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Yao L, Zhang F, Yang S, Zhang H, Li Y, Yang C, Yang H, Cheng Q. Sub-2 nm IrRuNiMoCo High-Entropy Alloy with Ir-Rich Medium-Entropy Oxide Shell to Boost Acidic Oxygen Evolution. Adv Mater 2024:e2314049. [PMID: 38516927 DOI: 10.1002/adma.202314049] [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: 12/22/2023] [Revised: 03/07/2024] [Indexed: 03/23/2024]
Abstract
Ensuring high catalytic activity and durability at low Ir usage is still a big challenge for the development of electrocatalysts towards oxygen evolution reaction (OER) in proton exchange membrane water electrolysis (PEMWE). Here, a rapid liquid-reduction combined with surface galvanic replacement strategy is reported to synthesize the sub 2 nm high-entropy alloy (HEA) nanoparticles featured with Ir-rich IrRuNiMo medium-entropy oxide shell (Ir-MEO) and a IrRuCoNiMo HEA core (HEA@Ir-MEO), which exhibits a low overpotential of 243 mV at 10 mA cm-2 and high mass activity (261.5 A gIr -1). Advanced spectroscopies reveal that the Ir-rich MEO shell inhibits the severe structural evolution of transition metals upon the OER, thus guaranteeing the structural stability. In-situ DEMS, activation energy analysis and DFT calculations unveil that the OER on HEA@Ir-MEO follows an adsorbate evolution mechanism pathway, where the energy barrier of rate-determining step is substantially lowered, interpreting the enhanced OER kinetics. The optimized catalyst is assembled into PEM electrolyzer with low Ir usage of ca. 0.4 mg cm-2, and to give the excellent performance (1.85 V/3.0 A cm-2 °C), long-term stability (>500 h@1.0 Acm-2) and low energy consumption (3.98 kWh Nm-3 H2 @1.0 A cm-2), realizing the dramatical reduction of hydrogen production cost to USD 0.88 per kg H2. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Longping Yao
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Fengru Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Shuai Yang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
- School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China
| | - Hui Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Yuze Li
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Chenlu Yang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Hui Yang
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
| | - Qingqing Cheng
- Shanghai Advanced Research Institute, Chinese Academy of Science, Shanghai, 201210, P. R. China
- University of Chinese Academy of Science, Beijing, 100049, China
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Kuang H, Xu Z, Tan X, Yu K, Chen C. Highly Dispersed Ultrasmall High-Entropy Alloys Nanoparticles as Efficient Electrocatalysts for Oxygen Reduction in Acidic Media. Small 2024:e2308421. [PMID: 38221693 DOI: 10.1002/smll.202308421] [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: 09/22/2023] [Revised: 12/24/2023] [Indexed: 01/16/2024]
Abstract
High-entropy alloys nanoparticles (HEAs NPs) have gained considerable attention due to their extensive compositional tunability and intriguing catalytic properties. However, the synthesis of highly dispersed ultrasmall HEAs NPs remains a formidable challenge due to their inherent thermodynamic instability. In this study, highly dispersed ultrasmall (ca. 2 nm) PtCuGaFeCo HEAs NPs are synthesized using a one-pot solution-based method at 160 °C and atmospheric pressure. The PtCuGaFeCo NPs exhibit good catalytic activity for the oxygen reduction reaction (ORR). The half-wave potential relative to the reversible hydrogen electrode (RHE) reaches 0.88 V, and the mass activity and specific activity are approximately six times and four times higher than that of the commercial Pt/C catalyst. Based on X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) analyses, the surface strain and optimized coordination environments of PtCuGaFeCo have led to high ORR activities in acidic media. Moreover, the ultrasmall size also plays an important role in enhancing catalytic performance. The work presents a facile and viable synthesis strategy for preparing the ultrasmall HEAs NPs, offering great potential in energy and electrocatalysis applications through entropy engineering.
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Affiliation(s)
- Huayi Kuang
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Zhiyuan Xu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Xin Tan
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Ke Yu
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Chen Chen
- Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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Lobo K, Gangaiah VK, Alex C, John NS, Ramakrishna Matte HSS. Spontaneous Decoration of Ultrasmall Pt Nanoparticles on Size-Separated MoS 2 Nanosheets. Chemistry 2023; 29:e202301596. [PMID: 37497808 DOI: 10.1002/chem.202301596] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/23/2023] [Accepted: 07/23/2023] [Indexed: 07/28/2023]
Abstract
Liquid exfoliation can be considered as a viable approach for the scalable production of 2D materials due to its various benefits, although the polydispersity in the obtained nanosheet size hinders their straightforward incorporation. Size-separation can help alleviate these concerns, however a correlation between nanosheet size and property needs to be established to bring about size-specific applicability. Herein, size-selected aqueous nanosheet dispersions have been obtained via centrifugation-based protocols, and their chemical activity in the spontaneous reduction of chloroplatinic acid is investigated. Growth of ultrasmall Pt nanoparticles was achieved on nanosheet surfaces without a need for reducing agents, and stark differences in the nanoparticle coverage were observed as a function of nanosheet size. Defects in the nanosheets were probed via Raman spectroscopy, and correlated to the observed size-activity. Additionally, the effect of reaction temperature during synthesis was investigated. The electrochemical activity of the ultrasmall Pt nanoparticle decorated MoS2 nanosheets was evaluated for the hydrogen evolution reaction, and enhancement in performance was observed with nanosheet size, and nanoparticle decoration density. These findings shine light on the significance of nanosheet size in controlling spontaneous reduction reactions, and provide a deeper insight to intrinsic properties of liquid exfoliated nanosheets.
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Affiliation(s)
- Kenneth Lobo
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Manipal Academy of Higher Education, Manipal, 576 104, India
| | - Vijaya Kumar Gangaiah
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - Chandraraj Alex
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - Neena S John
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
| | - H S S Ramakrishna Matte
- Energy Materials Laboratory, Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
- Centre for Nano and Soft Matter Sciences, Arkavathi campus, Survey No.7, Shivanapura, Dasanapura Hobli, Bengaluru, 562162, India
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Liu T, Guo C, Xu S, Hu G, Wang L. A Novel Strategy to Improve Tumor Targeting of Hydrophilic Drugs and Nanoparticles for Imaging Guided Synergetic Therapy. Adv Healthc Mater 2023; 12:e2300883. [PMID: 37437241 DOI: 10.1002/adhm.202300883] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/12/2023] [Accepted: 07/09/2023] [Indexed: 07/14/2023]
Abstract
The fast renal clearance of hydrophilic small molecular anticancer drugs and ultrasmall nanoparticles (NPs) results in the low utilization rate and certain side effects, thus improving the tumor targeting is highly desired but faces great challenges. A novel and general β-cyclodextrin (CD) aggregation-induced assembly strategy to fabricate doxorubicin (DOX) and CD-coated NPs (such as Au) co-encapsulated pH-responsive nanocomposites (NCs) is proposed. By adding DOX×HCl and reducing pH in a reversed microemulsion system, hydrophilic CD-coated AuNPs rapidly assemble into large NCs. Then in situ polymerization of dopamine and sequentially coordinating with Cu2+ on the surface of NCs provide extra weak acid responsiveness, chemodynamic therapy (CDT), and improved biocompatibility as well as stability. The subsequent tumor microenvironment responsive dissociation notably improves their passive tumor targeting, bioavailability, imaging, and therapeutic capabilities, as well as facilitates their internalization by tumor cells and metabolic clearance, thereby reducing side effects. The combination of polymerized dopamine and assembled AuNPs reinforces photothermal capability, thus further boosting CDT through thermally amplifying Cu-catalyzed Fenton-like reaction. Both in vitro and in vivo studies confirm the desirable outcomes of these NCs as photoacoustic imaging guided trimodal (thermally enhanced CDT, photothermal therapy, and chemotherapy) synergistic tumor treatment agents with minimal systemic toxicity.
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Affiliation(s)
- Taoxia Liu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chang Guo
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Suying Xu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Gaofei Hu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Leyu Wang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, China
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Viola G, Floriani F, Barracchia CG, Munari F, D'Onofrio M, Assfalg M. Ultrasmall Gold Nanoparticles as Clients of Biomolecular Condensates. Chemistry 2023; 29:e202301274. [PMID: 37293933 DOI: 10.1002/chem.202301274] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/29/2023] [Accepted: 06/09/2023] [Indexed: 06/10/2023]
Abstract
Liquid-liquid phase separation (LLPS) of biopolymers to form condensates is a widespread phenomenon in living cells. Agents that target or alter condensation can help uncover elusive physiological and pathological mechanisms. Owing to their unique material properties and modes of interaction with biomolecules, nanoparticles represent attractive condensate-targeting agents. Our work focused on elucidating the interaction between ultrasmall gold nanoparticles (usGNPs) and diverse types of condensates of tau, a representative phase-separating protein associated with neurodegenerative disorders. usGNPs attract considerable interest in the biomedical community due to unique features, including emergent optical properties and good cell penetration. We explored the interaction of usGNPs with reconstituted self-condensates of tau, two-component tau/polyanion and three-component tau/RNA/alpha-synuclein coacervates. The usGNPs were found to concentrate into condensed liquid droplets, consistent with the formation of dynamic client (nanoparticle) - scaffold (tau) interactions, and were observable thanks to their intrinsic luminescence. Furthermore, usGNPs were capable to promote LLPS of a protein domain which is unable to phase separate on its own. Our study demonstrates the ability of usGNPs to interact with and illuminate protein condensates. We anticipate that nanoparticles will have broad applicability as nanotracers to interrogate phase separation, and as nanoactuators controlling the formation and dissolution of condensates.
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Affiliation(s)
- Giovanna Viola
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | - Fulvio Floriani
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | | | - Francesca Munari
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
| | | | - Michael Assfalg
- Department of Biotechnology, University of Verona, 37134, Verona, Italy
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6
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Callmann CE, Vasher MK, Das A, Kusmierz CD, Mirkin CA. In Vivo Behavior of Ultrasmall Spherical Nucleic Acids. Small 2023:e2300097. [PMID: 36905236 DOI: 10.1002/smll.202300097] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/09/2023] [Indexed: 05/10/2023]
Abstract
The biological properties of spherical nucleic acids (SNAs) are largely independent of nanoparticle core identity but significantly affected by oligonucleotide surface density. Additionally, the payload-to-carrier (i.e., DNA-to-nanoparticle) mass ratio of SNAs is inversely proportional to core size. While SNAs with many core types and sizes have been developed, all in vivo analyses of SNA behavior have been limited to cores >10 nm in diameter. However, "ultrasmall" nanoparticle constructs (<10 nm diameter) can exhibit increased payload-to-carrier ratios, reduced liver accumulation, renal clearance, and enhanced tumor infiltration. Therefore, we hypothesized that SNAs with ultrasmall cores exhibit SNA-like properties, but with in vivo behavior akin to traditional ultrasmall nanoparticles. To investigate, we compared the behavior of SNAs with 1.4-nm Au102 nanocluster cores (AuNC-SNAs) and SNAs with 10-nm gold nanoparticle cores (AuNP-SNAs). Significantly, AuNC-SNAs possess SNA-like properties (e.g., high cellular uptake, low cytotoxicity) but show distinct in vivo behavior. When intravenously injected in mice, AuNC-SNAs display prolonged blood circulation, lower liver accumulation, and higher tumor accumulation than AuNP-SNAs. Thus, SNA-like properties persist at the sub-10-nm length scale and oligonucleotide arrangement and surface density are responsible for the biological properties of SNAs. This work has implications for the design of new nanocarriers for therapeutic applications.
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Affiliation(s)
- Cassandra E Callmann
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Matthew K Vasher
- Department of Biomedical Engineering, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Anindita Das
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Caroline D Kusmierz
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
| | - Chad A Mirkin
- Department of Chemistry, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
- Department of Biomedical Engineering, International Institute for Nanotechnology, Northwestern University, Evanston, IL, 60208, USA
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7
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Wang H, Zhang Y, Zhang Y, Li Y, Wang X, Wang H, Wu WD, Bao X, Wu Z. Aerosol Spray Drying Guided Synthesis of Ultrasmall Alloyed Bimetallic Nanoparticles Supported on Silica for Catalytic Semihydrogenation. Small 2023; 19:e2204744. [PMID: 36494189 DOI: 10.1002/smll.202204744] [Citation(s) in RCA: 3] [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] [Received: 08/02/2022] [Revised: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Supported bimetallic nanoparticles (NPs) with ultrasmall sizes and homogeneous alloying are attractive for catalysis. However, facile synthesis of this type of material remains very challenging. Here, the aerosol drying impregnation method for rapid, scalable, and general synthesis of silica-supported bimetallic NPs is proposed. The method relies on aerosol spray drying to promote the mixing and dispersing of binary metal precursors on SiO2 . It is capable of controlling the composition and size of bimetallic NPs and avoids the use of expensive metal complex salts and complicated experiment procedures. Twelve permutations combining a noble metal (Pd, Ru, and Pt) and a base one (Fe, Co, Ni, and Cu) with ultrasmall sizes (1.4-2.2 nm in average size), uniform dispersion, and good alloying are synthesized. Interesting activity and selectivity trends in catalytic semihydrogenation of phenylacetylene over the supported Pd-based NPs can be observed. The silica-supported PdNi NPs deliver both high activity and styrene selectivity. Spectroscopic and density functional theory calculation results reveal the improved chemoselectivity originated from the suitably down-shifted d-band center of the PdNi NPs inducing an increased energy barrier for overhydrogenation and a weakened styrene adsorption.
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Affiliation(s)
- Hao Wang
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Yi Zhang
- Department of Chemistry, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Yali Zhang
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Yunqing Li
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Xiaoning Wang
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Huifang Wang
- Department of Chemistry, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Winston Duo Wu
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Xiaoguang Bao
- Department of Chemistry, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
| | - Zhangxiong Wu
- Particle Engineering Laboratory, School of Chemical and Environmental Engineering, and Suzhou Key Laboratory of Novel Semiconductor-optoelectronics Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, No. 199, Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, P. R. China
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Xu L, Wang X, Wang R, Liu S, Xu M. Engineered Macrophages: A Safe-by-Design Approach for the Tumor Targeting Delivery of Sub-5 nm Gold Nanoparticles. Small 2023; 19:e2205474. [PMID: 36372550 DOI: 10.1002/smll.202205474] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/16/2022] [Indexed: 06/16/2023]
Abstract
Ultrasmall nanoparticles (NPs) are a promising platform for the diagnosis and therapy of cancer, but the particles in sizes as small as several nanometers have an ability to translocate across biological barriers, which may bring unpredictable health risks. Therefore, it is essential to develop workable cell-based tools that can deliver ultrasmall NPs to the tumor in a safer manner. Here, this work uses macrophages as a shuttle to deliver sub-5 nm PEGylated gold (Au) NPs to tumors actively or passively, while reducing the accumulation of Au NPs in the brain. This work demonstrates that sub-5 nm Au NPs can be rapidly exocytosed from live macrophages, reaching 45.6% within 24 h, resulting in a labile Au NP-macrophage system that may release free Au NPs into the blood circulation in vivo. To overcome this shortcoming, two straightforward methods are used to engineer macrophages to obtain "half-dead" and "dead" macrophages. Although the efficiency of engineered macrophages for delivering sub-5 nm Au NPs to tumors is 2.2-3.8% lower than that of free Au NPs via the passive enhanced permeability and retention effect, this safe-by-design approach can dramatically reduce the accumulation of Au NPs in the brain by more than one order of magnitude. These promising approaches offer an opportunity to expand the immune cell- or stem cell-mediated delivery of ultrasmall NPs for the diagnosis and therapy of diseases in a safer way in the future.
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Affiliation(s)
- Lining Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xudong Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Ruixia Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ming Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
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9
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Viola G, Barracchia CG, Tira R, Parolini F, Leo G, Bellanda M, Munari F, Capaldi S, D’Onofrio M, Assfalg M. New Paradigm for Nano-Bio Interactions: Multimolecular Assembly of a Prototypical Disordered Protein with Ultrasmall Nanoparticles. Nano Lett 2022; 22:8875-8882. [PMID: 36346924 PMCID: PMC9706667 DOI: 10.1021/acs.nanolett.2c02902] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 10/24/2022] [Indexed: 05/20/2023]
Abstract
Understanding the interactions between nanoparticles (NPs) and proteins is crucial for the successful application of NPs in biological contexts. Protein adsorption is dependent on particle size, and protein binding to ultrasmall (1-3 nm) NPs is considered to be generally weak. However, most studies have involved structured biomacromolecules, while the interactions of ultrasmall NPs with intrinsically disordered proteins (IDPs) have remained elusive. IDPs are abundant in eukaryotes and found to associate with NPs intracellularly. As a model system, we focused on ultrasmall gold nanoparticles (usGNPs) and tau, a cytosolic IDP associated with Alzheimer's disease. Using site-resolved NMR, steady-state fluorescence, calorimetry, and circular dichroism, we reveal that tau and usGNPs form stable multimolecular assemblies, representing a new type of nano-bio interaction. Specifically, the observed interaction hot spots explain the influence of usGNPs on tau conformational transitions, with implications for the intracellular targeting of aberrant IDP aggregation.
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Affiliation(s)
- Giovanna Viola
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
| | | | - Roberto Tira
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
| | | | - Giulia Leo
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Massimo Bellanda
- Department
of Chemistry, University of Padova, 35131 Padova, Italy
| | - Francesca Munari
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
| | - Stefano Capaldi
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
| | | | - Michael Assfalg
- Department
of Biotechnology, University of Verona, 37134 Verona, Italy
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10
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Rocchi P, Labied L, Doussineau T, Julien M, Giroud B, Vulliet E, Randon J, Tillement O, Hagège A, Lux F. Identification of Molecular Fragments in Equilibrium with Polysiloxane Ultrasmall Nanoparticles. Nanomaterials (Basel) 2022; 12:nano12050738. [PMID: 35269226 PMCID: PMC8912117 DOI: 10.3390/nano12050738] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 02/17/2022] [Accepted: 02/18/2022] [Indexed: 11/16/2022]
Abstract
During recent decades, ultrasmall inorganic nanoparticles have attracted considerable interest due to their favorable biodistribution, pharmacokinetics and theranostic properties. In particular, AGuIX nanoparticles made of polysiloxane and gadolinium chelates were successfully translated to the clinics. In an aqueous medium, these nanoparticles are in dynamic equilibrium with polysiloxane fragments due to the hydrolysis of Si-O-Si bonds. Thanks to high-performance liquid chromatography coupled with electrospray ionization mass spectrometry, all these fragments were separated and identified.
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Affiliation(s)
- Paul Rocchi
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR 5306, 69622 Villeurbanne, France; (P.R.); (L.L.); (O.T.)
- NH TherAguix S.A, 29 Chemin du Vieux Chêne, 38240 Meylan, France; (T.D.); (M.J.)
| | - Lucie Labied
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR 5306, 69622 Villeurbanne, France; (P.R.); (L.L.); (O.T.)
- Institut des Sciences Analytiques, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, UMR 5280, 69100 Villeurbanne, France; (B.G.); (E.V.); (J.R.); (A.H.)
| | - Tristan Doussineau
- NH TherAguix S.A, 29 Chemin du Vieux Chêne, 38240 Meylan, France; (T.D.); (M.J.)
| | - Michel Julien
- NH TherAguix S.A, 29 Chemin du Vieux Chêne, 38240 Meylan, France; (T.D.); (M.J.)
| | - Barbara Giroud
- Institut des Sciences Analytiques, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, UMR 5280, 69100 Villeurbanne, France; (B.G.); (E.V.); (J.R.); (A.H.)
| | - Emmanuelle Vulliet
- Institut des Sciences Analytiques, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, UMR 5280, 69100 Villeurbanne, France; (B.G.); (E.V.); (J.R.); (A.H.)
| | - Jérôme Randon
- Institut des Sciences Analytiques, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, UMR 5280, 69100 Villeurbanne, France; (B.G.); (E.V.); (J.R.); (A.H.)
| | - Olivier Tillement
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR 5306, 69622 Villeurbanne, France; (P.R.); (L.L.); (O.T.)
| | - Agnès Hagège
- Institut des Sciences Analytiques, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, UMR 5280, 69100 Villeurbanne, France; (B.G.); (E.V.); (J.R.); (A.H.)
| | - François Lux
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR 5306, 69622 Villeurbanne, France; (P.R.); (L.L.); (O.T.)
- Institut Universitaire de France (IUF), 75000 Paris, France
- Correspondence: ; Tel.: +33-(0)4-7243-1200
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11
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Hof F, Poggini L, Otero E, Gobaut B, Gonidec M, Duttine M, Rosa P, Sandre O, Pénicaud A. Magnetic Ordering in Ultrasmall Potassium Ferrite Nanoparticles Grown on Graphene Nanoflakes. ACS Appl Mater Interfaces 2022; 14:3130-3142. [PMID: 34981916 DOI: 10.1021/acsami.1c19353] [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
Magnetic nanoparticles are central to the development of efficient hyperthermia treatments, magnetic drug carriers, and multimodal contrast agents. While the magnetic properties of small crystalline iron oxide nanoparticles are well understood, the superparamagnetic size limit constitutes a significant barrier for further size reduction. Iron (oxy)hydroxide phases, albeit very common in the natural world, are far less studied, generally due to their poor crystallinity. Templating ultrasmall nanoparticles on substrates such as graphene is a promising method to prevent aggregation, typically an issue for both material characterization and applications. We generate ultrasmall nanoparticles, directly on the carbon framework by the reaction of a graphenide potassium solution, charged graphene flakes, with iron(II) salts. After mild water oxidation, the obtained composite material consists of ultrasmall potassium ferrite nanoparticles bound to the graphene nanoflakes. Magnetic properties as evidenced by magnetometry and X-ray magnetic circular dichroism, with open magnetic hysteresis loops near room temperature, are widely different from classical ultrasmall superparamagnetic iron oxide nanoparticles. The large value obtained for the effective magnetic anisotropy energy density Keff accounts for the presence of magnetic ordering at rather high temperatures. The synthesis of ultrasmall potassium ferrite nanoparticles under such mild conditions is remarkable given the harsh conditions used for the classical syntheses of bulk potassium ferrites. Moreover, the potassium incorporation in the crystal lattice occurs in the presence of potassium cations under mild conditions. A transfer of this method to related reactions would be of great interest, which underlines the synthetic value of this study. These findings also give another view on the previously reported electrocatalytic properties of these nanocomposite materials, especially for the sought-after oxygen reduction/evolution reaction. Finally, their longitudinal and transverse proton NMR relaxivities when dispersed in water were assessed at 37 °C under a magnetic field of 1.41 T, allowing potential applications in biological imaging.
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Affiliation(s)
- Ferdinand Hof
- University of Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR5031, 33600 Pessac, France
| | - Lorenzo Poggini
- University of Bordeaux, CNRS, Bordeaux-INP, ICMCB, UMR 5026, F-33600 Pessac, Cedex, France
| | - Edwige Otero
- Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, BP 48, F-91192 Gif sur Yvette, France
| | - Benoît Gobaut
- Synchrotron SOLEIL, L'Orme des Merisiers Saint Aubin, BP 48, F-91192 Gif sur Yvette, France
| | - Mathieu Gonidec
- University of Bordeaux, CNRS, Bordeaux-INP, ICMCB, UMR 5026, F-33600 Pessac, Cedex, France
| | - Mathieu Duttine
- University of Bordeaux, CNRS, Bordeaux-INP, ICMCB, UMR 5026, F-33600 Pessac, Cedex, France
| | - Patrick Rosa
- University of Bordeaux, CNRS, Bordeaux-INP, ICMCB, UMR 5026, F-33600 Pessac, Cedex, France
| | - Olivier Sandre
- University of Bordeaux, CNRS, Bordeaux INP, LCPO, UMR-5629, F-33600 Pessac, France
| | - Alain Pénicaud
- University of Bordeaux, CNRS, Centre de Recherche Paul Pascal, UMR5031, 33600 Pessac, France
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12
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Zheng R, Zhao Q, Qing W, Li S, Liu Z, Li Q, Huang Y. Carrier-Free Delivery of Ultrasmall π-Conjugated Oligomer Nanoparticles with Photothermal Conversion over 80% for Cancer Theranostics. Small 2022; 18:e2104521. [PMID: 34821029 DOI: 10.1002/smll.202104521] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 07/30/2021] [Revised: 10/05/2021] [Indexed: 06/13/2023]
Abstract
High-performance photothermal theranostics is urgently desired for cancer therapy because of their good controllability and noninvasive features. The relatively low photothermal conversion efficiency is still at the drawbacks because of the absence of efficient extraneous carriers. Herein, a carrier-free nanomedicine is developed to in vivo self-deliver organic photothermal agents for efficient cancer phototheranostics. By a facile self-assembly strategy, the near-infrared (NIR)-absorbing conjugated oligomer IDIC-4F is fabricated into a carrier-free nanoparticle (DCF-P), showing ultrasmall size of nearly 4.0 nm with a nearly 100% of drug loading capacity. Notably, DCF-P achieves a superhigh photothermal conversion efficiency of 80.5% that is far greater than that of IDIC-4F-loaded nanomicelle DCF-M (57.3%). With the guidance of NIR fluorescence and photoacoustic dual-imaging, it is verified that DCF-P could well achieve tumor-preferential accumulation and retention at 4 h postinjection, and meanwhile shows highly efficient in vivo tumor elimination with good biosafety. This study thus contributes a novel concept for designing ultrasmall nanoparticle characteristics of preferential accumulation in tumors, and also provides a strategy for creating high-performance carrier-free nanomedicine via highly ordered molecular stacking.
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Affiliation(s)
- Rijie Zheng
- Laboratory for NanoMedical Photonics, School of Basic Medical Science, Henan University, Kaifeng, 475004, China
| | - Qi Zhao
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P. R. China
| | - Weixia Qing
- Laboratory for NanoMedical Photonics, School of Basic Medical Science, Henan University, Kaifeng, 475004, China
| | - Shengliang Li
- College of Pharmaceutical Sciences, Soochow University, Suzhou, 215123, P. R. China
| | - Zhonghua Liu
- Laboratory for NanoMedical Photonics, School of Basic Medical Science, Henan University, Kaifeng, 475004, China
| | - Qianqian Li
- Laboratory for NanoMedical Photonics, School of Basic Medical Science, Henan University, Kaifeng, 475004, China
| | - Yongwei Huang
- Laboratory for NanoMedical Photonics, School of Basic Medical Science, Henan University, Kaifeng, 475004, China
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13
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Chang M, Wei Y, Liu D, Wang JX, Chen JF. A General Strategy for Instantaneous and Continuous Synthesis of Ultrasmall Metal-Organic Framework Nanoparticles. Angew Chem Int Ed Engl 2021; 60:26390-26396. [PMID: 34590398 DOI: 10.1002/anie.202112250] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 09/09/2021] [Indexed: 11/10/2022]
Abstract
Ultrasmall metal-organic frameworks (MOFs) may generate unique properties to expand the scope of applications. However, the synthesis is still a great challenge. Herein, we propose a strategy to synthesize ultrasmall MOFs by high gravity technology. With the aid of tremendous intensification of molecular mixing and mass transfer in high-gravity field, six typical MOFs were obtained instantaneously in a continuous way. These samples are monodispersed with sub-5 nm in size, smaller than the previously reported values and even close to the length of one crystal unit cell. As a proof-of-concept, catalytic activity for Knoevenagel reaction can be significantly enhanced using ultrasmall ZIF-8. Conversion time of benzaldehyde was decreased by 94 % or 75 % compared to those using conventional or hierarchically porous ZIF-8. More importantly, this approach is readily scalable with the highest space-time yield for nano-MOFs, which may promote the convenient synthesis and practical applications of ultrasmall MOFs in large-scale.
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Affiliation(s)
- Miao Chang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.,Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yan Wei
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.,Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Dahuan Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jie-Xin Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.,Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Jian-Feng Chen
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China.,Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
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14
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Doan-Nguyen TP, Jiang S, Koynov K, Landfester K, Crespy D. Ultrasmall Nanocapsules Obtained by Controlling Ostwald Ripening. Angew Chem Int Ed Engl 2021; 60:18094-18102. [PMID: 34056797 DOI: 10.1002/anie.202103444] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/28/2021] [Indexed: 11/10/2022]
Abstract
We describe here a method to synthesize ultrasmall nanocapsules with a diameter of 6 nm, exhibiting a well-defined core-shell morphology. Remarkably, the nanocapules are synthesized in a miniemulsion process without the need of large amounts of surfactant as commonly used in the microemulsion process. Ultrasmall nanocapsules with an oil core and a silica shell are formed by the concurrent processes of a sol-gel reaction and Ostwald ripening. Using solvents with different water solubilities and alkoxysilanes with different reactivities, we demonstrate that sizes of obtained nanocapsules depend on the ripening rate and alkoxysilane conversion rate. The method can be also used for encapsulating natural oils such as peppermint oil and limonene. This work shows that the Ostwald ripening phenomenon can be employed beneficially for the preparation of very small colloids.
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Affiliation(s)
- Thao P Doan-Nguyen
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
| | - Shuai Jiang
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand.,Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Kaloian Koynov
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | | | - Daniel Crespy
- Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand.,Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong, 21210, Thailand
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15
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Han S, Zal T, Sokolov KV. Fate of Antibody-Targeted Ultrasmall Gold Nanoparticles in Cancer Cells after Receptor-Mediated Uptake. ACS Nano 2021; 15:9495-9508. [PMID: 34011152 PMCID: PMC8223898 DOI: 10.1021/acsnano.0c08128] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 05/12/2021] [Indexed: 06/12/2023]
Abstract
Nanoparticles with ultrasmall sizes (less than 10 nm) offer many advantages in biomedical applications compared to their bigger counterparts, including better intratumoral distribution, improved pharmacokinetics (PK), and efficient body clearance. When functionalized with a biocompatible coating and a target-specific antibody, ultrasmall nanoparticles represent an attractive clinical translation platform. Although there is a tremendous body of work dedicated to PK and the biological effects of various nanoparticles, little is known about the fate of different components of functionalized nanoparticles in a biological environment such as in live cells. Here, we used luminescence properties of 5 nm gold nanoparticles (AuNPs) to study the intracellular trafficking and fate of the AuNPs functionalized with an organic layer consisting of a polyethylene glycol (PEG) coating and epidermal growth factor receptor (EGFR)-targeting antibody. We showed that intracellular uptake of the targeted 5 nm AuNPs results in a strong two-photon luminescence (TPL) that is characterized by broad emission and very short lifetimes compared to the fluorescence of the nanoparticle-conjugated fluorophore-tagged antibody, thereby allowing selective imaging of these components using TPL and two-photon excited fluorescence lifetime microscopy (2P-FLIM). Our results indicate that the nanoparticle's coating is detached from the particle's surface inside cells, leading to formation of nanoparticle clusters with a strong TPL. Furthermore, we observed an optically resolved spatial separation of the gold core and the antibody coating of the particles inside cells. We used data from two-photon microscopy, 2P-FLIM, electron microscopy, and in vitro assays to propose a model of interactions of functionalized 5 nm AuNPs with live cells.
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Affiliation(s)
- Sangheon Han
- Department of Bioengineering, Rice
University, 6100 Main Street, Houston, Texas 77005, United
States
- Department of Imaging Physics, The
University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard,
Houston, Texas 77030, United States
| | - Tomasz Zal
- Department of Leukemia, The University of
Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas
77030, United States
| | - Konstantin V. Sokolov
- Department of Bioengineering, Rice
University, 6100 Main Street, Houston, Texas 77005, United
States
- Department of Imaging Physics, The
University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard,
Houston, Texas 77030, United States
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16
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Zhu G, Azharuddin M, Islam R, Rahmoune H, Deb S, Kanji U, Das J, Osterrieth J, Aulakh P, Ibrahim-Hashi H, Manchanda R, Nilsson PH, Mollnes TE, Bhattacharyya M, Islam MM, Hinkula J, Slater NKH, Patra HK. Innate Immune Invisible Ultrasmall Gold Nanoparticles-Framework for Synthesis and Evaluation. ACS Appl Mater Interfaces 2021; 13:23410-23422. [PMID: 33978409 PMCID: PMC8289183 DOI: 10.1021/acsami.1c02834] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Nanomedicine is seen as a potential central player in the delivery of personalized medicine. Biocompatibility issues of nanoparticles have largely been resolved over the past decade. Despite their tremendous progress, less than 1% of applied nanosystems can hit their intended target location, such as a solid tumor, and this remains an obstacle to their full ability and potential with a high translational value. Therefore, achieving immune-tolerable, blood-compatible, and biofriendly nanoparticles remains an unmet need. The translational success of nanoformulations from bench to bedside involves a thorough assessment of their design, compatibility beyond cytotoxicity such as immune toxicity, blood compatibility, and immune-mediated destruction/rejection/clearance profile. Here, we report a one-pot process-engineered synthesis of ultrasmall gold nanoparticles (uGNPs) suitable for better body and renal clearance delivery of their payloads. We have obtained uGNP sizes of as low as 3 nm and have engineered the synthesis to allow them to be accurately sized (almost nanometer by nanometer). The synthesized uGNPs are biocompatible and can easily be functionalized to carry drugs, peptides, antibodies, and other therapeutic molecules. We have performed in vitro cell viability assays, immunotoxicity assays, inflammatory cytokine analysis, a complement activation study, and blood coagulation studies with the uGNPs to confirm their safety. These can help to set up a long-term safety-benefit framework of experimentation to reveal whether any designed nanoparticles are immune-tolerable and can be used as payload carriers for next-generation vaccines, chemotherapeutic drugs, and theranostic agents with better body clearance ability and deep tissue penetration.
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Affiliation(s)
- Geyunjian
Harry Zhu
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Mohammad Azharuddin
- Department
of Biomedical and Clinical Sciences (BKV), Linkoping University, Linkoping 581 83, Sweden
| | - Rakibul Islam
- Department
of Immunology, Oslo University Hospital, University of Oslo, Oslo 0372, Norway
| | - Hassan Rahmoune
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Suryyani Deb
- Department
of Biotechnology, Maulana Abul Kalam Azad
University of Technology (MAKAUT), Kolkata 700064, India
| | - Upasona Kanji
- Department
of Biotechnology, Maulana Abul Kalam Azad
University of Technology (MAKAUT), Kolkata 700064, India
| | - Jyotirmoy Das
- Department
of Biomedical and Clinical Sciences (BKV), Linkoping University, Linkoping 581 83, Sweden
| | - Johannes Osterrieth
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Parminder Aulakh
- Institute
for Manufacturing (IfM), University of Cambridge, Cambridge CB3 0FS, U.K.
| | - Hashi Ibrahim-Hashi
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Raghav Manchanda
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Per H. Nilsson
- Department
of Immunology, Oslo University Hospital, University of Oslo, Oslo 0372, Norway
- Linnaeus
Center for Biomaterials Chemistry, Linnaeus
University, Kalmar 391 82, Sweden
| | - Tom Eirik Mollnes
- Department
of Immunology, Oslo University Hospital, University of Oslo, Oslo 0372, Norway
- Research
Laboratory, Nordland Hospital, Bodø, and Faculty of Health Sciences,
K.G. Jebsen TREC, University of Tromsø, Tromsø 9037, Norway
| | - Maitreyee Bhattacharyya
- Institute
of Haematology and Transfusion Medicine, Calcutta Medical College, Calcutta 700073, India
| | - Mohammad M. Islam
- Massachusetts
Eye and Ear and Schepens Eye Research Institute, Dept of Ophthalmology, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Jorma Hinkula
- Department
of Biomedical and Clinical Sciences (BKV), Linkoping University, Linkoping 581 83, Sweden
| | - Nigel K. H. Slater
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Hirak K. Patra
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
- Department
of Surgical Biotechnology, University College
London (UCL), London NW3 2PF, U.K.
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17
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Tezuka K, Umezawa M, Liu TI, Nomura K, Okubo K, Chiu HC, Kamimura M, Soga K. Upconversion Luminescent Nanostructure with Ultrasmall Ceramic Nanoparticles Coupled with Rose Bengal for NIR-Induced Photodynamic Therapy. ACS Appl Bio Mater 2021; 4:4462-4469. [PMID: 35006858 DOI: 10.1021/acsabm.1c00213] [Citation(s) in RCA: 9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We designed a biodegradable hybrid nanostructure for near-infrared (NIR)-induced photodynamic therapy (PDT) using an ultrasmall upconversion (UC) phosphor (β-NaYF4:Yb3+, Er3+ nanoparticle: NPs) and a hydrocarbonized rose bengal (C18RB) dye, a hydrophobized rose bengal (RB) derivative. The UC-NPs were encapsulated along with C18RB in the hydrophobic core of the micelle composed of poly(ethylene glycol) (PEG)-block-poly(ε-caprolactone) (PCL). The UC-NPs were well shielded from the aqueous environment, owing to the encapsulation in the hydrophobic PCL core, to efficiently emit green UC luminescence by avoiding the quenching by the hydroxyl groups. The hydrophobic part of C18 of C18RB worked well to be involved in the PCL core and located RB on the surface of the PCL core, making the efficient absorption of green light and the emission of singlet oxygen to surrounding water possible. Moreover, as the location is covered by PEG, the direct contact of RB to cells is prohibited to avoid their irradiation-free toxic effect on the cells. The hybrid nanostructure proved to be degradable by the hydrolysis of PEG-b-PCL. This degradation potentially results in renal excretion by the decomposition of the nanostructure into sub-10 nm size particles and makes them viable for clinical uses. These nanostructures can potentially be used for PDT of cancer in deep tissues.
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Affiliation(s)
- Keiko Tezuka
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Masakazu Umezawa
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Te-I Liu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Koki Nomura
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Kyohei Okubo
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Masao Kamimura
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
| | - Kohei Soga
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo 125-8585, Japan
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18
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Liu H, Deng Z, Wang M, Chen H, Zhang L, Zhang Y, Zhan R, Xu M, Bao SJ. Novel CdFe Bimetallic Complex-Derived Ultrasmall Fe- and N-Codoped Carbon as a Highly Efficient Oxygen Reduction Catalyst. ACS Appl Mater Interfaces 2019; 11:21481-21488. [PMID: 31120730 DOI: 10.1021/acsami.9b03518] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
During the development of oxygen reduction reaction electrocatalysts, transition-metal nanoparticles embedded in N-doped graphene have attracted increasing attention owing to their low-priced, minimal environmental impact, and satisfying performance. In this study, a new organic-cadmium (Cd) complex formed through Cd2+ coordination with p-phenylenediamine (PPD) was used to synthesize highly active Fe-embedded N-doped carbon catalysts for the first time. It is significant that with the decreasing molar ratio of Cd/Fe, an obvious microstructure evolution was observed in Cd-Fe-PPD from diamond-like blocks to thick flakes, and further bloomed into flowerlike shapes with ultrathin petals and then eventually exhibited large block starfish-like shapes. After carbonization, Cd was removed, slack and porous N-doped carbon was formed, and Fe was assembled in the N-doped carbon. Similar phenomenon was also observed in Co-PPD. The optimized Fe/NPC-2 material featuring uniform and well-dispersed 3-5 nm Fe nanoparticles embedded in two-dimensional ultrathin carbon nanosheets delivered excellent electrocatalytic performance ( Eonset: 0.96 V vs reversible hydrogen electrode (RHE), E1/2: 0.84 V vs RHE), which is very close to those of commercial platinum on carbon (Pt/C) ( Eonset: 0.95 V vs RHE, E1/2: 0.84 V vs RHE), and its methanol tolerance and durability also surpass those of Pt/C.
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Affiliation(s)
- Heng Liu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Zhiqin Deng
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Minqiang Wang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Hao Chen
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Longcheng Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Youquan Zhang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Renming Zhan
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Maowen Xu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
| | - Shu-Juan Bao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute for Clean Energy and Advanced Materials, Faculty of Materials and Energy , Southwest University , Chongqing 400715 , P. R. China
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19
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Kuruvilla J, Bayat N, Cristobal S. Proteomic Analysis of Endothelial Cells Exposed to Ultrasmall Nanoparticles Reveals Disruption in Paracellular and Transcellular Transport. Proteomics 2019; 19:e1800228. [PMID: 30632670 DOI: 10.1002/pmic.201800228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 05/30/2018] [Revised: 11/12/2018] [Indexed: 11/10/2022]
Abstract
The large interactive surfaces of nanoparticles (NPs) increase the opportunities to develop NPs for vascular targeting. Proteomic analysis of endothelial cells exposed to NPs reveals the cellular response and turns the focus into the impairment of the endothelial permeability. Here, quantitative proteomics and transcriptome sequencing are combined to evaluate the effects of exposure to sub-lethal concentrations of TiO2 -USNPs and TiO2 -NPs on human dermal microvascular endothelial cells. Endothelial cells react to preserve the semi-permeable properties that are essential for vascular tissue fluid homeostasis, vascular development, and angiogenesis. The main impact of the exposure was alteration of functional complexes involved in cell adhesion, vesicular transport, and cytoskeletal structure. Those are the core cellular structures that are linked to the permeability and the integrity of the endothelial tissue. Moreover, the extracellular proteins uptake along wih the NPs into the endothelial cells escape the lysosomal degradation pathway. These findings improve the understanding of the interaction of NPs with endothelial cell. The effects of the studied NPs modulating cell-cell adhesion and vesicular transport can help to evaluate the distribution of NPs via intravenous administration.
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Affiliation(s)
- Jacob Kuruvilla
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, SE-58185, Sweden
| | - Narges Bayat
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, SE-10691, Sweden
| | - Susana Cristobal
- Department of Clinical and Experimental Medicine, Cell Biology, Faculty of Medicine, Linköping University, Linköping, SE-58185, Sweden.,IKERBASQUE, Basque Foundation for Science, Departments of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, ES-48490, Spain
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20
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Piché D, Tavernaro I, Fleddermann J, Lozano JG, Varambhia A, Maguire ML, Koch M, Ukai T, Hernández Rodríguez AJ, Jones L, Dillon F, Reyes Molina I, Mitzutani M, González Dalmau ER, Maekawa T, Nellist PD, Kraegeloh A, Grobert N. Targeted T 1 Magnetic Resonance Imaging Contrast Enhancement with Extraordinarily Small CoFe 2O 4 Nanoparticles. ACS Appl Mater Interfaces 2019; 11:6724-6740. [PMID: 30688055 PMCID: PMC6385080 DOI: 10.1021/acsami.8b17162] [Citation(s) in RCA: 15] [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] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
Extraordinarily small (2.4 nm) cobalt ferrite nanoparticles (ESCIoNs) were synthesized by a one-pot thermal decomposition approach to study their potential as magnetic resonance imaging (MRI) contrast agents. Fine size control was achieved using oleylamine alone, and annular dark-field scanning transmission electron microscopy revealed highly crystalline cubic spinel particles with atomic resolution. Ligand exchange with dimercaptosuccinic acid rendered the particles stable in physiological conditions with a hydrodynamic diameter of 12 nm. The particles displayed superparamagnetic properties and a low r2/ r1 ratio suitable for a T1 contrast agent. The particles were functionalized with bile acid, which improved biocompatibility by significant reduction of reactive oxygen species generation and is a first step toward liver-targeted T1 MRI. Our study demonstrates the potential of ESCIoNs as T1 MRI contrast agents.
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Affiliation(s)
- Dominique Piché
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
| | - Isabella Tavernaro
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Jana Fleddermann
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Juan G. Lozano
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
| | - Aakash Varambhia
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
| | - Mahon L. Maguire
- British
Heart Foundation Experimental Magnetic Resonance Unit, Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, England
| | - Marcus Koch
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Tomofumi Ukai
- Bio-Nano
Electronics Research Centre, Toyo University, 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Armando J. Hernández Rodríguez
- Departamento
de Imágenes por Resonancia Magnética, Cuban Neurosciences Center, Street 190 e/25 and 27, Cubanacan
Playa, Havana CP 11600, Cuba
| | - Lewys Jones
- Advanced
Microscopy Laboratory, Centre for Research
on Adaptive Nanostructures and Nanodevices (CRANN), Dublin 2, Ireland
- School of
Physics, Trinity College Dublin, Dublin 2, Ireland
| | - Frank Dillon
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
| | - Israel Reyes Molina
- Departamento
de Imágenes por Resonancia Magnética, Cuban Neurosciences Center, Street 190 e/25 and 27, Cubanacan
Playa, Havana CP 11600, Cuba
| | - Mai Mitzutani
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
- Department
of Material Science and Engineering, Tokyo
Institute of Technology, S8-25, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Evelio R. González Dalmau
- Departamento
de Imágenes por Resonancia Magnética, Cuban Neurosciences Center, Street 190 e/25 and 27, Cubanacan
Playa, Havana CP 11600, Cuba
| | - Toru Maekawa
- Bio-Nano
Electronics Research Centre, Toyo University, 2100, Kujirai, Kawagoe, Saitama 350-8585, Japan
| | - Peter D. Nellist
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
| | - Annette Kraegeloh
- INM
- Leibniz Institute for New Materials, Campus D2 2, 66123 Saarbrücken, Germany
| | - Nicole Grobert
- Materials
Department, University of Oxford, Parks Road, Oxford OX1 3PH, England
- Williams Advanced Engineering, Grove, Oxfordshire, OX12
0DQ, England
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21
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Germano LD, Marangoni VS, Mogili NVV, Seixas L, Maroneze CM. Ultrasmall (<2 nm) Au@Pt Nanostructures: Tuning the Surface Electronic States for Electrocatalysis. ACS Appl Mater Interfaces 2019; 11:5661-5667. [PMID: 30694046 DOI: 10.1021/acsami.8b12712] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The ability to tune the electronic properties of nanomaterials has played a major role in the development of sustainable energy technologies. Metallic nanocatalysts are at the forefront of these advances. Their unique properties become even more interesting when we can control the distribution of the electronic states in the nanostructure. Here, we provide a comprehensive evaluation of the electronic surface states in ultrasmall metallic nanostructures by combining experimental and theoretical methods. The developed strategy allows the controlled synthesis of bimetallic nanostructures in the core-shell configuration, dispensing of the use of any surfactant or stabilizing agents, which usually inactivate important surface phenomena. The synthesized ultrasmall Au@Pt nanoarchitecture (∼1.8 nm) presents an enhanced performance catalyzing the hydrogen evolution reaction. First-principles calculations of projected and space-resolved local density of states of Au55@Pt92 (core-shell), Au55Pt92 (alloy), and Pt147 nanoparticles show a prominent increase in the surface electronic states for the core-shell bimetallic nanomaterial. It arises from a more-effective charge transfer from gold to the surface platinum atoms in the core-shell configuration. In pure Pt147 or Au55Pt92 alloy nanoparticles, a great part of the electronic states near the Fermi level is buried in the core atoms, disabling these states for catalytic applications. The proposed experimental-theoretical approach may be useful for the design of other systems composed of metallic nanoparticles supported on distinct substrates, such as two-dimensional materials and porous matrices. These nanomaterials find several applications not only in heterogeneous catalysis but also in sensing and optoelectronic devices.
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Affiliation(s)
- Lucas D Germano
- MackGraphe - Graphene and Nanomaterials Research Center , Mackenzie Presbyterian University , Rua da Consolação 896 , São Paulo , 01302-907 , SP, Brazil
| | - Valeria S Marangoni
- MackGraphe - Graphene and Nanomaterials Research Center , Mackenzie Presbyterian University , Rua da Consolação 896 , São Paulo , 01302-907 , SP, Brazil
| | | | - Leandro Seixas
- MackGraphe - Graphene and Nanomaterials Research Center , Mackenzie Presbyterian University , Rua da Consolação 896 , São Paulo , 01302-907 , SP, Brazil
| | - Camila M Maroneze
- MackGraphe - Graphene and Nanomaterials Research Center , Mackenzie Presbyterian University , Rua da Consolação 896 , São Paulo , 01302-907 , SP, Brazil
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22
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Zhang Y, Wang X, Hu D, Xue C, Wang W, Yang H, Li D, Wu T. Monodisperse Ultrasmall Manganese-Doped Multimetallic Oxysulfide Nanoparticles as Highly Efficient Oxygen Reduction Electrocatalyst. ACS Appl Mater Interfaces 2018; 10:13413-13424. [PMID: 29613757 DOI: 10.1021/acsami.7b19498] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The highly efficient and cheap non-Pt-based electrocatalysts such as transition-based catalysts prepared via facile methods for oxygen reduction reaction (ORR) are desirable for large-scale practical industry applications in energy conversion and storage systems. Herein, we report a straightforward top-down synthesis of monodisperse ultrasmall manganese-doped multimetallic (ZnGe) oxysulfide nanoparticles (NPs) as an efficient ORR electrocatalyst by simple ultrasonic treatment of the Mn-doped Zn-Ge-S chalcogenidometalate crystal precursors in H2O/EtOH for only 1 h at room temperature. Thus obtained ultrasmall monodisperse Mn-doped oxysulfide NPs with ultralow Mn loading level (3.92 wt %) not only exhibit comparable onset and half-wave potential (0.92 and 0.86 V vs reversible hydrogen electrode, respectively) to the commercial 20 wt % Pt/C but also exceptionally high metal mass activity (189 mA/mg at 0.8 V) and good methanol tolerance. A combination of transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and electrochemical analysis demonstrated that the homogenous distribution of a large amount of Mn(III) on the surface of NPs mainly accounts for the high ORR activity. We believe that this simple synthesis of Mn-doped multimetallic (ZnGe) oxysulfide NPs derived from chalcogenidometalates will open a new route to explore the utilization of discrete-cluster-based chalcogenidometalates as novel non-Pt electrocatalysts for energy applications and provide a facile way to realize the effective reduction of the amount of catalyst while keeping desired catalytic performances.
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Affiliation(s)
- Yingying Zhang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Xiang Wang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Dandan Hu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Chaozhuang Xue
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Wei Wang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Huajun Yang
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
| | - Dongsheng Li
- College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials , China Three Gorges University , Yichang , Hubei 443002 , China
| | - Tao Wu
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou , Jiangsu 215123 , China
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23
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Lira AL, Ferreira RS, Torquato RJS, Zhao H, Oliva MLV, Hassan SA, Schuck P, Sousa AA. Binding kinetics of ultrasmall gold nanoparticles with proteins. Nanoscale 2018; 10:3235-3244. [PMID: 29383361 PMCID: PMC5842697 DOI: 10.1039/c7nr06810g] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 05/20/2023]
Abstract
Synthetic ultrasmall nanoparticles (NPs) can be designed to interact with biologically active proteins in a controlled manner. However, the rational design of NPs requires a clear understanding of their interactions with proteins and the precise molecular mechanisms that lead to association/dissociation in biological media. Although much effort has been devoted to the study of the kinetics mechanism of protein corona formation on large NPs, the nature of NP-protein interactions in the ultrasmall regime is radically different and poorly understood. Using a combination of experimental and computational approaches, we studied the interactions of a model protein, CrataBL, with ultrasmall gold NPs passivated with p-mercaptobenzoic acid (AuMBA) and glutathione (AuGSH). We have identified this system as an ideal in vitro platform to understand the dependence of binding affinity and kinetics on NP surface chemistry. We found that the structural and chemical complexity of the passivating NP layer leads to quite different association kinetics, from slow and reaction-limited (AuGSH) to fast and diffusion-limited (AuMBA). We also found that the otherwise weak and slow AuGSH-protein interactions measured in buffer solution are enhanced in macromolecular crowded solutions. These findings advance our mechanistic understanding of biomimetic NP-protein interactions in the ultrasmall regime and have implications for the design and use of NPs in the crowded conditions common to all biological media.
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Affiliation(s)
- André L Lira
- Department of Biochemistry, Federal University of São Paulo, São Paulo, SP, Brazil.
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24
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Zhao F, Shen S, Cheng L, Ma L, Zhou J, Ye H, Han N, Wu T, Li Y, Lu J. Improved Sodium-Ion Storage Performance of Ultrasmall Iron Selenide Nanoparticles. Nano Lett 2017. [PMID: 28628326 DOI: 10.1021/acs.nanolett.7b00915] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Sodium-ion batteries are potential low-cost alternatives to current lithium-ion technology, yet their performances still fall short of expectation due to the lack of suitable electrode materials with large capacity, long-term cycling stability, and high-rate performance. In this work, we demonstrated that ultrasmall (∼5 nm) iron selenide (FeSe2) nanoparticles exhibited a remarkable activity for sodium-ion storage. They were prepared from a high-temperature solution method with a narrow size distribution and high yield and could be readily redispersed in nonpolar organic solvents. In ether-based electrolyte, FeSe2 nanoparticles exhibited a large specific capacity of ∼500 mAh/g (close to the theoretical limit), high rate capability with ∼250 mAh/g retained at 10 A/g, and excellent cycling stability at both low and high current rates by virtue of their advantageous nanosizing effect. Full sodium-ion batteries were also constructed from coupling FeSe2 with NASICON-type Na3V2(PO4)3 cathode and demonstrated impressive capacity and cycle ability.
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Affiliation(s)
- Feipeng Zhao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Sida Shen
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Liang Cheng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Lu Ma
- Advanced Photon Sources, X-ray Science Division, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - Junhua Zhou
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Hualin Ye
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Na Han
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Tianpin Wu
- Advanced Photon Sources, X-ray Science Division, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - Yanguang Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University , Suzhou 215123, China
| | - Jun Lu
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Lemont, Illinois 60439, United States
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25
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Abstract
Nanoparticle (NP) aggregation can lead to prolonged retention in tissues or embolism, among other adverse effects. Successful use in biomedicine thus requires the capability to make NPs with limited aggregative potential. Rational design is presently a challenge due to incomplete knowledge of their interactions in biofluids. Recently, ultrasmall gold NPs passivated with endogenous antioxidant glutathione have shown promise for use in vivo. Computer simulations are here conducted to identify the forces underlying aggregation (or lack thereof) of these NPs in a cell culture. Electrostatic interactions are insufficient to induce association, but the van der Waals forces exerted by cations, anions, and net-neutral polar species can promote the formation of stable dimers. The entropic effects of depletion are negligible, but the combined effect of depletion and macromolecular crowding at physiological concentrations can stabilize aggregates containing just a few NPs. Interparticle interactions are controlled by modest changes in both the structure and dynamic of the interfacial liquid. The molecular origin of these effects and their dependence on NP size are described. The liquid is shown to be highly structured, with large and long-lived hydrogen-bonded water clusters developing often in the interparticle space; their potential role as transient, long-range proton wires connecting and enveloping neighboring NPs is discussed. The basis for a parsimonious theory of ultrasmall NPs in complex fluids is established.
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Affiliation(s)
- Sergio A. Hassan
- Center for Molecular Modeling, OIR/CIT, National Institutes of Health, U.S. DHHS, Bethesda, Maryland 20892, United States
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26
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Pike SD, White ER, Regoutz A, Sammy N, Payne DJ, Williams CK, Shaffer MSP. Reversible Redox Cycling of Well-Defined, Ultrasmall Cu/Cu 2O Nanoparticles. ACS Nano 2017; 11:2714-2723. [PMID: 28286946 DOI: 10.1021/acsnano.6b07694] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [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
Exceptionally small and well-defined copper (Cu) and cuprite (Cu2O) nanoparticles (NPs) are synthesized by the reaction of mesitylcopper(I) with either H2 or air, respectively. In the presence of substoichiometric quantities of ligands, namely, stearic or di(octyl)phosphinic acid (0.1-0.2 equiv vs Cu), ultrasmall nanoparticles are prepared with diameters as low as ∼2 nm, soluble in a range of solvents. The solutions of Cu NPs undergo quantitative oxidation, on exposure to air, to form Cu2O NPs. The Cu2O NPs can be reduced back to Cu(0) NPs using accessible temperatures and low pressures of hydrogen (135 °C, 3 bar H2). This striking reversible redox cycling of the discrete, solubilized Cu/Cu(I) colloids was successfully repeated over 10 cycles, representing 19 separate reactions. The ligands influence the evolution of both composition and size of the nanoparticles, during synthesis and redox cycling, as explored in detail using vacuum-transfer aberration-corrected transmission electron microscopy, X-ray photoelectron spectroscopy, and visible spectroscopy.
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Affiliation(s)
- Sebastian D Pike
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Edward R White
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Anna Regoutz
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Nicholas Sammy
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - David J Payne
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
| | - Charlotte K Williams
- Department of Chemistry, Oxford University, Chemistry Research Laboratory , 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Milo S P Shaffer
- Department of Chemistry, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
- Department of Materials, Imperial College London , Imperial College Road, London SW7 2AZ, U.K
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27
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Ke WH, Hsia CF, Chen YJ, Huang MH. Synthesis of Ultrasmall Cu2 O Nanocubes and Octahedra with Tunable Sizes for Facet-Dependent Optical Property Examination. Small 2016; 12:3530-3534. [PMID: 27218827 DOI: 10.1002/smll.201600064] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/01/2016] [Indexed: 06/05/2023]
Abstract
Size-tunable small to ultrasmall Cu2 O nanocubes and octahedra are synthesized in aqueous solution without the introduction of any surfactant. These nanocrystals provide strong evidence of the existence of facet-dependent optical absorption properties of Cu2 O nanoparticles, showing nanocubes always have a more redshifted absorption band than that of octahedra having a similar volume by about 15 nm.
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Affiliation(s)
- Wei-Hong Ke
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Chi-Fu Hsia
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Ying-Jui Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Michael H Huang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
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28
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Kang D, Liu Q, Chen M, Gu J, Zhang D. Spontaneous Cross-linking for Fabrication of Nanohybrids Embedded with Size-Controllable Particles. ACS Nano 2016; 10:889-898. [PMID: 26650902 DOI: 10.1021/acsnano.5b06022] [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: 06/05/2023]
Abstract
This paper reports a versatile method to fabricate robust carbon/metal hybrids with ultrasmall particle and highly developed porous structure through a scalable and facile way. Alginate is used as the precursor for it could perform cross-linking reaction with different polyvalent metal ions to form gels. After simple freeze-drying and carbonization of the alginate-derived gels, we obtained the carbon/metal hybrids with fine nanostructure. Eleven kinds of metal ions were introduced to form gels and five kinds of the gels were carbonized to produce the carbon/metal hybrids. By adjusting the reaction condition, we could tune the size of the nanoparticles in the obtained hybrids. The obtained SnO2/C hybrid shows outstanding specific capacity, rate performance, and long cycle life when it is used as the anode materials of lithium ion batteries. The ultrasmall active nanoparticles were uniformly dispersed within an interconnected pore framework. It ensured a short diffusion and transportation distance of electrolyte ions to the surfaces of active nanoparticles. In addition, the robust carbon framework comprises of quasigraphitic carbon layers. It contributed to the high rate performance by providing excellent conductive pathways for electrons within the electrodes. This work provides a general method for fabrication of carbon/metal (oxide) hybrids with fine nanostructure for application in energy storage.
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Affiliation(s)
- Danmiao Kang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Qinglei Liu
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Min Chen
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Jiajun Gu
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
| | - Di Zhang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, P. R. China
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29
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Liang X, Wang H, Zhu Y, Zhang R, Cogger VC, Liu X, Xu ZP, Grice JE, Roberts MS. Short- and Long-Term Tracking of Anionic Ultrasmall Nanoparticles in Kidney. ACS Nano 2016; 10:387-395. [PMID: 26743581 DOI: 10.1021/acsnano.5b05066] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [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: 06/05/2023]
Abstract
While biodistribution of nanoparticles (NPs) has been widely studied at the organ level, relatively little is known about their disposition in organs at the cellular level, especially after long-term exposure. The kidney is regarded as the key organ for the clearance of ultrasmall NPs (<5.5 nm). However, recent studies indicate that NPs in this size range could accumulate in the kidney for extended times without urinary excretion. Using negatively charged quantum dots (QDs) (∼3.7 nm) as a model system, we examined the suborgan disposition of anionic ultrasmall NPs in the kidney at the cellular level after intravenous injection by multiphoton microscopy coupled with fluorescence lifetime imaging. Most of the NPs were initially distributed in the peritubular capillaries or glomerular arterioles after injection, whereas they passed through the fenestrated glomerular endothelium and were gradually taken up by mesangial cells up to 30 days after injection. Only trace amounts of anionic QDs could be detected in the urine, which could be attributed to the barrier of the anionic glomerular basement membrane preventing filtration of anionic QDs. In contrast, cationic QDs of similar size (∼5.67 nm) were found to be readily excreted into urine. This study thus highlights the importance of surface charge in determining renal clearance of ultrasmall NPs. It provides a framework for characterizing and predicting the subcellular disposition in organs and long-term targeting of other NPs, with a physiologically based kinetic model being subsequently developed to describe the suborgan kinetics of anionic ultrasmall NPs.
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Affiliation(s)
- Xiaowen Liang
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
| | - Haolu Wang
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
| | - Yian Zhu
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
| | - Run Zhang
- Department of Chemistry and Biomolecular Sciences, Faculty of Science and Engineering, Macquarie University , Sydney, NSW 2109, Australia
| | - Victoria C Cogger
- Centre for Education and Research on Ageing and the ANZAC Research Institute, The University of Sydney , Concord Hospital, Concord, NSW 2139, Australia
| | - Xin Liu
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St. Lucia, QLD 4072, Australia
| | - Jeffrey E Grice
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
| | - Michael S Roberts
- Therapeutics Research Centre, School of Medicine, The University of Queensland , Princess Alexandra Hospital, Woolloongabba, QLD 4102, Australia
- School of Pharmacy and Medical Science, University of South Australia , Adelaide, SA 5001, Australia
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30
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Ji W, Qi W, Tang S, Peng H, Li S. Hydrothermal Synthesis of Ultrasmall Pt Nanoparticles as Highly Active Electrocatalysts for Methanol Oxidation. Nanomaterials (Basel) 2015; 5:2203-2211. [PMID: 28347116 PMCID: PMC5304777 DOI: 10.3390/nano5042203] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 11/20/2015] [Accepted: 11/25/2015] [Indexed: 11/16/2022]
Abstract
Ultrasmall nanoparticles, with sizes in the 1–3 nm range, exhibit unique properties distinct from those of free molecules and larger-sized nanoparticles. Demonstrating that the hydrothermal method can serve as a facile method for the synthesis of platinum nanoparticles, we successfully synthesized ultrasmall Pt nanoparticles with an average size of 2.45 nm, with the aid of poly(vinyl pyrrolidone) (PVP) as reducing agents and capping agents. Because of the size effect, these ultrasmall Pt nanoparticles exhibit a high activity toward the methanol oxidation reaction.
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Affiliation(s)
- Wenhai Ji
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
| | - Weihong Qi
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
- Institute for Materials Microstructure, Central South University, Changsha 410083, China.
- Key Laboratory of Non-Ferrous Materials Science and Engineering, Ministry of Education, Changsha 410083, China.
| | - Shasha Tang
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
| | - Hongcheng Peng
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
| | - Siqi Li
- School of Materials Science and Engineering, Central South University, Changsha 410083, China.
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Wang X, Meng JQ, Wang M, Xiao Y, Liu R, Xia Y, Yao Y, Metwalli E, Zhang Q, Qiu B, Liu Z, Pan J, Sun LD, Yan CH, Müller-Buschbaum P, Cheng YJ. Facile Scalable Synthesis of TiO2/Carbon Nanohybrids with Ultrasmall TiO2 Nanoparticles Homogeneously Embedded in Carbon Matrix. ACS Appl Mater Interfaces 2015; 7:24247-24255. [PMID: 26465800 DOI: 10.1021/acsami.5b07784] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A facile scalable synthesis of TiO2/C nanohybrids inspired by polymeric dental restorative materials has been developed, which creates ultrasmall TiO2 nanoparticles homogeneously embedded in the carbon matrix. The average size of the nanoparticles is tuned between about 1 and 5 nm with the carbon content systematically increased from 0% to 65%. Imaging analysis and a scattering technique have been applied to investigate the morphology of the TiO2 nanoparticles. The composition, nature of carbon matrix, crystallinity, and tap density of the TiO2/C nanohybrids have been studied. The application of the TiO2/C nanohybrids as lithium-ion battery anode is demonstrated. Unusual discharge/charge profiles have been exhibited, where characteristic discharge/charge plateaus of crystalline TiO2 are significantly diminished. The tap density, cyclic capacities, and rate performance at high current densities (10 C, 20 C) of the TiO2/C nanohybrid anodes have been effectively improved compared to the bare carbon anode and the TiO2/C nanohybrids with larger particle size.
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Affiliation(s)
- Xiaoyan Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University , Tianjin 300387, P. R. China
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Jian-Qiang Meng
- State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University , Tianjin 300387, P. R. China
| | - Meimei Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
- Faculty of Materials Science and Chemical Engineering, Ningbo University , Ningbo, Zhejiang Province 315211, P. R. China
| | - Ying Xiao
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Rui Liu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, P. R. China
| | - Yonggao Xia
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Yuan Yao
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München , James-Franck-Str. 1, 85748 Garching, Germany
| | - Ezzeldin Metwalli
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München , James-Franck-Str. 1, 85748 Garching, Germany
| | - Qian Zhang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Bao Qiu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Zhaoping Liu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
| | - Jing Pan
- Faculty of Materials Science and Chemical Engineering, Ningbo University , Ningbo, Zhejiang Province 315211, P. R. China
| | - Ling-Dong Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, P. R. China
| | - Chun-Hua Yan
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications & PKU-HKU Joint Lab on Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, P. R. China
| | - Peter Müller-Buschbaum
- Physik-Department, Lehrstuhl für Funktionelle Materialien, Technische Universität München , James-Franck-Str. 1, 85748 Garching, Germany
| | - Ya-Jun Cheng
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences , 1219 Zhongguan West Rd., Zhenhai District, Ningbo, Zhejiang Province 315201, P. R. China
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Li Z, Wang SX, Sun Q, Zhao HL, Lei H, Lan MB, Cheng ZX, Wang XL, Dou SX, Max Lu GQ. Ultrasmall manganese ferrite nanoparticles as positive contrast agent for magnetic resonance imaging. Adv Healthc Mater 2013; 2:958-64. [PMID: 23322490 DOI: 10.1002/adhm.201200340] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Indexed: 12/21/2022]
Affiliation(s)
- Zhen Li
- Institute of Superconducting & Electronic Materials, The University of Wollongong, Australia.
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