Pub Date : 2024-02-19DOI: 10.1177/02670836241231166
M. M. Gul, K. Ahmad, A. Thomas, Ibrahim Aa
The present work outlines the synthesis of e-beam deposited (Sn2Sb2S5)GO:FTO thin film. The surface and physicochemical characterization of the thinfilm was done through X-ray diffraction (XRD), X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray and UV-visible spectrophotometry. An orthorhombic phased Sn2Sb2S5-GO was confirmed by XRD with crystallite size of 16.9 nm. SEM morphology revealed homogenous distribution of grains and sheet-like structure of graphene oxide (GO) and a direct band gap of 2.9 eV. Moreover, electrical investigation presented (Sn2Sb2S5)GO:FTO as an excellent electrode material with 303 F g−1 specific capacitance. The photocatalytic degradation rates by the thinfilm for methyl red dye, pesticide and phenol were 70%, 94% and 54%. The dynamic properties of the investigated film present it as a propitious material for opto-electrical and remediation devices.
本研究概述了电子束沉积 (Sn2Sb2S5)GO:FTO 薄膜的合成。通过 X 射线衍射 (XRD)、X 射线光电子能谱、傅立叶变换红外光谱、扫描电子显微镜、能量色散 X 射线和紫外可见分光光度法对薄膜进行了表面和物理化学表征。X 射线衍射证实，Sn2Sb2S5-GO 呈正方晶相，晶粒大小为 16.9 纳米。扫描电镜形貌显示了均匀分布的晶粒和氧化石墨烯（GO）的片状结构，直接带隙为 2.9 eV。此外，电学研究表明，(Sn2Sb2S5)GO:FTO 是一种优异的电极材料，比电容为 303 F g-1。薄膜对甲基红染料、农药和苯酚的光催化降解率分别为 70%、94% 和 54%。所研究薄膜的动态特性使其成为光电和修复设备的理想材料。
{"title":"High-performance e-beam-deposited (Sn2Sb2S5)GO:FTO supercapacitor electrode and photocatalytic thinfilm for contaminants removal","authors":"M. M. Gul, K. Ahmad, A. Thomas, Ibrahim Aa","doi":"10.1177/02670836241231166","DOIUrl":"https://doi.org/10.1177/02670836241231166","url":null,"abstract":"The present work outlines the synthesis of e-beam deposited (Sn2Sb2S5)GO:FTO thin film. The surface and physicochemical characterization of the thinfilm was done through X-ray diffraction (XRD), X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray and UV-visible spectrophotometry. An orthorhombic phased Sn2Sb2S5-GO was confirmed by XRD with crystallite size of 16.9 nm. SEM morphology revealed homogenous distribution of grains and sheet-like structure of graphene oxide (GO) and a direct band gap of 2.9 eV. Moreover, electrical investigation presented (Sn2Sb2S5)GO:FTO as an excellent electrode material with 303 F g−1 specific capacitance. The photocatalytic degradation rates by the thinfilm for methyl red dye, pesticide and phenol were 70%, 94% and 54%. The dynamic properties of the investigated film present it as a propitious material for opto-electrical and remediation devices.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140451609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-01-01DOI: 10.1177/02670836231212615
N. Lamba, Ritu Raj, Poonam Singh
In this study, the flexural behaviour of high-strength concrete was tested with chopped carbon fibres that were 30 mm long and added in amounts of 0.2%, 0.4%, 0.6%, 0.8%, and 1%. Thirty-six prisms were evaluated experimentally for flexural strength at 28 days using an ultrasonic pulse velocity test and a flexural testing machine. X-ray diffraction and linear regression analysis were carried out to characterise crystalline material and linear correlation amongst different mixes. Increasing the number of carbon fibres in high-strength concrete led to unexpected and innovative findings, such as lower pulse velocities and improved flexural characteristics up to an optimum dosage point. In SEM images of chopped carbon fibres, debonding was the most prevalent cause of failure.
{"title":"Chopped carbon fibre reinforcement in high-strength concrete: Flexural characteristics","authors":"N. Lamba, Ritu Raj, Poonam Singh","doi":"10.1177/02670836231212615","DOIUrl":"https://doi.org/10.1177/02670836231212615","url":null,"abstract":"In this study, the flexural behaviour of high-strength concrete was tested with chopped carbon fibres that were 30 mm long and added in amounts of 0.2%, 0.4%, 0.6%, 0.8%, and 1%. Thirty-six prisms were evaluated experimentally for flexural strength at 28 days using an ultrasonic pulse velocity test and a flexural testing machine. X-ray diffraction and linear regression analysis were carried out to characterise crystalline material and linear correlation amongst different mixes. Increasing the number of carbon fibres in high-strength concrete led to unexpected and innovative findings, such as lower pulse velocities and improved flexural characteristics up to an optimum dosage point. In SEM images of chopped carbon fibres, debonding was the most prevalent cause of failure.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140516856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-01-01DOI: 10.1177/02670836231212611
Liu Yawei, Liqiang Gong, Dong Minqi, Zhengyang Chen, Tounan Jin, Wenhang Yin, Hanguang Fu
This article investigates the effect of N content on the microstructure, mechanical properties and wear resistance of hypereutectic high chromium cast iron (HHCCI). With the increase of N content, the primary carbides are obviously refined, the austenite content increases, and the dispersed granular Cr2N precipitates. After quenching at 1000 °C, secondary carbides are precipitated from the matrix, the matrix transforms into martensite + retained austenite. With the increase of N content, the corrosion resistance of HHCCI increases, and 0.3 wt.% N HHCCI shows the best corrosion resistance. With the increase of N content, the wear resistance of HHCCI increases. The wear resistance of HHCCI with 0.15 wt.% N is the best, which is 1.57 times that of HHCCI without N.
本文研究了氮含量对超共晶高铬铸铁（HHCCI）的显微组织、力学性能和耐磨性的影响。随着 N 含量的增加，一次碳化物明显细化，奥氏体含量增加，并析出分散的粒状 Cr2N。1000 °C 淬火后，二次碳化物从基体中析出，基体转变为马氏体+残余奥氏体。随着 N 含量的增加，HHCCI 的耐腐蚀性增强，0.3 wt.% N HHCCI 的耐腐蚀性最好。随着 N 含量的增加，HHCCI 的耐磨性也随之增加。含 0.15 wt.% N 的 HHCCI 的耐磨性最好，是不含 N 的 HHCCI 的 1.57 倍。
{"title":"Microstructure and properties of hypereutectic high chromium cast iron containing nitrogen","authors":"Liu Yawei, Liqiang Gong, Dong Minqi, Zhengyang Chen, Tounan Jin, Wenhang Yin, Hanguang Fu","doi":"10.1177/02670836231212611","DOIUrl":"https://doi.org/10.1177/02670836231212611","url":null,"abstract":"This article investigates the effect of N content on the microstructure, mechanical properties and wear resistance of hypereutectic high chromium cast iron (HHCCI). With the increase of N content, the primary carbides are obviously refined, the austenite content increases, and the dispersed granular Cr2N precipitates. After quenching at 1000 °C, secondary carbides are precipitated from the matrix, the matrix transforms into martensite + retained austenite. With the increase of N content, the corrosion resistance of HHCCI increases, and 0.3 wt.% N HHCCI shows the best corrosion resistance. With the increase of N content, the wear resistance of HHCCI increases. The wear resistance of HHCCI with 0.15 wt.% N is the best, which is 1.57 times that of HHCCI without N.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140518667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The effect of different relaxation time before online quenching on mechanical strength and toughness of high-strength medium-thickness martensitic steel plate was analysed in this work. Increasing the relaxation time from 15 s to 135 s resulted in an increase in the impact energy at −20 °C from 33 J to 148 J. However, the yield strength was decreased from 1050 MPa to 1002 MPa. Dislocation density and martensitic lath width are the main factors causing the strength change. Moreover, the dislocation density caused by deformation drops first sharply and then gently during the relaxation, resulting in an inverse trend of martensitic lath width. Additionally, there appears to be a linear relation between impact energy at −20 °C and dislocation density−1/2.
{"title":"Effect of relaxation before quenching on microstructure and properties of the steel","authors":"Jiaxin Shi, Wei Yu, Xiong Yang, Yide Wang, Baozhong Zhang","doi":"10.1177/02670836231212625","DOIUrl":"https://doi.org/10.1177/02670836231212625","url":null,"abstract":"The effect of different relaxation time before online quenching on mechanical strength and toughness of high-strength medium-thickness martensitic steel plate was analysed in this work. Increasing the relaxation time from 15 s to 135 s resulted in an increase in the impact energy at −20 °C from 33 J to 148 J. However, the yield strength was decreased from 1050 MPa to 1002 MPa. Dislocation density and martensitic lath width are the main factors causing the strength change. Moreover, the dislocation density caused by deformation drops first sharply and then gently during the relaxation, resulting in an inverse trend of martensitic lath width. Additionally, there appears to be a linear relation between impact energy at −20 °C and dislocation density−1/2.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140523480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-01-01DOI: 10.1177/02670836231212624
Huimin Zhu, Jun Zhang, Wenbo Cao
A nanostructured CeO2–Ni coating is prepared on a steel substrate via two-step electrodeposition. An oxide scale with a multi-layer structure of Cr2O3–(Mn,Cr)3O4–(Ni,Mn,Cr)3O4–NiO has developed on the coated steel after 1680 h of oxidation in air at 800 °C. CeO2 is uniformly distributed in the spinel and NiO layers. The synergistic effects originating from nanostructured CeO2 and NiO not only reduce the growth rate of Cr2O3 and suppress the outward diffusion of Cr, but also improve the electrical performance of the surface scale.
{"title":"Oxidation and electrical properties of nanostructured CeO2–Ni coating on solid oxide fuel cell interconnects","authors":"Huimin Zhu, Jun Zhang, Wenbo Cao","doi":"10.1177/02670836231212624","DOIUrl":"https://doi.org/10.1177/02670836231212624","url":null,"abstract":"A nanostructured CeO2–Ni coating is prepared on a steel substrate via two-step electrodeposition. An oxide scale with a multi-layer structure of Cr2O3–(Mn,Cr)3O4–(Ni,Mn,Cr)3O4–NiO has developed on the coated steel after 1680 h of oxidation in air at 800 °C. CeO2 is uniformly distributed in the spinel and NiO layers. The synergistic effects originating from nanostructured CeO2 and NiO not only reduce the growth rate of Cr2O3 and suppress the outward diffusion of Cr, but also improve the electrical performance of the surface scale.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140520668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2024-01-01DOI: 10.1177/02670836231212987
Huashen Liu, Youping Sun, Jiangmei He, Guojian Luo, Zhang Luo
The effects of Si content and solution heat treatment on the microstructure and damping properties of as-cast Mg–Si hypoeutectic alloys were investigated. Si has the capacity to refine grains of pure magnesium. The three contents of Mg–Si hypoeutectic alloys are all high-damping alloys. The damping value of the as-cast Mg–0.5 wt-%Si alloy was higher than that of the Mg–0.3 wt-%Si and Mg–0.8 wt-%Si alloys in the small strain amplitude area. Compared to the as-cast state, the solution heat-treated Mg–Si hypoeutectic alloys show an increase in damping values, which are close to each other for the three contents in the small strain amplitude area, and decrease with increasing Si content in the high strain amplitude area as in the as-cast state.
{"title":"Microstructure and damping properties of Mg–Si binary hypoeutectic alloys","authors":"Huashen Liu, Youping Sun, Jiangmei He, Guojian Luo, Zhang Luo","doi":"10.1177/02670836231212987","DOIUrl":"https://doi.org/10.1177/02670836231212987","url":null,"abstract":"The effects of Si content and solution heat treatment on the microstructure and damping properties of as-cast Mg–Si hypoeutectic alloys were investigated. Si has the capacity to refine grains of pure magnesium. The three contents of Mg–Si hypoeutectic alloys are all high-damping alloys. The damping value of the as-cast Mg–0.5 wt-%Si alloy was higher than that of the Mg–0.3 wt-%Si and Mg–0.8 wt-%Si alloys in the small strain amplitude area. Compared to the as-cast state, the solution heat-treated Mg–Si hypoeutectic alloys show an increase in damping values, which are close to each other for the three contents in the small strain amplitude area, and decrease with increasing Si content in the high strain amplitude area as in the as-cast state.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140520864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-10-03DOI: 10.1080/02670836.2023.2264127
{"title":"Statement of Retraction: Creep and mechanical properties of aluminium A356 composites reinforced with coated and un-coated MWCNTs fabricated using the stir casting method","authors":"","doi":"10.1080/02670836.2023.2264127","DOIUrl":"https://doi.org/10.1080/02670836.2023.2264127","url":null,"abstract":"","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135695795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-09-15DOI: 10.1080/02670836.2023.2257536
Li Gao, Mei-Ling Zhuang, Gong Zuo, Chuanzhi Sun
AbstractThe tensile test and low-cycle fatigue test of HTRB630 high-strength steel bars after high-temperature exposure were investigated. Based on the plastic strain energy density theory of mashing behaviours, the values of parameters K and n in the Ramberg–Osgood stress–strain relationship were obtained. The Coffin–Manson model was modified for further modelling of specimens exposed to different temperatures. A fitted formula for the relationship between the plastic strain energy density and fatigue life of HTRB630 high-strength steel bar specimens was established. The parameters obtained in this study can provide a reference for further investigation of the seismic performance of HTRB630 steel bars reinforced concrete structures after exposure to high temperatures.KEYWORDS: HTRB630 high-strength steel barshigh temperature exposurelow-cycle fatigue propertymashing behaviourmodified Coffin–Manson model AcknowledgementsThis research has been supported by China Scholarship Council; the Natural Science Research Project of Jiangsu Province Colleges and Universities (21KJD560002), China; Suqian Natural Science Foundation Project (K202012), China; Project funded by the research and innovation team of engineering structure seismic technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project (Z2020137), China; Research and Innovation Team Project of Suqian College (2021TD04), China; and the Fifth Provincial Research Funding Project of ‘333 High-level Talent Training’ in 2020 (BRA2020241), China; The Youth Fund Project of Suqian College (2023XQNA03).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Project funded by the Research And Innovation Team of Engineering Structure Seismic Technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project [grant number Z2020137]; the Natural Science Research Project of Jiangsu Province Colleges and Universities [grant number 21KJD560002]; The Youth Fund Project of Suqian College [grant number 2023XQNA03]; China Scholarship Council; Suqian Natural Science Foundation Project [grant number K202012]; the Fifth Provincial Research Funding Project of “333 High-level Talent Training” in 2020 [grant number BRA2020241]; Research and Innovation Team Project of Suqian College [grant number 2021TD04].
{"title":"Low-cycle fatigue mashing behaviours of HTRB630 high-strength steel exposed to high temperatures","authors":"Li Gao, Mei-Ling Zhuang, Gong Zuo, Chuanzhi Sun","doi":"10.1080/02670836.2023.2257536","DOIUrl":"https://doi.org/10.1080/02670836.2023.2257536","url":null,"abstract":"AbstractThe tensile test and low-cycle fatigue test of HTRB630 high-strength steel bars after high-temperature exposure were investigated. Based on the plastic strain energy density theory of mashing behaviours, the values of parameters K and n in the Ramberg–Osgood stress–strain relationship were obtained. The Coffin–Manson model was modified for further modelling of specimens exposed to different temperatures. A fitted formula for the relationship between the plastic strain energy density and fatigue life of HTRB630 high-strength steel bar specimens was established. The parameters obtained in this study can provide a reference for further investigation of the seismic performance of HTRB630 steel bars reinforced concrete structures after exposure to high temperatures.KEYWORDS: HTRB630 high-strength steel barshigh temperature exposurelow-cycle fatigue propertymashing behaviourmodified Coffin–Manson model AcknowledgementsThis research has been supported by China Scholarship Council; the Natural Science Research Project of Jiangsu Province Colleges and Universities (21KJD560002), China; Suqian Natural Science Foundation Project (K202012), China; Project funded by the research and innovation team of engineering structure seismic technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project (Z2020137), China; Research and Innovation Team Project of Suqian College (2021TD04), China; and the Fifth Provincial Research Funding Project of ‘333 High-level Talent Training’ in 2020 (BRA2020241), China; The Youth Fund Project of Suqian College (2023XQNA03).Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by Project funded by the Research And Innovation Team of Engineering Structure Seismic Technology of Suqian University in 2020, China; Suqian City Guiding Science and Technology Plan Project [grant number Z2020137]; the Natural Science Research Project of Jiangsu Province Colleges and Universities [grant number 21KJD560002]; The Youth Fund Project of Suqian College [grant number 2023XQNA03]; China Scholarship Council; Suqian Natural Science Foundation Project [grant number K202012]; the Fifth Provincial Research Funding Project of “333 High-level Talent Training” in 2020 [grant number BRA2020241]; Research and Innovation Team Project of Suqian College [grant number 2021TD04].","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135397238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-09-04DOI: 10.1080/02670836.2023.2253079
B. M. Nithin, A. G. Jineesh, N. Manikanda Prabu
Nanosized m-BiVO4 and Sr-doped derivatives were prepared by solid state reactions, to produce Bi1-xSrxVO4 (X = 0%, 4%, 8% & 12%). XRD and Raman investigations confirmed the formation of BiVO4 phase. 8% and 12% doped samples contained a small fraction of secondary t-BiVO4 phase. SEM images exhibited flat and irregular nanoparticles (64–70 nm). Estimated band gaps were in visible region (2.34–2.42 eV). The materials were used to photodegrade malachite green and BVO-12 showed maximum efficiency ˜ 88% in 180 min. The catalyst was stable and effective for three cycles. Radical scavenging experiments proved the role of holes and hydroxyl radicals. Polymer nanocomposite films made of EOC and photocatalyst were prepared. 0.15 g catalyst loaded film showed maximum activity and recyclability.
{"title":"Polymer nanocomposite films of Sr-doped BiVO4 for photodegradation of malachite green","authors":"B. M. Nithin, A. G. Jineesh, N. Manikanda Prabu","doi":"10.1080/02670836.2023.2253079","DOIUrl":"https://doi.org/10.1080/02670836.2023.2253079","url":null,"abstract":"Nanosized m-BiVO4 and Sr-doped derivatives were prepared by solid state reactions, to produce Bi1-xSrxVO4 (X = 0%, 4%, 8% & 12%). XRD and Raman investigations confirmed the formation of BiVO4 phase. 8% and 12% doped samples contained a small fraction of secondary t-BiVO4 phase. SEM images exhibited flat and irregular nanoparticles (64–70 nm). Estimated band gaps were in visible region (2.34–2.42 eV). The materials were used to photodegrade malachite green and BVO-12 showed maximum efficiency ˜ 88% in 180 min. The catalyst was stable and effective for three cycles. Radical scavenging experiments proved the role of holes and hydroxyl radicals. Polymer nanocomposite films made of EOC and photocatalyst were prepared. 0.15 g catalyst loaded film showed maximum activity and recyclability.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77253391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 : 2023-08-31DOI: 10.1080/02670836.2023.2245655
Shenghe Wang, Song Li, Qianqian Cui, Z. Wen, Juncai Sun
Interface engineering is an effective way to improve the electrochemical performance of electrode materials for LIBs. Point contact interfaces in composites are constructed by growing of Mn3O4 nanoparticles on the surface of acetylene black (AB). The prepared electrode materials exhibit excellent rate capability (355.7 mAh g−1 at 6.4 A g−1) and cycling stability (1386.7 mAh g−1 after 300 cycles at 1 A g−1). The presence of AB in the composite reduces the charge transfer resistance and improves the cycling stability of the electrode. Moreover, the interface between the composites increases the contribution of pseudocapacitance, which will facilitate the electrode kinetics. The construction of interfaces in the composites provides a promising perspective for the design of high-power density anode for LIBs. Highlights Construction of Mn3O4 nanoparticles on 0 D-AB spheres was proposed and synthesised by a facile and scalable strategy. The composite materials exhibit excellent electrochemical performance. The superior rate performance is mainly attributed to the interface effect of composite material.
{"title":"Constructing superior rate-performance manganese-based anode for lithium-ion batteries by tuning interface effect","authors":"Shenghe Wang, Song Li, Qianqian Cui, Z. Wen, Juncai Sun","doi":"10.1080/02670836.2023.2245655","DOIUrl":"https://doi.org/10.1080/02670836.2023.2245655","url":null,"abstract":"Interface engineering is an effective way to improve the electrochemical performance of electrode materials for LIBs. Point contact interfaces in composites are constructed by growing of Mn3O4 nanoparticles on the surface of acetylene black (AB). The prepared electrode materials exhibit excellent rate capability (355.7 mAh g−1 at 6.4 A g−1) and cycling stability (1386.7 mAh g−1 after 300 cycles at 1 A g−1). The presence of AB in the composite reduces the charge transfer resistance and improves the cycling stability of the electrode. Moreover, the interface between the composites increases the contribution of pseudocapacitance, which will facilitate the electrode kinetics. The construction of interfaces in the composites provides a promising perspective for the design of high-power density anode for LIBs. Highlights Construction of Mn3O4 nanoparticles on 0 D-AB spheres was proposed and synthesised by a facile and scalable strategy. The composite materials exhibit excellent electrochemical performance. The superior rate performance is mainly attributed to the interface effect of composite material.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74937383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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