Materials Chemistry and Physics最新文献_第8页

Exploring novel anticorrosive applications: Solid-state synthesis and characterization of Li2CuP2O7 and Na2CuP2O7 pyrophosphates 探索新型防腐应用：Li2CuP2O7 和 Na2CuP2O7 焦磷酸盐的固态合成与表征

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-17 DOI: 10.1016/j.matchemphys.2024.129868

{"title":"Exploring novel anticorrosive applications: Solid-state synthesis and characterization of Li2CuP2O7 and Na2CuP2O7 pyrophosphates","authors":"","doi":"10.1016/j.matchemphys.2024.129868","DOIUrl":"10.1016/j.matchemphys.2024.129868","url":null,"abstract":"<div>This work shows the importance of inorganic materials Li2CuP2O7 and Na2CuP2O7, especially the effect of Li and Na atoms, in their use as inhibitors that preserve Mild steel in 1.0 M HCl solution. Lithium and Sodium copper (II) pyrophosphate crystals were synthesized through solid-state reaction and characterized using Infrared Spectroscopy technique (IR), as well as X-ray diffraction (XRD). The infrared spectrum of compounds Li2CuP2O7 and Na2CuP2O7 was captured and interpreted, revealing a bent POP bridging angle within these compounds. Furthermore, the inhibitory effect of these pyrophosphates on Mild steel corrosion in a 1.0 M HCl solution was studied. During this investigation, electrochemical techniques alongside surface examination through SEM and EDX. The experimental findings demonstrated that Li2CuP2O7 and Na2CuP2O7 act as effective inhibitors, with inhibition efficiency (ηPP %) rising as the inhibitor concentration increases. At a concentration of 10−3 M, Li2CuP2O7 exhibited a remarkable inhibition efficiency of 93 %, which appears to be mixed-type inhibitors.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142011501","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

Graphite sintered strontium praseodymium titanate perovskite for thermoelectric applications 用于热电应用的石墨烧结钛酸锶镨包晶石

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-17 DOI: 10.1016/j.matchemphys.2024.129866

{"title":"Graphite sintered strontium praseodymium titanate perovskite for thermoelectric applications","authors":"","doi":"10.1016/j.matchemphys.2024.129866","DOIUrl":"10.1016/j.matchemphys.2024.129866","url":null,"abstract":"<div>Here Pr3+ was introduced in the Sr2+ site in Sr1-x PrxTiO3 (x = 0.05, 0.075, 0.10, 0.125, 0.15, 0.20) system followed by two step graphite burial sintering. Powder reduction helps to increase the carrier concentration and the doped sample pellet reduction minimizes Double Schottky Barrier generated by strontium and oxygen vacancies at grain boundary by regulating the point defects. Samples with x ≥ 0.10 shows splitting and asymmetry of (200) and (310) peak in XRD indicating structural transformation from cubic to tetragonal phase. XPS spectra of the samples confirmed the formation of oxygen vacancies and reduction of Ti4+ to Ti3+ induced by graphite burial sintering resulting in enhanced carrier concentration. A maximum power factor of 1.8 mW/mK2 was obtained for Sr0.9 Pr0.1TiO3 samples at 673 K. Reduced thermal conductivity due to porous structure, Pr defect centers, oxygen vacancy clusters together with enhanced power factor lead to a maximum figure of merit 0.33, making this an ideal candidate as n type legs in thermoelectric generators.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142011503","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

The effect of Ar+ and N+ ion irradiation on the thermally induced evolution of the structural and magnetic properties of Co/Pt and Pt/Co bilayered stacks Ar+和N+离子辐照对Co/Pt和Pt/Co双层叠层结构和磁性能热诱导演化的影响

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-17 DOI: 10.1016/j.matchemphys.2024.129862

{"title":"The effect of Ar+ and N+ ion irradiation on the thermally induced evolution of the structural and magnetic properties of Co/Pt and Pt/Co bilayered stacks","authors":"","doi":"10.1016/j.matchemphys.2024.129862","DOIUrl":"10.1016/j.matchemphys.2024.129862","url":null,"abstract":"<div>The application of Co–Pt thin films as functional elements of novel nanoelectronics and spintronics devices requires the formation of a homogeneous ferromagnetic CoPt phase with tunable magnetic properties. A diffusion-controlled synthesis of this ferromagnetic phase can be implemented through the annealing of deposited Co/Pt bilayers. Apart from thermal treatment, both structural and magnetic properties of such layered stacks can be affected by ion preirradiation. In this work, we, therefore, studied the effect of a two-stage process consisting of preirradiation with 110 keV Ar+/N+ ions followed by post-annealing in vacuum at 550°С for 30 min on the evolution of the structural, chemical, and magnetic properties of Co/Pt/substrate and Pt/Co/substrate heterostructures. The results obtained for such two-stage processing were compared to those received after single-stage vacuum annealing. It was found that when ion preirradiation is followed by annealing, the diffusion-driven intermixing of Pt and Co leading to the formation of the ferromagnetic Co–Pt phase is slowed down compared to the non-irradiated samples, which is associated with the barrier effect of implanted projectiles. Furthermore, we demonstrate that preirradiation does not compromise the magnetic properties of the samples. For instance, preirradiation leads to a coercivity increase of up to 38 % compared to the non-irradiated annealed samples which is attributed to the presence of remaining paramagnetic Pt between the grains of the ferromagnetic A1-CoPt phase. We demonstrate that the applied two-stage processing (consisting of ion preirradiation followed by thermal annealing) of magnetic thin films is a promising approach for tailoring their magnetic properties such as the in-plane coercivity, saturation, and effective magnetization.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0254058424009908/pdfft?md5=48ea418d483f340f4eddbec492f24bc7&pid=1-s2.0-S0254058424009908-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040374","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

Nanocomposite-modified nanopores: A promising platform for selective detection of copper ions 纳米复合材料修饰的纳米孔：用于选择性检测铜离子的前景广阔的平台

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-16 DOI: 10.1016/j.matchemphys.2024.129824

{"title":"Nanocomposite-modified nanopores: A promising platform for selective detection of copper ions","authors":"","doi":"10.1016/j.matchemphys.2024.129824","DOIUrl":"10.1016/j.matchemphys.2024.129824","url":null,"abstract":"<div>This research introduces an innovative platform designed for the selective detection of copper (II) (Cu2+) ions, employing a singular nanopore embedded within a 12 <math><mrow><mi>μ</mi></mrow></math> m-thick polyethylene terephthalate (PET) membrane. The track-etched nanopore was subsequently modified with nanomaterials in an allylamine hydrochloride (PAH)-modified asymmetric nanopore through electrostatic interactions. The nanomaterials included copper oxide (CuO), graphene oxide (GO), and their composite (GO/CuO), were synthesized using wet chemistry, and their structures and optical properties were thoroughly investigated using x-ray diffraction and diffuse reflectance spectroscopy. In the distinctive feature of the platform, Cu2+ ions gain access to coordination sites across a broad surface covered by the immobilized nanomaterials, facilitating effective binding. The selective response of GO/CuO modified pores towards Cu2+ ions was notably observed through ion transportation (I –V) studies, surpassing the response of unmodified nanopores and those modified with CuO alone. This selective behavior was demonstrated in the presence of various monovalent and divalent competing ions. Quantitative assessment of I –V studies was conducted by evaluating the intrinsic rectification ratio of asymmetric nanopores, providing a robust measure of platform's efficacy. Furthermore, we identified the optimal pH for detecting Cu2+ ions as 7, enhancing the specificity and accuracy of our method.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141993229","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

Optoelectronic and structural properties of bulk cubic perovskite RbTaO3 and surface (0 0 1) for optoelectronic and spintronics applications 用于光电和自旋电子学应用的块状立方包晶 RbTaO3 和表面 (0 0 1) 的光电和结构特性

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-16 DOI: 10.1016/j.matchemphys.2024.129778

{"title":"Optoelectronic and structural properties of bulk cubic perovskite RbTaO3 and surface (0 0 1) for optoelectronic and spintronics applications","authors":"","doi":"10.1016/j.matchemphys.2024.129778","DOIUrl":"10.1016/j.matchemphys.2024.129778","url":null,"abstract":"<div>We used first-principles density functional theory (DFT) to study the optical, electronic, and structural properties of RbTaO3 cubic perovskite in both bulk and surface (0 0 1) forms. The RbTaO3 bulk system exhibited semiconducting behaviour with a band gap (Eg) of 2.20 eV. It showed weak reflectivity, excellent optical conductivity, and high absorption of incident energetic photons, indicating its potential for optoelectronic applications. For the surface (0 0 1), two RbO and TaO2 terminations were constructed. We calculate the atomic displacement (ΔZ) and surface energy (Esurf) for both terminations. The RbO- and TaO2-(0 0 1) terminated surfaces appeared half-metallic ferromagnetic (HMF) with a spin magnetic moment of integer value 1.00 μβ and fully spin polarization (SP) 100 %. The Eg for RbO- and TaO2-terminations were 2.60 eV and 2.30 eV, respectively, suggesting their potential for spintronics. We also analysed and compared the optical properties and atomic populations (Q) and their variation (ΔQ) for (0 0 1)-RbTaO3 terminations with the bulk system.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142011502","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

Water-resistant properties improvement of aluminium oxide nanoparticles treated kraft paper by sparking process 通过火花工艺改善氧化铝纳米粒子处理牛皮纸的防水性能

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-15 DOI: 10.1016/j.matchemphys.2024.129823

{"title":"Water-resistant properties improvement of aluminium oxide nanoparticles treated kraft paper by sparking process","authors":"","doi":"10.1016/j.matchemphys.2024.129823","DOIUrl":"10.1016/j.matchemphys.2024.129823","url":null,"abstract":"<div>This study aims to improve the hydrophobicity of non-sizing Kraft paper (KP) surfaces using nanoparticle coating through the sparking process. The aluminium oxide nanoparticles (Al2O3 NPs) were used for surface modification on KP through the sparking process, optimizing with varying sparking cycles (5–20 times), annealing temperatures (60–120 °C), and annealing times (1–3 h). Then, the Al2O3 NPs treated KP were examined by XRD, FT–IR, SEM, EDX, and AFM, respectively. The water contact angle (CA) was used to examine the water-resistant properties of the treated KP. The treated KP with varying sparking cycles up to 15 times showed higher surface coverage and enhanced fine roughness surface on the treated KP. The fine roughness surface of KP induced hydrophobicity (126° of CA) on the surface of KP at 15 sparking cycles. Similarly, the higher CA for hydrophobicity surface on treated KP from varying temperatures and times of the annealing process was demonstrated at 120° for 3 h. Therefore, the treated KP with 15 times of sparking cycle, annealing temperature at 120 °C for 3 h was defined as the optimized condition in this work. Furthermore, the developments of hydrophobicity and superhydrophobicity on the treated KP with CA at 135 and 155° were observed for the non-sizing and sizing KP, respectively. This indicated that the increased surface roughness and reduced surface energy of the treated KP simultaneously delayed the water absorption times on the KP surface. Consequently, the nano-treating of Al2O3 NPs using the sparking process shows the promising feature of inducing superhydrophobicity on the KP surface, which can produce a water-repellent corrugated box as an alternative packaging material.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141991285","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

PAN-assisted preparation of Bi2MoO6 with enhanced photocatalytic CO2 reduction performance PAN 辅助制备具有更强光催化二氧化碳还原性能的 Bi2MoO6

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-15 DOI: 10.1016/j.matchemphys.2024.129860

{"title":"PAN-assisted preparation of Bi2MoO6 with enhanced photocatalytic CO2 reduction performance","authors":"","doi":"10.1016/j.matchemphys.2024.129860","DOIUrl":"10.1016/j.matchemphys.2024.129860","url":null,"abstract":"<div>In this study, to improve photocatalytic CO2 reduction efficiency of Bi2MoO6-based photocatalysts, Bi2MoO6 (BMO) was synthesized via a solvothermal method with the assistance of polyacrylonitrile (PAN). Scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques were utilized to evaluate the microstructures, phases, and elemental compositions of the samples. Additionally, the separation and migration efficiency of photogenerated charge pairs during the photocatalytic process were analyzed in detail using surface photovoltage spectroscopy (SPS), photoluminescence spectrum (PL), transient photocurrent density (TPR), and electrochemical impedance spectroscopy (EIS). In comparison with the reference sample, the specific surface area of 2 % BMO (mass ratios of PAN/Bi(NO3)3·5H2O is 2 %) has been increased to 39.6 m2/g, which increases by 0.9 times compared to the reference sample. The successful introduction of oxygen vacancies (OVs) in Bi2MoO6 was confirmed by low-temperature electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS), and suitable OVs is favorable for separation and migration of the photogenerated carriers. The experimental results indicate that the separation efficiency of photogenerated carriers in the PAN-BMO photocatalyst is significantly boosted in contrast to the reference sample. Furthermore, all photocatalysts exhibit higher photocatalytic CO2 reduction activity than the reference sample. It is noteworthy that the 2 % BMO sample shows the highest photocatalytic CO2 reduction activity, and the average photocatalytic CO2 reduction yield over the 2 % BMO reaches 2.16 μmol g−1 h−1, which is 2.25 times higher than that on the reference sample (0.96 μmol g−1 h−1). In view of the findings, photocatalytic CO2 reduction mechanism for BMO with OVs was rationally proposed.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141993227","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

Construction of micro/nano-sized and multilayered TiO2-Based bioceramics coated with zein and calcium phosphate 构建涂有玉米蛋白和磷酸钙的微米/纳米级多层 TiO2 生物陶瓷

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-15 DOI: 10.1016/j.matchemphys.2024.129865

{"title":"Construction of micro/nano-sized and multilayered TiO2-Based bioceramics coated with zein and calcium phosphate","authors":"","doi":"10.1016/j.matchemphys.2024.129865","DOIUrl":"10.1016/j.matchemphys.2024.129865","url":null,"abstract":"<div>TiO2-based bioceramics have been widely studied because of their biocompatibility, chemical stability, photocatalytic properties, and controllable size and shape. Surface modification techniques for TiO2 have been utilized to enhance its mechanical and biological characteristics for future applications in dentistry, implants, and tissue engineering. In this study, we developed a simplified method for constructing TiO2-based bioceramics coated with Zein and calcium phosphate. The newly synthesized TiO2-based composite material was micro/nano-sized, multilayered, and exhibited a bone-like apatite-grown structure. The proposed modification method enabled the feasible design of materials with natural bone-like components on the surface, thereby facilitating effective osteogenic differentiation. Additionally, improved biodegradability was confirmed by electrochemical anti-corrosion analysis. The successfully prepared materials mitigated some issues related to cytotoxicity and anti-angiogenesis, while simultaneously enhancing cellular interactions. The capability to stimulate angiogenesis in HUVECs and osteogenic differentiation in MC3T3-E1 cells was demonstrated through in vitro tests. Thus, this work presents a simplified and promising coating strategy using zein on the surface of TiO2 nanoparticles, followed by optimal bone-like apatite formation, offering potential biomaterials for treating bone defects and traumatic injuries.</div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141998608","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

Dual-responsive smart nano-platform targeting peptide modifications synergistically enhances multimodal therapy for liver cancer 靶向肽修饰的双响应智能纳米平台可协同增强肝癌的多模式疗法

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-15 DOI: 10.1016/j.matchemphys.2024.129863

引用次数: 0

A novel approach for zero material loss (zero flash) and uniform cross-section during friction stir welding of dissimilar thickness Cu and Al alloys 在对厚度不同的铜合金和铝合金进行搅拌摩擦焊接时实现零材料损耗（零飞边）和均匀截面的新方法

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2024-08-15 DOI: 10.1016/j.matchemphys.2024.129859

引用次数: 0