Regin Das Thankaian, Meena Muthukrishnan, S. M. K. Thiagamani, S. Siengchin, S. Rangappa
Metal oxide semiconductors (MOS) with distinctive optical and electrical properties are required by the modern electronics industry. In this research it was found that doping of transition and rare-earth metals is suitable for tuning the optical bandgap and dielectric parameters of SnO2 Nanoparticles to meet the requirement for high conductive semiconductors Via one-step hydrothermal synthesis Doping of Sm causes SnO2NP to have a narrower bandgap (2.54 eV) than pure SnO2NPs (3.36 eV), and increased conductivity at higher frequencies and temperature, which is crucial for the potential applications like light-emitting diodes, biological labels, optoelectronic devices, and other technologies. The particle size of the doped and co-doped sample was found to be smaller than pure SnO2 which effectively pronounced the quantum confinement effect in these metal oxides. Co-doping of Sm-Cu ions in the SnO2 lattice was done for the first time to increase the dielectric strength, with absorption shift towards visible blue region suggest the use of this particular sample for photocatalytic application.
{"title":"Impact of metal doping and codoping on the electrical and optical behavior of tin oxide nano particles","authors":"Regin Das Thankaian, Meena Muthukrishnan, S. M. K. Thiagamani, S. Siengchin, S. Rangappa","doi":"10.1680/jnaen.23.00010","DOIUrl":"https://doi.org/10.1680/jnaen.23.00010","url":null,"abstract":"Metal oxide semiconductors (MOS) with distinctive optical and electrical properties are required by the modern electronics industry. In this research it was found that doping of transition and rare-earth metals is suitable for tuning the optical bandgap and dielectric parameters of SnO2 Nanoparticles to meet the requirement for high conductive semiconductors Via one-step hydrothermal synthesis Doping of Sm causes SnO2NP to have a narrower bandgap (2.54 eV) than pure SnO2NPs (3.36 eV), and increased conductivity at higher frequencies and temperature, which is crucial for the potential applications like light-emitting diodes, biological labels, optoelectronic devices, and other technologies. The particle size of the doped and co-doped sample was found to be smaller than pure SnO2 which effectively pronounced the quantum confinement effect in these metal oxides. Co-doping of Sm-Cu ions in the SnO2 lattice was done for the first time to increase the dielectric strength, with absorption shift towards visible blue region suggest the use of this particular sample for photocatalytic application.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41822206","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}
C. N. Onwucha, C. Ehi-Eromosele, S. Ajayi, T. Siyanbola, K. O. Ajanaku
Waste PET bottles (WPB) is fast becoming an environmental nuisance and its valorization to carbon anode could be a sustainable method to manage this waste and also develop cheap and high-performance carbon materials for Li-ion batteries (LIBs). Carbonaceous materials derived from WPB were prepared using an ionothermal carbonization (ITC) method in choline chloride urea-deep eutectic solvent system. The ITC-derived materials were subsequently annealed in air to obtain carbonaceous materials. The ITC-derived carbon displayed ultra-high nitrogen doping but lesser carbonization and graphitic ordering compared to the reference carbon material obtained using hydrothermal carbonization (HTC). Therefore, higher temperature annealing/pyrolysis was recommended for the ITC-derived carbon. The HTC-derived carbon was investigated as anode material in LIB with promising electrochemical performance. The LIB displayed stable reversible capacity of about 130 mAh/g at a current density of 0.1 A/g after 20 cycles and an increasing Coulombic efficiency that reached 98% after the 50th cycle. This work shows that a facile and sustainable synthesis method could be used to produce PET-derived activated carbons with potential applications in energy storage systems such as LIBs.
废弃PET瓶(WPB)正迅速成为环境公害，其碳阳极的增值可能是一种可持续的方法来管理这种废物，也可以开发廉价和高性能的锂离子电池(LIBs)碳材料。在氯化胆碱-尿素-深共熔溶剂体系中，采用离子热炭化法制备了WPB衍生的碳质材料。itc衍生材料随后在空气中退火以获得碳质材料。与采用水热炭化法(HTC)得到的对照碳材料相比，itc衍生的碳材料表现出超高的氮掺杂，但炭化程度和石墨有序度较低。因此，建议对itc衍生碳进行高温退火/热解。研究了htc衍生碳作为锂离子电池负极材料的电化学性能。在0.1 a /g电流密度下，经过20次循环后，锂离子电池的可逆容量稳定在130 mAh/g左右，在第50次循环后，库仑效率达到98%。这项工作表明，一种简单和可持续的合成方法可以用于生产pet衍生的活性炭，在lib等储能系统中具有潜在的应用前景。
{"title":"Valorising waste PET bottles into Li-ion battery anodes using ionothermal carbonisation","authors":"C. N. Onwucha, C. Ehi-Eromosele, S. Ajayi, T. Siyanbola, K. O. Ajanaku","doi":"10.1680/jnaen.22.00047","DOIUrl":"https://doi.org/10.1680/jnaen.22.00047","url":null,"abstract":"Waste PET bottles (WPB) is fast becoming an environmental nuisance and its valorization to carbon anode could be a sustainable method to manage this waste and also develop cheap and high-performance carbon materials for Li-ion batteries (LIBs). Carbonaceous materials derived from WPB were prepared using an ionothermal carbonization (ITC) method in choline chloride urea-deep eutectic solvent system. The ITC-derived materials were subsequently annealed in air to obtain carbonaceous materials. The ITC-derived carbon displayed ultra-high nitrogen doping but lesser carbonization and graphitic ordering compared to the reference carbon material obtained using hydrothermal carbonization (HTC). Therefore, higher temperature annealing/pyrolysis was recommended for the ITC-derived carbon. The HTC-derived carbon was investigated as anode material in LIB with promising electrochemical performance. The LIB displayed stable reversible capacity of about 130 mAh/g at a current density of 0.1 A/g after 20 cycles and an increasing Coulombic efficiency that reached 98% after the 50th cycle. This work shows that a facile and sustainable synthesis method could be used to produce PET-derived activated carbons with potential applications in energy storage systems such as LIBs.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46247233","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}
M. Srivastava, B. P. Pandey, N. Mishra, D. Kumar, V. Tomar, Santosh Kumar
The paper explores electronic (optical) properties of pristine and p-type doped (B, Al, Ga) WSSe monolayer (ML) through first principle calculation. In the electronic properties, total density of states (TDOS) and band gap are investigated which confirms the magnetic attributes induced after doping of p-type (B, Al, Ga) materials in the system. Further, the optical properties are extracted for the studied system in terms of dielectric function (real (ε1), imaginary (ε2)), absorption index (α) and refractive index (n) systematically. The real part of ε1 is showing negative values which means to opaque for light through that region. The imaginary part of ε2 shows that B-doped WSSe ML is a probable aspirant with higher light absorbing capacity along with the absorption index shows the peaks align in the ultraviolet (UV) range for both pristine and p-type doped system dominating in the absorption spectrum. The refractive index (n) is investigated, and the peaks located in the UV region. Again, the B-doped system has the maximum value and is in trend with the reported results. Thus, the optical properties study of p-type doped system concludes that B-doped system is more suitable for designing of optoelectronic devices.
{"title":"Optical properties of 2D pristine and doped Janus WSSe using first principles study","authors":"M. Srivastava, B. P. Pandey, N. Mishra, D. Kumar, V. Tomar, Santosh Kumar","doi":"10.1680/jnaen.22.00028","DOIUrl":"https://doi.org/10.1680/jnaen.22.00028","url":null,"abstract":"The paper explores electronic (optical) properties of pristine and p-type doped (B, Al, Ga) WSSe monolayer (ML) through first principle calculation. In the electronic properties, total density of states (TDOS) and band gap are investigated which confirms the magnetic attributes induced after doping of p-type (B, Al, Ga) materials in the system. Further, the optical properties are extracted for the studied system in terms of dielectric function (real (ε1), imaginary (ε2)), absorption index (α) and refractive index (n) systematically. The real part of ε1 is showing negative values which means to opaque for light through that region. The imaginary part of ε2 shows that B-doped WSSe ML is a probable aspirant with higher light absorbing capacity along with the absorption index shows the peaks align in the ultraviolet (UV) range for both pristine and p-type doped system dominating in the absorption spectrum. The refractive index (n) is investigated, and the peaks located in the UV region. Again, the B-doped system has the maximum value and is in trend with the reported results. Thus, the optical properties study of p-type doped system concludes that B-doped system is more suitable for designing of optoelectronic devices.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49348390","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}
I. Sharma, Hemant Gulupalli, Saanjh Thada, Satyam Jain, R. K. Goyal, Kunal Borse
Reduced toxicity and better atmospheric stability have made Cs2AgBiBr6 double perovskite material a promising photo-absorbing material to replace lead halide based perovskite in solar photovoltaic applications. In this work, for the first time, a novel low-temperature method for the synthesis of lead-free Cs2AgBiBr6 double perovskite ink, using a salt solution of the constituents of Cs2AgBiBr6 at a temperature of as low as 50°C, has been reported. X-ray diffraction study confirmed the presence of Cs2AgBiBr6 double perovskite crystal structure and a UV-visible absorption study was done to calculate the band-gap. Particle size analysis showed that the particle size, in the prepared ink, lies in the range of 700-1000 nm, while scanning electron microscopy was done on a spin-coated substrate to examine the microstructural features of the ink. The present work will help develop a low-cost and simple method for the development of the double perovskite ink further.
{"title":"Low-temperature synthesis of lead-free Cs2AgBiBr6 double perovskite ink","authors":"I. Sharma, Hemant Gulupalli, Saanjh Thada, Satyam Jain, R. K. Goyal, Kunal Borse","doi":"10.1680/jnaen.23.00004","DOIUrl":"https://doi.org/10.1680/jnaen.23.00004","url":null,"abstract":"Reduced toxicity and better atmospheric stability have made Cs2AgBiBr6 double perovskite material a promising photo-absorbing material to replace lead halide based perovskite in solar photovoltaic applications. In this work, for the first time, a novel low-temperature method for the synthesis of lead-free Cs2AgBiBr6 double perovskite ink, using a salt solution of the constituents of Cs2AgBiBr6 at a temperature of as low as 50°C, has been reported. X-ray diffraction study confirmed the presence of Cs2AgBiBr6 double perovskite crystal structure and a UV-visible absorption study was done to calculate the band-gap. Particle size analysis showed that the particle size, in the prepared ink, lies in the range of 700-1000 nm, while scanning electron microscopy was done on a spin-coated substrate to examine the microstructural features of the ink. The present work will help develop a low-cost and simple method for the development of the double perovskite ink further.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47605359","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}
The aim of the work is to synthesize nickel oxide (NiO) nanoparticles and study their applications through the co-precipitation method. The Thermal Gravimetric Analysis (TGA) measured the thermal stability of the synthesized nanoparticles. The X-ray Diffraction (XRD) patterns of NiO have a face-centre cubic structure and an average crystallite size range of 16 nm – 36 nm. Fourier Transform Infra-Red (FTIR) spectra confirmed the formation of Ni-O bonding. The surface morphology has been analyzed using Scanning Electron Microscopy (SEM). The mean particle size was about 50.76 nm, measured from the High Resolution-Transmission Electron Microscopy (HR-TEM) images. The presence of elements in the samples was identified using Energy Dispersive X-ray (EDAX) analysis. The Vibrating Sample Magnetometer (VSM) analysis determined the changes in magnetic behaviour due to the annealing temperature increase in the NiO nanoparticles. The performance of antibacterial activities using NiO nanoparticles on Escherichia coli and Staphylococcus aureus bacterial strains found that the zone of inhibition expanded as concentration increased.
{"title":"Annealing effects on NiO nanoparticles for magnetic behaviour and antibacterial activity studies","authors":"S. Sivakumar, Yengkokpam Robinson","doi":"10.1680/jnaen.22.00002","DOIUrl":"https://doi.org/10.1680/jnaen.22.00002","url":null,"abstract":"The aim of the work is to synthesize nickel oxide (NiO) nanoparticles and study their applications through the co-precipitation method. The Thermal Gravimetric Analysis (TGA) measured the thermal stability of the synthesized nanoparticles. The X-ray Diffraction (XRD) patterns of NiO have a face-centre cubic structure and an average crystallite size range of 16 nm – 36 nm. Fourier Transform Infra-Red (FTIR) spectra confirmed the formation of Ni-O bonding. The surface morphology has been analyzed using Scanning Electron Microscopy (SEM). The mean particle size was about 50.76 nm, measured from the High Resolution-Transmission Electron Microscopy (HR-TEM) images. The presence of elements in the samples was identified using Energy Dispersive X-ray (EDAX) analysis. The Vibrating Sample Magnetometer (VSM) analysis determined the changes in magnetic behaviour due to the annealing temperature increase in the NiO nanoparticles. The performance of antibacterial activities using NiO nanoparticles on Escherichia coli and Staphylococcus aureus bacterial strains found that the zone of inhibition expanded as concentration increased.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43837245","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}
M. R. A. Bhuiyan, Hayati Mamur, Ömer Faruk Dilmaç, Mehmet Ali Üstüner
Environmental pollution, global warming and increasing energy demands are urgent challenges facing society. Governments all over the world have set a national policy target for the transition to a zero or low carbon dioxide economy. As a result, scientists and engineers in industry and academia are working to develop cleaner, alternative and sustainable energy production technologies. One technology that has potential in this green technology transition is thermoelectric generators (TEGs), traditionally used off-grid and isolated from things such as stand-alone solar–thermal cells for military and aerospace applications such as missile-testing systems and space telescope cameras. However, future applications based on home entertainment, security systems and smart metering applications are imminent. Key limitations to this are low efficiency, high costs and self-heating with low thermal conductivity. Hence, this study aims to examine the current state of the art of TEGs and identify future research directions to achieve support for the green technology transition. The key findings of this study show that present successes will fulfill the future advancement of thermoelectric technology by supporting a low carbon dioxide economy.
{"title":"Opportunities for thermoelectric generators in supporting a low carbon economy","authors":"M. R. A. Bhuiyan, Hayati Mamur, Ömer Faruk Dilmaç, Mehmet Ali Üstüner","doi":"10.1680/jnaen.22.00033","DOIUrl":"https://doi.org/10.1680/jnaen.22.00033","url":null,"abstract":"Environmental pollution, global warming and increasing energy demands are urgent challenges facing society. Governments all over the world have set a national policy target for the transition to a zero or low carbon dioxide economy. As a result, scientists and engineers in industry and academia are working to develop cleaner, alternative and sustainable energy production technologies. One technology that has potential in this green technology transition is thermoelectric generators (TEGs), traditionally used off-grid and isolated from things such as stand-alone solar–thermal cells for military and aerospace applications such as missile-testing systems and space telescope cameras. However, future applications based on home entertainment, security systems and smart metering applications are imminent. Key limitations to this are low efficiency, high costs and self-heating with low thermal conductivity. Hence, this study aims to examine the current state of the art of TEGs and identify future research directions to achieve support for the green technology transition. The key findings of this study show that present successes will fulfill the future advancement of thermoelectric technology by supporting a low carbon dioxide economy.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44991535","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}
Qianmin Cong, Chenxu Feng, F. Tao, Jiong Zhou, Xiaoyu Wang, L. Pei
Nd modified BaSn oxide composite nanorods (NdBSCNRs) with different Nd contents were synthesized by an in-situ photo-deposition process. The composite nanorods were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, solid diffuse reflectance spectrum, electrochemical impedance spectroscopy and photoluminescence spectra. The composite nanorods consist of monoclinic BaSn(OH)6, orthorhombic SnO2, monoclinic Ba(OH)2, cubic Nd2O3 and hexagonal Nd phases. The composite nanorods with the diameter of 50-150 nm and poly-crystalline structure are covered with the nanoparticles in the size of about 50 nm. Comparing with the BSCNRs, the band gap of the NdBSCNRs decreases to 3.34 eV increasing the light absorption ability. The NdBSCNRs exhibit enhanced photocatalytic performance towards gentian violet (GV) under ultraviolet (UV) light illumination owing to Nd modification. The photocatalytic activity of the NdBSCNRs is closely relative to the dosage of the composite nanorods and Nd content. The reaction rate constant k value of the NdBSCNRs for GV degradation increases obviously with the highest k value (0.037 min−1) which is 7.4 times of that (0.005 min−1) of the BSCNRs. Superoxide ion radicals, hydroxyl radicals and holes are the main reactive species, and the NdBSCNRs are stable and recoverable for the GV degradation.
{"title":"Nd modified BaSn oxide composite nanorods and their photocatalytic activity toward gentian violet","authors":"Qianmin Cong, Chenxu Feng, F. Tao, Jiong Zhou, Xiaoyu Wang, L. Pei","doi":"10.1680/jnaen.22.00049","DOIUrl":"https://doi.org/10.1680/jnaen.22.00049","url":null,"abstract":"Nd modified BaSn oxide composite nanorods (NdBSCNRs) with different Nd contents were synthesized by an in-situ photo-deposition process. The composite nanorods were characterized by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, solid diffuse reflectance spectrum, electrochemical impedance spectroscopy and photoluminescence spectra. The composite nanorods consist of monoclinic BaSn(OH)6, orthorhombic SnO2, monoclinic Ba(OH)2, cubic Nd2O3 and hexagonal Nd phases. The composite nanorods with the diameter of 50-150 nm and poly-crystalline structure are covered with the nanoparticles in the size of about 50 nm. Comparing with the BSCNRs, the band gap of the NdBSCNRs decreases to 3.34 eV increasing the light absorption ability. The NdBSCNRs exhibit enhanced photocatalytic performance towards gentian violet (GV) under ultraviolet (UV) light illumination owing to Nd modification. The photocatalytic activity of the NdBSCNRs is closely relative to the dosage of the composite nanorods and Nd content. The reaction rate constant k value of the NdBSCNRs for GV degradation increases obviously with the highest k value (0.037 min−1) which is 7.4 times of that (0.005 min−1) of the BSCNRs. Superoxide ion radicals, hydroxyl radicals and holes are the main reactive species, and the NdBSCNRs are stable and recoverable for the GV degradation.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47070844","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}
In order to meet the needs of ecological buildings, it is necessary to improve the speed of sewage treatment. Therefore, this study analyzed the impact of zinc oxide nanoparticles on the water supply and drainage of ecological buildings. In the experiment, zinc oxide nanoparticles were selected and the experimental environment was set up to study the treatment effect of nano particles on water supply and drainage wastewater. The experimental results show that: the application of ZnO nanoparticles in water supply and drainage can effectively remove trace elements in sewage and reduce the eutrophication of groundwater; zinc oxide nanoparticles can change the morphology of mold group in sewage and inhibit the growth of sewage. The application of ZnO nanoparticles in the water supply and drainage of ecological buildings can effectively improve the water purification rate and improve the recycling efficiency of water resources.
{"title":"The Role of ZnO Nanoparticles in Water Supply and Drainage of Ecological Buildings","authors":"Li-Gyu Song","doi":"10.1680/jnaen.21.00020","DOIUrl":"https://doi.org/10.1680/jnaen.21.00020","url":null,"abstract":"In order to meet the needs of ecological buildings, it is necessary to improve the speed of sewage treatment. Therefore, this study analyzed the impact of zinc oxide nanoparticles on the water supply and drainage of ecological buildings. In the experiment, zinc oxide nanoparticles were selected and the experimental environment was set up to study the treatment effect of nano particles on water supply and drainage wastewater. The experimental results show that: the application of ZnO nanoparticles in water supply and drainage can effectively remove trace elements in sewage and reduce the eutrophication of groundwater; zinc oxide nanoparticles can change the morphology of mold group in sewage and inhibit the growth of sewage. The application of ZnO nanoparticles in the water supply and drainage of ecological buildings can effectively improve the water purification rate and improve the recycling efficiency of water resources.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45098389","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}
Jie Yang, Yajun Wang, Biao Yang, C. Tian, Yang Liu, Lei Yang
Recently, solid oxide-ion conductors have been received considerable attention owing to their potential applications in solid oxide fuel cells, oxygen sensor, etc. An innovative solid oxide-ion conductor, Lanthanum-molybdenum oxide (La2Mo2O9), presents a reversible phase transformation around 580°C from a low-temperature form ɑ-La2Mo2O9 to a high-temperature form β-La2Mo2O9, leading to varying the ionic conductivity. This paper reviews the research progress of La2Mo2O9 and its doping systems, the structure and phase transition of the material, the conductivity of oxide-ion, ionic conductivity, and chemical stability of the material in reducing atmosphere and high temperature are discussed. The research progress of La2Mo2O9 electrolyte was reviewed from four aspects: structure, conduction mechanism, preparation method, conductivity and future prospect.
{"title":"Research progress of La2Mo2O9-based oxide-ion conductor electrolyte materials","authors":"Jie Yang, Yajun Wang, Biao Yang, C. Tian, Yang Liu, Lei Yang","doi":"10.1680/jnaen.21.00010","DOIUrl":"https://doi.org/10.1680/jnaen.21.00010","url":null,"abstract":"Recently, solid oxide-ion conductors have been received considerable attention owing to their potential applications in solid oxide fuel cells, oxygen sensor, etc. An innovative solid oxide-ion conductor, Lanthanum-molybdenum oxide (La2Mo2O9), presents a reversible phase transformation around 580°C from a low-temperature form ɑ-La2Mo2O9 to a high-temperature form β-La2Mo2O9, leading to varying the ionic conductivity. This paper reviews the research progress of La2Mo2O9 and its doping systems, the structure and phase transition of the material, the conductivity of oxide-ion, ionic conductivity, and chemical stability of the material in reducing atmosphere and high temperature are discussed. The research progress of La2Mo2O9 electrolyte was reviewed from four aspects: structure, conduction mechanism, preparation method, conductivity and future prospect.","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47092043","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}
M. Zheng, Yue-ping Li, Shuai Zhang, X. Peng, Hao Jin
{"title":"Sodium acetate-based hydrated salt for solar thermal storage","authors":"M. Zheng, Yue-ping Li, Shuai Zhang, X. Peng, Hao Jin","doi":"10.1680/jnaen.21.00005","DOIUrl":"https://doi.org/10.1680/jnaen.21.00005","url":null,"abstract":"","PeriodicalId":44365,"journal":{"name":"Nanomaterials and Energy","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46463996","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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