共查询到20条相似文献,搜索用时 15 毫秒
1.
Mesoporous Nanoparticles: Facile Synthesis of Yolk–Shell‐Structured Triple‐Hybridized Periodic Mesoporous Organosilica Nanoparticles for Biomedicine (Small 26/2016)
下载免费PDF全文
![点击此处可从《Small (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Zhaogang Teng Junjie Zhang Wei Li Yuanyi Zheng Xiaodan Su Yuxia Tang Meng Dang Ying Tian Lihui Yuwen Lixing Weng Guangming Lu Lianhui Wang 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(26):3473-3473
2.
Facile Synthesis of Yolk–Shell Structured Inorganic–Organic Hybrid Spheres with Ordered Radial Mesochannels
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Zhaogang Teng Shouju Wang Xiaodan Su Guotao Chen Ying Liu Zhimin Luo Wei Luo Yuxia Tang Huangxian Ju Dongyuan Zhao Guangming Lu 《Advanced materials (Deerfield Beach, Fla.)》2014,26(22):3741-3747
3.
One‐Pot Construction of Multipodal Hybrid Periodic Mesoporous Organosilica Nanoparticles with Crystal‐Like Architectures
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Jonas Croissant Xavier Cattoën Michel Wong Chi Man Philippe Dieudonné Clarence Charnay Laurence Raehm Jean‐Olivier Durand 《Advanced materials (Deerfield Beach, Fla.)》2015,27(1):145-149
4.
Lei Yu Panpan Pan Yu Zhang Yi Zhang Li Wan Xiaowei Cheng Yonghui Deng 《Small (Weinheim an der Bergstrasse, Germany)》2019,15(14)
Using interfacial reaction systems for biphasic catalytic reactions is attracting more and more attention due to their simple reaction process and low environmental pollution. Yolk–shell structured materials have broad applications in biomedicine, catalysis, and environmental remediation owing to their open channels and large space for guest molecules. Conventional methods to obtain yolk–shell mesoporous materials rely on costly and complex hard‐template strategies. In this study, a mild and convenient nonsacrificial self‐template strategy is developed to construct yolk–shell magnetic periodic mesoporous organosilica (YS‐mPMO) particles by using the unique swelling–deswelling property of low‐crosslinking density resorcinol formaldehyde (RF). The obtained YS‐mPMO microspheres possess an amphiphilic outer shell, high surface area (393 m2 g?1), uniform mesopores (2.58 nm), a tunable middle hollow space (50–156 nm), and high superparamagnetism (34.4–37.1 emu g?1). By tuning the synthesis conditions, heterojunction structured yolk–shell Fe3O4@RF@void@PMO particles with different morphologies can be produced. Owing to the amphipathy of PMO framworks, the YS‐mPMO particles show great emulsion stabilization ability and recyclability under a magnetic field. YS‐mPMO microspheres with immobilized Au nanoparticles (≈3 nm) act as both solid emulsifier for dispersing styrene (St) in water and interface catalysts for selective conversion of St into styrene oxide with a high selectivity of 86%, and yields of over 97%. 相似文献
5.
Li‐Sen Lin Jibin Song Huang‐Hao Yang Xiaoyuan Chen 《Advanced materials (Deerfield Beach, Fla.)》2018,30(6)
Yolk–shell nanostructures (YSNs) composed of a core within a hollow cavity surrounded by a porous outer shell have received tremendous research interest owing to their unique structural features, fascinating physicochemical properties, and widespread potential applications. Here, a comprehensive overview of the design, synthesis, and biomedical applications of YSNs is presented. The synthetic strategies toward YSNs are divided into four categories, including hard‐templating, soft‐templating, self‐templating, and multimethod combination synthesis. For the hard‐ or soft‐templating strategies, different types of rigid or vesicle templates are used for making YSNs. For the self‐templating strategy, a number of unconventional synthetic methods without additional templates are introduced. For the multimethod combination strategy, various methods are applied together to produce YSNs that cannot be obtained directly by only a single method. The biomedical applications of YSNs including biosensing, bioimaging, drug/gene delivery, and cancer therapy are discussed in detail. Moreover, the potential superiority of YSNs for these applications is also highlighted. Finally, some perspectives on the future research and development of YSNs are provided. 相似文献
6.
Hollow‐Structured Mesoporous Materials: Chemical Synthesis,Functionalization and Applications
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Hollow‐structured mesoporous materials (HMMs), as a kind of mesoporous material with unique morphology, have been of great interest in the past decade because of the subtle combination of the hollow architecture with the mesoporous nanostructure. Benefitting from the merits of low density, large void space, large specific surface area, and, especially, the good biocompatibility, HMMs present promising application prospects in various fields, such as adsorption and storage, confined catalysis when catalytically active species are incorporated in the core and/or shell, controlled drug release, targeted drug delivery, and simultaneous diagnosis and therapy of cancers when the surface and/or core of the HMMs are functionalized with functional ligands and/or nanoparticles, and so on. In this review, recent progress in the design, synthesis, functionalization, and applications of hollow mesoporous materials are discussed. Two main synthetic strategies, soft‐templating and hard‐templating routes, are broadly sorted and described in detail. Progress in the main application aspects of HMMs, such as adsorption and storage, catalysis, and biomedicine, are also discussed in detail in this article, in terms of the unique features of the combined large void space in the core and the mesoporous network in the shell. Functionalization of the core and pore/outer surfaces with functional organic groups and/or nanoparticles, and their performance, are summarized in this article. Finally, an outlook of their prospects and challenges in terms of their controlled synthesis and scaled application is presented. 相似文献
7.
8.
Hak‐Lae Lee Haoran Wei Kiyoon Kim Hyun‐Seok Choe Hyun Park Taekyung Yu Changha Lee Jae‐Hong Kim Jae‐Hyuk Kim 《Small (Weinheim an der Bergstrasse, Germany)》2020,16(35)
Here, a novel, versatile synthetic strategy to fabricate a yolk–shell structured material that can encapsulate virtually any functional noble metal or metal oxide nanocatalysts of any morphology in a free suspension fashion is reported. This strategy also enables encapsulation of more than one type of nanoparticle inside a single shell, including paramagnetic iron oxide used for magnetic separation. The mesoporous organosilica shell provides efficient mass transfer of small target molecules, while serving as a size exclusion barrier for larger interfering molecules. Major structural and functional advantages of this material design are demonstrated by performing three proof‐of‐concept applications. First, effective encapsulation of plasmonic gold nanospheres for localized photothermal heating and heat‐driven reaction inside the shell is shown. Second, hydrogenation catalysis is demonstrated under spatial confinement driven by palladium nanocubes. Finally, the surface‐enhanced Raman spectroscopic detection of model pollutant by gold nanorods is presented for highly sensitive environmental sensing with size exclusion. 相似文献
9.
10.
Necklace‐Like Structures Composed of Fe3N@C Yolk–Shell Particles as an Advanced Anode for Sodium‐Ion Batteries
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Zhen Li Yongjin Fang Jintao Zhang Xiong Wen Lou 《Advanced materials (Deerfield Beach, Fla.)》2018,30(30)
It is of great importance to develop cost‐effective electrode materials for large‐scale use of Na‐ion batteries. Here, a binder‐free electrode based on necklace‐like structures composed of Fe3N@C yolk–shell particles as an advanced anode for Na‐ion batteries is reported. In this electrode, every Fe3N@C unit has a novel yolk–shell structure, which can accommodate the volumetric changes of Fe3N during the (de)sodiation processes for superior structural integrity. Moreover, all reaction units are threaded along the carbon fibers, guaranteeing excellent kinetics for the electrochemical reactions. As a result, when evaluated as an anode material for Na‐ion batteries, the Fe3N@C nano‐necklace electrode delivers a prolonged cycle life over 300 cycles, and achieves a high C‐rate capacity of 248 mAh g?1 at 2 A g?1. 相似文献
11.
Yu Chen Xiaobin Li Meng Wang Lucheng Peng Zhongzheng Yu Xiao Peng Jun Song Junle Qu 《Small (Weinheim an der Bergstrasse, Germany)》2020,16(7)
Mesoporous nanoparticles as a versatile platform for cancer theranostics have been widely used, but their cellular delivery efficiency is still far from satisfactory. Although deformability is emerging as an important parameter influencing cellular uptake enhancement, the facile synthesis of deformable mesoporous nanocomposite with adjustable mechanical property is challenging but meaningful for a deeper understanding of cellular uptake mechanisms and significantly improving cancer therapy. In this work, yolk–shell structured eccentric mesoporous organosilica (YEMO) nanocomposites with adjustable mechanical property are successfully prepared by an organosilane‐assisted anisotropic self‐assembly approach. The feasibility to precisely control the mechanical property of the YEMO by manipulating the structural parameters, the crosslinking degree of mesoporous framework, and the rotation rate of the reaction is demonstrated. The study of the fabrication mechanism and mechanical properties of YEMO are discussed in detail. The Young's modulus (EY) of YEMO can be adjusted from 2.4 to 65 MPa. Thereby, the continuous control of the cellular uptake from ≈15% to ≈80% under the same incubation time is achieved. To further prove the higher efficiency drug delivery of YEMO with soft characteristics, the higher toxicity of the “soft” YEMO loaded with the anticancer drug doxorubicin compared to the “stiff” one is demonstrated. 相似文献
12.
Jinkai Wang Lei Zhu Fang Li Tianhao Yao Ting Liu Yonghong Cheng Zongyou Yin Hongkang Wang 《Small (Weinheim an der Bergstrasse, Germany)》2020,16(33)
Sodium‐ion batteries (SIBs) have been recognized as the promising alternatives to lithium‐ion batteries for large‐scale applications owing to their abundant sodium resource. Currently, one significant challenge for SIBs is to explore feasible anodes with high specific capacity and reversible pulverization‐free Na+ insertion/extraction. Herein, a facile co‐engineering on polymorph phases and cavity structures is developed based on CoMo‐glycerate by scalable solvothermal sulfidation. The optimized strategy enables the construction of CoMoOxSy with synergized partially sulfidized amorphous phase and yolk–shell confined cavity. When developed as anodes for SIBs, such CoMoOxSy electrodes deliver a high reversible capacity of 479.4 mA h g?1 at 200 mA g?1 after 100 cycles and a high rate capacity of 435.2 mA h g?1 even at 2000 mA g?1, demonstrating superior capacity and rate capability. These are attributed to the unique dual merits of the anodes, that is, the elastic bountiful reaction pathways favored by the sulfidation‐induced amorphous phase and the sodiation/desodiation accommodatable space benefits from the yolk–shell cavity. Such yolk–shell nano‐battery materials are merited with co‐tunable phases and structures, facile scalable fabrication, and excellent capacity and rate capability in sodium storage. This provides an opportunity to develop advanced practical electrochemical sodium storage in the future. 相似文献
13.
Biphasic Synthesis of Large‐Pore and Well‐Dispersed Benzene Bridged Mesoporous Organosilica Nanoparticles for Intracellular Protein Delivery
下载免费PDF全文
![点击此处可从《Small (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Yannan Yang Yuting Niu Jun Zhang Anand Kumar Meka Hongwei Zhang Chun Xu Chun Xiang Cynthia Lin Meihua Yu Chengzhong Yu 《Small (Weinheim an der Bergstrasse, Germany)》2015,11(23):2743-2749
14.
Biodegradable Ethylene‐Bis(Propyl)Disulfide‐Based Periodic Mesoporous Organosilica Nanorods and Nanospheres for Efficient In‐Vitro Drug Delivery
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Jonas Croissant Xavier Cattoën Michel Wong Chi Man Audrey Gallud Laurence Raehm Philippe Trens Marie Maynadier Jean‐Olivier Durand 《Advanced materials (Deerfield Beach, Fla.)》2014,26(35):6174-6180
15.
16.
Synthesis of Uniquely Structured Yolk–Shell Metal Oxide Microspheres Filled with Nitrogen‐Doped Graphitic Carbon with Excellent Li–Ion Storage Performance
下载免费PDF全文
![点击此处可从《Small (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Novel structured composite microspheres of metal oxide and nitrogen‐doped graphitic carbon (NGC) have been developed as efficient anode materials for lithium‐ion batteries. A new strategy is first applied to a one‐pot preparation of composite (FeOx‐NGC/Y) microspheres via spray pyrolysis. The FeOx‐NGC/Y composite microspheres have a yolk–shell structure based on the iron oxide material. The void space of the yolk–shell microsphere is filled with NGC. Dicyandiamide additive plays a key role in the formation of the FeOx‐NGC/Y composite microspheres by inducing Ostwald ripening to form a yolk–shell structure based on the iron oxide material. The FeOx‐NGC/Y composite microspheres with the mixed crystal structure of rock salt FeO and spinel Fe3O4 phases show highly superior lithium‐ion storage performances compared to the dense‐structured FeOx microspheres with and without carbon material. The discharge capacities of the FeOx‐NGC/Y microspheres for the 1st and 1000th cycle at 1 A g?1 are 1423 and 1071 mAh g?1, respectively. The microspheres have a reversible discharge capacity of 598 mAh g?1 at an extremely high current density of 10 A g?1. Furthermore, the strategy described in this study is generally applied to multicomponent metal oxide–carbon composite microspheres with yolk–shell structures based on metal oxide materials. 相似文献
17.
Design and Synthesis of Spherical Multicomponent Aggregates Composed of Core–Shell,Yolk–Shell,and Hollow Nanospheres and Their Lithium‐Ion Storage Performances
下载免费PDF全文
![点击此处可从《Small (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Micrometer‐sized spherical aggregates of Sn and Co components containing core–shell, yolk–shell, hollow nanospheres are synthesized by applying nanoscale Kirkendall diffusion in the large‐scale spray drying process. The Sn2Co3–Co3SnC0.7–C composite microspheres uniformly dispersed with Sn2Co3–Co3SnC0.7 mixed nanocrystals are formed by the first‐step reduction of spray‐dried precursor powders at 900 °C. The second‐step oxidation process transforms the Sn2Co3–Co3SnC0.7–C composite into the porous microsphere composed of Sn–Sn2Co3@CoSnO3–Co3O4 core–shell, Sn–Sn2Co3@CoSnO3–Co3O4 yolk–shell, and CoSnO3–Co3O4 hollow nanospheres at 300, 400, and 500 °C, respectively. The discharge capacity of the microspheres with Sn–Sn2Co3@CoSnO3–Co3O4 core–shell, Sn‐Sn2Co3@CoSnO3–Co3O4 yolk–shell, and CoSnO3–Co3O4 hollow nanospheres for the 200th cycle at a current density of 1 A g?1 is 1265, 987, and 569 mA h g?1, respectively. The ultrafine primary nanoparticles with a core–shell structure improve the structural stability of the porous‐structured microspheres during repeated lithium insertion and desertion processes. The porous Sn–Sn2Co3@CoSnO3–Co3O4 microspheres with core–shell primary nanoparticles show excellent cycling and rate performances as anode materials for lithium‐ion batteries. 相似文献
18.
Chemistry of Mesoporous Organosilica in Nanotechnology: Molecularly Organic–Inorganic Hybridization into Frameworks
下载免费PDF全文
![点击此处可从《Advanced materials (Deerfield Beach, Fla.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Organic–inorganic hybrid materials aiming to combine the individual advantages of organic and inorganic components while overcoming their intrinsic drawbacks have shown great potential for future applications in broad fields. In particular, the integration of functional organic fragments into the framework of mesoporous silica to fabricate mesoporous organosilica materials has attracted great attention in the scientific community for decades. The development of such mesoporous organosilica materials has shifted from bulk materials to nanosized mesoporous organosilica nanoparticles (designated as MONs, in comparison with traditional mesoporous silica nanoparticles (MSNs)) and corresponding applications in nanoscience and nanotechnology. In this comprehensive review, the state‐of‐art progress of this important hybrid nanomaterial family is summarized, focusing on the structure/composition–performance relationship of MONs of well‐defined morphology, nanostructure, and nanoparticulate dimension. The synthetic strategies and the corresponding mechanisms for the design and construction of MONs with varied morphologies, compositions, nanostructures, and functionalities are overviewed initially. Then, the following part specifically concentrates on their broad spectrum of applications in nanotechnology, mainly in nanomedicine, nanocatalysis, and nanofabrication. Finally, some critical issues, presenting challenges and the future development of MONs regarding the rational synthesis and applications in nanotechnology are summarized and discussed. It is highly expected that such a unique molecularly organic–inorganic nanohybrid family will find practical applications in nanotechnology, and promote the advances of this discipline regarding hybrid chemistry and materials. 相似文献
19.
Yolk–Shell MnO@ZnMn2O4/N–C Nanorods Derived from α‐MnO2/ZIF‐8 as Anode Materials for Lithium Ion Batteries
下载免费PDF全文
![点击此处可从《Small (Weinheim an der Bergstrasse, Germany)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Ming Zhong Donghui Yang Chenchao Xie Zhang Zhang Zhen Zhou Xian‐He Bu 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(40):5564-5571
Manganese oxides (MnOx) are promising anode materials for lithium ion batteries, but they generally exhibit mediocre performances due to intrinsic low ionic conductivity, high polarization, and poor stability. Herein, yolk–shell nanorods comprising of nitrogen‐doped carbon (N–C) coating on manganese monoxide (MnO) coupled with zinc manganate (ZnMn2O4) nanoparticles are manufactured via one‐step carbonization of α‐MnO2/ZIF‐8 precursors. When evaluated as anodes for lithium ion batteries, MnO@ZnMn2O4/N–C exhibits an reversible capacity of 803 mAh g?1 at 50 mA g?1 after 100 cycles, excellent cyclability with a capacity of 595 mAh g?1 at 1000 mAg?1 after 200 cycles, as well as better rate capability compared with those non‐N–C shelled manganese oxides (MnOx). The outstanding electrochemical performance is attributed to the unique yolk–shell nanorod structure, the coating effect of N–C and nanoscale size. 相似文献