inorganic nanoparticle

无机纳米粒子
  • 文章类型: Editorial
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  • 文章类型: Journal Article
    在这次审查中,我们专注于一小部分的文献,涉及含有原始缺陷碳纳米结构(CNs)的材料,以及那些纳入含有碳原子的较大系统中的材料,杂原子,和无机成分。.简而言之,我们只讨论那些专注于与将扰动引入理想晶格结构的表面拓扑有关的结构缺陷的主题。晶体结构的无序可能在性质上有所不同,尺寸,和位置,显着改变了CNs或其杂化组合的物理和化学性质。我们主要关注使用微波(MW)辐照的方法,由于其简单性,它是合成和改性碳基固体材料的强大工具,在溶剂和固相进行反应的可能性,以及不同化学性质成分的存在。在这里,我们将强调使用MW辅助加热合成的优势,并指出所获得材料的结构对其物理和化学性质的影响。这是在使用MW辅助加热来修改CN结构的背景下全面总结研究的第一篇综述论文,注意其显著的普遍性和简单性。在最后一部分,我们强调了MW辅助加热在CNs中产生缺陷的作用,以及在设计其性能和应用中的意义。所提出的评论是总结科学家在这一研究领域取得的成就的宝贵资料。
    In this review, we focus on a small section of the literature that deals with the materials containing pristine defective carbon nanostructures (CNs) and those incorporated into the larger systems containing carbon atoms, heteroatoms, and inorganic components.. Briefly, we discuss only those topics that focus on structural defects related to introducing perturbation into the surface topology of the ideal lattice structure. The disorder in the crystal structure may vary in character, size, and location, which significantly modifies the physical and chemical properties of CNs or their hybrid combination. We focus mainly on the method using microwave (MW) irradiation, which is a powerful tool for synthesizing and modifying carbon-based solid materials due to its simplicity, the possibility of conducting the reaction in solvents and solid phases, and the presence of components of different chemical natures. Herein, we will emphasize the advantages of synthesis using MW-assisted heating and indicate the influence of the structure of the obtained materials on their physical and chemical properties. It is the first review paper that comprehensively summarizes research in the context of using MW-assisted heating to modify the structure of CNs, paying attention to its remarkable universality and simplicity. In the final part, we emphasize the role of MW-assisted heating in creating defects in CNs and the implications in designing their properties and applications. The presented review is a valuable source summarizing the achievements of scientists in this area of research.
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  • 文章类型: Journal Article
    胰腺癌是全球最致命的癌症类型之一,5年生存率低于5%。由于无法及时诊断,现有治疗方法缺乏疗效,创新疗法和新诊断方法的研究和开发对于提高生存率和降低死亡率至关重要。纳米医学作为药物输送和诊断的创新方法已经越来越重要,通过实施智能纳米载体系统开辟新的视野,可以以最佳浓度将药物输送到特定的组织或器官,提高治疗效果,减少全身毒性。各种材料,如脂质,聚合物,和无机材料已被用于获得纳米颗粒并开发用于胰腺癌治疗的创新药物递送系统。在这次审查中,讨论了基于纳米药物递送系统治疗胰腺癌的主要科学进展。还解决了这种递送系统在胰腺癌治疗中的优点和缺点。更重要的是,对迄今为止开发的不同类型的纳米载体和治疗策略进行了审查。
    Pancreatic cancer represents one of the most lethal cancer types worldwide, with a 5-year survival rate of less than 5%. Due to the inability to diagnose it promptly and the lack of efficacy of existing treatments, research and development of innovative therapies and new diagnostics are crucial to increase the survival rate and decrease mortality. Nanomedicine has been gaining importance as an innovative approach for drug delivery and diagnosis, opening new horizons through the implementation of smart nanocarrier systems, which can deliver drugs to the specific tissue or organ at an optimal concentration, enhancing treatment efficacy and reducing systemic toxicity. Varied materials such as lipids, polymers, and inorganic materials have been used to obtain nanoparticles and develop innovative drug delivery systems for pancreatic cancer treatment. In this review, it is discussed the main scientific advances in pancreatic cancer treatment by nano-based drug delivery systems. The advantages and disadvantages of such delivery systems in pancreatic cancer treatment are also addressed. More importantly, the different types of nanocarriers and therapeutic strategies developed so far are scrutinized.
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  • 文章类型: Journal Article
    纳米技术策略的使用是当前的热门话题,在化妆品行业中,该领域的研究已经显着增长。无机纳米粒子因其独特的物理化学性质而在这种情况下脱颖而出,特别是导致增加的折射率和吸收能力,使它们具有广泛的皮肤应用潜力,并使它们在皮肤药物和化妆品目的的研究中具有特殊的兴趣。这种性能是其大量包含在皮肤保健产品如防晒霜的制造中的原因,乳液,美容霜,皮肤软膏,化妆和其他人。特别是,它们合适的带隙能量特性允许它们用作光催化半导体。他们提供优异的紫外线吸收,通常被称为紫外线过滤器,并且负责其在世界范围内广泛用于防晒制剂中,在消费者施用后没有不期望的白色残留物。此外,基于无机纳米颗粒的化妆品具有与配方开发相关的几个附加特性,例如与其他纳米材料相比更便宜,具有更大的稳定性,并确保减少刺激,瘙痒,和皮肤过敏倾向。这篇综述将详细讨论用于皮肤药物和化妆品产品的主要无机纳米粒子,如二氧化钛,氧化锌,二氧化硅,银,黄金,铜,和铝纳米颗粒,纳米晶体,和量子点,报告它们的物理化学特征,还有它们的其他固有特性,这些特性有助于它们在这种类型的制剂中的使用。关于无机纳米粒子的安全问题,基于毒性研究,对人类和环境来说,以及与它们在皮肤药物和化妆品中的使用相关的监管事务,将被解决。
    The use of nanotechnology strategies is a current hot topic, and research in this field has been growing significantly in the cosmetics industry. Inorganic nanoparticles stand out in this context for their distinctive physicochemical properties, leading in particular to an increased refractive index and absorption capacity giving them a broad potential for cutaneous applications and making them of special interest in research for dermopharmaceutical and cosmetic purposes. This performance is responsible for its heavy inclusion in the manufacture of skin health products such as sunscreens, lotions, beauty creams, skin ointments, makeup, and others. In particular, their suitable bandgap energy characteristics allow them to be used as photocatalytic semiconductors. They provide excellent UV absorption, commonly known as UV filters, and are responsible for their wide worldwide use in sunscreen formulations without the undesirable white residue after consumer application. In addition, cosmetics based on inorganic nanoparticles have several additional characteristics relevant to formulation development, such as being less expensive compared to other nanomaterials, having greater stability, and ensuring less irritation, itching, and propensity for skin allergies. This review will address in detail the main inorganic nanoparticles used in dermopharmaceutical and cosmetic products, such as titanium dioxide, zinc oxide, silicon dioxide, silver, gold, copper, and aluminum nanoparticles, nanocrystals, and quantum dots, reporting their physicochemical characteristics, but also their additional intrinsic properties that contribute to their use in this type of formulations. Safety issues regarding inorganic nanoparticles, based on toxicity studies, both to humans and the environment, as well as regulatory affairs associated with their use in dermopharmaceuticals and cosmetics, will be addressed.
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  • 文章类型: Journal Article
    肺癌是死亡率最高的癌症类型之一,现在迫切需要探索一种更有效的治疗方式,以提高治疗效果,同时减轻副作用。设计多功能纳米颗粒可用于克服药物和常规药物递送系统的局限性。纳米技术已经被广泛研究,通过不同的需求,可以选择合适的纳米载体来负载抗癌药物,以提高治疗效果。可以预见,随着纳米技术的快速发展,越来越多的肺癌患者将受益于纳米技术。本文综述了多种多功能纳米粒子在肺癌治疗中的优势,为肺癌的治疗提供新的思路。
    这篇综述重点总结了用于靶向肺癌治疗的各种纳米颗粒及其优缺点,使用载有抗癌药物的纳米粒子,送到肺癌部位,提高药物的半衰期,提高抗癌药物的疗效,减少副作用。
    在体内循环中具有优越的药代动力学特性的纳米颗粒的递送模式增强了药物的半衰期,并提供组织靶向的选择性和克服生物屏障的能力,在肿瘤学领域带来一场革命。
    UNASSIGNED: Lung cancer is one of the cancer types with the highest mortality rate, exploring a more effective treatment modality that improves therapeutic efficacy while mitigating side effects is now an urgent requirement. Designing multifunctional nanoparticles can be used to overcome the limitations of drugs and conventional drug delivery systems. Nanotechnology has been widely researched, and through different needs, suitable nanocarriers can be selected to load anti-cancer drugs to improve the therapeutic effect. It is foreseeable that with the rapid development of nanotechnology, more and more lung cancer patients will benefit from nanotechnology. This paper reviews the merits of various multifunctional nanoparticles in the treatment of lung cancer to provide novel ideas for lung cancer treatment.
    UNASSIGNED: This review focuses on summarizing various nanoparticles for targeted lung cancer therapy and their advantages and disadvantages, using nanoparticles loaded with anti-cancer drugs, delivered to lung cancer sites, enhancing drug half-life, improving anti-cancer drug efficacy and reducing side effects.
    UNASSIGNED: The delivery mode of nanoparticles with superior pharmacokinetic properties in the in vivo circulation enhances the half-life of the drug, and provides tissue-targeted selectivity and the ability to overcome biological barriers, bringing a revolution in the field of oncology.
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  • 文章类型: Journal Article
    由功能性无机纳米粒子组装而成的多面体胶体团簇在科学研究和应用中都引起了极大的兴趣。然而,胶体纳米粒子自发组装成具有规则形状和可调结构的多面体簇仍然是一个巨大的挑战。这里,通过精确调整纳米粒子与油/水界面之间的界面相互作用,我们成功地构建了Mackay二十面体和规则的四面体胶体簇,这些簇由接枝了聚苯乙烯(PS)和聚(2-乙烯基吡啶)(P2VP)均聚物的混合物的金纳米粒子组装而成。通过增加亲水性P2VP配体在金纳米粒子表面的比例,Mackay二十面体团簇可以转变为规则的四面体团簇,以最大化多面体组件的表面积。此外,我们揭示了这些规则多面体胶体团簇的形成机理。多面体胶体团簇的形成不仅取决于熵,而且还取决于界面自由能。这一发现证明了将纳米颗粒组织成多面体胶体簇的有效方法,在各个领域具有潜在的应用。
    Polyhedral colloidal clusters assembled from functional inorganic nanoparticles have attracted great interest in both scientific research and applications. However, the spontaneous assembly of colloidal nanoparticles into polyhedral clusters with regular shape and tunable structures remains a grand challenges. Here, we successfully construct Mackay icosahedral and regular tetrahedral colloidal clusters assembled from gold nanoparticles grafted with a mixture of polystyrene (PS) and poly(2-vinylpyridine) (P2VP) homopolymers by precisely tuning the interfacial interaction between the nanoparticles and the oil/water interface. By increasing the proportion of hydrophilic P2VP ligands on the surface of gold nanoparticles, the Mackay icosahedral clusters can transform into regular tetrahedral clusters in order to maximize the surface area of the polyhedral assembly. Furthermore, we reveal the formation mechanism of these regular polyhedral colloidal clusters. The formation of polyhedral colloidal clusters is not only dependent on the entropy but also determined by the interfacial free energy. This finding demonstrates an effective approach to organize nanoparticles into polyhedral colloidal clusters with potential applications in various fields.
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  • 由于称为淀粉样蛋白的不溶性纤维状团块的沉积,许多退行性疾病已经开始发展。这种沉积主要限制正常的细胞功能和信号传导。这种体内淀粉样蛋白的积累导致体内各种疾病,包括2型糖尿病,几种神经退行性疾病(如阿尔茨海默病和海绵状脑病),和老年痴呆症。在过去的几十年中,纳米颗粒作为淀粉样变性的潜在治疗方法已经证明了日益增长的兴趣。无机纳米颗粒就是其中之一,并且作为潜在的抗淀粉样蛋白药物也被大量研究。无机纳米粒子由于其尺寸减小而成为很好的研究候选者,独特的物理特征,以及穿越血脑屏障的能力。在当前的审查中,我们将关注不同类型的无机纳米粒子对淀粉样蛋白生成的影响,并试图了解其潜在的作用机制。
    Many degenerative disorders have started to develop as a result of the deposition of insoluble protein fibrillar clumps known as amyloid. This deposition mostly limits normal cellular function and signaling. This build-up of amyloid in vivo results in a variety of illnesses in the body, including type 2 diabetes, several neurodegenerative diseases (such as Alzheimer\'s disease and spongiform encephalopathy), and Alzheimer\'s disease. Growing interest has been demonstrated in nanoparticles as a potential treatments for amyloidosis throughout the past few decades. Inorganic nanoparticles are one of them and have also been in substantial research as a potential anti-amyloid drug. Inorganic nanoparticles have emerged as a good study candidates because of their nano size, distinctive physical characteristics, and capacity to traverse the blood-brain barrier. In the current review, we have focused on the effects of different types of inorganic nanoparticles on amyloidogenesis and attempted to understand their underlying mechanism of action.
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  • 文章类型: Journal Article
    为了解决电池性能在100°C或更高的高温条件下迅速劣化的挑战,将通过溶胶-凝胶法合成的具有各种Zr:Ti比的ZrO2-TiO2(ZT)浸渍在Nafion膜中。通过材料表征,确定了具有Zr-O-Ti键的独特ZT晶相峰,并且可以鉴定与该键和固有官能团区域相关的条带范围。将这些制备的粉末与10%(w/w)Nafion-水分散体混合以制备复合Nafion膜(NZT)。在颗粒均匀分布的NZT中,随着TiO2含量的增加,吸水率增加,离子交换容量降低。这些结果优于常规Nafion112的结果。在反应面积为9cm2的单个电池中使用极化曲线测量所有膜的电化学性质,在加湿的H2/空气中的操作条件为120°C,50%相对湿度(RH)和2个大气压。具有Zr:Ti比为1:3的纳米颗粒(NZT13)的复合膜电池表现出最佳的电化学特性。这些结果可以解释为改进的物理化学性质的NZT13,如优化的水含量和离子交换能力,水和纳米填料之间的强分子间力(δ),填充物(τ)增加了弯曲度。这项研究的结果表明,NZT膜可以在高温和低湿度条件下替代常规膜。为了考察复合膜中无机纳米材料含量的影响,还制备了无机纳米填料含量为20%或30%(w/w)的复合膜(NZT-20、NZT-30)。在NZT13、NZT-20和NZT-30的顺序下性能高。这表明不仅操作条件而且颗粒含量都会显著影响性能。
    In order to solve the challenge that battery performance rapidly deteriorates at a high temperature condition of 100 °C or higher, ZrO2-TiO2 (ZT) with various Zr:Ti ratios synthesized by a sol-gel method were impregnated in a Nafion membrane. Through material characterization, a unique ZT crystal phase peak with a Zr-O-Ti bond was identified, and the band range associated with this bond and intrinsic functional group region could be identified. These prepared powders were blended with 10% (w/w) Nafion-water dispersion to prepare composite Nafion membranes (NZTs). The water uptake increased and the ion exchange capacity decreased as the TiO2 content increased in the NZTs in which particles were uniformly distributed. These results were superior to those of the conventional Nafion 112. The electrochemical properties of all membranes was measured using a polarization curve in a single cell with a reaction area of 9 cm2, and the operating conditions in humidified H2/air was 120 °C under 50% relative humidity (RH) and 2 atm. The composite membrane cell with nanoparticles of a Zr:Ti ratio of 1:3 (NZT13) exhibited the best electrochemical characteristics. These results can be explained by the improved physicochemical properties of NZT13, such as optimized water content and ion exchange capacity, strong intermolecular forces acting between water and nanofillers (δ), and increased tortuosity by the fillers (τ). The results of this study show that the NZT membrane can replace a conventional membrane under high-temperature and low-humidity conditions. To examine the effect of the content of the inorganic nanomaterials in the composite membrane, a composite membrane (NZT-20, NZT-30) having an inorganic nano-filler content of 20 or 30% (w/w) was also prepared. The performance was high in the order of NZT13, NZT-20, and NZT-30. This shows that not only the operating conditions but also the particle content can significantly affect the performance.
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  • 文章类型: Journal Article
    石墨烯基复合气凝胶(GCA)是指由石墨烯或其衍生物形成的固体多孔物质,氧化石墨烯(GO)和还原氧化石墨烯(rGO),无机材料和聚合物。因为GCA具有超高的吸附性能,分离,电性能,和灵敏度,它在超强吸附和分离材料中具有巨大的应用潜力,长寿命快速充电电池,和柔性传感材料。GCA已成为研究热点,近年来出现了许多研究论文和成果。因此,制造,结构,性能,本文对GCA的应用前景进行了综述和讨论。同时,介绍了GCA存在的问题和发展趋势,以便更多的人了解GCA并对其进行研究。
    Graphene-based composite aerogel (GCA) refers to a solid porous substance formed by graphene or its derivatives, graphene oxide (GO) and reduced graphene oxide (rGO), with inorganic materials and polymers. Because GCA has super-high adsorption, separation, electrical properties, and sensitivity, it has great potential for application in super-strong adsorption and separation materials, long-life fast-charging batteries, and flexible sensing materials. GCA has become a research hotspot, and many research papers and achievements have emerged in recent years. Therefore, the fabrication, structure, performance, and application prospects of GCA are summarized and discussed in this review. Meanwhile, the existing problems and development trends of GCA are also introduced so that more will know about it and be interested in researching it.
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  • 文章类型: Journal Article
    Hearing loss is a common disease due to sensory loss caused by the diseases in the inner ear. The development of delivery systems for inner ear disease therapy is important to achieve high efficiency and reduce side effects. Currently, traditional drug delivery systems exhibit the potential to be used for inner ear disease therapy, but there are still some drawbacks. As nanotechnology is developing these years, one of the solutions is to develop nanoparticle-based delivery systems for inner ear disease therapy. Various nanoparticles, such as soft material and inorganic-based nanoparticles, have been designed, tested, and showed controlled delivery of drugs, improved targeting property to specific cells, and reduced systemic side effects. In this review, we summarized recent progress in nanocarriers for inner ear disease therapy. This review provides useful information on developing promising nanocarriers for the efficient treatment of inner ear diseases and for further clinical applications for inner ear disease therapy.
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