1
|
Cui L, Zhang L, Li Z, Jing Z, Huang L, Zeng H. Giant enhancement of fluorescence resonance energy transfer based on nanoporous gold with small amount of residual silver. NANOTECHNOLOGY 2024; 35:195709. [PMID: 38241734 DOI: 10.1088/1361-6528/ad20a0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 01/19/2024] [Indexed: 01/21/2024]
Abstract
Fluorescence resonance energy transfer (FRET) was found strongly enhanced by plasmon resonance. In this work, Nanoporous Gold with small amount of residual silver was used to form nanoporous gold/organic molecular layer compound with PSS and PAH. The ratio of its specific gold and silver content is achieved by controlling the time of its dealloying. Layered films of polyelectrolyte multilayers were assembled between the donor-acceptor pairs and NPG films to control distance. The maximum of FRET enhancement of 80-fold on the fluorescence intensity between the donor-acceptor pairs (CFP-YFP) is observed at a distance of ∼10.5 nm from the NPG film. This Nanoporous Gold with small amount of residual silver not only enhanced FRET 4-fold more than nanoporous gold of only gold content almost, but also effectively realized the regulation of FRET enhancement. The ability to precisely measure and regulate the enhancement of FRET enables the rational selection of plasmonic nanotransducer dimensions for the particular biosensing application.
Collapse
Affiliation(s)
- Lianmin Cui
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Ling Zhang
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Zhexiao Li
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Zhiyu Jing
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Luyi Huang
- CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, People's Republic of China
| | - Heping Zeng
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China
- Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, People's Republic of China
| |
Collapse
|
2
|
Li Y, Li G, Wang J. Nanoporous gold with microporous structure prepared by sodium dodecyl sulfate-mediated electrochemical dealloying. NANOTECHNOLOGY 2024; 35:125602. [PMID: 38086062 DOI: 10.1088/1361-6528/ad14b6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024]
Abstract
Nanoporous gold (NPG) is a promising catalytic material for the oxidation of CO and methanol applications. However, NPGs are prone to extensive macroscopic cracking that often decrease mechanic properties of NPGs and depresses their catalytic action. To produce crack-free NPG with an ultra-finer porosity in room temperature, the anionic surfactant sodium dodecyl sulfate (SDS) was added in electrochemical dealloying process. SDS has the effect of reducing the surface diffusion of gold which hinder the initial coarsening of ligaments and prevents interior silver atoms from being exposed and dissolved. As a result, the pore and ligment size are finer, but higher residual silver of NPG samples. NPG with pore size down to 2 nm and the ligament 4.0 nm was successfully fabricated with 13.32 mM SDS in perchloric acid solution. The surface diffusion coefficient of Au atoms was 1.6 × 10-24m2·s-1, nearly 3 orders of magnitude smaller than that of Au atoms in the absence of SDS (2.8 × 10-21m2·s-1). Nanoindentation results demonstrated that high residual silver content made NPG samples harder and stiffer,the specific surface areas of NPG with 6.66 mM SDS was 190 m2g-1by BET. This work provided very important clues on how to control the crack free ultrafine nanoporous structure of other materials.
Collapse
Affiliation(s)
- Yaning Li
- State Key Laboratory of Porous Metal Materials, Northwest Institute for Non-ferrous Metal Research, Weiyang Road 96, Xi'an, Shaanxi 710016, People's Republic of China
| | - Guangzhong Li
- State Key Laboratory of Porous Metal Materials, Northwest Institute for Non-ferrous Metal Research, Weiyang Road 96, Xi'an, Shaanxi 710016, People's Republic of China
| | - Jian Wang
- State Key Laboratory of Porous Metal Materials, Northwest Institute for Non-ferrous Metal Research, Weiyang Road 96, Xi'an, Shaanxi 710016, People's Republic of China
| |
Collapse
|
3
|
Islam MS, Banik S, Collinson MM. Recent Advances in Bimetallic Nanoporous Gold Electrodes for Electrochemical Sensing. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2515. [PMID: 37764545 PMCID: PMC10535497 DOI: 10.3390/nano13182515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/22/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023]
Abstract
Bimetallic nanocomposites and nanoparticles have received tremendous interest recently because they often exhibit better properties than single-component materials. Improved electron transfer rates and the synergistic interactions between individual metals are two of the most beneficial attributes of these materials. In this review, we focus on bimetallic nanoporous gold (NPG) because of its importance in the field of electrochemical sensing coupled with the ease with which it can be made. NPG is a particularly important scaffold because of its unique properties, including biofouling resistance and ease of modification. In this review, several different methods to synthesize NPG, along with varying modification approaches are described. These include the use of ternary alloys, immersion-reduction (chemical, electrochemical, hybrid), co-electrodeposition-annealing, and under-potential deposition coupled with surface-limited redox replacement of NPG with different metal nanoparticles (e.g., Pt, Cu, Pd, Ni, Co, Fe, etc.). The review also describes the importance of fully characterizing these bimetallic nanocomposites and critically analyzing their structure, surface morphology, surface composition, and application in electrochemical sensing of chemical and biochemical species. The authors attempt to highlight the most recent and advanced techniques for designing non-enzymatic bimetallic electrochemical nanosensors. The review opens up a window for readers to obtain detailed knowledge about the formation and structure of bimetallic electrodes and their applications in electrochemical sensing.
Collapse
Affiliation(s)
| | | | - Maryanne M. Collinson
- Department of Chemistry, Virginia Commonwealth University, Richmond, VA 23284-2006, USA; (M.S.I.); (S.B.)
| |
Collapse
|
4
|
Breaking Down SERS Detection Limit: Engineering of a Nanoporous Platform for High Sensing and Technology. NANOMATERIALS 2022; 12:nano12101737. [PMID: 35630960 PMCID: PMC9143797 DOI: 10.3390/nano12101737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/04/2022] [Accepted: 05/17/2022] [Indexed: 02/04/2023]
Abstract
In this study, nanoporous gold (NPG) was synthesized by free corrosion dealloying of an amorphous precursor, Au20Cu48Ag7Pd5Si20 (at. %), in a mixture of nitric and hydrofluoric acid, starting from amorphous melt-spun ribbons. NPG revealed a 3D nanoporous structure composed of pores and multigrain ligaments of an average size of 60 nm. NPG was further anodized in oxalic acid at 8 V vs. Ag/AgCl reference electrode to obtain a bimodal morphology composed of ligaments disrupted in finer features. Both NPG and anodized samples (A-NPG) were found to be mechanically stable to bending and active for surface-enhanced Raman scattering (SERS). SERS activity of samples was investigated using 4,4′-bipyridine as a probe molecule. A detection limit of 10−16 M was found for both samples, but in A-NPG, the signal was strongly enhanced. The extremely high enhancement obtained for A-NPG is attributed both to the small size of ligaments and crystals of which they are made, as well as to the nanometric features resulting from anodization treatment. Such a microstructure showed homogenous SERS response in terms of average enhancement all across the surface, as demonstrated by mapping measurements. Furthermore, NPG and A-NPG were tested as electrodes for electrocatalytic applications, showing good properties. The engineering steps from the amorphous precursor to A-NPG led us to obtain a high-sensing platform, with extremely low detection limit and intrinsic properties, that might significantly contribute to the cutting-edge technology of the future.
Collapse
|
5
|
Kinetics‐Controlled Synthesis of {100}‐Facet‐Enclosed Gold Quasi‐Square Nanosheets with Curved Edges. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
6
|
Cruz-Navarro JA, Mendoza-Huizar LH, Salazar-Pereda V, Cobos-Murcia JÁ, Colorado-Peralta R, Álvarez-Romero GA. Progress in the use of electrodes modified with coordination compounds for methanol electro-oxidation. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
7
|
Müller D, Zámbó D, Dorfs D, Bigall NC. Cryoaerogels and Cryohydrogels as Efficient Electrocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007908. [PMID: 33749130 DOI: 10.1002/smll.202007908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/01/2021] [Indexed: 05/14/2023]
Abstract
Additive-free cryoaerogel coatings from noble metal nanoparticles are prepared and electrochemically investigated. By using liquid nitrogen or isopentane as cooling medium, two different superstructures are created for each type of noble metal nanoparticle. These materials (made from the same amount of particles) have superior morphological and catalytic properties as compared to simply immobilized, densely packed nanoparticles. The morphology of all materials is investigated with scanning electron microscopy (SEM). Electrochemically active surface areas (ECSAs) are calculated from cyclic voltammetry measurements. The catalytic activity is studied for the ethanol oxidation reaction (EOR). Both are found to be increased for superstructured materials prepared by cryoaerogelation. Furthermore, cryoaerogels with cellular to dendritic structure that arise from freezing with isopentane show the best catalytic performance and highest ECSA. Moreover, as a new class of materials, cryohydrogels are created for the first time by thawing flash-frozen nanoparticle solutions. Structure and morphology of these materials match with the corresponding types of cryoaerogels and are confirmed via SEM. Even the catalytic activity in EOR is in accordance with the results from cryoaerogel coatings. As a proof of concept, this approach offers a novel platform towards the easier and faster production of cryogelated materials for wet-chemical applications.
Collapse
Affiliation(s)
- Dennis Müller
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167, Hannover, Germany
- Laboratory for Nano and Quantum Engineering, Leibniz Universität Hannover, Schneiderberg 39, 30167, Hannover, Germany
| | - Dániel Zámbó
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167, Hannover, Germany
- Laboratory for Nano and Quantum Engineering, Leibniz Universität Hannover, Schneiderberg 39, 30167, Hannover, Germany
| | - Dirk Dorfs
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167, Hannover, Germany
- Laboratory for Nano and Quantum Engineering, Leibniz Universität Hannover, Schneiderberg 39, 30167, Hannover, Germany
- Cluster of Excellence PhoenixD, Photonics, Optics and Engineering-Innovation Across Disciplines, 30167, Hannover, Germany
| | - Nadja C Bigall
- Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstraße 3A, 30167, Hannover, Germany
- Laboratory for Nano and Quantum Engineering, Leibniz Universität Hannover, Schneiderberg 39, 30167, Hannover, Germany
- Cluster of Excellence PhoenixD, Photonics, Optics and Engineering-Innovation Across Disciplines, 30167, Hannover, Germany
| |
Collapse
|
8
|
From nano to macro: Hierarchical platinum superstructures synthesized using bicontinuous microemulsion for hydrogen evolution reaction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
9
|
Viswanathan P, Kim YJ, Hong JD. Nanoporous Silver Submicrocubes Layer by Layer Encapsulated with Polyelectrolyte Films: Nonenzymatic Catalysis for Glucose Monitoring. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3452-3460. [PMID: 32202428 DOI: 10.1021/acs.langmuir.9b03972] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This article describes the synthesis of nanoporous silver submicrocubes (Np-Ag) capped with poly(allylamine hydrochloride) PAH/poly(styrenesulfonate) PSS bilayers (Np-Ag(PAH/PSS)n, 1 ≤ n ≤ 4) via layer-by-layer (LBL) assembly for the electrochemical glucose sensing. The consecutive LBL encapsulation of Np-Ag (average size ≈530 nm) with positively charged PAH and negatively charged PSS layers was monitored by using ζ-potential analyses, which showed that the sign of the ζ-potential became positive (+10 mV) or negative (-22 mV) depending on the charge of the encapsulating species. The thickness of two PAH/PSS bilayers on the Np-Ag was estimated to be ∼4 nm (consistent with a literature value of ∼1 nm per PAH or PSS layer) on the basis of a high-resolution transmission electron microscopy image of the Np-Ag(PAH/PSS)2. Moreover, the high quality of the polyelectrolyte capping on Np-Ag was evidenced by the elemental mapping analysis of particles (obtained by using high-angle annular dark-field scanning transmission electron microscopy), which showed a uniform spatial distribution of C, N, and S (derived from PAH and PSS layers). Among the four different Np-Ag(PAH/PSS)n (1 ≤ n ≤ 4) electrodes, Np-Ag(PAH/PSS)2 exhibited the highest electrocatalytic activity toward glucose because of the optimal thickness and density of its polyelectrolyte films (fabricated onto Np-Ag). The (Np-Ag(PAH/PSS)2 electrode demonstrated a detection limit of 20 μM, a sensitivity limit of 472.15 μA mM-1 cm-2, and a wide range of detection for glucose at concentrations as high as 23.3 mM along with good selectivity toward glucose. The findings of this study are expected to contribute to improvements in the fabrication and stability of various particle-type catalysts on an electrode surface and to efforts to optimize the device performance using the LBL encapsulation technique.
Collapse
Affiliation(s)
- Perumal Viswanathan
- Department of Chemistry, Incheon National University, 119 Academy-roYeonsu-gu, Incheon 22012, Republic of Korea
| | - Young Jin Kim
- Department of Chemistry, Incheon National University, 119 Academy-roYeonsu-gu, Incheon 22012, Republic of Korea
| | - Jong Dal Hong
- Department of Chemistry, Incheon National University, 119 Academy-roYeonsu-gu, Incheon 22012, Republic of Korea
| |
Collapse
|
10
|
Wang D, Schaaf P. Synthesis and characterization of size controlled bimetallic nanosponges. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMetallic and bimetallic nanosponges with well-defined size and form have attracted increasing attention due to their unique structural properties and their potential for many applications. In this chapter, the recently developed methods for the synthesis and preparation of metallic and bimetallic nanosponges are presented. These methods can be mainly cataloged in two groups: dealloying-based methods and reduction reaction-based methods. Different topographical reconstruction methods for the investigation of their structural properties are then reviewed briefly. The optical properties of the metallic nanosponges are clearly different from those of the solid counterparts due to the tailored disordered structure. The recent advances in the exploration of the distinct linear and non-linear optical properties of the nanosponges are summarized.Graphical Abstract:
Collapse
|
11
|
Properties of Anti-CA125 antibody layers on screen-printed carbon electrodes modified by gold and platinum nanostructures. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.081] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
12
|
Zhang Y, Sun X, Nomura N, Fujita T. Hierarchical Nanoporous Copper Architectures via 3D Printing Technique for Highly Efficient Catalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1805432. [PMID: 31026109 DOI: 10.1002/smll.201805432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/22/2019] [Indexed: 06/09/2023]
Abstract
Nanoporous metals represent a class of functional materials with unique bicontinuous open porous structural properties, making them ideal candidates for various catalyst applications. However, the pursuit of nanoporous properties, extremely small pores, and high surface area, results in the restriction of mass transport. Herein, a free-standing hierarchical nanoporous Cu material, prepared by a selective laser melting 3D printing technique and a one-step dealloying process, is presented as a highly efficient electrocatalyst for methanol oxidation. It is demonstrated that the digitally controlled hierarchical structure with macro- and nano-scaled pores can be utilized for promoting and directing mass transport as well as for the enhancement of catalytic properties. This work highlights a facile, low-cost, and alternative strategy for hierarchical nanoporous structure design that can be applied to binary, ternary, and quaternary metal alloys for various functional applications.
Collapse
Affiliation(s)
- Yongzheng Zhang
- School of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi, 782-8502, Japan
| | - Xiaohao Sun
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Aoba-ku, Sendai, 980-8579, Japan
| | - Naoyuki Nomura
- Department of Materials Processing, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Aoba-ku, Sendai, 980-8579, Japan
| | - Takeshi Fujita
- School of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi, 782-8502, Japan
| |
Collapse
|
13
|
Sukeri A, de Carvalho EJ, Bertotti M. A novel approach for one-step fabrication of platinum-nanoporous gold film via oxygen bubble template with enhanced electrochemical activity. Electrochem commun 2019. [DOI: 10.1016/j.elecom.2019.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
14
|
Tomaschun G, Klüner T. Methanol oxidation on the Pt(321) surface: a theoretical approach on the role of surface morphology and surface coverage effects. Phys Chem Chem Phys 2019; 21:18227-18239. [DOI: 10.1039/c9cp03291f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigated methanol oxidation, decomposition and carbonylation reactions on a high indexed Pt(321) surface.
Collapse
Affiliation(s)
- Gabriele Tomaschun
- Department of Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
| | - Thorsten Klüner
- Department of Chemistry
- Carl von Ossietzky University Oldenburg
- 26129 Oldenburg
- Germany
| |
Collapse
|
15
|
Zhou Q, Qi L, Yang H, Xu C. Hierarchical nanoporous platinum–copper alloy nanoflowers as highly active catalysts for the hydrolytic dehydrogenation of ammonia borane. J Colloid Interface Sci 2018; 513:258-265. [DOI: 10.1016/j.jcis.2017.11.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/12/2017] [Accepted: 11/13/2017] [Indexed: 11/28/2022]
|
16
|
You G, Jiang J, Li M, Li L, Tang D, Zhang J, Zeng XC, He R. PtPd(111) Surface versus PtAu(111) Surface: Which One Is More Active for Methanol Oxidation? ACS Catal 2017. [DOI: 10.1021/acscatal.7b02698] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guojian You
- Key
Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest
University), Ministry of Education, College of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, People’s Republic of China
- Research
Institute for New Materials Technology and Chongqing Key Laboratory
of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing 402160, People’s Republic of China
| | - Jian Jiang
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Ming Li
- Key
Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest
University), Ministry of Education, College of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| | - Lei Li
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Dianyong Tang
- Research
Institute for New Materials Technology and Chongqing Key Laboratory
of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing 402160, People’s Republic of China
| | - Jin Zhang
- Research
Institute for New Materials Technology and Chongqing Key Laboratory
of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing 402160, People’s Republic of China
| | - Xiao Cheng Zeng
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Rongxing He
- Key
Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest
University), Ministry of Education, College of Chemistry and Chemical
Engineering, Southwest University, Chongqing 400715, People’s Republic of China
| |
Collapse
|
17
|
Yang W, Wu K, Yang W, Wang H, Lv X, Qian L, Yu T, Li Z, Zhou X, Okumu Barasa G, Yuan S, Jiang Y, Yang Z. Nanoporous Au-Ag shell with fast kinetics: integrating chemical and plasmonic catalysis. NANOTECHNOLOGY 2017; 28:425704. [PMID: 28782732 DOI: 10.1088/1361-6528/aa8470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanoporous noble metals and alloys are widely utilized as efficient catalysts, because they have high surface-to-volume ratios for sufficient active sites and induce molecule polarization through plasmon excitation as well. Herein, we demonstrate one approach to fabricate nanoporous Au-Ag shell. Such material represents the dual functions serving as efficient catalysts and high-performance surface-enhanced Raman scattering substrate. In situ spectrum acquisition can track the conversion of p-nitrothiophenol to 4, 4'-dimercapto-azobenzene at ambient temperature. In particular, as a result of chemical catalysis of Ag elements and strong plasmon-molecule coupling, catalytic kinetics of nanoporous Au-Ag shell is 79.2-123.8 times faster than Au nanoparticles (NPs), and 2.2-3.3 times faster than Ag NPs. This investigation offers a route to design superior catalysts to integrate chemical and plasmonic catalysis.
Collapse
Affiliation(s)
- Wenpeng Yang
- School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Sanzò G, Taurino I, Puppo F, Antiochia R, Gorton L, Favero G, Mazzei F, Carrara S, De Micheli G. A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H 2O 2 detection at low potential. Methods 2017; 129:89-95. [PMID: 28600228 DOI: 10.1016/j.ymeth.2017.06.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/13/2017] [Accepted: 06/03/2017] [Indexed: 10/19/2022] Open
Abstract
In this work, we have developed for the first time a method to make novel gold and platinum hybrid bimetallic nanostructures differing in shape and size. Au-Pt nanostructures were prepared by electrodeposition in two simple steps. The first step consists of the electrodeposition of nanocoral Au onto a gold substrate using hydrogen as a dynamic template in an ammonium chloride solution. After that, the Pt nanostructures were deposited onto the nanocoral Au organized in pores. Using Pt (II) and Pt (IV), we realized nanocoral Au decorated with Pt nanospheres and nanocoral Au decorated with Pt nanoflowers, respectively. The bimetallic nanostructures showed better capability to electrochemically oxidize hydrogen peroxide compared with nanocoral Au. Moreover, Au-Pt nanostructures were able to lower the potential of detection and a higher performance was obtained at a low applied potential. Then, glucose oxidase was immobilized onto the bimetallic Au-Pt nanostructure using cross-linking with glutaraldehyde. The biosensor was characterized by chronoamperometry at +0.15V vs. Ag pseudo-reference electrode (PRE) and showed good analytical performances with a linear range from 0.01 to 2.00mM and a sensitivity of 33.66µA/mMcm2. The good value of Kmapp (2.28mM) demonstrates that the hybrid nanostructure is a favorable environment for the enzyme. Moreover, the low working potential can minimize the interference from ascorbic acid and uric acid as well as reducing power consumption to effect sensing. The simple procedure to realize this nanostructure and to immobilize enzymes, as well as the analytical performances of the resulting devices, encourage the use of this technology for the development of biosensors for clinical analysis.
Collapse
Affiliation(s)
- Gabriella Sanzò
- Laboratory of Integrated Systems, EPFL - École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland; Biosensors Laboratory, Department of Chemistry Drug Technologies, Sapienza University of Rome, P.le Aldo Moro, 5-00185 Roma, Italy
| | - Irene Taurino
- Laboratory of Integrated Systems, EPFL - École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Francesca Puppo
- Laboratory of Integrated Systems, EPFL - École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Riccarda Antiochia
- Biosensors Laboratory, Department of Chemistry Drug Technologies, Sapienza University of Rome, P.le Aldo Moro, 5-00185 Roma, Italy
| | - Lo Gorton
- Department of Analytical Chemistry/Biochemistry, P.O. Box 124, 221 00 Lund, Sweden
| | - Gabriele Favero
- Biosensors Laboratory, Department of Chemistry Drug Technologies, Sapienza University of Rome, P.le Aldo Moro, 5-00185 Roma, Italy
| | - Franco Mazzei
- Biosensors Laboratory, Department of Chemistry Drug Technologies, Sapienza University of Rome, P.le Aldo Moro, 5-00185 Roma, Italy
| | - Sandro Carrara
- Laboratory of Integrated Systems, EPFL - École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Giovanni De Micheli
- Laboratory of Integrated Systems, EPFL - École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| |
Collapse
|
19
|
Fujita T. Hierarchical nanoporous metals as a path toward the ultimate three-dimensional functionality. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2017; 18:724-740. [PMID: 29057026 PMCID: PMC5642827 DOI: 10.1080/14686996.2017.1377047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 08/23/2017] [Accepted: 09/05/2017] [Indexed: 05/20/2023]
Abstract
Nanoporous metals prepared via dealloying or selective leaching of solid solution alloys and compounds represent an emerging class of materials. They possess a three-dimensional (3D) structure of randomly interpenetrating ligaments/nanopores with sizes between 5 nm and several tens of micrometers, which can be tuned by varying their preparation conditions (such as dealloying time and temperature) or additional thermal coarsening. As compared to other nanostructured materials, nanoporous metals have many advantages, including their bicontinuous structure, tunable pore sizes, bulk form, good electrical conductivity, and high structural stability. Therefore, nanoporous metals represent ideal 3D materials with versatile functionality, which can be utilized in various fields. In this review, we describe the recent applications of nanoporous metals in molecular detection, catalysis, 3D graphene synthesis, hierarchical pore formation, and additive manufacturing (3D printing) together with our own achievements in these areas. Finally, we discuss possible ways of realizing the ultimate 3D functionality beyond the scope of nanoporous metals.
Collapse
Affiliation(s)
- Takeshi Fujita
- WPI Advanced Institute for Materials Research, Tohoku University, Sendai, Japan
| |
Collapse
|
20
|
Sun J, Wang F, Liu Y, Ni Y, Zhou H, Guo CF, Chen S. Gold micromeshes as highly active electrocatalysts for methanol oxidation reaction. RSC Adv 2017. [DOI: 10.1039/c7ra02505j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high density of defects on the gold micromesh surface significantly enhances the electrochemical activity for the methanol oxidation reaction.
Collapse
Affiliation(s)
- Jingying Sun
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| | - Feng Wang
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| | - Yuan Liu
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| | - Yizhou Ni
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| | - Haiqing Zhou
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| | - Chuan Fei Guo
- Department of Materials Science & Engineering
- South University of Science & Technology of China
- Shenzhen
- China
| | - Shuo Chen
- Department of Physics & The Texas Center for Superconductivity
- University of Houston
- Houston
- USA
| |
Collapse
|
21
|
Dou J, Tang Y, Nguyen L, Tong X, Thapa PS, Tao FF. Oxidation of Cyclohexene Catalyzed by Nanoporous Au(Ag) in Liquid Phase. Catal Letters 2016. [DOI: 10.1007/s10562-016-1883-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
22
|
Zhao A, Zhang Z, Zhang P, Xiao S, Wang L, Dong Y, Yuan H, Li P, Sun Y, Jiang X, Xiao F. 3D nanoporous gold scaffold supported on graphene paper: Freestanding and flexible electrode with high loading of ultrafine PtCo alloy nanoparticles for electrochemical glucose sensing. Anal Chim Acta 2016; 938:63-71. [PMID: 27619087 DOI: 10.1016/j.aca.2016.08.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 07/28/2016] [Accepted: 08/09/2016] [Indexed: 11/25/2022]
Abstract
Recent advances in on-body wearable medical apparatus and implantable devices drive the development of light-weight and bendable electrochemical sensors, which require the design of high-performance flexible electrode system. In this work, we reported a new type of freestanding and flexible electrode based on graphene paper (GP) supported 3D monolithic nanoporous gold (NPG) scaffold (NPG/GP), which was further modified by a layer of highly dense, well dispersed and ultrafine binary PtCo alloy nanoparticles via a facile and effective ultrasonic electrodeposition method. Our results demonstrated that benefited from the synergistic effect of the electrocatalytically active PtCo alloy nanoparticles, the large-active-area and highly conductive 3D NPG scaffold, and the mechanically strong and stable GP electrode substrate, the resultant PtCo alloy nanoparticles modified NPG/GP (PtCo/NPG/GP) exhibited high mechanical strength and good electrochemical sensing performances toward nonenzymatic detection of glucose, including a wide linear range from 35 μM- to 30 mM, a low detection limit of 5 μM (S/N = 3) and a high sensitivity of 7.84 μA cm(-2) mM(-1) as well as good selectivity, long-term stability and reproducibility. The practical application of the proposed PtCo/NPG/GP has also been demonstrated in in vitro detection of blood glucose in real clinic samples.
Collapse
Affiliation(s)
- Anshun Zhao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Zhaowei Zhang
- Key Laboratory of Detection of Mycotoxins, Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Penghui Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Shuang Xiao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Lu Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Yue Dong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Hao Yuan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
| | - Peiwu Li
- Key Laboratory of Detection of Mycotoxins, Ministry of Agriculture, Oil Crops Research Institute of Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Yimin Sun
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, China
| | - Xueliang Jiang
- Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, China
| | - Fei Xiao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, China.
| |
Collapse
|
23
|
Lee MJ, Lim SH, Ha JM, Choi SM. Green Synthesis of High-Purity Mesoporous Gold Sponges Using Self-Assembly of Gold Nanoparticles Induced by Thiolated Poly(ethylene glycol). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5937-5945. [PMID: 27221347 DOI: 10.1021/acs.langmuir.6b01197] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A facile and green synthesis method for mesoporous gold sponges has been developed, which involves a simple mixing of a very small amount of thiolated-poly(ethylene glycol) (SH-PEG) and citrate-covered gold nanoparticles (Au NPs) in aqueous solution at room temperature. While SH-PEG molecules have been widely used as biocompatible hydrophilic capping agents for Au NPs for stable dispersion in aqueous solution, here they are used as destabilizing agents. When SH-PEG molecules are mixed with citrate-covered Au NPs at the molar ratio ranging from 3 to 20 (SH-PEG/Au NP), mesoporous gold sponges with randomly interconnected 3D network structures are formed within 2 to 3 h. This is driven by the destabilization of negatively charged citrate molecules on Au NPs by a small number of SH-PEG molecules bonded on the particle surface, which results in the decrease in zeta potential and thus the assembly of Au NPs into porous sponges. The use of very low concentration of SH-PEG (ca. 20-200 nM) in aqueous solution at room temperature makes the method highly eco-friendly as well as results in high-purity as-synthesized gold sponges (98.7 wt %). The mesoporous gold sponges fabricated with the present method exhibit a high SERS activity, making them highly applicable for sensitive SERS detection of molecules.
Collapse
Affiliation(s)
- Min-Jae Lee
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology , Daejeon 305-701, Republic of Korea
| | - Sung-Hwan Lim
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology , Daejeon 305-701, Republic of Korea
| | - Jae-Min Ha
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology , Daejeon 305-701, Republic of Korea
| | - Sung-Min Choi
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology , Daejeon 305-701, Republic of Korea
| |
Collapse
|
24
|
Sonochemical Formation of Ga-Pt Intermetallic Nanoparticles Embedded in Graphene and its Potential Use as an Electrocatalyst. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2015.12.193] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
25
|
Lai YH, Kuo SC, Hsieh YC, Tai YC, Hung WH, Jeng US. Electrochemically fabricated gold dendrites with underpotential deposited silver monolayers for a bimetallic SERS-active substrate. RSC Adv 2016. [DOI: 10.1039/c5ra27020k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
SERS of Ag-covered Au-dendrites (Ag–Au-Ds) outperforms that of Au-Ds at a specific 633 nm laser excitation, and is attributed to improved chemical mechanism (CM) SERS with the Ag–p-NTP bonding and the p-NTP molecular architecture.
Collapse
Affiliation(s)
- Ying-Huang Lai
- Department of Chemistry
- Tunghai University
- Taichung 40704
- Taiwan
| | - Shan-Chi Kuo
- Department of Chemistry
- Tunghai University
- Taichung 40704
- Taiwan
| | - Yun-Ching Hsieh
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Taiwan
| | - Yu-Chun Tai
- Department of Chemistry
- Tunghai University
- Taichung 40704
- Taiwan
| | - Wei-Hsiu Hung
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Taiwan
| | - U-Ser Jeng
- National Synchrotron Radiation Research Center
- Hsinchu 30076
- Taiwan
- Chemical Engineering Department
- National Tsing-Hua University
| |
Collapse
|
26
|
Sanetuntikul J, Ketpang K, Shanmugam S. Hierarchical Nanostructured Pt8Ti-TiO2/C as an Efficient and Durable Anode Catalyst for Direct Methanol Fuel Cells. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01390] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jakkid Sanetuntikul
- Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeongpung-Myeon, Dalseong-gun, Daegu 711-873, Republic of Korea
| | - Kriangsak Ketpang
- Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeongpung-Myeon, Dalseong-gun, Daegu 711-873, Republic of Korea
| | - Sangaraju Shanmugam
- Department of Energy Systems Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 50-1 Sang-Ri, Hyeongpung-Myeon, Dalseong-gun, Daegu 711-873, Republic of Korea
| |
Collapse
|
27
|
Zhang C, Huang B, Qian L, Yuan S, Wang S, Chen R. Electrochemical Biosensor Based on Nanoporous Au/CoO Core-Shell Material with Synergistic Catalysis. Chemphyschem 2015; 17:98-104. [DOI: 10.1002/cphc.201500854] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Zhang
- School of Physics; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| | - Bin Huang
- School of Mechanical Science and Engineering; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| | - Lihua Qian
- School of Physics; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| | - Songliu Yuan
- School of Physics; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| | - Shuai Wang
- School of Chemistry and Chemical Engineering; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| | - Rong Chen
- School of Mechanical Science and Engineering; Huazhong University of Science and Technology, 1037; Luoyu Road, Hongshan District Wuhan 430074 China
| |
Collapse
|
28
|
Zhang QL, Ju KJ, Huang XY, Wang AJ, Wei J, Feng JJ. Metformin mediated facile synthesis of AuPt alloyed nanochains with enhanced electrocatalytic properties for alcohol oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.09.112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
29
|
Zhu C, Du D, Eychmüller A, Lin Y. Engineering Ordered and Nonordered Porous Noble Metal Nanostructures: Synthesis, Assembly, and Their Applications in Electrochemistry. Chem Rev 2015; 115:8896-943. [DOI: 10.1021/acs.chemrev.5b00255] [Citation(s) in RCA: 502] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chengzhou Zhu
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
| | - Dan Du
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Key
Laboratory of Pesticide and Chemical Biology of the Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | | | - Yuehe Lin
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
30
|
Fu S, Zhu C, Du D, Lin Y. Facile One-Step Synthesis of Three-Dimensional Pd-Ag Bimetallic Alloy Networks and Their Electrocatalytic Activity toward Ethanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13842-8. [PMID: 26053942 DOI: 10.1021/acsami.5b01963] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The three-dimensional palladium networks and palladium-silver bimetallic alloy networks were synthesized at room temperature on a large scale using a rapid and simple strategy. The results revealed that the morphology of the networks is not affected by the composition. We demonstrated that the as-prepared unsupported networks exhibited excellent electrochemical activity and stability toward ethanol oxidation reaction in alkaline media due to the formation of palladium-silver alloys as well as the porous nanostructures. The results indicate that the well-defined three-dimensional palladium-silver bimetallic alloy networks are promising catalysts for fuel cells.
Collapse
Affiliation(s)
- Shaofang Fu
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Chengzhou Zhu
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
- ‡Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
31
|
Dutta S, Ray C, Mondal A, Mehetor SK, Sarkar S, Pal T. Aromaticity driven interfacial synthetic strategy for porous platinum nanostructure: An efficient electrocatalyst for methanol and formic acid oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.02.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
32
|
Li M, Su Y, Zhao J, Geng H, Zhang J, Zhang L, Yang C, Zhang Y. One-pot preparation of thin nanoporous copper foils with enhanced light absorption and SERS properties. CrystEngComm 2015. [DOI: 10.1039/c4ce01967a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
33
|
Chen A, Wang J, Wang Y, Jia Y, Gu J, Xie X, Pan D. Effects of pore size and residual Ag on electrocatalytic properties of nanoporous gold films prepared by pulse electrochemical dealloying. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.10.081] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
34
|
Plasma-ionic liquid reduction for synthesizing platinum nanoparticles with size dependent crystallinity. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.08.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
35
|
Pedireddy S, Lee HK, Tjiu WW, Phang IY, Tan HR, Chua SQ, Troadec C, Ling XY. One-step synthesis of zero-dimensional hollow nanoporous gold nanoparticles with enhanced methanol electrooxidation performance. Nat Commun 2014; 5:4947. [DOI: 10.1038/ncomms5947] [Citation(s) in RCA: 187] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 08/10/2014] [Indexed: 12/25/2022] Open
|
36
|
Shahid MM, Pandikumar A, Golsheikh AM, Huang NM, Lim HN. Enhanced electrocatalytic performance of cobalt oxide nanocubes incorporating reduced graphene oxide as a modified platinum electrode for methanol oxidation. RSC Adv 2014. [DOI: 10.1039/c4ra08952a] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cobalt oxide nanocubes incorporating reduced graphene oxide were prepared by a hydrothermal method and used for the electrocatalytic oxidation of methanol.
Collapse
Affiliation(s)
- Muhammad Mehmood Shahid
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
| | - Alagarsamy Pandikumar
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
| | - Amir Moradi Golsheikh
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
| | - Nay Ming Huang
- Low Dimensional Materials Research Centre
- Department of Physics
- Faculty of Science
- University of Malaya
- 50603 Kuala Lumpur, Malaysia
| | - Hong Ngee Lim
- Department of Chemistry
- Faculty of Science
- Universiti Putra Malaysia
- , Malaysia
- Functional Device Laboratory
| |
Collapse
|