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Type-1 heterojunction TiO2 Nanotubes/Ag2CrO4 nanoparticles: Advanced photocatalytic and electrochemical applications
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-03-02 DOI: 10.1016/j.matchemphys.2025.130573
S. Appu , Udayabhanu , B.R. Anusha , H.N. Priyadarshini , Fahd Alharethy , Reddy G. Srinivas , Abhijna , G. Nagaraju , K. Prashantha
{"title":"Type-1 heterojunction TiO2 Nanotubes/Ag2CrO4 nanoparticles: Advanced photocatalytic and electrochemical applications","authors":"S. Appu ,&nbsp;Udayabhanu ,&nbsp;B.R. Anusha ,&nbsp;H.N. Priyadarshini ,&nbsp;Fahd Alharethy ,&nbsp;Reddy G. Srinivas ,&nbsp;Abhijna ,&nbsp;G. Nagaraju ,&nbsp;K. Prashantha","doi":"10.1016/j.matchemphys.2025.130573","DOIUrl":"10.1016/j.matchemphys.2025.130573","url":null,"abstract":"<div><div>This study introduces a novel methodology for fabricating stable, high-performance TiO<sub>2</sub> nanotubes incorporated with orthorhombic Ag<sub>2</sub>CrO<sub>4</sub> heterojunctions, aimed at advancing multifunctional applications. Comprehensive characterization using techniques such as XRD, FTIR, UV-DRS, SEM, TEM, PL, and XPS reveals the structural, optical, and electrochemical properties of the material. The resulting composite exhibits a unique Type-1 heterojunction mechanism that enhances charge separation and transfer, improving its functionality across diverse applications. In photocatalysis, the material demonstrates extended light absorption, achieving complete degradation of organic pollutants within 180 min. Additionally, it exhibits remarkable electrochemical performance, particularly in nitrite sensing, with a detection limit of 1.04 μM. This work underscores the potential of TiO<sub>2</sub> nanotubes with orthorhombic Ag<sub>2</sub>CrO<sub>4</sub> heterojunctions as a sustainable and efficient solution for environmental remediation, low-level analyte detection, and biomedical applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130573"},"PeriodicalIF":4.3,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529631","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}
引用次数: 0
NiO/CdO/Co3O4 nanocomposite as an efficient visible-light photocatalyst for photodegradation and water splitting synthesized by recycling spent Ni–Cd batteries
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-03-02 DOI: 10.1016/j.matchemphys.2025.130626
Nikta Sadat Moalej, Amir Saadati, Saeed Sheibani, Mohammad Mokmeli
{"title":"NiO/CdO/Co3O4 nanocomposite as an efficient visible-light photocatalyst for photodegradation and water splitting synthesized by recycling spent Ni–Cd batteries","authors":"Nikta Sadat Moalej,&nbsp;Amir Saadati,&nbsp;Saeed Sheibani,&nbsp;Mohammad Mokmeli","doi":"10.1016/j.matchemphys.2025.130626","DOIUrl":"10.1016/j.matchemphys.2025.130626","url":null,"abstract":"<div><div>Recycling electronic wastes containing precious metals and turning them into valuable products has economic and environmental value. In this paper, recycling spent nickel-cadmium (Ni–Cd) batteries in producing a ternary NiO/CdO/Co<sub>3</sub>O<sub>4</sub> nanocomposite (BAT) was introduced as a novel, cost-effective, and environmentally friendly procedure. For this purpose, Ni, Cd, and Co elements were recovered, with leaching recoveries of 91, 99, and 99.5 %, respectively, using sulfuric acid. The leach liquor was used as the starting feed material in a sol-gel process. For a comparison matter, the same ternary nanocomposite was synthesized through a conventional co-precipitation method using nitrate precursors as a reference sample (REF). The calculated band gap energy of the BAT and REF was 2.05 and 2.40 eV. The optical properties improvement of the BAT sample, along with the proper contact interface, led to a rate constant of 0.0062 1/min in photocatalytic methylene blue (MB) degradation and 988.2 μmol/g.h in photocatalytic hydrogen evolution (PHE). A 2.5 times reduction in the charge transfer resistance from 2110 Ω in the REF sample to 849 Ω in the BAT was also observed. A combination of Z-scheme and type I charge transfer was proposed to justify the higher photocatalytic performance of the BAT sample. This work has introduced a novel approach for recycling spent Ni–Cd batteries by directly employing the leach liquor to synthesize NiO/CdO/Co<sub>3</sub>O<sub>4</sub> photocatalyst.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130626"},"PeriodicalIF":4.3,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529630","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}
引用次数: 0
Structural and photoluminescent behavior of Rare Earths doped Gd2O3 nanoparticles embedded into SiO2 amorphous matrix obtained by sol-gel method for energy conversion
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-03-01 DOI: 10.1016/j.matchemphys.2025.130574
Thaís Karine de Lima Rezende , Jordy Angelo Carneiro , Helliomar Pereira Barbosa , Júlio Antônio Nieri de Toledo Soares , Changqiang Chen , Guilherme de Lima Fernandes , Nilmar Silva Camilo , Jorge Elias Mabjaia , Acácio Aparecido Andrade , Mauro Roberto Sardela Junior , Jefferson Luis Ferrari
{"title":"Structural and photoluminescent behavior of Rare Earths doped Gd2O3 nanoparticles embedded into SiO2 amorphous matrix obtained by sol-gel method for energy conversion","authors":"Thaís Karine de Lima Rezende ,&nbsp;Jordy Angelo Carneiro ,&nbsp;Helliomar Pereira Barbosa ,&nbsp;Júlio Antônio Nieri de Toledo Soares ,&nbsp;Changqiang Chen ,&nbsp;Guilherme de Lima Fernandes ,&nbsp;Nilmar Silva Camilo ,&nbsp;Jorge Elias Mabjaia ,&nbsp;Acácio Aparecido Andrade ,&nbsp;Mauro Roberto Sardela Junior ,&nbsp;Jefferson Luis Ferrari","doi":"10.1016/j.matchemphys.2025.130574","DOIUrl":"10.1016/j.matchemphys.2025.130574","url":null,"abstract":"<div><div>This work presents the synthesis, structural and spectroscopic characterization, and luminescence (upconversion and downshifting) properties of SiO<sub>2</sub>-Gd<sub>2</sub>O<sub>3</sub> materials doped with different proportions of Er<sup>3+</sup>, Yb<sup>3+</sup>, and Eu<sup>3+</sup>. The materials were synthesized via the sol-gel method and heat-treated for 8 h at 900 °C. XRD showed intense peaks corresponding to crystalline cubic Gd<sub>2</sub>O<sub>3</sub> (space group Ia<sub>3</sub>), confirmed by FTIR and Raman results, with no additional peaks, indicating successful doping. Rietveld refinement revealed a microstrain of 0.221–0.524 %, and crystallite sizes between 55.38 and 163.37 nm, confirmed by TEM images. TEM revealed crystalline Gd<sub>2</sub>O<sub>3</sub> nanoparticles (NPs) dispersed in amorphous silica. UV–Vis spectra showed, absorption bands for both the matrix and dopants, including the O<sup>2−</sup>(2p) → Eu<sup>3+</sup>(4f<sup>6</sup>) charge transfer band, suggesting energy transfer. Using the Kubelka-Munk equation, the band gap was calculated to be between 4.98 and 5.18 eV. The emission spectra show the intraconfigurational 4f-4f bands of the Eu<sup>3+</sup> ion between 469 and 710 nm arising from the <sup>5</sup>D<sub>2</sub> → <sup>7</sup>F<sub>0</sub>, <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>0-5</sub> transitions. Under 266 nm excitation, the Eu<sup>3+ 5</sup>D<sub>0</sub> <sup>→ 7</sup>F<sub>0</sub> transition split, indicating two symmetry sites for Eu<sup>3+</sup> ions (C<sub>2</sub> and S<sub>6</sub>). Besides, the emission bands related to the Er<sup>3+</sup> ion are also observed at 502, 512, 537, and 653 nm, associated with the transitions <sup>4</sup>F<sub>7/2</sub> → <sup>4</sup>I<sub>15/2</sub>, <sup>4</sup>H<sub>11/2</sub> → <sup>4</sup>I<sub>15/2</sub>, <sup>4</sup>S<sub>3/2</sub> → <sup>4</sup>I<sub>15/2</sub>, e <sup>4</sup>F<sub>9/2</sub> → <sup>4</sup>I<sub>15/2</sub>, respectively. Under 800 nm excitation, the materials presented the upconversion phenomena, with Yb<sup>3+</sup> ions acting as sensitizers. Strong green emission from Er<sup>3+</sup> (525–575 nm) was observed. These results suggest potential applications energy conversion as multicolor emitters in the photonic and biophotonic fields for instance for singlete oxygen generation for PDT.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130574"},"PeriodicalIF":4.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526594","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}
引用次数: 0
Fabrication of tungsten oxide-based hybrid photochromic blends by scalable method
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-28 DOI: 10.1016/j.matchemphys.2025.130572
E. Zayim , A.T. Mohseni , A. Galeckas , S. Sartori , U. Ernazarov , S. Zh Karazhanov
{"title":"Fabrication of tungsten oxide-based hybrid photochromic blends by scalable method","authors":"E. Zayim ,&nbsp;A.T. Mohseni ,&nbsp;A. Galeckas ,&nbsp;S. Sartori ,&nbsp;U. Ernazarov ,&nbsp;S. Zh Karazhanov","doi":"10.1016/j.matchemphys.2025.130572","DOIUrl":"10.1016/j.matchemphys.2025.130572","url":null,"abstract":"<div><div>In this paper we have synthesized tungsten oxide-based organic/inorganic hybrid materials composed of tungsten hexachloride (WCl<sub>6</sub>) and polyvinylpyrrolidone (PVP) micro- and nanosized fibers. The films are deposited on substrates such as paper, glass, metal, and fabric using techniques including electrospinning, spin coating, fiber drawing, casting, and inkjet printing methods. The films exhibit photochromic properties at room temperature. Distinct from pure WO<sub>3</sub>-based coatings, photochromism of the hybrid films is reversible at ambient conditions without heating or applying an electric field. Photochromic performance of the hybrid films has been studied. From optical properties studies we demonstrate about UV illumination-induced band gap engineering. Mechanism of the photochromic effect in the hybrid films is suggested to be related to defects. We suggest also that illumination with the UV light undergoes by structural point defect formation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130572"},"PeriodicalIF":4.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519183","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}
引用次数: 0
Simulations of oxidation behavior of the NbTiZr multicomponent alloy
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-27 DOI: 10.1016/j.matchemphys.2025.130616
Qingqing Wang , Xianggang Kong , You Yu , Tianyuan Xin , Lu Wu
{"title":"Simulations of oxidation behavior of the NbTiZr multicomponent alloy","authors":"Qingqing Wang ,&nbsp;Xianggang Kong ,&nbsp;You Yu ,&nbsp;Tianyuan Xin ,&nbsp;Lu Wu","doi":"10.1016/j.matchemphys.2025.130616","DOIUrl":"10.1016/j.matchemphys.2025.130616","url":null,"abstract":"<div><div>The oxidation behavior of NbTiZr multicomponent alloy has been investigated through modeling and simulations. The adsorption of oxygen atoms on metal surfaces is a pivotal factor in the processes of oxidation and corrosion. The results of oxygen adsorption energy calculations indicate that oxygen atoms are most stably adsorbed at sites adjacent to a higher number of Ti atoms on NbTiZr surface. This stability primarily stems from the strong interaction between Ti-<em>t</em><sub><em>2g</em></sub> orbitals and oxygen atoms, which is consistent with the experimental observation of a predominantly TiO<sub>2</sub> external oxide layer in NbTi-based alloys. The sequential adsorption of O atoms with different surface coverage rate on NbTiZr surface has also been studied. The calculations reveal that the average adsorption energy per oxygen atom increases with increasing oxygen coverage. And the order of adsorption ability is as follows: Ti &gt; Zr &gt; Nb. Additionally, it is observed that Ti can segregate on the surface, which can enhance both the adsorption and diffusion of oxygen atoms. What's more, based on the calculation results from Pilling Bedworth Ratio (PBR), it is inferred that the spallation observed on the surface of NbTiZr is due to the formation of Nb<sub>12</sub>O<sub>29</sub> and Nb<sub>2</sub>O<sub>5</sub>, as confirmed experimentally. When the ratio of Ti to O is high, such as in the case of Ti segregation on the surface, the resulting oxide layer is loose and not compact. Additionally, work function measurements indicate that an oxidized surface with segregated elements is less stable than one without such segregation. Consequently, to enhance the oxidation resistance of NbTiZr, it is essential to avoid Ti segregation on the surface through various experimental processing methods.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130616"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529632","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}
引用次数: 0
Improving the bimetallic interactions of CeO2@MnO2/MXenes for supercapacitor electrode applications
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-27 DOI: 10.1016/j.matchemphys.2025.130625
Faiz Imran , Azmat Hussain , Ibrahim Aladhyani , Fawad Ali , Shahbaz Afzal , Raphael M. Obodo
{"title":"Improving the bimetallic interactions of CeO2@MnO2/MXenes for supercapacitor electrode applications","authors":"Faiz Imran ,&nbsp;Azmat Hussain ,&nbsp;Ibrahim Aladhyani ,&nbsp;Fawad Ali ,&nbsp;Shahbaz Afzal ,&nbsp;Raphael M. Obodo","doi":"10.1016/j.matchemphys.2025.130625","DOIUrl":"10.1016/j.matchemphys.2025.130625","url":null,"abstract":"<div><div>The characteristics of large surface area, high chemical firmness and virtuous electrical conductivity make MXene-based electrodes an emerging potential material for supercapacitor electrode applications. The qualities of invented electrodes were examined using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), UV–visible spectroscopy, and electrochemical analysis. The estimated specific capacitance of 1370 F g<sup>-1</sup> from cyclic voltammetry (CV) at a scan rate of 1.0 mVs<sup>−1</sup> and 1520 F g<sup>-1</sup> from galvanostatic charge-discharge (GCD) at 0.5 Ag<sup>-1</sup> current density, respectively, were obtained from the CeO<sub>2</sub>@MnO<sub>2</sub>/MXene electrode. The study's findings suggest that the addition of MXene caused the manufactured electrodes' electrochemical properties to improve. The electrodes CeO<sub>2</sub>/MXene, MnO<sub>2</sub>/MXene, and CeO<sub>2</sub>@MnO<sub>2</sub>/MXene have proven to be quite effective, which makes them a good option for supercapacitor electrode application. The CeO<sub>2</sub>@MnO<sub>2</sub>/MXene electrode was found to exhibit remarkable cyclic stability at 0.5 Ag<sup>-1</sup> current density, maintaining 73.5 % of its initial measurements after 10,000 full cycles.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130625"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529636","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}
引用次数: 0
Binding buffer optimization for TEOS-modified magnetite nanoparticle-based DNA extraction method
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-26 DOI: 10.1016/j.matchemphys.2025.130622
Stanley Evander Emeltan Tjoa , Mudasir Mudasir , Edi Suharyadi , Budi Setiadi Daryono
{"title":"Binding buffer optimization for TEOS-modified magnetite nanoparticle-based DNA extraction method","authors":"Stanley Evander Emeltan Tjoa ,&nbsp;Mudasir Mudasir ,&nbsp;Edi Suharyadi ,&nbsp;Budi Setiadi Daryono","doi":"10.1016/j.matchemphys.2025.130622","DOIUrl":"10.1016/j.matchemphys.2025.130622","url":null,"abstract":"<div><div>Magnetic nanoparticle-based DNA extraction is a well-known method. In its application, TEOS is the most common component used as a coating agent. TEOS-modified magnetic nanoparticle (TMNP) was prepared using a ratio of 0.5 ml TEOS/g MNP. The resulting TMNP has a crystalline size of 19.8 nm and has ferromagnetic properties. Selection of the appropriate binding buffer with TMNP based on the response of DNA concentration, purity, and integrity was GuSCN at a concentration of 2.5 M and dissolved at pH 6.5. This combination of TMNP and binding buffer can extract DNA of various types of bacteria and produce DNA in the range of 2.55–12.45 μg and DNA purity at 260/280 is 1.58–2.27. the type of bacteria that can be isolated is <em>Escherichia coli</em>, <em>Pseudomonas aeruginosa</em>, <em>Salmonella</em> sp., <em>Salmonella paratyphi</em>, <em>Bacillus subtilis</em>, <em>Staphylococcus aureus</em>, <em>Enterobacter aerogenes</em>, <em>Shigella sonnei</em>, <em>Staphylococcus epidermidis</em>, and <em>Mycobacterium tuberculosis</em>. The extracted DNA can also be used for probe-based and intercalating dye-based qPCR.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130622"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529634","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}
引用次数: 0
Tailored manganese ferrite nanoparticles with enhanced magnetic properties for effective hyperthermia cancer therapy
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-26 DOI: 10.1016/j.matchemphys.2025.130624
Sarvin Mohammadi-Aghdam , Suhaib Ahmed Mohammed , Mohammad Waleed M. Sadaka , Sattar H. Abed , Mohsen Mohammadalizadeh , Ameer F. Shamkhi
{"title":"Tailored manganese ferrite nanoparticles with enhanced magnetic properties for effective hyperthermia cancer therapy","authors":"Sarvin Mohammadi-Aghdam ,&nbsp;Suhaib Ahmed Mohammed ,&nbsp;Mohammad Waleed M. Sadaka ,&nbsp;Sattar H. Abed ,&nbsp;Mohsen Mohammadalizadeh ,&nbsp;Ameer F. Shamkhi","doi":"10.1016/j.matchemphys.2025.130624","DOIUrl":"10.1016/j.matchemphys.2025.130624","url":null,"abstract":"<div><div>Magnetic hyperthermia, a transformative nanotechnology-based approach, has redefined cancer therapy by enabling precise and localized treatment. In this study, manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub>) nanoparticles were synthesized via a thermal decomposition method, achieving exceptional magnetic and structural properties tailored for therapeutic applications. Advanced characterization techniques, including field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and vibrating sample magnetometry (VSM), confirmed the nanoparticles’ high crystallinity, chemical stability, and biocompatibility. Optimized synthesis conditions using 7.5 mmol of oleylamine and oleic acid surfactants produced nanoparticles with superior performance, exhibiting the lowest coercivity (15.7 Oe) and the highest saturation magnetization (33 emu/g). These features translated into remarkable magnetic hyperthermia efficiency, with a specific loss power (SLP) of 148.2 W/g in hexane media and 188.3 W/g in aqueous media, underscoring their ability to generate localized heat selectively. The thermal decomposition technique provided precise control over nanoparticle morphology and uniformity, ensuring their applicability in targeted cancer therapies. This study not only advances the understanding of MnFe<sub>2</sub>O<sub>4</sub> nanoparticle synthesis and properties but also establishes their pivotal role in next-generation therapeutic technologies, emphasizing the intersection of condensed matter physics and biomedical innovation.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130624"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529635","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}
引用次数: 0
Effect of the synthesis method on the heating ability and physicochemical properties of gallium and strontium-substituted manganese ferrites
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-26 DOI: 10.1016/j.matchemphys.2025.130623
F.J. Hernández-Castillo, D.A. Cortés-Hernández, J.C. Escobedo-Bocardo
{"title":"Effect of the synthesis method on the heating ability and physicochemical properties of gallium and strontium-substituted manganese ferrites","authors":"F.J. Hernández-Castillo,&nbsp;D.A. Cortés-Hernández,&nbsp;J.C. Escobedo-Bocardo","doi":"10.1016/j.matchemphys.2025.130623","DOIUrl":"10.1016/j.matchemphys.2025.130623","url":null,"abstract":"<div><div>The feasibility of synthesizing Mn<sub>1-x</sub>Sr<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> and Mn<sub>0.95-x</sub>Ga<sub>0.05</sub>Sr<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> (x = 0, 0.05, 0.10, 0.15, 0.20) by both coprecipitation and sol-gel routes, has been demonstrated. In all the cases, a single crystalline phase, was detected. This phase corresponds to an inverse spinel structure. Crystallite size was larger for the samples obtained by sol-gel (15–19 nm) than that of the samples obtained by coprecipitation (10–13 nm). The hysteresis loops indicated that ferrites showed a behavior close to that of the superparamagnetic materials. Higher saturation magnetization (M<sub>s</sub>) values were observed for the coprecipitation synthesized samples, exhibiting values of up to 67 emu/g for Mn<sub>0.90</sub>Ga<sub>0.05</sub>Sr<sub>0.05</sub>Fe<sub>2</sub>O<sub>4</sub>. On the other hand, the lower remanent magnetization (M<sub>r</sub>) and coercive field (H<sub>c</sub>) values were observed for the samples obtained by sol-gel. The heating ability of the sol-gel synthesized ferrites was considerably higher than that observed for the samples obtained by coprecipitation, reaching temperatures of up to 73 °C for the aqueous suspension containing 10 mg of Mn<sub>0.80</sub>Ga<sub>0.05</sub>Sr<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub>/mL. The Fourier transform infrared spectroscopy (FTIR) results showed the presence of absorption bands corresponding to C–O, C–H–C and C<img>C, which may indicate that the ferrites obtained by sol-gel are either partial coated or functionalized. The incorporation of Ga and Sr into the crystalline structure of the manganese ferrite was demonstrated. Finally, polycrystalline spheric nanoparticles, with an average size of 18 nm, were obtained for the sol-gel synthesized Mn<sub>0.80</sub>Ga<sub>0.05</sub>Sr<sub>0.15</sub>Fe<sub>2</sub>O<sub>4</sub>. The nanoparticles obtained by both methods show the heating ability required for magnetic hyperthermia treatment.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"337 ","pages":"Article 130623"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526678","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}
引用次数: 0
Synergistic effects of graphene nanosheets on the microstructure, hardness and tribological performance of Al/WC nanocomposites fabricated by flake powder metallurgy
IF 4.3 3区 材料科学
Materials Chemistry and Physics Pub Date : 2025-02-25 DOI: 10.1016/j.matchemphys.2025.130597
Mohsen Saremi Ghareh Gol, Abolfazl Malti, Farshad Akhlaghi
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