1
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Ternero P, Preger C, Eriksson AC, Rissler J, Hübner JM, Messing ME. In-Flight Tuning of Au-Sn Nanoparticle Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16393-16399. [PMID: 39058950 PMCID: PMC11308768 DOI: 10.1021/acs.langmuir.4c01656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 07/10/2024] [Accepted: 07/11/2024] [Indexed: 07/28/2024]
Abstract
Multimetallic nanoparticles possess a variety of beneficial properties with potential relevance for various applications. These metallic nanoparticles can consist of randomly ordered alloys, which retain the properties of the constituting elements, or ordered intermetallics, which possess extended properties. Depending on the desired application, specific alloys or intermetallic compounds are required. However, it remains challenging to achieve particular morphologies, crystal structures, chemical compositions, and particle sizes because of the inherent complexity of nanoparticle synthesis. In this work, Au-Sn nanoparticles were synthesized using a continuous one-step gas-phase synthesis method that offers the possibility to anneal the nanoparticles in flight directly after generation to tune their properties. The bimetallic model system Au-Sn, comprising both alloys and intermetallic compounds, was studied in the temperature range of 300 to 1100 °C. The bimetallic Au/Sn ratio in the nanoparticles can be adjusted with in-flight annealing between 70/30 and 40/60 atomic %. While Au-rich alloys are obtained at lower temperatures, the increase in the annealing temperature leads to the formation of more Sn-rich intermetallic phases. Surface and size effects greatly influence particle morphologies and phase fractions. This research opens new opportunities for the synthesis of customized nanoparticles by temperature adjustment and particle size selection.
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Affiliation(s)
- Pau Ternero
- Department
of Physics and NanoLund, Lund University, 221 00 Lund, Sweden
| | - Calle Preger
- Department
of Design Sciences and NanoLund, Lund University, 221 00 Lund, Sweden
- MAX
IV Laboratory, Lund University, 221 00 Lund, Sweden
| | | | - Jenny Rissler
- Department
of Design Sciences and NanoLund, Lund University, 221 00 Lund, Sweden
| | - Julia-Maria Hübner
- Faculty
of Chemistry and Food Chemistry, TUD Dresden
University of Technology, 01062 Dresden, Germany
| | - Maria E. Messing
- Department
of Physics and NanoLund, Lund University, 221 00 Lund, Sweden
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2
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Xue F, Li Q, Ji W, Lv M, Xu H, Zeng J, Li T, Ren Y, Zhou L, Chen X, Deng J, Lin K, Xing X. Highly efficient semi-hydrogenation in strained ultrathin PdCu shell and the atomic deciphering for the unlocking of activity-selectivity. Chem Sci 2024; 15:11837-11846. [PMID: 39092101 PMCID: PMC11290329 DOI: 10.1039/d4sc03291h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Accepted: 06/25/2024] [Indexed: 08/04/2024] Open
Abstract
Excellent ethylene selectivity in acetylene semi-hydrogenation is often obtained at the expense of activity. To break the activity-selectivity trade-off, precise control and in-depth understanding of the three-dimensional atomic structure of surfacial active sites are crucial. Here, we designed a novel Au@PdCu core-shell nanocatalyst featuring diluted and stretched Pd sites on the ultrathin shell (1.6 nm), which showed excellent reactivity and selectivity, with 100% acetylene conversion and 92.4% ethylene selectivity at 122 °C, and the corresponding activity was 3.3 times higher than that of the PdCu alloy. The atomic three-dimensional decoding for the activity-selectivity balance was revealed by combining pair distribution function (PDF) and reverse Monte Carlo simulation (RMC). The results demonstrate that a large number of active sites with a low coordination number of Pd-Pd pairs and an average 3.25% tensile strain are distributed on the surface of the nanocatalyst, which perform a pivotal function in the simultaneous improvement of hydrogenation activity and ethylene selectivity. Our work not only develops a novel strategy for unlocking the linear scaling relation in heterogeneous catalysis but also provides a paradigm for atomic 3D understanding of lattice strain in core-shell nanocatalysts.
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Affiliation(s)
- Fan Xue
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Weihua Ji
- College of Materials Science and Engineering, Taiyuan University of Technology Taiyuan 030024 China
| | - Mingxin Lv
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Hankun Xu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Jianrong Zeng
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences 201204 Shanghai P. R. China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences 201800 Shanghai P. R. China
| | - Tianyi Li
- X-Ray Science Division, Argonne National Laboratory Argonne Illinois 60439 USA
| | - Yang Ren
- Department of Physics, City University of Hong Kong Kowloon Hong Kong 999077 China
| | - Lihui Zhou
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Xin Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Jinxia Deng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing Beijing 100083 China
| | - Kun Lin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, 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
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3
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Vermale A, Khelladi L, Rojas-Nunez J, Baltazar S, Rogan J, Ramirez M, Roco F, Valencia FJ. Atomistic study of CoCrCuFeNi high entropy alloy nanoparticles: Role of chemical complexity. J Mol Graph Model 2024; 130:108776. [PMID: 38678645 DOI: 10.1016/j.jmgm.2024.108776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
High entropy alloy nanoparticles are envisaged as one of the most interesting materials compared to monoatomic materials due to their modulated properties in terms of their convenient surface-to-volume ratio. However, studies are still missing to unveil how composition or nanoparticle size can influence nanoparticle morphology. Based on molecular dynamics simulations, we perform a structural characterization as a function of nanoparticle size and the chemical composition of high entropy alloy nanoparticles subject to multiple annealing cycles. After the multiple thermal loads, we observe a substantial migration of copper atoms towards the np surface, consistent with the experimental results of Cu-based high entropy alloys. The resulting high entropy alloy nanoparticle behaves as a core-shell nanostructure with a rich fcc phase on the surface (50% of Cu) and 5% fcc phase in the nanoparticle core. Inspecting the nanoparticle surface, it is observed that high entropy alloy nanoparticles have a lack of surface facets, leading to a more spherical shape, quite different from mono-metallic nanoparticles with a high number of facets. Performing an average atoms simulation, it showed that nanoparticles are prone to form 111 surface facets independent of the nanoparticle size, suggesting that for high entropy alloy nanoparticles, the chemical complexity avoids the formation of surface facets. The latter can be explained in terms of the lattice distortion inducing tensile/compressive stress that drives the surface reconstruction. All in all our results match extremely well with experimental evidence of FeNiCrCoCu nanocrystalline materials, explaining the Cu segregation in terms of surface energy and mixing enthalpy criteria. We believe that our results provide a detailed characterization of high entropy nanoparticles focusing on how chemical complexity induces morphological changes compared to mono-crystalline nanoparticles. Besides, our findings are valuable for experimental works aimed at designing the shape and composition of multicomponent nanoparticles.
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Affiliation(s)
- Alice Vermale
- Polytech Clermont, Institut National Polytechnique Clermont Auvergne, 63100, France
| | - Lilian Khelladi
- Polytech Clermont, Institut National Polytechnique Clermont Auvergne, 63100, France
| | - Javier Rojas-Nunez
- Departamento de Física, Universidad de Santiago de Chile, Chile; Centro para el desarrollo de la Nanociencia y Nanotecnología, CEDENNA, Chile
| | - Samuel Baltazar
- Departamento de Física, Universidad de Santiago de Chile, Chile; Centro para el desarrollo de la Nanociencia y Nanotecnología, CEDENNA, Chile
| | - José Rogan
- Centro para el desarrollo de la Nanociencia y Nanotecnología, CEDENNA, Chile; Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, 7800024, Chile
| | - Max Ramirez
- Centro para el desarrollo de la Nanociencia y Nanotecnología, CEDENNA, Chile; Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, 7800024, Chile
| | - Fiorella Roco
- Departamento de Computación e Industria, Facultad de Ciencias de la Ingeniería, Universidad Católica del Maule, Talca, Chile
| | - Felipe J Valencia
- Centro para el desarrollo de la Nanociencia y Nanotecnología, CEDENNA, Chile; Departamento de Computación e Industria, Facultad de Ciencias de la Ingeniería, Universidad Católica del Maule, Talca, Chile.
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4
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Lim KRG, Kaiser SK, Wu H, Garg S, O'Connor CR, Reece C, Aizenberg M, Aizenberg J. Deconvoluting the Individual Effects of Nanoparticle Proximity and Size in Thermocatalysis. ACS NANO 2024; 18:15958-15969. [PMID: 38836504 DOI: 10.1021/acsnano.4c04193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Nanoparticle (NP) size and proximity are two physical descriptors applicable to practically all NP-supported catalysts. However, with conventional catalyst design, independent variation of these descriptors to investigate their individual effects on thermocatalysis remains challenging. Using a raspberry-colloid-templating approach, we synthesized a well-defined catalyst series comprising Pd12Au88 alloy NPs of three distinct sizes and at two different interparticle distances. We show that NP size and interparticle distance independently control activity and selectivity, respectively, in the hydrogenation of benzaldehyde to benzyl alcohol and toluene. Surface-sensitive spectroscopic analysis indicates that the surfaces of smaller NPs expose a greater fraction of reactive Pd dimers, compared to inactive Pd single atoms, thereby increasing intrinsic catalytic activity. Computational simulations reveal how a larger interparticle distance improves catalytic selectivity by diminishing the local benzyl alcohol concentration profile between NPs, thus suppressing its readsorption and consequently, undesired formation of toluene. Accordingly, benzyl alcohol yield is maximized using catalysts with smaller NPs separated by larger interparticle distances, overcoming activity-selectivity trade-offs. This work exemplifies the high suitability of the modular raspberry-colloid-templating method as a model catalyst platform to isolate individual descriptors and establish clear structure-property relationships, thereby bridging the materials gap between surface science and technical catalysts.
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Affiliation(s)
- Kang Rui Garrick Lim
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Selina K Kaiser
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Haichao Wu
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Sadhya Garg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Christopher R O'Connor
- Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142, United States
| | - Christian Reece
- Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142, United States
| | - Michael Aizenberg
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Joanna Aizenberg
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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5
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Liu H, Wang P, Pei Y. Mechanism Insight into Metal Exchange between Au 25(SR) 18-/Ag 25(SR) 18- Clusters and Metal Ions from Ab Initio Molecular Dynamics Simulations. Inorg Chem 2024; 63:8625-8635. [PMID: 38684116 DOI: 10.1021/acs.inorgchem.4c00010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The metal exchange reaction has emerged as an efficient method to synthesize ligand-protected alloy nanoclusters with precise compositions and structure. However, the understanding of the mechanism of these metal exchange processes is quite limited. Herein, the dynamic process of metal exchange of Au25(SR)18- and Ag25(SR)18- (R = CH3) nanoclusters with metal ions (Au+, Ag+, Cu2+, Cu+, Cd2+, and Hg2+) is investigated using ab initio molecular dynamics simulations. Computational results unveiled a multifaceted nature of the metal exchange process, dictated by several variables, including thermodynamic stability, electrochemical activity, metal affinity to ligand, and the coordination mode of metal ions. As a result of these factors, metal ions may either directly exchange with Au or Ag atoms on the icosahedral core surface by a "knock-off" mechanism or be stably adsorbed at the core-motif interface of Au25(SR)18- and Ag25(SR)18- nanoclusters. Meanwhile, we also discovered that counterions can promote adsorbed Ag and Cu atoms to diffuse into the gold core. Finally, the driving force of the galvanic reduction and antigalvanic reduction reactions is discussed. The formation of a more stable core-doping product nanocluster is the major driving force of metal exchange reactions.
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Affiliation(s)
- Hengzhi Liu
- Department of Chemistry, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan, Province 411105, China
| | - Pu Wang
- Department of Chemistry, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan, Province 411105, China
| | - Yong Pei
- Department of Chemistry, Key Laboratory for Green Organic Synthesis and Application of Hunan Province, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan, Province 411105, China
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6
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Gayen M, Chatterjee D, Shetty S, Bellare P, Ravishankar N. Shuttling Active Elements in and out of Ultrathin Nanowires: Toward Rational Design of Multicomponent Catalysts. Inorg Chem 2024; 63:5464-5469. [PMID: 38467542 DOI: 10.1021/acs.inorgchem.3c04209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
One-dimensional nanostructures, with a high ratio of surface-bulk atoms, find applications as active catalysts. Here, we report tunability in ultrathin single-crystalline AuPdPt nanowires by modifying synthesis conditions and postsynthetic treatment in a controlled ambient atmosphere. The surface microstructure modification of these nanostructures has been analyzed by integrating the results of three crucial techniques including Z-contrast HAADF-STEM imaging, X-ray photoelectron spectroscopy, and electrochemically active surface area from cyclic voltammograms.
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Affiliation(s)
- Meghabarna Gayen
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Dipanwita Chatterjee
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Shwetha Shetty
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Pavithra Bellare
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Narayanan Ravishankar
- Materials Research Centre, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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7
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Lee S, Fan C, Movsesyan A, Bürger J, Wendisch FJ, de S Menezes L, Maier SA, Ren H, Liedl T, Besteiro LV, Govorov AO, Cortés E. Unraveling the Chirality Transfer from Circularly Polarized Light to Single Plasmonic Nanoparticles. Angew Chem Int Ed Engl 2024; 63:e202319920. [PMID: 38236010 DOI: 10.1002/anie.202319920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/11/2024] [Accepted: 01/16/2024] [Indexed: 01/19/2024]
Abstract
Due to their broken symmetry, chiral plasmonic nanostructures have unique optical properties and numerous applications. However, there is still a lack of comprehension regarding how chirality transfer occurs between circularly polarized light (CPL) and these structures. Here, we thoroughly investigate the plasmon-assisted growth of chiral nanoparticles from achiral Au nanocubes (AuNCs) via CPL without the involvement of any chiral molecule stimulators. We identify the structural chirality of our synthesized chiral plasmonic nanostructures using circular differential scattering (CDS) spectroscopy, which is correlated with scanning electron microscopy imaging at both the single-particle and ensemble levels. Theoretical simulations, including hot-electron surface maps, reveal that the plasmon-induced chirality transfer is mediated by the asymmetric distribution of hot electrons on achiral AuNCs under CPL excitation. Furthermore, we shed light on how this plasmon-induced chirality transfer can also be utilized for chiral growth in bimetallic systems, such as Ag or Pd on AuNCs. The results presented here uncover fundamental aspects of chiral light-matter interaction and have implications for the future design and optimization of chiral sensors and chiral catalysis, among others.
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Affiliation(s)
- Seunghoon Lee
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
- Department of Chemistry, Dong-A University, Busan, 49315, South Korea
- Department of Chemical Engineering (BK21 FOUR Graduate Program), Dong-A University, Busan, 49315, South Korea)
| | - Chenghao Fan
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Artur Movsesyan
- Department of Physics and Astronomy, Ohio University, Athens, Ohio, 45701, United States
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Johannes Bürger
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Fedja J Wendisch
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Leonardo de S Menezes
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
- Departamento de Física, Universidade Federal de Pernambuco, 50670-901, Recife-PE, Brazil
- Faculty of Physics and Center for Nanoscience, Ludwig-Maximilians-University München, 80539, München, Germany
| | - Stefan A Maier
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia
- The Blackett Laboratory, Imperial College London, London, SW7 2AZ, United Kingdom
| | - Haoran Ren
- School of Physics and Astronomy, Monash University, Clayton, Victoria, 3800, Australia
| | - Tim Liedl
- Department of Physics and Center for NanoScience, Ludwig-Maximilians-Universität München, Amalienstrasse 54, 80799, München, Germany
| | | | - Alexander O Govorov
- Department of Physics and Astronomy, Ohio University, Athens, Ohio, 45701, United States
- Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio, 45701, United States
| | - Emiliano Cortés
- Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universität München, 80539, München, Germany
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8
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Saravanakumar K, Sathiyaseelan A, Manivasagan P, Zhang X, Jeong MS, Jang ES, Wang MH. Multifunctional chitosan-bimetallic nanocarrier deliver 5-fluorouracil for enhanced treatment of pancreatic and triple-negative breast cancer. Int J Biol Macromol 2024; 259:129165. [PMID: 38163501 DOI: 10.1016/j.ijbiomac.2023.129165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/26/2023] [Accepted: 12/29/2023] [Indexed: 01/03/2024]
Abstract
This work aimed to prepare multifunctional aptamer-conjugated, photothermally responsive 5-fluorouracil (5fu)-loaded chitosan-bimetallic (Au/Pd) nanoparticles (APT-CS-5fu-Au/Pd NPs) for improved cytotoxicity in two cancer cell lines (PANC-1 and MDA-MD 231). The CS-5fu-Au/Pd NPs were polydispersed with a size of 34.43 ± 1.59 nm. FTIR analysis indicated the presence of CS, 5fu in CS-5fu-Au/Pd NPs. The 2 theta degrees in CS-5fu-Au/Pd NPs accounted for CS and Au/Pd. Additionally, AGE revealed the conjugation of APT in CS-5fu-Au/Pd NPs. The APT-CS-5fu-Au/Pd NPs (180 μg/mL) with NIR treatment increased the temperature to >50 °C. The optimized 5fu input was 0.075 % in CS-5fu-Au/Pd NPs, exhibiting a hydrodynamic size of 112.96 ± 17.23 nm, DEE of 64.2 ± 3.77 %, and DLE of 11.1 ± 0.65 %. A higher level of 5fu release (69.8 ± 2.78 %) was observed under pH 5.4 at 74 h. In conclusion, NIR-APT-CS-5fu-Au/Pd NPs did not cause toxicity to RBC and Egg CAM, but increased cytotoxicity in MDA-MB 231 and PANC-1 cells by triggering oxidative stress-mediated cell death.
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Affiliation(s)
- Kandasamy Saravanakumar
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
| | - Anbazhagan Sathiyaseelan
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
| | - Panchanathan Manivasagan
- Department of Applied Chemistry, Kumoh National Institute of Technology, Gumi, Gyeongbuk 730-701, Republic of Korea.
| | - Xin Zhang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
| | - Myeong Seon Jeong
- Chuncheon Center, Korea Basic Science Institute, Chuncheon, South Korea.
| | - Eue-Soon Jang
- Department of Applied Chemistry, Kumoh National Institute of Technology, Gumi, Gyeongbuk 730-701, Republic of Korea.
| | - Myeong-Hyeon Wang
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 200-701, Republic of Korea.
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9
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Chepkasov IV, Zamulin IS, Baidyshev VS, Kvashnin AG. Tuning the surface properties of AuPd nanoparticles for adsorption of O and CO. Phys Chem Chem Phys 2023. [PMID: 38037396 DOI: 10.1039/d3cp03213b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Bimetallic nanoparticles are attracting increasing attention as effective catalysts because they can exhibit higher efficiencies than their monometallic counterparts. Recent studies show that PdAu nanoparticles can exhibit truly impressive catalytic activity, due to the synergistic effect of their properties. However, fine-tuning the catalytic activity requires an understanding of the full picture of the processes taking place in bimetallic particles of different compositions and structures. Here we study the influence of the structure and composition of PdAu nanoparticles on their electronic properties, charge distribution and adsorption properties (CO and O) using ab initio calculations. Two types of nanoparticles were considered: core-shell (Pd@Au and Au@Pd) and bimetallic alloy (Au-Pd) with an average diameter of 2 nm (321 atoms), having either fcc, icosahedral or amorphous structures. The results obtained on surface charges show the possibility of fine-tuning the surface properties of nanoparticles by modifying their atomic structure and composition. In addition, the adsorption of O and CO on the surface of PdAu nanoparticles with fcc structure has been studied. The obtained adsorption data correlate with the surface charge redistribution and the d-band center. The results of this study thus open up great prospects for tuning the catalytic properties of nanocatalysts by modifying their local atomic environment.
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Affiliation(s)
- Ilya V Chepkasov
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russian Federation.
- Katanov Khakas State University, 90 Lenin pr., 655017, Abakan, Russian Federation
| | - Ivan S Zamulin
- Katanov Khakas State University, 90 Lenin pr., 655017, Abakan, Russian Federation
| | - Viktor S Baidyshev
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russian Federation.
| | - Alexander G Kvashnin
- Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, bld. 1, Moscow 121205, Russian Federation.
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10
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Nguyen QN, Wang C, Shang Y, Janssen A, Xia Y. Colloidal Synthesis of Metal Nanocrystals: From Asymmetrical Growth to Symmetry Breaking. Chem Rev 2022; 123:3693-3760. [PMID: 36547384 DOI: 10.1021/acs.chemrev.2c00468] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nanocrystals offer a unique platform for tailoring the physicochemical properties of solid materials to enhance their performances in various applications. While most work on controlling their shapes revolves around symmetrical growth, the introduction of asymmetrical growth and thus symmetry breaking has also emerged as a powerful route to enrich metal nanocrystals with new shapes and complex morphologies as well as unprecedented properties and functionalities. The success of this route critically relies on our ability to lift the confinement on symmetry by the underlying unit cell of the crystal structure and/or the initial seed in a systematic manner. This Review aims to provide an account of recent progress in understanding and controlling asymmetrical growth and symmetry breaking in a colloidal synthesis of noble-metal nanocrystals. With a touch on both the nucleation and growth steps, we discuss a number of methods capable of generating seeds with diverse symmetry while achieving asymmetrical growth for mono-, bi-, and multimetallic systems. We then showcase a variety of symmetry-broken nanocrystals that have been reported, together with insights into their growth mechanisms. We also highlight their properties and applications and conclude with perspectives on future directions in developing this class of nanomaterials. It is hoped that the concepts and existing challenges outlined in this Review will drive further research into understanding and controlling the symmetry breaking process.
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Affiliation(s)
- Quynh N. Nguyen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Chenxiao Wang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Yuxin Shang
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Annemieke Janssen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
| | - Younan Xia
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia30332, United States
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia30332, United States
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11
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Huang J, Ni Z, Song X, Li H, Chen X, Zhang A, Yang H, Liu Y, Zhu P, Hua P, Yuan X. Trace Doping of Pb(OH) 2 Species on PdPb Alloys Boost Highly Active and Stable Ethanol Oxidation. ACS OMEGA 2022; 7:35720-35726. [PMID: 36249359 PMCID: PMC9558606 DOI: 10.1021/acsomega.2c03693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/21/2022] [Indexed: 06/16/2023]
Abstract
PdPb nanocrystals have drawn considerable attention due to their excellent catalytic properties, while their practical applications have been impeded by the severe degradation of activity, which is caused by the adsorption of intermediates (especially CO) during the operation. Herein, we first present porous PdPb alloys with the incorporation of amorphous Pb(OH)2 species as highly active and stable electrocatalysts. Alloying Pd with Pb species is initially proposed to optimize the Pd-Pd interatomic distance and adjust the d-band center of Pd. Importantly, the amorphous Pb(OH)2 species are beneficial to promoting the formation of OHad and the removal of COad. Therefore, PdPb-Pb(OH)2 catalysts show a mass activity of 3.18 A mgPd -1 and keep excellent stability for the ethanol oxidation reaction (EOR). In addition, further CO stripping and a series of CO poisoning experiments indicate that PdPb-Pb(OH)2 composites possess much better CO tolerance benefiting from the tuned electronic structure of Pd and surface incorporation of Pb(OH)2 species.
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Affiliation(s)
- Jialu Huang
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Zhiming Ni
- Sales
Department, Petrochina Tuha Oilfield Company, Shanshan County, Turpan 838200, Xinjiang, China
| | - Xiaofan Song
- State
Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, 2965 Dongchuan Road, Shanghai 200245, China
| | - Han Li
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Xiaolei Chen
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Aichuang Zhang
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Hu Yang
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Yuan Liu
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Peng Zhu
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Ping Hua
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
| | - Xiaolei Yuan
- School
of Chemistry and Chemical Engineering, Nantong
University, 9 Seyuan Road, Nantong 226019, China
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12
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Composition and Microstructure of Ag70Pd20Au10 Alloy Specimens with Etching and Their Catalytic Activity to Decomposition of Hydrogen Peroxide. Catal Letters 2022. [DOI: 10.1007/s10562-022-03972-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Chen S, He X, Yuan X, Wang Z, Wang T, He C, Zhang X, Mao X. A rational synthesis of ultrasmall palladium-based alloys with superhydrophilicity as biocompatible agents and recyclable catalysts. RSC Adv 2022; 12:8102-8107. [PMID: 35424747 PMCID: PMC8982336 DOI: 10.1039/d2ra00266c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/28/2022] [Indexed: 11/21/2022] Open
Abstract
As essential controlling parameters, the local surface area (size distribution) and polarity property of the surface molecules can determine the catalytic activity and biocompatibility directly. Here, ultrasmall palladium-based alloys (FePd, FePdCo, and FePdCu NCs) were developed to serve as artificial degradation catalysts with superhydrophilicity (SPh), biocompatibility, and reusability, which were referred to as "biocatalysts". As synthesized in aqueous solvent with negative surface potential while dispersing in water medium, because of the surface biological molecules effect. The obtained alloys illustrated a size distribution of about 3.5 nm. Additionally, owing to SPh property, these alloys could be stored in water up to 30 days without any precipitation and retained their monodisperse morphology in colloidal solutions. The cytotoxicity assessment of the alloys by exposing to L-929 cells over 3 days indicated that it maintained cell viability of >80% even up to 390 μg mL-1 (concentration of alloys). Furthermore, they exhibited an obvious enhancement in the catalytic performance for degrading Rhodamine B (RhB) and 4-nitrophenol (4-NP). The recyclable utilization of biocatalysts demonstrates durable stability even after 8 reduction cycles.
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Affiliation(s)
- Shiyue Chen
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
| | - Xiaoxiao He
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
| | - Xulei Yuan
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University Chongqing 401174 P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University Chongqing 401174 P. R. China
| | - Zhenyu Wang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
| | - Teng Wang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
| | - Chengdian He
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
| | - Ximu Zhang
- Chongqing Key Laboratory of Oral Disease and Biomedical Sciences, Stomatological Hospital of Chongqing Medical University Chongqing 401174 P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Stomatological Hospital of Chongqing Medical University Chongqing 401174 P. R. China
| | - Xiang Mao
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
- Chongqing Key Laboratory of Biomedical Engineering, College of Biomedical Engineering, Chongqing Medical University Chongqing 400016 P. R. China
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14
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Liao CK, Wu G, Mahmoud MA. Tuning the Optical Band Gap of Two-Dimensional WS 2 Integrated with Gold Nanocubes by Introducing Palladium Nanostructures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:10720-10731. [PMID: 34473512 DOI: 10.1021/acs.langmuir.1c01307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The two characteristic absorption peaks of semiconducting two-dimensional tungsten disulfide (WS2) are red-shifted after integrating with gold nanocube (AuNC) arrays. The amount of the red shift is reduced when the AuNCs are coated with a high concentration of Pd. A negligible shift was observed in the absorption peaks of WS2 when smaller amounts of Pd are introduced to the surface of AuNCs. Conversely, the photoluminescence (PL) of WS2 is blue-shifted when measured on top of AuNCs and AuNCs coated with different amounts of Pd. AuNC-Pd Janus nanoparticles are prepared by depositing Pd atoms asymmetrically on AuNCs assembled into 2-D arrays on the surface of a glass substrate by the chemical reduction of Pd ions. Due to the large AuNC or AuNC-Pd/WS2 Schottky barrier, the plasmon-induced hot electron transfer (PHET) from AuNCs and AuNCs coated with a high concentration of Pd is responsible for the red shift of the absorption spectrum of WS2. Introducing a lower concentration of Pd to AuNCs increases the Schottky barrier further due to the formation of the Au-Pd equilibrium Fermi level of lower energy, reducing the efficiency of PHET. The effect of Pd on the Fermi level of AuNCs vanishes at high Pd deposition. Pauli blocking and phase-space filling are responsible for the blue shift of PL of WS2 on top of AuNCs and AuNCs coated with Pd. The Pauli blocking effect is directly proportional to the PHET efficiency. This explains the significant blue shift of PL of WS2 after integrating with AuNCs and AuNCs coated with a high concentration of Pd. Additionally, depositing Pd onto AuNCs elongates the lifetime of the hot electrons and enhances the PHET efficiency.
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Affiliation(s)
- Chih-Kai Liao
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Guanhua Wu
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
| | - Mahmoud A Mahmoud
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
- Department of Chemistry, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
- Department of Physics and Astronomy, The University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, United States
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15
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Kalita GD, Sarmah PP, Kalita G, Das P. Bimetallic Au-Pd nanoparticles supported on silica with a tunable core@shell structure: enhanced catalytic activity of Pd(core)-Au(shell) over Au(core)-Pd(shell). NANOSCALE ADVANCES 2021; 3:5399-5416. [PMID: 36132629 PMCID: PMC9417894 DOI: 10.1039/d1na00489a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 08/08/2021] [Indexed: 05/05/2023]
Abstract
A facile ligand-assisted approach of synthesizing bimetallic Au-Pd nanoparticles supported on silica with a tunable core@shell structure is presented. Maneuvering the addition sequence of metal salts, both Aucore-Pdshell (Au@Pd-SiO2) and Pdcore-Aushell (Pd@Au-SiO2) nanoparticles were synthesized. The structures and compositions of the core-shell materials were confirmed by probe-corrected HRTEM, TEM-EDX mapping, EDS line scanning, XPS, PXRD, BET, FE-SEM-EDX and ICP analysis. The synergistic potentials of the core-shell materials were evaluated for two important reactions viz. hydrogenation of nitroarenes to anilines and hydration of nitriles to amides. In fact, in both the reactions, the Au-Pd materials exhibited superior performance over monometallic Au or Pd counterparts. Notably, among the two bimetallic materials, the one with Pdcore-Aushell structure displayed superior activity over the Aucore-Pdshell structure which could be attributed to the higher stability and uniform Au-Pd bimetallic interfaces in the former compared to the latter. Apart from enhanced synergism, high chemoselectivity in hydrogenation, wide functional group tolerance, high recyclability, etc. are other advantages of our system. A kinetic study has also been performed for the nitrile hydration reaction which demonstrates first order kinetics. Evaluation of rate constants along with a brief investigation on the Hammett parameters has also been presented.
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Affiliation(s)
| | - Podma P Sarmah
- Department of Chemistry, Dibrugarh University Dibrugarh Assam 786004 India
| | - Golap Kalita
- Department of Physical Science and Engineering, Nagoya Institute of Technology (NiTech) Nagoya Aichi Japan-466-8555
| | - Pankaj Das
- Department of Chemistry, Dibrugarh University Dibrugarh Assam 786004 India
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16
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Gao F, Zhang Y, Wu Z, You H, Du Y. Universal strategies to multi-dimensional noble-metal-based catalysts for electrocatalysis. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213825] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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17
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Oladipo AO, Unuofin JO, Iku SII, Nkambule TTI, Mamba BB, Msagati TAM. Bimetallic Au@Pd nanodendrite system incorporating multimodal intracellular imaging for improved doxorubicin antitumor efficiency. Int J Pharm 2021; 602:120661. [PMID: 33933638 DOI: 10.1016/j.ijpharm.2021.120661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 11/19/2022]
Abstract
The sufficient accumulation of drugs is crucial for efficient treatment in a complex tumor microenvironment. Drug delivery systems (DDS) with high surface area and selective cytotoxicity present a novel approach to mitigate insufficient drug loading for improved therapeutic response. Herein, a doxorubicin-conjugated bimetallic gold-core palladium-shell nanocarrier with multiple dense arrays of branches (Au@PdNDs.PEG/DOX) was characterized and its efficacy against breast adenocarcinoma (MCF-7) and lung adenocarcinoma (A549) cells were evaluated. Enhanced darkfield and hyperspectral imaging (HSI) microscopy were used to study the intracellular uptake and accumulation of the DOX-loaded nanodendrites A fascinating data from a 3D-CytoViva fluorescence imaging technique provided information about the dynamics of localization and distribution of the nanocarrier. In vitro cytotoxicity assays indicated that Au@PdNDs.PEG/DOX inhibited the proliferative effects of MCF-7 cells at equivalent IC50 dosage compared to DOX alone. The nanocarrier triggered higher induction of apoptosis proved by a time-dependent phosphatidylserine V release, cell cycle arrest, and flow cytometry analysis. Moreover, the cell cycle phase proportion increase suggests that the enhanced apoptotic effect induced by Au@PdNDs.PEG/DOX was via a G2/M phase arrest. Thus, this study demonstrated the potential of dendritic nanoparticles to improve DOX therapeutic efficiency and plasmonic-mediated intracellular imaging as a suitable theranostic platform for deployment in nanomedicine.
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Affiliation(s)
- Adewale O Oladipo
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa.
| | - Jeremiah O Unuofin
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Solange I I Iku
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Thabo T I Nkambule
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Bhekie B Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Titus A M Msagati
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa.
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18
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Filie A, Shirman T, Aizenberg M, Aizenberg J, Friend CM, Madix RJ. The dynamic behavior of dilute metallic alloy PdxAu1−x/SiO2 raspberry colloid templated catalysts under CO oxidation. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00469g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Dilute palladium-in-gold alloys have potential as efficient oxidation catalysts; controlling the Pd surface distribution is critical.
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Affiliation(s)
- Amanda Filie
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Tanya Shirman
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Michael Aizenberg
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Joanna Aizenberg
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
- Department of Chemistry and Chemical Biology
| | - Cynthia M. Friend
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
- Department of Chemistry and Chemical Biology
| | - Robert J. Madix
- John A. Paulson School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
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19
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Zheng Y, Wang X, Kong Y, Ma Y. Two-dimensional multimetallic alloy nanocrystals: recent progress and challenges. CrystEngComm 2021. [DOI: 10.1039/d1ce00975c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this highlight article, the recent progress on the preparation and application of multimetallic alloy nanocrystals with 2D nanostructures is systematically reviewed, as well as perspectives on future challenges and opportunities.
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Affiliation(s)
- Yiqun Zheng
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiping Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Yuhan Kong
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Yanyun Ma
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
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20
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A green synthesis of gold–palladium core–shell nanoparticles using orange peel extract through two-step reduction method and its formaldehyde colorimetric sensing performance. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.nanoso.2020.100535] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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21
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Novel silver-platinum bimetallic nanoalloy synthesized from Vernonia mespilifolia extract: Antioxidant, antimicrobial, and cytotoxic activities. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.06.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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22
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Das SK, Chandra Sahu S, Ghosh A, Kumar Jena B. The Hybrids of Core‐Shell Chain‐like Nanostructure of Au@Porous Pd with Graphene for Energy Conversion Application. ChemistrySelect 2020. [DOI: 10.1002/slct.201904968] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sushanta K. Das
- Materials Chemistry Department CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Subash Chandra Sahu
- Department of Chemistry Govt. Women's College, Sambalpur Odisha 768001 India
| | - Arnab Ghosh
- Department of Physics Indian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Bikash Kumar Jena
- Materials Chemistry Department CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
- Academy of Scientific & Innovative Research (AcSIR) Ghaziabad 201002 India
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23
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One-step electroreduction preparation of multilayered reduced graphene oxide/gold-palladium nanohybrid as a proficient electrocatalyst for development of sensitive hydrazine sensor. J Colloid Interface Sci 2020; 566:473-484. [DOI: 10.1016/j.jcis.2020.01.105] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/18/2020] [Accepted: 01/28/2020] [Indexed: 12/25/2022]
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24
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Zhang Y, Lv F, Cheng Y, Yuan Z, Yang F, Liu C, Cao Y, Zhang K, Lu H, Zada S, Guo S, Dong H, Zhang X. Pd@Au Bimetallic Nanoplates Decorated Mesoporous MnO 2 for Synergistic Nucleus-Targeted NIR-II Photothermal and Hypoxia-Relieved Photodynamic Therapy. Adv Healthc Mater 2020; 9:e1901528. [PMID: 31820854 DOI: 10.1002/adhm.201901528] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Indexed: 12/15/2022]
Abstract
Bimetallic nanoparticles have received considerable attention owing to synergistic effect and their multifunctionality. Herein, new multifunctional Pd@Au bimetallic nanoplates decorated hollow mesoporous MnO2 nanoplates (H-MnO2 ) are demonstrated for achieving not only nucleus-targeted NIR-II photothermal therapy (PTT), but also tumor microenvironment (TME) hypoxia relief enhanced photodynamic therapy (PDT). The Pd@Au nanoplates present a photothermal conversion efficiency (PTCE) as high as 56.9%, superior to those PTAs activated in the NIR-II region such as Cu9 S5 nanoparticles (37%), Cu3 BiS3 nanorods (40.7%), and Au/Cu2- x S nanocrystals (43.2%). They further functionalize with transactivator of transcription (TAT) moiety for cell nuclear-targeting and biodegradable hollow mesoporous MnO2 (≈100 nm) loaded with photosensitizer Ce6 (TAT-Pd@Au/Ce6/PAH/H-MnO2 ) to construct a hierarchical targeting nanoplatform. The as-made TAT-Pd@Au/Ce6/PAH/H-MnO2 demonstrates good premature renal clearance escape ability and increased tumor tissue accumulation. It can be degraded in acidic TME and generate O2 by reacting to endogenous H2 O2 to relieve the hypoxia for enhanced PDT, while the released small TAT-Pd@Au nanoplates can effectively enter into the nucleus to mediate PTT. As a result, a remarkable therapeutic effect is achieved owing to the synergistic PTT/PDT therapy. This hierarchical targeting, TME-responsive, cytoplasm hypoxia relief PDT, and nuclear NIR-II PTT synergistic therapy can pave a new avenue for nanomaterials-based cancer therapy.
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Affiliation(s)
- Yiyi Zhang
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Fan Lv
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
| | - Yaru Cheng
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Zhipeng Yuan
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Fan Yang
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Conghui Liu
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Yu Cao
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Kai Zhang
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Huiting Lu
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Shah Zada
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Shaojun Guo
- Department of Materials Science and EngineeringCollege of EngineeringPeking University Beijing 100871 P. R. China
- BIC‐ESATCollege of EngineeringPeking University Beijing 100871 P. R. China
| | - Haifeng Dong
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
| | - Xueji Zhang
- Beijing Key Laboratory for Bioengineering and Sensing TechnologyResearch Center for Bioengineering and Sensing TechnologySchool of Chemistry & Biological Engineering University of Science & Technology Beijing 30 Xueyuan Road Beijing 100083 P. R. China
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25
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Luneau M, Shirman T, Foucher AC, Duanmu K, Verbart DM, Sautet P, Stach EA, Aizenberg J, Madix RJ, Friend CM. Achieving High Selectivity for Alkyne Hydrogenation at High Conversions with Compositionally Optimized PdAu Nanoparticle Catalysts in Raspberry Colloid-Templated SiO2. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04243] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Alexandre C. Foucher
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | | | - David M.A. Verbart
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | | | - Eric A. Stach
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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26
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Zheng K, Fung V, Yuan X, Jiang DE, Xie J. Real Time Monitoring of the Dynamic Intracluster Diffusion of Single Gold Atoms into Silver Nanoclusters. J Am Chem Soc 2019; 141:18977-18983. [DOI: 10.1021/jacs.9b05776] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kaiyuan Zheng
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585 Singapore
| | - Victor Fung
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Xun Yuan
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - De-en Jiang
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585 Singapore
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
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27
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Yuan X, Zhang Y, Cao M, Zhou T, Jiang X, Chen J, Lyu F, Xu Y, Luo J, Zhang Q, Yin Y. Bi(OH) 3/PdBi Composite Nanochains as Highly Active and Durable Electrocatalysts for Ethanol Oxidation. NANO LETTERS 2019; 19:4752-4759. [PMID: 31189063 DOI: 10.1021/acs.nanolett.9b01843] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Developing high-performance electrocatalysts for the ethanol oxidation reaction (EOR) is critical to the commercialization of direct ethanol fuel cells. However, current EOR catalysts suffer from high cost, low activity, and poor durability. Here we report the preparation of PdBi-Bi(OH)3 composite nanochains with outstanding EOR activity and durability. The incorporation of Bi can tune the electronic structure and downshift the d-band center of Pd while the surface decoration of Bi(OH)3 can facilitate the oxidative removal of CO and other carbonaceous intermediates. As a result, the nanochains manifest an exceptional mass activity (5.30 A mgPd-1, 4.6-fold higher than that of commercial Pd/C) and outstanding durability (with a retained current density of ∼1.00 A mgPd-1 after operating for 20 000 s). More importantly, the nanochain catalyst can be reactivated, and negligible activity loss has been observed after operating for 200 000 s with periodic reactivation, making it one of the best EOR catalysts.
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Affiliation(s)
- Xiaolei Yuan
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Yong Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Muhan Cao
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Tong Zhou
- Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering , Tianjin University of Technology , Tianjin 300384 , China
| | - Xiaojing Jiang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Jinxing Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
- Department of Chemistry , University of California-Riverside , Riverside , California 92521 , United States
| | - Fenglei Lyu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Yong Xu
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Jun Luo
- Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering , Tianjin University of Technology , Tianjin 300384 , China
| | - Qiao Zhang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, SWC for Synchrotron Radiation Research , Soochow University , 199 Ren'ai Road , Suzhou 215123 , Jiangsu , People's Republic of China
| | - Yadong Yin
- Department of Chemistry , University of California-Riverside , Riverside , California 92521 , United States
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Guan Q, Kong Z, Xie Z, Chen Y, Chen S, Tian S, Ning P. Catalytic gasification of phenol in supercritical water over bimetallic Co-Ni/AC catalyst. ENVIRONMENTAL TECHNOLOGY 2019; 40:2182-2190. [PMID: 29417900 DOI: 10.1080/09593330.2018.1439111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 02/06/2018] [Indexed: 06/08/2023]
Abstract
Solid-solution bimetallic alloy catalysts containing no noble metals were developed via both simultaneous and sequential deposition in supercritical water (SCW). These bimetallic nano-catalysts were analyzed by Brunauer-Emmett-Teller, X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy. Obvious downward shifts are observed in diffraction peaks, situated between the peak (1 1 1) for Co and the peak (1 1 1) for Ni. The shifts indicate the formation of NiCo solid-solution bimetallic alloy(s). The bimetallic nanoparticles show high activity for supercritical water gasification of phenol to produce gaseous fuels. The carbon gasification efficiency (CGE) of phenol in SCW can reach 95% on the Co-Ni/AC catalyst at conditions of 500°C and 30 min, showing nearly the same CGE as the commercial noble-metal-based catalyst, such as Ru/C (5 wt% Ru) from Sigma-Aldrich. The Co-Ni/AC catalyst also shows high stability. Therefore, deposition in SCW provides an effective way to create noble-metal-free solid-solution bimetallic alloy catalysts.
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Affiliation(s)
- Qingqing Guan
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
- b Collaborative Innovation Center of Western Typical Industry Environmental Pollution Control, Kunming University of Science and Technology , Kunming , People's Republic of China
| | - Zhaoni Kong
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
| | - Zhengzhe Xie
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
| | - Yuan Chen
- c Institute for Integrated Catalysis, Pacific Northwest National Laboratory , Richland , WA , USA
| | - Shanshuai Chen
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
| | - Senlin Tian
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
| | - Ping Ning
- a Faculty of Environmental Science and Engineering, Kunming University of Science and Technology , Kunming , People's Republic of China
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Interface-mediated Kirkendall effect and nanoscale void migration in bimetallic nanoparticles during interdiffusion. Nat Commun 2019; 10:2831. [PMID: 31249286 PMCID: PMC6597554 DOI: 10.1038/s41467-019-10623-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/22/2019] [Indexed: 11/08/2022] Open
Abstract
At elevated temperatures, bimetallic nanomaterials change their morphologies because of the interdiffusion of atomic species, which also alters their properties. The Kirkendall effect (KE) is a well-known phenomenon associated with such interdiffusion. Here, we show how KE can manifest in bimetallic nanoparticles (NPs) by following core-shell NPs of Au and Pd during heat treatment with in situ transmission electron microscopy. Unlike monometallic NPs, these core-shell NPs did not evolve into hollow core NPs. Instead, nanoscale voids formed at the bimetallic interface and then, migrated to the NP surface. Our results show that: (1) the direction of vacancy flow during interdiffusion reverses due to the higher vacancy formation energy of Pd compared to Au, and (2) nanoscale voids migrate during heating, contrary to conventional assumptions of immobile voids and void shrinkage through vacancy emission. Our results illustrate how void behavior in bimetallic NPs can differ from an idealized picture based on atomic fluxes and have important implications for the design of these materials for high-temperature applications.
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30
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Koch R, Li G, Pandey S, Phillpot S, Wang H, Misture ST. Thermally induced transformations of Au@Cu2O core–shell nanoparticles into Au–Cu nanoparticles from temperature-programmed in situ powder X-ray diffraction. J Appl Crystallogr 2019. [DOI: 10.1107/s1600576719004497] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Temperature-programmed in situ X-ray diffraction with whole-powder-pattern modeling is used to investigate the reaction of Au@Cu2O core–shell nanoparticles to form nanocrystalline bimetallic Cu
x
Au1−x
alloys (x = 0, 0.25, 0.5, 0.75, 1.0) in a reducing atmosphere. The mechanisms of the reactions are key to informed design of tailored non-equilibrium nanostructures for catalytic and plasmonic materials. The Au@Cu2O reaction is initiated by reduction of the Cu2O cuprite shell to form nanocrystalline metallic Cu at about 413 K. Alloying begins immediately upon formation of metallic Cu at 413 K, with the nucleation of an Au-rich alloy phase which reaches the nominal Cu content of the overall system stoichiometry by 493 K. All bimetallic alloys form a transient ordered Cu3Au intermetallic compound at intermediate temperatures, with the onset of ordering and subsequent disordering varying by composition. No evidence for an ordered Au3Cu intermetallic is found for any composition. Significant crystal growth in the bimetallic phase is apparent at higher temperatures, with the onset temperature increasing with Cu concentration and initial Cu-shell thickness. The reduction of the cuprite phase is slowed by the presence of the core–shell interface, and crystal growth in the Cu shell is completely suppressed within the alloy systems.
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A comparative study of graphite and CNT supported Au-Ag, Au-Pd, Au-Pt and Au-Rh nanoalloys using MD simulation. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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32
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Kapkowski M, Niemczyk-Wojdyla A, Bartczak P, Pyrkosz Bulska M, Gajcy K, Sitko R, Zubko M, Szade J, Klimontko J, Balin K, Polanski J. A Study of Catalytic Oxidation of a Library of C₂ to C₄ Alcohols in the Presence of Nanogold. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:nano9030442. [PMID: 30875979 PMCID: PMC6474078 DOI: 10.3390/nano9030442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/09/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
The classical stoichiometric oxidation of alcohols is an important tool in contemporary organic chemistry. However, it still requires huge modifications in order to comply with the principles of green chemistry. The use of toxic chemicals, hazardous organic solvents, and the large amounts of toxic wastes that result from the reactions are a few examples of the problems that must be solved. Nanogold alone or conjugated with palladium were supported on different carriers (SiO₂, C) and investigated in order to evaluate their catalytic potential for environmentally friendly alcohol oxidation under solvent-free and base-free conditions in the presence H₂O₂ as a clean oxidant. We tested different levels of Au loading (0.1⁻1.2% wt.) and different active catalytic site forms (monometallic Au or bimetallic Au⁻Pd sites). This provided new insights on how the structure of the Au-dispersions affected their catalytic performance. Importantly, the examination of the catalytic performance of the resulting catalysts was oriented toward a broad scope of alcohols, including those that are the most resistant to oxidation-the primary aliphatic alcohols. Surprisingly, the studies proved that Au/SiO₂ at a level of Au loading as low as 0.1% wt. appeared to be efficient and prospective catalytic system for the green oxidation of alcohol. Most importantly, the results revealed that 0.1% Au/SiO₂ might be the catalyst of choice with a wide scope of utility in the green oxidation of various structurally different alcohols as well as the non-activated aliphatic ones.
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Affiliation(s)
- Maciej Kapkowski
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
| | | | - Piotr Bartczak
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
| | | | - Kamila Gajcy
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
| | - Rafal Sitko
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
| | - Maciej Zubko
- Institute of Materials Science, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
- Department of Physics, University of Hradec Králové, Rokitanského 62, 500-03 Hradec Králové, Czech Republic.
| | - Jacek Szade
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
| | - Joanna Klimontko
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
| | - Katarzyna Balin
- Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland.
| | - Jaroslaw Polanski
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland.
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33
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Celik Kazici H, Yayla M. An electrocatalyst for detection of glucose in human blood: synergy in Pd–AuNPs/GOx/C surfaces. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1576645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hilal Celik Kazici
- Faculty of Engineering Department of Chemical Engineering, Van Yüzüncü Yıl University, Van, Turkey
| | - Muge Yayla
- Van Yüzüncü Yıl University Institute of Science, Van, Turkey
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34
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Bhattarai N, Prozorov T. Direct Observation of Early Stages of Growth of Multilayered DNA-Templated Au-Pd-Au Core-Shell Nanoparticles in Liquid Phase. Front Bioeng Biotechnol 2019; 7:19. [PMID: 30863747 PMCID: PMC6399153 DOI: 10.3389/fbioe.2019.00019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/25/2019] [Indexed: 01/18/2023] Open
Abstract
We report here on direct observation of early stages of formation of multilayered bimetallic Au-Pd core-shell nanocubes and Au-Pd-Au core-shell nanostars in liquid phase using low-dose in situ scanning transmission electron microscopy (S/TEM) with the continuous flow fluid cell. The reduction of Pd and formation of Au-Pd core-shell is achieved through the flow of the reducing agent. Initial rapid growth of Pd on Au along <111> direction is followed by a slower rearrangement of Pd shell. We propose the mechanism for the DNA-directed shape transformation of Au-Pd core-shell nanocubes to adopt a nanostar-like morphology in the presence of T30 DNA and discuss the observed nanoparticle motion in the confined volume of the fluid cell. The growth of Au shell over Au-Pd nanocube is initiated at the vertices of the nanocubes, leading to the preferential growth of the {111} facets and resulting in formation of nanostar-like particles. While the core-shell nanostructures formed in a fluid cell in situ under the low-dose imaging conditions closely resemble those obtained in solution syntheses, the reaction kinetics in the fluid cell is affected by the radiolysis of liquid reagents induced by the electron beam, altering the rate-determining reaction steps. We discuss details of the growth processes and propose the reaction mechanism in liquid phase in situ.
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Affiliation(s)
| | - Tanya Prozorov
- Emergent Atomic and Magnetic Structures, Division of Materials Sciences and Engineering, Ames Laboratory, US Department of Energy, Ames, IA, United States
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35
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Kiani MT, Wang Y, Bertin N, Cai W, Gu XW. Strengthening Mechanism of a Single Precipitate in a Metallic Nanocube. NANO LETTERS 2019; 19:255-260. [PMID: 30525680 DOI: 10.1021/acs.nanolett.8b03857] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanoprecipitates play a significant role in the strength, ductility, and damage tolerance of metallic alloys through their interaction with crystalline defects, especially dislocations. However, the difficulty of observing the action of individual precipitates during plastic deformation has made it challenging to conclusively determine the mechanisms of the precipitate-defect interaction for a given alloy system and presents a major bottleneck in the rational design of nanostructured alloys. Here, we demonstrate the in situ compression of core-shell nanocubes as a promising platform to determine the precise role of individual precipitates. Each nanocube with a dimension of ∼85 nm contains a single spherical precipitate of ∼25 nm diameter. The Au-core/Ag-shell nanocubes show a yield strength of 495 MPa with no strain hardening. The deformation mechanism is determined to be surface nucleation of dislocations which easily traverses through the coherent Au-Ag interface. On the other hand, the Au-core/Cu-shell nanocubes show a yield strength of 829 MPa with a pronounced strain hardening rate. Molecular dynamics and dislocation dynamics simulations, in conjunction with TEM analysis, have demonstrated the yield mechanism to be the motion of threading dislocations extending from the semicoherent Au-Cu interface to the surface, and strain hardening to be caused by a single-armed Orowan looping mechanism. Nanocube compression offers an exciting opportunity to directly compare computational models of defect dynamics with in situ deformation measurements to elucidate the precise mechanisms of precipitate hardening.
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Affiliation(s)
| | | | - Nicolas Bertin
- Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
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36
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Xing Z, Guo Z, Chen X, Zhang P, Yang W. Optimizing the activity of Pd based catalysts towards room-temperature formic acid decomposition by Au alloying. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02402b] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Herein, a series of PdAu/C alloyed catalysts were synthesized via a modified coprecipitation–reduction method by using carbon powder as a support, and their activities towards formic acid decomposition (FAD) at room temperature (30 °C) were evaluated.
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Affiliation(s)
- Zihao Xing
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130022
- China
| | - Zilong Guo
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130022
- China
| | - Xiangyu Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130022
- China
| | - Peng Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130022
- China
| | - Wensheng Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- College of Chemistry
- Jilin University
- Changchun 130022
- China
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37
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Abbaspour M, Valizadeh Z, Jorabchi MN. Nucleation, coalescence, thermal evolution, and statistical probability of formation of Au/Ir/Pd nanoalloys in gas-phase condensation process. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Nathanson M, Kanhaiya K, Pryor A, Miao J, Heinz H. Atomic-Scale Structure and Stress Release Mechanism in Core-Shell Nanoparticles. ACS NANO 2018; 12:12296-12304. [PMID: 30457827 DOI: 10.1021/acsnano.8b06118] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Core-shell nanoparticles find applications in catalysts, sensors, and theranostics. The full internal 3D atomic structure, however, cannot be resolved by current imaging and diffraction techniques. We analyzed the atomic positions and stress-release mechanism in a cubic Au-Pd core-shell nanoparticle in approximately 1000 times higher resolution than current experimental techniques using large-scale molecular dynamics simulation to overcome these limitations. The core-shell nanocube of 73 nm size was modeled similarly to solution synthesis by random epitaxial deposition of a 4 nm thick shell of Pd atoms onto a Au core of 65 nm side length using reliable interatomic potentials. The internal structure reveals specific deformations and stress relaxation mechanisms that are caused by the +4.8% lattice mismatch of gold relative to palladium and differential confinement of extended particle facets, edges, and corners by one, two, or three Au-Pd interfaces, respectively. The three-dimensional lattice strain causes long-range, arc-like bending of atomic rows along the faces and edges of the particle, especially near the Au-Pd interface, a bulging deformation of the Pd shell, and stacking faults in the Pd shell at the corners of the particle. The strain pattern and mechanism of stress release were further characterized by profiles of the atomic layer spacing in the principal crystallographic directions. Accordingly, strain in the Pd shell is several times larger in the extended facets than near the edges and corners of the nanoparticle, which likely affects adsorption, optical, and electrochemical properties. The findings are consistent with available experimental data, including 3D reconstructions of the same cubic nanoparticle by coherent diffractive imaging (CDI) and may be verified by more powerful experimental techniques in the future. The stress release mechanisms are representative for cubic core-shell nanoparticles with fcc structure and can be explored for different shapes by the same methods.
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Affiliation(s)
- Michael Nathanson
- Department of Chemical and Biological Engineering , University of Colorado at Boulder , Boulder , Colorado 80309 , United States
| | - Krishan Kanhaiya
- Department of Chemical and Biological Engineering , University of Colorado at Boulder , Boulder , Colorado 80309 , United States
| | - Alan Pryor
- Department of Physics & Astronomy and California NanoSystems Institute , University of California , Los Angeles , California 90095 , United States
| | - Jianwei Miao
- Department of Physics & Astronomy and California NanoSystems Institute , University of California , Los Angeles , California 90095 , United States
| | - Hendrik Heinz
- Department of Chemical and Biological Engineering , University of Colorado at Boulder , Boulder , Colorado 80309 , United States
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39
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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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40
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Rodríguez-Proenza CA, Palomares-Báez JP, Chávez-Rojo MA, García-Ruiz AF, Azanza-Ricardo CL, Santoveña-Uribe A, Luna-Bárcenas G, Rodríguez-López JL, Esparza R. Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles. MATERIALS 2018; 11:ma11101882. [PMID: 30279340 PMCID: PMC6212869 DOI: 10.3390/ma11101882] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/08/2018] [Accepted: 09/13/2018] [Indexed: 11/25/2022]
Abstract
Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimetallic nanoparticles depend mainly on the synthesis conditions and the miscibility of the two components. In this work, PdPt alloyed-bimetallic nanoparticles (NPs) were synthesized through the polyol method, and characterized using spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM). High-angle annular dark-field (HAADF)-STEM images of bimetallic nanoparticles were obtained. The contrast of images shows that nanoparticles have an alloy structure with an average size of 8.2 nm. Together with the characterization of nanoparticles, a systematic molecular dynamics simulations study focused on the structural stability and atomic surface segregation trends in 923-atom PdPt alloyed-bimetallic NPs was carried out.
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Affiliation(s)
- Carlos A Rodríguez-Proenza
- Posgrado en Ciencia e Ingeniería de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Campus Juriquilla, Santiago de Querétaro 76230, Qro., Mexico.
| | - Juan P Palomares-Báez
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus II, Chihuahua 31125, Chih., Mexico.
| | - Marco A Chávez-Rojo
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario s/n, Campus II, Chihuahua 31125, Chih., Mexico.
| | - Amado F García-Ruiz
- UPIICSA-COFAA, Instituto Politécnico Nacional, Te 950, Col. Granjas-México, Iztacalco, México 08400, D. F., Mexico.
| | - Cristy L Azanza-Ricardo
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Qro., Mexico.
| | - Alan Santoveña-Uribe
- Posgrado en Ciencia e Ingeniería de Materiales, Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Campus Juriquilla, Santiago de Querétaro 76230, Qro., Mexico.
| | - Gabriel Luna-Bárcenas
- Centro de Investigación y Estudios Avanzados (CINVESTAV) del Instituto Politécnico Nacional (IPN), Unidad Querétaro, Fracc. Real de Juriquilla, Santiago de Querétaro 76230, Qro., Mexico.
| | - José L Rodríguez-López
- Departamento de Materiales Avanzados, Instituto Potosino de Investigación Científica y Tecnológica, A.C., San Luis Potosí 78216, SLP, Mexico.
| | - Rodrigo Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro 76230, Qro., Mexico.
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41
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van der Hoeven JS, Welling TAJ, Silva TAG, van den Reijen JE, La Fontaine C, Carrier X, Louis C, van Blaaderen A, de Jongh PE. In Situ Observation of Atomic Redistribution in Alloying Gold-Silver Nanorods. ACS NANO 2018; 12:8467-8476. [PMID: 30011370 PMCID: PMC6197757 DOI: 10.1021/acsnano.8b03978] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 07/11/2018] [Indexed: 05/26/2023]
Abstract
The catalytic performance and optical properties of bimetallic nanoparticles critically depend on the atomic distribution of the two metals in the nanoparticles. However, at elevated temperatures, during light-induced heating, or during catalysis, atomic redistribution can occur. Measuring such metal redistribution in situ is challenging, and a single experimental technique does not suffice. Furthermore, the availability of a well-defined nanoparticle system has been an obstacle for a systematic investigation of the key factors governing the atomic redistribution. In this study, we follow metal redistribution in precisely tunable, single-crystalline Au-core, Ag-shell nanorods in situ, both at a single particle and an ensemble-averaged level, by combining in situ transmission electron spectroscopy with in situ extended X-ray absorption fine structure validated by ex situ measurements. We show that the kinetics of atomic redistribution in Au-Ag nanoparticles depend on the metal composition and particle volume, such that a higher Ag content or a larger particle size led to significantly slower metal redistribution. We developed a simple theoretical model based on Fick's first law that can correctly predict the composition- and size-dependent alloying behavior in Au-Ag nanoparticles, as observed experimentally.
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Affiliation(s)
- Jessi
E. S. van der Hoeven
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Tom A. J. Welling
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Tiago A. G. Silva
- Laboratoire
de Réactivité de Surface, Sorbonne Université, CNRS, F-75005, Paris, France
| | - Jeroen E. van den Reijen
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Camille La Fontaine
- L’Orme
des Merisiers, Synchrotron SOLEIL, BP 48, Saint-Aubin, 91 192 Gif-sur-Yvette, France
| | - Xavier Carrier
- Laboratoire
de Réactivité de Surface, Sorbonne Université, CNRS, F-75005, Paris, France
| | - Catherine Louis
- Laboratoire
de Réactivité de Surface, Sorbonne Université, CNRS, F-75005, Paris, France
| | - Alfons van Blaaderen
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
| | - Petra E. de Jongh
- Inorganic
Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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42
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Nguyen NT, Nelayah J, Alloyeau D, Wang G, Piccolo L, Afanasiev P, Ricolleau C. Thermodynamics of faceted palladium(-gold) nanoparticles supported on rutile titania nanorods studied using transmission electron microscopy. Phys Chem Chem Phys 2018; 20:13030-13037. [PMID: 29708561 DOI: 10.1039/c8cp00737c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many physical properties of nanoparticles (NPs) are driven by their equilibrium shape (ES). Thus, knowing the kinetic and thermodynamic parameters that affect the particle morphology is key for the rational design of NPs with targeted properties. Here, we report on the thermodynamic ES of supported monometallic palladium and bimetallic palladium-gold (Pd-Au) single-crystalline truncated nano-octahedra (TOs) studied using aberration-corrected transmission electron microscopy (TEM). Monometallic palladium and bimetallic Pd62Au38 and Pd43Au57 TOs were grown by pulsed laser deposition on rutile titania (r-TiO2) nanorods exposing mainly (110) facets. Particle structure and dimension were first obtained from aberration-corrected high resolution TEM (HRTEM) images acquired parallel to the metal-oxide interface. By fitting an extended Wulff-Kaishev rule to the HRTEM data of the truncated octahedral thermodynamic ES in the size range of 2 to 5 nm, we secondly determined the interface and excess line energies associated with the particle-oxide-vacuum triple phase junction in Pd and Pd43Au57 TOs in the epitaxial relationship Pd(-Au)(111)101‖r-TiO2(110)[1-1-1] and in Pd62Au38 TOs in the epitaxial relationship Pd62Au38(100)101‖r-TiO2(110)[1-10]. Our results show a decrease in particle adhesion to the oxide support upon alloying Pd with Au. The loss in adhesion is tentatively attributed to an increase of the lattice strain induced at the metal-oxide interface as gold atoms are added to the palladium lattice.
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Affiliation(s)
- Nhat Tai Nguyen
- Université Paris Diderot, Sorbonne Paris Cité, CNRS, Laboratoire Matériaux et Phénomènes Quantiques, UMR 7162, 75013, Paris, France.
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43
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Song H, Luo Z, Liu M, Zhang G, Peng W, Wang B, Zhu Y. Centrifugal Deposited Au-Pd Core-Shell Nanoparticle Film for Room-Temperature Optical Detection of Hydrogen Gas. SENSORS 2018; 18:s18051448. [PMID: 29734789 PMCID: PMC5982576 DOI: 10.3390/s18051448] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 04/27/2018] [Accepted: 05/04/2018] [Indexed: 12/23/2022]
Abstract
In the present work, centrifugal deposited Au-Pd core-shell nanoparticle (NP) film was proposed for the room-temperature optical detection of hydrogen gas. The size dimension of 44, 48, 54, and 62 nm Au-Pd core-shell nanocubes with 40 nm Au core were synthesized following a solution-based seed-mediated growth method. Compared to a pure Pd NP, this core-shell structure with an inert Au core could decrease the H diffusion length in the Pd shell. Through a modified centrifugal deposition process, continues film samples with different core-shell NPs were deposited on 10 mm diameter quartz substrates. Under various hydrogen concentration conditions, the optical response properties of these samples were characterized by an intensity-based optical fiber bundle sensor. Experimental results show that the continues film that was composed of 62 nm Au-Pd core-shell NPs has achieved a stable and repeatable reflectance response with low zero drift in the range of 4 to 0.1% hydrogen after a stress relaxation mechanism at first few loading/unloading cycles. Because of the short H diffusion length due to the thinner Pd shell, the film sample composed of 44 nm Au-Pd NPs has achieved a dramatically decreased response/recovery time to 4 s/30 s. The experiments present the promising prospect of this simple method to fabricate optical hydrogen sensors with controllable high sensitivity and response rate at low cost.
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Affiliation(s)
- Han Song
- School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China.
| | - Zhijie Luo
- School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China.
| | - Mingyao Liu
- School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China.
| | - Gang Zhang
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Wang Peng
- School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Boyi Wang
- School of Engineering, Griffith University, Nathan, QLD 4222, Australia.
| | - Yong Zhu
- School of Engineering, Griffith University, Nathan, QLD 4222, Australia.
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44
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Akbarzadeh H, Mehrjouei E, Moradi A, Shamkhali AN. Rattle, Porous, and Dense Cores and Discontinuous Porous, Continuous Porous, and Dense Shells in Pt@Au Core–Shell Nanoparticles. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hamed Akbarzadeh
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Esmat Mehrjouei
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Arezoo Moradi
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Amir Nasser Shamkhali
- Department of Chemistry, Faculty of Sciences, University of Mohaghegh Ardabili, 56199-11367 Ardabil, Iran
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45
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Xu Q, Yuan H, Dong X, Zhang Y, Asif M, Dong Z, He W, Ren J, Sun Y, Xiao F. Dual nanoenzyme modified microelectrode based on carbon fiber coated with AuPd alloy nanoparticles decorated graphene quantum dots assembly for electrochemical detection in clinic cancer samples. Biosens Bioelectron 2018; 107:153-162. [PMID: 29455025 DOI: 10.1016/j.bios.2018.02.026] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/27/2018] [Accepted: 02/08/2018] [Indexed: 10/18/2022]
Abstract
The development of high-efficient technologies for cancer biomarkers detection has attracted tremendous research effort for its great clinic significance. In this work, we designed a new type of flexible and robust nanohybrid microelectrode by modifying carbon fiber with dual nanoenzyme, i.e., AuPd alloy nanoparticles (AuPd-ANPs) decorated graphene quantum dots (GQDs) assembly, and explored its practical application in electrochemical sensing system for sensitive detection of cancer biomarker hydrogen peroxide (H2O2) in human breast cancer cells and tissue. For the preparation of dual nanoenzyme modified microelectrode, ionic liquid was used as the electrolyte for the effective electrodeposition of GQDs on carbon fiber substrate to form a close-packed assembly under a very negative potential, then the highly dense AuPd-ANPs were uniformly decorated on GQDs assembly by electrodeposition. In virtue of the structural merits and synergistic contribution of dual nanoenzyme in enhancing the electrocatalytic activity to H2O2, the resultant nanohybrid microelectrode exhibited good sensing performances for electrochemical detection of H2O2, including a high sensitivity of 371 μA cm-2 mM-1, a wide linear range from 1.0 μM to 18.44 mM, a low detection limit of 500 nM (a signal-to-noise ratio of 3:1), as well as good selectivity and biocompatibility, which could be used for real-time tracking H2O2 released from different types of human breast cells and in situ sensitive detection of H2O2 in clinical breast cancer tissue.
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Affiliation(s)
- Qi Xu
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Hao Yuan
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Xulin Dong
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Yan Zhang
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Muhammad Asif
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Zehua Dong
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China
| | - Wenshan He
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - Jinghua Ren
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, PR China
| | - Yimin Sun
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, PR China
| | - Fei Xiao
- Key laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
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46
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Yang L, Yang Q, Hu J, Bao Z, Su B, Zhang Z, Ren Q, Xing H. Metal nanoparticles in ionic liquid‐cosolvent biphasic systems as active catalysts for acetylene hydrochlorination. AIChE J 2018. [DOI: 10.1002/aic.16103] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Lifeng Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Qiwei Yang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Jingyi Hu
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Zongbi Bao
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Baogen Su
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Zhiguo Zhang
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Qilong Ren
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
| | - Huabin Xing
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological EngineeringZhejiang UniversityHangzhou310027 China
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47
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Huang R, Wen YH, Shao GF, Sun SG. Atomic structure and thermal stability of Pt-Fe bimetallic nanoparticles: from alloy to core/shell architectures. Phys Chem Chem Phys 2018; 18:17010-7. [PMID: 27297782 DOI: 10.1039/c6cp02454h] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Bimetallic nanoparticles comprising noble metal and non-noble metal have attracted intense interest over the past few decades due to their low cost and significantly enhanced catalytic performances. In this article, we have explored the atomic structure and thermal stability of Pt-Fe alloy and core-shell nanoparticles by molecular dynamics simulations. In Fe-core/Pt-shell nanoparticles, Fe with three different structures, i.e., body-centered cubic (bcc), face-centered cubic (fcc), and amorphous phases, has been considered. Our results show that Pt-Fe alloy is the most stable configuration among the four types of bimetallic nanoparticles. It has been discovered that the amorphous Fe cannot stably exist in the core and preferentially transforms into the fcc phase. The phase transition from bcc to hexagonal close packed (hcp) has also been observed in bcc-Fe-core/Pt-shell nanoparticles. In contrast, Fe with the fcc structure is the most preferred as the core component. These findings are helpful for understanding the structure-property relationships of Pt-Fe bimetallic nanoparticles, and are also of significance to the synthesis and application of noble metal based nanoparticle catalysts.
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Affiliation(s)
- Rao Huang
- Institute of Theoretical Physics and Astrophysics, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Yu-Hua Wen
- Institute of Theoretical Physics and Astrophysics, Department of Physics, Xiamen University, Xiamen 361005, China.
| | - Gui-Fang Shao
- Research Center for Cloud Computing and Big Data, Department of Automation, Xiamen University, Xiamen, 361005, China
| | - Shi-Gang Sun
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China
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48
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49
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Zhang P, Zhang X, Kang X, Liu H, Chen C, Xie C, Han B. Salt-mediated synthesis of bimetallic networks with structural defects and their enhanced catalytic performances. Chem Commun (Camb) 2018; 54:12065-12068. [DOI: 10.1039/c8cc07029f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Bimetallic alloys with abundant of structural defects and enhanced catalytic performances were prepared tailoring by salts.
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Affiliation(s)
- Pei Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xiudong Zhang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xinchen Kang
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Huizhen Liu
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Chunjun Chen
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Chao Xie
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences
- Key Laboratory of Colloid and Interface and Thermodynamics
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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50
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Salim AA, Bidin N. Pulse Q-switched Nd:YAG laser ablation grown cinnamon nanomorphologies: Influence of different liquid medium. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.08.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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