. The luminescent metal-organic frameworks (LMOFs) are recognized for a broad range of applications in chemical sensing, energy-efficient lighting, removal of toxic substances from gases and liquids, bio-imaging, and related fields. The present review highlights the basic methods of synthesis, current challenges in the synthesis of novel MOF materials, various characterization methods, scope, and opportunities available for the future related to MOF research. The application of MOF materials in packaging and catalysis was also discussed.Keywords: Luminescent, Metal–organic frameworks (MOFs), Sensors, Storage energies, Supercapacitors.
{"title":"The Upcoming Future of Metal-Organic Frameworks: Challenges and Opportunities","authors":"R. Mehrotra, S. Shukla, P. Gaur","doi":"10.4028/p-oiprx0","DOIUrl":"https://doi.org/10.4028/p-oiprx0","url":null,"abstract":"Metal–organic frameworks (MOFs) belong to the group of porous and crystalline substances that enable the diversity of composition and structure beyond conventional solid-state materials. In the past few years’ MOFs have created enormous interest due to their potential applications in clean energy, becoming a storage medium for H2 and CH4. The luminescent metal-organic frameworks (LMOFs) are recognized for a broad range of applications in chemical sensing, energy-efficient lighting, removal of toxic substances from gases and liquids, bio-imaging, and related fields. The present review highlights the basic methods of synthesis, current challenges in the synthesis of novel MOF materials, various characterization methods, scope, and opportunities available for the future related to MOF research. The application of MOF materials in packaging and catalysis was also discussed.Keywords: Luminescent, Metal–organic frameworks (MOFs), Sensors, Storage energies, Supercapacitors.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"46 1","pages":"27 - 48"},"PeriodicalIF":0.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76829817","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}
Ramesh K. Agarwal, V. Adimule, Rajendrachari Shashanka, Hamada Shoukry
{"title":"Nano Hybrids and Composites Vol. 39","authors":"Ramesh K. Agarwal, V. Adimule, Rajendrachari Shashanka, Hamada Shoukry","doi":"10.4028/b-t6vxub","DOIUrl":"https://doi.org/10.4028/b-t6vxub","url":null,"abstract":"","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"28 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139372229","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}
Ian Deniell S. Magsino, Alyssa Jehn M. Aloria, Jhon Wesley B. Magallanes, Marian B. Bauan, Marjelyn Mae M. Castillo, Nicole Karen Agena, Prancess Rowa A. Capina, Anita P. Aquino, Reymark D. Maalihan
Banana peels are considered one of the most abundant biowastes while Saba banana (Musa acuminata × balbisiana) is one of the most consumed fruit varieties in the Philippines. This research focused on the synthesis and characterization of carbon quantum dots (CQDs) from ripe and unripe Saba banana peels (SBP) via hydrothermal carbonization using low (100°C) and high (200°C) carbonization temperatures. Transmission electron microscopy revealed that ripe CQDs synthesized at these temperatures (rCQDs-100 and rCQDs-200, respectively) possessed disk-shaped and quasi-spherical structures with particle size range of 1.71-5.05 nm and 1.55-4.66 nm, respectively. However, unripe CQDs (uCQDs-100 and uCQDs-200, respectively) could not be considered as quantum dots due to their flake-like morphology and relatively large particle size (>40 nm and 2.21-21.24 nm, respectively). Likewise, Fourier-transform infrared spectroscopy identified the presence of enormous functional groups in all samples. Interestingly, C=N group was found only in uCQDs corresponding to the presence of chlorophyll in the samples. Moreover, all the CQDs emitted blue-green color under UV light illumination, with rCQDs-200 exhibited the best fluorescence emission. Thus, the approach of synthesizing CQDs using ripe SBP at higher temperature offers higher reacted precursors, better morphology, and greater fluorescence emission.
{"title":"Synthesis and Characterization of Carbon Quantum Dots from Saba (Musa acuminata× balbisiana) Banana Peel Waste: Effect of Maturity and Carbonization Temperature","authors":"Ian Deniell S. Magsino, Alyssa Jehn M. Aloria, Jhon Wesley B. Magallanes, Marian B. Bauan, Marjelyn Mae M. Castillo, Nicole Karen Agena, Prancess Rowa A. Capina, Anita P. Aquino, Reymark D. Maalihan","doi":"10.4028/p-3204ym","DOIUrl":"https://doi.org/10.4028/p-3204ym","url":null,"abstract":"Banana peels are considered one of the most abundant biowastes while Saba banana (Musa acuminata × balbisiana) is one of the most consumed fruit varieties in the Philippines. This research focused on the synthesis and characterization of carbon quantum dots (CQDs) from ripe and unripe Saba banana peels (SBP) via hydrothermal carbonization using low (100°C) and high (200°C) carbonization temperatures. Transmission electron microscopy revealed that ripe CQDs synthesized at these temperatures (rCQDs-100 and rCQDs-200, respectively) possessed disk-shaped and quasi-spherical structures with particle size range of 1.71-5.05 nm and 1.55-4.66 nm, respectively. However, unripe CQDs (uCQDs-100 and uCQDs-200, respectively) could not be considered as quantum dots due to their flake-like morphology and relatively large particle size (>40 nm and 2.21-21.24 nm, respectively). Likewise, Fourier-transform infrared spectroscopy identified the presence of enormous functional groups in all samples. Interestingly, C=N group was found only in uCQDs corresponding to the presence of chlorophyll in the samples. Moreover, all the CQDs emitted blue-green color under UV light illumination, with rCQDs-200 exhibited the best fluorescence emission. Thus, the approach of synthesizing CQDs using ripe SBP at higher temperature offers higher reacted precursors, better morphology, and greater fluorescence emission.","PeriodicalId":18861,"journal":{"name":"Nano Hybrids and Composites","volume":"62 1","pages":"57 - 62"},"PeriodicalIF":0.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88372893","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}
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