1
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Mehla N, Mukhopadhyaya A, Ali S, Ali ME. Orchestration of ferro- and anti-ferromagnetic ordering in gold nanoclusters. NANOSCALE 2024. [PMID: 38920340 DOI: 10.1039/d4nr00856a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
The unpaired electron in the gold clusters (Aun, n = no. of Au atoms) with an odd number of total electrons is solely responsible for the magnetic properties in the small-sized Au nano-clusters. However, no such unpaired electron is available due to pairing in the even number of atom gold clusters and behaving as a diamagnetic entity similar to bulk gold. In this work, we unveiled the spin-density distribution of odd Aun clusters with n = 1 to 19 that reveals that a single unpaired electron gets distributed non-uniformly among all Au-atoms depending on the cluster size and morphology. The delocalization of the unpaired electron leads to the spin dilution approaching a value of ∼1/n spin moments on each atom for the higher clusters. Interestingly, small odd-numbered gold clusters possess spin-magnetic moments similar to the delocalized spin moments as of organic radicals. Can cooperative magnetic properties be obtained by coupling these individual magnetic gold nanoparticles? In this work, by applying state-of-the-art computational methodologies, we have demonstrated ferromagnetic or anti-ferromagnetic couplings between such magnetic nanoclusters upon designing suitable organic spacers. These findings will open up a new avenue of nanoscale magnetic materials combining organic spacers and odd-electron nano-clusters.
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Affiliation(s)
- Nisha Mehla
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India.
| | - Aritra Mukhopadhyaya
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India.
| | - Shahjad Ali
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India.
| | - Md Ehesan Ali
- Institute of Nano Science and Technology, Sector-81, Mohali, Punjab 140306, India.
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2
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Wang M, Tian F, Xin Q, Ma H, Liu L, Yang S, Sun S, Song N, Tan K, Li Z, Zhang L, Wang Q, Feng L, Wang H, Wang Z, Zhang XD. In Vivo Toxicology of Metabolizable Atomically Precise Au 25 Clusters at Ultrahigh Doses. Bioconjug Chem 2024; 35:540-550. [PMID: 38557019 DOI: 10.1021/acs.bioconjchem.4c00113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Ultrasmall Au25(MPA)18 clusters show great potential in biocatalysts and bioimaging due to their well-defined, tunable structure and properties. Hence, in vivo pharmacokinetics and toxicity of Au nanoclusters (Au NCs) are very important for clinical translation, especially at high dosages. Herein, the in vivo hematological, tissue, and neurological effects following exposure to Au NCs (300 and 500 mg kg-1) were investigated, in which the concentration is 10 times higher than in therapeutic use. The biochemical and hematological parameters of the injected Au NCs were within normal limits, even at the ultrahigh level of 500 mg kg-1. Meanwhile, no histopathological changes were observed in the Au NC group, and immunofluorescence staining showed no obvious lesions in the major organs. Furthermore, real-time near-infrared-II (NIR-II) imaging showed that most of the Au25(MPA)18 and Au24Zn1(MPA)18 can be metabolized via the kidney. The results demonstrated that Au NCs exhibit good biosafety by evaluating the manifestation of toxic effects on major organs at ultrahigh doses, providing reliable data for their application in biomedicine.
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Affiliation(s)
- Miaoyu Wang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Fangzhen Tian
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Qi Xin
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Huizhen Ma
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Ling Liu
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Shuyu Yang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Si Sun
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Nan Song
- Department of Physics, School of Science, Tianjin Chengjian University, Tianjin 300384, China
| | - KeXin Tan
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Zhenhua Li
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Lijie Zhang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Qi Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Liefeng Feng
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
| | - Hao Wang
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
| | - Zhidong Wang
- Department of Radiobiology, Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiao-Dong Zhang
- Department of Physics and Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Sciences, Tianjin University, Tianjin 300350, China
- Tianjin Key Laboratory of Brain Science and Neural Engineering, Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China
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3
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Rashid U, Bro-Jørgensen W, Harilal KB, Sreelakshmi PA, Mondal RR, Chittari Pisharam V, Parida KN, Geetharani K, Hamill JM, Kaliginedi V. Chemistry of the Au-Thiol Interface through the Lens of Single-Molecule Flicker Noise Measurements. J Am Chem Soc 2024; 146:9063-9073. [PMID: 38381861 PMCID: PMC10995995 DOI: 10.1021/jacs.3c14079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/23/2024]
Abstract
Chemistry of the Au-S interface at the nanoscale is one of the most complex systems to study, as the nature and strength of the Au-S bond change under different experimental conditions. In this study, using mechanically controlled break junction technique, we probed the conductance and analyzed Flicker noise for several aliphatic and aromatic thiol derivatives and thioethers. We demonstrate that Flicker noise can be used to unambiguously differentiate between stronger chemisorption (Au-SR) and weaker physisorption (Au-SRR') type interactions. The Flicker noise measurements indicate that the gold rearrangement in chemisorbed Au-SR junctions resembles that of the Au rearrangement in pure Au-Au metal contact breaking, which is independent of the molecular backbone structure and the resulting conductance. In contrast, thioethers showed the formation of a weaker physisorbed Au-SRR' type bond, and the Flicker noise measurement indicates the changes in the Au-anchoring group interface but not the Au-Au rearrangement like that in the Au-SR case. Additionally, by employing single-molecular conductance and Flicker noise analysis, we have probed the interfacial electric field-catalyzed ring-opening reaction of cyclic thioether under mild environmental conditions, which otherwise requires harsh chemical conditions for cleavage of the C-S bond. All of our conductance measurements are complemented by NEGF transport calculations. This study illustrates that the single-molecule conductance, together with the Flicker noise measurements can be used to tune and monitor chemical reactions at the single-molecule level.
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Affiliation(s)
- Umar Rashid
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - William Bro-Jørgensen
- Department
of Chemistry and Nano-Science Center, University
of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - KB Harilal
- School
of Chemistry, Indian Institute of Science
Education and Research (IISER), Thiruvananthapuram 695551, Kerala, India
| | - PA Sreelakshmi
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Reetu Rani Mondal
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Varun Chittari Pisharam
- School
of Chemistry, Indian Institute of Science
Education and Research (IISER), Thiruvananthapuram 695551, Kerala, India
| | - Keshaba N. Parida
- School
of Chemistry, Indian Institute of Science
Education and Research (IISER), Thiruvananthapuram 695551, Kerala, India
| | - K. Geetharani
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
| | - Joseph M. Hamill
- Department
of Chemistry and Nano-Science Center, University
of Copenhagen, Universitetsparken
5, DK-2100 Copenhagen
Ø, Denmark
| | - Veerabhadrarao Kaliginedi
- Department
of Inorganic and Physical Chemistry, Indian
Institute of Science, Bangalore 560012, India
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4
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Lee J, Jo H, Jeong C, Lee T, Ryu S, Yang Y. Single-Atom Level Determination of 3-Dimensional Surface/Interface Atomic Structures via Deep Learning-Assisted Atomic Electron Tomography. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1384. [PMID: 37613584 DOI: 10.1093/micmic/ozad067.712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Juhyeok Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Hyesung Jo
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Chaehwa Jeong
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Taegu Lee
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Seunghwa Ryu
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Yongsoo Yang
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
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5
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Asedegbega-Nieto E, Iglesias-Juez A, Di Michiel M, Fernandez-Garcia M, Rodriguez-Ramos I, Guerrero-Ruiz A. Dynamics of Pd Subsurface Hydride Formation and Their Impact on the Selectivity Control for Selective Butadiene Hydrogenation Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1099. [PMID: 36985993 PMCID: PMC10058484 DOI: 10.3390/nano13061099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/10/2023] [Accepted: 03/16/2023] [Indexed: 06/18/2023]
Abstract
Structure-sensitive catalyzed reactions can be influenced by a number of parameters. So far, it has been established that the formation of Pd-C species is responsible for the behavior of Pd nanoparticles employed as catalysts in a butadiene partial hydrogenation reaction. In this study, we introduce some experimental evidence indicating that subsurface Pd hydride species are governing the reactivity of this reaction. In particular, we detect that the extent of formation/decomposition of PdHx species is very sensitive to the Pd nanoparticle aggregate dimensions, and this finally controls the selectivity in this process. The main and direct methodology applied to determine this reaction mechanism step is time-resolved high-energy X-ray diffraction (HEXRD).
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Affiliation(s)
- Esther Asedegbega-Nieto
- Dpto. Química Inorgánica y Técnica, Facultad de Ciencias, UNED, Av. de Esparta s/n, 28232 Las Rozas, Madrid, Spain
| | - Ana Iglesias-Juez
- Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, Spain
| | - Marco Di Michiel
- ESRF—The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Marcos Fernandez-Garcia
- Instituto de Catálisis y Petroleoquímica, CSIC, c/Marie Curie No. 2, Cantoblanco, 28049 Madrid, Spain
| | | | - Antonio Guerrero-Ruiz
- Dpto. Química Inorgánica y Técnica, Facultad de Ciencias, UNED, Av. de Esparta s/n, 28232 Las Rozas, Madrid, Spain
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6
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Piliai L, Matvija P, Dinhová TN, Khalakhan I, Skála T, Doležal Z, Bezkrovnyi O, Kepinski L, Vorokhta M, Matolínová I. In Situ Spectroscopy and Microscopy Insights into the CO Oxidation Mechanism on Au/CeO 2(111). ACS APPLIED MATERIALS & INTERFACES 2022; 14:56280-56289. [PMID: 36484234 DOI: 10.1021/acsami.2c15792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this work, we prepared and investigated in ultra-high vacuum (UHV) two stoichiometric CeO2(111) surfaces containing low and high amounts of step edges decorated with 0.05 ML of gold using synchrotron-radiation photoelectron spectroscopy (SRPES) and scanning tunneling microscopy (STM). The UHV study helped to solve the still unresolved puzzle on how the one-monolayer-high ceria step edges affect the metal-substrate interaction between Au and the CeO2(111) surface. It was found that the concentration of ionic Au+ species on the ceria surface increases with increasing number of ceria step edges and is not correlated with the concentration of Ce3+ ions that are supposed to form on the surface after its interaction with gold nanoparticles. We associated this with an additional channel of Au+ formation on the surface of CeO2(111) related to the interaction of Au atoms with various peroxo oxygen species formed at the ceria step edges during the film growth. The study of CO oxidation on the highly stepped Au/CeO2(111) model sample was performed by combining near-ambient-pressure X-ray photoelectron spectroscopy (NAP-XPS), UHV-STM, and near-ambient-pressure STM (NAP-STM). This powerful combination provided comprehensive information on the processes occurring on the Au/CeO2(111) surface during the interaction with CO, O2, and CO + O2 (1:1) mixture at conditions close to the real working conditions of CO oxidation. It was found that the system demonstrates high stability in CO. However, the surface undergoes substantial chemical and morphological changes as the O2 is added to the reaction cell. Already at 300 K, gold nanoparticles begin to grow using a mechanism that involves the disintegration of small gold nanoparticles in favor of the large ones. With increasing temperature, the model catalyst quickly transforms into a system of primarily large Au particles that contains no ionic gold species.
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Affiliation(s)
- Lesia Piliai
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Peter Matvija
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Thu Ngan Dinhová
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Ivan Khalakhan
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Tomas Skála
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Zdeněk Doležal
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Oleksii Bezkrovnyi
- W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Leszek Kepinski
- W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-422 Wroclaw, Poland
| | - Mykhailo Vorokhta
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
| | - Iva Matolínová
- Department of Surface and Plasma Science, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
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7
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Nieves LM, Dong YC, Rosario-Berríos DN, Mossburg K, Hsu JC, Cramer GM, Busch TM, Maidment ADA, Cormode DP. Renally Excretable Silver Telluride Nanoparticles as Contrast Agents for X-ray Imaging. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34354-34364. [PMID: 35867906 PMCID: PMC9482380 DOI: 10.1021/acsami.2c06190] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The use of nanoparticles in the biomedical field has gained much attention due to their applications in biomedical imaging, drug delivery, and therapeutics. Silver telluride nanoparticles (Ag2Te NPs) have been recently shown to be highly effective computed tomography (CT) and dual-energy mammography contrast agents with good stability and biocompatibility, as well as to have potential for many other biomedical purposes. Despite their numerous advantageous properties for diagnosis and treatment of disease, the clinical translation of Ag2Te NPs is dependent on achieving high levels of excretion, a limitation for many nanoparticle types. In this work, we have synthesized and characterized a library of Ag2Te NPs and identified conditions that led to 3 nm core size and were renally excretable. We found that these nanoparticles have good biocompatibility, strong X-ray contrast generation, and rapid renal clearance. Our CT data suggest that renal elimination of nanoparticles occurred within 2 h of administration. Moreover, biodistribution data indicate that 93% of the injected dose (%ID) has been excreted from the main organs in 24 h, 95% ID in 7 days, and 97% ID in 28 days with no signs of acute toxicity in the tissues studied under histological analysis. To our knowledge, this renal clearance is the best reported for Ag2Te NP, while being comparable to the highest renal clearance reported for any type of nanoparticle. Together, the results herein presented suggest the use of GSH-Ag2Te NPs as an X-ray contrast agent with the potential to be clinically translated in the future.
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Affiliation(s)
- Lenitza M Nieves
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Biochemistry and Molecular Biophysics Graduate Group, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yuxi C Dong
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Derick N Rosario-Berríos
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Biochemistry and Molecular Biophysics Graduate Group, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Katherine Mossburg
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Jessica C Hsu
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Gwendolyn M Cramer
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Theresa M Busch
- Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Andrew D A Maidment
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Cardiology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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8
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Jin C, Wang B, Zhou Y, Yang F, Guo P, Liu Z, Shen W. Restructuring of the gold-carbide interface for low-temperature water-gas shift. Chem Commun (Camb) 2022; 58:7313-7316. [PMID: 35678733 DOI: 10.1039/d2cc02478k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A passivated Au/α-MoC catalyst, containing 2-4 layered Au clusters of 1.6 nm, was re-activated by CH4/H2 at 590 °C, during which the structure of the gold-carbide interface changed considerably. The partially-oxidized surface Mo species were carburized to MoC, while the Au clusters dispersed into smaller ones, accompanied by the coating of carbide thin layers on Au. This restructuring promoted charge transfer from Au to MoC and extended the Au-MoC interfacial perimeter, which was largely responsible for the activity in the low-temperature water-gas shift reaction.
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Affiliation(s)
- Chuanchuan Jin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Beibei Wang
- Center for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Yan Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Fan Yang
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China.
| | - Peiyao Guo
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Zhi Liu
- Center for Transformative Science, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai 201210, China
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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9
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Wang L, Yan L, Ye L, Chen J, Li Y, Zhang Q, Jing C. Identification and Characterization of a Au(III) Reductase from Erwinia sp. IMH. JACS AU 2022; 2:1435-1442. [PMID: 35783184 PMCID: PMC9241155 DOI: 10.1021/jacsau.2c00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/27/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Microorganisms contribute to the formation of secondary gold (Au) deposits through enzymatic reduction of Au(III) to Au(0). However, the enzyme that catalyzes the reduction of Au(III) remains enigmatic. Here, we identified and characterized a previously unknown Au reductase (GolR) in the cytoplasm of Erwinia sp. IMH. The expression of golR was strongly up-regulated in response to increasing Au(III) concentrations and exposure time. Mutant with in-frame deletion of golR was incapable of reducing Au(III), and the capability was rescued by reintroducing wild-type golR into the mutant strain. The Au(III) reduction was determined to occur in the cytoplasmic space by comparing the TEM images of the wild-type, mutant, and complemented strains. In vitro assays of the purified GolR protein confirmed its ability to reduce Au(III) to Au nanoparticles. Molecular dynamic simulations demonstrated that the hydrophobic cavity of GolR may selectively bind AuCl2(OH)2 -, the predominant auric chloride species at neutral pH. Density functional theory calculations revealed that AuCl2(OH)2 - may be coordinated at the Fe-containing active site of GolR and is probably reduced via three consecutive proton-coupled electron transfer processes. The new class of reductase, GolR, opens the chapter for the mechanistic understanding of Au(III) bioreduction.
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Affiliation(s)
- Liying Wang
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Li Yan
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
| | - Li Ye
- School
of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Jinfeng Chen
- Environment
Research Institute, Shandong University, Qingdao 266237, China
| | - Yanwei Li
- Environment
Research Institute, Shandong University, Qingdao 266237, China
| | - Qingzhu Zhang
- Environment
Research Institute, Shandong University, Qingdao 266237, China
| | - Chuanyong Jing
- State
Key Laboratory of Environmental Chemistry and Ecotoxicology, Research
Center for Eco-Environmental Sciences, Chinese
Academy of Sciences, Beijing 100085, China
- School
of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
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10
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Joudeh N, Linke D. Nanoparticle classification, physicochemical properties, characterization, and applications: a comprehensive review for biologists. J Nanobiotechnology 2022; 20:262. [PMID: 35672712 PMCID: PMC9171489 DOI: 10.1186/s12951-022-01477-8] [Citation(s) in RCA: 136] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 05/23/2022] [Indexed: 12/31/2022] Open
Abstract
Interest in nanomaterials and especially nanoparticles has exploded in the past decades primarily due to their novel or enhanced physical and chemical properties compared to bulk material. These extraordinary properties have created a multitude of innovative applications in the fields of medicine and pharma, electronics, agriculture, chemical catalysis, food industry, and many others. More recently, nanoparticles are also being synthesized ‘biologically’ through the use of plant- or microorganism-mediated processes, as an environmentally friendly alternative to the expensive, energy-intensive, and potentially toxic physical and chemical synthesis methods. This transdisciplinary approach to nanoparticle synthesis requires that biologists and biotechnologists understand and learn to use the complex methodology needed to properly characterize these processes. This review targets a bio-oriented audience and summarizes the physico–chemical properties of nanoparticles, and methods used for their characterization. It highlights why nanomaterials are different compared to micro- or bulk materials. We try to provide a comprehensive overview of the different classes of nanoparticles and their novel or enhanced physicochemical properties including mechanical, thermal, magnetic, electronic, optical, and catalytic properties. A comprehensive list of the common methods and techniques used for the characterization and analysis of these properties is presented together with a large list of examples for biogenic nanoparticles that have been previously synthesized and characterized, including their application in the fields of medicine, electronics, agriculture, and food production. We hope that this makes the many different methods more accessible to the readers, and to help with identifying the proper methodology for any given nanoscience problem.
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11
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Li G, Jang H, Liu S, Li Z, Kim MG, Qin Q, Liu X, Cho J. The synergistic effect of Hf-O-Ru bonds and oxygen vacancies in Ru/HfO2 for enhanced hydrogen evolution. Nat Commun 2022; 13:1270. [PMID: 35277494 PMCID: PMC8917135 DOI: 10.1038/s41467-022-28947-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 02/15/2022] [Indexed: 11/09/2022] Open
Abstract
Ru nanoparticles have been demonstrated to be highly active electrocatalysts for the hydrogen evolution reaction (HER). At present, most of Ru nanoparticles-based HER electrocatalysts with high activity are supported by heteroatom-doped carbon substrates. Few metal oxides with large band gap (more than 5 eV) as the substrates of Ru nanoparticles are employed for the HER. By using large band gap metal oxides substrates, we can distinguish the contribution of Ru nanoparticles from the substrates. Here, a highly efficient Ru/HfO2 composite is developed by tuning numbers of Ru-O-Hf bonds and oxygen vacancies, resulting in a 20-fold enhancement in mass activity over commercial Pt/C in an alkaline medium. Density functional theory (DFT) calculations reveal that strong metal-support interaction via Ru-O-Hf bonds and the oxygen vacancies in the supported Ru samples synergistically lower the energy barrier for water dissociation to improve catalytic activities. Although ruthenium nanomaterials have proven to be effective catalysts for H2 evolution, there is still room for activity improvements. Here, authors develop an efficient Ru/HfO2 electrocatalyst with tuned Ru-O-Hf bonds and oxygen vacancies that shows high activities for alkaline H2 evolution.
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12
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Longo A, Giannici F, Casaletto MP, Rovezzi M, Sahle CJ, Glatzel P, Joly Y, Martorana A. Dynamic Role of Gold d-Orbitals during CO Oxidation under Aerobic Conditions. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05739] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alessandro Longo
- ESRF - The European Synchrotron, CS 40220, 38043 Cedex 9 Grenoble, France
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - Francesco Giannici
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, I-90128 Palermo, Italy
| | - Maria Pia Casaletto
- Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - Mauro Rovezzi
- ESRF - The European Synchrotron, CS 40220, 38043 Cedex 9 Grenoble, France
- Universitè Grenoble Alpes, CNRS, IRD, Irstea, Météo France, OSUG, FAME, 71 Avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Christoph J. Sahle
- ESRF - The European Synchrotron, CS 40220, 38043 Cedex 9 Grenoble, France
| | - Pieter Glatzel
- ESRF - The European Synchrotron, CS 40220, 38043 Cedex 9 Grenoble, France
| | - Yves Joly
- Universitè Grenoble Alpes Inst NEEL, 38042 Grenoble (France) and CNRS, Inst NEEL, 38042 Grenoble, France
| | - Antonino Martorana
- Dipartimento di Fisica e Chimica, Università di Palermo, Viale delle Scienze, I-90128 Palermo, Italy
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13
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Das RK, Sanyal D, Kumar P, Pulicharla R, Brar SK. Science-society-policy interface for microplastic and nanoplastic: Environmental and biomedical aspects. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:117985. [PMID: 34454195 DOI: 10.1016/j.envpol.2021.117985] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 08/06/2021] [Accepted: 08/14/2021] [Indexed: 06/13/2023]
Abstract
The global concern over the possible consequences of the downsizing of plastic to microplastics (MPs) and nano plastics (NPs) needs to be addressed with a new conceptual framework. The transformation of plastics to MPs and NPs can be discussed in terms of fundamental physics principles applicable to micro and nanophase matter and colloidal science principles. Further, accurate and reliable detection and characterization of MPs and NPs are crucial for an extensive understanding of their environmental and ecological impacts. The other decisive factor that can classify MPs and NPs as hazardous to existing nanomaterials is discussing the cytotoxicity study on human cell lines. The human health risk assessment that might arise from the ingestion of MPs and NPs can be addressed about contrast agents used for medical imaging. However, the lack of standard analytical techniques for MPs and NPs measurement is an emerging challenge for analytical scientists due to their complex physicochemical properties, especially in environmental samples. This review article navigates readers through the point of origin of MPs and NPs and their interdisciplinary aspects. Biomedical applications of plastics and concerns over the toxicity of MPs and NPs are further analyzed. Moreover, the analytical challenges of MPs and NPs have been discussed with critical inputs. Finally, the worldwide efforts being made for creating a common platform of discussion on a different aspect of plastic pollution were taken into account.
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Affiliation(s)
- Ratul Kumar Das
- TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, Gual Pahari, 122001, Haryana, India
| | - Doyeli Sanyal
- TERI-Deakin Nanobiotechnology Centre, The Energy and Resources Institute, Gual Pahari, 122001, Haryana, India; Amity University Punjab, Block-D, Aerocity, Sector-82-A, Mohali, Chandigarh, 140306, India
| | - Pratik Kumar
- INRS-ETE, Université Du Québec, 490, Rue de La Couronne, Québec, G1K 9A9, Canada; Indian Institute of Technology Jammu, Department of Civil Engineering., Jagti, NH 44, Nagrota Bypass, Jammu (J & K), 181221, India
| | - Rama Pulicharla
- École Supérieure D'aménagement Du Territoire et de Développement Régional, Pavillon Félix-Antoine-Savard, Bureau 1616, 2325, Rue des Bibliothèques, Université Laval, Québec, QC, G1V 0A6, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, M3J 1P3, Ontario, Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université Du Québec, 490, Rue de La Couronne, Québec, G1K 9A9, Canada; Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, M3J 1P3, Ontario, Canada.
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14
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Chai OJH, Wu Z, Xie J. All Hydroxyl-Thiol-Protected Gold Nanoclusters with Near-Neutral Surface Charge. J Phys Chem Lett 2021; 12:9882-9887. [PMID: 34609875 DOI: 10.1021/acs.jpclett.1c02989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hydrophilic gold nanoclusters (Au NCs) whose physical and chemical properties are not susceptible to large changes in pH are greatly desired for diverse applications. Here, we design Au NCs protected by a hydroxyl-thiol ligand (e.g., 1-thioglycerol (TG)) with a molecular formula of Au34(TG)22 as a proof-of-concept for a Au NC model with near-neutral surface charge. Unlike hydrophilic thiols with charged functional groups (e.g., carboxylate-thiol) that are usually used for hydrophilic Au NCs, this type of Au NCs is protected by hydroxyl-thiols, which are less susceptible to the prevailing pH conditions as the hydroxyl group is less acidic than water. More interestingly, the resulting Au NCs also possess pH-independent fluorescence intensity, making them suitable for applications under strong acidic conditions, which are currently not available in the reported hydrophilic Au NCs.
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Affiliation(s)
- Osburg J H Chai
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Zhennan Wu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
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15
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Walkowiak A, Wolska J, Wojtaszek-Gurdak A, Sobczak I, Wolski L, Ziolek M. Modification of Gold Zeolitic Supports for Catalytic Oxidation of Glucose to Gluconic Acid. MATERIALS 2021; 14:ma14185250. [PMID: 34576474 PMCID: PMC8467280 DOI: 10.3390/ma14185250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 01/10/2023]
Abstract
Activity of gold supported catalysts strongly depends on the type and composition of support, which determine the size of Au nanoparticles (Au NPs), gold-support interaction influencing gold properties, interaction with the reactants and, in this way, the reaction pathway. The aim of this study was to use two types of zeolites: the three dimensional HBeta and the layered two-dimensional MCM-36 as supports for gold, and modification of their properties towards the achievement of different properties in oxidation of glucose to gluconic acid with molecular oxygen and hydrogen peroxide. Such an approach allowed establishment of relationships between the activity of gold catalysts and different parameters such as Au NPs size, electronic properties of gold, structure and acidity of the supports. The zeolites were modified with (3-aminopropyl)-trimethoxysilane (APMS), which affected the support features and Au NPs properties. Moreover, the modification of the zeolite lattice with boron was applied to change the strength of the zeolite acidity. All modifications resulted in changes in glucose conversion, while maintaining high selectivity to gluconic acid. The most important findings include the differences in the reaction steps limiting the reaction rate depending on the nature of the oxidant applied (oxygen vs. H2O2), the important role of porosity of the zeolite supports, and accumulation of negative charge on Au NPs in catalytic oxidation of glucose.
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Affiliation(s)
| | - Joanna Wolska
- Correspondence: (A.W.); (J.W.); Tel.: +48-618-291-794 (A.W.)
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16
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Strasser JW, Hersbach TJP, Liu J, Lapp AS, Frenkel AI, Crooks RM. Electrochemical Cleaning Stability and Oxygen Reduction Reaction Activity of 1‐2 nm Dendrimer‐Encapsulated Au Nanoparticles. ChemElectroChem 2021. [DOI: 10.1002/celc.202100549] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Juliette W. Strasser
- Department of Chemistry and Texas Materials Institute The University of Texas at Austin 2506 Speedway, Stop A5300 Austin TX 78712-1224, U.S.A
| | - Thomas J. P. Hersbach
- Department of Chemistry and Texas Materials Institute The University of Texas at Austin 2506 Speedway, Stop A5300 Austin TX 78712-1224, U.S.A
| | - Jing Liu
- Department of Physics Manhattan College Riverdale NY 10471 USA
| | - Aliya S. Lapp
- Department of Chemistry and Texas Materials Institute The University of Texas at Austin 2506 Speedway, Stop A5300 Austin TX 78712-1224, U.S.A
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering Stony Brook University Stony Brook NY 11794 USA
- Division of Chemistry Brookhaven National Laboratory Upton NY 11973 USA
| | - Richard M. Crooks
- Department of Chemistry and Texas Materials Institute The University of Texas at Austin 2506 Speedway, Stop A5300 Austin TX 78712-1224, U.S.A
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17
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Pramanik G, Kvakova K, Thottappali MA, Rais D, Pfleger J, Greben M, El-Zoka A, Bals S, Dracinsky M, Valenta J, Cigler P. Inverse heavy-atom effect in near infrared photoluminescent gold nanoclusters. NANOSCALE 2021; 13:10462-10467. [PMID: 34076660 DOI: 10.1039/d1nr02440j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Fluorophores functionalized with heavy elements show enhanced intersystem crossing due to increased spin-orbit coupling, which in turn shortens the fluorescence decay lifetime (τPL). This phenomenon is known as the heavy-atom effect (HAE). Here, we report the observation of increased τPL upon functionalisation of near-infrared photoluminescent gold nanoclusters with iodine. The heavy atom-mediated increase in τPL is in striking contrast with the HAE and referred to as inverse HAE. Femtosecond and nanosecond transient absorption spectroscopy revealed overcompensation of a slight decrease in lifetime of the transition associated with the Au core (ps) by a large increase in the long-lived triplet state lifetime associated with the Au shell, which contributed to the observed inverse HAE. This unique observation of inverse HAE in gold nanoclusters provides the means to enhance the triplet excited state lifetime.
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Affiliation(s)
- Goutam Pramanik
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10 Prague 6, Czechia.
| | - Klaudia Kvakova
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10 Prague 6, Czechia.
| | - Muhammed Arshad Thottappali
- Institute of Macromolecular Chemistry of the CAS, Heyrovsky Sq. 2, 162 06 Prague 6, Czechia and Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czechia.
| | - David Rais
- Institute of Macromolecular Chemistry of the CAS, Heyrovsky Sq. 2, 162 06 Prague 6, Czechia
| | - Jiri Pfleger
- Institute of Macromolecular Chemistry of the CAS, Heyrovsky Sq. 2, 162 06 Prague 6, Czechia
| | - Michael Greben
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czechia.
| | - Ayman El-Zoka
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Sara Bals
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Martin Dracinsky
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10 Prague 6, Czechia.
| | - Jan Valenta
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czechia.
| | - Petr Cigler
- Institute of Organic Chemistry and Biochemistry of the CAS, Flemingovo nam. 2, 166 10 Prague 6, Czechia.
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18
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Lee J, Jeong C, Yang Y. Single-atom level determination of 3-dimensional surface atomic structure via neural network-assisted atomic electron tomography. Nat Commun 2021; 12:1962. [PMID: 33785754 PMCID: PMC8009920 DOI: 10.1038/s41467-021-22204-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 02/26/2021] [Indexed: 11/11/2022] Open
Abstract
Functional properties of nanomaterials strongly depend on their surface atomic structures, but they often become largely different from their bulk structures, exhibiting surface reconstructions and relaxations. However, most of the surface characterization methods are either limited to 2D measurements or not reaching to true 3D atomic-scale resolution, and single-atom level determination of the 3D surface atomic structure for general 3D nanomaterials still remains elusive. Here we demonstrate the measurement of 3D atomic structure at 15 pm precision using a Pt nanoparticle as a model system. Aided by a deep learning-based missing data retrieval combined with atomic electron tomography, the surface atomic structure was reliably measured. We found that <\documentclass[12pt]{minimal}
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\begin{document}$$111$$\end{document}111> facets contribute differently to the surface strain, resulting in anisotropic strain distribution as well as compressive support boundary effect. The capability of single-atom level surface characterization will not only deepen our understanding of the functional properties of nanomaterials but also open a new door for fine tailoring of their performance. Precise determination of surface atomic structure of metallic nanoparticles is key to unlock their surface/interface properties. Here the authors introduce a neural network-assisted atomic electron tomography approach that provides a three-dimensional reconstruction of metallic nanoparticles at individual atom level.
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Affiliation(s)
- Juhyeok Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Chaehwa Jeong
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
| | - Yongsoo Yang
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea.
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19
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Cativa NM, dell'Erba IE, Waiman CV, Arenas GF, Ceolín M, Giovanetti LJ, Ramallo-López JM, Eliçabe G, Hoppe CE. Tuning the Photothermal Effect of Carboxylated-Coated Silver Nanoparticles through pH-Induced Reversible Aggregation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:13998-14008. [PMID: 33170718 DOI: 10.1021/acs.langmuir.0c02528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The photothermal response of mercaptoundecanoic acid (MUA)-coated Ag nanoparticles (Ag@MUA NPs) in both aqueous dispersions and paper substrates was determined as a function of pH when irradiated with a green laser or a blue LED source. Aqueous dispersions of Ag@MUA NPs showed an aggregation behavior by acidification that was used for the formation of NPs clusters of variable sizes. Aggregation was induced by changing the pH across the apparent pKa of the acid, higher than the pKa of the free acid. Formation of these aggregates was completely reversible allowing the return to the well-dispersed initial state by simply increasing the pH by the addition of a base. Aggregation produced a shift of the plasmon band that changed the spectra of the dispersions and their ability to be remotely heated when irradiated with visible light. These aggregates could be transferred to paper by simple impregnation of the substrates with the dispersion. On the solid substrate, a higher photothermal response than in the liquid medium was observed. A high local increase of up to 75 °C could be recorded on paper after only 30 s of irradiation with a green laser, whereas a blue LED array was enough for inducing the melting of a solid paraffin (Tm = 36-38 °C) deposited on it. This work demonstrates that photothermal heating can be controlled by the reversible aggregation of NPs to induce different thermal responses in liquid and solid media.
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Affiliation(s)
- Nancy M Cativa
- Nanostructured Polymer Division, INTEMA, UNMDP-CONICET, Avenida Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina
| | - Ignacio E dell'Erba
- Nanostructured Polymer Division, INTEMA, UNMDP-CONICET, Avenida Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina
| | - Carolina V Waiman
- Instituto de Química del Sur (INQUISUR), CONICET-Departamento de Química, Universidad Nacional del Sur (UNS), Avenida Alem 1253, Bahía Blanca, 8000, Argentina
| | - Gustavo F Arenas
- LASER Laboratory-ICYTE-UNMDP-CONICET, Avenida J. B. Justo 4302, B7608FDQ Mar del Plata, Argentina
| | - Marcelo Ceolín
- INIFTA, UNLP-CONICET, Diagonal 113 y 64, CP 1900 La Plata, Argentina
| | | | | | - Guillermo Eliçabe
- Nanostructured Polymer Division, INTEMA, UNMDP-CONICET, Avenida Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina
| | - Cristina E Hoppe
- Nanostructured Polymer Division, INTEMA, UNMDP-CONICET, Avenida Juan B. Justo 4302, B7608FDQ Mar del Plata, Argentina
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20
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van Turnhout L, Hattori Y, Meng J, Zheng K, Sá J. Direct Observation of a Plasmon-Induced Hot Electron Flow in a Multimetallic Nanostructure. NANO LETTERS 2020; 20:8220-8228. [PMID: 33095592 PMCID: PMC7662917 DOI: 10.1021/acs.nanolett.0c03344] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Plasmon hot carriers are interesting for photoredox chemical synthesis but their direct utilization is limited by their ultrafast thermalization. Therefore, they are often transferred to suitable accepting materials that expedite their lifetime. Solid-state photocatalysts are technologically more suitable than their molecular counterparts, but their photophysical processes are harder to follow due to the absence of clear optical fingerprints. Herein, the journey of hot electrons in a solid-state multimetallic photocatalyst is revealed by a combination of ultrafast visible and infrared spectroscopy. Dynamics showed that electrons formed upon silver plasmonic excitation reach the gold catalytic site within 700 fs and the electron flow could also be reversed. Gold is the preferred site until saturation of its 5d band occurs. Silver-plasmon hot electrons increased the rate of nitrophenol reduction 16-fold, confirming the preponderant role of hot electrons in the overall catalytic activity and the importance to follow hot carriers' journeys in solid-state photosystems.
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Affiliation(s)
- Lars van Turnhout
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Yocefu Hattori
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
| | - Jie Meng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
| | - Kaibo Zheng
- Department
of Chemistry, Technical University of Denmark, DK-2800 Kongens
Lyngby, Denmark
- Chemical
Physics and NanoLund, Lund University, Box 124, 22100 Lund, Sweden
| | - Jacinto Sá
- Physical
Chemistry Division, Department of Chemistry, Ångström
Laboratory, Uppsala University, 75120 Uppsala, Sweden
- Institute
of Physical Chemistry, Polish Academy of
Sciences, 01-224 Warsaw, Poland
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21
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Enhanced charge carrier conduction and other characteristic parameters of hexagonal plastic columnar phase of a discotic liquid crystalline material due to functionalized gold nanoparticles. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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22
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Lv J, Yang J, Jiao S, Huang P, Ma K, Wang J, Xu X, Liu L. Ultrathin Quasibinary Heterojunctioned ReS 2/MoS 2 Film with Controlled Adhesion from a Bimetallic Co-Feeding Atomic Layer Deposition. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43311-43319. [PMID: 32870645 DOI: 10.1021/acsami.0c12729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Heterojunctioned transition-metal dichalcogenide (TMD) films with regulatable interface adhesion have shown broad application prospects in the design of advanced materials and the manufacturing of novel functional devices. To date, the controlled fabrication of TMD heterojunctions or heterojunction-rich films with tailorable thickness and composition has proved challenging. Herein, a bimetallic co-feeding atomic layer deposition (ALD) system was developed capable of fulfilling these requirements. In the co-feeding ALD fabrication, by adjusting the Re/Mo ratio, 3-layered quasibinary heterojunctioned ReS2/MoS2 films with adjustable composition and grain size were prepared. Moreover, the measurements between atomic force microscopy Si tip coated with the ReS2/MoS2 films and films on the substrate indicate that the adhesion force can be regulated from 13.5 to 136.3 nN. Further experimental data and theoretical analysis show that the adhesion force between the coated tip and films possesses a positive correlation with the "tip-film unanimity" in composition.
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Affiliation(s)
- Jun Lv
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Junjie Yang
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Songlong Jiao
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Peng Huang
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Kejian Ma
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Jianqiao Wang
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
| | - Xiaoxuan Xu
- Nanjing Institute of Industry Technology, Nanjing 210023, People's Republic of China
| | - Lei Liu
- School of Mechanical Engineering, Southeast University, Nanjing 211189, People's Republic of China
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23
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Zheng R, Bevacqua GM, Young NR, Allison TC, Tong YJ. Site-Dependent Spin Delocalization and Evidence of Ferrimagnetism in Atomically Precise Au 25(SR) 180 Clusters as Seen by Solution 13C NMR Spectroscopy. J Phys Chem A 2020; 124:7464-7469. [PMID: 32819099 DOI: 10.1021/acs.jpca.0c02915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We report a simple but detailed solution 13C nuclear magnetic resonance spectroscopic study of atomically precise neutral Au25(SR)180 (SR = alkyl thiolate) clusters. The paramagnetic 13C Knight shift of alkyl chain carbons, which is proportional to the local electron spin density, exhibits an electron spin delocalization that exponentially decays along the alkyl chain. The magnitude and decay constant of the observed electron spin delocalization, although largely independent of alkyl chain length, depend on where, that is, "in" versus "out" (vide infra) position, the alkyl chain is bound, in agreement with density functional theory calculations. Notably, the determined position-dependent decay constants, 1.70/Å and 0.41/Å for "in" and "out" ligands, respectively, not only could have important ramifications in molecular spintronics but are also comparable to measured decay constants in molecular electrical conductance of alkyl chains, potentially offering an alternative, simple method for estimating the latter. Moreover, the negative intercept temperatures of linear fits of reciprocal 13C (as well its bound 1H) Knight shift versus temperature strongly suggest the existence of local ferrimagnetism in individual Au25(SR)180 clusters.
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Affiliation(s)
- Rongfeng Zheng
- Department of Chemistry, Georgetown University, 37th & O Streets, NW, Washington, District of Columbia 20057, United States
| | - Gianna M Bevacqua
- Department of Chemistry, Georgetown University, 37th & O Streets, NW, Washington, District of Columbia 20057, United States
| | - Nicholas R Young
- Department of Chemistry, Georgetown University, 37th & O Streets, NW, Washington, District of Columbia 20057, United States
| | - Thomas C Allison
- Chemical Informatics Group, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320, United States
| | - YuYe J Tong
- Department of Chemistry, Georgetown University, 37th & O Streets, NW, Washington, District of Columbia 20057, United States
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24
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Yu C, Yu J, Zhang H, He Z, Sha Y, Liu B, Wang Y. A facile approach for rapid on-site screening of nicotine in natural tobacco. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113841. [PMID: 31883477 DOI: 10.1016/j.envpol.2019.113841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/10/2019] [Accepted: 12/16/2019] [Indexed: 05/24/2023]
Abstract
Nicotine (Nic) exposed to the environment which comes from tobacco products is the main addictive agent and specific classes of hazardous compound that merit concern. In this study, we have established a fast and reliable method to achieve specific detection of Nic in natural nicotiana tabacum within 30 s through a miniaturized platform based on screen printed gold electrode (SPE). A simple electrochemical pretreatment mean was employed on gold surface that led to the exposure of Au (111) facet and a convenient sample pretreatment method was adopted to realize the extraction of Nic in tobacco. The present electrochemical sensor exhibits an ample range of sensing from 10 μg/g to 200 μg/g, which is able to compliance with tobacco industry testing standards of actual samples. Over 60 sampling points from different origins in China or other countries were performed with direct analysis using this method and satisfactory results have been obtained. The proposed approach was demonstrated to be a very promising platform for significantly improving analytical efficiency in laboratories as well as for monitoring the source reduction control of Nic in the environment.
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Affiliation(s)
- Chaofan Yu
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Jie Yu
- Shanghai Tobacco Group Corporation Limited, Shanghai 200082, China
| | - Huirong Zhang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Ziyan He
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yunfei Sha
- Shanghai Tobacco Group Corporation Limited, Shanghai 200082, China
| | - Baizhan Liu
- Shanghai Tobacco Group Corporation Limited, Shanghai 200082, China
| | - Ying Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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25
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Zhang Y, Hao J, Xu X, Chen X, Wang J. Protein Corona-Triggered Catalytic Inhibition of Insufficient POSS Polymer-Caged Gold Nanoparticles for Sensitive Colorimetric Detection of Metallothioneins. Anal Chem 2019; 92:2080-2087. [DOI: 10.1021/acs.analchem.9b04593] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Yue Zhang
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, China
| | - Junxia Hao
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, China
| | - Xiaojian Xu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, China
| | - Xuwei Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, China
| | - Jianhua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang, Liaoning 110819, China
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26
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Yan G, Wang Y, Zhang Z, Li J, Carlos C, German LN, Zhang C, Wang J, Voyles PM, Wang X. Enhanced Ferromagnetism from Organic-Cerium Oxide Hybrid Ultrathin Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44601-44608. [PMID: 31686493 DOI: 10.1021/acsami.9b15841] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Room-temperature ferromagnetism in two-dimensional (2D) oxide materials is an intriguing phenomenon for spintronic applications. Here, we report significantly enhanced room-temperature ferromagnetism observed from ultrathin cerium oxide nanosheets hybridized with organic surfactant molecules. The hybrid nanosheets were synthesized by ionic layer epitaxy over a large area at the water-air interface. The nanosheets exhibited a saturation magnetization of 0.149 emu/g as their thickness reduced to 0.67 nm. This value was 5 times higher than that for CeO2 thin films and more than 20 times higher than that for CeO2 nanoparticles. The magnetization was attributed to the high concentration (15.5%) of oxygen vacancies stabilized by surfactant hybridization as well as electron transfer between organic and oxide layers. This work brings an effective strategy of introducing strong ferromagnetism to functional oxide materials, which leads to a promising route toward exploring new physical properties in 2D hybrid nanomaterials.
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Affiliation(s)
- Guangyuan Yan
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
- Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering , Dalian University of Technology , Dalian 116024 , P. R. China
| | - Yizhan Wang
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Ziyi Zhang
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Jun Li
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Corey Carlos
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Lazarus N German
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Chenyu Zhang
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Jingyu Wang
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Paul M Voyles
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Xudong Wang
- Department of Material Sciences and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
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27
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Tian H, Zhou J, Li Y, Wang Y, Liu L, Ai Y, Hu Z, Li J, Guo R, Liu Z, Sun H, Liang Q. Rh Catalyzed Selective Hydrogenation of Nitroarenes under Mild Conditions: Understanding the Functional Groups Attached to the Nanoparticles. ChemCatChem 2019. [DOI: 10.1002/cctc.201901491] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Haimeng Tian
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Junjie Zhou
- Department of Electrical EngineeringTsinghua University Beijing 100084 P. R. China
| | - Yunong Li
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Yiming Wang
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Lei Liu
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Yongjian Ai
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education) Department of Chemistry, Center for Synthetic and Systems BiologyTsinghua University Beijing 100084 P. R. China
| | - Ze‐Nan Hu
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Jifan Li
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Rongxiu Guo
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Zhibo Liu
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Hong‐bin Sun
- Department of ChemistryNortheastern University Shenyang 110819 P. R. China
| | - Qionglin Liang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education) Department of Chemistry, Center for Synthetic and Systems BiologyTsinghua University Beijing 100084 P. R. China
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28
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García C, Pollitt S, van der Linden M, Truttmann V, Rameshan C, Rameshan R, Pittenauer E, Allmaier G, Kregsamer P, Stöger-Pollach M, Barrabés N, Rupprechter G. Support effect on the reactivity and stability of Au25(SR)18 and Au144(SR)60 nanoclusters in liquid phase cyclohexane oxidation. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.12.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Abstract
Nanosolids usually exhibit a variety of peculiar physical features due to the size effect. The unique surface electronic states and coordination structures of nanosolids make them particularly important as promising functional materials. After several decades of research effort on the preparation processes and formation mechanisms of nanomaterials, the attention of nanoscience has been shifted to their functionalization and utilization. In the development of nanodevices, the thermal expansion matching between nanosized components is becoming increasingly important for the selection of units and design of nanodevices. In nanosolids, particularities of bonding features and coordination environments lead to size-dependent thermal expansion behavior that is significantly different from the behavior of their bulk counterparts. Thus, size tuning becomes one of the most efficient techniques in tailoring lattice thermal expansion. Unlike the traditional tailoring methods like chemical doping, the modification of chemical bonds and lattice vibration modes mainly contributing to the abnormal thermal expansion of nanosolids can be realized by adjustment of local coordination on the surface and surface/interface lattice strain. With the introduction of the nanosizing effect, the functional properties of nanosolids can be thoroughly remolded, which provides a huge space for functional applications of negative thermal expansion (NTE) nanosolids. However, understanding the origin of novel thermal expansion in nanosolids remains a challenging issue because of the lack of knowledge of precise atomic arrangements at both long-range and local structure levels. In this Account, by virtue of various advanced characterization techniques, we provide a comprehensive understanding at the atomic level of the abnormal thermal expansion behaviors in nanosized PbTiO3-based compounds, oxides, fluorides, and bimetallic alloys. Our results demonstrate that nanoscale structural features can be used to alter the spontaneous polarization, surficial/interfacial coordination, local lattice symmetry, and elemental distribution, resulting in the crossover of thermal expansion from the bulk and the generation of zero thermal expansion (ZTE). Furthermore, structural peculiarities in nanosolids, e.g., the lack of long-range coherence, abnormal surficial/interfacial bonding, lattice imperfection, and distribution of local phases, open the door for local-scale manipulations of the physical properties of electronic structure and lattice vibration during adjustment of thermal expansion. For the development of nanodevices with high thermostability, atomic-level information on the nanostructure thermal evolution provides a guideline for intelligent designs of the functional components and matrix. Understanding of the structural transformation in nanosolids will help future exploration of functional nanomaterials based on short-range atomistic design and optimization.
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Affiliation(s)
- Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - He Zhu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Lei Hu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Jun Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
- State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
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30
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Xiong L, Sun Z, Zhang X, Zhao L, Huang P, Chen X, Jin H, Sun H, Lian Y, Deng Z, Rümmerli MH, Yin W, Zhang D, Wang S, Peng Y. Octahedral gold-silver nanoframes with rich crystalline defects for efficient methanol oxidation manifesting a CO-promoting effect. Nat Commun 2019; 10:3782. [PMID: 31439841 PMCID: PMC6706449 DOI: 10.1038/s41467-019-11766-w] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/01/2019] [Indexed: 01/03/2023] Open
Abstract
Three-dimensional bimetallic nanoframes with high spatial diffusivity and surface heterogeneity possess remarkable catalytic activities owing to their highly exposed active surfaces and tunable electronic structure. Here we report a general one-pot strategy to prepare ultrathin octahedral Au3Ag nanoframes, with the formation mechanism explicitly elucidated through well-monitored temporal nanostructure evolution. Rich crystalline defects lead to lowered atomic coordination and varied electronic states of the metal atoms as evidenced by extensive structural characterizations. When used for electrocatalytic methanol oxidation, the Au3Ag nanoframes demonstrate superior performance with a high specific activity of 3.38 mA cm−2, 3.9 times that of the commercial Pt/C. More intriguingly, the kinetics of methanol oxidation on the Au3Ag nanoframes is counter-intuitively promoted by carbon monoxide. The enhancement is ascribed to the altered reaction pathway and enhanced OH− co-adsorption on the defect-rich surfaces, which can be well understood from the d-band model and comprehensive density functional theory simulations. Direct methanol fuel cells are promising for clean, sustainable energy, but catalysts should be optimized. Here the authors construct ultrathin nanoframes with rich crystalline defects to increase electrocatalytic activity of gold for methanol oxidation, which is surprisingly promoted by carbon monoxide.
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Affiliation(s)
- Likun Xiong
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Zhongti Sun
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Xiang Zhang
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Liang Zhao
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Peng Huang
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Xiwen Chen
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Huidong Jin
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Hao Sun
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Yuebin Lian
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Zhao Deng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China. .,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China.
| | - Mark H Rümmerli
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China.,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China
| | - Wanjian Yin
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China. .,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China.
| | - Duo Zhang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, P. R. China.,Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, P. R. China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou, 215123, P. R. China.,Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, P. R. China
| | - Yang Peng
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, P. R. China. .,Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Suzhou, P. R. China.
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31
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Li M, Paidi SK, Sakowski E, Preheim S, Barman I. Ultrasensitive Detection of Hepatotoxic Microcystin Production from Cyanobacteria Using Surface-Enhanced Raman Scattering Immunosensor. ACS Sens 2019; 4:1203-1210. [PMID: 30990314 PMCID: PMC6776237 DOI: 10.1021/acssensors.8b01453] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Microcystin-LR (MC-LR) is considered the most common hazardous toxin produced during harmful algal blooms. In addition to potential risk of long-term exposure to low concentrations in drinking water, acute toxicity due to MC-LR resulting from algal blooms could result in fatalities in rare cases. Although several methods are currently available to detect MC-LR, development of a low-cost, ultrasensitive measurement method would help limit exposure by enabling early detection and continuous monitoring of MC-LR. Here, we develop a surface-enhanced Raman scattering (SERS) spectroscopic immunosensor for detection and quantification of the hepatotoxic MC-LR toxin in aquatic settings with excellent robustness, selectivity, and sensitivity. We demonstrate that the developed SERS sensor can reach a limit of detection (0.014 μg/L) at least 1 order of magnitude lower and display a linear dynamic detection range (0.01 μg/L to 100 μg/L) 2 orders of magnitude wider in comparison to the commercial enzyme-linked immunosorbent assay test. The superior analytical performance of this SERS immunosensor enables monitoring of the dynamic production of MC-LR from a Microcystis aeruginosa culture. We believe that the present method could serve as a useful tool for detection of hepatotoxic microcystin toxins in various aquatic settings such as drinking water, lakes, and reservoirs. Further development of this technique could result in single-cell microcystin resolution or real-time monitoring to mitigate the associated toxicity and economic loss.
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Affiliation(s)
- Ming Li
- School of Materials Science and Engineering, State Key Laboratory for Power Metallurgy, Central South University, Changsha, Hunan 410083, China
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Santosh Kumar Paidi
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Eric Sakowski
- Department of Environmental Health and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Sarah Preheim
- Department of Environmental Health and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Ishan Barman
- Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA
- Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
- The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland, 21287, USA
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32
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Malay AD, Miyazaki N, Biela A, Chakraborti S, Majsterkiewicz K, Stupka I, Kaplan CS, Kowalczyk A, Piette BMAG, Hochberg GKA, Wu D, Wrobel TP, Fineberg A, Kushwah MS, Kelemen M, Vavpetič P, Pelicon P, Kukura P, Benesch JLP, Iwasaki K, Heddle JG. An ultra-stable gold-coordinated protein cage displaying reversible assembly. Nature 2019; 569:438-442. [PMID: 31068697 DOI: 10.1038/s41586-019-1185-4] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 04/08/2019] [Indexed: 01/03/2023]
Abstract
Symmetrical protein cages have evolved to fulfil diverse roles in nature, including compartmentalization and cargo delivery1, and have inspired synthetic biologists to create novel protein assemblies via the precise manipulation of protein-protein interfaces. Despite the impressive array of protein cages produced in the laboratory, the design of inducible assemblies remains challenging2,3. Here we demonstrate an ultra-stable artificial protein cage, the assembly and disassembly of which can be controlled by metal coordination at the protein-protein interfaces. The addition of a gold (I)-triphenylphosphine compound to a cysteine-substituted, 11-mer protein ring triggers supramolecular self-assembly, which generates monodisperse cage structures with masses greater than 2 MDa. The geometry of these structures is based on the Archimedean snub cube and is, to our knowledge, unprecedented. Cryo-electron microscopy confirms that the assemblies are held together by 120 S-Aui-S staples between the protein oligomers, and exist in two chiral forms. The cage shows extreme chemical and thermal stability, yet it readily disassembles upon exposure to reducing agents. As well as gold, mercury(II) is also found to enable formation of the protein cage. This work establishes an approach for linking protein components into robust, higher-order structures, and expands the design space available for supramolecular assemblies to include previously unexplored geometries.
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Affiliation(s)
- Ali D Malay
- Heddle Initiative Research Unit, RIKEN, Saitama, Japan.,Biomacromolecules Research Team, Center for Sustainable Resource Science, RIKEN, Saitama, Japan
| | - Naoyuki Miyazaki
- Laboratory of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Artur Biela
- Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.,Department of Cell Biology and Imaging, Institute of Zoology and Biomedical Research, Jagiellonian University, Kraków, Poland
| | - Soumyananda Chakraborti
- Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Karolina Majsterkiewicz
- Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.,Postgraduate School of Molecular Medicine, Warsaw, Poland
| | - Izabela Stupka
- Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.,Postgraduate School of Molecular Medicine, Warsaw, Poland
| | - Craig S Kaplan
- David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, Ontario, Canada
| | - Agnieszka Kowalczyk
- Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.,Faculty of Mathematics and Computer Science, Jagiellonian University, Kraków, Poland
| | | | - Georg K A Hochberg
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK.,Department of Ecology and Evolution, University of Chicago, Chicago, IL, USA
| | - Di Wu
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
| | - Tomasz P Wrobel
- Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
| | - Adam Fineberg
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
| | - Manish S Kushwah
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
| | - Mitja Kelemen
- Jožef Stefan Institute, Ljubljana, Slovenia.,Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
| | | | | | - Philipp Kukura
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
| | - Justin L P Benesch
- Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, Oxford, UK
| | - Kenji Iwasaki
- Laboratory of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, Osaka, Japan.,Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba, Japan
| | - Jonathan G Heddle
- Heddle Initiative Research Unit, RIKEN, Saitama, Japan. .,Bionanoscience and Biochemistry Laboratory, Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.
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33
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N-heterocyclic carbene-functionalized magic-number gold nanoclusters. Nat Chem 2019; 11:419-425. [DOI: 10.1038/s41557-019-0246-5] [Citation(s) in RCA: 219] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 02/28/2019] [Indexed: 12/24/2022]
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34
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Herbert PJ, Window P, Ackerson CJ, Knappenberger KL. Low-Temperature Magnetism in Nanoscale Gold Revealed through Variable-Temperature Magnetic Circular Dichroism Spectroscopy. J Phys Chem Lett 2019; 10:189-193. [PMID: 30582816 DOI: 10.1021/acs.jpclett.8b03473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The low-temperature (0.35-4.2 K) steady-state electronic absorption of the monolayer-protected cluster (MPC) Au102( pMBA)44 was studied using magnetic circular dichroism (MCD) spectroscopy to investigate previously reported low-temperature (<50 K) magnetism in d10 nanogold systems. Variable-temperature variable-field analysis of resolvable MCD extinction components revealed two distinct magnetic anisotropic behaviors. A low-energy, diamagnetic component was correlated to excitation from states localized to the passivating ligands. A high-energy, paramagnetic component was attributed to excitation from the d-band of the Au core. The temperature dependence of the magnetic anisotropy for each component is discussed in terms of previously reported structural parameters of the atomically precise Au102( pMBA)44 MPC. It is concluded that temperature-sensitive structure-dependent Au d-d orbital interactions result in the promotion of 5d-band electrons to the 6sp-band via orbital rehybridization, inducing a 15× increase in the Landé g-factor over the temperature range spanning from 0.35 to 4.2 K.
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Affiliation(s)
- Patrick J Herbert
- Department of Chemistry , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Phillip Window
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Christopher J Ackerson
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Kenneth L Knappenberger
- Department of Chemistry , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
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35
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Titania-morphology-dependent dual-perimeter-sites catalysis by Au/TiO2 catalysts in low-temperature CO oxidation. J Catal 2018. [DOI: 10.1016/j.jcat.2018.09.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Kluenker M, Connolly BM, Marolf DM, Nawaz Tahir M, Korschelt K, Simon P, Köhler U, Plana-Ruiz S, Barton B, Panthöfer M, Kolb U, Tremel W. Controlling the Morphology of Au–Pd Heterodimer Nanoparticles by Surface Ligands. Inorg Chem 2018; 57:13640-13652. [DOI: 10.1021/acs.inorgchem.8b02236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Kluenker
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Bethany M. Connolly
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - David M. Marolf
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Department of Chemistry, Rice University, Houston, Texas 77005, United States
| | - Muhammad Nawaz Tahir
- Department of Chemistry, King Fahd University of Petroleum and Minerals, P.O. Box 5048, Dhahran 31261, Kingdom of Saudi Arabia
| | - Karsten Korschelt
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Paul Simon
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Uta Köhler
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
| | - Sergi Plana-Ruiz
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- LENS, MIND/IN2UB, Electronics and Biomedical Engineering, Faculty of Physics, University of Barcelona, Martí i Franquès, 1-11, 08028 Barcelona, Catalonia, Spain
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, 64287 Darmstadt, Germany
| | - Bastian Barton
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Division of Plastics, Fraunhofer-Institute for Structural Durability and System Reliability LBF, Schlossgartenstraße 6, 64289 Darmstadt, Germany
| | - Martin Panthöfer
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Ute Kolb
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
- Institut für Angewandte Geowissenschaften, Technische Universität Darmstadt, Schnittspahnstraße 9, 64287 Darmstadt, Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität, Duesbergweg 10-14, 55128 Mainz, Germany
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37
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Huang H, du Toit H, Panariello L, Mazzei L, Gavriilidis A. Continuous synthesis of gold nanoparticles in micro- and millifluidic systems. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2017-0119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Gold nanomaterials have diverse applications ranging from healthcare and nanomedicine to analytical sciences and catalysis. Microfluidic and millifluidic reactors offer multiple advantages for their synthesis and manufacturing, including controlled or fast mixing, accurate reaction time control and excellent heat transfer. These advantages are demonstrated by reviewing gold nanoparticle synthesis strategies in flow devices. However, there are still challenges to be resolved, such as reactor fouling, particularly if robust manufacturing processes are to be developed to achieve the desired targets in terms of nanoparticle size, size distribution, surface properties, process throughput and robustness. Solutions to these challenges are more effective through a coordinated approach from chemists, engineers and physicists, which has at its core a qualitative and quantitative understanding of the synthesis processes and reactor operation. This is important as nanoparticle synthesis is complex, encompassing multiple phenomena interacting with each other, often taking place at short timescales. The proposed methodology for the development of reactors and processes is generic and contains various interconnected considerations. It aims to be a starting point towards rigorous design procedures for the robust and reproducible continuous flow synthesis of gold nanoparticles.
Graphical Abstract:
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Affiliation(s)
- He Huang
- Department of Chemical Engineering , University College London , Torrington Place , London WC1E 7JE , UK
| | - Hendrik du Toit
- Department of Chemical Engineering , University College London , Torrington Place , London WC1E 7JE , UK
| | - Luca Panariello
- Department of Chemical Engineering , University College London , Torrington Place , London WC1E 7JE , UK
| | - Luca Mazzei
- Department of Chemical Engineering , University College London , Torrington Place , London WC1E 7JE , UK
| | - Asterios Gavriilidis
- Department of Chemical Engineering , University College London , Torrington Place , London WC1E 7JE , UK
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38
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Padmos JD, Morris DJ, Zhang P. The structure and bonding properties of tiopronin-protected silver nanoparticles as studied by X-ray absorption spectroscopy. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Thiolate-protected Ag nanoparticles (NPs) exhibit interesting physical and chemical properties which may lead to various sensing, diagnostic, and therapeutic applications. Further, understanding structure–property relationships of Ag NPs is of great interest to optimize their application. Herein, we used TEM, UV–vis, and a series of synchrotron X-ray spectroscopy techniques to probe the local structure and chemical bonding properties of thiolate-stabilized Ag NPs. Compared with other Ag nanostructures prepared under slightly modified conditions, the Ag NPs were found to have pronounced structural changes, which led to immensely different optical properties. Notably, the NPs were also found to have similar surface structure to recently elucidated Ag nanoclusters prepared with different thiolates. These findings suggest that the NP structure and optical properties can be sensitively tailored by controlling the synthetic conditions. The multi-element, multi-core excitation approach (i.e., Ag K-, Ag L3-, and S K-edges) employed in the X-ray absorption spectroscopy measurements was also demonstrated as an effective tool to uncover the NP structure from both the metal core and the ligand shell perspectives.
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Affiliation(s)
- J. Daniel Padmos
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - David J. Morris
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
- Department of Chemistry, Dalhousie University, Halifax, NS B3H 4R2, Canada
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39
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Ishida Y, Morita A, Tokunaga T, Yonezawa T. Sputter Deposition toward Short Cationic Thiolated Fluorescent Gold Nanoclusters: Investigation of Their Unique Structural and Photophysical Characteristics Using High-Performance Liquid Chromatography. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4024-4030. [PMID: 29526107 DOI: 10.1021/acs.langmuir.8b00067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We herein present the preparation of short, bulky cationic thiolate (thiocholine)-protected fluorescent Au nanoclusters via sputter deposition over a liquid polymer matrix. The obtained Au nanoclusters showed near-infrared fluorescence and had an average core diameter of 1.7 ± 0.6 nm, which is too large compared to that of the reported fluorescent Au nanoclusters prepared via chemical means. We revealed the mechanism of formation of this unique material using single-particle electron microscopy, optical measurements, X-ray photoelectron spectroscopy (XPS), and high-performance liquid chromatography fractionations. The noncrystallized image was observed via single-particle high-angle annular dark-field scanning transmission electron microscopy observations and compared with chemically synthesized crystalline Au nanoparticle with the same diameter, which demonstrated the unique structural characteristic speculated via XPS. The size fractionation and size-dependent fluorescence measurement, together with other observations, indicated that the nanoclusters most probably contained a mixture of very small fluorescent species in their aggregated form and were derived from the sputtering process itself and not from the interaction between thiol ligands.
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Affiliation(s)
- Yohei Ishida
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8 , Kita-ku, Sapporo , Hokkaido 060-8628 , Japan
| | - Akihiro Morita
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8 , Kita-ku, Sapporo , Hokkaido 060-8628 , Japan
| | - Tomoharu Tokunaga
- Department of Materials Design Innovation Engineering , Nagoya University , Furo-cho , Chikusa-ku, Nagoya 464-8603 , Japan
| | - Tetsu Yonezawa
- Division of Material Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8 , Kita-ku, Sapporo , Hokkaido 060-8628 , Japan
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40
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Ran F, Tan Y, Dong W, Liu Z, Kong L, Kang L. In situ polymerization and reduction to fabricate gold nanoparticle-incorporated polyaniline as supercapacitor electrode materials. POLYM ADVAN TECHNOL 2018. [DOI: 10.1002/pat.4273] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fen Ran
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals; Lanzhou University of Technology; Lanzhou 730050 P. R. China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu P. R. China
| | - Yongtao Tan
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu P. R. China
| | - Wenju Dong
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu P. R. China
| | - Zhen Liu
- Department of Physics & Engineering; Frostburg State University; Frostburg MD 21532-2303 USA
| | - Lingbin Kong
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals; Lanzhou University of Technology; Lanzhou 730050 P. R. China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu P. R. China
| | - Long Kang
- State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals; Lanzhou University of Technology; Lanzhou 730050 P. R. China
- School of Material Science and Engineering; Lanzhou University of Technology; Lanzhou 730050 Gansu P. R. China
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41
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Kluenker M, Mondeshki M, Nawaz Tahir M, Tremel W. Monitoring Thiol-Ligand Exchange on Au Nanoparticle Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:1700-1710. [PMID: 29307189 DOI: 10.1021/acs.langmuir.7b04015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Surface functionalization of nanoparticles (NPs) plays a crucial role in particle solubility and reactivity. It is vital for particle nucleation and growth as well as for catalysis. This raises the quest for functionalization efficiency and new approaches to probe the degree of surface coverage. We present an (in situ) proton nuclear magnetic resonance (1H NMR) study on the ligand exchange of oleylamine by 1-octadecanethiol as a function of the particle size and repeated functionalization on Au NPs. Ligand exchange is an equilibrium reaction associated with Nernst distribution, which often leads to incomplete surface functionalization following "standard" literature protocols. Here, we show that the surface coverage with the ligand depends on the (i) repeated exchange reactions with large ligand excess, (ii) size of NPs, that is, the surface curvature and reactivity, and (iii) molecular size of the ligand. As resonance shifts and extensive line broadening during and after the ligand exchange impede the evaluation of 1H NMR spectra, one- and two-dimensional 19F NMR techniques (correlation spectroscopy and diffusion ordered spectroscopy) with 1H,1H,2H,2H-perfluorodecanthiol as the fluorinated thiol ligand were employed to study the reactions. The enhanced resolution associated with the spectral range of the 19F nucleus allowed carrying out a site-specific study of thiol chemisorption. The widths and shifts of the resonance signals of the different fluorinated carbon moieties were correlated with the distance to the thiol anchor group. In addition, the diffusion analysis revealed that moieties closer to the NP surface are characterized by a broader diffusion coefficient distribution as well as slower diffusion.
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Affiliation(s)
- Martin Kluenker
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
| | - Mihail Mondeshki
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
| | - Muhammad Nawaz Tahir
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
- Chemistry Department, King Fahd University of Petroleum and Minerals , P.O. Box 5048, Dhahran 31261, Saudi Arabia
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität , Duesbergweg 10-14, 55128 Mainz, Germany
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42
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Suda M. A New Photo-Control Method for Organic–Inorganic Interface Dipoles and Its Application to Photo-Controllable Molecular Devices. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170283] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masayuki Suda
- Institute for Molecular Science, 38, Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585
- RIKEN, 2-1, Hirosawa, Wako, Saitama 351-0198
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43
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Cai XL, Liu CH, Liu J, Lu Y, Zhong YN, Nie KQ, Xu JL, Gao X, Sun XH, Wang SD. Synergistic Effects in CNTs-PdAu/Pt Trimetallic Nanoparticles with High Electrocatalytic Activity and Stability. NANO-MICRO LETTERS 2017; 9:48. [PMID: 30393743 PMCID: PMC6199041 DOI: 10.1007/s40820-017-0149-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 06/21/2017] [Indexed: 05/20/2023]
Abstract
We present a straightforward physical approach for synthesizing multiwalled carbon nanotubes (CNTs)-PdAu/Pt trimetallic nanoparticles (NPs), which allows predesign and control of the metal compositional ratio by simply adjusting the sputtering targets and conditions. The small-sized CNTs-PdAu/Pt NPs (~3 nm, Pd/Au/Pt ratio of 3:1:2) act as nanocatalysts for the methanol oxidation reaction (MOR), showing excellent performance with electrocatalytic peak current of 4.4 A mgPt -1 and high stability over 7000 s. The electrocatalytic activity and stability of the PdAu/Pt trimetallic NPs are much superior to those of the corresponding Pd/Pt and Au/Pt bimetallic NPs, as well as a commercial Pt/C catalyst. Systematic investigation of the microscopic, crystalline, and electronic structure of the PdAu/Pt NPs reveals alloying and charge redistribution in the PdAu/Pt NPs, which are responsible for the promotion of the electrocatalytic performance.
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Affiliation(s)
- Xin-Lei Cai
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Chang-Hai Liu
- School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, 213164 Jiangsu People’s Republic of China
| | - Jie Liu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Ying Lu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Ya-Nan Zhong
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Kai-Qi Nie
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Jian-Long Xu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Xu Gao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Xu-Hui Sun
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
| | - Sui-Dong Wang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123 Jiangsu People’s Republic of China
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44
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Tian C, Zhu X, Abney CW, Liu X, Foo GS, Wu Z, Li M, Meyer HM, Brown S, Mahurin SM, Wu S, Yang SZ, Liu J, Dai S. Toward the Design of a Hierarchical Perovskite Support: Ultra-Sintering-Resistant Gold Nanocatalysts for CO Oxidation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00483] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chengcheng Tian
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
| | - Xiang Zhu
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
| | - Carter W. Abney
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Xiaofei Liu
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
| | - Guo Shiou Foo
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zili Wu
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Meijun Li
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
| | - Harry M. Meyer
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Suree Brown
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
| | - Shannon M. Mahurin
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Sujuan Wu
- Electron
Microscopy Center of Chongqing University, College of Materials Science
and Engineering, Chongqing University, Chongqing 400044, China
| | - Shi-Ze Yang
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jingyue Liu
- Department
of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Sheng Dai
- Department
of Chemistry, University of Tennessee-Knoxville, Tennessee 37996-1600, United States
- Chemical
Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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45
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Wang T, Liu C, Wang X, Li X, Jiang F, Li C, Hou J, Xu J. Highly enhanced thermoelectric performance of WS2nanosheets upon embedding PEDOT:PSS. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24349] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tongzhou Wang
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Congcong Liu
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Xiaodong Wang
- Key Laboratory of Automobile Materials of Ministry of Education and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Materials Science and Engineering; Jilin University; Changchun 130012 People's Republic of China
| | - Xia Li
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Fengxing Jiang
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Changcun Li
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
| | - Jian Hou
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute; Qingdao 266101 People's Republic of China
| | - Jingkun Xu
- Jiangxi Engineering Laboratory of Waterborne Coatings; Jiangxi Science and Technology Normal University; Nanchang Jiangxi 330013 People's Republic of China
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46
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Perras FA, Padmos JD, Johnson RL, Wang LL, Schwartz TJ, Kobayashi T, Horton JH, Dumesic JA, Shanks BH, Johnson DD, Pruski M. Characterizing Substrate–Surface Interactions on Alumina-Supported Metal Catalysts by Dynamic Nuclear Polarization-Enhanced Double-Resonance NMR Spectroscopy. J Am Chem Soc 2017; 139:2702-2709. [DOI: 10.1021/jacs.6b11408] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Frédéric A. Perras
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - J. Daniel Padmos
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Robert L. Johnson
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Lin-Lin Wang
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - Thomas J. Schwartz
- Department
of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Takeshi Kobayashi
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
| | - J. Hugh Horton
- Department
of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - James A. Dumesic
- Department
of Chemical and Biological Engineering, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Brent H. Shanks
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Duane D. Johnson
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department
of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50011, United States
- Department
of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Marek Pruski
- Ames
Laboratory, U.S. Department of Energy, Ames, Iowa 50011, United States
- Department
of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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47
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Competition of van der Waals and chemical forces on gold–sulfur surfaces and nanoparticles. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0017] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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48
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Limitations with solvent exchange methods for synthesis of colloidal fullerenes. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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49
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Fabrication and in / ex situ XPS Characterization of Rh Nanoparticles. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2017. [DOI: 10.1380/ejssnt.2017.50] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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50
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Li Q, Zhu H, Zheng L, Fan L, Ren Y, Chen J, Deng J, Xing X. Local Structural Distortion Induced Uniaxial Negative Thermal Expansion in Nanosized Semimetal Bismuth. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1600108. [PMID: 27980986 PMCID: PMC5102662 DOI: 10.1002/advs.201600108] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/01/2016] [Indexed: 05/25/2023]
Abstract
The corrugated layer structure bismuth has been successfully tailored into negative thermal expansion along c axis by size effect. Pair distribution function and extended X-ray absorption fine structure are combined to reveal the local structural distortion for nanosized bismuth. The comprehensive method to identify the local structure of nanomaterials can benefit the regulating and controlling of thermal expansion in nanodivices.
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Affiliation(s)
- Qiang Li
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
| | - He Zhu
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
| | - Lirong Zheng
- Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of SciencesBeijing100039China
| | - Longlong Fan
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
| | - Yang Ren
- X‐Ray Science DivisionArgonne National LaboratoryArgonneIL60439USA
| | - Jun Chen
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
| | - Jinxia Deng
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
| | - Xianran Xing
- Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing100083China
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