Materials Chemistry and Physics最新文献

{"title":"Eco-sustainable and flexible SERS platform based on waste cellulose decorated by Ag nanoparticles","authors":"","doi":"10.1016/j.matchemphys.2024.130061","DOIUrl":"10.1016/j.matchemphys.2024.130061","url":null,"abstract":"<div><div>This paper presents an innovative and environmentally friendly technology for the fabrication of low-cost SERS (Surface-Enhanced Raman Spectroscopy) sensors based on flexible substrates made of cellulose fibers reclaimed from waste. The substrates are decorated with nanostructured silver (Ag) thin films produced by pulsed laser deposition (PLD). In this process, the deposition conditions (laser fluence, gas pressure, target-substrate distance, deposition time, etc.) were optimized to enhance the SERS response. Different types of paper with different textures were tested, as it was also observed that the paper roughness significantly influences SERS efficiency. The samples were characterized using UV–Vis absorption spectroscopy, SEM microscopy, and surface profilometry to evaluate both the paper and the deposited films' morphologies. The SERS activity was assessed by detecting Rhodamine 6G in aqueous solutions drop-casted on the sensors, with concentrations ranging from 10⁻² M to 10⁻¹⁰ M. Measurements were carried out using a handheld instrument equipped with dual excitation laser lines centered at 785 nm and 833 nm. The observed lower detection limit of 10⁻¹⁰ M was achieved across all paper types tested. These results demonstrate the potential of integrating smart, eco-friendly materials in the fabrication of chemical sensors for sustainable advancement in environmental monitoring and safety. The materials not only exhibit excellent sensing capabilities but also minimize ecological footprints through renewable sourcing and eco-friendly production processes. While the deposition protocol is well-established for other substrates, this study marks the first exploration of its use on biomass-derived substrates.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication and in vitro biological properties of hydroxyapatite-sodium potassium niobate-barium titanate piezoelectric bioceramics","authors":"","doi":"10.1016/j.matchemphys.2024.130060","DOIUrl":"10.1016/j.matchemphys.2024.130060","url":null,"abstract":"<div><div>The utilization of piezoelectric materials in bone implants is appealing due to the inherent piezoelectric property of natural bone. The intrinsic electrical characteristics of piezoelectric biomaterials enhance antibacterial activities, biocompatibility, and bioactivity properties. This study delves into investigating the antibacterial properties, biocompatibility, and bioactivity of three-component biocomposites: sodium potassium niobate (KNN)-barium titanate (BT)-hydroxyapatite (HA). The combination of sodium potassium niobate and barium titanate, possessing suitable piezoelectric properties, with hydroxyapatite, known for its favorable biological properties, enhances the requisite properties for a bone implant. Among the various compositions studied, the combination comprising 70 wt% of the piezoelectric component (KNN-BT) and 30 wt% hydroxyapatite, labeled as 30HKB, emerged as the most optimal blend in terms of density, morphotropic phase boundary, and other biological tests conducted. Following polarization, the antibacterial efficacy of 30HKB against S. aureus bacteria cells increased by 61 %. Furthermore, the growth and adhesion of MC3T3-E1 osteoblast cells suggest enhanced biocompatibility of the 30HKB composite attributed to surface polarization. The surface charges generated by polarization facilitated the absorption of Ca2+ ions, as well as the interaction of HPO4 - and OH- ions with the precipitated Ca2+ ions, leading to the formation of the CaP layer. Hence, polarized piezoelectric ceramics exhibit heightened bioactivity compared to their non-polarized counterparts.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron hematite-magnetite composite supported on mesoporous SBA-15 synthesized by using silica from cogon grass as a solid catalyst in phenol hydroxylation","authors":"","doi":"10.1016/j.matchemphys.2024.130057","DOIUrl":"10.1016/j.matchemphys.2024.130057","url":null,"abstract":"<div><div>Phenol hydroxylation involves the oxidation of phenol (C₆H₅OH) using hydrogen peroxide (H₂O₂) to yield benzenediol (C₆H₄(OH)₂), mainly catechol (CTL) and hydroquinone (HQ). These products are in high demand in the pharmaceuticals industry sector. Thus, it is still worth investigating for further improvement in terms of heterogeneous iron catalysts. Herein, this research focuses on an iron hematite (Fe₂O₃)-magnetite (Fe₃O₄) composite catalyst supported on SBA-15 using silica from cogon grass for phenol hydroxylation. The extracted silica exhibited a fine white powder appearance and an amorphous structure, used as a silica source for SBA-15 synthesis. After catalyst preparation, the presence of Fe₂O₃, Fe₃O_4, and Fe₂O₃–Fe₃O₄ composite on SBA-15 was confirmed by using X-ray absorption near-edge structure (XANES). X-ray photoelectron spectroscopy (XPS) analysis provided insights into the surface of the catalyst, revealing that Fe₂O₃–Fe₃O₄/SBA-15 had the highest dispersion of iron species. In terms of catalytic performance, Fe₂O₃–Fe₃O₄/SBA-15 displayed the highest conversion of 88 % and HQ selectivity of 46 % compared with lone Fe₃O₄/SBA-15 or Fe₂O₃/SBA-15. The magnetic separation approach demonstrated the easy separation of catalysts containing Fe₃O₄. Reusability studies showed that Fe₂O₃–Fe₃O₄/SBA-15 maintained its activity up to the 4th cycle, suggesting minimized iron leaching compared to Fe₃O₄/SBA-15. Overall, this study provides insights into the catalytic performance of phenol hydroxylation and iron-based catalysts, emphasizing the potential of Fe₂O₃–Fe₃O₄/SBA-15 as an effective and reusable catalyst.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving the foaming performance of foamed ceramics using Fe2O3 as an oxygen donor","authors":"","doi":"10.1016/j.matchemphys.2024.130048","DOIUrl":"10.1016/j.matchemphys.2024.130048","url":null,"abstract":"<div><div>A solution is proposed to reduce the cost of preparing foamed ceramics (FCs) by adding Fe₂O₃ to the material system. As the Si₃N₄ in the Fe₂O₃–free material system increases, the molten ceramic matrix allows a slight increase in gas generation at elevated temperatures, resulting in a slight increase in the foaming volume of FCs. The addition of Fe₂O₃ increases the oxygen supply capacity of the molten ceramic matrix at elevated temperatures, thereby accelerating the oxidation of Si₃N₄ and consequently increasing the foaming volume of the FCs. The FCs sintered from the 5 wt% Fe₂O₃ and 2 wt% Si₃N₄ material system at 1160–1180 °C have satisfactory overall performance with total/closed porosity of (73.6–79.5)%/(71.4–75.7)% and compressive strength of 10.2–15.4 MPa. The addition of Fe₂O₃ to the material system can reduce the dosage of Si₃N₄ for FCs preparation, thereby decreasing the cost of FCs preparation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface functionalization of XC18 steel using a new transition metal complex for remarkable corrosion performance: Empirical and theoretical studies","authors":"","doi":"10.1016/j.matchemphys.2024.130042","DOIUrl":"10.1016/j.matchemphys.2024.130042","url":null,"abstract":"<div><div>Synthesis of transition metal complexes (TMC) having specific characteristics is advantageous for combining their organic and inorganic properties, to help prevent metals from corrosion. In this study, the corrosion inhibition behavior of [N, N′-bis(salicylidene)-2,2-dimethyl-1,3-propanediaminato] copper (II) (CuL) on the surface of XC18 steel surface immersed in 1.0 M HCl was investigated. The thermodynamic and kinetic corrosion parameters were determined using the mass loss (ML) and electrochemical measurement methods. CuL exhibited a good corrosion inhibition efficiency of 96.72 %. The adsorption behavior of CuL followed the Langmuir isotherm model, indicating both physical and chemical interactions. Morphological structural analysis demonstrated that CuL formed a protective film between the surface of XC18 steel and the corrosives elements, thus confirming its adsorption onto XC18 steel surface. Theoretical calculations were consistent with the experimental findings, thereby confirming that the adsorption of CuL onto the steel surface comprises both physisorption and chemisorption processes. These calculations elucidate the specific bonding nature and emphasize the significant inter- and intra-molecular interactions that enhance the stability and adsorption capability of the CuL inhibitor. The successful formation of a protective layer on the surface of XC18 steel using a TMC signifies exciting prospects for the development of advanced materials with diverse applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical hydrogen storage using SrFe12O19 surface-immobilized polyoxometalate","authors":"","doi":"10.1016/j.matchemphys.2024.130062","DOIUrl":"10.1016/j.matchemphys.2024.130062","url":null,"abstract":"<div><div>A <em>tri</em>-nickel substituted Keggin-type polyoxometalate (PMo₉Ni₃O₃₇) was synthesized and subsequently immobilized on the surface of the M-type strontium hexaferrite (SrFe₁₂O₁₉) <em>via</em> the sol-gel method. The investigation of hydrogen storage capacity for the synthesized PMo₉Ni₃O₃₇@SrFe₁₂O₁₉ nanocomposite was conducted through electrochemical methodologies employing chronopotentiometry (CP). A conventional three-electrode configuration employing copper foam coated with PMo₉Ni₃O₃₇@SrFe₁₂O₁₉ served as the working electrode and was examined across a current range of ±1.5 mA. The charge and discharge of the experimental procedure indicated the substantial potential of the PMo₉Ni₃O₃₇@SrFe₁₂O₁₉ nanocomposite in the hydrogen storage process, which was determined 3125 mAh/g during the discharge phase. The successful synthesis was corroborated thorough FT-IR, UV–vis, XRD, SEM, EDX, and BET surface area analysis techniques by examining the characteristic absorption wavelengths or reflection patterns. The size of the nanoparticles was determined through SEM analysis yielding a diameter of 36.76 nm, and using the Scherrer equation, a diameter of 29.22 nm was obtained.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solid-state synthesis of nickel selenide for high-performance supercapacitors","authors":"","doi":"10.1016/j.matchemphys.2024.130052","DOIUrl":"10.1016/j.matchemphys.2024.130052","url":null,"abstract":"<div><div>This study focuses on the synthesis and electrochemical characterization of nickel diselenide (NiSe₂) as a promising electrode material for supercapacitors. NiSe₂ was synthesized through a facile solid-state process involving the mixing of nickel acetylacetonate and selenous acid, followed by drying and sintering at 500 °C under inert conditions. The resulting NiSe₂ exhibited a granular structure with worm-like surface architecture and particle size ranging from 20 to 100 nm. The electrochemical performance of NiSe₂ was evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS) in a 6 M KOH electrolyte. NiSe₂ demonstrated a high specific capacitance of 744.7 F g⁻¹ at a discharge rate of 1 A g⁻¹, with an outstanding rate capability retaining the capacitance of 483.6 F g⁻¹ at 10 A g⁻¹, and exceptional long-term cycling stability. The kinetic analysis revealed that the energy storage mechanism in NiSe₂ primarily involves diffusion-controlled charge storage. EIS further confirmed the favorable charge transfer properties of the NiSe₂ electrode. Overall, NiSe₂ synthesized via the proposed method shows great promise for application in high-performance supercapacitors.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphology-dependent magnetic hyperthermia characteristics of Fe3O4 nanoparticles","authors":"","doi":"10.1016/j.matchemphys.2024.130045","DOIUrl":"10.1016/j.matchemphys.2024.130045","url":null,"abstract":"<div><div>Magnetic hyperthermia therapy (MHT) represents an innovative approach to cancer treatment, harnessing the therapeutic capabilities of magnetic nanoparticles. Fe₃O₄ nanoparticles are often considered ideal candidates for MHT because of their biocompatibility. However, the clinical application of Fe₃O₄ nanoparticles is hindered by their low heating efficiency and concerns regarding potential toxicity linked to the high concentrations required to achieve therapeutic effects. In this study, two unique structures, hollow spherical and nanoflower Fe₃O₄, were successfully synthesized to enhance their magnetothermal conversion efficiency. The results indicate that Fe₃O₄ nanoflowers exhibit an intrinsic loss power (ILP) value of 6.52, which is 1.83 times greater than the ILP of hollow spherical Fe₃O₄ (3.55), indicating its enhanced potential for MHT applications. The COMSOL simulation demonstrated that higher magnetic field frequencies and intensities elevate tissue temperature and damage in tumor cells, particularly at 100 kHz and 400 kHz, with tumor tissue damage scores rising to 0.28 and 0.93, respectively. Shorter heating durations, such as 6 min, minimize harm to healthy tissue and are ideal for treatments requiring multiple sessions. After 12 min, tumor scores rose to 0.85, while normal tissue scores were 0.34, suggesting that longer durations improve therapeutic effects on tumors but also heighten the risk to healthy cells. This research provides a scientific foundation for selecting materials in the context of MHT for cancer treatment, potentially paving the way for more effective and safer therapeutic strategies.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A study on BaTiO3 – NiFe2O4 composite; microstructure, multiferroic and magnetodielectric properties","authors":"","doi":"10.1016/j.matchemphys.2024.130044","DOIUrl":"10.1016/j.matchemphys.2024.130044","url":null,"abstract":"<div><div>The lead-free <em>x</em> NiFe₂O₄ – <em>(1-x)</em> BaTiO₃ (<em>x</em> = 0, 0.05, 0.1, 0.15) multiferroic composites were prepared via the solid-state sintering technique. Microstructure, multiferroic, and magnetodielectric properties of composites were investigated. According to the XRD data (from <em>x</em> = 5 to 15 wt%), the tetragonality factor (<em>c</em>_<em>T</em><em>/a</em>_<em>T</em>) and unit cell volume of the BaTiO₃ (BTO) crystal system diminished. Based on SEM images, ferromagnetic NiFe₂O₄ (NFO) grains are uniformly dispersed in the ferroelectric BTO matrix without additional reaction in the interfaces of two phases. The highest values of dielectric (dielectric constant (<em>ε</em>_<em>r</em>) ∼ 1905 and dielectric loss factor (tan δ) ∼ 0.049) and ferroelectric properties (saturation polarization (<em>P</em>_<em>S</em>) ∼ 13 μC/cm² and remnant polarization (<em>P</em>_<em>r</em>) ∼ 10 μC/cm²) are attained for <em>x</em> = 5 wt% due to the lowest NFO (non-ferroelectric) concentration. Also, with increasing ferrite concentration (up to 15 wt%), the ferroelectric properties of the composites show a gradual decrease. The saturation magnetization (<em>M</em>_<em>S</em>) values rise due to increasing ferrite concentration (from 2 to 5 emu/g for <em>x</em> = 5 to 15 wt%). Moreover, coercivity (<em>H</em>_<em>C</em>) drops from 150 to 110 Oe. The simultaneous observation of the ferroelectric and ferromagnetic characteristic hysteresis loops confirmed the multiferroic effect for <em>x</em> = 5, 10, and 15 wt%. The highest magnetodielectric constant (3 %) is obtained for <em>x</em> = 15 wt% multiferroic composite at the applied magnetic field of 6 kOe.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphene oxide modified with magnesium hydroxide derived from dolomites for dyes adsorptions and supercapacitor","authors":"","doi":"10.1016/j.matchemphys.2024.130041","DOIUrl":"10.1016/j.matchemphys.2024.130041","url":null,"abstract":"<div><div>This research highlights the novelty of using dolomite as an Mg(OH)₂ source for synthesizing GO/Mg(OH)₂ nanocomposite, a dye adsorbent and supercapacitor material. So far, dolomite has only been conventionally used as fertilizer and building material. By utilizing dolomite as Mg(OH)₂ raw materials, this nanocomposite shows high efficiency in removing methylene blue (MB) up to 97 % with adsorption kinetics following a pseudo-second-order model. At an optimal pH of 5, this material can be used repeatedly with satisfactory results. For supercapacitor applications, GO/Mg(OH)₂ has a specific capacitance of 117.80 F g⁻¹ at a current density of 0.5 A g⁻¹ and 90 % cyclic capacity retention, making it an excellent candidate in modern energy storage technology.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}