1
|
Cao Q, Liu Y, Yang L, Tan T, He J, Chen W, Li R, Wang W. Popcorn-like bimetallic palladium/platinum exhibiting enhanced peroxidase-like activity for signal enhancement in lateral flow immunoassay. Anal Chim Acta 2024; 1309:342698. [PMID: 38772661 DOI: 10.1016/j.aca.2024.342698] [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: 04/15/2024] [Accepted: 05/06/2024] [Indexed: 05/23/2024]
Abstract
BACKGROUND The lateral flow immunoassay (LFIA) is widely employed as a point-of-care testing (POCT) technique. However, its limited sensitivity hinders its application in detecting biomarkers with low abundance. Recently, the utilization of nanozymes has been implemented to enhance the sensitivity of LFIA by catalyzing the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB). The catalytic performance of nanozymes plays a crucial role in influencing the sensitivity of LFIA. RESULTS The Cornus officinalis Sieb. et Zucc-Pd@Pt (CO-Pd@Pt) nanozyme with good peroxidase-like activity was synthesized herein through a facile one-pot method employing Cornus officinalis Sieb. et Zucc extract as a reducing agent. The morphology and composition of the CO-Pd@Pt nanozyme were characterized using TEM, SEM, XRD, and XPS. As a proof of concept, the as-synthesized CO-Pd@Pt nanozyme was utilized in LFIA (CO-Pd@Pt-LFIA) for the detection of human chorionic gonadotropin (hCG). Compared to conventional gold nanoparticles-based LFIA (AuNPs-LFIA), CO-Pd@Pt-LFIA demonstrated a significant enhancement in the limit of detection (LOD, 0.08 mIU/mL), which is approximately 160 times lower than that of AuNPs-LFIA. Furthermore, experiments evaluating accuracy, precision, selectivity, interference, and stability have confirmed the practical applicability of CO-Pd@Pt-LFIA for hCG content determination. SIGNIFICANCE The present study presents a novel approach for the synthesis of bimetallic nanozymes through environmentally friendly methods, utilizing plant extracts as both protective and reducing agents. Additionally, an easily implementable technique is proposed to enhance signal detection in lateral flow immunoassays.
Collapse
Affiliation(s)
- Qianqian Cao
- Institute of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, HengYang, 421000, Hunan, China
| | - Yiqin Liu
- Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, 421000, Hunan, China
| | - Lin Yang
- Institute of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, HengYang, 421000, Hunan, China
| | - Ting Tan
- Institute of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, HengYang, 421000, Hunan, China
| | - Jian He
- Institute of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, HengYang, 421000, Hunan, China
| | - Weiwei Chen
- Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, 421000, Hunan, China
| | - Ranhui Li
- Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang, 421000, Hunan, China.
| | - Weiguo Wang
- Institute of Pharmacy and Pharmacology, Hengyang Medical School, University of South China, HengYang, 421000, Hunan, China.
| |
Collapse
|
2
|
Sandoval P, Lopez K, Arreola A, Len A, Basravi N, Yamaguchi P, Kawamura R, Stokes CX, Melendrez C, Simpson D, Lee SJ, Titus CJ, Altoe V, Sainio S, Nordlund D, Irwin K, Wolcott A. Quantum Diamonds at the Beach: Chemical Insights into Silica Growth on Nanoscale Diamond using Multimodal Characterization and Simulation. ACS NANOSCIENCE AU 2023; 3:462-474. [PMID: 38144705 PMCID: PMC10740120 DOI: 10.1021/acsnanoscienceau.3c00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 12/26/2023]
Abstract
Surface chemistry of materials that host quantum bits such as diamond is an important avenue of exploration as quantum computation and quantum sensing platforms mature. Interfacing diamond in general and nanoscale diamond (ND) in particular with silica is a potential route to integrate room temperature quantum bits into photonic devices, fiber optics, cells, or tissues with flexible functionalization chemistry. While silica growth on ND cores has been used successfully for quantum sensing and biolabeling, the surface mechanism to initiate growth was unknown. This report describes the surface chemistry responsible for silica bond formation on diamond and uses X-ray absorption spectroscopy (XAS) to probe the diamond surface chemistry and its electronic structure with increasing silica thickness. A modified Stöber (Cigler) method was used to synthesize 2-35 nm thick shells of SiO2 onto carboxylic acid-rich ND cores. The diamond morphology, surface, and electronic structure were characterized by overlapping techniques including electron microscopy. Importantly, we discovered that SiO2 growth on carboxylated NDs eliminates the presence of carboxylic acids and that basic ethanolic solutions convert the ND surface to an alcohol-rich surface prior to silica growth. The data supports a mechanism that alcohols on the ND surface generate silyl-ether (ND-O-Si-(OH)3) bonds due to rehydroxylation by ammonium hydroxide in ethanol. The suppression of the diamond electronic structure as a function of SiO2 thickness was observed for the first time, and a maximum probing depth of ∼14 nm was calculated. XAS spectra based on the Auger electron escape depth was modeled using the NIST database for the Simulation of Electron Spectra for Surface Analysis (SESSA) to support our experimental results. Additionally, resonant inelastic X-ray scattering (RIXS) maps produced by the transition edge sensor reinforces the chemical analysis provided by XAS. Researchers using diamond or high-pressure high temperature (HPHT) NDs and other exotic materials (e.g., silicon carbide or cubic-boron nitride) for quantum sensing applications may exploit these results to design new layered or core-shell quantum sensors by forming covalent bonds via surface alcohol groups.
Collapse
Affiliation(s)
- Perla
J. Sandoval
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Karen Lopez
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Andres Arreola
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Anida Len
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Nedah Basravi
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Pomaikaimaikalani Yamaguchi
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Rina Kawamura
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Camron X. Stokes
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Cynthia Melendrez
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Davida Simpson
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| | - Sang-Jun Lee
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, 2575 Sandhill Road, Menlo Park, California 94025, United States
| | - Charles James Titus
- Department
of Physics, Stanford University, 382 Via Pueblo Mall, Palo Alto, California 94025, United States
| | - Virginia Altoe
- The
Molecular Foundry, Lawrence Berkeley National
Laboratory, 1 Cyclotron
Road, Berkeley, California 94720, United States
| | - Sami Sainio
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, 2575 Sandhill Road, Menlo Park, California 94025, United States
- Microelectronics
Research Unit, University of Oulu, Pentti Kaiteran katu 1, Linnanmaa,
P.O. Box 4500, Oulu 90014, Finland
| | - Dennis Nordlund
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, 2575 Sandhill Road, Menlo Park, California 94025, United States
| | - Kent Irwin
- Stanford
Synchrotron Radiation Lightsource, SLAC
National Accelerator Laboratory, 2575 Sandhill Road, Menlo Park, California 94025, United States
- Department
of Physics, Stanford University, 382 Via Pueblo Mall, Palo Alto, California 94025, United States
| | - Abraham Wolcott
- Department
of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States
| |
Collapse
|
3
|
Borup AB, Bertelsen AD, Kløve M, Christensen RS, Broge NLN, Dippel AC, Jørgensen MRV, Iversen BB. Unveiling the formation mechanism of Pb xPd y intermetallic phases in solvothermal synthesis using in situ X-ray total scattering. NANOSCALE 2023; 15:18481-18488. [PMID: 37942507 DOI: 10.1039/d3nr03901c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Pd possesses attractive catalytic properties and nano-structuring is an obvious way to enhance catalytic activity. Alloying Pd with Pb has been shown to enhance the catalytic effect of alcohol oxidation. Further optimization of the catalytic effect can be accomplished by controlling the particle size and key to this is understanding the formation mechanism. By monitoring solvothermal syntheses using in situ X-ray total scattering, this study unveils the formation mechanism of PbxPdy intermetallic nanoparticles. The formation occurs through a multi-step mechanism. Initially, Pd nanoparticles are formed, followed by incorporation of Pb into the Pd-structure, thus forming PbxPdy intermetallic nanoparticles. By varying the reaction time and temperature, the incorporation of Pb can be controlled, thereby tailoring the phase outcome. Based on the in situ solvothermal syntheses, ex situ autoclave syntheses were performed, resulting in the synthesis of Pb3Pd5 and Pb9Pd13 with a purity above 93%. The catalytic effect of these intermetallic phases towards the hydrogen evolution reaction (HER) is assessed. It is found that Pd, Pb3Pd5, and Pb9Pd13 have comparable stabilities, however, the overpotential increases with increasing amounts of Pb.
Collapse
Affiliation(s)
- Anders Bæk Borup
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| | - Andreas Dueholm Bertelsen
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| | - Magnus Kløve
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| | - Rasmus Stubkjær Christensen
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| | - Nils Lau Nyborg Broge
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| | - Ann-Christin Dippel
- Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
| | - Mads Ry Vogel Jørgensen
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
- MAX IV Laboratory, Lund University, 224 84 Lund, Sweden
| | - Bo Brummerstedt Iversen
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, Aarhus 8000, Denmark.
| |
Collapse
|
4
|
Ashraf S, Liu Y, Wei H, Shen R, Zhang H, Wu X, Mehdi S, Liu T, Li B. Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303031. [PMID: 37356067 DOI: 10.1002/smll.202303031] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/22/2023] [Indexed: 06/27/2023]
Abstract
Bimetallic Nanoalloy catalysts have diverse uses in clean energy, sensing, catalysis, biomedicine, and energy storage, with some supported and unsupported catalysts. Conventional synthetic methods for producing bimetallic alloy nanoparticles often produce unalloyed and bulky particles that do not exhibit desired characteristics. Alloys, when prepared with advanced nanoscale methods, give higher surface area, activity, and selectivity than individual metals due to changes in their electronic properties and reduced size. This review demonstrates the synthesis methods and principles to produce and characterize highly dispersed, well-alloyed bimetallic nanoalloy particles in relatively simple, effective, and generalized approaches and the overall existence of conventional synthetic methods with modifications to prepare bimetallic alloy catalysts. The basic concepts and mechanistic understanding are represented with purposely selected examples. Herein, the enthralling properties with widespread applications of nanoalloy catalysts in heterogeneous catalysis are also presented, especially for Hydrogen Evolution Reaction (HER), Oxidation Reduction Reaction (ORR), Oxygen Evolution Reaction (OER), and alcohol oxidation with a particular focus on Pt and Pd-based bimetallic nanoalloys and their numerous fields of applications. The high entropy alloy is described as a complicated subject with an emphasis on laser-based green synthesis of nanoparticles and, in conclusion, the forecasts and contemporary challenges for the controlled synthesis of nanoalloys are addressed.
Collapse
Affiliation(s)
- Saima Ashraf
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Yanyan Liu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Science, Henan Agricultural University, 63 Nongye Road, Zhengzhou, 450002, P. R. China
| | - Huijuan Wei
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Ruofan Shen
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Huanhuan Zhang
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Xianli Wu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Sehrish Mehdi
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Tao Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Baojun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| |
Collapse
|
5
|
Garzón Manjón A, Vega-Paredes M, Berova V, Gänsler T, Schwarz T, Rivas Rivas NA, Hengge K, Jurzinsky T, Scheu C. Insights into the performance and degradation of Ru@Pt core-shell catalysts for fuel cells by advanced (scanning) transmission electron microscopy. NANOSCALE 2022; 14:18060-18069. [PMID: 36448460 DOI: 10.1039/d2nr04869h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Ru@Pt core-shell nanoparticles are currently being explored as carbon monoxide tolerant anode catalysts for proton exchange membrane fuel cells. However, little is known about their degradation under fuel cell conditions. In the present work, two types of Ru@Pt nanoparticles with nominal shell thicknesses of 1 (Ru@1Pt) and 2 (Ru@2Pt) Pt monolayers are studied as synthesized and after accelerated stress tests. These stress tests were designed to imitate the degradation occurring under fuel cell operating conditions. Our advanced (scanning) transmission electron microscopy characterization explains the superior initial electrochemical performance of Ru@1Pt. Moreover, the 3D reconstruction of the Pt shell by electron tomography reveals an incomplete shell for both samples, which results in a less stable Ru metal being exposed to an electrolyte. The degree of coverage of the Ru cores provides insights into the higher stability of Ru@2Pt during the accelerated stress tests. Our results explain how to maximize the initial performance of Ru@Pt-type catalysts, without compromising their stability under fuel cell conditions.
Collapse
Affiliation(s)
- Alba Garzón Manjón
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| | - Miquel Vega-Paredes
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| | - Viktoriya Berova
- Freudenberg Fuel Cell e-Power Systems GmbH, Bayerwaldstraße 3, 81737 München, Germany
| | - Thomas Gänsler
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| | - Torsten Schwarz
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| | - Nicolas A Rivas Rivas
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| | - Katharina Hengge
- Freudenberg Fuel Cell e-Power Systems GmbH, Bayerwaldstraße 3, 81737 München, Germany
| | - Tilman Jurzinsky
- Freudenberg Fuel Cell e-Power Systems GmbH, Bayerwaldstraße 3, 81737 München, Germany
| | - Christina Scheu
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf, Germany.
| |
Collapse
|
6
|
Carbon induced segregation of Ni atoms in Cu-Ni alloy. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
7
|
Li J, Hou M, Zhang Z. Insight into the effects of the crystal phase of Ru over ultrathin Ru@Pt core-shell nanosheets for methanol electrooxidation. NANOSCALE 2022; 14:8096-8102. [PMID: 35611673 DOI: 10.1039/d2nr01602h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Coating a second metal on the surface of ultrathin 2D nanosheets (NSs) could induce lattice strain and modify the electronic structure, thereby changing the surface reactivity. Herein, we report the effects of different crystal phases of Ru on the electrocatalytic performance of ultrathin Ru@Pt core-shell NSs for the methanol oxidation reaction (MOR). Importantly, Ru with a novel face-centered-cubic phase was found to have more effect on the electronic structure of Pt than Ru with a conventional hexagonal close-packed phase, thereby leading to improved electrocatalytic activity toward the MOR under acidic and basic conditions. It is believed that the strategy presented here would offer a new approach to the construction of bimetallic core-shell nanostructures with various promising applications.
Collapse
Affiliation(s)
- Junjun Li
- Department of Chemistry, School of Science, Tianjin University & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin 300072, China.
| | - Man Hou
- Department of Chemistry, School of Science, Tianjin University & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin 300072, China.
| | - Zhicheng Zhang
- Department of Chemistry, School of Science, Tianjin University & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin 300072, China.
| |
Collapse
|
8
|
Li K, Ma X, He S, Wang L, Yang X, Zhang G, Guan S, Qu X, Zhou S, Xu B. Ultrathin Nanosheet-Supported Ag@Ag 2O Core-Shell Nanoparticles with Vastly Enhanced Photothermal Conversion Efficiency for NIR-II-Triggered Photothermal Therapy. ACS Biomater Sci Eng 2022; 8:540-550. [PMID: 35107009 DOI: 10.1021/acsbiomaterials.1c01291] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photothermal therapy (PTT) working in the second near-infrared (NIR-II) region has aroused a huge interest due to its potential application in terms of clinical cancer treatment. However, owing to the lack of photothermal nanoagents with high photothermal conversion efficiency, NIR-II-driven PTT still suffers from poor efficiency and subsequent cancer recurrence. In this work, we show a new and highly efficient preparation approach for NIR-II photothermal nanoagents and tailor ultrathin layered double hydroxide (LDH)-supported Ag@Ag2O core-shell nanoparticles (Ag@Ag2O/LDHs-U), vastly improving NIR-II photothermal performance. A combination study (high-resolution transmission electron microscopy (HRTEM), extended X-ray absorption fine structure spectroscopy (EXAFS), and X-ray photoelectron spectroscopy (XPS)) verifies that ultrafine Ag@Ag2O core-shell nanoparticles (∼3.8 nm) are highly dispersed and firmly immobilized within ultrathin LDH nanosheets, and their Ag2O shell possesses abundant vacancy-type defects. These unique Ag@Ag2O/LDHs-U display an impressive photothermal conversion efficiency as high as 76.9% at 1064 nm. Such an excellent photothermal performance is likely attributed to the enhanced localized surface plasmon resonance (LSPR) coupling effect between Ag and Ag2O and the reduced band gap caused by vacancy-type defects in the Ag2O shell. Meanwhile, Ag@Ag2O/LDHs-U also show prominent photothermal stability, due to the unique supported core-shell nanostructure. Moreover, both in vitro and in vivo studies further confirm that Ag@Ag2O/LDHs-U possess good biocompatible properties and outstanding PTT therapeutic efficacy in the NIR-II region. This research shows a new strategy in the rational design and preparation of an efficient photothermal agent, which is helpful to achieve more accurate and effective cancer theranostics.
Collapse
Affiliation(s)
- Kunle Li
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, P. R. China
| | - Xiaotong Ma
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shan He
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, P. R. China
| | - Li Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xueting Yang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Guiju Zhang
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, P. R. China
| | - Shanyue Guan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xiaozhong Qu
- University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Shuyun Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Baocai Xu
- School of Light Industry, Beijing Technology and Business University, 11 Fucheng Road, Haidian District, Beijing 100048, P. R. China
| |
Collapse
|
9
|
Park C, Koo WT, Chong S, Shin H, Kim YH, Cho HJ, Jang JS, Kim DH, Lee J, Park S, Ko J, Kim J, Kim ID. Confinement of Ultrasmall Bimetallic Nanoparticles in Conductive Metal-Organic Frameworks via Site-Specific Nucleation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101216. [PMID: 34342046 DOI: 10.1002/adma.202101216] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/03/2021] [Indexed: 06/13/2023]
Abstract
Conductive metal-organic frameworks (cMOFs) are emerging materials for various applications due to their high surface area, high porosity, and electrical conductivity. However, it is still challenging to develop cMOFs having high surface reactivity and durability. Here, highly active and stable cMOF are presented via the confinement of bimetallic nanoparticles (BNPs) in the pores of a 2D cMOF, where the confinement is guided by dipolar-interaction-induced site-specific nucleation. Heterogeneous metal precursors are bound to the pores of 2D cMOFs by dipolar interactions, and the subsequent reduction produces ultrasmall (≈1.54 nm) and well-dispersed PtRu NPs confined in the pores of the cMOF. PtRu-NP-decorated cMOFs exhibit significantly enhanced chemiresistive NO2 sensing performances, owing to the bimetallic synergies of PtRu NPs and the high surface area and porosity of cMOF. The approach paves the way for the synthesis of highly active and conductive porous materials via bimetallic and/or multimetallic NP loading.
Collapse
Affiliation(s)
- Chungseong Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Won-Tae Koo
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Sanggyu Chong
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hamin Shin
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Yoon Hwa Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Hee-Jin Cho
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Ji-Soo Jang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Dong-Ha Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jiyoung Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Seyeon Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jaehyun Ko
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Jihan Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
- Membrane Innovation Center for Anti-virus and Air-quality Control, KAIST Institute for Nanocentury, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| |
Collapse
|
10
|
Hashiguchi Y, Watanabe F, Honma T, Nakamura I, Poly SS, Kawaguchi T, Tsuji T, Murayama H, Tokunaga M, Fujitani T. Continuous-flow synthesis of Pd@Pt core-shell nanoparticles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Huang H, Nassr ABAA, Celorrio V, Gianolio D, Hardacre C, Brett DJL, Russell AE. Contrasting the EXAFS obtained under air and H 2 environments to reveal details of the surface structure of Pt-Sn nanoparticles. Phys Chem Chem Phys 2021; 23:11738-11745. [PMID: 33982041 DOI: 10.1039/d1cp00979f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the surface structure of bimetallic nanoparticles is crucial for heterogeneous catalysis. Although surface contraction has been established in monometallic systems, less is known for bimetallic systems, especially of nanoparticles. In this work, the bond length contraction on the surface of bimetallic nanoparticles is revealed by XAS in H2 at room temperature on dealloyed Pt-Sn nanoparticles, where most Sn atoms were oxidized and segregated to the surface when measured in air. The average Sn-Pt bond length is found to be ∼0.09 Å shorter than observed in the bulk. To ascertain the effect of the Sn location on the decrease of the average bond length, Pt-Sn samples with lower surface-to-bulk Sn ratios than the dealloyed Pt-Sn were studied. The structural information specifically from the surface was extracted from the averaged XAS results using an improved fitting model combining the data measured in H2 and in air. Two samples prepared so as to ensure the absence of Sn in the bulk were also studied in the same fashion. The bond length of surface Sn-Pt and the corresponding coordination number obtained in this study show a nearly linear correlation, the origin of which is discussed and attributed to the poor overlap between the Sn 5p orbitals and the available orbitals of the Pt surface atoms.
Collapse
Affiliation(s)
- Haoliang Huang
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
| | - Abu Bakr Ahmed Amine Nassr
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK. and Fraunhofer Institute for Microstructure of Materials and System, Walter-Hülse-Straße 1, 06120 Halle (Saale), Germany
| | - Verónica Celorrio
- Diamond Light Source Ltd. Diamond House, Harwell Campus, Didcot, OX11 0DE, UK
| | - Diego Gianolio
- Diamond Light Source Ltd. Diamond House, Harwell Campus, Didcot, OX11 0DE, UK
| | - Christopher Hardacre
- School of Natural Sciences, The University of Manchester, The Mill, Manchester, M13 9PL, UK
| | - Dan J L Brett
- Department of Chemical Engineering, University College London (UCL), London, WC1E 7JE, UK
| | - Andrea E Russell
- School of Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.
| |
Collapse
|
12
|
Nelli D, Roncaglia C, Ferrando R, Minnai C. Shape Changes in AuPd Alloy Nanoparticles Controlled by Anisotropic Surface Stress Relaxation. J Phys Chem Lett 2021; 12:4609-4615. [PMID: 33971714 DOI: 10.1021/acs.jpclett.1c00787] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The shape of AuPd nanoparticles is engineered by surface stress relaxation, achieved by varying the Au content in nanoparticles of Pd-rich compositions. AuPd nanoparticles are grown in the gas phase for several compositions and growth conditions. Their structure is atomically resolved by HRTEM/STEM and EDX. In pure Pd distributions the dominant structures are FCC truncated octahedra (TO), while increasing the Au content there is a transition to icosahedral (Ih) structures in which Au atoms are preferentially placed at the nanoparticle surface. The transition is sharper for growth conditions closer to equilibrium. The physical origin of the transition is determined with the aid of computer simulations. Global optimization searches and free energy calculations confirm that Ih become the equilibrium structure for increasing the Au content. Atomic stress calculations demonstrate that the TO → Ih shape change is caused by a better relaxation of anisotropic surface stress in icosahedra.
Collapse
Affiliation(s)
- Diana Nelli
- Dipartimento di Fisica, Universitá di Genova, via Dodecaneso 33, Genova 16146, Italy
| | - Cesare Roncaglia
- Dipartimento di Fisica, Universitá di Genova, via Dodecaneso 33, Genova 16146, Italy
| | - Riccardo Ferrando
- Dipartimento di Fisica, Universitá di Genova and CNR-IMEM, via Dodecaneso 33, Genova 16146, Italy
| | - Chloé Minnai
- Molecular Cryo-Electron Microscopy Unit, Okinawa Institute of Science and Technology Graduate University Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
| |
Collapse
|
13
|
McGuire SC, Ebrahim AM, Hurley N, Zhang L, Frenkel AI, Wong SS. Reconciling structure prediction of alloyed, ultrathin nanowires with spectroscopy. Chem Sci 2021; 12:7158-7173. [PMID: 34123343 PMCID: PMC8153242 DOI: 10.1039/d1sc00627d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/11/2021] [Indexed: 01/04/2023] Open
Abstract
A number of complementary, synergistic advances are reported herein. First, we describe the 'first-time' synthesis of ultrathin Ru2Co1 nanowires (NWs) possessing average diameters of 2.3 ± 0.5 nm using a modified surfactant-mediated protocol. Second, we utilize a combination of quantitative EDS, EDS mapping (along with accompanying line-scan profiles), and EXAFS spectroscopy results to probe the local atomic structure of not only novel Ru2Co1 NWs but also 'control' samples of analogous ultrathin Ru1Pt1, Au1Ag1, Pd1Pt1, and Pd1Pt9 NWs. We demonstrate that ultrathin NWs possess an atomic-level geometry that is fundamentally dependent upon their intrinsic chemical composition. In the case of the PdPt NW series, EDS mapping data are consistent with the formation of a homogeneous alloy, a finding further corroborated by EXAFS analysis. By contrast, EXAFS analysis results for both Ru1Pt1 and Ru2Co1 imply the generation of homophilic structures in which there is a strong tendency for the clustering of 'like' atoms; associated EDS results for Ru1Pt1 convey the same conclusion, namely the production of a heterogeneous structure. Conversely, EDS mapping data for Ru2Co1 suggests a uniform distribution of both elements. In the singular case of Au1Ag1, EDS mapping results are suggestive of a homogeneous alloy, whereas EXAFS analysis pointed to Ag segregation at the surface and an Au-rich core, within the context of a core-shell structure. These cumulative outcomes indicate that only a combined consideration of both EDS and EXAFS results can provide for an accurate representation of the local atomic structure of ultrathin NW motifs.
Collapse
Affiliation(s)
- Scott C McGuire
- Department of Chemistry, Stony Brook University Stony Brook New York 11794-3400 USA
| | - Amani M Ebrahim
- Department of Materials Science and Chemical Engineering, Stony Brook University Stony Brook New York 11794-2275 USA
| | - Nathaniel Hurley
- Department of Chemistry, Stony Brook University Stony Brook New York 11794-3400 USA
| | - Lihua Zhang
- Center for Functional Nanomaterials, Brookhaven National Laboratory Upton New York 11973 USA
| | - Anatoly I Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University Stony Brook New York 11794-2275 USA
- Chemistry Division, Brookhaven National Laboratory Upton New York 11973 USA
| | - Stanislaus S Wong
- Department of Chemistry, Stony Brook University Stony Brook New York 11794-3400 USA
| |
Collapse
|
14
|
Gaidhani NG, Patra S, Chandwadkar HS, Sen D, Majumder C, Ramagiri SV, Bellare JR. Probing Kinetics and Mechanism of Formation of Mixed Metallic Nanoparticles in a Polymer Membrane by Galvanic Replacement between Two Immiscible Metals: Case Study of Nickel/Silver Nanoparticle Synthesis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1637-1650. [PMID: 33496595 DOI: 10.1021/acs.langmuir.0c02311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Galvanic replacement between metals has received notable research interest for the synthesis of heterometallic nanostructures. The growth pattern of the nanostructures depends on several factors such as extent of lattice mismatch, adhesive interaction between the metals, cohesive forces of the individual metals, etc. Due to the difficulties in probing ultrafast kinetics of the galvanic replacement reaction and particle growth in solution, real-time mechanistic investigations are often limited. As a result, the growth mechanism of one metal on the surface of another metal at the nanoscale is poorly understood so far. In the present work, we could successfully probe the galvanic replacement of silver ions with nickel nanoparticles, stabilized in a polymer membrane, using two complementary methods, namely, small-angle X-ray scattering (SAXS) and radiolabeling, and the results are supported by density functional theory (DFT) computations. The silver-nickel system has been chosen for the present investigation because of the high degree of bulk immiscibility caused by the large lattice mismatch (15.9%) and the weak adhesive interaction, which makes it a perfect model system for immiscible metal pairs. Membrane, as a host medium, plays a crucial role in retarding the kinetics of atomic and particle rearrangements (nucleation and growth) due to slower mobility of the atoms (monomers) and particles within the polymer network. This allowed us to examine the real-time concentration of silver monomers during galvanic replacement of silver ions with nickel nanoparticles and evolution of Ni/Ag nanoparticles. From combined experiment and DFT computations, it has been demonstrated, for the first time to the best of our knowledge, that the majority of silver atoms, which are produced on the nickel nanoparticle surface by galvanic reactions, do not form traditional core-shell nanostructures with nickel and undergo a self-governing sequential nucleation and growth of silver nanoparticles via formation of intermediate prenucleation silver clusters, leading to the formation of mixed metallic nanoparticles in the membrane. The surface of NiNPs has a heterogeneous effect on the silver nucleation pathway, which is evident from the reduced critical free energy barrier of nucleation (ΔGcrit). The present work establishes an original mechanistic pathway based on a sequential nucleation model for formation of mixed metallic nanoparticles by the galvanic replacement route, which opens up future possibilities for size-controlled synthesis in mixed systems.
Collapse
Affiliation(s)
- Nikita G Gaidhani
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Department of Chemistry, Sandip University, Nashik 422213, Maharashtra, India
| | - Sabyasachi Patra
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Hemant S Chandwadkar
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Department of Chemistry, Sandip University, Nashik 422213, Maharashtra, India
| | - Debasis Sen
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Chiranjib Majumder
- Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Shobha V Ramagiri
- Department of Chemical Engineering, IIT Bombay, Powai, Mumbai 400076, India
| | - Jayesh R Bellare
- Department of Chemical Engineering, IIT Bombay, Powai, Mumbai 400076, India
| |
Collapse
|
15
|
Nanba Y, Koyama M. An Element-Based Generalized Coordination Number for Predicting the Oxygen Binding Energy on Pt 3M (M = Co, Ni, or Cu) Alloy Nanoparticles. ACS OMEGA 2021; 6:3218-3226. [PMID: 33553938 PMCID: PMC7860238 DOI: 10.1021/acsomega.0c05649] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
We studied the binding energies of O species on face-centered-cubic Pt3M nanoparticles (NPs) with a Pt-skin layer using density functional theory calculations, where M is Co, Ni, or Cu. It is desirable to express the property by structural parameters rather than by calculated electronic structures such as the d-band center. A generalized coordination number (GCN) is an effective descriptor to predict atomic or molecular adsorption energy on Pt-NPs. The GCN was extended to the prediction of highly active sites for oxygen reduction reaction. However, it failed to explain the O binding energies on Pt-skin Pt150M51-NPs. In this study, we introduced an element-based GCN, denoted as GCNA-B, and considered it as a descriptor for supervised learning. The obtained regression coefficients of GCNPt-Pt were smaller than those of the other GCNA-B. With increasing M atoms in the subsurface layer, GCNPt-M, GCNM-Pt, and GCNM-M increased. These factors could reproduce the calculated result that the O binding energies of the Pt-skin Pt150M51-NPs were less negative than those of the Pt201-NPs. Thus, GCNA-B explains the ligand effect of the O binding energy on the Pt-skin Pt150M51-NPs.
Collapse
Affiliation(s)
- Yusuke Nanba
- Research Initiative
for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano, Nagano 380-8553, Japan
| | - Michihisa Koyama
- Research Initiative
for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano, Nagano 380-8553, Japan
| |
Collapse
|
16
|
Pt Nanoclusters Anchored on Hollow Ag-Au Nanostructures for Electrochemical Oxidation of Methanol. Catalysts 2020. [DOI: 10.3390/catal10121440] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The synthetic method of Pt nanocluster-anchored hollow Ag-Au nanostructures and measurements of their electrocatalytic properties for methanol oxidation reaction (MOR) are reported here. In this synthesis, uniform Ag nanospheres were prepared by reduction of silver nitrate (AgNO3) with sodium borohydride (NaBH4) and then hollow Ag-Au nanostructures were synthesized via galvanic replacement of the as-prepared Ag nanospheres with Au3+. Finally, the reduction of potassium tetrachloroplatinate (II) (K2PtCl4) with ascorbic acid was performed to deposit Pt nanoclusters on the surface of hollow Ag-Au nanostructures. The hollow interior of Pt nanocluster-anchored Ag-Au nanostructures and change in the size of Pt nanoclusters by varying the injected molar ratio of Pt/Au were observed by transmission electron microscopy (TEM). Moreover, other morphological, compositional, and optical information of the obtained nanoscale materials were analyzed by X-ray diffraction analysis (XRD), inductively coupled plasma mass spectrometry (ICP-MS), and ultraviolet-visible spectroscopy (UV-vis). The electrocatalytic ability of the obtained Pt nanocluster-anchored hollow Ag-Au nanostructures toward MOR was confirmed by the results of cyclic voltametric (CV) measurements. The ease of three-step synthetic strategy and good electrocatalytic performance of the Pt nanocluster-anchored hollow Ag-Au nanostructures displayed their promising potential in the use of electrochemical oxidation of methanol.
Collapse
|
17
|
Oladipo AO, Nkambule TTI, Mamba BB, Msagati TAM. Therapeutic nanodendrites: current applications and prospects. NANOSCALE ADVANCES 2020; 2:5152-5165. [PMID: 36132031 PMCID: PMC9417514 DOI: 10.1039/d0na00672f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/03/2020] [Indexed: 05/04/2023]
Abstract
Multidisciplinary efforts in the field of nanomedicine for cancer therapy to provide solutions to common limitations of traditional drug administration such as poor bioaccumulation, hydrophobicity, and nonspecific biodistribution and targeting have registered very promising progress thus far. Currently, a new class of metal nanostructures possessing a unique dendritic-shaped morphology has been designed for improved therapeutic efficiency. Branched metal nanoparticles or metal nanodendrites are credited to present promising characteristics for biomedical applications owing to their unique physicochemical, optical, and electronic properties. Nanodendrites can enhance the loading efficiency of bioactive molecules due to their three-dimensional (3D) high surface area and can selectively deliver their cargo to tumor cells using their stimuli-responsive properties. With the ability to accumulate sufficiently within cells, nanodendrites can overcome the detection and clearance by glycoproteins. Moreover, active targeting ligands such as antibodies and proteins can as well be attached to these therapeutic nanodendrites to enhance specific tumor targeting, thereby presenting a multifunctional nanoplatform with tunable strategies. This mini-review focuses on recent developments in the understanding of metallic nanodendrite synthesis, formation mechanism, and their therapeutic capabilities for next-generation cancer therapy. Finally, the challenges and future opportunities of these fascinating materials to facilitate extensive research endeavors towards the design and application were discussed.
Collapse
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
| | - 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
| |
Collapse
|
18
|
Tu K, Tranca D, Rodríguez-Hernández F, Jiang K, Huang S, Zheng Q, Chen MX, Lu C, Su Y, Chen Z, Mao H, Yang C, Jiang J, Liang HW, Zhuang X. A Novel Heterostructure Based on RuMo Nanoalloys and N-doped Carbon as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2005433. [PMID: 33063406 DOI: 10.1002/adma.202005433] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Indexed: 05/27/2023]
Abstract
Heterostructures exhibit considerable potential in the field of energy conversion due to their excellent interfacial charge states in tuning the electronic properties of different components to promote catalytic activity. However, the rational preparation of heterostructures with highly active heterosurfaces remains a challenge because of the difficulty in component tuning, morphology control, and active site determination. Herein, a novel heterostructure based on a combination of RuMo nanoalloys and hexagonal N-doped carbon nanosheets is designed and synthesized. In this protocol, metal-containing anions and layered double hydroxides are employed to control the components and morphology of heterostructures, respectively. Accordingly, the as-made RuMo-nanoalloys-embedded hexagonal porous carbon nanosheets are promising for the hydrogen evolution reaction (HER), resulting in an extremely small overpotential (18 mV), an ultralow Tafel slope (25 mV dec-1 ), and a high turnover frequency (3.57 H2 s-1 ) in alkaline media, outperforming current Ru-based electrocatalysts. First-principle calculations based on typical 2D N-doped carbon/RuMo nanoalloys heterostructures demonstrate that introducing N and Mo atoms into C and Ru lattices, respectively, triggers electron accumulation/depletion regions at the heterosurface and consequently reduces the energy barrier for the HER. This work presents a convenient method for rational fabrication of carbon-metal heterostructures for highly efficient electrocatalysis.
Collapse
Affiliation(s)
- Kejun Tu
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Diana Tranca
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | | | - Kaiyue Jiang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Senhe Huang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Qi Zheng
- School of Materials Science and Engineering, Southeast University, 2 Dongnan University RD., Nanjing, Jiangsu, 211189, China
| | - Ming-Xi Chen
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, 96 Jintai RD., Hefei, Anhui, 230026, China
| | - Chenbao Lu
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Yuezeng Su
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Zhenying Chen
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
- College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan, 450001, China
| | - Haiyan Mao
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA
- College of Materials Science and Engineering, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Chongqing Yang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| | - Jinyang Jiang
- School of Materials Science and Engineering, Southeast University, 2 Dongnan University RD., Nanjing, Jiangsu, 211189, China
| | - Hai-Wei Liang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemistry, University of Science and Technology of China, 96 Jintai RD., Hefei, Anhui, 230026, China
| | - Xiaodong Zhuang
- The Meso-Entropy Matter Lab, State Key Laboratory of Metal Matrix Composites, Shanghai Key Laboratory of Electrical Insulation and Thermal Aging, School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan RD., Shanghai, 200240, China
| |
Collapse
|
19
|
Xie R, Batchelor‐McAuley C, Rauwel E, Rauwel P, Compton RG. Electrochemical Characterisation of Co@Co(OH)
2
Core‐Shell Nanoparticles and their Aggregation in Solution. ChemElectroChem 2020. [DOI: 10.1002/celc.202001199] [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)
- Ruo‐Chen Xie
- Department of Chemistry Physical and Theoretical Chemistry Laboratory University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Christopher Batchelor‐McAuley
- Department of Chemistry Physical and Theoretical Chemistry Laboratory University of Oxford South Parks Road Oxford OX1 3QZ UK
| | - Erwan Rauwel
- Institute of Technology Estonian University of Life Sciences Kreutzwaldi 1 51014 T artu Estonia
- School of Engineering Tallinn University of Technology Akadeemia tee 15 12618 Tallinn Estonia
| | - Protima Rauwel
- Institute of Technology Estonian University of Life Sciences Kreutzwaldi 1 51014 T artu Estonia
| | - Richard G. Compton
- Department of Chemistry Physical and Theoretical Chemistry Laboratory University of Oxford South Parks Road Oxford OX1 3QZ UK
| |
Collapse
|
20
|
Lyu J, Geertsen V, Hamon C, Constantin D. Determining the morphology and concentration of core-shell Au/Ag nanoparticles. NANOSCALE ADVANCES 2020; 2:4522-4528. [PMID: 36132918 PMCID: PMC9419198 DOI: 10.1039/d0na00629g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/01/2020] [Indexed: 06/16/2023]
Abstract
Accurately measuring the shape, structure and concentration of nanoparticles (NPs) is a crucial step towards understanding their formation and a prerequisite for any applications. While determining these parameters for single-metal NPs is by now rather routine, reliably characterizing bimetallic NPs is still a challenge. Using four complementary techniques: transmission electron microscopy (TEM), light absorbance spectroscopy (AS), small-angle X-ray scattering (SAXS) and inductively coupled plasma mass spectrometry (ICP-MS) we study bimetallic nanoparticles obtained by growing a silver shell on top of a gold seed. The initial quasi-spherical objects become faceted and grow into a rounded cube as the molar silver-to-gold ratio K increases. The shape evolution is well described by SAXS and TEM. The shell thickness, overall size polydispersity and number particle concentration obtained by the various methods are in good agreement, validating the use of non-invasive in situ techniques such as AS and SAXS for the study of bimetallic NPs.
Collapse
Affiliation(s)
- Jieli Lyu
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides 91405 Orsay France
| | - Valérie Geertsen
- Université Paris-Saclay, CEA, CNRS, NIMBE 91190 Gif-sur-Yvette France
| | - Cyrille Hamon
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides 91405 Orsay France
| | - Doru Constantin
- Université Paris-Saclay, CNRS, Laboratoire de Physique des Solides 91405 Orsay France
| |
Collapse
|
21
|
Shin H, Jung WG, Kim DH, Jang JS, Kim YH, Koo WT, Bae J, Park C, Cho SH, Kim BJ, Kim ID. Single-Atom Pt Stabilized on One-Dimensional Nanostructure Support via Carbon Nitride/SnO 2 Heterojunction Trapping. ACS NANO 2020; 14:11394-11405. [PMID: 32833436 DOI: 10.1021/acsnano.0c03687] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Catalysis with single-atom catalysts (SACs) exhibits outstanding reactivity and selectivity. However, fabrication of supports for the single atoms with structural versatility remains a challenge to be overcome, for further steps toward catalytic activity augmentation. Here, we demonstrate an effective synthetic approach for a Pt SAC stabilized on a controllable one-dimensional (1D) metal oxide nano-heterostructure support, by trapping the single atoms at heterojunctions of a carbon nitride/SnO2 heterostructure. With the ultrahigh specific surface area (54.29 m2 g-1) of the nanostructure, we obtained maximized catalytic active sites, as well as further catalytic enhancement achieved with the heterojunction between carbon nitride and SnO2. X-ray absorption fine structure analysis and HAADF-STEM analysis reveal a homogeneous atomic dispersion of Pt species between carbon nitride and SnO2 nanograins. This Pt SAC system with the 1D nano-heterostructure support exhibits high sensitivity and selectivity toward detection of formaldehyde gas among state-of-the-art gas sensors. Further ex situ TEM analysis confirms excellent thermal stability and sinter resistance of the heterojunction-immobilized Pt single atoms.
Collapse
Affiliation(s)
- Hamin Shin
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Wan-Gil Jung
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Dong-Ha Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Ji-Soo Jang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yoon Hwa Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Won-Tae Koo
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jaehyeong Bae
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Chungseong Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Su-Ho Cho
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Bong Joong Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| |
Collapse
|
22
|
Zhou M, Li C, Fang J. Noble-Metal Based Random Alloy and Intermetallic Nanocrystals: Syntheses and Applications. Chem Rev 2020; 121:736-795. [DOI: 10.1021/acs.chemrev.0c00436] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ming Zhou
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Can Li
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Jiye Fang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| |
Collapse
|
23
|
Lin G, Wang Y, Hong J, Suenaga K, Liu L, Chang LY, Pao CW, Zhang T, Zhao W, Huang F, Yang M, Sun YY, Wang J. Nanoheterostructures of Partially Oxidized RuNi Alloy as Bifunctional Electrocatalysts for Overall Water Splitting. CHEMSUSCHEM 2020; 13:2739-2744. [PMID: 32187860 DOI: 10.1002/cssc.202000213] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/15/2020] [Indexed: 06/10/2023]
Abstract
Electrocatalytic water splitting, as one of the most promising methods to store renewable energy generated by intermittent sources, such as solar and wind energy, has attracted tremendous attention in recent years. Developing efficient, robust, and green catalysts for the hydrogen and oxygen evolution reactions (HER and OER) is of great interest. This study concerns a facile and green approach for producing RuNi/RuNi oxide nanoheterostructures by controllable partial oxidation of RuNi nanoalloy, which is characterized and confirmed by various techniques, including high-resolution transmission electron microscopy and synchrotron-based X-ray absorption spectroscopy. This nanoheterostructure demonstrates outstanding bifunctional activities for catalyzing the HER and OER with overpotentials that are both among the lowest reported values. In a practical alkali-water-splitting electrolyzer, it also achieves a record-low cell voltage of 1.42 V at 10 mA cm-2 , which is significantly superior to the commercial RuO2 //Pt/C couple and other reported bifunctional water-splitting electrocatalysts. Density functional theory calculations are employed to elaborate the effect of Ni incorporation. This simple catalyst preparation approach is expected to be transferrable to other electrocatalytic reactions.
Collapse
Affiliation(s)
- Gaoxin Lin
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yuandong Wang
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jinhua Hong
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Kazu Suenaga
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Lijia Liu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Lo-Yueh Chang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, Suzhou, 215123, Jiangsu, China
- National Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Chih-Wen Pao
- National Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, Taiwan
| | - Tao Zhang
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Wei Zhao
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Fuqiang Huang
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
- State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Minghui Yang
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, 315201, China
| | - Yi-Yang Sun
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jiacheng Wang
- State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China
| |
Collapse
|
24
|
Zhao Q, Wang C, Wang H, Wang J, Tang Y, Mao Z, Sasaki K. Synthesis of a high-performance low-platinum PtAg/C alloyed oxygen reduction catalyst through the gradual reduction method. NEW J CHEM 2020. [DOI: 10.1039/c9nj06156h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A low-platinum PtAg/C catalyst with excellent ORR activity and durability in acid is demonstrated to be promising for ORR catalysis.
Collapse
Affiliation(s)
- Qing Zhao
- Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology
- INET
- Tsinghua University
- Beijing
- P. R. China
| | - Cheng Wang
- Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology
- INET
- Tsinghua University
- Beijing
- P. R. China
| | | | - Jianlong Wang
- Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology
- INET
- Tsinghua University
- Beijing
- P. R. China
| | - Yaping Tang
- Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology
- INET
- Tsinghua University
- Beijing
- P. R. China
| | - Zongqiang Mao
- Zhang Jiagang Joint Institute for Hydrogen Energy and Lithium-Ion Battery Technology
- INET
- Tsinghua University
- Beijing
- P. R. China
| | | |
Collapse
|
25
|
Huang B, He Y, Wang Z, Zhu Y, Zhang Y, Cen K. Ru@Pt/C core-shell catalyst for SO2 electrocatalytic oxidation in electrochemical Bunsen reaction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
26
|
Recent Novel Hybrid Pd–Fe3O4 Nanoparticles as Catalysts for Various C–C Coupling Reactions. Processes (Basel) 2019. [DOI: 10.3390/pr7070422] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The use of nanostructure materials as heterogeneous catalysts in the synthesis of organic compounds have been receiving more attention in the rapid developing area of nanotechnology. In this review, we mainly focused on our own work on the synthesis of hybrid palladium–iron oxide nanoparticles. We discuss the synthesis of Pd–Fe3O4—both morphology-controlled synthesis of Pd–Fe3O4 and transition metal-loaded Pd–Fe3O4—as well as its application in various C–C coupling reactions. In the case of rose-like Pd–Fe3O4 hybrid nanoparticles, thermal decomposition can be used instead of oxidants or reductants, and morphology can be easily controlled. We have developed a method for the synthesis of nanoparticles that is facile and eco-friendly. The catalyst was recyclable for up to five continual cycles without significant loss of catalytic activity and may provide a great platform as a catalyst for other organic reactions in the near future.
Collapse
|
27
|
Li L, Li X, Duan Z, Meyer RJ, Carr R, Raman S, Koziol L, Henkelman G. Adaptive kinetic Monte Carlo simulations of surface segregation in PdAu nanoparticles. NANOSCALE 2019; 11:10524-10535. [PMID: 31116210 DOI: 10.1039/c9nr01858a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Surface segregation in bimetallic nanoparticles (NPs) is critically important for their catalytic activity because the activity is largely determined by the surface composition. Little, however, is known about the atomic scale mechanisms and kinetics of surface segregation. One reason is that it is hard to resolve atomic rearrangements experimentally. It is also difficult to model surface segregation at the atomic scale because the atomic rearrangements can take place on time scales of seconds or minutes - much longer than can be modeled with molecular dynamics. Here we use the adaptive kinetic Monte Carlo (AKMC) method to model the segregation dynamics in PdAu NPs over experimentally relevant time scales, and reveal the origin of kinetic stability of the core@shell and random alloy NPs at the atomic level. Our focus on PdAu NPs is motivated by experimental work showing that both core@shell and random alloy PdAu NPs with diameters of less than 2 nm are stable, indicating that one of these structures must be metastable and kinetically trapped. Our simulations show that both the Au@Pd and the PdAu random alloy NPs are metastable and kinetically trapped below 400 K over time scales of hours. These AKMC simulations provide insight into the energy landscape of the two NP structures, and the diffusion mechanisms that lead to segregation. In the core-shell NP, surface segregation occurs primarily on the (100) facet through both a vacancy-mediated and a concerted mechanism. The system becomes kinetically trapped when all corner sites in the core of the NP are occupied by Pd atoms. Higher energy barriers are required for further segregation, so that the metastable NP has a partially alloyed shell. In contrast, surface segregation in the random alloy PdAu NP is suppressed because the random alloy NP has reduced strain as compared to the Au@Pd NP, and the segregation mechanisms in the alloy require more elastic energy for exchange of Pd and Au and between the surface and subsurface.
Collapse
Affiliation(s)
- Lei Li
- Department of Chemistry and the Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, Texas 78712-0231, USA.
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Sprodowski C, Morgenstern K. Altering the stability of nanoislands through core-shell supports. NANOSCALE 2019; 11:10314-10319. [PMID: 31099811 DOI: 10.1039/c9nr00529c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We follow the decay of two-dimensional Ag nanoclusters, called islands, on Cu-Ag core-shell supports by variable low temperature scanning tunneling microscopy in the temperature range between 160 and 260 K. We reveal two qualitatively different types of decay mechanisms, either linear in time, indicative of an interface-limited decay, or non-linear in time, indicative of diffusion-limited decay. In contrast to conventional decay on monometallic supports, the decay exponent of the diffusion-limited decay depends on temperature; it varies by one order of magnitude. Moreover, the decay rate decreases with increasing temperature. This unusual behaviour is traced back to the temperature-dependent shell of the core-shell support.
Collapse
Affiliation(s)
- Carsten Sprodowski
- Leibniz Universität Hannover, Institut für Festkörperphysik, Appelstr. 2, D-30167 Hannover, Germany
| | | |
Collapse
|
29
|
Darabdhara G, Das MR. Dual responsive magnetic Au@Ni nanostructures loaded reduced graphene oxide sheets for colorimetric detection and photocatalytic degradation of toxic phenolic compounds. JOURNAL OF HAZARDOUS MATERIALS 2019; 368:365-377. [PMID: 30690389 DOI: 10.1016/j.jhazmat.2019.01.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 01/02/2019] [Accepted: 01/06/2019] [Indexed: 06/09/2023]
Abstract
We report the colorimetric detection and photocatalytic degradation of toxic phenolic compounds using Au@Ni loaded reduced graphene oxide (rGO) nanostructures. Core-shell nanoparticles of Au and Ni are successfully designed on rGO with size <8 nm by a solvothermal route which demonstrate excellent enzyme mimic behaviour towards the oxidation of 3,3',5,5' tetramethylbenzidine (TMB), a peroxidase substrate and towards colorimetric detection of phenols with detection limit as low as 1.68 μM, wide detection range of 1-300 μM and admirable selectivity. Additionally, the Au@Ni/rGO nanocomposite exhibits excellent photo responsive behaviour towards degradation of phenol, 2-chlorophenol (2-CP) and 2-nitrophenol (2-NP) under natural sunlight irradiation with more than 87% degradation. The superiority of the bimetallic nanocomposite is established by comparing its activity to its monometallic counterparts. The sustainability of the nanocomposite is assessed through the reusability in the photocatalytic reaction upto six consecutive cycles without significant loss in activity. This is the first study where nanomaterials are used for both detection and degradation of environmental pollutants with positive and encouraging results.
Collapse
Affiliation(s)
- Gitashree Darabdhara
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, 785006, Assam, India; Academy of Scientific and Innovative Research, CSIR-NEIST Campus, India
| | - Manash R Das
- Advanced Materials Group, Materials Sciences and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat, 785006, Assam, India; Academy of Scientific and Innovative Research, CSIR-NEIST Campus, India.
| |
Collapse
|
30
|
The potential of zero total charge and electrocatalytic properties of Ru@Pt core-shell nanoparticles. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2018.11.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
31
|
PdRu alloy nanoparticles of solid solution in atomic scale: Size effects on electronic structure and catalytic activity towards electrooxidation of formic acid and methanol. J Catal 2018. [DOI: 10.1016/j.jcat.2018.05.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
32
|
|
33
|
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
| |
Collapse
|
34
|
El Sawy EN, Birss VI. Nanoengineered Ir core@Pt shell Nanoparticles with Controlled Pt Shell Coverages for Direct Methanol Electro-Oxidation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:3459-3469. [PMID: 29302959 DOI: 10.1021/acsami.7b13080] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The design and application of bimetallic alloy nanoparticles (NPs) for electrocatalytic applications are challenged by the need to clearly identify and understand the individual effect of each component. In the present work, the focus has been on PtIr NPs, with alloyed NPs being previously shown to be active toward the methanol oxidation reaction (MOR), but for which the mode of action of the Ir component remains uncertain. We have therefore nanoengineered a family of Ircore@Ptshell NPs, using a modified polyol method, to control the Pt shell coverage (up to 2 monolayers) and thus to allow the separation of the bifunctional and electronic effects of Ir on the Pt activity. It is shown that the Ir core size and crystallinity do not change with the deposition of the Pt shell, as confirmed by transmission electron microscopy and X-ray diffraction. CO stripping and hydrogen underpotential deposition/removal were used for the first time to determine the surface composition of the Ircore@Ptshell NPs. It is shown that the Ircore enhances the MOR activity of the Ptshell primarily through the bifunctional effect, with an optimum Pt coverage of 0.4 of a monolayer. At 60 °C, an additional electronic effect of Ir on Pt can be discerned, causing an inhibition in the MOR rate by weakening the adsorption of methanol on the Ptshell, thus helping to remove the adsorbed CO intermediate from the shell surface.
Collapse
Affiliation(s)
- Ehab N El Sawy
- Department of Chemistry, University of Calgary , 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Viola I Birss
- Department of Chemistry, University of Calgary , 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
35
|
M. da Silva KI, Bernardi F, Abarca G, Baptista DL, Leite Santos MJ, Fernández Barquín L, Dupont J, de Pedro I. Tuning the structure and magnetic behavior of Ni–Ir-based nanoparticles in ionic liquids. Phys Chem Chem Phys 2018; 20:10247-10257. [DOI: 10.1039/c8cp00164b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report on a simple preparation of extremely small diameter (ca. 2 nm) Ni–Ir-based NPs with either core–shell like or alloy-like microstructures.
Collapse
Affiliation(s)
| | | | - Gabriel Abarca
- Centro de Nanotecnología Aplicada
- Facultad de Ciencias
- Universidad Mayor
- Chile
| | | | | | | | - Jairton Dupont
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - Imanol de Pedro
- CITIMAC
- Facultad de Ciencias
- Universidad de Cantabria
- 39005 Santander
- Spain
| |
Collapse
|
36
|
Cong C, Nakayama S, Maenosono S, Harada M. Microwave-Assisted Polyol Synthesis of Pt/Pd and Pt/Rh Bimetallic Nanoparticles in Polymer Solutions Prepared by Batch and Continuous-Flow Processing. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03154] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cong Cong
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Sayaka Nakayama
- Department
of Health Science and Clothing Environment, Faculty of Human Life
and Environment, Nara Women’s University, Nara 630-8506, Japan
| | - Shinya Maenosono
- School of
Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Masafumi Harada
- Department
of Health Science and Clothing Environment, Faculty of Human Life
and Environment, Nara Women’s University, Nara 630-8506, Japan
| |
Collapse
|
37
|
Akbarzadeh H, Abbaspour M, Mehrjouei E. Au@Pt and Pt@Au nanoalloys in the icosahedral and cuboctahedral structures: Which is more stable? J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.07.096] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
38
|
Castegnaro MV, Paschoalino WJ, Fernandes MR, Balke B, M Alves MC, Ticianelli EA, Morais J. Pd-M/C (M = Pd, Cu, Pt) Electrocatalysts for Oxygen Reduction Reaction in Alkaline Medium: Correlating the Electronic Structure with Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2734-2743. [PMID: 28241113 DOI: 10.1021/acs.langmuir.7b00098] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The increasing global needs for clean and renewable energy have fostered the design of new and highly efficient materials for fuel cells applications. In this work, Pd-M (M = Pd, Cu, Pt) and Pt nanoparticles were prepared by a green synthesis method. The carbon-supported nanoparticles were evaluated as electrocatalysts for the oxygen reduction reaction (ORR) in alkaline medium. A comprehensive electronic and structural characterization of these materials was achieved using X-ray diffraction, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy. Their electrochemical properties were investigated by cyclic voltammetry, while their activities for the ORR were characterized using steady-state polarization experiments. The results revealed that the bimetallic nanoparticles consist of highly crystalline nanoalloys with size around 5 nm, in which the charge transfer involving Pd and M atoms affects the activity of the electrocatalysts. Additionally, the samples with higher ORR activity are those whose d-band center is closer to the Fermi level.
Collapse
Affiliation(s)
- Marcus V Castegnaro
- Electron Spectroscopy Lab (LEe-), Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS) , Avenida Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS Brazil
| | | | - Mauro R Fernandes
- Instituto de Química de São Carlos (USP) , 13560-970 São Carlos, SP Brazil
| | - Benjamin Balke
- Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-Universität , 55099 Mainz, Germany
| | - Maria C M Alves
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS) , Avenida Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS Brazil
| | - Edson A Ticianelli
- Instituto de Química de São Carlos (USP) , 13560-970 São Carlos, SP Brazil
| | - Jonder Morais
- Electron Spectroscopy Lab (LEe-), Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS) , Avenida Bento Gonçalves, 9500, 91501-970 Porto Alegre, RS Brazil
| |
Collapse
|
39
|
Li WZ, Liu JX, Gu J, Zhou W, Yao SY, Si R, Guo Y, Su HY, Yan CH, Li WX, Zhang YW, Ma D. Chemical Insights into the Design and Development of Face-Centered Cubic Ruthenium Catalysts for Fischer–Tropsch Synthesis. J Am Chem Soc 2017; 139:2267-2276. [DOI: 10.1021/jacs.6b10375] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Wei-Zhen Li
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jin-Xun Liu
- Department
of Chemical Physics, College of Chemistry and Materials Science, iChEM,
CAS Center for Excellence in Nanoscience, Hefei National Laboratory
for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
- State
Key Laboratory of Catalysis, State Key Laboratory of Molecular Reaction
Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jun Gu
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Wu Zhou
- School
of Physical Sciences, CAS Key Laboratory of Vacuum Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Materials
Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Si-Yu Yao
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Rui Si
- Shanghai
Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Yu Guo
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Hai-Yan Su
- State
Key Laboratory of Catalysis, State Key Laboratory of Molecular Reaction
Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Chun-Hua Yan
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Wei-Xue Li
- Department
of Chemical Physics, College of Chemistry and Materials Science, iChEM,
CAS Center for Excellence in Nanoscience, Hefei National Laboratory
for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei 230026, China
- State
Key Laboratory of Catalysis, State Key Laboratory of Molecular Reaction
Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ya-Wen Zhang
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ding Ma
- Beijing
National Laboratory for Molecular Sciences (BNLMS), College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
40
|
A. Bharathan V, Jain R, Gopinath CS, Vinod CP. Diverse reactivity trends of Ni surfaces in Au@Ni core–shell nanoparticles probed by near ambient pressure (NAP) XPS. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01070b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mild temperature sequential reduction method in aqueous medium for the synthesis of Au@Ni nanoparticles with a core–shell morphology and its NAPXPS study under oxygen atmosphere is reported.
Collapse
Affiliation(s)
- Vysakh A. Bharathan
- Catalysis Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Ruchi Jain
- Catalysis Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Chinnakonda S. Gopinath
- Catalysis Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - C. P. Vinod
- Catalysis Division
- CSIR-National Chemical Laboratory
- Pune
- India
- Academy of Scientific and Innovative Research (AcSIR)
| |
Collapse
|
41
|
Weilhard A, Abarca G, Viscardi J, Prechtl MHG, Scholten JD, Bernardi F, Baptista DL, Dupont J. Challenging Thermodynamics: Hydrogenation of Benzene to 1,3-Cyclohexadiene by Ru@Pt Nanoparticles. ChemCatChem 2016. [DOI: 10.1002/cctc.201601196] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andreas Weilhard
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
- School of Chemistry; University of Nottingham; NG7 2RD Nottingham UK
| | - Gabriel Abarca
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
| | - Janine Viscardi
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
| | | | - Jackson D. Scholten
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
| | - Fabiano Bernardi
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
| | - Daniel L. Baptista
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
| | - Jairton Dupont
- Institute of Chemistry and Institute of Physics-UFRGS; Av. Bento Gonçalves, 9500 Porto Alegre 91501-970 RS Brazil
- School of Chemistry; University of Nottingham; NG7 2RD Nottingham UK
| |
Collapse
|
42
|
|
43
|
Otto T, Ramallo-López JM, Giovanetti LJ, Requejo FG, Zones SI, Iglesia E. Synthesis of stable monodisperse AuPd, AuPt, and PdPt bimetallic clusters encapsulated within LTA-zeolites. J Catal 2016. [DOI: 10.1016/j.jcat.2016.07.017] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
44
|
|
45
|
Microwave Assisted Polyol Synthesis of the Bimetallic RuRe Nanoparticles Deposited on γ-Alumina and their Application for the Light Alkane Oxidation. Top Catal 2016. [DOI: 10.1007/s11244-016-0610-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
46
|
Bharathan VA, Yadukiran V, Lazar A, Singh AP, Vinod CP. Synthesis of Au@Ni bimetallic core shell nanoparticle and nanochains in soyabean oil and their catalytic hydrogenation reactions. ChemistrySelect 2016. [DOI: 10.1002/slct.201500006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Vysakh A. Bharathan
- Catalysis Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune INDIA
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2 Rafi Marg, New Delhi Delhi 110001
| | - V. Yadukiran
- Catalysis Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune INDIA
| | - Anish Lazar
- Catalysis Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune INDIA
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2 Rafi Marg, New Delhi Delhi 110001
| | - Anand. P. Singh
- Catalysis Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune INDIA
| | - Chathakudath P. Vinod
- Catalysis Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune INDIA
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan; 2 Rafi Marg, New Delhi Delhi 110001
- Center of Excellence on Surface Science; CSIR-National Chemical Laboratory; Pune INDIA
| |
Collapse
|
47
|
Wu H, Liu H, Yang W, He D. Synergetic effect of Ni and Co in Ni–Co/SBA-15-CD catalysts and their catalytic performance in carbon dioxide reforming of methane to syngas. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00202a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
48
|
Herbert JJ, Senecal P, Martin DJ, Bras W, Beaumont SK, Beale AM. X-ray spectroscopic and scattering methods applied to the characterisation of cobalt-based Fischer–Tropsch synthesis catalysts. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00581k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This review aims to critically assess the use of X-ray techniques, both of a scattering (e.g. X-ray diffraction (XRD), pair distribution function (PDF)) and spectroscopic nature (X-ray absorption spectroscopy (XAFS)), in the study of cobalt-based Fisher–Tropsch synthesis (FTS) catalysts.
Collapse
Affiliation(s)
- Jennifer J. Herbert
- Department of Chemistry
- University College London
- London
- UK
- Research Complex at Harwell
| | - Pierre Senecal
- Department of Chemistry
- University College London
- London
- UK
- Research Complex at Harwell
| | - David J. Martin
- Department of Chemistry
- University College London
- London
- UK
- Research Complex at Harwell
| | - Wim Bras
- Netherlands Organisation for Scientific Research (NWO)
- DUBBLE CRG@ESRF
- Grenoble 38042
- France
| | | | - Andrew M. Beale
- Department of Chemistry
- University College London
- London
- UK
- Research Complex at Harwell
| |
Collapse
|
49
|
Becknell N, Kang Y, Chen C, Resasco J, Kornienko N, Guo J, Markovic NM, Somorjai GA, Stamenkovic VR, Yang P. Atomic Structure of Pt3Ni Nanoframe Electrocatalysts by in Situ X-ray Absorption Spectroscopy. J Am Chem Soc 2015; 137:15817-24. [DOI: 10.1021/jacs.5b09639] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Nigel Becknell
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Yijin Kang
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Chen Chen
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Joaquin Resasco
- Department
of Chemical Engineering, University of California, Berkeley, California 94720, United States
| | - Nikolay Kornienko
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
| | - Jinghua Guo
- The
Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nenad M. Markovic
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Gabor A. Somorjai
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Vojislav R. Stamenkovic
- Materials
Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Peidong Yang
- Department
of Chemistry, University of California, Berkeley, California 94720, United States
- Materials
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy Nanoscience Institute, Berkeley, California 94720, United States
| |
Collapse
|
50
|
Chaves AS, Piotrowski MJ, Guedes-Sobrinho D, Da Silva JLF. Theoretical Investigation of the Adsorption Properties of CO, NO, and OH on Monometallic and Bimetallic 13-Atom Clusters: The Example of Cu13, Pt7Cu6, and Pt13. J Phys Chem A 2015; 119:11565-73. [DOI: 10.1021/acs.jpca.5b08330] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anderson S. Chaves
- São
Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970, São Carlos, SP, Brazil
| | - Maurício J. Piotrowski
- Physics
Department, Federal University of Pelotas, P.O. Box 354, 96010-900, Pelotas, RS, Brazil
| | - Diego Guedes-Sobrinho
- São
Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970, São Carlos, SP, Brazil
| | - Juarez L. F. Da Silva
- São
Carlos Institute of Chemistry, University of São Paulo, P.O. Box 780, 13560-970, São Carlos, SP, Brazil
| |
Collapse
|