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Pal N, Chakraborty D, Cho EB, Seo JG. Recent Developments on the Catalytic and Biosensing Applications of Porous Nanomaterials. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2184. [PMID: 37570502 PMCID: PMC10420944 DOI: 10.3390/nano13152184] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023]
Abstract
Nanoscopic materials have demonstrated a versatile role in almost every emerging field of research. Nanomaterials have come to be one of the most important fields of advanced research today due to its controllable particle size in the nanoscale range, capacity to adopt diverse forms and morphologies, high surface area, and involvement of transition and non-transition metals. With the introduction of porosity, nanomaterials have become a more promising candidate than their bulk counterparts in catalysis, biomedicine, drug delivery, and other areas. This review intends to compile a self-contained set of papers related to new synthesis methods and versatile applications of porous nanomaterials that can give a realistic picture of current state-of-the-art research, especially for catalysis and sensor area. Especially, we cover various surface functionalization strategies by improving accessibility and mass transfer limitation of catalytic applications for wide variety of materials, including organic and inorganic materials (metals/metal oxides) with covalent porous organic (COFs) and inorganic (silica/carbon) frameworks, constituting solid backgrounds on porous materials.
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Affiliation(s)
- Nabanita Pal
- Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad 500075, India;
| | - Debabrata Chakraborty
- Institute for Applied Chemistry, Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea;
| | - Eun-Bum Cho
- Institute for Applied Chemistry, Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea;
| | - Jeong Gil Seo
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
- Clean-Energy Research Institute, Hanyang University, Seoul 04763, Republic of Korea
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2
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Adegoke KA, Maxakato NW. Porous metal oxide electrocatalytic nanomaterials for energy conversion: Oxygen defects and selection techniques. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214389] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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3
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Yin H, Shen Y, Xi W, Liu X, Yin S, Jia J, Zhang J, Ding Y. Accelerated Hydrogen "Spill-Over" Enhances Anode Performance of Tensile Strained Pd-Based Fuel Cell Electrocatalysts. SMALL METHODS 2022; 6:e2101328. [PMID: 35038252 DOI: 10.1002/smtd.202101328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Development of efficient electrocatalysts usually relies on half-cell electrochemical tests for rapid material screening, which however are not always consistent with the associated full cell evaluation. This study designs a tensile-strained Pd anode and reveals that with a lower apparent activity toward the hydrogen oxidation reaction as compared to the unstrained one, it exhibits a surprisingly high activity in proton exchange membrane fuel cells (PEMFCs). With an ultralow Pd loading of 4.5 µg cm-2 , the tensile-strained Pd achieves a maximum power density of 1048 mW cm-2 , indicating a 30-fold improvement in power efficiency than that of commercial Pd/C, nearly four times of that of the unstrained one. This discrepancy can be ascribed to the hydrogen-rich surface in the H2 atmosphere of PEMFCs owing to the accelerated hydrogen "spill-over" in the tensile-strained Pd with a standout hydrogen storage property.
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Affiliation(s)
- Huiming Yin
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Yongli Shen
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Wei Xi
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Xizheng Liu
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Shuai Yin
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Jiankuo Jia
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Jian Zhang
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Yi Ding
- Tianjin Key Laboratory of Advanced Functional Porous Materials and Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
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Lei Y, Huo D, Ding M, Zhang F, Yu R, Zhang Y, Du H. Synthesis of Hollow N,P-Doped Carbon/Co 2P 2O 7 Nanotubular Crystals as an Effective Electrocatalyst for the Oxygen Reduction Reaction. ACS OMEGA 2022; 7:5751-5763. [PMID: 35224335 PMCID: PMC8867544 DOI: 10.1021/acsomega.1c05608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
Herein, N,P-rich carbon/carbon/Co2P2O7 hollow nanotubes with a multilayered wall structure were successfully fabricated for the ORR electrocatalyst. The hollow tube structure catalysts were obtained by carbonizing Co2P2O7/C coated with the phytate-doped PANI. The Co2P2O7/C was obtained by phosphorylating a basic cobalt carbonate with phytic acid (PA). Onset and positive half-wave potentials were measured at 0.90 and 0.84 V, respectively, with a diffusion-limited current density of 4.58 mA/cm2. Effect of the thickness of polyaniline (PANI) in the electrocatalyst precursor was also investigated. The specific surface area as well as the content of graphitic N altered as the time of PANI polymerization increased, resulting in remarkably different catalytic activities. This study of hollow nanotube catalysts exhibits efficient noble-metal-free oxygen reduction reaction electrocatalysts for other chemical systems, which will provide abundant electrochemical active centers and sufficient energy.
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Affiliation(s)
- Yanhua Lei
- Institute
of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Da Huo
- Institute
of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Mengchao Ding
- Institute
of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Fei Zhang
- Institute
of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Ruixuan Yu
- National
Laboratory of Solid State Microstructures, College of Engineering
and Applied Sciences, Nanjing University, Nanjing 210023, China
| | - Yuliang Zhang
- Institute
of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306, China
| | - Hailiang Du
- College
of Mechanical and Electronic Engineering, Shanghai Jian Qiao University, Shanghai 201315, China
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Sumdani MG, Islam MR, Yahaya ANA, Safie SI. Recent advancements in synthesis, properties, and applications of conductive polymers for electrochemical energy storage devices: A review. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25859] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Md Gulam Sumdani
- Malaysian Institute of Chemical and Bio‐engineering Technology, Universiti Kuala Lumpur Kuala Lumpur Malaysia
| | - Muhammad Remanul Islam
- Malaysian Institute of Industrial Technology, Universiti Kuala Lumpur Johor Bahru Malaysia
| | - Ahmad Naim A. Yahaya
- Institute of Postgraduate Studies, Universiti Kuala Lumpur Kuala Lumpur Wilayah Persekutuan Malaysia
| | - Sairul Izwan Safie
- Malaysian Institute of Industrial Technology, Universiti Kuala Lumpur Johor Bahru Malaysia
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Sun J, Hou Y, Wang X, Kou T, Liu N, Zhang R, Zhang Z. Three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts with high-performance towards methanol electro-oxidation reaction and oxygen reduction reaction. RSC Adv 2021; 11:14970-14979. [PMID: 35424024 PMCID: PMC8697853 DOI: 10.1039/d1ra01072g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/03/2021] [Indexed: 01/16/2023] Open
Abstract
Alloying with transition elements is proven to be an effective way to improve the methanol electro-oxidation reaction (MOR) and oxygen reduction reaction (ORR) activities of Pt catalysts for direct methanol fuel cells (DMFCs). Through a process of rapid solidification and two-step dealloying, we have successfully fabricated three-dimensional mesoporous PtM (M = Co, Cu, Ni) nanowire catalysts, which show much enhanced electrocatalytic properties towards MOR and ORR in comparison with the commercial Pt/C catalyst. Electrochemical tests indicate that alloying with Cu presents the best ORR activities, the half-wave potential of which is 42 mV positively shifted compared with the commercial Pt/C (0.892 V vs. RHE). Meanwhile, the PtM nanowire catalysts also possess good CO tolerance as well as stability for 10 000 cycles of cyclic voltammetry scanning. This convenient preparation method is promising for the development of high performance electrocatalysts for MOR and ORR in DMFCs.
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Affiliation(s)
- Junzhe Sun
- School of Materials and Chemical Engineering, Zhongyuan University of Technology Zhengzhou 450007 P. R. China
| | - Yubo Hou
- School of Materials and Chemical Engineering, Zhongyuan University of Technology Zhengzhou 450007 P. R. China
| | - Xuetao Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology Zhengzhou 450007 P. R. China
| | - Tianyi Kou
- Department of Chemistry and Biochemistry, University of California Santa Cruz California 95064 USA
| | - Na Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University Jingshi Road 17923 Jinan 250061 P. R. China
| | - Ruijie Zhang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology Zhengzhou 450007 P. R. China
| | - Zhonghua Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University Jingshi Road 17923 Jinan 250061 P. R. China
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Zhao ZJ, Ahn J, Hwang SH, Ko J, Jeong Y, Bok M, Kang HJ, Choi J, Jeon S, Park I, Jeong JH. Large-Area Nanogap-Controlled 3D Nanoarchitectures Fabricated via Layer-by-Layer Nanoimprint. ACS NANO 2021; 15:503-514. [PMID: 33439612 DOI: 10.1021/acsnano.0c05290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The fabrication of large-area and flexible nanostructures currently presents various challenges related to the special requirements for 3D multilayer nanostructures, ultrasmall nanogaps, and size-controlled nanomeshes. To overcome these rigorous challenges, a simple method for fabricating wafer-scale, ultrasmall nanogaps on a flexible substrate using a temperature above the glass transition temperature (Tg) of the substrate and by layer-by-layer nanoimprinting is proposed here. The size of the nanogaps can be easily controlled by adjusting the pressure, heating time, and heating temperature. In addition, 3D multilayer nanostructures and nanocomposites with 2, 3, 5, 7, and 20 layers were fabricated using this method. The fabricated nanogaps with sizes ranging from approximately 1 to 40 nm were observed via high-resolution transmission electron microscopy (HRTEM). The multilayered nanostructures were evaluated using focused ion beam (FIB) technology. Compared with conventional methods, our method could not only easily control the size of the nanogaps on the flexible large-area substrate but could also achieve fast, simple, and cost-effective fabrication of 3D multilayer nanostructures and nanocomposites without any post-treatment. Moreover, a transparent electrode and nanoheater were fabricated and evaluated. Finally, surface-enhanced Raman scattering substrates with different nanogaps were evaluated using rhodamine 6G. In conclusion, it is believed that the proposed method can solve the problems related to the high requirements of nanofabrication and can be applied in the detection of small molecules and for manufacturing flexible electronics and soft actuators.
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Affiliation(s)
- Zhi-Jun Zhao
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Junseong Ahn
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Soon Hyoung Hwang
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Jiwoo Ko
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Yongrok Jeong
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Moonjeong Bok
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Hyeok-Joong Kang
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Jungrak Choi
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Sohee Jeon
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
| | - Inkyu Park
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea
| | - Jun-Ho Jeong
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
- Department of Nano Mechatronics, University of Science and Technology, 217, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, South Korea
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8
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Buaki-Sogó M, García-Carmona L, Gil-Agustí M, Zubizarreta L, García-Pellicer M, Quijano-López A. Enzymatic Glucose-Based Bio-batteries: Bioenergy to Fuel Next-Generation Devices. Top Curr Chem (Cham) 2020; 378:49. [PMID: 33125588 DOI: 10.1007/s41061-020-00312-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/05/2020] [Indexed: 11/26/2022]
Abstract
This article consists of a review of the main concepts and paradigms established in the field of biological fuel cells or biofuel cells. The aim is to provide an overview of the current panorama, basic concepts, and methodologies used in the field of enzymatic biofuel cells, as well as the applications of these bio-systems in flexible electronics and implantable or portable devices. Finally, the challenges needing to be addressed in the development of biofuel cells capable of supplying power to small size devices with applications in areas related to health and well-being or next-generation portable devices are analyzed. The aim of this study is to contribute to biofuel cell technology development; this is a multidisciplinary topic about which review articles related to different scientific areas, from Materials Science to technology applications, can be found. With this article, the authors intend to reach a wide readership in order to spread biofuel cell technology for different scientific profiles and boost new contributions and developments to overcome future challenges.
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Affiliation(s)
- Mireia Buaki-Sogó
- Instituto Tecnológico de la Energía (ITE), Avenida Juan de la Cierva, 24, 46980, Paterna, Valencia, Spain.
| | - Laura García-Carmona
- Instituto Tecnológico de la Energía (ITE), Avenida Juan de la Cierva, 24, 46980, Paterna, Valencia, Spain
| | - Mayte Gil-Agustí
- Instituto Tecnológico de la Energía (ITE), Avenida Juan de la Cierva, 24, 46980, Paterna, Valencia, Spain
| | - Leire Zubizarreta
- Instituto Tecnológico de la Energía (ITE), Avenida Juan de la Cierva, 24, 46980, Paterna, Valencia, Spain
| | - Marta García-Pellicer
- Instituto Tecnológico de la Energía (ITE), Avenida Juan de la Cierva, 24, 46980, Paterna, Valencia, Spain
| | - Alfredo Quijano-López
- ITE Universitat Politécnica de València, Camino de Vera s/n edificio 6C, 46022, Valencia, Spain
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Petriev I, Pushankina P, Lutsenko I, Shostak N, Baryshev M. Synthesis, Electrocatalytic and Gas Transport Characteristics of Pentagonally Structured Star-Shaped Nanocrystallites of Pd-Ag. NANOMATERIALS 2020; 10:nano10102081. [PMID: 33096829 PMCID: PMC7589313 DOI: 10.3390/nano10102081] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 11/16/2022]
Abstract
The method of synthesis of bimetallic Pd-Ag pentagonally structured catalyst "nanostar" on the surface of Pd-23%Ag alloy films has been developed. The resulting catalyst was studied as a highly active functional layer for methanol oxidation reaction (MOR) in alkaline media and the intensification of hydrogen transport through the Pd-23%Ag membrane in the processes of hydrogen diffusion purification. A modifying layer with a controlled size, composition and excellent electrocatalytic activity was synthesized by electrochemical deposition at a reduced current density compared to classical methods. The low deposition rate affects the formation of pentagonally structured nanocrystallites, allowing Pd and Ag particles to form well-defined structures due to the properties of the surfactant used. Electrochemical studies have demonstrated that the catalyst synthesized by the "nanostar" method shows better electrocatalytic activity in relation to MOR and demonstrates a higher peak current (up to 17.82 µA cm-2) in comparison with one for the catalyst synthesized by the "nanoparticle" method (up to 10.66 µA cm-2) in a cyclic voltammetric study. The nanostar catalyst electrode releases the highest current density (0.25 µA cm-2) for MOR and demonstrates higher catalytic activity for the oxidation of possible intermediates such as sodium formate in MOR. In the processes of diffusion membrane purification of hydrogen, a multiple increase in the density of the penetrating flux of hydrogen through the membranes modified by the "nanostar" catalyst (up to 10.6 mmol s-1 m-2) was demonstrated in comparison with the membranes modified by the "nanoparticles" method (up to 4.49 mmol s-1 m-2). Research data may indicate that the properties of the developed pentagonally structured catalyst "nanostar" and its enhanced activity with respect to reactions involving hydrogen increase the desorption activity of the membrane, which ultimately accelerates the overall stepwise transfer of hydrogen across the membrane.
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Affiliation(s)
- Iliya Petriev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (I.L.); (M.B.)
- Laboratory of Problems of Stable Isotope Spreading in Living Systems, Southern Scientific Centre of the RAS, 344000 Rostov-on-Don, Russia
- Correspondence:
| | - Polina Pushankina
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (I.L.); (M.B.)
| | - Ivan Lutsenko
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (I.L.); (M.B.)
| | - Nikita Shostak
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
| | - Mikhail Baryshev
- Department of Physics, Kuban State University, 350040 Krasnodar, Russia; (P.P.); (I.L.); (M.B.)
- Department of Oil and Gas Business, Kuban State Technological University, 350040 Krasnodar, Russia;
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Microstructure of Ni 0.5Zn 0.5Fe 2O 4 Nanofiber with Metal Nitrates in Electrospinning Precursor. NANOMATERIALS 2020; 10:nano10071344. [PMID: 32660131 PMCID: PMC7407117 DOI: 10.3390/nano10071344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/06/2020] [Accepted: 07/07/2020] [Indexed: 11/17/2022]
Abstract
Electrospun NiZn ferrite nanofibers have great potential due to their one-dimensional structure and electrical properties, but they have a low reproducibility resulting from many process confounders, so much research effort is needed to achieve optimized process control. For structure control, the viscosity of the precursor solution is a likely parameter. One solution is to use polyvinyl pyrrolidone (PVP) and metal nitrate to obtain the desired viscosity by increasing the nitrate content, even if the polymer content is decreased. Ni0.5Zn0.5Fe2O4 ferrite nanofiber was electrospun with various precursor conditions. Fifteen different precursor solutions, with a content of five polymers and three metal nitrates, were prepared, with precursor solutions composed of Fe(NO3)2·9H2O, Ni(NO3)2·6H2O, Zn(NO3)2·6H2O, polyvinyl pyrrolidone (PVP), and N,N-dimethylmethanamide. The fiber diameter changed from the lowest, of 62.41 nm, to 417.54 nm. This study shows that the average diameter can be controlled using the metal nitrate concentration without a difference in crystal structure when PVP is used. In a 24.0 mmol metal nitrate precursor solution, the process yield was improved to 140% after heat treatment. There was also no significant difference in the crystal structure and morphology. This system reduces the cost of raw materials for electrospinning and increases the process yield of NiZn ferrite nanofibers.
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Zhang Y, Nishi N, Sakka T. Interface-templated synthesis of single-crystalline silver chain-like nanobelts at the liquid-liquid interface between water and redox-active ionic liquid. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Atomically Dispersed Fe on Nanosheet-linked, Defect-rich, Highly N-Doped 3D Porous Carbon for Efficient Oxygen Reduction. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0101-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Okazaki H, Kakitani K, Kimata T, Idesaki A, Koshikawa H, Matsumura D, Yamamoto S, Yamaki T. Changes in electronic structure of carbon supports for Pt catalysts induced by vacancy formation due to Ar + irradiation. J Chem Phys 2020; 152:124708. [PMID: 32241116 DOI: 10.1063/1.5144568] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
X-ray absorption spectroscopy measurements were performed for the C K-edge of Pt nanoparticles on Ar+-irradiated carbon supports in order to elucidate the origin of improved catalyst performance after the introduction of vacancies into the carbon support. We observed a change in the electronic structure at the interface between the Pt nanoparticles and the carbon support after vacancy introduction, which is in good agreement with theoretical results. The results indicated that vacancy introduction resulted in a drastic change in the Pt-C interactions, which likely affected the d-band center of the Pt nanoparticles and led to the enhancement of the oxygen reduction reaction in catalysts.
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Affiliation(s)
- Hiroyuki Okazaki
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Kenta Kakitani
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Tetsuya Kimata
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8503, Japan
| | - Akira Idesaki
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Hiroshi Koshikawa
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Daiju Matsumura
- Materials Sciences Research Center, Japan Atomic Energy Agency, Koto, Sayo 679-5148, Japan
| | - Shunya Yamamoto
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
| | - Tetsuya Yamaki
- National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki, Takasaki 370-1292, Japan
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Novomlinskiy IN, Guterman VE, Danilenko MV, Volochaev VA. Platinum Electrocatalysts Deposited onto Composite Carbon Black–Metal Oxide Support. RUSS J ELECTROCHEM+ 2019. [DOI: 10.1134/s1023193519070097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Catalytic oxidation of ethanol by a nanostructured Ni-Co/RGO composite: Electrochemical construction and investigation. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113200] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Bai L, Ouyang Y, Song J, Xu Z, Liu W, Hu J, Wang Y, Yuan F. Synthesis of Metallic Nanocrystals: From Noble Metals to Base Metals. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E1497. [PMID: 31071982 PMCID: PMC6539706 DOI: 10.3390/ma12091497] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 05/03/2019] [Accepted: 05/03/2019] [Indexed: 11/17/2022]
Abstract
Metallic nanocrystals exhibit superior properties to their bulk counterparts because of the reduced sizes, diverse morphologies, and controllable exposed crystal facets. Therefore, the fabrication of metal nanocrystals and the adjustment of their properties for different applications have attracted wide attention. One of the typical examples is the fabrication of nanocrystals encased with high-index facets, and research on their magnified catalytic activities and selections. Great accomplishment has been achieved within the field of noble metals such as Pd, Pt, Ag, and Au. However, it remains challenging in the fabrication of base metal nanocrystals such as Ni, Cu, and Co with various structures, shapes, and sizes. In this paper, the synthesis of metal nanocrystals is reviewed. An introduction is briefly given to the metal nanocrystals and the importance of synthesis, and then commonly used synthesis methods for metallic nanocrystals are summarized, followed by specific examples of metal nanocrystals including noble metals, alloys, and base metals. The synthesis of base metal nanocrystals is far from satisfactory compared to the tremendous success achieved in noble metals. Afterwards, we present a discussion on specific synthesis methods suitable for base metals, including seed-mediated growth, ligand control, oriented attachment, chemical etching, and Oswald ripening, based on the comprehensive consideration of thermodynamics, kinetics, and physical restrictions. At the end, conclusions are drawn through the prospect of the future development direction.
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Affiliation(s)
- Liuyang Bai
- Zhumadian Academy of Industry Innovation and Development, Huanghuai University, Zhumadian 463000, China.
- State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yuge Ouyang
- State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Jun Song
- Zhumadian Academy of Industry Innovation and Development, Huanghuai University, Zhumadian 463000, China.
| | - Zhi Xu
- Zhumadian Academy of Industry Innovation and Development, Huanghuai University, Zhumadian 463000, China.
| | - Wenfu Liu
- Department of Mechanical and Energy Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Jingyu Hu
- Department of Mechanical and Energy Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Yinling Wang
- Department of Mechanical and Energy Engineering, Huanghuai University, Zhumadian 463000, China.
| | - Fangli Yuan
- State Key Laboratory of Multi-Phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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Effectiveness of Biosynthesized Trimetallic Au/Pt/Ag Nanoparticles on Planktonic and Biofilm Enterococcus faecalis and Enterococcus faecium Forms. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01570-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Verma A, Gautam SP, Bansal KK, Prabhakar N, Rosenholm JM. Green Nanotechnology: Advancement in Phytoformulation Research. MEDICINES (BASEL, SWITZERLAND) 2019; 6:E39. [PMID: 30875823 PMCID: PMC6473607 DOI: 10.3390/medicines6010039] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/12/2019] [Accepted: 03/02/2019] [Indexed: 12/31/2022]
Abstract
The ultimate goal of any scientific development is to increase well-being and human health. Novel strategies are required for the achievement of safe and effective therapeutic treatments beyond the conventional ones, and society needs new requirements for new technologies, moving towards clean and green technology development. Green nanotechnology is a branch of green technology that utilizes the concepts of green chemistry and green engineering. It reduces the use of energy and fuel by using less material and renewable inputs wherever possible. Green nanotechnology, in phytoformulations, significantly contributes to environmental sustainability through the production of nanomaterials and nanoproducts, without causing harm to human health or the environment. The rationale behind the utilization of plants in nanoparticle formulations is that they are easily available and possess a broad variability of metabolites, such as vitamins, antioxidants, and nucleotides. For instance, gold (Au) nanoparticles have attracted substantial attention for their controllable size, shape, and surface properties. A variety of copper (Cu) and copper oxide (CuO) nanoparticles have also been synthesized from plant extracts. Titanium dioxide and zinc oxide nanoparticles are also important metal oxide nanomaterials that have been synthesized from a number of plant extracts. International and domestic laws, government and private-party programs, regulations and policies are being carefully reviewed and revised to increase their utility and nurture these nanoscale materials for commercialization. Inspiring debates and government initiatives are required to promote the sustainable use of nanoscale products. In this review, we will discuss the potential of the utilization of plant extracts in the advancement of nanotechnology.
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Affiliation(s)
- Ajay Verma
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland.
| | - Surya P Gautam
- CT Institute of Pharmaceutical Sciences, Jalandhar 144020, India.
| | - Kuldeep K Bansal
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland.
| | - Neeraj Prabhakar
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland.
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, 20520 Turku, Finland.
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Iqbal M, Kaneti YV, Kim J, Yuliarto B, Kang YM, Bando Y, Sugahara Y, Yamauchi Y. Chemical Design of Palladium-Based Nanoarchitectures for Catalytic Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804378. [PMID: 30633438 DOI: 10.1002/smll.201804378] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 12/10/2018] [Indexed: 06/09/2023]
Abstract
Palladium (Pd) plays an important role in numerous catalytic reactions, such as methanol and ethanol oxidation, oxygen reduction, hydrogenation, coupling reactions, and carbon monoxide oxidation. Creating Pd-based nanoarchitectures with increased active surface sites, higher density of low-coordinated atoms, and maximized surface coverage for the reactants is important. To address the limitations of pure Pd, various Pd-based nanoarchitectures, including alloys, intermetallics, and supported Pd nanomaterials, have been fabricated by combining Pd with other elements with similar or higher catalytic activity for many catalytic reactions. Herein, recent advances in the preparation of Pd-based nanoarchitectures through solution-phase chemical reduction and electrochemical deposition methods are summarized. Finally, the trend and future outlook in the development of Pd nanocatalysts toward practical catalytic applications are discussed.
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Affiliation(s)
- Muhammad Iqbal
- International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yusuf Valentino Kaneti
- International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Jeonghun Kim
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Brian Yuliarto
- Department of Engineering Physics and Research Center for Nanoscience and Nanotechnology, Institute of Technology Bandung, Ganesha 10, Bandung, 40132, Indonesia
| | - Yong-Mook Kang
- Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, South Korea
| | - Yoshio Bando
- International Research Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- Institute of Molecular Plus, Tianjin University, Nankai District, Tianjin, 300072, P. R. China
- Australian Institute of Innovative Materials, University of Wollongong, Squires Way, North Wollongong, NSW, 2500, Australia
| | - Yoshiyuki Sugahara
- Faculty of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan
- Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, 2-8-26 Nishiwaseda, Shinjuku, Tokyo, 169-0051, Japan
| | - Yusuke Yamauchi
- Key Laboratory of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland, 4072, Australia
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheunggu, Yongin-si, Gyeonggi-do, 446-701, South Korea
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Wang Y, Wang S, Li F, Wang Y, Zhang H, Sun C. Pt Nanoparticles Loaded on W 18O 49 Nanocables-rGO Nanocomposite as a Highly Active and Durable Catalyst for Methanol Electro-Oxidation. ACS OMEGA 2018; 3:16850-16857. [PMID: 30923778 PMCID: PMC6432879 DOI: 10.1021/acsomega.8b02942] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
Highly active and durable electrocatalysts are vital for commercialization of direct methanol fuel cells. In this work, a three-dimensional nanocomposite consisting of platinum nanoparticles, W18O49 nanocables, and reduced graphene oxide composite (Pt/W18O49 NCs-rGO) has been prepared as an electrocatalyst for methanol oxidation reaction (MOR). The catalyst is prepared through a two-step method. The W18O49 nanocables and the reduced graphene oxide composite are prepared by a solvothermal process. Then, Pt nanoparticles are loaded on the W18O49 nanocables and the reduced graphene oxide composite by a hydrogen reduction at ambient condition. The obtained catalyst has a special three-dimensional architecture consisting of two-dimensional nanosheets, assembled one-dimensional nanocables, and the loaded nanoparticles on their surface. The Pt/W18O49 NCs-rGO catalyst shows 1.56 time mass activities than the Pt/C, with the current density of the forward anodic peak reaching 1624 mA/mgPt at 0.854 V versus reversible hydrogen electrode potential in 0.1 M HClO4 and 0.5 M CH3OH mixed electrolyte. It also shows a strong antipoisoning property toward CO. For the durability testing, the current density of Pt/W18O49 NCs-rGO shows a 37% decay, whereas the current of Pt/C catalyst shows a 41% degradation from 600 to 3600 s at 0.7 V. The high activity toward MOR, good antipoisoning for intermediate products, and excellent stability are ascribed to strong metal-support interaction effects between the Pt nanoparticles and the W18O49 NCs.
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Affiliation(s)
- Yizhi Wang
- Beijing
Key Laboratory for Green Catalysis and Separation, College of Environmental
and Energy Engineering, Beijing University
of Technology, Beijing 100124, China
- CAS
Center for Excellence in Nanoscience, Beijing
Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China
| | - Shuo Wang
- Beijing
Key Laboratory for Green Catalysis and Separation, College of Environmental
and Energy Engineering, Beijing University
of Technology, Beijing 100124, China
| | - Fan Li
- Beijing
Key Laboratory for Green Catalysis and Separation, College of Environmental
and Energy Engineering, Beijing University
of Technology, Beijing 100124, China
| | - Yan Wang
- Beijing
Key Laboratory for Green Catalysis and Separation, College of Environmental
and Energy Engineering, Beijing University
of Technology, Beijing 100124, China
| | - Huairuo Zhang
- Theiss
Research, La Jolla, California 92037, United States
- Material
Measurement Laboratory, National Institute
of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Chunwen Sun
- CAS
Center for Excellence in Nanoscience, Beijing
Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China
- School
of Nanoscience and Technology, University
of Chinese Academy of Sciences, Beijing 100049, China
- Center on
Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China
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22
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Performance evaluation of nickel as anode catalyst for DMFC in acidic and alkaline medium. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1872-5813(18)30026-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Song J, Bazant MZ. Electrochemical Impedance Imaging via the Distribution of Diffusion Times. PHYSICAL REVIEW LETTERS 2018; 120:116001. [PMID: 29601735 DOI: 10.1103/physrevlett.120.116001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Indexed: 06/08/2023]
Abstract
We develop a mathematical framework to analyze electrochemical impedance spectra in terms of a distribution of diffusion times (DDT) for a parallel array of random finite-length Warburg (diffusion) or Gerischer (reaction-diffusion) circuit elements. A robust DDT inversion method is presented based on complex nonlinear least squares regression with Tikhonov regularization and illustrated for three cases of nanostructured electrodes for energy conversion: (i) a carbon nanotube supercapacitor, (ii) a silicon nanowire Li-ion battery, and (iii) a porous-carbon vanadium flow battery. The results demonstrate the feasibility of nondestructive "impedance imaging" to infer microstructural statistics of random, heterogeneous materials.
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Affiliation(s)
- Juhyun Song
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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24
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Galvanic exchange-formed ultra-low Pt loading on synthesized unique porous Ag-Pd nanotubes for increased active sites toward oxygen reduction reaction. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.12.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Bahrami K, Kamrani SN. Synthesis, characterization and application of graphene palladium porphyrin as a nanocatalyst for the coupling reactions such as: Suzuki‐Miyaura and Mizoroki‐Heck. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4102] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kiumars Bahrami
- Department of Organic Chemistry, Faculty of ChemistryRazi University Kermanshah 67149‐67346 Iran
- Nanoscience and Nanotechnology Research Center (NNRC)Razi University Kermanshah 67149‐67346 Iran
| | - Soheila Nakhjiri Kamrani
- Nanoscience and Nanotechnology Research Center (NNRC)Razi University Kermanshah 67149‐67346 Iran
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Jeong H, Kim JW, Park J, An J, Lee T, Prinz FB, Shim JH. Bimetallic Nickel/Ruthenium Catalysts Synthesized by Atomic Layer Deposition for Low-Temperature Direct Methanol Solid Oxide Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:30090-30098. [PMID: 27739300 DOI: 10.1021/acsami.6b08972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nickel and ruthenium bimetallic catalysts were heterogeneously synthesized via atomic layer deposition (ALD) for use as the anode of direct methanol solid oxide fuel cells (DMSOFCs) operating in a low-temperature range. The presence of highly dispersed ALD Ru islands over a porous Ni mesh was confirmed, and the Ni/ALD Ru anode microstructure was observed. Fuel cell tests were conducted using Ni-only and Ni/ALD Ru anodes with approximately 350 μm thick gadolinium-doped ceria electrolytes and platinum cathodes. The performance of fuel cells was assessed using pure methanol at operating temperatures of 300-400 °C. Micromorphological changes of the anode after cell operation were investigated, and the content of adsorbed carbon on the anode side of the operated samples was measured. The difference in the maximum power density between samples utilizing Ni/ALD Ru and Pt/ALD Ru, the latter being the best catalyst for direct methanol fuel cells, was observed to be less than 7% at 300 °C and 30% at 350 °C. The improved electrochemical activity of the Ni/ALD Ru anode compared to that of the Ni-only anode, along with the reduction of the number of catalytically active sites due to agglomeration of Ni and carbon formation on the Ni surface as compared to Pt, explains this decent performance.
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Affiliation(s)
- Heonjae Jeong
- Renewable Energy System Laboratory, School of Mechanical Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-713, South Korea
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign , 1206 W. Green St., Urbana, Illinois 61801, United States
| | - Jun Woo Kim
- Renewable Energy System Laboratory, School of Mechanical Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-713, South Korea
| | - Joonsuk Park
- Department of Materials Science and Engineering, Stanford University , 496 Lomita Mall, Stanford, California 94305, United States
| | - Jihwan An
- Manufacturing Systems and Design Engineering (MSDE) Program, Seoul National University of Science and Technology (SeoulTech) , 232 Gongneung-ro, Nowon-gu, Seoul 139-743, South Korea
| | - Tonghun Lee
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign , 1206 W. Green St., Urbana, Illinois 61801, United States
| | - Fritz B Prinz
- Department of Materials Science and Engineering, Stanford University , 496 Lomita Mall, Stanford, California 94305, United States
- Department of Mechanical Engineering, Stanford University , 440 Escondido Mall, Stanford, California 94305, United States
| | - Joon Hyung Shim
- Renewable Energy System Laboratory, School of Mechanical Engineering, Korea University , 145 Anam-ro, Seongbuk-gu, Seoul 136-713, South Korea
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29
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An advanced electrocatalyst of Pt decorated SnO2/C nanofibers for oxygen reduction reaction. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bollella P, Schulz C, Favero G, Mazzei F, Ludwig R, Gorton L, Antiochia R. Green Synthesis and Characterization of Gold and Silver Nanoparticles and their Application for Development of a Third Generation Lactose Biosensor. ELECTROANAL 2016. [DOI: 10.1002/elan.201600476] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Paolo Bollella
- Department of Chemistry and Drug Technologies; Sapienza University of Rome; P.le Aldo Moro 5 00185 - Rome Italy
| | - Christopher Schulz
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O.Box 124 SE-221 00 Lund Sweden
| | - Gabriele Favero
- Department of Chemistry and Drug Technologies; Sapienza University of Rome; P.le Aldo Moro 5 00185 - Rome Italy
| | - Franco Mazzei
- Department of Chemistry and Drug Technologies; Sapienza University of Rome; P.le Aldo Moro 5 00185 - Rome Italy
| | - Roland Ludwig
- Food Biotechnology Laboratory, Department of Food Science and Technology, BOKU -; University of Natural Resources and Life Sciences; Muthgasse 18, A- 1190 Vienna Austria
| | - Lo Gorton
- Department of Analytical Chemistry/Biochemistry and Structural Biology; Lund University; P. O.Box 124 SE-221 00 Lund Sweden
| | - Riccarda Antiochia
- Department of Chemistry and Drug Technologies; Sapienza University of Rome; P.le Aldo Moro 5 00185 - Rome Italy
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Wang Y, Cheng Q, Yuan T, Zhou Y, Zhang H, Zou Z, Fang J, Yang H. Controllable fabrication of ordered Pt nanorod array as catalytic electrode for passive direct methanol fuel cells. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(15)61077-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Yang J, Tan X, Qian Y, Li L, Xue Y, Dai Z, Wang H, Qu W, Chu Y. Methanol oxidation on Pt/CeO2@C–N electrocatalysts prepared by the in-situ carbonization of polyvinylpyrrolidone. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-0969-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Panomsuwan G, Saito N, Ishizaki T. Nitrogen-Doped Carbon Nanoparticle-Carbon Nanofiber Composite as an Efficient Metal-Free Cathode Catalyst for Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2016; 8:6962-6971. [PMID: 26908214 DOI: 10.1021/acsami.5b10493] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Metal-free nitrogen-doped carbon materials are currently considered at the forefront of potential alternative cathode catalysts for the oxygen reduction reaction (ORR) in fuel cell technology. Despite numerous efforts in this area over the past decade, rational design and development of a new catalyst system based on nitrogen-doped carbon materials via an innovative approach still present intriguing challenges in ORR catalysis research. Herein, a new kind of nitrogen-doped carbon nanoparticle-carbon nanofiber (NCNP-CNF) composite with highly efficient and stable ORR catalytic activity has been developed via a new approach assisted by a solution plasma process. The integration of NCNPs and CNFs by the solution plasma process can lead to a unique morphological feature and modify physicochemical properties. The NCNP-CNF composite exhibits a significantly enhanced ORR activity through a dominant four-electron pathway in an alkaline solution. The enhancement in ORR activity of NCNP-CNF composite can be attributed to the synergistic effects of good electron transport from highly graphitized CNFs as well as abundance of exposed catalytic sites and meso/macroporosity from NCNPs. More importantly, NCNP-CNF composite reveals excellent long-term durability and high tolerance to methanol crossover compared with those of a commercial 20 wt % supported on Vulcan XC-72. We expect that NCNP-CNF composite prepared by this synthetic approach can be a promising metal-free cathode catalyst candidate for ORR in fuel cells and metal-air batteries.
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Affiliation(s)
- Gasidit Panomsuwan
- Department of Materials Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology , 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
| | - Nagahiro Saito
- Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Social Innovation Design Center (SIDC), Institute of Innovation for Future Society, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST) , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Takahiro Ishizaki
- Department of Materials Science and Engineering, Faculty of Engineering, Shibaura Institute of Technology , 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
- Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST) , 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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Ramachandran K, Kalpana D, Sathishkumar Y, Lee YS, Ravichandran K, kumar GG. A facile green synthesis of silver nanoparticles using Piper betle biomass and its catalytic activity toward sensitive and selective nitrite detection. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2015.10.033] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Effects of calcination temperature and CeO2 contents on the performance of Pt/CeO2−CNTs hybrid nanotube catalysts for methanol oxidation. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-0931-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
Herein we report that the reaction of KMnO4 with cobalt nanoparticles coated with multiple graphene layers forms a promising catalyst toward water oxidation. The compound was characterized by scanning electron microscopy, energy-dispersive spectroscopy, high resolution transmission electron microscopy, X-ray diffraction, electronic spectroscopy, Fourier transform infrared spectroscopy, and atomic absorption spectroscopy. In addition to the Mn oxide-based characteristics of the catalyst, it is a conductive, self-healing, recycling, highly dispersible, magnetically separable, environmentally friendly, and nano-sized catalyst for water oxidation. The turnover frequency for the catalyst toward water oxidation is 0.1 and 0.05 (mmol O2 per mol Mn s) in the presence of cerium(iv) ammonium nitrate and photo-produced Ru(bpy)3(3+).
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Affiliation(s)
- Mohammad Mahdi Najafpour
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, 45137-66731, Iran
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Jeon Y, Kim DJ, Koh JK, Ji Y, Kim JH, Shul YG. Interface-designed Membranes with Shape-controlled Patterns for High-performance Polymer Electrolyte Membrane Fuel Cells. Sci Rep 2015; 5:16394. [PMID: 26552839 PMCID: PMC4639844 DOI: 10.1038/srep16394] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/25/2015] [Indexed: 11/20/2022] Open
Abstract
Polymer electrolyte membrane fuel cell is a promising zero-emission power generator for stationary/automotive applications. However, key issues, such as performance and costs, are still remained for an economical commercialization. Here, we fabricated a high-performance membrane electrode assembly (MEA) using an interfacial design based on well-arrayed micro-patterned membranes including circles, squares and hexagons with different sizes, which are produced by a facile elastomeric mold method. The best MEA performance is achieved using patterned Nafion membrane with a circle 2 μm in size, which exhibited a very high power density of 1906 mW/cm2 at 75 °C and Pt loading of 0.4 mg/cm2 with 73% improvement compared to the commercial membrane. The improved performance are attributed to the decreased MEA resistances and increased surface area for higher Pt utilization of over 80%. From these enhanced properties, it is possible to operate at lower Pt loading of 0.2 mg/cm2 with an outstanding performance of 1555 mW/cm2 and even at air/low humidity operations.
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Affiliation(s)
- Yukwon Jeon
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Dong Jun Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Jong Kwan Koh
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Yunseong Ji
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Jong Hak Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
| | - Yong-Gun Shul
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
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Balgis R, Arif AF, Mori T, Ogi T, Okuyama K, Anilkumar GM. Morphology-dependent electrocatalytic activity of nanostructured Pt/C particles from hybrid aerosol-colloid process. AIChE J 2015. [DOI: 10.1002/aic.15059] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ratna Balgis
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Aditya F. Arif
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Takahiro Mori
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Takashi Ogi
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Kikuo Okuyama
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Gopinathan M. Anilkumar
- Research and Development Center, Noritake Co., Ltd.; 300 Higashiyama Miyoshi Aichi 470-0293 Japan
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Chakraborty S, Babanova S, Rocha RC, Desireddy A, Artyushkova K, Boncella AE, Atanassov P, Martinez JS. A Hybrid DNA-Templated Gold Nanocluster For Enhanced Enzymatic Reduction of Oxygen. J Am Chem Soc 2015; 137:11678-87. [DOI: 10.1021/jacs.5b05338] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | - Sofia Babanova
- Center for Micro-Engineered Materials (CMEM) and Department of Chemical & Biological Engineering, The University of New Mexico, Advanced Materials Laboratory, 1001 University Blvd. SE, Albuquerque, New Mexico 87106, United States
| | | | | | - Kateryna Artyushkova
- Center for Micro-Engineered Materials (CMEM) and Department of Chemical & Biological Engineering, The University of New Mexico, Advanced Materials Laboratory, 1001 University Blvd. SE, Albuquerque, New Mexico 87106, United States
| | | | - Plamen Atanassov
- Center for Micro-Engineered Materials (CMEM) and Department of Chemical & Biological Engineering, The University of New Mexico, Advanced Materials Laboratory, 1001 University Blvd. SE, Albuquerque, New Mexico 87106, United States
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40
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Improved catalytic activity of cobalt core–platinum shell nanoparticles supported on surface functionalized graphene for methanol electro-oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.01.160] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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41
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Bae JH, Kang CM, Choi H, Kim BJ, Jang W, Lim SY, Kim HC, Chung TD. Nonfaradaic Nanoporous Electrochemistry for Conductometry at High Electrolyte Concentration. Anal Chem 2015; 87:2443-51. [DOI: 10.1021/ac504415c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Je Hyun Bae
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Chung Mu Kang
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Hyoungseon Choi
- Department
of Biomedical Engineering, College of Medicine and Institute
of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-744, Korea
| | - Beom Jin Kim
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Woohyuk Jang
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Sung Yul Lim
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
| | - Hee Chan Kim
- Department
of Biomedical Engineering, College of Medicine and Institute
of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-744, Korea
| | - Taek Dong Chung
- Department
of Chemistry, Seoul National University, Seoul 151-747, Korea
- Advanced Institute of Convergence Technology, Suwon-si, Gyeonggi-do 443-270, Korea
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42
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Habibi B, Delnavaz N. Pt–CeO2/reduced graphene oxide nanocomposite for the electrooxidation of formic acid and formaldehyde. RSC Adv 2015. [DOI: 10.1039/c5ra09770c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The Pt–CeO2/reduced graphene oxide nanocomposite on the carbon-ceramic electrode (Pt–CeO2/RGO/CCE) was prepared by a two-step electrodeposition process.
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Affiliation(s)
- Biuck Habibi
- Electroanalytical Chemistry Laboratory
- Department of Chemistry
- Faculty of Sciences
- Azarbaijan Shahid Madani University
- Tabriz
| | - Nasrin Delnavaz
- Electroanalytical Chemistry Laboratory
- Department of Chemistry
- Faculty of Sciences
- Azarbaijan Shahid Madani University
- Tabriz
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43
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Mondal A, Jana NR. Effect of size and oxidation state of platinum nanoparticles on the electrocatalytic performance of graphene-nanoparticle composites. RSC Adv 2015. [DOI: 10.1039/c5ra17087g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Size and oxidation state of Pt nanoparticles significantly influence the electrocatalytic performance of Pt–graphene nanocomposites for methanol oxidation and 2.2 nm Pt with variable oxidation states offers the best catalytic activity and durability.
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Affiliation(s)
- Avijit Mondal
- Centre for Advanced Materials
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
| | - Nikhil R. Jana
- Centre for Advanced Materials
- Indian Association for the Cultivation of Science
- Kolkata-700032
- India
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44
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Iavicoli I, Leso V, Ricciardi W, Hodson LL, Hoover MD. Opportunities and challenges of nanotechnology in the green economy. Environ Health 2014; 13:78. [PMID: 25294341 PMCID: PMC4201727 DOI: 10.1186/1476-069x-13-78] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 09/29/2014] [Indexed: 05/22/2023]
Abstract
In a world of finite resources and ecosystem capacity, the prevailing model of economic growth, founded on ever-increasing consumption of resources and emission pollutants, cannot be sustained any longer. In this context, the "green economy" concept has offered the opportunity to change the way that society manages the interaction of the environmental and economic domains. To enable society to build and sustain a green economy, the associated concept of "green nanotechnology" aims to exploit nano-innovations in materials science and engineering to generate products and processes that are energy efficient as well as economically and environmentally sustainable. These applications are expected to impact a large range of economic sectors, such as energy production and storage, clean up-technologies, as well as construction and related infrastructure industries. These solutions may offer the opportunities to reduce pressure on raw materials trading on renewable energy, to improve power delivery systems to be more reliable, efficient and safe as well as to use unconventional water sources or nano-enabled construction products therefore providing better ecosystem and livelihood conditions.However, the benefits of incorporating nanomaterials in green products and processes may bring challenges with them for environmental, health and safety risks, ethical and social issues, as well as uncertainty concerning market and consumer acceptance. Therefore, our aim is to examine the relationships among guiding principles for a green economy and opportunities for introducing nano-applications in this field as well as to critically analyze their practical challenges, especially related to the impact that they may have on the health and safety of workers involved in this innovative sector. These are principally due to the not fully known nanomaterial hazardous properties, as well as to the difficulties in characterizing exposure and defining emerging risks for the workforce. Interestingly, this review proposes action strategies for the assessment, management and communication of risks aimed to precautionary adopt preventive measures including formation and training of employees, collective and personal protective equipment, health surveillance programs to protect the health and safety of nano-workers. It finally underlines the importance that occupational health considerations will have on achieving an effectively sustainable development of nanotechnology.
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Affiliation(s)
- Ivo Iavicoli
- />Institute of Public Health, Catholic University of the Sacred Heart, Largo Francesco, Vito 1, 00168 Rome, Italy
| | - Veruscka Leso
- />Institute of Public Health, Catholic University of the Sacred Heart, Largo Francesco, Vito 1, 00168 Rome, Italy
| | - Walter Ricciardi
- />Institute of Public Health, Catholic University of the Sacred Heart, Largo Francesco, Vito 1, 00168 Rome, Italy
| | - Laura L Hodson
- />National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 4676 Columbia Parkway, MS C-14, Cincinnati, OH 45226 USA
| | - Mark D Hoover
- />National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, 1095 Willowdale Road, MS H2800, Morgantown, WV 26505 USA
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45
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Li N, Liu L, Yang F. Power generation enhanced by a polyaniline–phytic acid modified filter electrode integrating microbial fuel cell with membrane bioreactor. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Liu H, Cao Y, Wang F, Zhang W, Huang Y. Pig Bone Derived Hierarchical Porous Carbon-Supported Platinum Nanoparticles with Superior Electrocatalytic Activity Towards Oxygen Reduction Reaction. ELECTROANAL 2014. [DOI: 10.1002/elan.201400180] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Yang S, Luo X. Mesoporous nano/micro noble metal particles: synthesis and applications. NANOSCALE 2014; 6:4438-57. [PMID: 24676151 DOI: 10.1039/c3nr06858g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The morphology, size and composition often govern the physical and chemical properties of noble metal units with a size in the nano or micro scale. Thus, the controlled growth of noble metal crystals would help to tailor their unique properties and this would be followed by their practical application. Mesoporous nano/micro noble metal units are types of nanostructured material that have fascinating properties that can generate great potential for various applications. This review presents a general view on the growth mechanisms of porous noble metal units and is focused on recent progresses in their synthetic approaches. Then, their potential applications in the field of drug delivery, cell imaging and SERS substrates, as well as fuel cell catalysts are overviewed.
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Affiliation(s)
- Shengchun Yang
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, School of Science, Xi'an Jiaotong University, Shann Xi, 710049, People's Republic of China.
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48
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Wu J, Zheng H, Cheng H, Zhou L, Leong KC, Rajagopalan R, Too HP, Choi WK. Thermoporometry characterization of silica microparticles and nanowires. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2206-2215. [PMID: 24528207 DOI: 10.1021/la404419h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present the results of a systematic study on the porosity of silica microparticles and nanowires prepared by glancing angle deposition-metal-assisted chemical etching (GLAD-MACE) and interference lithography-metal-assisted chemical etching (IL-MACE) techniques using the thermoporometry (TPM) method. Good agreement was obtained between our TPM results and published data provided by the suppliers of silica microparticles. TPM characterization of the GLAD-MACE and IL-MACE nanowires was carried out on the basis of parameters obtained from TPM experiments on microparticles. Our nanowires showed a similar trend but lower values of the pore volume and surface area than nanowires prepared by MACE with AgNO3 solution. We attribute the enhanced bioanalysis performance of the GLAD-MACE nanowires based devices to the increased pore volume and total surface area of the nanowires.
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Affiliation(s)
- Jiaxin Wu
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore 117456
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49
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Xu X, Zhou Y, Lu J, Tian X, Zhu H, Liu J. Single-step synthesis of PtRu/N-doped graphene for methanol electrocatalytic oxidation. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2013.12.062] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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50
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Liu H, Cao Y, Wang F, Huang Y. Nitrogen-doped hierarchical lamellar porous carbon synthesized from the fish scale as support material for platinum nanoparticle electrocatalyst toward the oxygen reduction reaction. ACS APPLIED MATERIALS & INTERFACES 2014; 6:819-825. [PMID: 24359570 DOI: 10.1021/am403432h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel hierarchical lamellar porous carbon (HLPC) with high BET specific surface area of 2730 m(2) g(-1) and doped by nitrogen atoms has been synthesized from the fish scale without any post-synthesis treatment, and applied to support the platinum (Pt) nanoparticle (NP) catalysts (Pt/HLPC). The Pt NPs could be highly dispersed on the porous surface of HLPC with a narrow size distribution centered at ca. 2.0 nm. The results of the electrochemical analysis reveal that the electrochemical active surface area (ECSA) of Pt/HLPC is larger than the Pt NP electrocatalyst supported on the carbon black (Pt/Vulcan XC-72). Compared with the Pt/Vulcan XC-72, the Pt/HLPC exhibits larger current density, lower overpotential, and enhanced catalytic activity toward the oxygen reduction reaction (ORR) through the direct four-electron pathway. The improved catalytic activity is mainly attributed to the high BET specific surface area, hierarchical porous structures and the nitrogen-doped surface property of HLPC, indicating the superiority of HLPC as a promising support material for the ORR electrocatalysts.
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Affiliation(s)
- Haijing Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology , Beijing 100029, P. R. China
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