Pub Date : 2023-08-11DOI: 10.1557/s43578-023-01128-0
Xuezheng Zhang, Wen-qiang Lu, Tijun Chen
To elevate strength–ductility synergy in aluminum matrix composites, we propose a strategy of forming multiscale and dual-structured (M&D) reinforcing particulates, which are composed of nano-/submicro-particulates with monolithic structure (< 2 μm) and micro-particulates with core–shell (CS) structure (> 2 μm), and explore the effects of particulate fraction on microstructure and tensile properties. The results show that an increase in M&D particulate fraction decreases the grain size of Al matrix due to impeding of particulates against disappearance of grain boundary, and the tensile strengths increase significantly while the elongation first increases and then decreases. Comparatively, the synthesized M&D particulates in this work exhibit a much better toughening effect than CS particulates or traditional monolithic ones. Corresponding strengthening and toughening mechanisms are discussed from the perspective of strength contribution calculation, post-deformed transmission and scanning electron microscopy observations. This work would provide references for conquering the low ductility of metal matrix composites and promotes their widespread application in industry.
{"title":"Elevating strength–ductility synergy in aluminum matrix composites by multiscale and dual-structured reinforcing particulates","authors":"Xuezheng Zhang, Wen-qiang Lu, Tijun Chen","doi":"10.1557/s43578-023-01128-0","DOIUrl":"https://doi.org/10.1557/s43578-023-01128-0","url":null,"abstract":"To elevate strength–ductility synergy in aluminum matrix composites, we propose a strategy of forming multiscale and dual-structured (M&D) reinforcing particulates, which are composed of nano-/submicro-particulates with monolithic structure (< 2 μm) and micro-particulates with core–shell (CS) structure (> 2 μm), and explore the effects of particulate fraction on microstructure and tensile properties. The results show that an increase in M&D particulate fraction decreases the grain size of Al matrix due to impeding of particulates against disappearance of grain boundary, and the tensile strengths increase significantly while the elongation first increases and then decreases. Comparatively, the synthesized M&D particulates in this work exhibit a much better toughening effect than CS particulates or traditional monolithic ones. Corresponding strengthening and toughening mechanisms are discussed from the perspective of strength contribution calculation, post-deformed transmission and scanning electron microscopy observations. This work would provide references for conquering the low ductility of metal matrix composites and promotes their widespread application in industry.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"71 1","pages":"4130 - 4143"},"PeriodicalIF":0.8,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86870386","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 : 2023-08-10DOI: 10.1557/s43578-023-01127-1
Guizhong Li, De-Jian Sun, Lin Guo, Jingshu Yuan, K. Gao, Zi-qi Jie, Yang Gao, L. Fan
Hot press (HP) technology is used to explore the feasibility of preparing small civil superalloy parts in this paper. Microstructure of the samples was characterized by optical microscopy, scanning electron microscopy, electron-probe microanalysis, and so on. The results show that when HPing temperature is 1080 °C, the tensile properties of the materials are best. Its ultimate tensile strength and elongation are 1414 ± 19 MPa and 31.1 ± 3.5%, respectively, values comparable to that of materials prepared by hot isostatic pressing (HIP). When HPing temperature is lower or higher than 1080 °C, the pore or prior particle boundaries (PPBs) are the main defects affecting superalloy tensile properties. The cracks are prone to initiate from pores or PPB precipitates, and propagate along particle boundaries, presenting lower tensile properties and inter-particle fracture predominately.
{"title":"Microstructure evolution and tensile behavior of hot pressed powder metallurgy superalloys","authors":"Guizhong Li, De-Jian Sun, Lin Guo, Jingshu Yuan, K. Gao, Zi-qi Jie, Yang Gao, L. Fan","doi":"10.1557/s43578-023-01127-1","DOIUrl":"https://doi.org/10.1557/s43578-023-01127-1","url":null,"abstract":"Hot press (HP) technology is used to explore the feasibility of preparing small civil superalloy parts in this paper. Microstructure of the samples was characterized by optical microscopy, scanning electron microscopy, electron-probe microanalysis, and so on. The results show that when HPing temperature is 1080 °C, the tensile properties of the materials are best. Its ultimate tensile strength and elongation are 1414 ± 19 MPa and 31.1 ± 3.5%, respectively, values comparable to that of materials prepared by hot isostatic pressing (HIP). When HPing temperature is lower or higher than 1080 °C, the pore or prior particle boundaries (PPBs) are the main defects affecting superalloy tensile properties. The cracks are prone to initiate from pores or PPB precipitates, and propagate along particle boundaries, presenting lower tensile properties and inter-particle fracture predominately.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"5 1","pages":"4118 - 4129"},"PeriodicalIF":0.8,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76413036","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}
Zhenhui Wang, P. Ji, G. Wang, Yandong Jia, H. Wang, X. An
Abstract CoCrFeMnNi high entropy alloy was prepared by selective laser melting as a function of processing parameters by adopting the single factor variable method. The influence of process parameters on the microstructure and mechanical properties was investigated in detail. The results show that the alloy maintained a single-phase fcc structure, the microstructure is anisotropic and shows the presence of a high density of dislocations accumulated and entangled inside the grains. The ductility has a significant influence on the level of porosity, which in turn depends on the process parameters. Especially with the variation of hatch spacing, the elongation at break differs by at most 20.9 %.
{"title":"Evolution of microstructure and properties of CoCrFeMnNi high entropy alloy fabricated by selective laser melting","authors":"Zhenhui Wang, P. Ji, G. Wang, Yandong Jia, H. Wang, X. An","doi":"10.1515/ijmr-2022-0139","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0139","url":null,"abstract":"Abstract CoCrFeMnNi high entropy alloy was prepared by selective laser melting as a function of processing parameters by adopting the single factor variable method. The influence of process parameters on the microstructure and mechanical properties was investigated in detail. The results show that the alloy maintained a single-phase fcc structure, the microstructure is anisotropic and shows the presence of a high density of dislocations accumulated and entangled inside the grains. The ductility has a significant influence on the level of porosity, which in turn depends on the process parameters. Especially with the variation of hatch spacing, the elongation at break differs by at most 20.9 %.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"36 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85058169","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}
K. Ujjwal, M. Anand, Harish Bishwakarma, Alokekumar Das
Abstract The distortion of components printed by wire arc additive manufacturing (WAAM) due to repeated thermal cycles affects the build quality. The residual stress generated due to these thermal cycles can be predicted with the help of the finite element method. The temperature distribution and residual stresses in the WAAM component are predicted using a numerical model presented in this paper. Also, the effect of clamping position on the substrate is investigated. For this, two different clamping positions are compared with the unclamped state. The residual stress is minimum for the unclamped case and has maximum strain. The case where the substrate is clamped at the centre generates 77 % more tensile stress when compared with the corner clamped case.
{"title":"Effect of clamping position on the residual stress in wire arc additive manufacturing","authors":"K. Ujjwal, M. Anand, Harish Bishwakarma, Alokekumar Das","doi":"10.1515/ijmr-2022-0249","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0249","url":null,"abstract":"Abstract The distortion of components printed by wire arc additive manufacturing (WAAM) due to repeated thermal cycles affects the build quality. The residual stress generated due to these thermal cycles can be predicted with the help of the finite element method. The temperature distribution and residual stresses in the WAAM component are predicted using a numerical model presented in this paper. Also, the effect of clamping position on the substrate is investigated. For this, two different clamping positions are compared with the unclamped state. The residual stress is minimum for the unclamped case and has maximum strain. The case where the substrate is clamped at the centre generates 77 % more tensile stress when compared with the corner clamped case.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"23 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87706308","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}
Abstract Motivated by the beneficial effects of friction stir processing (FSP) for microstructural grain refinement, equiaxed grain production, and minimizing metallurgical defects, additive bead (AB) produced by the gas metal arc welding-wire arc additive manufacturing (GMAW-WAAM) technique was subjected to FSP. This was because deposited additive bead often develops defects such as shrinkage, voids, solidification cracking, during liquid to solid transformation. In this study, a low carbon steel double pass additive bead with 32 % lateral overlap was fabricated by the GMAW-WAAM technique followed by hybridization through FSP in the overlapped region (OR). The peak temperature estimation during bead deposition and FSP on bead was done through modeling by using ABAQUS. The microstructural analysis was carried out by using optical microscopy, scanning electron microscopy, electron backscattered diffraction, and transmission electron microscopy. The microstructure of OR of deposited additive bead is dominated by a combination of ferrite and bainite while that of hybrid additive bead (HAB) is dominated by a combination of ferrite and martensite. Further, the analysis revealed the effects of FSP on the OR in the form of grain refinement from 5.56 µm to 3.50 µm and a decrease in the low angle grain boundaries from 35.4 % to 10.6 %. The continuous dynamic recrystallization is observed since the bainitic fraction in the overlapped region decreased along with an increase in the fraction of martensite in the friction stir processed zone. The kernel average misorientation is observed to decrease after FSP from 1.001 of AB to 0.608. The microhardness test reveals the decrease in the hardness after FSP.
{"title":"Investigation of microstructural evolution in a hybrid additively manufactured steel bead","authors":"Md. Anwar Ali Anshari, Rajnish Mishra, M. Imam","doi":"10.1515/ijmr-2022-0152","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0152","url":null,"abstract":"Abstract Motivated by the beneficial effects of friction stir processing (FSP) for microstructural grain refinement, equiaxed grain production, and minimizing metallurgical defects, additive bead (AB) produced by the gas metal arc welding-wire arc additive manufacturing (GMAW-WAAM) technique was subjected to FSP. This was because deposited additive bead often develops defects such as shrinkage, voids, solidification cracking, during liquid to solid transformation. In this study, a low carbon steel double pass additive bead with 32 % lateral overlap was fabricated by the GMAW-WAAM technique followed by hybridization through FSP in the overlapped region (OR). The peak temperature estimation during bead deposition and FSP on bead was done through modeling by using ABAQUS. The microstructural analysis was carried out by using optical microscopy, scanning electron microscopy, electron backscattered diffraction, and transmission electron microscopy. The microstructure of OR of deposited additive bead is dominated by a combination of ferrite and bainite while that of hybrid additive bead (HAB) is dominated by a combination of ferrite and martensite. Further, the analysis revealed the effects of FSP on the OR in the form of grain refinement from 5.56 µm to 3.50 µm and a decrease in the low angle grain boundaries from 35.4 % to 10.6 %. The continuous dynamic recrystallization is observed since the bainitic fraction in the overlapped region decreased along with an increase in the fraction of martensite in the friction stir processed zone. The kernel average misorientation is observed to decrease after FSP from 1.001 of AB to 0.608. The microhardness test reveals the decrease in the hardness after FSP.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"6 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78711721","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 : 2023-08-07DOI: 10.1557/s43578-023-01111-9
Markus R. Schoof, S. Karimi Aghda, C. Kusche, M. Hans, Jürgen Schneider, S. Korte-Kerzel, J. Gibson
Since protective transition metal (oxy)nitride coatings are widely used, understanding of the mechanisms linking microstructure to their fracture behaviour is required to optimise wear resistance, while maintaining fracture toughness. To assess this interconnection, beam bending was performed using microcantilevers oriented parallel and at 90° to the growth direction. Furthermore, the tests were applied to favour normal bending and shear fracture. Coatings were synthesised by both direct current magnetron sputtering (DCMS) as well as high power pulsed magnetron sputtering (HPPMS). Here, we show that the fracture toughness depends on the alignment of the grains and loading directions. Furthermore, an improved fracture toughness was found in coatings produced by HPPMS, when microstructural defects, such as underdense regions in DCMS deposited coatings can be excluded. We propose indices based on fracture and mechanical properties to rank those coatings. Here, the HPPMS deposited oxynitride showed the best combination of mechanical properties and fracture toughness. Principle of measuring the effects of microstructure and process route on the fracture toughness via microcantilever bending.
{"title":"The influence of microstructural orientation on fracture toughness in (V, Al)N and (V, Al)(O, N) coatings as measured by microcantilever bending","authors":"Markus R. Schoof, S. Karimi Aghda, C. Kusche, M. Hans, Jürgen Schneider, S. Korte-Kerzel, J. Gibson","doi":"10.1557/s43578-023-01111-9","DOIUrl":"https://doi.org/10.1557/s43578-023-01111-9","url":null,"abstract":"Since protective transition metal (oxy)nitride coatings are widely used, understanding of the mechanisms linking microstructure to their fracture behaviour is required to optimise wear resistance, while maintaining fracture toughness. To assess this interconnection, beam bending was performed using microcantilevers oriented parallel and at 90° to the growth direction. Furthermore, the tests were applied to favour normal bending and shear fracture. Coatings were synthesised by both direct current magnetron sputtering (DCMS) as well as high power pulsed magnetron sputtering (HPPMS). Here, we show that the fracture toughness depends on the alignment of the grains and loading directions. Furthermore, an improved fracture toughness was found in coatings produced by HPPMS, when microstructural defects, such as underdense regions in DCMS deposited coatings can be excluded. We propose indices based on fracture and mechanical properties to rank those coatings. Here, the HPPMS deposited oxynitride showed the best combination of mechanical properties and fracture toughness. Principle of measuring the effects of microstructure and process route on the fracture toughness via microcantilever bending.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"41 1","pages":"3950 - 3965"},"PeriodicalIF":0.8,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83023490","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 : 2023-08-04DOI: 10.1557/s43578-023-01114-6
S. K. Kucko, T. Keenan
Cu inclusion in hydroxyapatite (HA) can provide newfound advantages. Still, fundamental properties of these materials are understudied. Motivated by this, a series of Cu-containing HA (CuHA) was synthesized via aqueous co-precipitation. Pawley fitting of X-ray powder diffraction (XRD) patterns revealed a dilation of lattice parameters with increasing Cu content, causing a maximum expansion of unit cell volume from 518.2(7) to 528.0(4) Å3. Functional group presence and stoichiometry were investigated using spectroscopic characterization and X-ray fluorescence (XRF), respectively. High-temperature in-situ XRD followed by quantitative phase identification assessed the thermal transition to β-tricalcium phosphate (β-TCP). As Cu target incorporation increased from 0 to 5 mol% (actual 0–1.96 mol%), there was an observable increase in stoichiometry, carbonate removal, and resistance to thermal phase transition. This work also emphasizes the tunability of certain properties through Ca deprivation in the synthesis method. Some key structure–property relationships are identified to build on current understanding of CuHA and its complexities.
{"title":"Effect of copper inclusion on lattice parameters, stoichiometry, and thermal phase transition of hydroxyapatite","authors":"S. K. Kucko, T. Keenan","doi":"10.1557/s43578-023-01114-6","DOIUrl":"https://doi.org/10.1557/s43578-023-01114-6","url":null,"abstract":"Cu inclusion in hydroxyapatite (HA) can provide newfound advantages. Still, fundamental properties of these materials are understudied. Motivated by this, a series of Cu-containing HA (CuHA) was synthesized via aqueous co-precipitation. Pawley fitting of X-ray powder diffraction (XRD) patterns revealed a dilation of lattice parameters with increasing Cu content, causing a maximum expansion of unit cell volume from 518.2(7) to 528.0(4) Å3. Functional group presence and stoichiometry were investigated using spectroscopic characterization and X-ray fluorescence (XRF), respectively. High-temperature in-situ XRD followed by quantitative phase identification assessed the thermal transition to β-tricalcium phosphate (β-TCP). As Cu target incorporation increased from 0 to 5 mol% (actual 0–1.96 mol%), there was an observable increase in stoichiometry, carbonate removal, and resistance to thermal phase transition. This work also emphasizes the tunability of certain properties through Ca deprivation in the synthesis method. Some key structure–property relationships are identified to build on current understanding of CuHA and its complexities.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"29 1","pages":"3966 - 3979"},"PeriodicalIF":0.8,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75116341","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 : 2023-08-04DOI: 10.1557/s43578-023-01121-7
Suvendu K. Barik, Abhiram Senapati, S. Balakrishnan, K. Ananthasivan
The effects of lanthanides addition (Ce, Pr, Nd and Gd) to aluminium phosphate glass on its thermal properties were systematically studied. It was observed that the temperature of the glass transition gets enhanced due to the increase in the rigidity of the network upon doping. The fragility index values (m = 22–40) of lanthanide-doped glasses indicated their strong glass-forming ability. The specific heat capacity values showed a monotonous variation with the lanthanide content. Ce- and Pr-doped glasses showed maxima in heat capacity at 5 wt% and minima at 10 wt% doping, whereas Nd- and Gd-doped glasses showed maxima at 3 wt% and minima at 10 wt% doping. The DSC curve of the 10 wt% lanthanide-doped glasses showed exothermic peaks in the range 913–920 K, is due to the formation of a monazite phase. The FTIR spectra of the γ-irradiated glass specimens evidenced the structural stability of these glasses.
{"title":"An assessment of thermal behaviour and gamma radiation stability of lanthanide-doped aluminium phosphate glasses for immobilization of minor actinides","authors":"Suvendu K. Barik, Abhiram Senapati, S. Balakrishnan, K. Ananthasivan","doi":"10.1557/s43578-023-01121-7","DOIUrl":"https://doi.org/10.1557/s43578-023-01121-7","url":null,"abstract":"The effects of lanthanides addition (Ce, Pr, Nd and Gd) to aluminium phosphate glass on its thermal properties were systematically studied. It was observed that the temperature of the glass transition gets enhanced due to the increase in the rigidity of the network upon doping. The fragility index values (m = 22–40) of lanthanide-doped glasses indicated their strong glass-forming ability. The specific heat capacity values showed a monotonous variation with the lanthanide content. Ce- and Pr-doped glasses showed maxima in heat capacity at 5 wt% and minima at 10 wt% doping, whereas Nd- and Gd-doped glasses showed maxima at 3 wt% and minima at 10 wt% doping. The DSC curve of the 10 wt% lanthanide-doped glasses showed exothermic peaks in the range 913–920 K, is due to the formation of a monazite phase. The FTIR spectra of the γ-irradiated glass specimens evidenced the structural stability of these glasses.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"55 1","pages":"4093 - 4106"},"PeriodicalIF":0.8,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91378161","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 : 2023-08-04DOI: 10.1557/s43578-023-01120-8
Tien-Dung Nguyen-Dinh, Nhu-Thuan Nguyen-Phuoc, Ngoc Thuy Trang Le, N. H. Nguyen, D. Nguyen
This study aimed to prepared a dual-stimuli-responsive delivery system based on iron oxide nanoparticles (IONPs) and Pluronic F127—Folic acid conjugation (F127-FA) for poorly water-soluble drugs. Oleic acid-coated IONPs were prepared and modified with F127-FA using ultrasonic treatment to form IONPs/F127-FA meanwhile Quercetin (QCT)—a poorly water-soluble drug was encapsulated into the nano-system. The results illustrated the successful preparation of IONPs/F127-FA and its saturation magnetization value was found to be 25.6 emu/g. Moreover, QCT was effectively entrapped into the synthesized IONPs/F127-FA and showed 23.45 ± 7.23% loading capacity and 89.87 ± 2.05% entrapment efficiency. Additionally, the MTT assay revealed that loaded QCT in IONPs/F127-FA showed high inhibition against the human breast cancer cells compared to the free one, which was attributed to the ability to bind to folate receptor α of IONPs/F127-FA. These results suggested that the IONPs/F127-FA system would be a promising dual-stimuli-responsive drug delivery system in cancer treatment.
{"title":"A dual-stimuli-responsive delivery system for poorly water-soluble drug based on iron oxide nanoparticles","authors":"Tien-Dung Nguyen-Dinh, Nhu-Thuan Nguyen-Phuoc, Ngoc Thuy Trang Le, N. H. Nguyen, D. Nguyen","doi":"10.1557/s43578-023-01120-8","DOIUrl":"https://doi.org/10.1557/s43578-023-01120-8","url":null,"abstract":"This study aimed to prepared a dual-stimuli-responsive delivery system based on iron oxide nanoparticles (IONPs) and Pluronic F127—Folic acid conjugation (F127-FA) for poorly water-soluble drugs. Oleic acid-coated IONPs were prepared and modified with F127-FA using ultrasonic treatment to form IONPs/F127-FA meanwhile Quercetin (QCT)—a poorly water-soluble drug was encapsulated into the nano-system. The results illustrated the successful preparation of IONPs/F127-FA and its saturation magnetization value was found to be 25.6 emu/g. Moreover, QCT was effectively entrapped into the synthesized IONPs/F127-FA and showed 23.45 ± 7.23% loading capacity and 89.87 ± 2.05% entrapment efficiency. Additionally, the MTT assay revealed that loaded QCT in IONPs/F127-FA showed high inhibition against the human breast cancer cells compared to the free one, which was attributed to the ability to bind to folate receptor α of IONPs/F127-FA. These results suggested that the IONPs/F127-FA system would be a promising dual-stimuli-responsive drug delivery system in cancer treatment.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"44 1","pages":"4057 - 4067"},"PeriodicalIF":0.8,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78962929","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 : 2023-08-04DOI: 10.1557/s43578-023-01117-3
M. M. Gul, K. Ahmad, Yasser T. Alharbi, A. Thomas, Suliman A. Alderhami, Laila Almanqur
This study focuses on Er2S3:Al2S3:NiS2 thin films using diethyldithiocarbamate. The thin films exhibited a crystallite size of 37 nm, with geometrically shaped, small clustered bodies. XPS analysis confirmed the presence of core level peaks corresponding to Er4d, Al2p, Ni2p, and S2p in the material and band gap energy of 2.7 eV. Electrochemical testing using cyclic voltammetry revealed excellent performance with specific capacitance of 879 Fg−1. The thin films also exhibited satisfactory cycle stability, indicating their potential as energy storage media. Additionally, the photocatalytic activity of the material was evaluated for the degradation of various pollutants including malachite green dye, pesticide fluopyram, and phenol with 70% degradation against fluopyram with 2.03 × 10–2 min−1 rate constant. Successive cycles also presented an impressive degradation by the thin films. These findings highlight the promising potential of ternary metal sulphide thin films for diverse technological applications such as energy storage and photocatalysis.
{"title":"Exploring the dual functionality of Er2S3:Al2S3:NiS2 thin film as supercapacitor electrode and photocatalyst for efficient energy storage and pollutant degradation","authors":"M. M. Gul, K. Ahmad, Yasser T. Alharbi, A. Thomas, Suliman A. Alderhami, Laila Almanqur","doi":"10.1557/s43578-023-01117-3","DOIUrl":"https://doi.org/10.1557/s43578-023-01117-3","url":null,"abstract":"This study focuses on Er2S3:Al2S3:NiS2 thin films using diethyldithiocarbamate. The thin films exhibited a crystallite size of 37 nm, with geometrically shaped, small clustered bodies. XPS analysis confirmed the presence of core level peaks corresponding to Er4d, Al2p, Ni2p, and S2p in the material and band gap energy of 2.7 eV. Electrochemical testing using cyclic voltammetry revealed excellent performance with specific capacitance of 879 Fg−1. The thin films also exhibited satisfactory cycle stability, indicating their potential as energy storage media. Additionally, the photocatalytic activity of the material was evaluated for the degradation of various pollutants including malachite green dye, pesticide fluopyram, and phenol with 70% degradation against fluopyram with 2.03 × 10–2 min−1 rate constant. Successive cycles also presented an impressive degradation by the thin films. These findings highlight the promising potential of ternary metal sulphide thin films for diverse technological applications such as energy storage and photocatalysis.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"32 1","pages":"3995 - 4008"},"PeriodicalIF":0.8,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86633366","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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