1
|
Liu R, Yu Z, Zhang R, Xiong J, Qiao Y, Liu X, Lu X. Hollow Nanoreactors for Controlled Photocatalytic Behaviors: Fundamental Theory, Structure-Performance Relationship, and Catalytic Advantages. Small 2024; 20:e2308142. [PMID: 37984879 DOI: 10.1002/smll.202308142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/21/2023] [Indexed: 11/22/2023]
Abstract
Hollow nanoreactors (HoNRs) have regarded as an attractive catalytic material for photocatalysis due to their exceptional capabilities in enhancing light harvesting, facilitating charge separation and transfer, and optimizing surface reactions. Developing novel HoNRs offers new options to realize controllable catalytic behavior. However, the catalytic mechanism of photocatalysis occurring in HoNRs has not yet been fully revealed. Against this backdrop, this review elaborates on three aspects: 1) the fundamental theoretical insights of HoNRs-driven photocatalytic kinetics; 2) structure-performance relationship of HoNRs to photocatalysis; 3) catalytic advantages of HoNRs in photocatalytic applications. Specifically, the review focuses on the fundamental theories of HoNRs for photocatalysis and their structural advantages for strengthening light scattering, promoting charge separation and transfer, and facilitating surface reaction kinetics, and the relationship between key structural parameters of HoNRs and their photocatalytic performance is in-depth discussed. Also, future prospects and challenges are proposed. It is anticipated that this review paper will pave the way for forthcoming investigations in the realm of HoNRs for photocatalysis.
Collapse
Affiliation(s)
- Runyu Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Zhihao Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P. R. China
| | - Jian Xiong
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P. R. China
| | - Yina Qiao
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, P. R. China
| | - Xinzhong Liu
- School of Ecological Environment and Urban Construction, Fujian University of Technology, Fujian, 350108, P. R. China
| | - Xuebin Lu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
- School of Ecology and Environment, Tibet University, Lhasa, 850000, P. R. China
| |
Collapse
|
2
|
Alcorn FM, van der Veen RM, Jain PK. In Situ Electron Microscopy of Transformations of Copper Nanoparticles under Plasmonic Excitation. Nano Lett 2023. [PMID: 37399502 DOI: 10.1021/acs.nanolett.3c01474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Metal nanoparticles are attracting interest for their light-absorption properties, but such materials are known to dynamically evolve under the action of chemical and physical perturbations, resulting in changes in their structure and composition. Using a transmission electron microscope equipped for optical excitation of the specimen, the structural evolution of Cu-based nanoparticles under simultaneous electron beam irradiation and plasmonic excitation was investigated with high spatiotemporal resolution. These nanoparticles initially have a Cu core-Cu2O oxide shell structure, but over the course of imaging, they undergo hollowing via the nanoscale Kirkendall effect. We captured the nucleation of a void within the core, which then rapidly grows along specific crystallographic directions until the core is hollowed out. Hollowing is triggered by electron-beam irradiation; plasmonic excitation enhances the kinetics of the transformation likely by the effect of photothermal heating.
Collapse
Affiliation(s)
- Francis M Alcorn
- Department of Chemistry, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| | - Renske M van der Veen
- Department of Chemistry, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Helmholtz Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana─Champaign, Urbana, Illinois 61801, United States
| |
Collapse
|
3
|
Lv Y, Zhang W, Gu Q, Gao Z. Simultaneous Loading of Ni 2 P Cocatalysts on the Inner and Outer Surfaces of Mesopores P-Doped Carbon Nitride Hollow Spheres for Enhanced Photocatalytic Water-Splitting Activity. Chemistry 2023; 29:e202202678. [PMID: 36210336 DOI: 10.1002/chem.202202678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Indexed: 11/16/2022]
Abstract
Promoting charge separation, constructing active sites, and improving the utilization of metal atoms are very important for the design of efficient photocatalysts. A simultaneous loading of Ni2 P cocatalysts on the inner and outer surfaces of mesoporous P-doped carbon nitride hollow nanospheres (PCNHS) to construct a Ni2 P@PCNHS@Ni2 P photocatalyst is reported. Ni2 P cocatalysts loading provides enough active sites on both the inner and outer surfaces for proton reduction, and the formed heterojunctions simultaneously promote the migration and separation of the photogenerated charges on the inner and outer surfaces. The photocatalytic reaction proceeds simultaneously on the inner and outer surfaces of Ni2 P@PCNHS@Ni2 P, which leads to a significantly improved photocatalytic water splitting performance and enhanced atomic utilization. Notably, the hydrogen evolution rate of Ni2 P@PCNHS@Ni2 P is 2.4 times higher than that of Pt-loaded PCNHS. The findings guide the design of hollow nanostructured composites with high-boosting photocatalytic performance.
Collapse
Affiliation(s)
- Yujing Lv
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620, West Chang'an Avenue Chang'an District, Xi'an, 710119, P.R. China
| | - Wei Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620, West Chang'an Avenue Chang'an District, Xi'an, 710119, P.R. China
| | - Quan Gu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620, West Chang'an Avenue Chang'an District, Xi'an, 710119, P.R. China
| | - Ziwei Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry and Chemical Engineering, Shaanxi Normal University, No. 620, West Chang'an Avenue Chang'an District, Xi'an, 710119, P.R. China
| |
Collapse
|
4
|
Yu Z, Ji N, Xiong J, Han Y, Li X, Zhang R, Qiao Y, Zhang M, Lu X. Ultrafine Ruthenium Clusters Shell-Embedded Hollow Carbon Spheres as Nanoreactors for Channel Microenvironment-Modulated Furfural Tandem Hydrogenation. Small 2022; 18:e2201361. [PMID: 35760757 DOI: 10.1002/smll.202201361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Rationally modulating the catalytic microenvironment is important for targeted induction of specific molecular behaviors to fulfill complicated catalytic purposes. Herein, a metal pre-chelating assisted assembly strategy is developed to facilely synthesize the hollow carbon spheres with ultrafine ruthenium clusters embedded in pore channels of the carbon shell (Ru@Shell-HCSs), which can be employed as nanoreactors with preferred electronic and geometric catalytic microenvironments for the efficient tandem hydrogenation of biomass-derived furfural toward 2-methylfuran. The channel-embedding structure is proved to confer the ultrafine ruthenium clusters with an electron-deficient property via a reinforced interfacial charge transfer mechanism, which prompts the hydrogenolysis of intermediate furfuryl alcohol during the tandem reaction, thus resulting in an enhanced 2-methylfuran generation. Meanwhile, lengthening the shell pore channel can offer reactant molecules with a prolonged diffusion path, and correspondingly a longer retention time in the channel, thereafter delivering an accelerated tandem hydrogenation progression. This paper aims to present a classic case that emphasizes the critical role of precisely controlling the catalytic microenvironment of the metal-loaded hollow nanoreactors in coping with the arduous challenges from multifunctional catalyst-driven complex tandem reactions.
Collapse
Affiliation(s)
- Zhihao Yu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Na Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Jian Xiong
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| | - You Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-Sen University, Guangdong, 510275, P. R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P. R. China
| | - Yina Qiao
- School of Environment and Safety Engineering, North University of China, Taiyuan, 030051, P. R. China
| | - Ming Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
| | - Xuebin Lu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300350, P. R. China
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| |
Collapse
|
5
|
Ye H, Nowak C, Liu Y, Li Y, Zhang T, Bleris L, Qin Z. Plasmonic LAMP: Improving the Detection Specificity and Sensitivity for SARS-CoV-2 by Plasmonic Sensing of Isothermally Amplified Nucleic Acids. Small 2022; 18:e2107832. [PMID: 35129304 PMCID: PMC9052780 DOI: 10.1002/smll.202107832] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/19/2022] [Indexed: 05/16/2023]
Abstract
The ability to detect pathogens specifically and sensitively is critical to combat infectious diseases outbreaks and pandemics. Colorimetric assays involving loop-mediated isothermal amplification (LAMP) provide simple readouts yet suffer from the intrinsic non-template amplification. Herein, a highly specific and sensitive assay relying on plasmonic sensing of LAMP amplicons via DNA hybridization, termed as plasmonic LAMP, is developed for the severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2) RNA detection. This work has two important advances. First, gold and silver (Au-Ag) alloy nanoshells are developed as plasmonic sensors that have 4-times stronger extinction in the visible wavelengths and give a 20-times lower detection limit for oligonucleotides over Au counterparts. Second, the integrated method allows cutting the complex LAMP amplicons into short repeats that are amendable for hybridization with oligonucleotide-functionalized Au-Ag nanoshells. In the SARS-CoV-2 RNA detection, plasmonic LAMP takes ≈75 min assay time, achieves a detection limit of 10 copies per reaction, and eliminates the contamination from non-template amplification. It also shows better detection specificity and sensitivity over commercially available LAMP kits due to the additional sequence identification. This work opens a new route for LAMP amplicon detection and provides a method for virus testing at its early representation.
Collapse
Affiliation(s)
- Haihang Ye
- Department of Mechanical EngineeringThe University of Texas at DallasRichardsonTX75080USA
| | - Chance Nowak
- Center of Systems BiologyThe University of Texas at DallasRichardsonTX75080USA
- Department of Biological SciencesThe University of Texas at DallasRichardsonTX75080USA
| | - Yaning Liu
- Department of Mechanical EngineeringThe University of Texas at DallasRichardsonTX75080USA
| | - Yi Li
- Center of Systems BiologyThe University of Texas at DallasRichardsonTX75080USA
- Department of BioengineeringThe University of Texas at DallasRichardsonTX75080USA
| | - Tingting Zhang
- Department of Mechanical EngineeringThe University of Texas at DallasRichardsonTX75080USA
| | - Leonidas Bleris
- Center of Systems BiologyThe University of Texas at DallasRichardsonTX75080USA
- Department of Biological SciencesThe University of Texas at DallasRichardsonTX75080USA
- Department of BioengineeringThe University of Texas at DallasRichardsonTX75080USA
| | - Zhenpeng Qin
- Department of Mechanical EngineeringThe University of Texas at DallasRichardsonTX75080USA
- Department of BioengineeringThe University of Texas at DallasRichardsonTX75080USA
- Center for Advanced Pain StudiesThe University of Texas at DallasRichardsonTX75080USA
- Department of SurgeryUniversity of Texas Southwestern Medical CenterDallasTX75390USA
| |
Collapse
|
6
|
Yang M, Zhang CH, Li NW, Luan D, Yu L, Lou XW(D. Design and Synthesis of Hollow Nanostructures for Electrochemical Water Splitting. Adv Sci (Weinh) 2022; 9:e2105135. [PMID: 35043604 PMCID: PMC8948566 DOI: 10.1002/advs.202105135] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/08/2021] [Indexed: 06/01/2023]
Abstract
Electrocatalytic water splitting using renewable energy is widely considered as a clean and sustainable way to produce hydrogen as an ideal energy fuel for the future. Electrocatalysts are indispensable elements for large-scale water electrolysis, which can efficiently accelerate electrochemical reactions occurring at both ends. Benefitting from high specific surface area, well-defined void space, and tunable chemical compositions, hollow nanostructures can be applied as promising candidates of direct electrocatalysts or supports for loading internal or external electrocatalysts. Herein, some recent progress in the structural design of micro-/nanostructured hollow materials as advanced electrocatalysts for water splitting is summarized. First, the design principles and corresponding strategies toward highly effective hollow electrocatalysts for oxygen/hydrogen evolution reactions are highlighted. Afterward, an overview of current reports about hollow electrocatalysts with diverse architectural designs and functionalities is given, including direct hollow electrocatalysts with single-shelled, multi-shelled, or open features and heterostructured electrocatalysts based on hollow hosts. Finally, some future research directions of hollow electrocatalysts for water splitting are discussed based on personal perspectives.
Collapse
Affiliation(s)
- Min Yang
- State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Cai Hong Zhang
- State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Nian Wu Li
- State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Deyan Luan
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| | - Le Yu
- State Key Lab of Organic‐Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P. R. China
| | - Xiong Wen (David) Lou
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| |
Collapse
|
7
|
Ding J, Wang Y, Huang Z, Song W, Zhong C, Ding J, Hu W. Toward Theoretical Capacity and Superhigh Power Density for Potassium-Selenium Batteries via Facilitating Reversible Potassiation Kinetics. ACS Appl Mater Interfaces 2022; 14:6828-6840. [PMID: 35099173 DOI: 10.1021/acsami.1c22623] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Potassium-selenium (K-Se) batteries attract tremendous attention because of the two-electron transfer of the selenium cathode. Nonetheless, practical K-Se cells normally display selenium underutilization and unsatisfactory rate capability. Herein, we employ a synergistic spatial confinement and architecture engineering strategy to establish selenium cathodes for probing the effect of K+ diffusion kinetics on K-Se battery performance and improving the charge transfer efficiency at ultrahigh rates. By impregnating selenium into hollow and solid carbon spheres with similar diameters and porous structures, the obtained parallel Se/C composites possess nearly identical selenium loadings, molecular structures, and heterogeneous interfaces but enormously different paths for K+ diffusion. Remarkably, as the solid-state K+ diffusion distance is significantly reduced, the K-Se cell achieves 96% of 2e- transfer capacity (647.1 mA h g-1). Reversible capacities of 283.5 and 224.1 mA h g-1 are obtained at 7.5 and 15C, respectively, corresponding to an unprecedented high power density of 8777.8 W kg-1. Quantitative kinetic analysis demonstrated a twofold higher capacitive charge storage contribution and a 1 order of magnitude higher K+ diffusion coefficient due to the short K+ diffusion path. By combining the determination of potassiation products by ex situ characterization and density functional theory (DFT) calculations, it is identified that the kinetic factor is decisive for K-Se battery performances.
Collapse
Affiliation(s)
- Jingnan Ding
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Yidu Wang
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Zechuan Huang
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Wanqing Song
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Cheng Zhong
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Jia Ding
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
| | - Wenbin Hu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| |
Collapse
|
8
|
Kim Y, Lee YW, Lee S, Gong J, Lee HS, Han SW. One-Pot Synthesis of Ternary Alloy Hollow Nanostructures with Controlled Morphologies for Electrocatalysis. ACS Appl Mater Interfaces 2021; 13:45538-45546. [PMID: 34530610 DOI: 10.1021/acsami.1c13171] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The rational design and synthesis of multimetallic hollow nanostructures (HNSs) have been attracting great attention due to their structural and compositional advantages for application in electrocatalysis. Herein, the one-pot synthesis of Pd-Pt-Ag ternary alloy HNSs with controllable morphologies through a self-templating approach without any pre-synthesized templates is reported. Simultaneous reduction of multiple metal precursors by ascorbic acid in the presence of cetyltrimethylammonium chloride (CTAC) yielded initially metastable Pd-Ag nanocrystals, which can act as a self-template, and subsequent galvanic replacement and reduction led to the formation of final Pd-Pt-Ag HNSs. The size and hollowness (the ratio of inner cavity diameter to outer diameter) of the HNSs could be tuned through control over the concentration of CTAC. This can be attributed to the manipulated reduction kinetics of multiple metal precursors with the change in the CTAC concentration. The prepared Pd-Pt-Ag HNSs exhibited improved catalytic performance for ethanol electro-oxidation due to their large active surface areas and ternary alloy composition.
Collapse
Affiliation(s)
- Yonghyeon Kim
- Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 34141, Korea
| | - Young Wook Lee
- Department of Education Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 52828, Korea
| | - Seunghoon Lee
- Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 34141, Korea
- Department of Chemistry, Dong-A University, Busan 49315, Korea
| | - Jintaek Gong
- Center for Multiscale Chiral Architectures, Department of Chemistry, KAIST, Daejeon 34141, Korea
| | - Hee-Seung Lee
- Center for Multiscale Chiral Architectures, Department of Chemistry, KAIST, Daejeon 34141, Korea
| | - Sang Woo Han
- Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 34141, Korea
| |
Collapse
|
9
|
Rada E, Lima E, Ruiz F, Moreno S. Small hollow nanostructures as a new morphology to improve stability of LiMn 2O 4cathodes in Li-ion batteries. Nanotechnology 2021; 32:435403. [PMID: 34265759 DOI: 10.1088/1361-6528/ac14e7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
Spinel LiMn2O4is a promising cathode material for lithium-ion batteries. However, bulk LiMn2O4commonly suffers from capacity fading due to the dissolution of Mn into the electrolyte during cycling. Moreover, bulk LiMn2O4exhibits a low Li+diffusion coefficient that limits the volume available to Li+storage. Herein, we report the synthesis of small hollow porous LiMn2O4nanostructures with a mean size of 51 nm exhibiting exposed (111) planes, assembled by nanoparticles of about 6 nm in size. The morphological features of these nanostructures ensure a large contact area between the material and the electrolyte, shorten the pathways for Li+diffusion and provide effective accommodation of the volume change during cycling. Therefore, these hollow nanostructures exhibit improved discharge capacity retention (nearly 82% after 200 cycles) and a greater Li+diffusion coefficient (3.46 × 10-7cm s-1) compared with that of bulk LiMn2O4.
Collapse
Affiliation(s)
- Evilus Rada
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Enio Lima
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Fabricio Ruiz
- Gerencia de Investigación Aplicada, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| | - Sergio Moreno
- Instituto de Nanociencia y Nanotecnología, INN, CNEA-CONICET, Centro Atómico Bariloche, S. C. Bariloche, 8400, Argentina
| |
Collapse
|
10
|
Yu Z, Ji N, Xiong J, Li X, Zhang R, Zhang L, Lu X. Ruthenium-Nanoparticle-Loaded Hollow Carbon Spheres as Nanoreactors for Hydrogenation of Levulinic Acid: Explicitly Recognizing the Void-Confinement Effect. Angew Chem Int Ed Engl 2021; 60:20786-20794. [PMID: 34159675 DOI: 10.1002/anie.202107314] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 12/17/2022]
Abstract
As a typical class of man-made nanoreactors, metal-loaded hollow carbon nanostructures (MHC nanoreactors) exhibit competitive potentials in the heterogeneous catalysis due to their tailorable microenvironment effects, in which the void-confinement effect is one of the most fundamental functions in boosting the catalytic performance. Herein this paper, Ru-loaded hollow carbon spheres are employed as nanoreactors with a crucial biomass hydrogenation process, levulinic acid (LA) hydrogenation into γ-valerolactone, as the probe reaction to further recognize the forming mechanism of this pivotal effect. We demonstrated that the void-confinement effect of the selected MHC nanoreactors is essentially driven by an integrating action of electronic metal-support interaction, reactant enrichment and diffusion, which are mainly ascribed to peculiar properties of hollow nanoreactors both in electronic and structural aspects, respectively. This work offers a distinct case for interpreting the catalytic behaviour of MHC nanoreactors, which could potentially promise broader insights into the microenvironment engineering strategies of hollow nanostructures.
Collapse
Affiliation(s)
- Zhihao Yu
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Na Ji
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
| | - Jian Xiong
- School of Science, Tibet University, Lhasa, Tibet, 850000, P. R. China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P. R. China
| | - Lidong Zhang
- State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xuebin Lu
- School of Science, Tibet University, Lhasa, Tibet, 850000, P. R. China
| |
Collapse
|
11
|
Sun Y, Li C, Jiang S, Xia R, Wang X, Bao H, Gao M. Comparative study on supercapacitive and oxygen evolution reaction applications of hollow nanostructured cobalt sulfides. Nanotechnology 2021; 32:385401. [PMID: 34107464 DOI: 10.1088/1361-6528/ac09aa] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/09/2021] [Indexed: 06/12/2023]
Abstract
Due to the diversity of sulfur valence in cobalt-based sulfides, it is difficult to control the crystal phase and composition of the products during synthesis. Herein, a one-pot hydrothermal method is reported to self-assemble the cobalt sulfides (CoS2, Co9S8and Co3S4) with hollow nanostructures. The whole preparation process is simple and mild, avoiding high temperature calcination. The performances of the three kinds of cobalt sulfide in superior supercapacitors and electrocatalytic oxygen evolution performance applications follow the order of CoS2 > Co9S8 > Co3S4. Further analysis demonstrates that the performance difference in these cobalt sulfides may be attributed to three factors: the presence ofS22-,the coordination environment of Co and the presence of continuous network of Co-Co bonds. The distinctive electrochemical performance of CoS2and Co9S8may help us to better understand the excellent electrochemical activity of metal polysulfides and metal sulfides after doping or alloying. Therefore, this work may provide a reference in understanding and designing the electrode materials for highly efficient applications in the fields of energy storage and conversion.
Collapse
Affiliation(s)
- Yimeng Sun
- School of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technology, Wuhan Textile University, 430200 Wuhan, People's Republic of China
| | - Chen Li
- School of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technology, Wuhan Textile University, 430200 Wuhan, People's Republic of China
| | - Subin Jiang
- Key Laboratory for Magnetism and Magnetic Materials of MOE, School of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, People's Republic of China
| | - Rui Xia
- Key Laboratory for Magnetism and Magnetic Materials of MOE, School of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, People's Republic of China
| | - Xing Wang
- School of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technology, Wuhan Textile University, 430200 Wuhan, People's Republic of China
| | - Haifeng Bao
- School of Materials Science and Engineering, State Key Laboratory of New Textile Materials and Advanced Processing Technology, Wuhan Textile University, 430200 Wuhan, People's Republic of China
| | - Meizhen Gao
- Key Laboratory for Magnetism and Magnetic Materials of MOE, School of Physical Science and Technology, Lanzhou University, 730000 Lanzhou, People's Republic of China
| |
Collapse
|
12
|
Tan X, Wang R, Liu X, Wang W, Cao L, Dong B. Mn 3-x Fe x O 4 Hollow Nanostructures for High-Performance Asymmetric Supercapacitor Applications. Chemistry 2021; 27:9398-9405. [PMID: 33908095 DOI: 10.1002/chem.202100768] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Indexed: 11/10/2022]
Abstract
Design of hollow nanostructure and controllable phase of mixed metal oxides for improving performance in supercapacitor applications is highly desirable. Here we demonstrate the rational design and synthesis of Mn3-x Fex O4 hollow nanostructures for supercapacitor applications. Owing to high porosity and the specific surface area that provides more active sites for electrochemical reactions, the electrochemical performance of Mn3-x Fex O4 hollow nanostructure substantially enhanced comparing with pristine Mn3 O4 . Particularly, in 1.0 M KOH electrolyte, Mn0.16 Fe2.84 O4 with a typical diameter of 20 nm exhibits excellent specific capacitance of 2675, 2320, 1662, 987 F g-1 at current densities of 1, 2, 5, 10 A g-1 , respectively, which is significantly superior to those of other transition metal oxides. Besides, an asymmetric supercapacitor is assembled by using Mn0.16 Fe2.84 O4 and activated carbon as a positive and a negative electrode, respectively. Electrochemical results indicate a high energy density of 42 Wh kg-1 at a power density of 0.75 kW kg-1 , which makes this hollow nanostructure a highly promising electrode for achieving high-performance next-generation supercapacitors.
Collapse
Affiliation(s)
- Xueling Tan
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, Shandong, P. R. China
| | - Ruonan Wang
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, Shandong, P. R. China
| | - Xiaofei Liu
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, Shandong, P. R. China
| | - Wei Wang
- Aramco Research Center Boston, Aramco Services Company, 02139, Cambridge, MA, USA
| | - Lixin Cao
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, Shandong, P. R. China
| | - Bohua Dong
- School of Materials Science and Engineering, Ocean University of China, 266100, Qingdao, Shandong, P. R. China
| |
Collapse
|
13
|
Qin N, Pan A, Yuan J, Ke F, Wu X, Zhu J, Liu J, Zhu J. One-Step Construction of a Hollow Au@Bimetal-Organic Framework Core-Shell Catalytic Nanoreactor for Selective Alcohol Oxidation Reaction. ACS Appl Mater Interfaces 2021; 13:12463-12471. [PMID: 33657796 DOI: 10.1021/acsami.0c20445] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Hollow core-shell catalytic nanoreactors have received tremendous attention due to their high mass transfer in catalysis applications. Herein, we present a novel type of well-arranged, hollow core-shell nanoreactors featured with a bimetallic porous Zn/Ni-MOF-2 shell and a tiny Au nanoparticle core. The well-designed hollow Au@Zn/Ni-MOF-2 nanoreactors were constructed through the strategy of a facile one step from a rare crystal-structure transformation without any additional template. These nanoreactors exhibit outstanding multifunctional catalysis for a broad range of alcohol oxidation under the green oxidant environment. Moreover, such hollow nanoreactors show excellent recyclability toward the selective alcohol oxidation. These findings might provide a promising platform for a general construct of various metal-organic framework-based hollow core-shell nanostructures and further highly augmented catalytic applications.
Collapse
Affiliation(s)
- Nianqiao Qin
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - An Pan
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - Jun Yuan
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - Fei Ke
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - Xiaoyan Wu
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - Jing Zhu
- Department of Applied Chemistry and State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, P. R. China
| | - Jianqiang Liu
- Dongguan Key Laboratory of Drug Design and Formulation Technology, Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University, School of Pharmacy, Guangdong Medical University, Dongguan 523808, P. R. China
| | - Junfa Zhu
- National Synchrotron Radiation Laboratory and Department of Chemical Physics, University of Science and Technology of China, Hefei 230029, P. R. China
| |
Collapse
|
14
|
Fang Y, Zeng Y, Jin Q, Lu XF, Luan D, Zhang X, Lou XWD. Nitrogen-Doped Amorphous Zn-Carbon Multichannel Fibers for Stable Lithium Metal Anodes. Angew Chem Int Ed Engl 2021; 60:8515-8520. [PMID: 33481323 DOI: 10.1002/anie.202100471] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Indexed: 11/08/2022]
Abstract
The application of lithium metal anodes for practical batteries is still impeded by safety issues and low Coulombic efficiency caused mainly by the uncontrollable growth of lithium dendrites. Herein, two types of free-standing nitrogen-doped amorphous Zn-carbon multichannel fibers are synthesized as multifunctional hosts for lithium accommodation. The 3D macroporous structures endow effectively reduced local current density, and the lithiophilic nitrogen-doped carbon and functional Zn nanoparticles serve as preferred deposition sites with low nucleation barriers to guide uniform lithium deposition. As a result, the developed anodes exhibit remarkable electrochemical properties in terms of high Coulombic efficiency for more than 500 cycles at various current densities from 1 to 5 mA cm-2 , and symmetric cells show long-term cycling duration over 2000 h. Moreover, full cells based on the developed anode and a LiFePO4 cathode also demonstrate superior rate capability and stable cycle life.
Collapse
Affiliation(s)
- Yongjin Fang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Yinxiang Zeng
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Qi Jin
- School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Xue Feng Lu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Deyan Luan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Xitian Zhang
- School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, P. R. China
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| |
Collapse
|
15
|
Chen B, Zhang C, Wang W, Chu Z, Zha Z, He X, Zhou W, Liu T, Wang H, Qian H. Ultrastable AgBiS 2 Hollow Nanospheres with Cancer Cell-Specific Cytotoxicity for Multimodal Tumor Therapy. ACS Nano 2020; 14:14919-14928. [PMID: 33137257 DOI: 10.1021/acsnano.0c04370] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Specific cytotoxicity for catalytic nanomedicine triggered by the tumor microenvironment (TME) has attracted increasing interest. In this work, we prepared AgBiS2 hollow nanospheres with narrow bandgaps via rapid precipitation in a weakly polar solvent, which lowered the intrinsic energy gap for the active production of highly reactive hydroxyl radicals (•OH), especially in the TME. The as-prepared AgBiS2 hollow nanospheres exhibited enhanced optical absorption and high photothermal conversion efficiency (44.2%). In addition, the hollow structured AgBiS2 nanospheres were found to have a peroxidase-mimicking feature to induce cancer cell-specific cytotoxicity while exhibiting negligible cytotoxicity toward normal cells, which might be attributed to the efficient production of highly reactive •OH originating from the overexpression H2O2 in the TME caused by surface catalysis. In particular, the cancer cell-specific cytotoxicity of the nanospheres was greatly enhanced both in vitro and in vivo upon irradiation with a near-infrared (NIR) laser (808 nm). The above-mentioned features of the hollow structured AgBiS2 will make it a promising candidate for tumor therapy.
Collapse
Affiliation(s)
- Benjin Chen
- School of Biomedical Engineering, Anhui Medical University, Hefei 230032, P. R. China
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Chenyang Zhang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Wanni Wang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Zhaoyou Chu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Zhengbao Zha
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Xiaoyan He
- School of Biomedical Engineering, Anhui Medical University, Hefei 230032, P. R. China
- Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, P. R. China
| | - Wei Zhou
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P. R. China
| | - Tao Liu
- School of Biomedical Engineering, Anhui Medical University, Hefei 230032, P. R. China
- Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, P. R. China
| | - Hua Wang
- The First Affiliated Hospital of Anhui Medical University, Hefei 230022, P.R. China
| | - Haisheng Qian
- School of Biomedical Engineering, Anhui Medical University, Hefei 230032, P. R. China
- Research and Engineering Center of Biomedical Materials, Anhui Medical University, Hefei 230032, P. R. China
| |
Collapse
|
16
|
Gao Z, Ye H, Wang Q, Kim MJ, Tang D, Xi Z, Wei Z, Shao S, Xia X. Template Regeneration in Galvanic Replacement: A Route to Highly Diverse Hollow Nanostructures. ACS Nano 2020; 14:791-801. [PMID: 31917543 DOI: 10.1021/acsnano.9b07781] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The ability to produce a diverse spectrum of hollow nanostructures is central to the advances in many current and emerging areas of technology. Herein, we report a general method to craft hollow nanostructures with highly tunable physical and chemical parameters. The key strategy is to regenerate the nanoscale sacrificial templates in a galvanic replacement reaction through site-selective overgrowth. As examples, we demonstrate the syntheses of nanocages and nanotubes made of silver, gold, palladium, and/or platinum with well-controlled wall thicknesses and elemental distributions. Using the nanocages of silver and gold as models, we demonstrate they possess intriguing plasmonic properties and offer superior performance in biosensing applications. This study provides a powerful platform to customize hollow nanostructures with desired properties and therefore is expected to enable a variety of fundamental studies and technologically important applications.
Collapse
Affiliation(s)
- Zhuangqiang Gao
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Haihang Ye
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Qingxiao Wang
- Department of Materials Science and Engineering , University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Moon J Kim
- Department of Materials Science and Engineering , University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Dianyong Tang
- International Academy of Targeted Therapeutics and Innovation , Chongqing University of Arts and Sciences , Chongqing 402160 , People's Republic of China
| | - Zheng Xi
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Zhiyuan Wei
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Shikuan Shao
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Xiaohu Xia
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32816 , United States
| |
Collapse
|
17
|
Abstract
This current research progress on the fabrication of hollow nanostructures by using self-templating methods is reviewed. After a brief introduction to the unique properties and applications of hollow nanostructures and the three general fabrication routes, the discussions are focused on the five main self-templating strategies, including galvanic replacement, the Kirkendall effect, Ostwald ripening, dissolution-regrowth, and the surface-protected hollowing process. Some newly developed synthetic routes are selected and discussed in detail. In conclusion, a summary and the perspectives on the directions that might lead the future development of this exciting field are presented.
Collapse
Affiliation(s)
- Ji Feng
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Yadong Yin
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| |
Collapse
|
18
|
Nai J, Lou XWD. Hollow Structures Based on Prussian Blue and Its Analogs for Electrochemical Energy Storage and Conversion. Adv Mater 2019; 31:e1706825. [PMID: 30155969 DOI: 10.1002/adma.201706825] [Citation(s) in RCA: 219] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 03/03/2018] [Indexed: 05/27/2023]
Abstract
Due to their special structural characteristics, hollow structures grant fascinating physicochemical properties and widespread applications, especially in electrochemical energy storage and conversion. Recently, the research of Prussian blue (PB) and its analog (PBA) related nanomaterials has emerged and has drawn considerable attention because of their low cost, facile preparation, intrinsic open framework, and tunable composition. Here, the recent progress in the study of PB- and PBA-based hollow structures for electrochemical energy storage and conversion are summarized and discussed. First, some remarkable examples in the synthesis of hollow structures from PB- and PBA-based materials are illustrated in terms of the structural architectures, i.e., closed single-shelled hollow structures, open hollow structures, and complex hollow structures. Thereafter, their applications as potential electrode materials for lithium-/sodium-ion batteries, hybrid supercapacitors, and electrocatalysis are demonstrated. Finally, the current achievements in this field together with the limits and urgent challenges are summarized. Some perspectives on the potential solutions and possible future trends are also provided.
Collapse
Affiliation(s)
- Jianwei Nai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Xiong Wen David Lou
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| |
Collapse
|
19
|
Xiao M, Wang Z, Lyu M, Luo B, Wang S, Liu G, Cheng HM, Wang L. Hollow Nanostructures for Photocatalysis: Advantages and Challenges. Adv Mater 2019; 31:e1801369. [PMID: 30125390 DOI: 10.1002/adma.201801369] [Citation(s) in RCA: 215] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/05/2018] [Indexed: 05/25/2023]
Abstract
Photocatalysis for solar-driven reactions promises a bright future in addressing energy and environmental challenges. The performance of photocatalysis is highly dependent on the design of photocatalysts, which can be rationally tailored to achieve efficient light harvesting, promoted charge separation and transport, and accelerated surface reactions. Due to its unique feature, semiconductors with hollow structure offer many advantages in photocatalyst design including improved light scattering and harvesting, reduced distance for charge migration and directed charge separation, and abundant surface reactive sites of the shells. Herein, the relationship between hollow nanostructures and their photocatalytic performance are discussed. The advantages of hollow nanostructures are summarized as: 1) enhancement in the light harvesting through light scattering and slow photon effects; 2) suppression of charge recombination by reducing charge transfer distance and directing separation of charge carriers; and 3) acceleration of the surface reactions by increasing accessible surface areas for separating the redox reactions spatially. Toward the end of the review, some insights into the key challenges and perspectives of hollow structured photocatalysts are also discussed, with a good hope to shed light on further promoting the rapid progress of this dynamic research field.
Collapse
Affiliation(s)
- Mu Xiao
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Zhiliang Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Miaoqiang Lyu
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Bin Luo
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Gang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang, 110016, China
| | - Hui-Ming Cheng
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| |
Collapse
|
20
|
Song H, Yang Y, Geng J, Gu Z, Zou J, Yu C. Electron Tomography: A Unique Tool Solving Intricate Hollow Nanostructures. Adv Mater 2019; 31:e1801564. [PMID: 30160340 DOI: 10.1002/adma.201970272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/05/2018] [Indexed: 05/20/2023]
Abstract
Innovations in nanofabrication have expedited advances in hollow-structured nanomaterials with increasing complexity, which, at the same time, set challenges for the precise determination of their intriguing and complicated 3D configurations. Conventional transmission electron microscopy (TEM) analysis typically yields 2D projections of 3D objects, which in some cases is insufficient to reflect the genuine architectures of these 3D nano-objects, providing misleading information. Advanced analytical approaches such as focused ion beam (FIB) and ultramicrotomy enable the real slicing of nanomaterials, realizing the direct observation of inner structures but with limited spatial discrimination. Electron tomography (ET) is a technique that retrieves spatial information from a series of 2D electron projections at different tilt angles. As a unique and powerful tool kit, this technique has experienced great advances in its application in materials science, resolving the intricate 3D nanostructures. Here, the exceptional capability of the ET technique in the structural, chemical, and quantitative analysis of hollow-structured nanomaterials is discussed in detail. The distinct information derived from ET analysis is highlighted and compared with conventional analysis methods. Along with the advances in microscopy technologies, the state-of-the-art ET technique offers great opportunities and promise in the development of hollow nanomaterials.
Collapse
Affiliation(s)
- Hao Song
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Yannan Yang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jing Geng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Zhengying Gu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jin Zou
- Materials Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| |
Collapse
|
21
|
Song H, Yang Y, Geng J, Gu Z, Zou J, Yu C. Electron Tomography: A Unique Tool Solving Intricate Hollow Nanostructures. Adv Mater 2019; 31:e1801564. [PMID: 30160340 DOI: 10.1002/adma.201801564] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/05/2018] [Indexed: 06/08/2023]
Abstract
Innovations in nanofabrication have expedited advances in hollow-structured nanomaterials with increasing complexity, which, at the same time, set challenges for the precise determination of their intriguing and complicated 3D configurations. Conventional transmission electron microscopy (TEM) analysis typically yields 2D projections of 3D objects, which in some cases is insufficient to reflect the genuine architectures of these 3D nano-objects, providing misleading information. Advanced analytical approaches such as focused ion beam (FIB) and ultramicrotomy enable the real slicing of nanomaterials, realizing the direct observation of inner structures but with limited spatial discrimination. Electron tomography (ET) is a technique that retrieves spatial information from a series of 2D electron projections at different tilt angles. As a unique and powerful tool kit, this technique has experienced great advances in its application in materials science, resolving the intricate 3D nanostructures. Here, the exceptional capability of the ET technique in the structural, chemical, and quantitative analysis of hollow-structured nanomaterials is discussed in detail. The distinct information derived from ET analysis is highlighted and compared with conventional analysis methods. Along with the advances in microscopy technologies, the state-of-the-art ET technique offers great opportunities and promise in the development of hollow nanomaterials.
Collapse
Affiliation(s)
- Hao Song
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Yannan Yang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jing Geng
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Zhengying Gu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jin Zou
- Materials Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Chengzhong Yu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| |
Collapse
|
22
|
Chen Y, Xiang S, Wang L, Wang M, Wang C, Liu S, Zhang K, Yang B. Hollow Polypyrrole Nanospindles for Highly Effective Cancer Therapy. Chempluschem 2018; 83:1127-1134. [PMID: 31950703 DOI: 10.1002/cplu.201800430] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/15/2018] [Indexed: 11/10/2022]
Abstract
Polypyrrole (PPy) hollow nanostructures continue to attract the interest researchers because of their good biocompatibility, high photothermal conversion efficiency, and excellent stability. The preparation of PPy hollow nanostructures by the hard templating method without complicated post-synthetic treatment and additional oxidizing agents remains a challenge. In this work, we report a facile and novel hard templating method to fabricate hollow PPy nanospindles in which MIL-88(Fe) serves as the template. Fe3+ centers in MIL-88(Fe) could induce the polymerization of pyrrole to construct the shell, and MIL-88(Fe) would be decomposed by solvent water. This method did not require any extra oxidizing agents and post-synthetic treatment. Hollow PPy nanospindles exhibit excellent photothermal and drug loading ability, and the therapy effect of cancer was significant. This method provides a new hard templating approach for the synthesis of polymer hollow nanostructures.
Collapse
Affiliation(s)
- Yixin Chen
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Siyuan Xiang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Lu Wang
- Department of Oral Pathology School and Hospital of Stomatology, Jilin University, Changchun, 130021, P. R. China
| | - Mingyue Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Congcong Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Shuwei Liu
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Kai Zhang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| |
Collapse
|
23
|
Kang SG, Moon D, Jang J, Kim JY, Suh JY, Yoon E, Han HN, Choi IS. Flaw-Containing Alumina Hollow Nanostructures Have Ultrahigh Fracture Strength To Be Incorporated into High-Efficiency GaN Light-Emitting Diodes. Nano Lett 2018; 18:1323-1330. [PMID: 29361232 DOI: 10.1021/acs.nanolett.7b05009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the present study, we found that α-alumina hollow nanoshell structure can exhibit an ultrahigh fracture strength even though it contains a significant number of nanopores. By systematically performing in situ mechanical testing and finite element simulations, we could measure that the fracture strength of an α-alumina hollow nanoshell structure is about four times higher than that of the conventional bulk size α-alumina. The high fracture strength of the α-alumina hollow nanoshell structure can be explained in terms of conventional fracture mechanics, in that the position and size of the nanopores are the most critical factors determining the fracture strength, even at the nanoscales. More importantly, by deriving a fundamental understanding, we would be able to provide guidelines for the design of reliable ceramic nanostructures for advanced GaN light-emitting diodes (LEDs). To that end, we demonstrated how our ultrastrong α-alumina hollow nanoshell structures could be successfully incorporated into GaN LEDs, thereby greatly improving the luminous efficiency and output power of the LEDs by 2.2 times higher than that of conventional GaN LEDs.
Collapse
Affiliation(s)
- Sung-Gyu Kang
- Department of Materials Science and Engineering, RIAM, Seoul National University , Seoul 08826, Republic of Korea
- High Temperature Energy Materials Research Center, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
| | - Daeyoung Moon
- Department of Materials Science and Engineering, RIAM, Seoul National University , Seoul 08826, Republic of Korea
| | - Jeonghwan Jang
- Department of Materials Science and Engineering, RIAM, Seoul National University , Seoul 08826, Republic of Korea
| | - Ju-Young Kim
- School of Materials Science and Engineering, Ulsan National Institute of Science and Technology , Ulsan 44919, Republic of Korea
| | - Jin-Yoo Suh
- High Temperature Energy Materials Research Center, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
| | - Euijoon Yoon
- Department of Materials Science and Engineering, RIAM, Seoul National University , Seoul 08826, Republic of Korea
| | - Heung Nam Han
- Department of Materials Science and Engineering, RIAM, Seoul National University , Seoul 08826, Republic of Korea
| | - In-Suk Choi
- High Temperature Energy Materials Research Center, Korea Institute of Science and Technology , Seoul 02792, Republic of Korea
| |
Collapse
|
24
|
Trepka B, Erler P, Selzer S, Kollek T, Boldt K, Fonin M, Nowak U, Wolf D, Lubk A, Polarz S. Nanomorphology Effects in Semiconductors with Native Ferromagnetism: Hierarchical Europium (II) Oxide Tubes Prepared via a Topotactic Nanostructure Transition. Adv Mater 2018; 30:1703612. [PMID: 29152806 DOI: 10.1002/adma.201703612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Semiconductors with native ferromagnetism barely exist and defined nanostructures are almost unknown. This lack impedes the exploration of a new class of materials characterized by a direct combination of effects on the electronic system caused by quantum confinement effects with magnetism. A good example is EuO for which currently no reliable routes for nanoparticle synthesis can be established. Bottom-up approaches applicable to other oxides fail because of the labile oxidation state +II. Instead of targeting a direct synthesis, the two steps-"structure control" and "chemical transformation"-are separated. The generation of a transitional, hybrid nanophase is followed by its conversion into EuO under full conservation of all morphological features. Hierarchical EuO materials are now accessible in the shape of oriented nanodisks stacked to tubular particles. Magnetically, the coupling of either vortex or onion states has been found. An unexpected temperature dependence is governed by thermally activated transitions between these states.
Collapse
Affiliation(s)
- Bastian Trepka
- Department of Chemistry, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Philipp Erler
- Department of Physics, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Severin Selzer
- Department of Physics, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Tom Kollek
- Department of Chemistry, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Klaus Boldt
- Department of Chemistry, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Mikhail Fonin
- Department of Physics, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Ulrich Nowak
- Department of Physics, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| | - Daniel Wolf
- IFW Dresden e.V., Helmholtzstraße 20, D-01069, Dresden, Germany
| | - Axel Lubk
- IFW Dresden e.V., Helmholtzstraße 20, D-01069, Dresden, Germany
| | - Sebastian Polarz
- Department of Chemistry, University of Konstanz, Universitaetsstrasse 10, D-78457, Konstanz, Germany
| |
Collapse
|
25
|
Zhang C, Liu Y, Chang Y, Lu Y, Zhao S, Xu D, Dai Z, Han M, Bao J. Component-Controlled Synthesis of Necklace-Like Hollow Ni XRu y Nanoalloys as Electrocatalysts for Hydrogen Evolution Reaction. ACS Appl Mater Interfaces 2017; 9:17326-17336. [PMID: 28481106 DOI: 10.1021/acsami.7b01114] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Developing highly efficient and long-durable nanoalloy electrocatalysts toward the hydrogen evolution reaction (HER) are highly desirable for implementation of the water-splitting technique to prepare clean fuels. Though great progress has been achieved, controllable synthesis of hollow NixRuy nanoalloys with a wide component ratio range remains a challenge and their applications for HER have not been explored. Here, a series of necklace-like hollow NixRuy nanoalloys (Ni72Ru28, Ni63Ru37, Ni43Ru57, and Ni29Ru71) are prepared using the galvanic replacement reaction between the Ni nanochains and RuCl3·3H2O and the hollowing process based on the Kirkendall effect. Electrochemical tests reveal that those NixRuy nanoalloys can efficiently catalyze HER in acidic media. Among them, the Ni43Ru57 nanoalloy exhibits the highest catalytic activity with an overpotential of 41 mV to attain a current density of -10 mA cm-2, outperforming other NixRuy nanoalloys and close to commercial Pt/C. Additionally, its current density will exceed Pt/C catalyst as the overpotential surpasses 102 mV. Moreover, such Ni43Ru57 nanoalloy also shows an exceptional durability that can continuously work for 8 h only with a little loss of activity. Deduced from some featured spectroscopic and electrochemical analysis, the excellent catalytic performance of Ni43Ru57 nanoalloy is attributed to the proper component ratio and effective electronic coupling of Ni and Ru, causing the faster interfacial electron transfer kinetics and more available active sites on it compared with other NixRuy nanoalloy ones.
Collapse
Affiliation(s)
- Caihua Zhang
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
- College of Science, Nanjing Forestry University , Nanjing 210037, People's Republic of China
| | - Ying Liu
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Yingxue Chang
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Yanan Lu
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Shulin Zhao
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Dongdong Xu
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Zhihui Dai
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| | - Min Han
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
- State Key Laboratory of Coordination Chemistry, Nanjing National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, People's Republic of China
| | - Jianchun Bao
- Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Materials Science, Nanjing Normal University , Nanjing 210023, People's Republic of China
| |
Collapse
|
26
|
Qin P, Wang M, Li N, Zhu H, Ding X, Tang Y. Bubble-Sheet-Like Interface Design with an Ultrastable Solid Electrolyte Layer for High-Performance Dual-Ion Batteries. Adv Mater 2017; 29:1606805. [PMID: 28224685 DOI: 10.1002/adma.201606805] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/25/2017] [Indexed: 06/06/2023]
Abstract
In this work, a bubble-sheet-like hollow interface design on Al foil anode to improve the cycling stability and rate performance of aluminum anode based dual-ion battery is reported, in which, a carbon-coated hollow aluminum anode is used as both anode materials and current collector. This anode structure can guide the alloying position inside the hollow nanospheres, and also confine the alloy sizes within the hollow nanospheres, resulting in significantly restricted volumetric expansion and ultrastable solid electrolyte interface (SEI). As a result, the battery demonstrates an excellent long-term cycling stability within 1500 cycles with ≈99% capacity retention at 2 C. Moreover, this cell displays an energy density of 169 Wh kg-1 even at high power density of 2113 W kg-1 (10 C, charge and discharge within 6 min), which is much higher than most of conventional lithium ion batteries. The interfacial engineering strategy shown in this work to stabilize SEI layer and control the alloy forming position could be generalized to promote the research development of metal anodes based battery systems.
Collapse
Affiliation(s)
- Panpan Qin
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China
| | - Meng Wang
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Na Li
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Haili Zhu
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China
| | - Xuan Ding
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China
| | - Yongbing Tang
- Functional Thin Films Research Center, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| |
Collapse
|
27
|
Chen M, Cai F, Wang C, Wang Z, Meng L, Li F, Zhang P, Liu X, Zheng H. Observation of Metal Nanoparticles for Acoustic Manipulation. Adv Sci (Weinh) 2017; 4:1600447. [PMID: 28546912 PMCID: PMC5441484 DOI: 10.1002/advs.201600447] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/02/2016] [Indexed: 05/22/2023]
Abstract
Use of acoustic trapping for the manipulation of objects is invaluable to many applications from cellular subdivision to biological assays. Despite remarkable progress in a wide size range, the precise acoustic manipulation of 0D nanoparticles where all the structural dimensions are much smaller than the acoustic wavelength is still present challenges. This study reports on the observation of metal nanoparticles with different nanostructures for acoustic manipulation. Results for the first time exhibit that the hollow nanostructures play more important factor than size in the nanoscale acoustic manipulation. The acoustic levitation and swarm aggregations of the metal nanoparticles can be easily realized at low energy and clinically acceptable acoustic frequency by hollowing their nanostructures. In addition, the behaviors of swarm aggregations can be flexibly regulated by the applied voltage and frequency. This study anticipates that the strategy based on the unique properties of the metal hollow nanostructures and the manipulation method will be highly desirable for many applications.
Collapse
Affiliation(s)
- Mian Chen
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Feiyan Cai
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Chen Wang
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Zhiyong Wang
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Long Meng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Fei Li
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Pengfei Zhang
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Xin Liu
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical ImagingInstitute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| |
Collapse
|
28
|
Sen U, Erkartal M, Kung CW, Ramani V, Hupp JT, Farha OK. Proton Conducting Self-Assembled Metal-Organic Framework/Polyelectrolyte Hollow Hybrid Nanostructures. ACS Appl Mater Interfaces 2016; 8:23015-23021. [PMID: 27540749 DOI: 10.1021/acsami.6b05901] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein, a room temperature chemical process to synthesize functional, hollow nanostructures from zeolitic imidazolate framework-8 (ZIF-8) and poly(vinylphosphonic acid) (PVPA) is reported. Syntheses are initiated by physically blending the components-a process that is accompanied first by encapsulation of ZIF-8 crystallites by PVPA and then by fragmentation of the crystallites. The fragmentation process is driven by partial displacement of the methyl-imidazolate ligands of Zn(II) in ZIF-8 by phosphonate groups on PVPA. Differences in rates of diffusion for the components of the reactive mixture yield a Kirkendall-like effect that is expressed as a hollow-particle morphology. The obtained hollow nanostructures feature hybrid shells containing PVPA, ZIF-8, and their cross-reacted products. The hybrid structures display substantial proton conductivities that increase with increasing temperature, even under the anhydrous conditions prevailing at temperatures above the boiling point of water. For example, at T = 413 K the proton conductivity of ZIF-8@PVPA reaches 3.2 (±0.12) × 10(-3) S cm(-1), a value comparatively higher than that for PVPA (or ZIF-8) in isolation. The high value may reflect the availability in the hybrid structures of free (and partially free), amphoteric imidazole species, and their hydrogen-bonding interactions with phosphonate and/or phosphonic acid units. The persistence of ample conductivity at high temperature reflects the elimination of phosphonic acid group dehydration and dimerization-an effect that strikingly degrades the conductivity of pure PVPA under anhydrous conditions.
Collapse
Affiliation(s)
- Unal Sen
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | | | - Chung-Wei Kung
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemical Engineering, National Taiwan University , Taipei 10617, Taiwan
| | - Vijay Ramani
- Center for Electrochemical Science and Engineering, Department of Chemical and Biological Engineering, Illinois Institute of Technology , 10 West 33rd Street, Chicago, Illinois 60616, United States
| | - Joseph T Hupp
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Omar K Farha
- Department of Chemistry, Northwestern University , 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Faculty of Science, King Abdulaziz University , Jeddah, Saudi Arabia
| |
Collapse
|
29
|
Sun X, Kim J, Gilroy KD, Liu J, König TAF, Qin D. Gold-Based Cubic Nanoboxes with Well-Defined Openings at the Corners and Ultrathin Walls Less Than Two Nanometers Thick. ACS Nano 2016; 10:8019-25. [PMID: 27458731 DOI: 10.1021/acsnano.6b04084] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report a facile synthesis of Au-based cubic nanoboxes as small as 20 nm for the outer edge length, together with well-defined openings at the corners and walls fewer than 10 atomic layers (or <2 nm) in thickness. The success relies on the selective formation of Ag2O at the corners of Ag nanocubes, followed by the conformal deposition of Au on the side faces in a layer-by-layer fashion. When six atomic layers of Au are formed on the side faces to generate Ag@Au6L core-shell nanocubes, we can selectively remove the Ag2O patches at the corner sites using a weak acid, making it possible to further remove the Ag core by H2O2 etching without breaking the ultrathin Au shell. This synthetic approach works well for Ag nanocubes of 38 and 18 nm in edge length, and the wall thickness of the nanoboxes can be controlled down to 2 nm. The resultant Au nanoboxes exhibit strong plasmonic absorption in the near-infrared region, consistent with computational simulations.
Collapse
Affiliation(s)
- Xiaojun Sun
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Junki Kim
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University , Atlanta, Georgia 30332, United States
| | - Jingyue Liu
- Department of Physics, Arizona State University , Tempe, Arizona 85287, United States
| | - Tobias A F König
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute of Physical Chemistry and Polymer Physics , Hohe Straße 6, 01069 Dresden, Germany
| | - Dong Qin
- School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| |
Collapse
|
30
|
Liu R, Guo J, Ma G, Jiang P, Zhang D, Li D, Chen L, Guo Y, Ge G. Alloyed Crystalline Au-Ag Hollow Nanostructures with High Chemical Stability and Catalytic Performance. ACS Appl Mater Interfaces 2016; 8:16833-44. [PMID: 27268019 DOI: 10.1021/acsami.6b03728] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
For bimetallic nanoparticles (NPs), the degree of alloying is beginning to be recognized as a significant factor affecting the NP properties. Here, we report an alloyed crystalline Au-Ag hollow nanostructure that exhibits a high catalytic performance, as well as structural and chemical stability. The Au-Ag alloyed hollow and porous nanoshell structures (HPNSs) with different morphologies and subnanoscale crystalline structures were synthesized by adjusting the size of the sacrificial Ag NPs via a galvanic replacement reaction. The catalytic activities of the nanomaterials were evaluated by the model reaction of the catalytic reduction of p-nitrophenol by NaBH4 to p-aminophenol. The experimental results show that the subnanoscale crystalline structure of the Au-Ag bimetallic HPNSs has much greater significance than the apparent morphology does in determining the catalytic ability of the nanostructures. The Au-Ag alloyed HPNSs with better surface crystalline alloying microstructures and open morphologies were found to exhibit much higher catalytic reaction rates and better cyclic usage efficiencies, probably because of the better dispersion of active Au atoms within these materials. These galvanic replacement-synthesized alloyed Au-Ag HPNSs, fabricated by a facile method that avoids Ag degradation, have potential applications in catalysis, nanomedicine (especially in drug/gene delivery and cancer theranostics), and biosensing.
Collapse
Affiliation(s)
- Renxiao Liu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Jianhua Guo
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University , Baoding 071002, China
| | - Gang Ma
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Environmental Science, Hebei University , Baoding 071002, China
| | - Peng Jiang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Donghui Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Dexing Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Lan Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Yuting Guo
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| | - Guanglu Ge
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
| |
Collapse
|
31
|
Pang B, Yang X, Xia Y. Putting gold nanocages to work for optical imaging, controlled release and cancer theranostics. Nanomedicine (Lond) 2016; 11:1715-28. [PMID: 27348546 PMCID: PMC5827786 DOI: 10.2217/nnm-2016-0109] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/03/2016] [Indexed: 01/02/2023] Open
Abstract
Gold nanocages are hollow nanostructures with ultrathin, porous walls. They are bio-inert and their surface can be readily modified with functional groups to specifically interact with the biological system of interest. They have remarkable optical properties, including localized surface plasmon resonance peaks tunable to the near-infrared region, strong absorption and scattering, as well as two- and three-photon luminescence. With the establishment of robust protocols for both synthesis and surface functionalization, Au nanocages have been extensively explored for various biomedical applications. In this review, we begin with a brief account of the synthesis and properties of Au nanocages, and then highlight some of the recent developments in applying them to an array of biomedical applications related to optical imaging, controlled release and cancer theranostics.
Collapse
Affiliation(s)
- Bo Pang
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA 30332, USA
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China
| | - Xuan Yang
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, Atlanta, GA 30332, USA
- School of Chemistry & Biochemistry, School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| |
Collapse
|
32
|
Mel AAE, Tessier PY, Buffiere M, Gautron E, Ding J, Du K, Choi CH, Konstantinidis S, Snyders R, Bittencourt C, Molina-Luna L. Controlling the Formation of Nanocavities in Kirkendall Nanoobjects through Sequential Thermal Ex Situ Oxidation and In Situ Reduction Reactions. Small 2016; 12:2885-2892. [PMID: 27061060 DOI: 10.1002/smll.201600396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 02/19/2016] [Indexed: 06/05/2023]
Abstract
Controlling the porosity, the shape, and the morphology of Kirkendall hollow nanostructures is the key factor to tune the properties of these tailor-made nanomaterials which allow in turn broadening their applications. It is shown that by applying a continuous oxidation to copper nanowires following a temperature ramp protocol, one can synthesize cuprous oxide nanotubes containing periodic copper nanoparticles. A further oxidation of such nanoobjects allows obtaining cupric oxide nanotubes with a bamboo-like structure. On the other hand, by applying a sequential oxidation and reduction reactions to copper nanowires, one can synthesize hollow nanoobjects with complex shapes and morphologies that cannot be obtained using the Kirkendall effect alone, such as necklace-like cuprous oxide nanotubes, periodic solid copper nanoparticles or hollow cuprous oxide nanospheres interconnected with single crystal cuprous oxide nanorods, and aligned and periodic hollow nanospheres embedded in a cuprous oxide nanotube. The strategy demonstrated in this study opens new avenues for the engineering of hollow nanostructures with potential applications in gas sensing, catalysis, and energy storage.
Collapse
Affiliation(s)
- Abdel-Aziz El Mel
- Institut des Matériaux Jean Rouxel, IMN, Université de Nantes, CNRS, 2 rue de la Houssinière B.P. 32229, 44322, Nantes Cedex 3, France
| | - Pierre-Yves Tessier
- Institut des Matériaux Jean Rouxel, IMN, Université de Nantes, CNRS, 2 rue de la Houssinière B.P. 32229, 44322, Nantes Cedex 3, France
| | - Marie Buffiere
- Qatar Environment and Energy Research Institute (QEERI), Hamad Ben Khalifa University, Qatar Foundation, Doha, Qatar
| | - Eric Gautron
- Institut des Matériaux Jean Rouxel, IMN, Université de Nantes, CNRS, 2 rue de la Houssinière B.P. 32229, 44322, Nantes Cedex 3, France
| | - JunJun Ding
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Ke Du
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Chang-Hwan Choi
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Stephanos Konstantinidis
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering, University of Mons, 23 Place du Parc, B-7000, Mons, Belgium
| | - Rony Snyders
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering, University of Mons, 23 Place du Parc, B-7000, Mons, Belgium
| | - Carla Bittencourt
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering, University of Mons, 23 Place du Parc, B-7000, Mons, Belgium
| | - Leopoldo Molina-Luna
- Department of Materials- and Geosciences, Technische Universität Darmstadt, Alarich-Weiss-Strasse 2, 64287, Darmstadt, Germany
| |
Collapse
|
33
|
Liu B, Zhang L, Xiong W, Ma M. Cobalt-Nanocrystal-Assembled Hollow Nanoparticles for Electrocatalytic Hydrogen Generation from Neutral-pH Water. Angew Chem Int Ed Engl 2016; 55:6725-9. [PMID: 27125576 DOI: 10.1002/anie.201601367] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 03/09/2016] [Indexed: 11/10/2022]
Abstract
Highly active and stable electrocatalysts for hydrogen generation from neutral-pH water are highly desired, but very difficult to achieve. Herein we report a facile synthetic approach to cobalt nanocrystal assembled hollow nanoparticles (Co-HNP), which serve as an electrocatalyst for hydrogen generation from neutral-pH water. An electrode composed of Co-HNP on a carbon cloth (CC) produces cathodic current densities of 10 and 100 mA cm(-2) at overpotentials of -85 mV and -237 mV, respectively. The Co-HNP/CC electrode retains its high activity after 20 h hydrogen generation at a high current density of 150 mA cm(-2) , indicating the superior activity and stability of Co-HNP as electrocatalyst.
Collapse
Affiliation(s)
- Bingrui Liu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Lin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Weilin Xiong
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Mingming Ma
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P.R. China.
| |
Collapse
|
34
|
Xu X, Zhang Z, Wang X. Well-Defined Metal-Organic-Framework Hollow Nanostructures for Catalytic Reactions Involving Gases. Adv Mater 2015; 27:5365-71. [PMID: 26172949 DOI: 10.1002/adma.201500789] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/12/2015] [Indexed: 05/06/2023]
Abstract
The miniaturization of metal-organic-framework (MOF) crystals to the nanoscale brings enhanced or novel properties and fulfils specific application needs. The focus here is on a kind of nanoMOF with special configurations and outstanding properties - the hollow structure. Firstly recent advances on the synthesis of MOF hollow nanostructures are introduced. Then, a novel approach based on a heterometallic system is highlighted, by which the facile synthesis of well-defined hollow MOF structures with high complexity is achieved. Moreover, MOF hollow nanostructures are emphasized as hosts/shell materials to incorporate functional catalysts that show dramatically enhanced performances in gas-involved reactions due to their inherent gas-absorption/storage properties.
Collapse
Affiliation(s)
- Xiaobin Xu
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Zhicheng Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Xun Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| |
Collapse
|
35
|
Yang Y, Wang F, Yang Q, Hu Y, Yan H, Chen YZ, Liu H, Zhang G, Lu J, Jiang HL, Xu H. Hollow metal-organic framework nanospheres via emulsion-based interfacial synthesis and their application in size-selective catalysis. ACS Appl Mater Interfaces 2014; 6:18163-71. [PMID: 25247890 DOI: 10.1021/am505145d] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Metal-organic frameworks (MOFs) represent an emerging class of crystalline materials with well-defined pore structures and hold great potentials in a wide range of important applications. The functionality of MOFs can be further extended by integration with other functional materials, e.g., encapsulating metal nanoparticles, to form hybrid materials with novel properties. In spite of various synthetic approaches that have been developed recently, a facile method to prepare hierarchical hollow MOF nanostructures still remains a challenge. Here we describe a facile emulsion-based interfacial reaction method for the large-scale synthesis of hollow zeolitic imidazolate framework 8 (ZIF-8) nanospheres with controllable shell thickness. We further demonstrate that functional metal nanoparticles such as Pd nanocubes can be encapsulated during the emulsification process and used for heterogeneous catalysis. The inherently porous structure of ZIF-8 shells enables encapsulated catalysts to show size-selective hydrogenation reactions.
Collapse
Affiliation(s)
- Yufen Yang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, §Department of Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, and ∥Department of Chemical Physics, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei, Anhui 230026, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Yang XF, Yang JH, Zhong YL, Gariepy V, Trudeau ML, Zaghib K, Ying JY. Hollow melon-seed-shaped lithium iron phosphate micro- and sub-micrometer plates for lithium-ion batteries. ChemSusChem 2014; 7:1618-1622. [PMID: 24700813 DOI: 10.1002/cssc.201400152] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 06/03/2023]
Abstract
Melon-seed-shaped LiFePO4 hollow micro- and sub-micrometer plates have been synthesized via a polyol-assisted hydrothermal method. The as-prepared LiFePO4 hollow materials were new with regard to their single-crystalline shells with large ac surfaces. Based on the detailed analysis of time-dependent studies, a possible growth mechanism was proposed involving nucleation, anisotropic growth, selective etching, and reversed recrystallization. The effects of polyol concentration, reaction temperature, and feeding sequence of precursors on the growth of LiFePO4 materials were investigated. The electrochemical properties of as-prepared LiFePO4 hollow materials were examined as cathode materials.
Collapse
Affiliation(s)
- Xian-Feng Yang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore, 138669 (Singapore)
| | | | | | | | | | | | | |
Collapse
|
37
|
El Mel AA, Buffière M, Tessier PY, Konstantinidis S, Xu W, Du K, Wathuthanthri I, Choi CH, Bittencourt C, Snyders R. Highly ordered hollow oxide nanostructures: the Kirkendall effect at the nanoscale. Small 2013; 9:2838-43. [PMID: 23440974 DOI: 10.1002/smll.201202824] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 12/26/2012] [Indexed: 05/26/2023]
Abstract
Highly ordered ultra-long oxide nanotubes are fabricated by a simple two-step strategy involving the growth of copper nanowires on nanopatterned template substrates by magnetron sputtering, followed by thermal annealing in air. The formation of such tubular nanostructures is explained according to the nanoscale Kirkendall effect. The concept of this new fabrication route is also extendable to create periodic zero-dimensional hollow nanostructures.
Collapse
Affiliation(s)
- Abdel-Aziz El Mel
- Chimie des Interactions Plasma-Surface (ChIPS), CIRMAP, Research Institute for Materials Science and Engineering, University of Mons, 23 Place du Parc, B-7000 Mons, Belgium.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Petzetakis N, Robin MP, Patterson JP, Kelley EG, Cotanda P, Bomans PHH, Sommerdijk NAJM, Dove AP, Epps TH, O'Reilly RK. Hollow block copolymer nanoparticles through a spontaneous one-step structural reorganization. ACS Nano 2013; 7:1120-8. [PMID: 23391297 PMCID: PMC3589578 DOI: 10.1021/nn400272p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The spontaneous one-step synthesis of hollow nanocages and nanotubes from spherical and cylindrical micelles based on poly(acrylic acid)-b-polylactide (P(AA)-b-P(LA)) block copolymers (BCPs) has been achieved. This structural reorganization, which occurs simply upon drying of the samples, was elucidated by transmission electron microscopy (TEM) and atomic force microscopy (AFM). We show that it was necessary to use stain-free imaging to examine these nanoscale assemblies, as the hollow nature of the particles was obscured by application of a heavy metal stain. Additionally, the internal topology of the P(AA)-b-P(LA) particles could be tuned by manipulating the drying conditions to give solid or compartmentalized structures. Upon resuspension, these reorganized nanoparticles retain their hollow structure and display significantly enhanced loading of a hydrophobic dye compared to the original solid cylinders.
Collapse
Affiliation(s)
- Nikos Petzetakis
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Mathew P. Robin
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Joseph P. Patterson
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Elizabeth G. Kelley
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Pepa Cotanda
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Paul H. H. Bomans
- Department of Chemical Engineering and Chemistry, Technical University Eindhoven, P.O. Box 513, The Netherlands
| | - Nico A. J. M. Sommerdijk
- Department of Chemical Engineering and Chemistry, Technical University Eindhoven, P.O. Box 513, The Netherlands
| | - Andrew P. Dove
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
| | - Thomas H. Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- Corresponding Author; R.K.O'
| | - Rachel K. O'Reilly
- Department of Chemistry, Library Road, University of Warwick, Coventry, CV4 7AL, UK
- Corresponding Author; R.K.O'
| |
Collapse
|
39
|
Au L, Chen Y, Zhou F, Camargo PHC, Lim B, Li ZY, Ginger DS, Xia Y. Synthesis and Optical Properties of Cubic Gold Nanoframes. Nano Res 2008; 1:441-449. [PMID: 20200595 PMCID: PMC2830659 DOI: 10.1007/s12274-008-8046-z] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2008] [Revised: 10/14/2008] [Accepted: 10/17/2008] [Indexed: 05/20/2023]
Abstract
This paper describes a facile method of preparing cubic Au nanoframes with open structures via the galvanic replacement reaction between Ag nanocubes and AuCl(2) (-). A mechanistic study of the reaction revealed that the formation of Au nanoframes relies on the diffusion of both Au and Ag atoms. The effect of the edge length and ridge thickness of the nanoframes on the localized surface plasmon resonance peak was explored by a combination of discrete dipole approximation calculations and single nanoparticle spectroscopy. With their hollow and open structures, the Au nanoframes represent a novel class of substrates for applications including surface plasmonics and surface-enhanced Raman scattering.
Collapse
Affiliation(s)
- Leslie Au
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Yeechi Chen
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Fei Zhou
- Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
| | - Pedro H. C. Camargo
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
| | - Byungkwon Lim
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
| | - Zhi-Yuan Li
- Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
| | - David S. Ginger
- Department of Chemistry, University of Washington, Seattle, Washington 98195, USA
| | - Younan Xia
- Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
- Address correspondence to
| |
Collapse
|