1
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Missier MS, Mahesh R, Dinesh SPS, Rajeshkumar S, Amalorpavam V. In-Vitro Cytotoxic Evaluation of Titanium Dioxide Nanoparticle Using L929 Cell Lines. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:S1468-S1473. [PMID: 38882869 PMCID: PMC11174319 DOI: 10.4103/jpbs.jpbs_824_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/01/2023] [Accepted: 10/05/2023] [Indexed: 06/18/2024] Open
Abstract
Tooth movement in orthodontic therapy is connected to the frictional force that is created as the wire passes over the bracket. It is possible for teeth to move quickly when friction is at a minimum. Wires coated with nanoparticles have been found to reduce friction as a result of current developments in the orthodontics sector. Having an antimicrobial property is an added benefit. To reduce the friction generated by brackets, wires, and bands by lessening their cytotoxicity, this study examines the potential use of TiO2 nanoparticles in orthodontics. A monolayer of L929 was utilized in an indirect cytotoxicity test to evaluate the cytotoxicity of the coated orthodontic wire. The absence of reactive zones in our sample data demonstrates that TiO2 is not cytotoxic. Considering the results of our study, we conclude that TiO2 is secure for use as a coating for orthodontic devices.
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Affiliation(s)
- Mary Sheloni Missier
- Department of Orthodontics, SIMATS, Saveetha University, Chennai, Tamil Nadu, India
| | - R Mahesh
- Department of Pedodontics, Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamil Nadu, India
| | - S P Saravana Dinesh
- Department of Pedodontics, Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamil Nadu, India
| | - S Rajeshkumar
- Department of Pharmacology, Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamil Nadu, India
| | - V Amalorpavam
- Department of Prosthodontics, Rajas Dental College and Hospital, Tirunelveli, Tamil Nadu, India
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2
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Zhang S, Wang R, Zhang X, Zhao H. Recent advances in single-atom alloys: preparation methods and applications in heterogeneous catalysis. RSC Adv 2024; 14:3936-3951. [PMID: 38288153 PMCID: PMC10823358 DOI: 10.1039/d3ra07029h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/05/2023] [Indexed: 01/31/2024] Open
Abstract
Single-atom alloys (SAAs) are a different type of alloy where a guest metal, usually a noble metal (e.g., Pt, Pd, and Ru), is atomically dispersed on a relatively more inert (e.g., Ag and Cu) host metal. As a type of atomic-scale catalyst, single-atom alloy catalysts have broad application prospects in the field of heterogeneous catalysis for hydrogenation, dehydrogenation, oxidation, and other reactions. Numerous experimental and characterization results and theoretical calculations have confirmed that the resultant electronic structure caused by charge transfer between the host metal and guest metal and the special geometric structure of the guest metal are responsible for the high selectivity and catalytic activity of SAA catalysts. In this review, the common methods for the preparation of single-atom alloys in recent years are introduced, including initial wet impregnation, physical vapor deposition, and laser ablation in liquid technique. Afterwards, the applications of single-atom alloy catalysts in selective hydrogenation, dehydrogenation, oxidation reactions, and hydrogenolysis reactions are emphatically reviewed. Finally, several challenges for the future development of SAA catalysts are proposed.
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Affiliation(s)
- Shuang Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University Beijing 100048 China
| | - Ruiying Wang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University Beijing 100048 China
| | - Xi Zhang
- College of Chemistry and Materials Engineering, Beijing Technology and Business University Beijing 100048 China
| | - Hua Zhao
- College of Chemistry and Materials Engineering, Beijing Technology and Business University Beijing 100048 China
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3
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Das A, Ding CF. Innovative Fabrication of Metal Alloy Structures via Laser-Induced Forward Transfer on Flexible Substrates. SMALL METHODS 2023:e2301429. [PMID: 38161252 DOI: 10.1002/smtd.202301429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/07/2023] [Indexed: 01/03/2024]
Abstract
Laser-induced forward transfer is a contactless, nozzle free process which enables accurate, precise and fast development of 3D structures. However, a number of shortcomings such as shockwave generation, poor adhesion to receiver substrates and uniform depositions limit LIFT to be utilized. Therefore, this research tends to put forward easy and effective solutions for successful mitigation of the LIFT limitations. Receiver surface modifications and low-pressure conditions are introduced through laser surface texturing (LST) and a vacuum pump. A number of textures and orientations are investigated for determining the optimal copper (Cu) deposition. Furthermore, utilization of the same laser system for LST enables the manufacturing process cost and time effective. In addition to Cu depositions, additive layers of silver (Ag) and platinum (Pt) are deposited. Finally, Ag and Pt micropillars are fabricated on their respective additive layers leading to formation of Cu-Ag and Cu-Pt alloys structure. Subsequently, electrical and material characterizations are made to validate for potential applications. Experimental evidence shows greater adhesion with electrical properties for LST-based LIFT in low pressure conditions. Finally, an energy analysis is performed based on theoretical and finite element methods (FEM) to gain greater insights into mechanics of the LIFT process.
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Affiliation(s)
- Ankit Das
- Department of Biomechatronics Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, 08544, USA
| | - Chien-Fang Ding
- Department of Biomechatronics Engineering, National Taiwan University, Taipei, 10617, Taiwan
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4
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Roshani M, Rezaian-Isfahni A, Lotfalizadeh MH, Khassafi N, Abadi MHJN, Nejati M. Metal nanoparticles as a potential technique for the diagnosis and treatment of gastrointestinal cancer: a comprehensive review. Cancer Cell Int 2023; 23:280. [PMID: 37981671 PMCID: PMC10657605 DOI: 10.1186/s12935-023-03115-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 10/27/2023] [Indexed: 11/21/2023] Open
Abstract
Gastrointestinal (GI) cancer is a major health problem worldwide, and current diagnostic and therapeutic approaches are often inadequate. Various metallic nanoparticles (MNPs) have been widely studied for several biomedical applications, including cancer. They may potentially overcome the challenges associated with conventional chemotherapy and significantly impact the overall survival of GI cancer patients. Functionalized MNPs with targeted ligands provide more efficient localization of tumor energy deposition, better solubility and stability, and specific targeting properties. In addition to enhanced therapeutic efficacy, MNPs are also a diagnostic tool for molecular imaging of malignant lesions, enabling non-invasive imaging or detection of tumor-specific or tumor-associated antigens. MNP-based therapeutic systems enable simultaneous stability and solubility of encapsulated drugs and regulate the delivery of therapeutic agents directly to tumor cells, which improves therapeutic efficacy and minimizes drug toxicity and leakage into normal cells. However, metal nanoparticles have been shown to have a cytotoxic effect on cells in vitro. This can be a concern when using metal nanoparticles for cancer treatment, as they may also kill healthy cells in addition to cancer cells. In this review, we provide an overview of the current state of the field, including preparation methods of MNPs, clinical applications, and advances in their use in targeted GI cancer therapy, as well as the advantages and limitations of using metal nanoparticles for the diagnosis and treatment of gastrointestinal cancer such as potential toxicity. We also discuss potential future directions and areas for further research, including the development of novel MNP-based approaches and the optimization of existing approaches.
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Affiliation(s)
- Mohammad Roshani
- Internal Medicine and Gastroenterology, Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Arya Rezaian-Isfahni
- Student Research Committee, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Negar Khassafi
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Hassan Jafari Najaf Abadi
- Research Center for Health Technology Assessment and Medical Informatics, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Majid Nejati
- Anatomical Sciences Research Center, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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5
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Nguyen HT, Bui HM. Bandgap tuning of TiO 2 by Cu nanoparticles applied in photocatalytic antifouling-coated PES membranes through PAA-plasma grafted adhesive layer. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2390-2405. [PMID: 37186638 PMCID: wst_2023_129 DOI: 10.2166/wst.2023.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
This study developed an antifouling coating for polyethersulfone (PES) membranes by tuning the bandgap of TiO2 with Cu nanoparticles (NPs) via a polyacrylic acid (PAA)-plasma-grafted intermediate layer. Cu NPs were synthesized at different molar ratios and precipitated onto TiO2 using the sol-gel method. The resulting Cu@TiO2 photocatalysts were characterized using various techniques, showing reduced bandgap, particle size range of 100-200 nm, and generation of reactive free radicals under light irradiation. The 25% Cu@TiO2 photocatalyst displayed the highest catalytic efficiency for Acid Blue 260 (AB260) degradation, achieving 73% and 96% with and without H2O2, respectively. Photocatalytic membranes based on this catalyst achieved an AB260 degradation efficiency of 91% and remained stable over five cycles. Additionally, sodium alginate-fouled photocatalytic membranes fully recovered water permeability after undergoing photocatalytic degradation of foulants. The modified membrane displayed a higher surface roughness due to the presence of photocatalyst particles. This study demonstrates the potential application of Cu@TiO2/PAA/PES photocatalytic membranes for mitigating membrane fouling in practice.
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Affiliation(s)
- Hieu Trung Nguyen
- Institute of Applied Technology, Thu Dau Mot University, 06 Tran Van On Street, Phu Hoa Ward, Thu Dau Mot City 750000, Binh Duong Province, Vietnam
| | - Ha Manh Bui
- Faculty of Environment, Saigon University, 273 An Duong Vuong Street, District 5, Ho Chi Minh City 700000, Vietnam E-mail:
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6
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Elabbadi M, Boukouvala C, Hopper ER, Asselin J, Ringe E. Synthesis of Controllable Cu Shells on Au Nanoparticles with Electrodeposition: A Systematic in Situ Single Particle Study. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:5044-5053. [PMID: 36960102 PMCID: PMC10026066 DOI: 10.1021/acs.jpcc.2c08910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/04/2023] [Indexed: 06/18/2023]
Abstract
Bimetallic Cu on Au nanoparticles with controllable morphology and optical properties were obtained via electrochemical synthesis. In particular, multilobed structures with good homogeneity were achieved through the optimization of experimental parameters such as deposition current, charge transfer, and metal ion concentration. A hyperspectral dark field scattering setup was used to characterize the electrodeposition on a single particle level, with changes in localized surface plasmon resonance frequency correlated with deposition charge transfer and amount of Cu deposited as determined by electron microscopy. This demonstrated the ability to tune morphology and spectra through electrochemical parameters alone. Time-resolved in situ measurements of single particle spectra were obtained, giving an insight into the kinetics of the deposition process. Nucleation of multiple cubes of Cu initially occurs preferentially on the tips of Au nanoparticles, before growing and coalescing to form a multilobed, lumpy shell. Modifying the surface of Au nanoparticles by plasma treatment resulted in thicker and more uniform Cu shells.
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Affiliation(s)
- Mohsen Elabbadi
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge, United Kingdom CB3 0FS
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom CB2 3EQ
| | - Christina Boukouvala
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge, United Kingdom CB3 0FS
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom CB2 3EQ
| | - Elizabeth R. Hopper
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge, United Kingdom CB3 0FS
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom CB2 3EQ
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, West Cambridge Site, Philippa Fawcett Drive, Cambridge, United Kingdom CB3 0AS
| | - Jérémie Asselin
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge, United Kingdom CB3 0FS
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom CB2 3EQ
| | - Emilie Ringe
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge, United Kingdom CB3 0FS
- Department
of Earth Sciences, University of Cambridge, Downing Street, Cambridge, United Kingdom CB2 3EQ
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7
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Wei M, Chen L, Wang X, Zhu A, Zhang Q, Liu Q. Tubular palladium-based catalysts enhancing direct ethanol electrooxidation. J Colloid Interface Sci 2023; 633:932-947. [PMID: 36509037 DOI: 10.1016/j.jcis.2022.11.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Direct ethanol fuel cell (DEFC) has the advantages of high power density, high energy conversion efficiency and environmental friendliness, but its commercialization is restricted by factors such as insufficient activity and low anti-poisoning ability of anode catalyst for incomplete oxidation of ethanol. It is of great significance to design and prepare anode catalyst with high activity and high anti-poisoning ability that can be recycled. In this work, tubular palladium-based (Pd-based) catalysts with abundant lattice defect sites were prepared by simple and reproducible electro-displacement reactions using Cu nanowires as sacrificial template. Pd is the main catalytic element which provides adsorption sites for ethanol oxidation. Ag and Cu introduced facilitates the formation of hydroxyl groups to oxidize toxicity intermediates, and changes the d-band center position of Pd, so as to adjust the adsorption and desorption of ethanol and its intermediates on the Pd surface. At the same time, Au introduced with high potential maintains the stability of the catalyst structure. The tubular structure exposes more active sites, improves the atomic utilization rate and enhances the ability of the catalyst resisting dissolution and aggregation. The series of PdAuAgCu tubular catalysts with outer layer dendrites were prepared by electro-displacement reactions using the mixture (ethylene glycol : ultra-pure water = 3 : 1) as the reaction solvent and fivefold twinned Cu nanowires as sacrificial template. The performance evaluation of ethanol electrocatalytic oxidation showed that the Pd17Au40Ag11Cu32 tubular catalysts were prepared at 120 °C and 10 mM CTAB had excellent overall performance, with a peak mass activity of 6335 mA mgPd-1, which was 9.6 times of Pd/C (JM). The residual current density after the stability test of 3000 s was 249 mA mgPd-1, which was 3.3 times of Pd/C (JM).
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Affiliation(s)
- Mingxin Wei
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Lianjin Chen
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Xiaosen Wang
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Aimei Zhu
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Qiugen Zhang
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
| | - Qinglin Liu
- Department of Chemical & Biochemical Engineering, College of Chemistry & Chemical Engineering, Xiamen University, Xiamen 361005, PR China.
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8
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Mary SM, Ramakrishnan M, Sudalaimani Paulpandian SD, Rajeshkumar S, Pringle J. Application of nanoparticles in Dentistry. Bioinformation 2023; 19:14-18. [PMID: 37720271 PMCID: PMC10504510 DOI: 10.6026/97320630019014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 09/19/2023] Open
Abstract
Nanoparticles(NPs) are of particle sizes lesser than 100nm and are insoluble the field which deal with the handling of these particles is coined as "Nanotechnology" as their particle size is smaller, they can penetrate easily therefore they are applied in various medical fields, drug delivery and in dentistry as they have antimicrobial property, reduces friction, anti-inflammatory and antioxidant property. Many studies have been done to evaluate its application and its cytotoxicity by varying its concentration and various studies have been done to evaluate its physical property. Therefore, it is of interest to describe concepts of nanoparticles, mode of action, tissue reaction and its application in orthodontics.
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Affiliation(s)
- Sheloni Missier Mary
- Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamilnadu, India
| | - Mahesh Ramakrishnan
- Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamilnadu, India
| | | | - Shanmugam Rajeshkumar
- Saveetha Dental College and Hospital, SIMATS, Saveetha University, Chennai, Tamilnadu, India
| | - Jebilla Pringle
- Department of Orthodontics, Rajas Dental College and Hospital, Kavalkinaru, Tamilnadu, India
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9
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Shimpi JR, Prasad BLV. Ligands as "Matchmakers": Alloying from a Physical Mixture of Metal Nanoparticle Dispersions by Digestive Ripening. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:15917-15924. [PMID: 36516882 DOI: 10.1021/acs.langmuir.2c01884] [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
Digestive ripening (DR) of a physical mixture of different metal nanoparticles (NPs) in the presence of a suitable ligand is demonstrated to be a convenient way to obtain alloy NPs. The results show that the right choice of metal-ligand combination is extremely important for efficient alloying. The results are rationalized on the basis of hard soft acid base principles, and it is concluded that better alloying ensues if DR is carried out with soft ligands when soft metals are being used and hard ligands facilitate alloying between hard metals. On the other hand, when a physical mixture of hard-soft metals is taken, ligands with intermediate character work better. The results presented here could prove to be extremely valuable and open new avenues of making interesting alloy/intermetallic systems.
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Affiliation(s)
- Jayesh R Shimpi
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Bhagavatula L V Prasad
- Physical and Materials Chemistry Division, National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
- Centre for Nano and Soft Matter Sciences, Arkavathi, Survey No.7 Shivanapura, Dasanapura Hobli, Bengaluru, Karnataka 562162, India
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10
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Zhou P, Li L, Mosali VSS, Chen Y, Luan P, Gu Q, Turner DR, Huang L, Zhang J. Electrochemical Hydrogenation of Furfural in Aqueous Acetic Acid Media with Enhanced 2-Methylfuran Selectivity Using CuPd Bimetallic Catalysts. Angew Chem Int Ed Engl 2022; 61:e202117809. [PMID: 35043530 DOI: 10.1002/anie.202117809] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Indexed: 12/22/2022]
Abstract
Herein, we report a series of CuPd catalysts for electrochemical hydrogenation (ECH) of furfural to 2-methylfuran (MF or FurCH3 where Fur=furyl) in aqueous 0.1 M acetic acid (pH 2.9). The highest faradaic efficiency (FE) for MF reached 75 % at -0.58 V vs. reversible hydrogen electrode with an average partial current density of 4.5 mA cm-2 . In situ surface-enhanced Raman spectroscopic and kinetic isotopic experiments suggested that electrogenerated adsorbed hydrogen (Hads ) was involved in the reaction and incorporation of Pd enhanced the surface coverage of Hads and optimized the adsorption pattern of furfural, leading to a higher FE for MF. Density functional theory calculations revealed that Pd incorporation reduced the energy barrier for the hydrogenation of FurCH2 * to FurCH3 *. Our study demonstrates that catalyst surface structure/composition plays a crucial role in determining the selectivity in ECH and provides a new strategy for designing advanced catalysts for ECH of bio-derived oxygenates.
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Affiliation(s)
- Peng Zhou
- School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
| | - Linbo Li
- School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
| | | | - Yu Chen
- Monash Center for Electron Microscopy, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
| | - Peng Luan
- School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
| | - Qinfen Gu
- Australian Synchrotron, ANSTO, 800 Blackburn Rd, Clayton, VIC 3168, Australia
| | - David R Turner
- School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
| | - Liang Huang
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Jie Zhang
- School of Chemistry, Monash University, Wellington Road, Clayton, 3800, Victoria, Australia
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11
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Shao F, Wang X, Zhao Z, Wei Z, Zhong X, Yao Z, Deng S, Wang S, Wang H, Li A, Wang J. Ru Cluster-Decorated Cu Nanoparticles Enhanced Selectivity to Imine from One-Pot Cascade Transformations. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fangjun Shao
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiaojian Wang
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zijiang Zhao
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zhongzhe Wei
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xing Zhong
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Zihao Yao
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Shenwei Deng
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Shibin Wang
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Hong Wang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Aiyuan Li
- Zhejiang Collaborative Innovation Center for High Value Utilization of byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo, Zhejiang 315800, P. R. China
| | - Jianguo Wang
- Institute of Industrial Catalysis, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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12
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Zhou P, Li L, Mosali VSS, Chen Y, Luan P, Gu Q, Turner DR, Huang L, Zhang J. Electrochemical Hydrogenation of Furfural in Aqueous Acetic Acid Media with Enhanced 2‐Methylfuran Selectivity Using CuPd Bimetallic Catalysts. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Peng Zhou
- School of Chemistry Monash University Wellington Road Clayton 3800 Victoria Australia
| | - Linbo Li
- School of Chemistry Monash University Wellington Road Clayton 3800 Victoria Australia
| | | | - Yu Chen
- Monash Center for Electron Microscopy Monash University Wellington Road Clayton 3800 Victoria Australia
| | - Peng Luan
- School of Chemistry Monash University Wellington Road Clayton 3800 Victoria Australia
| | - Qinfen Gu
- Australian Synchrotron, ANSTO 800 Blackburn Rd Clayton VIC 3168 Australia
| | - David R. Turner
- School of Chemistry Monash University Wellington Road Clayton 3800 Victoria Australia
| | - Liang Huang
- The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Wuhan 430081 China
| | - Jie Zhang
- School of Chemistry Monash University Wellington Road Clayton 3800 Victoria Australia
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13
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Zhang H, Yang X, Gao G, Yan J, Zhao M, Su H. An efficient catalyst of CuPt/TiO2 for photocatalytic direct dehydrogenation of methanol to methyl formate at ambient temperature. Catal Sci Technol 2022. [DOI: 10.1039/d1cy02020j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CuPt alloy nanoparticles on TiO2 are highly effective for photocatalytic direct dehydrogenation of methanol to methyl formate at ambient temperature.
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Affiliation(s)
- Haifeng Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
| | - Xuzhuang Yang
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
- Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Hohhot, Inner Mongolia, 010021, P. R. China
| | - Guanjun Gao
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
| | - Jingkai Yan
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
| | - Min Zhao
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
| | - Haiquan Su
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010021, P. R. China
- Inner Mongolia Key Lab of Rare Earth Materials Chemistry and Physics, Hohhot, Inner Mongolia, 010021, P. R. China
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14
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Gram-Scale Synthesis of CoO/C as Base for PtCo/C High-Performance Catalysts for the Oxygen Reduction Reaction. Catalysts 2021. [DOI: 10.3390/catal11121539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The composition, structure, catalytic activity in the ORR and stability of PtCo/C materials, obtained in two stages and compared with commercial Pt/C analogs, were studied. At the first stage of the synthesis performed by electrodeposition of cobalt on a carbon support, a CoOx/C composite containing 8% and 25 wt% cobalt oxide was successfully obtained. In the second step, PtCoOx/C catalysts of Pt1.56Co and Pt1.12Co composition containing 14 and 30 wt% Pt, respectively, were synthesized based on the previously obtained composites. According to the results of the composition and structure analysis of the obtained PtCoOx/C catalysts by X-ray diffraction (XRD), X-ray fluorescence analysis (XRF), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) methods, the formation of small bimetallic nanoparticles on the carbon support surface has been proved. The resulting catalysts demonstrated up to two times higher specific catalytic activity in the ORR and high stability compared to commercial Pt/C analogs.
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Lee DW, Woo HY, Lee DHD, Jung MC, Lee D, Lee M, Kim JB, Chae JY, Han MJ, Paik T. N,N-Dimethylformamide-Assisted Shape Evolution of Highly Uniform and Shape-Pure Colloidal Copper Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2103302. [PMID: 34468086 DOI: 10.1002/smll.202103302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/18/2021] [Indexed: 06/13/2023]
Abstract
In this paper, the N,N-dimethylformamide (DMF)-assisted shape evolution of highly uniform and shape-pure copper nanocrystals (Cu NCs) is presented for the first time. Colloidal Cu NCs are synthesized via the disproportionation reaction of copper (I) bromide in the presence of a non-polar solvent mixture. It is observed that the shape of Cu NCs is systematically controlled by the addition of different amounts of DMF to the reaction mixture in high-temperature reaction conditions while maintaining a high size uniformity and shape purity. With increasing amount of DMF in the reaction mixture, the morphology of the Cu NCs change from a cube enclosed by six {100} facets, to a sphere with mixed surface facets, and finally, to an octahedron enclosed by eight {111} facets. The origin of this shape evolution is understood via first-principles density functional theory calculations, which allows the study of the change in the relative surface stability according to surface-coordinating adsorbates. Further, the shape-dependent plasmonic properties are systematically investigated with highly uniform and ligand-exchanged colloidal Cu NCs dispersed in acetonitrile. Finally, the facet-dependent electrocatalytic activities of the shape-controlled Cu NCs are investigated to reveal the activities of the highly uniform and shape-pure Cu NCs in the methanol oxidation reaction.
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Affiliation(s)
- Da Won Lee
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ho Young Woo
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Dong Hyun David Lee
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Myung-Chul Jung
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Donguk Lee
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - MinJi Lee
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jong Bae Kim
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ji Yeon Chae
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Myung Joon Han
- Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, Republic of Korea
| | - Taejong Paik
- School of Integrative Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
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16
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Li G, Zhang W, Luo N, Xue Z, Hu Q, Zeng W, Xu J. Bimetallic Nanocrystals: Structure, Controllable Synthesis and Applications in Catalysis, Energy and Sensing. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1926. [PMID: 34443756 PMCID: PMC8401639 DOI: 10.3390/nano11081926] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 12/12/2022]
Abstract
In recent years, bimetallic nanocrystals have attracted great interest from many researchers. Bimetallic nanocrystals are expected to exhibit improved physical and chemical properties due to the synergistic effect between the two metals, not just a combination of two monometallic properties. More importantly, the properties of bimetallic nanocrystals are significantly affected by their morphology, structure, and atomic arrangement. Reasonable regulation of these parameters of nanocrystals can effectively control their properties and enhance their practicality in a given application. This review summarizes some recent research progress in the controlled synthesis of shape, composition and structure, as well as some important applications of bimetallic nanocrystals. We first give a brief introduction to the development of bimetals, followed by the architectural diversity of bimetallic nanocrystals. The most commonly used and typical synthesis methods are also summarized, and the possible morphologies under different conditions are also discussed. Finally, we discuss the composition-dependent and shape-dependent properties of bimetals in terms of highlighting applications such as catalysis, energy conversion, gas sensing and bio-detection applications.
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Affiliation(s)
- Gaojie Li
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (N.L.); (Z.X.); (Q.H.)
- School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China
| | - Wenshuang Zhang
- NEST Lab, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China;
| | - Na Luo
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (N.L.); (Z.X.); (Q.H.)
| | - Zhenggang Xue
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (N.L.); (Z.X.); (Q.H.)
| | - Qingmin Hu
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (N.L.); (Z.X.); (Q.H.)
| | - Wen Zeng
- School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Jiaqiang Xu
- NEST Lab, Department of Physics, College of Science, Shanghai University, Shanghai 200444, China; (N.L.); (Z.X.); (Q.H.)
- School of Physics and Engineering, Henan University of Science and Technology, Luoyang 471023, China
- NEST Lab, Department of Chemistry, College of Science, Shanghai University, Shanghai 200444, China;
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17
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Testing PtCu Nanoparticles Supported on Highly Ordered Mesoporous Carbons CMK3 and CMK8 as Catalysts for Low-Temperature Fuel Cells. Catalysts 2021. [DOI: 10.3390/catal11060724] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Pt(Cu) nanoparticles supported on CMK3 and CMK8 ordered mesoporous carbons (OMCs) have been synthesized by electroless deposition of Cu followed by galvanic exchange with Pt. The structural characterization by high-resolution transmission electron microscopy and X-ray diffraction showed the formation of Pt(Cu) nanoparticles of 4–5 nm, in which PtCu alloys with contracted fcc Pt lattice and 70–80 at.% Pt was identified. The X-ray photoelectron spectroscopy analyses indicated that the Pt(Cu) nanoparticles were mainly composed of a PtCu alloy core covered by a Pt-rich shell, in agreement with the steady cyclic voltammograms, which did not show any Cu oxidation peaks. Electroactive surface areas up to about 70 m2 gPt−1 were obtained. The onset potentials for CO oxidation and the oxygen reduction reaction were more negative and positive, respectively, as compared to Pt/C, thus indicating higher activity of these Pt(Cu) catalysts with respect to the latter. Based on the corresponding binding energies, these better activities were attributed to the favorable geometric and ligand effects of Cu on Pt, which were able to reduce the adsorption energy of the intermediates on Pt. Pt(Cu)/CMK3 showed competitive mass and specific activities, as well as better stability than Pt/C.
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18
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Lu L, Wang B, Wu D, Zou S, Fang B. Engineering porous Pd-Cu nanocrystals with tailored three-dimensional catalytic facets for highly efficient formic acid oxidation. NANOSCALE 2021; 13:3709-3722. [PMID: 33544114 DOI: 10.1039/d0nr09164b] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Rational synthesis of bi- or multi-metallic nanomaterials with both dendritic and porous features is appealing yet challenging. Herein, with the cubic Cu2O nanoparticles composed of ultrafine Cu2O nanocrystals as a self-template, a series of Pd-Cu nanocrystals with different morphologies (e.g., aggregates, porous nanodendrites, meshy nanochains and porous nanoboxes) are synthesized through simply regulating the molar ratio of the Pd precursor to the cubic Cu2O, indicating that the galvanic replacement and Kirkendall effect across the alloying process are well controlled. Among the as-developed various Pd-Cu nanocrystals, the porous nanodendrites with both dendritic and hollow features show superior electrocatalytic activity toward formic acid oxidation. Comprehensive characterizations including three-dimensional simulated reconstruction of a single particle and high-resolution transmission electron microscopy reveal that the surface steps, defects, three-dimensional architecture, and the electronic/strain effects between Cu and Pd are responsible for the outstanding catalytic activity and excellent stability of the Pd-Cu porous nanodendrites.
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Affiliation(s)
- Linfang Lu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Bing Wang
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Di Wu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
| | - Shihui Zou
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Baizeng Fang
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6 T 1Z3, Canada.
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19
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Zheng Y, Wang X, Kong Y, Ma Y. Two-dimensional multimetallic alloy nanocrystals: recent progress and challenges. CrystEngComm 2021. [DOI: 10.1039/d1ce00975c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
In this highlight article, the recent progress on the preparation and application of multimetallic alloy nanocrystals with 2D nanostructures is systematically reviewed, as well as perspectives on future challenges and opportunities.
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Affiliation(s)
- Yiqun Zheng
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiping Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
| | - Yuhan Kong
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Yanyun Ma
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China
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20
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Pattadar DK, Masitas RA, Stachurski CD, Cliffel DE, Zamborini FP. Reversing the Thermodynamics of Galvanic Replacement Reactions by Decreasing the Size of Gold Nanoparticles. J Am Chem Soc 2020; 142:19268-19277. [PMID: 33140961 DOI: 10.1021/jacs.0c09426] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Here, we describe the surprising reactivity between surface-attached (a) 0.9, 1.6, and 4.1 nm diameter weakly stabilized Au nanoparticles (NPs) and aqueous 1.0 × 10-4 M Ag+ solution, and (b) 1.6 and 4.1 nm diameter weakly stabilized Au NPs and aqueous 1.0 × 10-5 M PtCl42-, which are considered to be antigalvanic replacement (AGR) reactions because they are not thermodynamically favorable for bulk-sized Au under these conditions. Anodic Stripping Voltammetry (ASV) and Scanning Transmission Electron Microscopy with Energy-Dispersive X-ray Spectroscopy (STEM-EDS) mapping provide quantitation of the extent of Ag and Pt replacement as a function of Au NP diameter. The extent of the reaction increases as the Au NP size decreases. The percentage of Ag in the AuAg alloy following AGR based on ASV is 17.8 ± 0.6% for 4.1 nm diameter Au NPs, 87.2 ± 2.9% for 1.6 nm Au NPs, and an unprecedented full 100% Ag for 0.9 nm diameter Au NPs. STEM-EDS mapping shows very close agreement with the ASV-determined compositions. In the case of PtCl42-, STEM-EDS mapping shows AuPt alloy NPs with 3.9 ± 1.3% and 41.1 ± 8.7% Pt following replacement with 4.1 and 1.6 nm diameter Au NPs, respectively, consistent with qualitative changes to the ASV. The size-dependent AGR correlates well with the negative shift in the standard potential (E0) for Au oxidation with decreasing NP size.
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Affiliation(s)
- Dhruba K Pattadar
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Rafael A Masitas
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | | | - David E Cliffel
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235-1822, United States
| | - Francis P Zamborini
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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21
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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
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22
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Li J, Xu A, Li F, Wang Z, Zou C, Gabardo CM, Wang Y, Ozden A, Xu Y, Nam DH, Lum Y, Wicks J, Chen B, Wang Z, Chen J, Wen Y, Zhuang T, Luo M, Du X, Sham TK, Zhang B, Sargent EH, Sinton D. Enhanced multi-carbon alcohol electroproduction from CO via modulated hydrogen adsorption. Nat Commun 2020; 11:3685. [PMID: 32703956 PMCID: PMC7378828 DOI: 10.1038/s41467-020-17499-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 06/29/2020] [Indexed: 11/16/2022] Open
Abstract
Multi-carbon alcohols such as ethanol are valued as fuels in view of their high energy density and ready transport. Unfortunately, the selectivity toward alcohols in CO2/CO electroreduction is diminished by ethylene production, especially when operating at high current densities (>100 mA cm-2). Here we report a metal doping approach to tune the adsorption of hydrogen at the copper surface and thereby promote alcohol production. Using density functional theory calculations, we screen a suite of transition metal dopants and find that incorporating Pd in Cu moderates hydrogen adsorption and assists the hydrogenation of C2 intermediates, providing a means to favour alcohol production and suppress ethylene. We synthesize a Pd-doped Cu catalyst that achieves a Faradaic efficiency of 40% toward alcohols and a partial current density of 277 mA cm-2 from CO electroreduction. The activity exceeds that of prior reports by a factor of 2.
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Affiliation(s)
- Jun Li
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Aoni Xu
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
- Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China
| | - Fengwang Li
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Ziyun Wang
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Chengqin Zou
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
- Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Christine M Gabardo
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
| | - Yuhang Wang
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Adnan Ozden
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
| | - Yi Xu
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada
| | - Dae-Hyun Nam
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Yanwei Lum
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Joshua Wicks
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Bin Chen
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Zhiqiang Wang
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B7, Canada
| | - Jiatang Chen
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B7, Canada
| | - Yunzhou Wen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China
| | - Taotao Zhuang
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Mingchuan Luo
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada
| | - Xiwen Du
- Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Tsun-Kong Sham
- Department of Chemistry, University of Western Ontario, 1151 Richmond Street, London, ON, N6A 5B7, Canada
| | - Bo Zhang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai, 200438, China
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON, M5S 3G4, Canada.
| | - David Sinton
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada.
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Wet-chemical etching of FIB lift-out TEM lamellae for damage-free analysis of 3-D nanostructures. Ultramicroscopy 2020; 216:113049. [PMID: 32593126 DOI: 10.1016/j.ultramic.2020.113049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/07/2020] [Accepted: 06/10/2020] [Indexed: 11/23/2022]
Abstract
Reducing ion beam damage from the focused ion beam (FIB) during fabrication of cross sections is a well-known challenge for materials characterization, especially cross sectional characterization of nanostructures. To address this, a new method has been developed for cross section fabrication enabling high resolution transmission electron microscopy (TEM) analysis of 3-D nanostructures free of surrounding material and free of damage detectable by TEM analysis. Before FIB processing, nanopillars are encapsulated in a sacrificial oxide which acts as a protective layer during FIB milling. The cross sectional TEM lamella containing the nanopillars is then mounted and thinned with some modifications to conventional FIB sample preparation that provide stability for the lamella during the following wet-chemical dip etch. The wet-chemical etch of the TEM lamella removes the sacrificial oxide layer, freeing the nanopillars from any material that would obscure TEM imaging. Both high resolution TEM and aberration corrected scanning TEM images of Si/SiGe pillars with diameters down to 30 nm demonstrate the successful application of this approach.
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Han J, Li S, Chen J, Liu Y, Geng D, Wang D, Zhang L. Dendritic Ag/Pd Alloy Nanostructure Arrays for Electrochemical CO
2
Reduction. ChemElectroChem 2020. [DOI: 10.1002/celc.202000405] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jie Han
- Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics, School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P. R. China
| | - Shasha Li
- Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics, School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P. R. China
| | - Jiaye Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics, School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P. R. China
| | - Yongqiang Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics, School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P. R. China
| | - Dongsheng Geng
- Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics, School of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P. R. China
| | - Dawei Wang
- Jiangsu JITRI Molecular Engineering Institute Co., Ltd. Changshu 215500 P. R. China
| | - Lichun Zhang
- School of Physics and Optoelectronic EngineeringLudong University Yantai 264025 P. R. China
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Xiang H, Zheng Y, Sun Y, Guo T, Zhang P, Li W, Kong S, Ouzounian M, Chen H, Li H, Hu TS, Yu G, Feng Y, Liu S. Bimetallic and postsynthetically alloyed PtCu nanostructures with tunable reactivity for the methanol oxidation reaction. NANOSCALE ADVANCES 2020; 2:1603-1612. [PMID: 36132327 PMCID: PMC9419734 DOI: 10.1039/d0na00076k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Abstract
Designing effective catalysts by controlling morphology and structure is key to improving the energy efficiency of fuel cells. A good understanding of the effects of specific structures on electrocatalytic activity, selectivity, and stability is needed. Here, we propose a facile method to synthesize PtCu bimetallic nanostructures with controllable compositions by using Cu nanowires as a template and ascorbic acid as a reductant. A further annealing process provided the alloy PtCu with tunable crystal structures. The combination of distinct structures with tunable compositions in the form of PtCu nanowires provides plenty of information for better understanding the reaction mechanism during catalysis. HClO4 cyclic voltammetry (CV) tests confirmed that various phase transformations occurred in bimetallic and alloy samples, affecting morphology and unit cell structures. Under a bifunctional synergistic effect and the influence of the insertion of a second metal, the two series of structures show superior performance toward methanol electrooxidation. Typically, the post-product alloy A-Pt14Cu86 with a cubic structure (a = 3.702 Å) has better methanol oxidation reaction (MOR) catalysis performance. Density functional theory (DFT) calculations were performed to determine an optimal pathway using the Gibbs free energy and to verify the dependence of the electrocatalytic performance on the lattice structure via overpotential changes. Bimetallic PtCu has high CO tolerance, maintaining high stability. This work provides an approach for the systematic design of novel catalysts and the exploration of electrocatalytic mechanisms for fuel cells and other related applications.
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Affiliation(s)
- Haiyan Xiang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Yueshao Zheng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University Changsha 410082 P. R. China
| | - Yue Sun
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Tingting Guo
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Organic Optoelectronic Materials and Devices, Kunming University Kunming 650000 P. R. China
| | - Pei Zhang
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Wei Li
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Shiwei Kong
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Miray Ouzounian
- Department of Mechanical Engineering, California State University Los Angeles CA 90032 USA
| | - Hong Chen
- School of Materials Science and Energy Engineering, Foshan University Foshan 528000 P. R. China
| | - Huimin Li
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Travis Shihao Hu
- Department of Mechanical Engineering, California State University Los Angeles CA 90032 USA
| | - Gang Yu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
| | - Yexin Feng
- Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University Changsha 410082 P. R. China
| | - Song Liu
- Institute of Chemical Biology and Nanomedicine (ICBN), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University Changsha 410082 P. R. China
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26
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Baek S, Kim K, Kwon OS, Kim H, Han JW, Kwon OJ, Kim JJ. Pd–Cu alloy catalyst synthesized by citric acid-assisted galvanic displacement reaction for N2O reduction. J APPL ELECTROCHEM 2020. [DOI: 10.1007/s10800-019-01396-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Parkash A, Jia Z, Tian T, Ge Z, Yu C, Chunli X. A New Generation of Platinum‐Copper Electrocatalysts with Ultra‐Low Concentrations of Platinum for Oxygen‐Reduction Reactions in Alkaline Media. ChemistrySelect 2020. [DOI: 10.1002/slct.202000256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anand Parkash
- School of Chemistry and Chemical EngineeringShaanxi Normal University Chang'an West Street 620 Xi'an 710119 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
| | - Zhou Jia
- School of Chemistry and Chemical EngineeringShaanxi Normal University Chang'an West Street 620 Xi'an 710119 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
| | - Tang Tian
- School of Chemistry and Chemical EngineeringShaanxi Normal University Chang'an West Street 620 Xi'an 710119 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
| | - Zhang Ge
- School of Chemistry and Chemical EngineeringShaanxi Normal University Chang'an West Street 620 Xi'an 710119 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
| | - Chen Yu
- School of Material Science and EngineeringShaanxi Normal University Xi'an 710062 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
| | - Xu Chunli
- School of Chemistry and Chemical EngineeringShaanxi Normal University Chang'an West Street 620 Xi'an 710119 PR China
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University) Ministry of Education Xi'an 710119 PR China
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28
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Gao Z, Ye H, Wang Q, Kim MJ, Tang D, Xi Z, Wei Z, Shao S, Xia X. Template Regeneration in Galvanic Replacement: A Route to Highly Diverse Hollow Nanostructures. ACS NANO 2020; 14:791-801. [PMID: 31917543 DOI: 10.1021/acsnano.9b07781] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The ability to produce a diverse spectrum of hollow nanostructures is central to the advances in many current and emerging areas of technology. Herein, we report a general method to craft hollow nanostructures with highly tunable physical and chemical parameters. The key strategy is to regenerate the nanoscale sacrificial templates in a galvanic replacement reaction through site-selective overgrowth. As examples, we demonstrate the syntheses of nanocages and nanotubes made of silver, gold, palladium, and/or platinum with well-controlled wall thicknesses and elemental distributions. Using the nanocages of silver and gold as models, we demonstrate they possess intriguing plasmonic properties and offer superior performance in biosensing applications. This study provides a powerful platform to customize hollow nanostructures with desired properties and therefore is expected to enable a variety of fundamental studies and technologically important applications.
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Affiliation(s)
- Zhuangqiang Gao
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Haihang Ye
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Qingxiao Wang
- Department of Materials Science and Engineering , University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Moon J Kim
- Department of Materials Science and Engineering , University of Texas at Dallas , Richardson , Texas 75080 , United States
| | - Dianyong Tang
- International Academy of Targeted Therapeutics and Innovation , Chongqing University of Arts and Sciences , Chongqing 402160 , People's Republic of China
| | - Zheng Xi
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Zhiyuan Wei
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Shikuan Shao
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
| | - Xiaohu Xia
- Department of Chemistry , University of Central Florida , Orlando , Florida 32816 , United States
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32816 , United States
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29
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Tang Z, Yeo BC, Han SS, Lee TJ, Bhang SH, Kim WS, Yu T. Facile aqueous-phase synthesis of Ag-Cu-Pt-Pd quadrometallic nanoparticles. NANO CONVERGENCE 2019; 6:38. [PMID: 31788735 PMCID: PMC6885459 DOI: 10.1186/s40580-019-0208-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
Ag-Cu-Pt-Pd quadrometallic nanoparticles which small Pt and Pd nanoparticles were attached on the surface of AgCu Janus nanoparticles were firstly synthesized by sequential reduction of Pt and Pd precursor in the presence of Janus AgCu bimetallic nanoparticles as seeds in an aqueous solution. Even though there was a small amount of Cu2O on the surface, the synthesized nanoparticles were mainly composed of four independent metallic part, not alloy parts. By theoretical calculation and growth mechanism study, we found that different reducing rate between Ag+ and Cu2+ and sequential reduction of Pt and Pd precursors would be key roles for the formation of the quadrometallic nanoparticles.
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Affiliation(s)
- Zengmin Tang
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Byung Chul Yeo
- Center for Computational Science, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Sang Soo Han
- Center for Computational Science, Korea Institute of Science and Technology (KIST), Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Tae-Jin Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Suk Ho Bhang
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Woo-Sik Kim
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin, 17104, Republic of Korea.
| | - Taekyung Yu
- Department of Chemical Engineering, College of Engineering, Kyung Hee University, Yongin, 17104, Republic of Korea.
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30
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Li HH, Yu SH. Recent Advances on Controlled Synthesis and Engineering of Hollow Alloyed Nanotubes for Electrocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1803503. [PMID: 30645003 DOI: 10.1002/adma.201803503] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Revised: 10/15/2018] [Indexed: 06/09/2023]
Abstract
The past decade has witnessed great progress in the synthesis and electrocatalytic applications of 1D hollow alloy nanotubes with controllable compositions and fine structures. Hollow nanotubes have been explored as promising electrocatalysts in the fuel cell reactions due to their well-controlled surface structure, size, porosity, and compositions. In addition, owing to the self-supporting ability of 1D structure, hollow nanotubes are capable of avoiding catalyst aggregation and carbon corrosion during the catalytic process, which are two other issues for the widely investigated carbon-supported nanoparticle catalysts. It is currently a great challenge to achieve high activity and stability at a relatively low cost to realize commercialization of these catalysts. An overview of the structural and compositional properties of 1D hollow alloy nanotubes, which provide a large number of accessible active sites, void spaces for electrolytes/reactants impregnation, and structural stability for suppressing aggregation, is presented. The latest advances on several strategies such as hard template and self-templating methods for controllable synthesis of hollow alloyed nanotubes with controllable structures and compositions are then summarized. Benefiting from the advantages of the unique properties and facile synthesis approaches, the capability of 1D hollow nanotubes is then highlighted by discussing examples of their applications in fuel-cell-related electrocatalysis. Finally, the remaining challenges and potential solutions in the field are summarized to provide some useful clues for the future development of 1D hollow alloy nanotube materials.
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Affiliation(s)
- Hui-Hui Li
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
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31
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Farsadrooh M, Noroozifar M, Modarresi-Alam AR, Saravani H. Sonochemical synthesis of high-performance Pd@CuNWs/MWCNTs-CH electrocatalyst by galvanic replacement toward ethanol oxidation in alkaline media. ULTRASONICS SONOCHEMISTRY 2019; 51:478-486. [PMID: 30219352 DOI: 10.1016/j.ultsonch.2018.06.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/14/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
In this paper, a fast and effective method for the palladium (Pd) wire nanostructures synthesis with the great surface area through galvanic replacement reaction utilizing copper nanowires (CuNWS) as a template by the assistance of ultrasound under room temperature condition is proposed. A multifunctional catalyst with the mentioned nanostructure, Pd@CuNWs, and multi walled carbon nanotubes (MWCNTs) and chitosan (CH) as a binder was fabricated. To investigate the morphology and bulk composition of the prepared catalyst, Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Powder Diffraction (XRD), and Inductively Coupled Plasma atomic Emission Spectroscopy (ICP-AES) were utilized. Various electrochemical techniques including chronoamperometry and cyclic voltammetry were employed for the electrocatalytic activity of ethanol electrooxidation and durability in basic solution. Electrochemical catalytic activity and durability evaluation results proved that the as-synthesized Pd@CuNWs/MWCNTs-CH has a super electrocatalytic activity compared to Pd/MWCNTs and Pd/C electrocatalysts for ethanol electrooxidation. Pd@CuNWs/MWCNTs-CH catalyst demonstrated substantially enhanced performance and long-term stability for ethanol electrooxidation in the basic solution in comparison to Pd/MWCNTs and commercial Pd/C demonstrated the potential in utilizing Pd@CuNWs/MWCNTs-CH as an efficient catalyst for ethanol oxidation. Additionally, thermodynamic and kinetic evaluations revealed that the Pd@CuNWs/MWCNTs-CH catalyst has lower activation energy compared to Pd/MWCNTs and Pd/C which leads to a lower energy barrier and an excellent charge transfer rate towards ethanol oxidation. Noticeably, the Pd@CuNWs/MWCNTs-CH presented excellent catalytic activities with high peak current density which was 9.5 times more than Pd/C, and more negative onset potential in comparison to Pd/C is acquired for ethanol electrooxidation denoting synergistic effect between CuNWs/MWCNs-CH and Pd. The Pd@CuNWs/MWCNTs-CH can be considered as a valid candidate among available electrocatalysts in direct ethanol fuel cells (DEFCs).
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Affiliation(s)
- Majid Farsadrooh
- Department of Applied Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran.
| | - Meissam Noroozifar
- Department of Applied Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran.
| | - Ali Reza Modarresi-Alam
- Department of Chemistry, Organic and Polymer Research Laboratory, University of Sistan and Baluchestan, Zahedan, Iran
| | - Hamideh Saravani
- Department of Applied Chemistry, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran
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Copper⁻Silver Bimetallic Nanowire Arrays for Electrochemical Reduction of Carbon Dioxide. NANOMATERIALS 2019; 9:nano9020173. [PMID: 30704109 PMCID: PMC6410069 DOI: 10.3390/nano9020173] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 01/25/2019] [Accepted: 01/27/2019] [Indexed: 12/29/2022]
Abstract
The electrochemical conversion of carbon dioxide (CO₂) into gaseous or liquid fuels has the potential to store renewable energies and reduce carbon emissions. Here, we report a three-step synthesis using Cu⁻Ag bimetallic nanowire arrays as catalysts for electrochemical reduction of CO₂. CuO/Cu₂O nanowires were first grown by thermal oxidation of copper mesh in ambient air and then reduced by annealing in the presence of hydrogen to form Cu nanowires. Cu⁻Ag bimetallic nanowires were then produced via galvanic replacement between Cu nanowires and the Ag⁺ precursor. The Cu⁻Ag nanowires showed enhanced catalytic performance over Cu nanowires for electrochemical reduction of CO₂, which could be ascribed to the incorporation of Ag into Cu nanowires leading to suppression of hydrogen evolution. Our work provides a method for tuning the selectivity of copper nanocatalysts for CO₂ reduction by controlling their composition.
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Yazdan-Abad MZ, Noroozifar M, Alfi N. Investigation on the electrocatalytic activity and stability of three-dimensional and two-dimensional palladium nanostructures for ethanol and formic acid oxidation. J Colloid Interface Sci 2018; 532:485-490. [DOI: 10.1016/j.jcis.2018.08.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 07/29/2018] [Accepted: 08/03/2018] [Indexed: 10/28/2022]
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Hull CM, Switzer JA. Electrodeposited Epitaxial Cu(100) on Si(100) and Lift-Off of Single Crystal-like Cu(100) Foils. ACS APPLIED MATERIALS & INTERFACES 2018; 10:38596-38602. [PMID: 30335962 DOI: 10.1021/acsami.8b13188] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A two-step potential electrodeposition technique is described which gives epitaxial films of Cu(100) on n-Si(100). Nucleation of epitaxial seeds occurs at -1.5 VAg/AgCl, whereas the film is grown at -0.5 VAg/AgCl. Cu deposition occurs with a Faradaic efficiency of 82.0% as determined spectrophotometrically. Epitaxy is achieved through a 45° in-plane rotation of Cu with respect to Si, which is shown by X-ray analysis. The 45° rotation reduces the lattice mismatch from -33.43% for an unrotated film to -5.86% for a 45° rotated film. Mosaicity, as determined via X-ray rocking curves, decreases with increasing thickness, going from a full width at half maximum of 3.99° for a 30 nm thick film to 1.67° for a 160 nm thick film. This translates to an increasing quality of epitaxy with increasing thickness. High resolution transmission electron microscopy imaging shows an amorphous SiO x interlayer between Cu and Si. Etching of SiO x with 5% HF allows epitaxial lift-off of the copper film, giving single crystal-like Cu(100) foils. Cu(100) films and single crystal-like foils have potential to be used as catalysts for CO2 reduction, substrates for technologically important materials like spintronic multilayer magnetic stacks and high temperature superconductors, and as active surfaces toward galvanic replacement by platinum group elements. Additionally, the foils could be used as single crystal-like substrates for flexible electronics.
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Affiliation(s)
- Caleb M Hull
- Department of Chemistry and Graduate Center for Materials Research , Missouri University of Science and Technology , Rolla , Missouri 65409-1170 , United States
| | - Jay A Switzer
- Department of Chemistry and Graduate Center for Materials Research , Missouri University of Science and Technology , Rolla , Missouri 65409-1170 , United States
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35
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M. PR, C. S, Berchmans S. Methanol electro-oxidation by nanostructured Pt/Cu bimetallic on poly 3,4 ethylenedioxythiophene (PEDOT). Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Tailoring multi-metallic nanotubes by copper nanowires with platinum and gold via galvanic replacement route for the efficient methanol oxidation reaction. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.094] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Lee KY, Park H, Kim TH, Kim J. Fabrication of Colloidal Gold Nanoparticles via Galvanic Replacement in Disproportionation of H2
O2
Solution and Their Inverse Photoresponse. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kang Yeol Lee
- Department of Chemistry and Research Institute of Natural Science; Gyeongsang National University; Jinju 52828 Korea
| | - Hyunjin Park
- Department of Chemistry and Research Institute of Natural Science; Gyeongsang National University; Jinju 52828 Korea
| | - Tae Ho Kim
- Department of Chemistry and Research Institute of Natural Science; Gyeongsang National University; Jinju 52828 Korea
| | - Jineun Kim
- Department of Chemistry and Research Institute of Natural Science; Gyeongsang National University; Jinju 52828 Korea
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38
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Oxygen Electroreduction in Alkaline Solution on Pd Coatings Prepared by Galvanic Exchange of Copper. Electrocatalysis (N Y) 2017. [DOI: 10.1007/s12678-017-0445-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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39
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Morphological Evolution of Te and Bi2Te3 Microstructures during Galvanic Displacement of Electrodeposited Co Thin Films. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.09.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Shahrokhian S, Rezaee S. Fabrication of Trimetallic Pt−Pd−Co Porous Nanostructures on Reduced Graphene Oxide by Galvanic Replacement: Application to Electrocatalytic Oxidation of Ethylene Glycol. ELECTROANAL 2017. [DOI: 10.1002/elan.201700355] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Saeed Shahrokhian
- Department of Chemistry; Sharif University of Technology; Tehran 11155-9516 Iran
- Institute for Nanoscience and Technology; Sharif University of Technology; Tehran Iran
| | - Sharifeh Rezaee
- Department of Chemistry; Sharif University of Technology; Tehran 11155-9516 Iran
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41
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Demkiv O, Smutok O, Gonchar M, Nisnevitch M. A Reagentless Amperometric Formaldehyde-Selective Chemosensor Based on Platinized Gold Electrodes. MATERIALS 2017; 10:ma10050503. [PMID: 28772868 PMCID: PMC5459054 DOI: 10.3390/ma10050503] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 05/02/2017] [Accepted: 05/03/2017] [Indexed: 11/16/2022]
Abstract
Fabrication and characterization of a new amperometric chemosensor for accurate formaldehyde analysis based on platinized gold electrodes is described. The platinization process was performed electrochemically on the surface of 4 mm gold planar electrodes by both electrolysis and cyclic voltamperometry. The produced electrodes were characterized using scanning electron microscopy and X-ray spectral analysis. Using a low working potential (0.0 V vs. Ag/AgCl) enabled an essential increase in the chemosensor’s selectivity for the target analyte. The sensitivity of the best chemosensor prototype to formaldehyde is uniquely high (28180 A·M−1·m−2) with a detection limit of 0.05 mM. The chemosensor remained stable over a one-year storage period. The formaldehye-selective chemosensor was tested on samples of commercial preparations. A high correlation was demonstrated between the results obtained by the proposed chemosensor, chemical and enzymatic methods (R = 0.998). The developed formaldehyde-selective amperometric chemosensor is very promising for use in industry and research, as well as for environmental control.
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Affiliation(s)
- Olha Demkiv
- Department of Analytical Biotechnology, Institute of Cell Biology, Drahomanov Street 14/16, 79005 Lviv, Ukraine.
| | - Oleh Smutok
- Department of Analytical Biotechnology, Institute of Cell Biology, Drahomanov Street 14/16, 79005 Lviv, Ukraine.
| | - Mykhailo Gonchar
- Department of Analytical Biotechnology, Institute of Cell Biology, Drahomanov Street 14/16, 79005 Lviv, Ukraine.
- Institute of Applied Biotechnology and Basic Sciences, University of Rzeszow, Kolbuszowa 36-100, Poland.
| | - Marina Nisnevitch
- Department of Chemical Engineering, Biotechnology and Materials, Ariel University, Ariel 4070000, Israel.
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42
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Liu X, Astruc D. From Galvanic to Anti-Galvanic Synthesis of Bimetallic Nanoparticles and Applications in Catalysis, Sensing, and Materials Science. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1605305. [PMID: 28128862 DOI: 10.1002/adma.201605305] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 11/01/2016] [Indexed: 05/28/2023]
Abstract
The properties of two alloyed metals have been known since the Bronze Age to outperform those of a single metal. How alloying and mixing metals applies to the nanoworld is now attracting considerable attention. The galvanic process, which is more than two centuries old and involves the reduction of a noble-metal cation by a less noble metal, has not only been used in technological processes, but also in the design of nanomaterials for the synthesis of bimetallic transition-metal nanoparticles. The background and nanoscience applications of the galvanic reactions (GRs) are reviewed here, in particular with emphasis on recent progress in bimetallic catalysis. Very recently, new reactions have been discovered with nanomaterials that contradict the galvanic principle, and these reactions, called anti-galvanic reactions (AGRs), are now attracting much interest for their mechanistic, synthetic, catalytic, and sensor aspects. The second part of the review deals with these AGRs and compares GRs and AGRs, including the intriguing AGRs mechanism and the first applications.
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Affiliation(s)
- Xiang Liu
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
- UMR 6226, Institut des Sciences Chimiques de Rennes, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Didier Astruc
- ISM, UMR CNRS 5255, Université de Bordeaux, 351 Cours de la Liberation, 33405, Talence Cedex, France
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43
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Thota R, Sundari S, Berchmans S, Ganesh V. Silver - Copper Bimetallic Flexible Electrodes Prepared Using a Galvanic Replacement Reaction and Their Applications. ChemistrySelect 2017. [DOI: 10.1002/slct.201601810] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Raju Thota
- Electrodics and Electrocatalysis (EEC) Division; CSIR - Central Electrochemical Research Institute (CSIR - CECRI); Karaikudi - 630003 Tamilnadu India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110025 India
| | - S. Sundari
- Electrodics and Electrocatalysis (EEC) Division; CSIR - Central Electrochemical Research Institute (CSIR - CECRI); Karaikudi - 630003 Tamilnadu India
| | - Sheela Berchmans
- Electrodics and Electrocatalysis (EEC) Division; CSIR - Central Electrochemical Research Institute (CSIR - CECRI); Karaikudi - 630003 Tamilnadu India
| | - V. Ganesh
- Electrodics and Electrocatalysis (EEC) Division; CSIR - Central Electrochemical Research Institute (CSIR - CECRI); Karaikudi - 630003 Tamilnadu India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi - 110025 India
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44
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Alvarez AE, Sieben JM, Duarte MME. Synthesis and Characterization of Three-Dimensional Porous Cu@Pt and Cu@Pt-Ru Catalysts for Methanol Oxidation. ChemCatChem 2017. [DOI: 10.1002/cctc.201601556] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Andrea E. Alvarez
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC) and CONICET; Universidad Nacional del Sur; Av. Alem 1253 B8000CPB Bahía Blanca Argentina
| | - Juan Manuel Sieben
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC) and CONICET; Universidad Nacional del Sur; Av. Alem 1253 B8000CPB Bahía Blanca Argentina
| | - Marta M. E. Duarte
- Instituto de Ingeniería Electroquímica y Corrosión (INIEC) and CONICET; Universidad Nacional del Sur; Av. Alem 1253 B8000CPB Bahía Blanca Argentina
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45
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Wu D, Xu H, Cao D, Fisher A, Gao Y, Cheng D. PdCu alloy nanoparticle-decorated copper nanotubes as enhanced electrocatalysts: DFT prediction validated by experiment. NANOTECHNOLOGY 2016; 27:495403. [PMID: 27827341 DOI: 10.1088/0957-4484/27/49/495403] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In order to combine the advantages of both 0D and 1D nanostructured materials into a single catalyst, density functional theory (DFT) calculations have been used to study the PdCu alloy NP-decorated Cu nanotubes (PdCu@CuNTs). These present a significant improvement of the electrocatalytic activity of formic acid oxidation (FAO). Motivated by our theoretical work, we adopted the seed-mediated growth method to successfully synthesize the nanostructured PdCu@CuNTs. The new catalysts triple the catalytic activity for FAO, compared with commercial Pd/C. In summary, our work provides a new strategy for the DFT prediction and experimental synthesis of novel metal NP-decorated 1D nanostructures as electrocatalysts for fuel cells.
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Affiliation(s)
- Dengfeng Wu
- International Research Center for Soft Matter, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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46
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Cheng D, Wu D, Xu H, Fisher A. Composition-controlled Synthesis of PtCuNPs Shells on Copper Nanowires as Electrocatalysts. ChemistrySelect 2016. [DOI: 10.1002/slct.201600562] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Daojian Cheng
- International Research Center for Soft Matter, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Dengfeng Wu
- International Research Center for Soft Matter, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Haoxiang Xu
- International Research Center for Soft Matter, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
| | - Adrian Fisher
- International Research Center for Soft Matter, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 China
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Effects of the Electrodeposition Time in the Synthesis of Carbon-Supported Pt(Cu) and Pt-Ru(Cu) Core-Shell Electrocatalysts for Polymer Electrolye Fuel Cells. Catalysts 2016. [DOI: 10.3390/catal6080125] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Bimetallic Catalysts Containing Gold and Palladium for Environmentally Important Reactions. Catalysts 2016. [DOI: 10.3390/catal6070097] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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Gilroy KD, Ruditskiy A, Peng HC, Qin D, Xia Y. Bimetallic Nanocrystals: Syntheses, Properties, and Applications. Chem Rev 2016; 116:10414-72. [DOI: 10.1021/acs.chemrev.6b00211] [Citation(s) in RCA: 1109] [Impact Index Per Article: 138.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kyle D. Gilroy
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | | | | | | | - Younan Xia
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
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Karabiberoğlu ŞU, Koçak ÇC, Koçak S, Dursun Z. Polymer Film Supported Bimetallic Au-Ag Catalysts for Electrocatalytic Oxidation of Ammonia Borane in Alkaline Media. NANO-MICRO LETTERS 2016; 8:358-370. [PMID: 30460294 PMCID: PMC6223689 DOI: 10.1007/s40820-016-0095-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 05/27/2016] [Indexed: 05/27/2023]
Abstract
ABSTRACT Ammonia borane is widely used in most areas including fuel cell applications. The present paper describes electrochemical behavior of ammonia borane in alkaline media on the poly(p-aminophenol) film modified with Au and Ag bimetallic nanoparticles. The glassy carbon electrode was firstly covered with polymeric film electrochemically and then, Au, Ag, and Au-Ag nanoparticles were deposited on the polymeric film, respectively. The surface morphology and chemical composition of these electrodes were examined by scanning electron microscopy, transmission electron microscopy, electrochemical impedance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. It was found that alloyed Au-Ag bimetallic nanoparticles are formed. Electrochemical measurements indicate that the developed electrode modified by Au-Ag bimetallic nanoparticles exhibit the highest electrocatalytic activity for ammonia borane oxidation in alkaline media. The rotating disk electrode voltammetry demonstrates that the developed electrode can catalyze almost six-electron oxidation pathway of ammonia borane. Our results may be attractive for anode materials of ammonia borane fuel cells under alkaline conditions. GRAPHICAL ABSTRACT
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Affiliation(s)
| | - Çağrı Ceylan Koçak
- Occupational Health and Safety Department, Bergama Vocational School, Dokuz Eylul University, Izmir, Turkey
| | - Süleyman Koçak
- Department of Chemistry, Science and Art Faculty, Celal Bayar University, 45040 Manisa, Turkey
| | - Zekerya Dursun
- Department of Chemistry, Science Faculty, Ege University, 35100 Bornova, Izmir, Turkey
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