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3D-printed calcium magnesium silicates: A mini-review 三维打印硅酸钙镁:微型综述
Pub Date : 2024-03-29 DOI: 10.53063/synsint.2024.41210
Aidin Doroudi, P. Mahapatra, Fatemeh Bakhshi
Calcium magnesium silicates (CMS) represent a class of minerals with diverse applications in fields ranging from geology to materials science. With the advent of additive manufacturing technologies, particularly 3D printing, novel opportunities have emerged for the synthesis and utilization of CMS-based materials. In this mini-review, we provide a through overview of recent advancements in the 3D printing of CMS compounds, including diopside (DPS), bredigite (BR), and akermanite (AKT). We discuss the synthesis methods, properties, and potential applications of 3D-printed CMS materials, with a focus on their role in biomedical applications. Furthermore, we highlight challenges and prospects in the field, emphasizing the importance of continued research and innovation in harnessing the full potential of 3D-printed CMS materials.
硅酸钙镁(CMS)是一类矿物,在地质学和材料科学等领域有着广泛的应用。随着增材制造技术,特别是三维打印技术的出现,合成和利用基于 CMS 的材料出现了新的机遇。在这篇微型综述中,我们将概述 CMS 化合物 3D 打印的最新进展,包括透辉石 (DPS)、红柱石 (BR) 和阿克曼石 (AKT)。我们讨论了三维打印 CMS 材料的合成方法、特性和潜在应用,重点关注它们在生物医学应用中的作用。此外,我们还强调了该领域的挑战和前景,强调了持续研究和创新对于充分发挥三维打印 CMS 材料潜力的重要性。
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引用次数: 0
Solid-solution phase formation rules for high entropy alloys: A thermodynamic perspective 高熵合金的固溶相形成规则:热力学视角
Pub Date : 2024-03-29 DOI: 10.53063/synsint.2024.41192
Samaneh Mamnooni, Ehsan Borhani, Hassan Heydari
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引用次数: 0
A review of synthesis strategies for nickel cobaltite-based composites in supercapacitor applications 超级电容器应用中镍钴铁基复合材料合成策略综述
Pub Date : 2024-03-26 DOI: 10.53063/synsint.2024.41209
Yalda Tarpoudi Baheri, Amir Mahdi Homayounfard
Supercapacitors (SCs), known for their exceptional power and reasonably high energy densities, long lifespan, and lower production costs, have emerged as an ideal solution to meet the growing demand for various energy storage applications. The characteristics of supercapacitors are greatly influenced by means of the choice of electrode materials, developing novel electrode materials a focal point for extensive research in the field of high-performance supercapacitors. In recent years, NiCo2O4 has garnered increasing attention as a supercapacitor electrode material owing to its notable edges, including high theoretical capacity, low cost, abundant availability, and ease of synthesizing. However, the performance of NiCo2O4 is hindered by its low electrical conductivity and limited surface area, leading to significant capacity deterioration. Therefore, it is imperative to systematically and comprehensively summarize the advancements in comprehending and adjusting NiCo2O4-based electrodes from multiple perspectives. The present review primarily focuses on the synthetic approaches employed to produce NiCo2O4 nanomaterials with diverse morphologies for their application in supercapacitors. This review article provides a comprehensive overview of the synthesis approaches utilized for developing nickel cobaltite-based composites tailored for supercapacitor applications. Various synthesis methods, including sol-gel, hydrothermal, and co-precipitation techniques, are discussed in detail, emphasizing the importance of optimizing synthesis parameters to enhance the electrochemical performance of the composites. The potential applications of nickel cobaltite-based composites in supercapacitors are explored, highlighting their promising prospects in energy storage technologies. Future research directions in this field are also discussed.
超级电容器(SC)以其超强的功率、合理的高能量密度、较长的使用寿命和较低的生产成本而著称,已成为满足各种储能应用日益增长的需求的理想解决方案。电极材料的选择在很大程度上影响着超级电容器的特性,因此开发新型电极材料成为高性能超级电容器领域广泛研究的焦点。近年来,由于镍钴氧化物具有理论容量高、成本低、供应充足、易于合成等显著优势,作为超级电容器电极材料受到越来越多的关注。然而,镍钴氧化物的低导电性和有限的表面积阻碍了其性能的发挥,导致容量显著下降。因此,有必要从多个角度系统、全面地总结在理解和调整基于镍钴氧化物的电极方面取得的进展。本综述主要关注生产具有不同形态的 NiCo2O4 纳米材料的合成方法,以便将其应用于超级电容器。本综述文章全面概述了用于开发超级电容器应用的镍钴基复合材料的合成方法。文章详细讨论了各种合成方法,包括溶胶-凝胶、水热和共沉淀技术,强调了优化合成参数对提高复合材料电化学性能的重要性。还探讨了镍钴铁基复合材料在超级电容器中的潜在应用,强调了其在储能技术中的广阔前景。此外,还讨论了该领域未来的研究方向。
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引用次数: 0
Effects of die geometry and insulation on the energy and electrical parameters analyses of spark plasma sintered TiC ceramics 模具几何形状和绝缘对火花等离子烧结 TiC 陶瓷的能量和电气参数分析的影响
Pub Date : 2024-03-24 DOI: 10.53063/synsint.2024.41172
Milad Sakkaki, Milad Foroutani, Peyman Zare
This work conducts a numerical simulation to investigate the temperature and electric current distribution during the spark plasma sintering (SPS) process using the finite element method (FEM) carried out in COMSOL Multiphysics software. The main goal is to optimize the SPS process for titanium carbide (TiC) ceramics, with a particular focus on the effects of insulation and die geometry (height and thickness). For the TiC material, the ideal sintering temperature is set at 2000 °C. The study analyzes eight case studies, involving a base case, an insulating case, and six cases with various thicknesses and heights, in order to evaluate the effectiveness of the suggested optimization. The results show that using insulation on the die surface reduces heat transfer from the die surface significantly, which leads to a 63% decrease in input power consumption when compared to the basic scenario. Based on a correlation study between energy and electricity, increasing die thickness raises the cross-sectional area of the electric current, which raises the amount of electric power required to attain the 2000 °C sintering temperature. The results indicate the temperature distribution in the sample is more sensitive to changes in die height than to changes in die thickness.
本研究使用 COMSOL Multiphysics 软件中的有限元法 (FEM) 进行数值模拟,研究火花等离子烧结 (SPS) 过程中的温度和电流分布。主要目标是优化碳化钛(TiC)陶瓷的 SPS 工艺,尤其关注绝缘和模具几何形状(高度和厚度)的影响。对于 TiC 材料,理想的烧结温度设定为 2000 ℃。研究分析了八个案例,包括一个基本案例、一个绝缘案例和六个具有不同厚度和高度的案例,以评估建议优化的有效性。结果表明,在芯片表面使用隔热材料可显著减少芯片表面的热传递,与基本方案相比,输入功耗降低了 63%。根据能量和电力之间的相关性研究,增加模具厚度会增加电流的横截面积,从而增加达到 2000 °C 烧结温度所需的电力。结果表明,样品中的温度分布对模具高度的变化比模具厚度的变化更为敏感。
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引用次数: 0
Effects of cerium oxide and cerium sulfate on the optical behavior of synthesized garnet glass ceramics 氧化铈和硫酸铈对合成石榴石玻璃陶瓷光学行为的影响
Pub Date : 2024-03-24 DOI: 10.53063/synsint.2024.41186
A. Faeghinia
In this study, the YAG silicate glasses containing the cerium sulfate and cerium oxide salts (17YO3-33Al2O3-40SiO2-2AlF3-3NaF-2CeO2-3B2O3), separately were produced by melting method and glass ceramics were produced by heat treatment of base glasses. According to Photo Luminescence spectrums of both glasses there were emissions in the range of 466 and 435 nm wavelengths related to cerium ions. It was shown that by heating treatment, garnet crystal (in sulfated sample) formed less than the sample with cerium oxide. The emission spectra of both glass-ceramics, when excited at 240 nm, fall within the wavelength range of 460 nm. Also, the 534 and 660 nm emissions wavelengths were obtained by 340 nm wavelength excitation. Heat treatments were done by oxide atmosphere in tubular furnace (single step), SPS sintered powder and in hydrogen atmosphere (by two steps heating). According to XRD results the 24 hrs. heat treating time and the 1060 °C temperature affect the entry of cerium into the garnet structure. Finally, by comparing the spectroscopic results the optical response of the garnet glass-ceramic synthesized in the hydrogen atmosphere was obtained at 400 nm wavelength that indicated this garnet can be applied in the LED industry.
本研究采用熔融法分别制备了含有硫酸铈盐和氧化铈盐的 YAG 硅酸盐玻璃(17YO3-33Al2O3-40SiO2-2AlF3-3NaF-2CeO2-3B2O3),并通过对基底玻璃进行热处理制备了玻璃陶瓷。根据这两种玻璃的光致发光光谱,在 466 和 435 纳米波长范围内有与铈离子有关的发射。结果表明,通过加热处理,石榴石晶体(在硫酸盐样品中)的形成比氧化铈样品少。两种玻璃陶瓷在 240 纳米波长下激发时的发射光谱都在 460 纳米波长范围内。此外,在 340 纳米波长的激发下,还可获得 534 纳米和 660 纳米的发射光谱。热处理分别在管式炉(单步)、SPS 烧结粉末和氢气环境(两步加热)中进行。根据 XRD 结果,24 小时的热处理时间和 1060 °C 的温度会影响铈进入石榴石结构。最后,通过比较光谱结果,在氢气环境中合成的石榴石玻璃陶瓷在 400 纳米波长处获得了光学响应,表明这种石榴石可应用于 LED 行业。
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引用次数: 0
Synthesis and doping of high-temperature resistant spinel nano pigments: A review 耐高温尖晶石纳米颜料的合成与掺杂:综述
Pub Date : 2024-03-24 DOI: 10.53063/synsint.2024.41191
Rayehe Tavakolipour, Reza Pournajaf, Egle Grazenaite
Spinel nano-pigments are high-performance super small particles, combining the stable properties of the spinel structures with the high activity of Nanomaterials. While entrapment of highly toxic yet beautiful chromophores in the spinel structure diminishes the toxicity and improves the thermal resistance, a high surface area provided by the nano-scale pigments results in a uniform bright coating with a sufficiently high color strength and enhanced light transmission. Although the spinel nano pigments are promising for the coating and ceramic industries, the applications are limited, mostly due to the required high sintering temperature. Various synthesis processes have been tried for these pigments with the sol-gel method being the most frequent one. Many elements have been considered as dopants for these spinel systems to enhance, change, or improve the optical and physical properties. This comprehensive review aims to summarize the work done in this field, covering almost 20 years of research dedicated to the synthesis and doping of spinel nano pigments.
尖晶石纳米颜料是一种高性能的超小颗粒,结合了尖晶石结构的稳定特性和纳米材料的高活性。在尖晶石结构中夹杂剧毒但美丽的发色团可以降低毒性并提高耐热性,而纳米级颜料提供的高比表面积则可以形成均匀明亮的涂层,并具有足够高的色彩强度和更强的透光性。尽管尖晶石纳米颜料在涂料和陶瓷工业中大有可为,但其应用却很有限,主要原因是需要较高的烧结温度。这些颜料的合成工艺多种多样,其中以溶胶-凝胶法最为常见。许多元素都被视为这些尖晶石体系的掺杂剂,以增强、改变或改善其光学和物理性能。本综述旨在总结该领域近 20 年来在尖晶石纳米颜料的合成和掺杂方面所做的工作。
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引用次数: 0
Editorial to celebrate the 3rd anniversary of Synthesis and Sintering 庆祝《合成与烧结》创刊三周年的社论
Pub Date : 2024-03-23 DOI: 10.53063/synsint.2024.41195
Mehdi Shahedi Asl
Serving as a member of the editorial board of Synthesis and Sintering and the founder of the Synsint Research Group is undoubtedly a great honor for me. I am happy to witness the significant growth of this journal as a global platform that publishes scientific articles with high standards. As we celebrate the third anniversary of Synthesis and Sintering, we are proud to present to readers a collection of high-quality articles written by leading experts and young researchers in the fields of synthesis and sintering. These articles, which have been published regularly in the past three years, have shown the commitment of the journal and its management team to the development of science and research in these fields. In this editorial article, the goals of the journal, its achievements and our prospects are presented.
作为《合成与烧结》杂志的编委会成员和Synsint研究小组的创始人,我无疑深感荣幸。我很高兴能见证该期刊作为一个发表高水平科学文章的全球平台所取得的长足发展。在庆祝《合成与烧结》创刊三周年之际,我们很荣幸地向读者推出由合成与烧结领域的顶尖专家和年轻研究人员撰写的高质量文章集。这些文章在过去三年中定期发表,表明了期刊及其管理团队对这些领域的科学和研究发展的承诺。在这篇社论文章中,我们将介绍期刊的目标、成就和前景。
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引用次数: 0
A simulative approach to obtain higher temperatures during spark plasma sintering of ZrB2 ceramics by geometry optimization 通过几何优化在 ZrB2 陶瓷的火花等离子烧结过程中获得更高温度的模拟方法
Pub Date : 2023-12-17 DOI: 10.53063/synsint.2023.34178
Milad Sakkaki, Mohsen Naderi, M. Vajdi, Farhad Sadegh Moghanlou, Ali Tarlani Beris
This study provides a detailed analysis of the Spark Plasma Sintering (SPS) process for Zirconium Diboride (ZrB2) ceramics, utilizing the finite element method in COMSOL Multiphysics. The focus is on understanding the temperature distribution during the SPS of a ZrB2 sample in a graphite die. Heat diffusion equations, augmented with Joule heating considerations, are utilized to simulate temperature variations within the system over time. Critical boundary conditions at the system's extremities are modeled as convection cooling. The Analysis of Variance (ANOVA) reveals that the diameter of the sample is the most significant factor influencing the peak temperature at the center of the ZrB2 sample. It is found that the sample diameter's variance accounts for a predominant impact on temperature, markedly more than other factors such as the die's outer diameter and sample thickness. Notably, the standard deviation of the temperature in the axial direction across all samples is less than 4 °C, a value that is statistically minor in comparison to the sintering temperatures, which are around 2000 °C. These findings are instrumental in providing an in-depth understanding of the SPS process, which is essential for the optimization of sintering parameters for ZrB2 ceramics.
本研究利用 COMSOL Multiphysics 中的有限元方法,对二硼化锆(ZrB2)陶瓷的火花等离子烧结(SPS)工艺进行了详细分析。重点是了解石墨模中 ZrB2 样品在 SPS 过程中的温度分布。利用热扩散方程,并考虑焦耳加热因素,模拟系统内温度随时间的变化。系统末端的临界边界条件被模拟为对流冷却。方差分析 (ANOVA) 表明,样品直径是影响 ZrB2 样品中心峰值温度的最重要因素。研究发现,样品直径的方差对温度的影响最大,明显高于模具外径和样品厚度等其他因素。值得注意的是,所有样品轴向温度的标准偏差均小于 4 °C,与烧结温度(约 2000 °C)相比,这一数值在统计学上微不足道。这些发现有助于深入了解 SPS 过程,这对优化 ZrB2 陶瓷的烧结参数至关重要。
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引用次数: 0
Characterization of nano-hydroxyapatite synthesized from eggshells for absorption of heavy metals 利用蛋壳合成的纳米羟基磷灰石在吸收重金属方面的表征
Pub Date : 2023-12-17 DOI: 10.53063/synsint.2023.34190
Leila Karamzadeh, E. Salahi, I. Mobasherpour, Armin Rajabi, Masomeh Javaheri
This paper presents the synthesis of nano hydroxyapatite using deposition process and eggshell as a cost-effective starting material. This study investigates its potential as an effective adsorbent for heavy metals. Various analytical techniques, including X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), Fourier transform infrared (FTIR), surface area measurement (BET), and scanning electron microscopy (SEM), were used to characterize the composition. The main objective was to evaluate the suitability of the synthesized hydroxyapatite as a heavy metal adsorbent in aqueous solutions. The results of this research showed that hydroxyapatite, which has a particle size in the range of nanometers and a specific area of 150 square meters per gram, and has the necessary properties for absorption, was successfully processed. The results showed that the prepared samples had a uniform mesopore distribution between 2 and 3 nm and 6 and 20 nm.
本文介绍了利用沉积工艺和蛋壳作为成本效益高的起始材料合成纳米羟基磷灰石的方法。本研究探讨了其作为重金属有效吸附剂的潜力。研究采用了多种分析技术,包括 X 射线衍射 (XRD)、X 射线荧光光谱 (XRF)、傅立叶变换红外 (FTIR)、表面积测量 (BET) 和扫描电子显微镜 (SEM) 来表征其成分。主要目的是评估合成的羟基磷灰石作为水溶液中重金属吸附剂的适用性。研究结果表明,羟基磷灰石的粒度在纳米范围内,每克的比面积为 150 平方米,具有吸附所需的特性。结果表明,制备的样品在 2 至 3 纳米和 6 至 20 纳米之间具有均匀的中孔分布。
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引用次数: 0
Unlocking the potential of aromatase inhibitors: recent advances in drug design, synthesis, docking activity, and in vitro bioactivity evaluations 发掘芳香化酶抑制剂的潜力:药物设计、合成、对接活性和体外生物活性评估的最新进展
Pub Date : 2023-12-02 DOI: 10.53063/synsint.2023.34183
Niloufar Moharrer Navaei, Narvan Moharrer Navaei
Breast cancer, a global health concern claiming approximately 685,000 lives in 2020, necessitates continual advancements in therapeutic strategies. Estrogen and aromatase play pivotal roles in hormone-responsive breast cancer, with 80% of patients exhibiting estrogen receptor-positive tumors. Aromatase inhibitors (AIs), notably non-steroidal inhibitors like anastrozole and letrozole, have significantly improved outcomes, yet challenges persist, including side effects. This review focuses on recent developments in AIs, exploring xanthone derivatives, imidazole derivatives, and curcumin derivatives as potential inhibitors of aromatase. Molecular docking studies, employing Auto Dock and other tools, reveal the binding affinities and interactions of these compounds with the aromatase enzyme. Among xanthones, Erythrommone emerges as a potent inhibitor, holding promise for clinical trials. Imidazole derivatives, synthesized through the Debus-Radziszewski reaction, demonstrate anticancer potential, with compounds like 1a exhibiting superior efficacy against MCF7 cells. ADME-Tox analyses indicate promising drug-likeness but reveal potential mutagenic effects and environmental impacts. Curcumin derivatives, particularly 1,5-diaryl-1,4-pentadien-3-ones, present alternatives to address curcumin's bioavailability challenges. A study of 25 compounds (DKC) identifies DKC-10 as a potent inhibitor, outperforming established breast cancer drugs in terms of binding affinity and interactions with aromatase and ERα+ receptors. These findings underscore the importance of exploring diverse chemical structures in developing AIs, paving the way for more effective and well-tolerated therapeutics. The integration of computational techniques, such as molecular docking studies, accelerates drug discovery by predicting interactions at the molecular level. Overall, this comprehensive review provides valuable insights into the evolving landscape of aromatase inhibitors, offering a roadmap for future research and the development of advanced breast cancer therapeutics.
乳腺癌是一个全球健康问题,2020年约有68.5万人因此丧生,因此必须不断改进治疗策略。雌激素和芳香化酶在激素反应性乳腺癌中起关键作用,80%的患者表现为雌激素受体阳性肿瘤。芳香酶抑制剂(AIs),特别是非甾体抑制剂,如阿那曲唑和来曲唑,已经显著改善了结果,但挑战仍然存在,包括副作用。本文综述了AIs的最新进展,探索了山酮衍生物、咪唑衍生物和姜黄素衍生物作为芳香化酶的潜在抑制剂。利用Auto Dock等工具进行分子对接研究,揭示了这些化合物与芳香酶的结合亲和力和相互作用。在山酮类药物中,红胞酮是一种有效的抑制剂,有望用于临床试验。通过Debus-Radziszewski反应合成的咪唑衍生物显示出抗癌潜力,其中1a等化合物对MCF7细胞表现出优异的疗效。ADME-Tox分析显示有希望的药物相似,但揭示潜在的诱变效应和环境影响。姜黄素衍生物,特别是1,5-二芳基-1,4-戊二烯-3- 1,提供了解决姜黄素生物利用度挑战的替代方案。一项针对25种化合物(DKC)的研究发现,DKC-10是一种有效的抑制剂,在与芳香化酶和ERα+受体的结合亲和力和相互作用方面优于现有的乳腺癌药物。这些发现强调了探索不同化学结构在开发ai中的重要性,为更有效和耐受性良好的治疗铺平了道路。计算技术的整合,如分子对接研究,通过预测分子水平上的相互作用,加速了药物的发现。总的来说,这篇全面的综述为芳香化酶抑制剂的发展前景提供了有价值的见解,为未来的研究和晚期乳腺癌治疗的发展提供了路线图。
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引用次数: 0
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Synthesis and Sintering
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