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German N, Popov A, Ramanaviciene A. Reagentless Glucose Biosensor Based on Combination of Platinum Nanostructures and Polypyrrole Layer. BIOSENSORS 2024; 14:134. [PMID: 38534241 DOI: 10.3390/bios14030134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/22/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024]
Abstract
Two types of low-cost reagentless electrochemical glucose biosensors based on graphite rod (GR) electrodes were developed. The electrodes modified with electrochemically synthesized platinum nanostructures (PtNS), 1,10-phenanthroline-5,6-dione (PD), glucose oxidase (GOx) without and with a polypyrrole (Ppy) layer-(i) GR/PtNS/PD/GOx and (ii) GR/PtNS/PD/GOx/Ppy, respectively, were prepared and tested. Glucose biosensors based on GR/PtNS/PD/GOx and GR/PtNS/PD/GOx/Ppy electrodes were characterized by the sensitivity of 10.1 and 5.31 μA/(mM cm2), linear range (LR) up to 16.5 and 39.0 mM, limit of detection (LOD) of 0.198 and 0.561 mM, good reproducibility, and storage stability. The developed glucose biosensors based on GR/PtNS/PD/GOx/Ppy electrodes showed exceptional resistance to interfering compounds and proved to be highly efficient for the determination of glucose levels in blood serum.
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Affiliation(s)
- Natalija German
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
| | - Anton Popov
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
- NanoTechnas-Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 243, LT-03225 Vilnius, Lithuania
| | - Almira Ramanaviciene
- Department of Immunology and Bioelectrochemistry, State Research Institute Centre for Innovative Medicine, Santariskiu 5, LT-08406 Vilnius, Lithuania
- NanoTechnas-Center of Nanotechnology and Materials Science, Institute of Chemistry, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko str. 243, LT-03225 Vilnius, Lithuania
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2
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Sakaguchi T, Nakagawa N, Mine K, Janairo JIB, Kamada R, Omichinski JG, Sakaguchi K. Biomineralization through a Symmetry-Controlled Oligomeric Peptide. Biomimetics (Basel) 2023; 8:606. [PMID: 38132545 PMCID: PMC10742239 DOI: 10.3390/biomimetics8080606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 12/23/2023] Open
Abstract
Biomineralization peptides are versatile tools for generating nanostructures since they can make specific interactions with various inorganic metals, which can lead to the formation of intricate nanostructures. Previously, we examined the influence that multivalency has on inorganic structures formed by p53 tetramer-based biomineralization peptides and noted a connection between the geometry of the peptide and its ability to regulate nanostructure formation. To investigate the role of multivalency in nanostructure formation by biomineralization peptides more thoroughly, silver biomineralization peptides were engineered by linking them to additional self-assembling molecules based on coiled-coil peptides and multistranded DNA oligomers. Under mild reducing conditions at room temperature, these engineered biomineralization peptides self-assembled and formed silver nanostructures. The trimeric forms of the biomineralization peptides were the most efficient in forming a hexagonal disk nanostructure, with both the coiled-coil peptide and DNA-based multimeric forms. Together, the results suggest that the spatial arrangement of biomineralization peptides plays a more important role in regulating nanostructure formation than their valency.
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Affiliation(s)
- Tatsuya Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan; (T.S.); (N.N.); (K.M.); (R.K.)
- Department of Chemistry, Kurume University School of Medicine, Kurume 830-0011, Japan
| | - Natsumi Nakagawa
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan; (T.S.); (N.N.); (K.M.); (R.K.)
| | - Kenta Mine
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan; (T.S.); (N.N.); (K.M.); (R.K.)
| | | | - Rui Kamada
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan; (T.S.); (N.N.); (K.M.); (R.K.)
| | - James G. Omichinski
- Département de Biochimie et Médicine Moléculaire, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Kazuyasu Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan; (T.S.); (N.N.); (K.M.); (R.K.)
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3
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Williamson EM, Ghrist AM, Karadaghi LR, Smock SR, Barim G, Brutchey RL. Creating ground truth for nanocrystal morphology: a fully automated pipeline for unbiased transmission electron microscopy analysis. NANOSCALE 2022; 14:15327-15339. [PMID: 36214256 DOI: 10.1039/d2nr04292d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Control over colloidal nanocrystal morphology (size, size distribution, and shape) is important for tailoring the functionality of individual nanocrystals and their ensemble behavior. Despite this, traditional methods to quantify nanocrystal morphology are laborious. New developments in automated morphology classification will accelerate these analyses but the assessment of machine learning models is limited by human accuracy for ground truth, causing even unsupervised machine learning models to have inherent bias. Herein, we introduce synthetic image rendering to solve the ground truth problem of nanocrystal morphology classification. By simulating 2D images of nanocrystal shapes via a function of high-dimensional parameter space, we trained a convolutional neural network to link unique morphologies to their simulated parameters, defining nanocrystal morphology quantitatively rather than qualitatively. An automated pipeline then processes, quantitatively defines, and classifies nanocrystal morphology from experimental transmission electron microscopy (TEM) images. Using improved computer vision techniques, 42 650 nanocrystals were identified, assessed, and labeled with quantitative parameters, offering a 600-fold improvement in efficiency over best-practice manual measurements. A classification algorithm was trained with a prediction accuracy of 99.5%, which can successfully analyze a range of concave, convex, and irregular nanocrystal shapes. The resulting pipeline was applied to differentiating two syntheses of nominally cuboidal CsPbBr3 nanocrystals and uniquely classifying binary nickel sulfide nanocrystal phase based on morphology. This pipeline provides a simple, efficient, and unbiased method to quantify nanocrystal morphology and represents a practical route to construct large datasets with an absolute ground truth for training unbiased morphology-based machine learning algorithms.
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Affiliation(s)
- Emily M Williamson
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
| | - Aaron M Ghrist
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
| | - Lanja R Karadaghi
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
| | - Sara R Smock
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
| | - Gözde Barim
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
| | - Richard L Brutchey
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.
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4
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Xu H, Ma Y, Chen J, Zhang WX, Yang J. Electrocatalytic reduction of nitrate - a step towards a sustainable nitrogen cycle. Chem Soc Rev 2022; 51:2710-2758. [PMID: 35274646 DOI: 10.1039/d1cs00857a] [Citation(s) in RCA: 139] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Nitrate enrichment, which is mainly caused by the over-utilization of fertilisers and industrial sewage discharge, is a major global engineering challenge because of its negative influence on the environment and human health. To solve this serious problem, many technologies, such as the activated sludge method, reverse osmosis, ion exchange, adsorption, and electrodialysis, have been developed to reduce the nitrate levels in water bodies. However, the applications of these traditional techniques are limited by several drawbacks, such as a long sludge retention time, slow kinetics, and undesirable by-products. From an environmental perspective, the most promising nitrate reduction technology is enabled to convert nitrate into benign N2, and features low cost, high efficiency, and environmental friendliness. Recently, electrocatalytic nitrate reduction has been proven by satisfactory research achievements to be one of the most promising methods among these technologies. This review provides a comprehensive account of nitrate reduction using electrocatalysis methods. The fundamentals of electrocatalytic nitrate reduction, including the reaction mechanisms, reactor design principles, product detection methods, and performance evaluation methods, have been systematically summarised. A detailed introduction to electrocatalytic nitrate reduction on transition metals, especially noble metals and alloys, Cu-based electrocatalysts, and Fe-based electrocatalysts is provided, as they are essential for the accurate reporting of experimental results. The current challenges and potential opportunities in this field, including the innovation of material design systems, value-added product yields, and challenges for products beyond N2 and large-scale sewage treatment, are highlighted.
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Affiliation(s)
- Hui Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Yuanyuan Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
| | - Jun Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute of Innovative Materials, Innovation Campus, University of Wollongong, Wollongong, NSW 2522, Australia.
| | - Wei-Xian Zhang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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5
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Quinson J, Jensen KM. From platinum atoms in molecules to colloidal nanoparticles: A review on reduction, nucleation and growth mechanisms. Adv Colloid Interface Sci 2020; 286:102300. [PMID: 33166723 DOI: 10.1016/j.cis.2020.102300] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 12/24/2022]
Abstract
Platinum (Pt) is one of the most studied materials in catalysis today and considered for a wide range of applications: chemical synthesis, energy conversion, air treatment, water purification, sensing, medicine etc. As a limited and non-renewable resource, optimized used of Pt is key. Nanomaterial design offers multiple opportunities to make the most of Pt resources down to the atomic scale. In particular, colloidal syntheses of Pt nanoparticles are well documented and simple to implement, which accounts for the large interest in research and development. For further breakthroughs in the design of Pt nanomaterials, a deeper understanding of the intricate synthesis-structures-properties relations of Pt nanoparticles must be obtained. Understanding how Pt nanoparticles form from molecular precursors is both a challenging and rewarding area of investigation. It is directly relevant to develop improved Pt nanomaterials but is also a source of inspiration to design other precious metal nanostructures. Here, we review the current understanding of Pt nanoparticle formation. This review is aimed at readers with interest in Pt nanoparticles in general and their colloidal syntheses in particular. Readers with a strongest interest on the study of nanomaterial formation will find here the case study of Pt. The preferred model systems and characterization techniques used to perform the study of Pt nanoparticle syntheses are discussed. In light of recent achievements, further direction and areas of research are proposed.
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6
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Sun Q, Xu H, Du Y. Recent Achievements in Noble Metal Catalysts with Unique Nanostructures for Liquid Fuel Cells. CHEMSUSCHEM 2020; 13:2540-2551. [PMID: 32096317 DOI: 10.1002/cssc.201903381] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/29/2020] [Indexed: 06/10/2023]
Abstract
In recent years, research efforts have been focused on the design and fabrication of highly efficient catalysts for liquid fuel cells, because the use of these cells is an important approach for alleviating environmental pollution and energy crises. However, the limitations of the catalytic performance of industrial Pt/C have strongly hindered the development of these fuel cells. The catalyst morphology has a strong impact on its performance; nanostructured catalysts are preferred as they offer large specific surface area and more exposed active centers. In view of this, many catalysts with unique structures have been synthesized in recent years, all of which show excellent catalytic performance characteristics. Despite these achievements, few efforts have been made to survey this field comprehensively. Herein, the recent advances in catalysts for liquid fuel cells are summarized, with a focus on noble metal catalysts with unique morphologies such as nanowires, nanosheets, and assembly structures. Their formation mechanisms are discussed critically. The relationship between the unique morphologies and excellent performance of these catalysts is also explored. This work may provide guidelines for the further development of liquid fuel cells.
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Affiliation(s)
- Qiwen Sun
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Hui Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yukou Du
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
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7
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Dhanasekaran P, Lokesh K, Ojha PK, Sahu AK, Bhat SD, Kalpana D. Electrochemical deposition of three-dimensional platinum nanoflowers for high-performance polymer electrolyte fuel cells. J Colloid Interface Sci 2020; 572:198-206. [PMID: 32244080 DOI: 10.1016/j.jcis.2020.03.078] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/18/2020] [Accepted: 03/22/2020] [Indexed: 10/24/2022]
Abstract
In the present work, the three-dimensional ultra-fine platinum nanoflowers are directly deposited on carbon-coated gas diffusion layer electrode (C-GDL) by a single-step electrodeposition method towards the application of polymer electrolyte fuel cells. The surface morphology, particle size distribution, crystallinity, and chemical oxidation state of platinum nanoflowers are examined using various techniques. The morphological features of the Pt nanostructures are highly influenced by the difference in current density. Notabely, the Pt nanospheres converts into three-dimensional nanoflower with an increase in current density from -1.6 to -32 mA cm-2. Electrodeposited Pt catalyst on C-GDL as the cathode catalyst was fabricated and steady-state polarization studies were carried out. Mainly, the fuel cell performance is analysed considering the electrodeposited Pt morphology. Among the prepared electrocatalysts, the nanoflower shaped Pt catalyst exhibit a high peak power density of 660 mW cm-2 at 0.6 V in PEFC.
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Affiliation(s)
- P Dhanasekaran
- CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR-Madras Complex, Chennai 600 113, Tamil Nadu, India
| | - K Lokesh
- CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR-Madras Complex, Chennai 600 113, Tamil Nadu, India
| | - P K Ojha
- Naval Materials Research Laboratory, Addl Ambernath, Thane 421506, Maharashtra, India
| | - A K Sahu
- CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR-Madras Complex, Chennai 600 113, Tamil Nadu, India
| | - S D Bhat
- CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR-Madras Complex, Chennai 600 113, Tamil Nadu, India.
| | - D Kalpana
- CSIR-Central Electrochemical Research Institute - Madras Unit, CSIR-Madras Complex, Chennai 600 113, Tamil Nadu, India.
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8
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Jin L, Xu H, Chen C, Shang H, Wang Y, Wang C, Du Y. Porous Pt–Rh–Te nanotubes: an alleviated poisoning effect for ethanol electrooxidation. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01249d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of uniform and well-defined ternary 1D Pt–Rh–Te nanotubes with different compositions have been developed.
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Affiliation(s)
- Liujun Jin
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Hui Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Chunyan Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Hongyuan Shang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Yong Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
| | - Caiqin Wang
- College of Science & Institute of Materials Physics and Chemistry
- Nanjing Forestry University
- Nanjing 210037
- P. R. China
| | - Yukou Du
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- PR China
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9
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A direct “touch” approach for gold nanoflowers decoration on graphene/ionic liquid composite modified electrode with good properties for sensing bisphenol A. Talanta 2019; 191:400-408. [DOI: 10.1016/j.talanta.2018.08.093] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/27/2018] [Accepted: 08/31/2018] [Indexed: 12/19/2022]
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10
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Geng G, Wang Z, Chen P, Guan B, Yang C, Liu M. Platinized spherical supramolecular nanoassemblies of a porphyrin: facile synthesis and excellent catalytic recyclability. Phys Chem Chem Phys 2018. [PMID: 29537014 DOI: 10.1039/c8cp00173a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Porphyrin-based supramolecular nanoassemblies of a spherical morphology have been attracting broad interest owing to their wide application possibilities in numerous fields of paramount significance. Most of the existing assembly protocols, however, either suffer from the requirement of elaborately-designed yet tediously-synthesized ad hoc porphyrins, the use of surfactant templates, or accurate consideration of the experimental parameters etc. The initiation of a facile surfactant-free fabrication protocol performable under ambient conditions using commercial porphyrins as building blocks is strongly desired. We herein report that a commercial metal-free porphyrins, 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TPPNH2), could be facilely organized to form well-defined discrete spherical nanoassemblies at room temperature by means of a simple reprecipitation method. We further find that the as-manufactured TPPNH2 nanospheres could work as photocatalysts towards the reduction of potassium tetrachloroplatinate(ii), leading to their self-platinization and the production of platinum/porphyrin nanosphere nanocomposites, wherein ultrathin Pt nanoparticles of a size of ca. 3 nm are immobilized on the porphyrin nanospheres. Significantly, by taking the advantage of their easy sedimentation from aqueous suspensions, we show that the as-produced composites could serve as qualified heterogeneous nanocatalysts in terms of their excellent catalytic stability and recyclability towards the reduction of 4-nitrophenol, where the catalytic reactivity exhibits only trivial changes even after the reactions have been repeated 8 times continuously. Taking into account the general concerns of porphyrins- and Pt-based nanostructures, this might provide a facile method for the construction of spherical porphyrin nanostructures with self-platinization capability. Meanwhile, considering the high cost and scarcity of Pt, our nanocomposites with excellent stability and recyclability likely have a bright future of potential uses.
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Affiliation(s)
- Guangwei Geng
- Beijing National Laboratory for Molecular Science, CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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11
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Pedone D, Moglianetti M, De Luca E, Bardi G, Pompa PP. Platinum nanoparticles in nanobiomedicine. Chem Soc Rev 2018; 46:4951-4975. [PMID: 28696452 DOI: 10.1039/c7cs00152e] [Citation(s) in RCA: 227] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxidative stress-dependent inflammatory diseases represent a major concern for the population's health worldwide. Biocompatible nanomaterials with enzymatic properties could play a crucial role in the treatment of such pathologies. In this respect, platinum nanoparticles (PtNPs) are promising candidates, showing remarkable catalytic activity, able to reduce the intracellular reactive oxygen species (ROS) levels and impair the downstream pathways leading to inflammation. This review reports a critical overview of the growing evidence revealing the anti-inflammatory ability of PtNPs and their potential applications in nanomedicine. It provides a detailed description of the wide variety of synthetic methods recently developed, with particular attention to the aspects influencing biocompatibility. Special attention has been paid to the studies describing the toxicological profile of PtNPs with an attempt to draw critical conclusions. The emerging picture suggests that the material per se is not causing cytotoxicity, while other physicochemical features related to the synthesis and surface functionalization may play a crucial role in determining the observed impairment of cellular functions. The enzymatic activity of PtNPs is also summarized, analyzing their action against ROS produced by pathological conditions within the cells. In particular, we extensively discuss the potential of these properties in nanomedicine to down-regulate inflammatory pathways or to be employed as diagnostic tools with colorimetric readout. A brief overview of other biomedical applications of nanoplatinum is also presented.
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Affiliation(s)
- Deborah Pedone
- Istituto Italiano di Tecnologia, Nanobiointeractions & Nanodiagnostics, Via Morego 30, 16163 Genova, Italy.
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12
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Kim SM, Kim DJ, Park S. Nanospring electrochemical lithography (NEL): noble metal nanohelices. Chem Commun (Camb) 2018; 52:11255-11258. [PMID: 27709220 DOI: 10.1039/c6cc05925b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report three-dimensional helical Au nanostructures using anodized aluminum oxide (AAO) and the embedded Pd nanosprings, serving as primary and secondary templates, respectively. The resulting Au nanohelices exhibit strong SERS signals due to the electromagnetic field enhancement originating from the helical morphology; this behavior is seemingly analogous to that of a nano-gap enhancer. Nanospring electrochemical lithography (NEL) represents a new method for synthesizing complex helical nanostructures and has potential for application in materials science.
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Affiliation(s)
- Sang Min Kim
- Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Dae Jin Kim
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea.
| | - Sungho Park
- Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea and Department of Chemistry, Sungkyunkwan University, Suwon 440-746, South Korea.
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13
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14
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Ehrenburg MR, Danilov AI, Botryakova IG, Molodkina EB, Rudnev AV. Electroreduction of nitrate anions on cubic and polyoriented platinum nanoparticles modified by copper adatoms. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.08.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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Jang Y, Choi KH, Chung DY, Lee JE, Jung N, Sung YE. Self-Assembled Dendritic Pt Nanostructure with High-Index Facets as Highly Active and Durable Electrocatalyst for Oxygen Reduction. CHEMSUSCHEM 2017; 10:3063-3068. [PMID: 28657204 DOI: 10.1002/cssc.201700852] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Indexed: 06/07/2023]
Abstract
The durability issues of Pt catalyst should be resolved for the commercialization of proton exchange membrane fuel cells. Nanocrystal structures with high-index facets have been recently explored to solve the critical durability problem of fuel cell catalysts as Pt catalysts with high-index facets can preserve the ordered surfaces without change of the original structures. However, it is very difficult to develop effective and practical synthetic methods for Pt-based nanostructures with high-index facets. The current study describes a simple one-pot synthesis of self-assembled dendritic Pt nanostructures with electrochemically active and stable high-index facets. Pt nanodendrites exhibited 2 times higher ORR activity and superior durability (only 3.0 % activity loss after 10 000 potential cycles) than a commercial Pt/C. The enhanced catalytic performance was elucidated by the formation of well-organized dendritic structures with plenty of reactive interfaces among 5 nm-sized Pt particles and the coexistence of low- and high-index facets on the particles.
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Affiliation(s)
- Youngjin Jang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Schulich Faculty of Chemistry, Russell Berrie Nanotechnology Institute, Technion, Haifa, 32000, Israel
| | - Kwang-Hyun Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Dong Young Chung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ji Eun Lee
- Thermoelectric Conversion Research Center, Korea Electrotechnology Research Institute, Changwon, 51543, Republic of Korea
| | - Namgee Jung
- Graduate School of Energy Science and Technology, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Yung-Eun Sung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
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16
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Sakaguchi T, Janairo JIB, Lussier-Price M, Wada J, Omichinski JG, Sakaguchi K. Oligomerization enhances the binding affinity of a silver biomineralization peptide and catalyzes nanostructure formation. Sci Rep 2017; 7:1400. [PMID: 28469202 PMCID: PMC5431226 DOI: 10.1038/s41598-017-01442-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/28/2017] [Indexed: 01/27/2023] Open
Abstract
Binding affinity and specificity are crucial factors that influence nanostructure control by biomineralization peptides. In this paper, we analysed the role that the oligomeric state of a silver biomineralization peptide plays in regulating the morphology of silver nanostructure formation. Oligomerization was achieved by conjugating the silver specific TBP biomineralization peptide to the p53 tetramerization domain peptide (p53Tet). Interestingly, the TBP-p53Tet tetrameric peptide acted as a growth catalyst, controlling silver crystal growth, which resulted in the formation of hexagonal silver nanoplates without consuming the peptide. The TBP-p53Tet peptide caps the surface of the silver crystals, which enhances crystal growth on specific faces and thereby regulates silver nanostructure formation in a catalytic fashion. The present findings not only provide an efficient strategy for controlling silver nanostructure formation by biomineralization peptides, but they also demonstrate that in this case the oligomeric peptides play a unique catalytic role.
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Affiliation(s)
- Tatsuya Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Jose Isagani B Janairo
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Mathieu Lussier-Price
- Département de Biochimie et Médicine Moléculaire, Université de Montréal, C.P. 6128 Succursale Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Junya Wada
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - James G Omichinski
- Département de Biochimie et Médicine Moléculaire, Université de Montréal, C.P. 6128 Succursale Centre-Ville, Montréal, QC, H3C 3J7, Canada
| | - Kazuyasu Sakaguchi
- Laboratory of Biological Chemistry, Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan.
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17
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Wu J, Lan Z, Lin J, Huang M, Huang Y, Fan L, Luo G, Lin Y, Xie Y, Wei Y. Counter electrodes in dye-sensitized solar cells. Chem Soc Rev 2017; 46:5975-6023. [DOI: 10.1039/c6cs00752j] [Citation(s) in RCA: 480] [Impact Index Per Article: 68.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This article panoramically reviews the counter electrodes in dye-sensitized solar cells, which is of great significance for the development of photovoltaic and photoelectric devices.
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18
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Shen Y, Zhou Y, Gong B, Xiao K, Wang L, Xi J. One-pot synthesis of ultrafine decahedral platinum crystal decorated graphite nanosheets for the electro-oxidation of formic acid. J Catal 2017. [DOI: 10.1016/j.jcat.2016.11.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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19
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Wang W, Lv F, Lei B, Wan S, Luo M, Guo S. Tuning Nanowires and Nanotubes for Efficient Fuel-Cell Electrocatalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:10117-10141. [PMID: 27690335 DOI: 10.1002/adma.201601909] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 06/27/2016] [Indexed: 05/26/2023]
Abstract
Developing new synthetic methods for the controlled synthesis of Pt-based or non-Pt nanocatalysts with low or no Pt loading to facilitate sluggish cathodic oxygen reduction reaction (ORR) and organics oxidation reactions is the key in the development of fuel-cell technology. Various nanoparticles (NPs), with a range of size, shape, composition, and structure, have shown good potential to catalyze the sluggish cathodic and anodic reactions. In contrast to NPs, one-dimensional (1D) nanomaterials such as nanowires (NWs), and nanotubes (NTs), exhibit additional advantages associated with their anisotropy, unique structure, and surface properties. The prominent characteristics of NWs and NTs include fewer lattice boundaries, a lower number of surface defect sites, and easier electron and mass transport for better electrocatalytic activity and lower vulnerability to dissolution, Ostwald ripening, and aggregation than Pt NPs for enhanced stability. An overview of recent advances in tuning 1D nanostructured Pt-based, Pd-based, or 1D metal-free nanomaterials as advanced electrocatalysts is provided here, for boosting fuel-cell reactions with high activity and stability, including the oxygen reduction reaction (ORR), methanol oxidation reaction (MOR), and ethanol oxidation reaction (EOR). After highlighting the different strategies developed so far for the synthesis of Pt-based 1D nanomaterials with controlled size, shape, and composition, special emphasis is placed on the rational design of diverse NWs and NTs catalysts such as Pt-based NWs or NTs, non-Pt NTs, and carbon NTs with molecular engineering, etc. for enhancing the ORR, MOR, and EOR. Finally, some perspectives are highlighted on the development of more efficient fuel-cell electrocatalysts featuring high stability, low cost, and enhanced performance, which are the key factors in accelerating the commercialization of fuel-cell technology.
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Affiliation(s)
- Wei Wang
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Fan Lv
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Bo Lei
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Sheng Wan
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Mingchuan Luo
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Shaojun Guo
- Department of Materials Science and Engineering & Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
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20
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Wang Q, Tang Z, Wang L, Yang H, Yan W, Chen S. Morphology Control and Electro catalytic Activity towards Oxygen Reduction of Peptide-Templated Metal Nanomaterials: A Comparison between Au and Pt. ChemistrySelect 2016. [DOI: 10.1002/slct.201601362] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiannan Wang
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
| | - Zhenghua Tang
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
- Guangdong Provincial Key Lab of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou 510006 P. R. China
| | - Likai Wang
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
| | - Hongyu Yang
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
| | - Wei Yan
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
| | - Shaowei Chen
- New Energy Research Institute, School of Environment and Energy; South China University of Technology, Guangzhou Higher Education Mega Centre; Guangzhou, Guangdong 510006 P. R. China
- Department of Chemistry and Biochemistry; University of California; 1156 High Street Santa Cruz, California 95064 United States
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21
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Lee YW, Kwak DH, Park KW. Correlation between composition and structure of Pt xNi yalloy nanodendrites. JOURNAL OF THE KOREAN CRYSTAL GROWTH AND CRYSTAL TECHNOLOGY 2016. [DOI: 10.6111/jkcgct.2016.26.5.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Ngo HM, Lai ND, Ledoux-Rak I. High second-order nonlinear response of platinum nanoflowers: the role of surface corrugation. NANOSCALE 2016; 8:3489-3495. [PMID: 26795722 DOI: 10.1039/c5nr07571h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Platinum nanoflowers (PtNFs) were elaborated using the seed-mediated growth technique applied to monodisperse platinum nanoparticles (∼3.0 nm) synthesized by the chemical reduction method. The X-ray diffraction pattern confirmed the formation of face-centered-cubic platinum nanocrystals. We report the Harmonic Light Scattering (HLS) properties of PtNFs for six different diameters (∼7.0; 8.0; 10.0; 14.0; 20.0 and 31.0 nm). From these HLS data we infer, for the first time, large hyperpolarizability β values of PtNFs. These very high β values of PtNFs are assigned mainly to highly corrugated surfaces for nanoparticles with irregular shapes.
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Affiliation(s)
- Hoang Minh Ngo
- Laboratoire de Photonique Quantique et Moléculaire, UMR 8537, Ecole Normale Supérieure de Cachan, CentraleSupélec, CNRS, Université Paris-Saclay, 94235 Cachan, France.
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23
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Cao Y, Yang Y, Shan Y, Fu C, Long NV, Huang Z, Guo X, Nogami M. Large-scale template-free synthesis of ordered mesoporous platinum nanocubes and their electrocatalytic properties. NANOSCALE 2015; 7:19461-19467. [PMID: 26399438 DOI: 10.1039/c5nr05772h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Here we report a facile, one-pot and template-free approach to synthesize mesoporous monocrystalline Pt nanocubes with uniform shapes and sizes, in which small Pt particles with a size of ∼5 nm are three-dimensionally and periodically built up into cubes with a size of ∼50 nm. The forming process is illustrated through a novel meso-crystal self-assembly mechanism. Very interestingly, the mesoporous structures are ordered, which are thought to be beneficial to increase their catalytic activity. Compared with nonporous Pt nanoparticles and porous Pt nanoparticles without order, the ordered mesoporous Pt nanocubes exhibit a highly improved electrocatalytic ability for methanol and formic acid oxidation, and are potentially applicable as electrocatalysts for direct methanol and formic acid fuel cells. Furthermore, this approach can be used to synthesize other Pt-series metallic mesoporous nanoparticles, such as Pd.
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Affiliation(s)
- Yanqin Cao
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, PR China.
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24
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Višić B, Cohen H, Popovitz-Biro R, Tenne R, Sokolov VI, Abramova NV, Buyanovskaya AG, Dzvonkovskii SL, Lependina OL. Direct Synthesis of Palladium Catalyst on Supporting WS2Nanotubes and its Reactivity in Cross-Coupling Reactions. Chem Asian J 2015; 10:2234-9. [DOI: 10.1002/asia.201500271] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Indexed: 11/07/2022]
Affiliation(s)
| | - Hagai Cohen
- Weizmann Institute of Science; Rehovot Israel
| | | | | | - Viacheslav I. Sokolov
- Nesmeyanov Institute of Organoelement Compounds RAS; 28 Vavilov Street 119991 Moscow Russian Federation
| | - Natalya V. Abramova
- Nesmeyanov Institute of Organoelement Compounds RAS; 28 Vavilov Street 119991 Moscow Russian Federation
| | | | - Sergei L. Dzvonkovskii
- Nesmeyanov Institute of Organoelement Compounds RAS; 28 Vavilov Street 119991 Moscow Russian Federation
| | - Olga L. Lependina
- Nesmeyanov Institute of Organoelement Compounds RAS; 28 Vavilov Street 119991 Moscow Russian Federation
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25
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Atkinson RW, Unocic RR, Unocic KA, Veith GM, Zawodzinski TA, Papandrew AB. Vapor synthesis and thermal modification of supportless platinum-ruthenium nanotubes and application as methanol electrooxidation catalysts. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10115-10124. [PMID: 25905666 DOI: 10.1021/am508228b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Metallic, mixed-phase, and alloyed bimetallic Pt-Ru nanotubes were synthesized by a novel route based on the sublimation of metal acetylacetonate precursors and their subsequent vapor deposition within anodic alumina templates. Nanotube architectures were tuned by thermal annealing treatments. As-synthesized nanotubes are composed of nanoparticulate, metallic platinum and hydrous ruthenium oxide whose respective thicknesses depend on the sample chemical composition. The Pt-decorated, hydrous Ru oxide nanotubes may be thermally annealed to promote a series of chemical and physical changes to the nanotube structures, including alloy formation, crystallite growth, and morphological evolution. Annealed Pt-Ru alloy nanotubes and their as-synthesized analogs demonstrate relatively high specific activities for the oxidation of methanol. As-synthesized, mixed-phase Pt-Ru nanotubes (0.39 mA/cm(2)) and metallic alloyed Pt64Ru36NTs (0.33 mA/cm(2)) have considerably higher area-normalized activities than PtRu black (0.22 mA/cm(2)) at 0.65 V vs RHE.
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Affiliation(s)
- Robert W Atkinson
- †Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | | | | | | | - Thomas A Zawodzinski
- †Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Alexander B Papandrew
- †Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
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26
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Balouch A, Ali Umar A, Mawarnis ER, Md Saad SK, Mat Salleh M, Abd Rahman MY, Kityk IV, Oyama M. Synthesis of amorphous platinum nanofibers directly on an ITO substrate and its heterogeneous catalytic hydrogenation characterization. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7776-7785. [PMID: 25807116 DOI: 10.1021/acsami.5b01012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper reports a facile, solution-phase approach to synthesizing a one-dimensional amorphous face-centered-cubic (fcc) platinum (a-Pt) nanostructure (nanofibers) directly on an indium-tin oxide (ITO) substrate. The electron microscopy analysis result shows that the a-Pt nanofiber has a diameter and length of approximately 50 nm and 1 μm, respectively, and is grown in high density on the entire surface of the ITO substrate. The X-ray photoelectron spectroscopy analysis result further reveals that the a-Pt nanofibers feature metallic properties with highly reactive surface chemistry, promising novel performance in electrochemistry, catalysis, and sensors. A synergetic interplay between the formic acid reducing agent and the hexamethylenetetramine surfactant in the reduction of Pt ions is assumed as the driving force for the formation of the amorphous phase in the Pt nanostructure. The catalytic properties of a-Pt were examined in the acetone hydrogenation reaction under microwave irradiation. a-Pt shows excellent heterogeneous catalytic properties for converting acetone to isopropyl alcohol with turnover number and frequency as high as 400 and 140 min(-1), respectively. The preparation and formation mechanism of the a-Pt nanofibers will be discussed in detail in this paper.
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Affiliation(s)
- Aamna Balouch
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
- ‡National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
| | - Akrajas Ali Umar
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Elvy Rahmi Mawarnis
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Siti Khatijah Md Saad
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Muhamad Mat Salleh
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - Mohd Yusri Abd Rahman
- †Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - I V Kityk
- §Electrical Engineering Department, Institute of Electronic System, Technical University of Czestochowa, Czestochowa, Poland
| | - Munetaka Oyama
- ∥Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8520, Japan
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27
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Wang YJ, Zhao N, Fang B, Li H, Bi XT, Wang H. Carbon-Supported Pt-Based Alloy Electrocatalysts for the Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells: Particle Size, Shape, and Composition Manipulation and Their Impact to Activity. Chem Rev 2015; 115:3433-67. [DOI: 10.1021/cr500519c] [Citation(s) in RCA: 940] [Impact Index Per Article: 104.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Yan-Jie Wang
- Department
of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC Canada V6T 1Z3
- Vancouver International Clean-Tech Research Institute Inc., 4475 Wayburne Drive, Burnaby, Canada V5G 4X4
| | - Nana Zhao
- Vancouver International Clean-Tech Research Institute Inc., 4475 Wayburne Drive, Burnaby, Canada V5G 4X4
| | - Baizeng Fang
- Department
of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC Canada V6T 1Z3
| | - Hui Li
- Electrochemical
Materials, Energy, Mining and Environment, National Research Council Canada, 4250 Wesbrook Mall, Vancouver, BC, Canada V6T 1W5
| | - Xiaotao T. Bi
- Department
of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC Canada V6T 1Z3
| | - Haijiang Wang
- Electrochemical
Materials, Energy, Mining and Environment, National Research Council Canada, 4250 Wesbrook Mall, Vancouver, BC, Canada V6T 1W5
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28
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29
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Rana M, Chhetri M, Loukya B, Patil PK, Datta R, Gautam UK. High-yield synthesis of sub-10 nm Pt nanotetrahedra with bare ⟨111⟩ facets for efficient electrocatalytic applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4998-5005. [PMID: 25660263 DOI: 10.1021/acsami.5b00211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Unlike other shapes, the design of tetrahedral Pt nanocrystals (Pt-NTd), which have the largest number of Pt(111) surface atoms and highest catalytic activities toward the electron transfer reactions, has widely been considered a synthetic challenge due to their thermodynamic instability. Here, we show that, by inducing their nucleation on functionalized carbon, Pt NTds can be obtained with tunable sizes and high yields. The carbon support anchors the nanocrystals early and prevents their oriented attachment leading to nanowire formation. Therein, an in situ generated amine is crucial for stabilization of Pt-NTds, which can later be removed to expose the Pt(111) facets for higher catalytic efficiency. The bare nanocrystals exhibit much improved stability and electrocatalytic activity characteristic of Pt(111) toward oxygen reduction reaction (ORR) and methanol and formic acid oxidation reactions. For example, ∼90% of their activity was retained after 5000 potential cycles, while the ORR onset potential was recorded to be very high, 1.01 V vs reversible hydrogen electrode (RHE).
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Affiliation(s)
- Moumita Rana
- New Chemistry Unit, ∥International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research , Bangalore 560064, India
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30
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Wang Y, Chen P, Shen Y, Chen C, Yang C, Liu M. Visible-light-driven Ag/AgCl plasmonic photocatalysts via a surfactant-assisted protocol: enhanced catalytic performance by morphology evolution from near-spherical to 1D structures. Phys Chem Chem Phys 2015; 17:25182-90. [DOI: 10.1039/c5cp03618f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Fibrous Ag/AgCl structures with boosted photocatalytic performances have been fabricatedviaa one-pot surfactant-assisted morphology evolution from near-spherical to 1D architectures.
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Affiliation(s)
- Yanping Wang
- Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
| | - Penglei Chen
- Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
| | - Yunfan Shen
- Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
| | - Chuncheng Chen
- Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
| | - Changchun Yang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Henan
- People's Republic of China
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic of China
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31
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Feng H, Liu Y, Li J. Highly reduced graphene oxide supported Pt nanocomposites as highly efficient catalysts for methanol oxidation. Chem Commun (Camb) 2015; 51:2418-20. [DOI: 10.1039/c4cc09146a] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highly reduced graphene oxide by solvated electrons supported Pt nanocomposites shows highly efficient catalytic activity for methanol oxidation.
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Affiliation(s)
- Hongbin Feng
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- China
| | - Yong Liu
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- China
| | - Jinghong Li
- Department of Chemistry
- Beijing Key Laboratory for Microanalytical Methods and Instrumentation
- Tsinghua University
- Beijing 100084
- China
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32
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Ma Y, Xu L, Chen W, Zou C, Yang Y, Zhang L, Huang S. Evolution from small sized Au nanoparticles to hollow Pt/Au nanostructures with Pt nanorods and a mechanistic study. RSC Adv 2015. [DOI: 10.1039/c5ra21807a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
A facile method for synthesizing hollow Au/Pt nanostructures is reported; this strategy involves using small sized Au nanoparticles (NPs) as seeds and KI as growth modifier.
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Affiliation(s)
- Ying Ma
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Li Xu
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Wei Chen
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Chao Zou
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Yun Yang
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Lijie Zhang
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
| | - Shaoming Huang
- Nanomaterials and Chemistry Key Laboratory
- Wenzhou University
- Wenzhou
- P. R. China
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33
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Pearson A, O'Mullane AP. Nanoparticle–electrode collisions as a dynamic seeding route for the growth of metallic nanostructures. Chem Commun (Camb) 2015; 51:5410-3. [DOI: 10.1039/c4cc09614b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The collisions between colloidal metal nanoparticles and a carbon electrode were explored as a dynamic method for the electrodeposition of a diverse range of electrocatalytically active Ag and Au nanostructures whose morphology is dominated by the electrostatic interaction between the charge of the nanoparticle and metal salt.
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Affiliation(s)
- Andrew Pearson
- School of Applied Sciences
- RMIT University
- Melbourne
- Australia
| | - Anthony P. O'Mullane
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane
- Australia
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34
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Shan S, Luo J, Wu J, Kang N, Zhao W, Cronk H, Zhao Y, Joseph P, Petkov V, Zhong CJ. Nanoalloy catalysts for electrochemical energy conversion and storage reactions. RSC Adv 2014. [DOI: 10.1039/c4ra05943c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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35
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Lee H. Utilization of shape-controlled nanoparticles as catalysts with enhanced activity and selectivity. RSC Adv 2014. [DOI: 10.1039/c4ra05958a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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36
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Liu L, Zhang L, Kim SM, Park S. Helical metallic micro- and nanostructures: fabrication and application. NANOSCALE 2014; 6:9355-9365. [PMID: 24770884 DOI: 10.1039/c4nr00203b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Metal elements occupy more than 70% of the positions in the periodic table, and their use has accelerated human civilization due to their invaluable chemical and physical characteristics. With the rapid development of metals, various structures of microscopic metal particles have been fabricated and investigated as functional materials in scientific research and practical applications. The phrase 'structure determines properties' has been widely acknowledged as a golden rule in chemistry and materials science, especially when the size of small particles is in the micro- or nanoscale dimension. Helical metallic micro- and nanostructures with complex shapes have recently emerged and may be used for various useful applications such as photonics, sensors, actuators, micro-/nanorobotics, and micro-/nanoelectronics, based on their unique mechanical, electrical, and electromagnetic properties. This review paper specifically focuses on the fabrication and application of helical metallic structures with a size ranging from the micro- to nanoscale. The unusual spatial distribution of active atoms in helical metallic micro- and nanostructures and their helical morphology could offer new opportunities for applications beyond those of other conventional metallic and nonmetallic micro- and nanostructures.
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Affiliation(s)
- Lichun Liu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, 314-001, China
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37
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Qin YL, Wang JW, Zhang LL, Wang LM. Synthesis and Electrocatalytic Properties of Uniform Palladium Nanocubes by using Graphene Oxide as Surfactant and Support. ChemCatChem 2014. [DOI: 10.1002/cctc.201402084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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38
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Murugappan G, Parthasarathy M. Bio-inspired morphological evolution of zinc oxide nanostructures on a tunable enzyme platform. Enzyme Microb Technol 2014; 61-62:13-6. [PMID: 24910331 DOI: 10.1016/j.enzmictec.2014.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 04/06/2014] [Accepted: 04/11/2014] [Indexed: 11/27/2022]
Abstract
Diamine oxidase is a copper-containing enzyme with interesting structural dynamics sensitive to environmental conditions. The present work explores the applicability of the system as a tunable platform for the shape and size selective synthesis of zinc oxide nanoparticles under ambient conditions. Significant changes in the nanoscale morphology of ZnO have been observed, using scanning electron microscopy, with respect to changes in pH and gas atmosphere of the medium. More specifically, hexagonal plates of nanoscale ZnO were formed at pH below the isoelectric point of the enzyme and spherical particles at alkaline pH. Interestingly the average particle size of ZnO nanostructures increases with increasing oxygen content at acidic pH while the opposite trend is noticed at alkaline pH. The observations are explained on the basis of changes in the enzyme's surface charge, conformation and redox potential using a combination of techniques like zeta potential measurements, FTIR spectroscopy, fluorescence spectroscopy, open circuit potential studies and cyclic voltammetry. Thus the present work demonstrates the applicability of an enzyme as a dynamic bio-template for the synthesis of a multitude of ZnO nanostructures which are expected to add newer insight into bottom-up fabrication of oxide nanostructures.
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Affiliation(s)
- Gunavadhi Murugappan
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur, Tamil Nadu 613 401, India
| | - Meera Parthasarathy
- Centre for Nanotechnology & Advanced Biomaterials, School of Chemical & Biotechnology, SASTRA University, Thanjavur, Tamil Nadu 613 401, India.
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Chakrapani K, Sampath S. The morphology dependent electrocatalytic activity of Ir nanostructures towards oxygen reduction. Phys Chem Chem Phys 2014; 16:16815-23. [DOI: 10.1039/c4cp01882f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Oxygen reduction on Ir nanoparticles and nanochains in acidic and alkaline media.
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Affiliation(s)
- Kalapu Chakrapani
- Department of Inorganic and Physical chemistry
- Indian Institute of Science
- Bangalore, India
| | - Srinivasan Sampath
- Department of Inorganic and Physical chemistry
- Indian Institute of Science
- Bangalore, India
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Katsounaros I, Cherevko S, Zeradjanin AR, Mayrhofer KJJ. Oxygen Electrochemistry as a Cornerstone for Sustainable Energy Conversion. Angew Chem Int Ed Engl 2013; 53:102-21. [DOI: 10.1002/anie.201306588] [Citation(s) in RCA: 1039] [Impact Index Per Article: 94.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2013] [Indexed: 11/09/2022]
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41
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Katsounaros I, Cherevko S, Zeradjanin AR, Mayrhofer KJJ. Die Elektrochemie des Sauerstoffs als Meilenstein für eine nachhaltige Energieumwandlung. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201306588] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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42
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Wu X, Tan L, Chen D, Meng X, Tang F. Icosahedral gold-platinum alloy nanocrystals in hollow silica: a highly active and stable catalyst for Ullmann reactions. Chem Commun (Camb) 2013; 50:539-41. [PMID: 24266020 DOI: 10.1039/c3cc46383d] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Icosahedral Au-Pt alloy nanocrystals are prepared in porous hollow silica nanospheres via a hydrothermal method without using capping agents. These nanoparticles with unique shape and structure exhibit excellent catalytic activity and stability in Ullmann reactions.
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Affiliation(s)
- Xiaoli Wu
- Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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44
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Sahu SC, Samantara AK, Satpati B, Bhattacharjee S, Jena BK. A facile approach for in situ synthesis of graphene-branched-Pt hybrid nanostructures with excellent electrochemical performance. NANOSCALE 2013; 5:11265-11274. [PMID: 24088741 DOI: 10.1039/c3nr03372d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A facile and green approach for the synthesis of highly electroactive branched Pt nanostructures well dispersed on graphene has been developed by in situ reduction of graphene oxides and Pt(iv) ions in an aqueous medium. The as-synthesized branched Pt and graphene hybrid nanomaterials (GR-BPtNs) were thoroughly characterized using Transmission Electron Microscope (TEM), UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA) and Raman spectroscopy. This report clearly exploits the decisive role of the graphene support, the pH of the solution and the stabiliser on shaping the branched morphology of the Pt nanostructures well dispersed on graphene. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy (EIS) measurements were employed to investigate the electrocatalytic performance and durability of GR-BPtNs towards methanol oxidation and oxygen reduction. The results reveal that the synergetic effect of the graphene support and the branched morphology triggers electrocatalytic performance and robust tolerance to surface poisoning of GR-BPtNs.
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Affiliation(s)
- Subash Chandra Sahu
- Colloids & Materials Chemistry, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar-751013, India.
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Leong GJ, Schulze MC, Strand MB, Maloney D, Frisco SL, Dinh HN, Pivovar B, Richards RM. Shape-directed platinum nanoparticle synthesis: nanoscale design of novel catalysts. Appl Organomet Chem 2013. [DOI: 10.1002/aoc.3048] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- G. Jeremy Leong
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
- Hydrogen Technologies and Systems Center; National Renewable Energy Laboratory; Golden CO 80401 USA
| | - Maxwell C. Schulze
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
| | - Matthew B Strand
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
| | - David Maloney
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
| | - Sarah L. Frisco
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
| | - Huyen N. Dinh
- Hydrogen Technologies and Systems Center; National Renewable Energy Laboratory; Golden CO 80401 USA
| | - Bryan Pivovar
- Hydrogen Technologies and Systems Center; National Renewable Energy Laboratory; Golden CO 80401 USA
| | - Ryan M. Richards
- Department of Chemistry and Geochemistry; Colorado School of Mines; Golden Colorado 80401 USA
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Lee CL, Tsai YL, Chen CW. Specific and mass activity of silver nanocube and nanoparticle-based catalysts for electroless copper deposition. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.04.116] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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47
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Zhou B, Sun Z, Li D, Zhang T, Deng L, Liu YN. Platinum nanostructures via self-assembly of an amyloid-like peptide: a novel electrocatalyst for the oxygen reduction. NANOSCALE 2013; 5:2669-2673. [PMID: 23463381 DOI: 10.1039/c3nr33998j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
An aniline-GGAAKLVFF peptide (AFP) was prepared by solid-phase synthesis. The peptide can readily self-assemble into fibrils. Platinum nanoparticles (Pt NPs) were directly immobilized on the surface of the AFP fibrils via electrostatic interaction. Compared to other currently available techniques for the fabrication of metal-peptide fibrils, the noncovalent functionalization strategy is able to deposit nanoparticles on peptide fibrils with different morphologies and high metal loading, which is important for applications in catalysis, electronic materials and other corresponding fields. The Pt-AFP fibrils were employed to modify the electrode, which exhibits high electrocatalytic activities towards oxygen reduction. Thus, the Pt-AFP fibrils hold great potential for polymer electrolyte fuel cells and other electrochemical applications.
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Affiliation(s)
- Binbin Zhou
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, PR China
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Das RS, Singh B, Banerjee R, Mukhopadhyay S. PVP stabilized Pt nano particles catalyzed de-oxygenation of phenoxazine group by hydrazine in physiological buffer media: surfactant competes with reactants for the same surface sites. Dalton Trans 2013; 42:4068-80. [PMID: 23340587 DOI: 10.1039/c2dt32007j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PVP capped platinum nano particles (PNP) of 5 nm diameter were prepared and characterized as homogeneous and of spherical nature. At physiological pH range (6.0-8.0), these PNP catalyze the deoxygenation of phenoxazine group containing resazurin (1) by hydrazine. The observed rate constants (k(o)), increase linearly with [PNP] at constant [1] and [Hydrazine]; but first increase and then after reaching a maximum it decrease with increase in [1] as well as in [Hydrazine]. The k(o) values increase linearly with 1/[H(+)] indicating N(2)H(4) as the reducing species that generates from the PNP assisted deprotonation of N(2)H(5)(+). The kinetic observations suggest Langmuir-Hinshelwood type surface reaction mechanism where both 1 and hydrazine are adsorbed on nano particles surface and compete for the same sites. Interestingly, the surfactant molecules, polyvinylpyrrolidone (PVP), though do not take part into reduction reaction but having same type of functional groups as reactants, competes with them for the same surface sites. Adsorption on PNP with same type of functional group is further supported by the FTIR spectra of Pt-PVP and Pt-1. Thus on increasing [PVP], k(o) decreases linearly and only when [PVP] is held constant, the plot of k(o) vs. [PNP] passes through the origin indicating the insignificance of uncatalyzed reaction. The plot of ln k(o) vs. [1] or [Hydrazine] shows two different linear zones with different exponent values with respect to [1] and [Hydrazine]. This indicates that along with the complex heterogeneous surface adsorption processes, the mutual interactions between the reactants are also changing with the relative concentrations of reactants or, in general, with the molar ratio ([Hydrazine]/[1]).
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Parapat RY, Wijaya M, Schwarze M, Selve S, Willinger M, Schomäcker R. Particle shape optimization by changing from an isotropic to an anisotropic nanostructure: preparation of highly active and stable supported Pt catalysts in microemulsions. NANOSCALE 2013; 5:796-805. [PMID: 23235742 DOI: 10.1039/c2nr32122j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We recently introduced a new method to synthesize an active and stable Pt catalyst, namely thermo-destabilization of microemulsions (see R. Y. Parapat, V. Parwoto, M. Schwarze, B. Zhang, D. S. Su and R. Schomäcker, J. Mater. Chem., 2012, 22 (23), 11605-11614). We are able to produce Pt nanocrystals with a small size (2.5 nm) of an isotropic structure i.e. truncated octahedral and deposit them well on support materials. Although we have obtained good results, the performance of the catalyst still needed to be improved and optimized. We followed the strategy to retain the small size but change the shape to an anisotropic structure of Pt nanocrystals which produces more active sites by means of a weaker reducing agent. We found that our catalysts are more active than those we reported before and even show the potential to be applied in a challenging reaction such as hydrogenation of levulinic acid.
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Affiliation(s)
- Riny Y Parapat
- Technische Universität Berlin, Strasse des 17. Juni 124, 10623 Berlin, Germany. Institut Teknologi Nasional (Itenas), Jl. PHH. Mustafa No. 23, 40124 Bandung, Indonesia
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Balouch A, Umar AA, Tan ST, Nafisah S, Md Saad SK, Salleh MM, Oyama M. Fibrous, ultra-small nanorod-constructed platinum nanocubes directly grown on the ITO substrate and their heterogeneous catalysis application. RSC Adv 2013. [DOI: 10.1039/c3ra43298j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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