M. M. Abdullah, Hasan B. Albargi, JariS. Algethami, Shashank Sharma, Mohammad Luqman, Jawed Mustafa
The study presents a PVC membrane-based potentiometric sensor for iron (III) detection, demonstrating impressive selectivity in Fe(III) ion-selective electrodes (ISE). The sensor achieves a detection limit of 4.0×10−7 M and a Nernstian response slope of 19.4 mV per decade change within a concentration range of 7.4×10−7 to 1×10−1 M. Operating efficiently within the pH range of 3.6–10, the sensor maintains its potential divergence-free utility for at least eight weeks and has a rapid response time of approximately twenty seconds. The sensor’s selectivity for Fe3+ ions makes it a robust tool for specific Fe(III) ion detection. The sensor’s reliability and longevity make it a valuable tool for continuous monitoring applications, providing accurate and timely information on the presence of iron ions in diverse settings.
{"title":"Experimental Approaches to Iron Determination in Potentiometric Sensors Using (2-2-(4-Dinitrophenyl) Hydrazono) Methylphenol","authors":"M. M. Abdullah, Hasan B. Albargi, JariS. Algethami, Shashank Sharma, Mohammad Luqman, Jawed Mustafa","doi":"10.1166/sam.2024.4657","DOIUrl":"https://doi.org/10.1166/sam.2024.4657","url":null,"abstract":"The study presents a PVC membrane-based potentiometric sensor for iron (III) detection, demonstrating impressive selectivity in Fe(III) ion-selective electrodes (ISE). The sensor achieves a detection limit of 4.0×10−7 M and a Nernstian response slope of 19.4 mV\u0000 per decade change within a concentration range of 7.4×10−7 to 1×10−1 M. Operating efficiently within the pH range of 3.6–10, the sensor maintains its potential divergence-free utility for at least eight weeks and has a rapid response time\u0000 of approximately twenty seconds. The sensor’s selectivity for Fe3+ ions makes it a robust tool for specific Fe(III) ion detection. The sensor’s reliability and longevity make it a valuable tool for continuous monitoring applications, providing accurate and timely information\u0000 on the presence of iron ions in diverse settings.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141229843","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}
Contemporary surface conditioners (Sandblasting (SB), Self-etching ceramic primer (SECP), low-level laser therapy (LLLT) in conjunction with methylene blue photosensitizer (MBPS), Carbon dioxide (CO2) laser on the color change (ΔE), surface roughness (Ra) and bond strength of hybrid ceramic (HC) to resin cement. Hundred discs were prepared from HC which were surface treated (n = 15) Group 1: HFA(S), Group 2: SB, Group 3: SECP, Group 4: LLLT (MBPS), Group 5: CO2 laser. After surface conditioning, five samples from each group underwent ΔE and Ra analysis using a spectrophotometer and Profilometer respectively. Fifty specimens were applied with dual-cure resin luting cement. Specimens were thermocycled and underwent SBS and failure mode analysis using UTM and stereomicroscope. The mean and standard deviation (SD) of ΔE, Ra, and SBS were calculated using ANOVA. Intergroup comparisons were made using post hoc Tukey multiple comparisons. A maximum score of ΔE was observed in Group 5 samples (CO2 laser+HC). The minimum value of ΔE was displayed by Group 3 (SECP+HC) specimens. Group 2 (SB+HC) treated specimens that exhibited the highest Ra scores and SBS. Sandblasting and carbon dioxide laser-treated samples presented satisfactory outcomes of surface roughness and bond strength. However, Sandblasting and carbon dioxide laser groups presented significant changes in the color of the specimens.
{"title":"Effect of Polymer Infiltered Ceramic Surface Treatment Using Photoactivated Low-Level Laser Therapy, CO2 Laser, and Aluminum Oxide on Surface Roughness, Shear Bond Strength, and Color Change: An In vitro SEM EDX Analysis","authors":"Saeed Awod Bin Hassan","doi":"10.1166/sam.2024.4674","DOIUrl":"https://doi.org/10.1166/sam.2024.4674","url":null,"abstract":"Contemporary surface conditioners (Sandblasting (SB), Self-etching ceramic primer (SECP), low-level laser therapy (LLLT) in conjunction with methylene blue photosensitizer (MBPS), Carbon dioxide (CO2) laser on the color change (ΔE), surface roughness (Ra) and\u0000 bond strength of hybrid ceramic (HC) to resin cement. Hundred discs were prepared from HC which were surface treated (n = 15) Group 1: HFA(S), Group 2: SB, Group 3: SECP, Group 4: LLLT (MBPS), Group 5: CO2 laser. After surface conditioning, five samples from each group underwent\u0000 ΔE and Ra analysis using a spectrophotometer and Profilometer respectively. Fifty specimens were applied with dual-cure resin luting cement. Specimens were thermocycled and underwent SBS and failure mode analysis using UTM and stereomicroscope. The mean and standard deviation (SD) of\u0000 ΔE, Ra, and SBS were calculated using ANOVA. Intergroup comparisons were made using post hoc Tukey multiple comparisons. A maximum score of ΔE was observed in Group 5 samples (CO2 laser+HC). The minimum value of ΔE was displayed by Group 3 (SECP+HC) specimens.\u0000 Group 2 (SB+HC) treated specimens that exhibited the highest Ra scores and SBS. Sandblasting and carbon dioxide laser-treated samples presented satisfactory outcomes of surface roughness and bond strength. However, Sandblasting and carbon dioxide laser groups presented significant changes\u0000 in the color of the specimens.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141232369","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}
Zhen-Wei Wei, Li Ma, Bin Hu, Mei-Jing Dong, Quan-Feng Xiao, Zhen Li, Chang-Kui Liu
The duration of the parking time between quenching and artificial aging can affect the final mechanical and corrosion properties of the material after artificial aging, etc. At present, there are fewer studies on the parking time before artificial aging, and this paper investigates the influence of the parking time before artificial aging on the microstructure and properties of 7050 aluminum alloy. The results show that: with the prolongation of the parking time, the proportion of HAGBs of the alloy is gradually increased through EBSD analysis, the dislocations are mainly concentrated in HAGBs and areas with dense GBs, the precipitated phase of the alloy continuously precipitates and grows at the GBs, the alloy’s hardness shows a trend of stabilization and then decreasing, and the corrosion resistance is stabilized and then deteriorated quickly with the prolongation of the parking time. The alloy has stabilized comprehensive performance when the storage time does not exceed 6 h, with microhardness of 132.2 HV, the Ecorr of −0.991 V and −1.007 V, the Icorr of 6.14×10−8 A·cm−2 and 4.16×10−7 A·cm−2.
{"title":"Effect of Parking Time on the Microstructure and Properties of 7050 Aluminum Alloy","authors":"Zhen-Wei Wei, Li Ma, Bin Hu, Mei-Jing Dong, Quan-Feng Xiao, Zhen Li, Chang-Kui Liu","doi":"10.1166/sam.2024.4680","DOIUrl":"https://doi.org/10.1166/sam.2024.4680","url":null,"abstract":"The duration of the parking time between quenching and artificial aging can affect the final mechanical and corrosion properties of the material after artificial aging, etc. At present, there are fewer studies on the parking time before artificial aging, and this paper investigates\u0000 the influence of the parking time before artificial aging on the microstructure and properties of 7050 aluminum alloy. The results show that: with the prolongation of the parking time, the proportion of HAGBs of the alloy is gradually increased through EBSD analysis, the dislocations are mainly\u0000 concentrated in HAGBs and areas with dense GBs, the precipitated phase of the alloy continuously precipitates and grows at the GBs, the alloy’s hardness shows a trend of stabilization and then decreasing, and the corrosion resistance is stabilized and then deteriorated quickly with the\u0000 prolongation of the parking time. The alloy has stabilized comprehensive performance when the storage time does not exceed 6 h, with microhardness of 132.2 HV, the Ecorr of −0.991 V and −1.007 V, the Icorr of 6.14×10−8 A·cm−2 and 4.16×10−7\u0000 A·cm−2.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141233752","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 Fe–Ni–Cu–Mo–C powder metallurgy sintered steels with TiB2 reinforced were prepared by the conventional powder metallurgy techniques. This study explored the influence of incremental TiB2 additions, ranging from 0.1 to 0.6 wt.%, on the microstructure and properties of these steels. The results reveal that the microstructures primarily consist of martensite, Ni-rich austenite, Cu-rich pearlite, TiB2, and Ti–O rich nanoparticles. The latter form via a reaction between TiB2 and free oxygen. Notably, both the density and impact strength of the steels showed enhancement with increasing TiB2 content. The optimal values, 7.25 g/cm3 for density and 17.23 J/cm2 for impact strength, were observed at a TiB2 concentration of 0.5%. The hardness and ultimate tensile strength also increased steadily, reaching maxima of 38.7 and 1083.7 MPa at 0.6% TiB2, respectively. However, excessive TiB2 led to the formation of a net-like B-containing eutectic network, adversely affecting the steel properties. Steels with 0.5% TiB2 exhibited excellent wear resistance. At 200 rpm, the dominant failure mode was abrasive wear, which shifted to adhesive wear with oxidation at 400 rpm, followed by abrasive wear.
{"title":"Optimizing the Microstructure and Properties of Fe–Ni–Cu–Mo–C Sintered Steel by TiB2","authors":"Zenglin Liu, Yankang Wang, Weilong Lu, Feng Liu, Wei Han, Wuqiang He","doi":"10.1166/sam.2024.4669","DOIUrl":"https://doi.org/10.1166/sam.2024.4669","url":null,"abstract":"The Fe–Ni–Cu–Mo–C powder metallurgy sintered steels with TiB2 reinforced were prepared by the conventional powder metallurgy techniques. This study explored the influence of incremental TiB2 additions, ranging from 0.1 to 0.6 wt.%, on the\u0000 microstructure and properties of these steels. The results reveal that the microstructures primarily consist of martensite, Ni-rich austenite, Cu-rich pearlite, TiB2, and Ti–O rich nanoparticles. The latter form via a reaction between TiB2 and free oxygen. Notably,\u0000 both the density and impact strength of the steels showed enhancement with increasing TiB2 content. The optimal values, 7.25 g/cm3 for density and 17.23 J/cm2 for impact strength, were observed at a TiB2 concentration of 0.5%. The hardness and ultimate\u0000 tensile strength also increased steadily, reaching maxima of 38.7 and 1083.7 MPa at 0.6% TiB2, respectively. However, excessive TiB2 led to the formation of a net-like B-containing eutectic network, adversely affecting the steel properties. Steels with 0.5% TiB2\u0000 exhibited excellent wear resistance. At 200 rpm, the dominant failure mode was abrasive wear, which shifted to adhesive wear with oxidation at 400 rpm, followed by abrasive wear.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141234207","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}
Lanthanide-doped upconversion (Ln-doped UC) materials with predicable phase and geometry are attractive for their promising application in optics and biological. Herein, we report a facile strategy for deterministic synthesis of β-NaYF4 microcrystals by an ethylenediaminetetraacetic acid (EDTA) assisted hydrothermal process. The nucleation and growth process of the β-NaYF4 microcrystals have been experimentally revealed with different hydrothermal times. The phase and geometry of as-obtained crystals can be well manipulated by the experimental parameters such as pH values, precursors’ ratio, and reactant concentrations. The formation and morphology evolution mechanism of β-NaYF4 single microcrystals can be qualitatively analyzed using energy minimization principles under the thermodynamic and kinetic control. In addition, we presented the colour-changing up-conversion of Tm3+ and Yb3+ doped single β-NaYF4 microrod. Our work could help the understanding on crystal growth and design of rare earth fluoride mateirals at micro and nanoscale.
{"title":"Formation Mechanism and Morphology Evolution of β-NaYF4 Single Microcrystals in Hydrothermal Process","authors":"Bin-yu Wang, Kai-xin Yang, Jiang-liang Hu, Liping Chang, Jian-cheng Wang, Bing Wang","doi":"10.1166/sam.2024.4682","DOIUrl":"https://doi.org/10.1166/sam.2024.4682","url":null,"abstract":"Lanthanide-doped upconversion (Ln-doped UC) materials with predicable phase and geometry are attractive for their promising application in optics and biological. Herein, we report a facile strategy for deterministic synthesis of β-NaYF4 microcrystals by an ethylenediaminetetraacetic\u0000 acid (EDTA) assisted hydrothermal process. The nucleation and growth process of the β-NaYF4 microcrystals have been experimentally revealed with different hydrothermal times. The phase and geometry of as-obtained crystals can be well manipulated by the experimental parameters\u0000 such as pH values, precursors’ ratio, and reactant concentrations. The formation and morphology evolution mechanism of β-NaYF4 single microcrystals can be qualitatively analyzed using energy minimization principles under the thermodynamic and kinetic control. In\u0000 addition, we presented the colour-changing up-conversion of Tm3+ and Yb3+ doped single β-NaYF4 microrod. Our work could help the understanding on crystal growth and design of rare earth fluoride mateirals at micro and nanoscale.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141230592","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}
Shi-peng Xu, Yue-hong Zheng, Fa-qi Zhan, Pei-qing La
The chloride-infused molten salt shows the most potential as the medium for the upcoming generation of concentrated solar power system. However, the molten salt put for ward higher corrosion resistance demand on the critical components of concentrated solar power system. The application of NiAl coating proves to be a highly efficient method for preventing corrosion. In this paper, the microstructure, adhesion, and corrosion resistance of NiAl coatings on 310S stainless steel with/without pre-oxidation treatment were studied. The coating predominantly consisted of β-NiAl phase nanocrystals with an Al content of 41.0 at.%. Continuous α-Al2O3 oxide film was formed and no obvious cracks were observed after pre-oxidation. The adhesion strength of NiAl coating was increased by about 70% to 40.0 N through pre-oxidation. Importantly, the corrosion results of NiAl coatings by pre-oxidation treatment in the mixed salt of NaCl/MgCl2/KCl at 1073.15 K for 10 h showed no obvious diffusion of molten salt elements into the coatings. Compared to 310S stainless steel, the pre-oxidized coating sample exhibited a significant reduction of 50.2% in corrosion mass loss. The pre-oxidation of the NiAl coating creates an Al2O3 oxidation layer that effectively blocks corrosion, offering a new method for protecting stainless steels in concentrated solar power system plants.
{"title":"Microstructure Evolution and Molten Salt Corrosion Resistance Dependent on Pre-Oxidation Treatment of NiAl Coatings","authors":"Shi-peng Xu, Yue-hong Zheng, Fa-qi Zhan, Pei-qing La","doi":"10.1166/sam.2024.4676","DOIUrl":"https://doi.org/10.1166/sam.2024.4676","url":null,"abstract":"The chloride-infused molten salt shows the most potential as the medium for the upcoming generation of concentrated solar power system. However, the molten salt put for ward higher corrosion resistance demand on the critical components of concentrated solar power system. The application\u0000 of NiAl coating proves to be a highly efficient method for preventing corrosion. In this paper, the microstructure, adhesion, and corrosion resistance of NiAl coatings on 310S stainless steel with/without pre-oxidation treatment were studied. The coating predominantly consisted of β-NiAl\u0000 phase nanocrystals with an Al content of 41.0 at.%. Continuous α-Al2O3 oxide film was formed and no obvious cracks were observed after pre-oxidation. The adhesion strength of NiAl coating was increased by about 70% to 40.0 N through pre-oxidation. Importantly,\u0000 the corrosion results of NiAl coatings by pre-oxidation treatment in the mixed salt of NaCl/MgCl2/KCl at 1073.15 K for 10 h showed no obvious diffusion of molten salt elements into the coatings. Compared to 310S stainless steel, the pre-oxidized coating sample exhibited a significant\u0000 reduction of 50.2% in corrosion mass loss. The pre-oxidation of the NiAl coating creates an Al2O3 oxidation layer that effectively blocks corrosion, offering a new method for protecting stainless steels in concentrated solar power system plants.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141233814","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}
S. M. Bodhale, G. Bhinge, A. S. Gurav, A. D. Teli, N. Kengar, A. Vedante, P. R. Jadhav, M. M. Abdullah, Hasan B. Albargi, JariS. Algethami, Preeti Singh, C. M. Kanamadi
In this study, nickel ferrite (NiFe2O4) nanoparticles were synthesized using the hydrothermal method at various pH values. The objective was to investigate the influence of pH variation on particle size and electrocatalytic activity. The formation of cubic phase nanoparticles was confirmed through X-ray diffraction (XRD) analysis. To characterize the electrochemical properties, the nickel ferrite nanoparticles were coated onto a stainless steel substrate using the doctor blade technique. The microstructural analysis was conducted using scanning electron microscopy (SEM). The samples were further analyzed using linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). The average crystallite size, determined from the XRD pattern, was approximately 40 nm. SEM images revealed a conversion from nanoplates to a granular morphology. The synthesized electrode exhibited an overpotential of 392 mV at 10 mA/cm2 and demonstrated good stability for 5 hours. These findings highlight the excellent electrocatalytic activity of nickel ferrite nanoparticles for the oxygen evolution reaction (OER).
{"title":"Investigating the Electrocatalytic Oxygen Evolution Reaction of Hydrothermally Synthesized NiFe2O4 Nanoparticles","authors":"S. M. Bodhale, G. Bhinge, A. S. Gurav, A. D. Teli, N. Kengar, A. Vedante, P. R. Jadhav, M. M. Abdullah, Hasan B. Albargi, JariS. Algethami, Preeti Singh, C. M. Kanamadi","doi":"10.1166/sam.2024.4691","DOIUrl":"https://doi.org/10.1166/sam.2024.4691","url":null,"abstract":"In this study, nickel ferrite (NiFe2O4) nanoparticles were synthesized using the hydrothermal method at various pH values. The objective was to investigate the influence of pH variation on particle size and electrocatalytic activity. The formation of cubic phase\u0000 nanoparticles was confirmed through X-ray diffraction (XRD) analysis. To characterize the electrochemical properties, the nickel ferrite nanoparticles were coated onto a stainless steel substrate using the doctor blade technique. The microstructural analysis was conducted using scanning electron\u0000 microscopy (SEM). The samples were further analyzed using linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). The average crystallite size, determined from the XRD pattern, was approximately 40 nm. SEM images revealed a conversion from nanoplates to a granular\u0000 morphology. The synthesized electrode exhibited an overpotential of 392 mV at 10 mA/cm2 and demonstrated good stability for 5 hours. These findings highlight the excellent electrocatalytic activity of nickel ferrite nanoparticles for the oxygen evolution reaction (OER).","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141230566","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}
Jawed Mustafa, Faez Qahtani, Khalid Umar, Hasan M. H. Muhaisen, M. M. Abdullah, Mohammad Luqman
A copper (II) ion-selective sensor was generated using a processed membrane that included 4-(2-(2,4-Dinitrophenylhydrazono) Methyl)Benzene-1,3-diol (L). The sensor’s efficacy was tested using a variety of plasticizers, comprising sodium tetraphenylborate (NaTPB), O-Nitrophenyloctyl ether (ONPOE), benzyl acetate (BA), dibutyl phthalate (DBP), and dibutyl sebacate (DBS). Membrane layers comprised of L:DBS:OA:PVC in a ratio of 5:55:10:30 (w/w,%) provided optimum sensing effectiveness. The detection system performed well in an average concentration that ranged from 5.3×10−8 to 1.0×10−1 mol L−1, with a Nernstian slope of 29.1±0.5 mV decade-1 for Cu(II) ions. The sensor’s minimal detection limit of 2.1×10−8 mol, broad pH range (3.1–8.2), quick reaction time (9 s), strong non-aqueous resistance (up to 25% v/v), and good retention time (2 months) demonstrates its value. Potentiometric selectivity coefficients revealed an exclusive exposure for Cu(II) ions under the influence of intervening ions, allowing for accurate identification of copper in a variety of materials such as food oils, tomato plant material, and river water. The proposed sensor is a promising means for accurately detecting Cu(II) ions in environmental and food specimens, with potential utilization in quality assurance and environmental surveillance.
{"title":"Copper (II) Ion Detection in Food and Water Harnessing Schiff Base-Enabled Electrochemical Sensor","authors":"Jawed Mustafa, Faez Qahtani, Khalid Umar, Hasan M. H. Muhaisen, M. M. Abdullah, Mohammad Luqman","doi":"10.1166/sam.2024.4673","DOIUrl":"https://doi.org/10.1166/sam.2024.4673","url":null,"abstract":"A copper (II) ion-selective sensor was generated using a processed membrane that included 4-(2-(2,4-Dinitrophenylhydrazono) Methyl)Benzene-1,3-diol (L). The sensor’s efficacy was tested using a variety of plasticizers, comprising sodium tetraphenylborate (NaTPB), O-Nitrophenyloctyl\u0000 ether (ONPOE), benzyl acetate (BA), dibutyl phthalate (DBP), and dibutyl sebacate (DBS). Membrane layers comprised of L:DBS:OA:PVC in a ratio of 5:55:10:30 (w/w,%) provided optimum sensing effectiveness. The detection system performed well in an average concentration that ranged from 5.3×10−8\u0000 to 1.0×10−1 mol L−1, with a Nernstian slope of 29.1±0.5 mV decade-1 for Cu(II) ions. The sensor’s minimal detection limit of 2.1×10−8 mol, broad pH range (3.1–8.2), quick reaction time (9 s), strong non-aqueous\u0000 resistance (up to 25% v/v), and good retention time (2 months) demonstrates its value. Potentiometric selectivity coefficients revealed an exclusive exposure for Cu(II) ions under the influence of intervening ions, allowing for accurate identification of copper in a variety of materials such\u0000 as food oils, tomato plant material, and river water. The proposed sensor is a promising means for accurately detecting Cu(II) ions in environmental and food specimens, with potential utilization in quality assurance and environmental surveillance.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141233909","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}
Pooja Mishra, Salman Khan, Zeeshan Rafi, Tabrez Faruqui, Shazia Mansoor, Irshad Ahmad, Irfan Ahmad, Samra Siddiqui, Mohd Saeed
Terpenoids are a group of secondary metabolites derived from isoprene and are among the most diverse natural products responsible for crucial role in the metabolism of organisms. They are found in various forms, including terpene hydrocarbons, alcohols, aldehydes, carboxylic acids, ketones, esters, and glycosides. Terpenes have a broad range of medicinal properties and are used to prepare drugs such as artemisinin. Metallic nanoparticles that are formed by plants have garnered significant interest across various fields, including medicine, the environment, food processing, and agriculture. Using plant extracts to reduce metals is regarded as both eco-friendly and affordable and has recently gained popularity for synthesizing various classes of nanoparticles. In this study, we reviewed plant-derived terpenes (monoterpenes, sesquiterpenes, diterpenes, sesquiterpenes, triterpenes, and meroterpenes), their applications in medicine, and for the synthesis of nanoparticles. This review is relevant to researchers interested in combating bacterial infections and cancers and in using terpenoids in the synthesis of nanoparticles.
{"title":"Exploring the Significance and Cutting-Edge Applications of Terpenes and Terpenoid-Derived Inorganic Nanoparticles","authors":"Pooja Mishra, Salman Khan, Zeeshan Rafi, Tabrez Faruqui, Shazia Mansoor, Irshad Ahmad, Irfan Ahmad, Samra Siddiqui, Mohd Saeed","doi":"10.1166/sam.2024.4688","DOIUrl":"https://doi.org/10.1166/sam.2024.4688","url":null,"abstract":"Terpenoids are a group of secondary metabolites derived from isoprene and are among the most diverse natural products responsible for crucial role in the metabolism of organisms. They are found in various forms, including terpene hydrocarbons, alcohols, aldehydes, carboxylic acids,\u0000 ketones, esters, and glycosides. Terpenes have a broad range of medicinal properties and are used to prepare drugs such as artemisinin. Metallic nanoparticles that are formed by plants have garnered significant interest across various fields, including medicine, the environment, food processing,\u0000 and agriculture. Using plant extracts to reduce metals is regarded as both eco-friendly and affordable and has recently gained popularity for synthesizing various classes of nanoparticles. In this study, we reviewed plant-derived terpenes (monoterpenes, sesquiterpenes, diterpenes, sesquiterpenes,\u0000 triterpenes, and meroterpenes), their applications in medicine, and for the synthesis of nanoparticles. This review is relevant to researchers interested in combating bacterial infections and cancers and in using terpenoids in the synthesis of nanoparticles.","PeriodicalId":21671,"journal":{"name":"Science of Advanced Materials","volume":null,"pages":null},"PeriodicalIF":0.9,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141231009","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}
Sang-Hee Kim, Jong-Beom Choi, Kyung-Hwang Lee, Seo-Hee Kim, Jun Kang, Myeong-Hoon Lee, Yong-Sup Yun
The rising demand for black-treated steel faces challenges with conventional black painting due to issues like scratching and peeling, impacting corrosion resistance and aesthetics. This study explores an alternative method, anodic oxidation, to blacken the surfaces of galvanized or coated steel plates. Parameters like temperature, duration, current density, and gas type were varied during the blackening process. The investigation aimed to identify key factors influencing the blackening. Scanning electron microscopy observed the morphology, while energy-dispersive X-ray spectroscopy and glow discharge mass spectrometry analyzed the chemical composition distribution. X-ray diffraction and X-ray photoelectron spectroscopy conducted compound crystal structure analysis. Results indicate higher temperatures, longer durations, and higher current densities improve blackening through anodic oxidation. Increased magnesium proportion on the surface leads to roughness and porous magnesium oxide formation, enhancing light absorption and explaining the observed blackening effect.
由于划痕和剥落等问题，传统的涂黑工艺在耐腐蚀性和美观性方面都面临挑战。本研究探索了一种替代方法，即阳极氧化法，对镀锌或涂层钢板表面进行发黑处理。在发黑过程中，温度、持续时间、电流密度和气体类型等参数都会发生变化。调查旨在找出影响发黑的关键因素。扫描电子显微镜观察了形貌，而能量色散 X 射线光谱法和辉光放电质谱法分析了化学成分分布。X 射线衍射和 X 射线光电子能谱分析了化合物晶体结构。结果表明，更高的温度、更长的持续时间和更高的电流密度可通过阳极氧化改善发黑。表面镁比例的增加导致粗糙和多孔氧化镁的形成，从而增强了光吸收并解释了所观察到的发黑效应。
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