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Wang Q, Zhang C, Huo R, Zheng S, Liu A, Hui Y, Ji Y, Jin Q, Zhang Z, Tu Y, Zhu H, Du H. Novel Ag@NH 2-UiO-66(Zr) photocatalyst with controllable charge transfer pathways for efficient Cr(VI) remediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122046. [PMID: 39094410 DOI: 10.1016/j.jenvman.2024.122046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/24/2024] [Accepted: 07/28/2024] [Indexed: 08/04/2024]
Abstract
Rational fabrication of core-shell photocatalysts to hamper the charge recombination is extraordinarily essential to enhance photocatalytic activity. In this work, core-shell Ag@NH2-UiO-66 (Ag@NU) Schottky heterojunctions with low Ag content (1 wt%) were constructed by a two-step solvothermal method and adopted for Cr(VI) reduction under LED light. Typically, the one with the Ag: NH2-UiO-66 mass ratio (1 : 100) led to 100% Cr(VI) removal within 1 h, superior to bare NH2-UiO-66 and Ag/NH2-UiO-66 (Ag was directly decorated on NH2-UiO-66 surface). The enhanced photocatalytic activity was related to the migration of the electrons on the CB of NH2-UiO-66 to Ag NPs through a Schottky barrier, and thus the undesired charge carriers recombination was avoided. This result was also evidenced by Density functional theory (DFT) calculations. The computational simulations indicate that the introduction of Ag effectively narrowed the band gap of NH2-UiO-66, facilitating the transfer of photo-generated electrons, expanding the light absorption area, and significantly enhancing photocatalytic efficiency. Most importantly, such a core-shell structure can inhibit the formation of •O2-, letting the direct Cr(VI) reduction by photo-excited e-. In addition, this structure can also protect Ag from being oxidized by O2. Ten cyclic tests evidenced the Ag@NU had excellent chemical and structural stability. This research offers a novel strategy for regulating the Cr(VI) reduction by establishing core-shell photocatalytic materials.
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Affiliation(s)
- Qi Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Chao Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Rubin Huo
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu, 225009, China
| | - Shuzhen Zheng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Aoxiang Liu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yuxin Hui
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yun Ji
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qin Jin
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu, 225009, China
| | - Zhe Zhang
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu, 225009, China
| | - Yusong Tu
- College of Physics Science and Technology & Microelectronics Industry Research Institute, Yangzhou University, Jiangsu, 225009, China
| | - Huayue Zhu
- Insititute of Environmental Engineering Technology, Taizhou University, Taizhou, 318000, China
| | - Hao Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
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2
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Liu K, Qiao Z, Gao C. Preventing the Galvanic Replacement Reaction toward Unconventional Bimetallic Core-Shell Nanostructures. Molecules 2023; 28:5720. [PMID: 37570689 PMCID: PMC10419990 DOI: 10.3390/molecules28155720] [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: 06/30/2023] [Revised: 07/08/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
A bimetallic core-shell nanostructure is a versatile platform for achieving intriguing optical and catalytic properties. For a long time, this core-shell nanostructure has been limited to ones with noble metal cores. Otherwise, a galvanic replacement reaction easily occurs, leading to hollow nanostructures or completely disintegrated ones. In the past few years, great efforts have been devoted to preventing the galvanic replacement reaction, thus creating an unconventional class of core-shell nanostructures, each containing a less-stable-metal core and a noble metal shell. These new nanostructures have been demonstrated to show unique optical and catalytic properties. In this work, we first briefly summarize the strategies for synthesizing this type of unconventional core-shell nanostructures, such as the delicately designed thermodynamic control and kinetic control methods. Then, we discuss the effects of the core-shell nanostructure on the stabilization of the core nanocrystals and the emerging optical and catalytic properties. The use of the nanostructure for creating hollow/porous nanostructures is also discussed. At the end of this review, we discuss the remaining challenges associated with this unique core-shell nanostructure and provide our perspectives on the future development of the field.
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Affiliation(s)
| | | | - Chuanbo Gao
- Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, China; (K.L.); (Z.Q.)
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3
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Kim H, Park H, Kang M, Park JY. Plasmonic hot carrier-driven photoelectrochemical water splitting on antenna–reactor Pt/Ag/TiO 2 Schottky nanodiodes. J Chem Phys 2022; 157:084701. [DOI: 10.1063/5.0097713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Plasmonic photoelectrochemical (PEC) water splitting has excited immense interest, as it can overcome the intrinsic limitations of semiconductors, in terms of light absorption, by the localized-surface plasmon resonances effect. Here, to get insight into the role of plasmonic hot carriers in plasmonic water splitting, a rational design of an antenna–reactor type Pt/Ag/TiO2 metal–semiconductor Schottky nanodiode was fabricated and used as a photoanode. Using the designed PEC cell system combined with the Pt/Ag/TiO2 nanodiode, we show that the plasmonic hot carriers excited from Ag were utilized for the oxygen (O2) evolution reaction and, consequently, had a decisive role in the enhancement of the photocatalytic efficiency. These results were supported by finite-difference time-domain simulations, and the faradaic efficiency was measured by the amount of actual gas produced. Therefore, this study provides a deep understanding of the dynamics and mechanisms of plasmonic hot carriers in plasmonic-assisted PEC water splitting.
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Affiliation(s)
- Heeyoung Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Hyewon Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Mincheol Kang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
| | - Jeong Young Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Daejeon 34141, Republic of Korea
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4
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Contreras E, Nixon R, Litts C, Zhang W, Alcorn FM, Jain PK. Plasmon-Assisted Ammonia Electrosynthesis. J Am Chem Soc 2022; 144:10743-10751. [PMID: 35671395 DOI: 10.1021/jacs.2c01272] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Ammonia is a promising liquid-phase carrier for the storage, transport, and deployment of carbon-free energy. However, the realization of an ammonia economy is predicated on the availability of green methods for the production of ammonia powered by electricity from renewable sources or by solar energy. Here, we demonstrate the synthesis of ammonium from nitrate powered by a synergistic combination of electricity and light. We use an electrocatalyst composed of gold nanoparticles, which have dual attributes of electrochemical nitrate reduction activity and visible-light-harvesting ability due to their localized surface plasmon resonances. Plasmonic excitation of the electrocatalyst induces ammonium synthesis with up to a 15× boost in activity relative to conventional electrocatalysis. We devise a strategy to account for the effect of photothermal heating of the electrode surface, which allows the observed enhancement to be attributed to non-thermal effects such as energetic carriers and charged interfaces induced by plasmonic excitation. The synergy between electrochemical activation and plasmonic activation is the most optimal at a potential close to the onset of nitrate reduction. Plasmon-assisted electrochemistry presents an opportunity for conventional limits of electrocatalytic conversion to be surpassed due to non-equilibrium conditions generated by plasmonic excitation.
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Affiliation(s)
- Enrique Contreras
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Rachel Nixon
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Chloe Litts
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Wenxin Zhang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Francis M Alcorn
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Prashant K Jain
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.,Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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6
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Liu D, Yang N, Zeng Q, Liu H, Chen D, Cui P, Xu L, Hu C, Yang J. Core-shell Ag–Pt nanoparticles: A versatile platform for the synthesis of heterogeneous nanostructures towards catalyzing electrochemical reactions. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.04.053] [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]
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7
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Affiliation(s)
- Linfang Lu
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Shihui Zou
- Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Baizeng Fang
- Department of Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
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8
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Dix ST, Linic S. In-operando surface-sensitive probing of electrochemical reactions on nanoparticle electrocatalysts: Spectroscopic characterization of reaction intermediates and elementary steps of oxygen reduction reaction on Pt. J Catal 2021. [DOI: 10.1016/j.jcat.2021.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Gong S, Zhang YX, Niu Z. Recent Advances in Earth-Abundant Core/Noble-Metal Shell Nanoparticles for Electrocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02587] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Shuyan Gong
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Yu-Xiao Zhang
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
| | - Zhiqiang Niu
- Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
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10
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A novel method to regulate the morphology of silver nanostructure by galvanic replacement reaction with boric acid. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01339-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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11
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Ryu J, Park M, Cho J. Advanced Technologies for High-Energy Aluminum-Air Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1804784. [PMID: 30393999 DOI: 10.1002/adma.201804784] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/04/2018] [Indexed: 06/08/2023]
Abstract
Aluminum-air batteries are considered as next-generation batteries owing to their high energy density with the abundant reserves, low cost, and lightweight of aluminum. However, there are several hurdles to be overcome, such as the sluggish rate of the oxygen reduction reaction (ORR) at the air electrode, precipitation of aluminum hydroxides and oxides at the anode, and severe hydrogen evolution problems at the interface of the anode and the electrolyte. Here, recent advances in silver metal and metal-nitrogen-carbon-based ORR electrocatalysts, aluminum anodes, electrolytes, and the requirements of future research directions are mainly summarized.
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Affiliation(s)
- Jaechan Ryu
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50, UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Minjoon Park
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50, UNIST-gil, Ulsan, 44919, Republic of Korea
| | - Jaephil Cho
- Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50, UNIST-gil, Ulsan, 44919, Republic of Korea
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12
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Araujo TP, Quiroz J, Barbosa EC, Camargo PH. Understanding plasmonic catalysis with controlled nanomaterials based on catalytic and plasmonic metals. Curr Opin Colloid Interface Sci 2019. [DOI: 10.1016/j.cocis.2019.01.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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13
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Chen M, Zhang H, Ge Y, Yang S, Wang P, Fang Y. Surface-Nanostructured Single Silver Nanowire: A New One-Dimensional Microscale Surface-Enhanced Raman Scattering Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:15160-15165. [PMID: 30485107 DOI: 10.1021/acs.langmuir.8b02854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
One-dimensional microscale surface-enhanced Raman scattering (SERS)-active interfaces have been intriguing as a newly emerging class of SERS interfaces compared to conventional macroscale SERS substrates. In this work, a stable surface-nanostructured single silver nanowire was fabricated. The nanostructures on the nanowire are formed by nanoscale silver crystal dots with diameters of 20-50 nm. The SERS signals of the crystal violet probe molecules adsorbed on the nanostructures are dramatically enhanced by both electromagnetic and chemical effects. The hot spots generated at the junctions of adjacent nanoscale dots yield highly efficient surface plasmon resonance. Simultaneously, the charge transfer on the atomic-scale silver cluster located at the nanostructured interface causes an enhancement similar to Raman resonance. The intensity distributions of the SERS peaks on the surface-nanostructured single nanowire are characterized by SERS mapping. It is found that, although the intensities of the SERS peaks are different, their SERS mapping images show uniform SERS enhancement distributions, whereas the noticeable SERS intensity distributions on the single smooth silver nanowire are mainly located on the two ends of the nanowire. A large number of nanoscale crystal dots along with the atomic-scale silver clusters are uniformly and densely distributed on the surface of the single roughened nanowire; these structural attributes induce a uniform and large surface plasmon resonance and charge transfer enhancements on the entire surface of the nanowire. This work indicates that the surface-nanostructured single silver nanowire, synthesized using a quite simple preparation method, performs as an excellent one-dimensional microscale SERS substrate with uniform and high enhancement characteristics, which shows high potential for applications as a new class of SERS-active substrates. Furthermore, the higher enhancement factor of the microscale SERS interfaces can be achieved by introducing other roughened nanowires to assemble a dimer and a trimer as micro-SERS substrates, which is consistent with the dark-field measurements.
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Affiliation(s)
- Mengmeng Chen
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
| | - Huanhuan Zhang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
| | - Yue Ge
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
| | - Shuo Yang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
| | - Peijie Wang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
| | - Yan Fang
- The Beijing Key Laboratory for Nano-Photonics and Nano-Structures, Department of Physics , Capital Normal University , Beijing 100048 , China
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14
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Rao VG, Aslam U, Linic S. Chemical Requirement for Extracting Energetic Charge Carriers from Plasmonic Metal Nanoparticles to Perform Electron-Transfer Reactions. J Am Chem Soc 2018; 141:643-647. [DOI: 10.1021/jacs.8b11949] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Vishal Govind Rao
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Umar Aslam
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Suljo Linic
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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15
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Krishnan SK, Esparza R, Flores-Ruiz FJ, Padilla-Ortega E, Luna-Bárcenas G, Sanchez IC, Pal U. Seed-Mediated Growth of Ag@Au Nanodisks with Improved Chemical Stability and Surface-Enhanced Raman Scattering. ACS OMEGA 2018; 3:12600-12608. [PMID: 31457992 PMCID: PMC6644819 DOI: 10.1021/acsomega.8b02333] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 09/20/2018] [Indexed: 05/20/2023]
Abstract
Bimetallic Ag@Au nanoparticles (NPs) have received significant research interest because of their unique optical properties and molecular sensing ability through surface-enhanced Raman scattering (SERS). However, the synthesis of Ag@Au core-shell plasmonic nanostructures with precisely controlled size and shape remained a great challenge. Here, we report a simple approach for the synthesis of bimetallic Ag@Au nanodisks of about 13.5 nm thickness and different diameters through a seed-mediated growth process. The synthesis involves the conformal deposition of Au atoms at the corner sites of Ag nanoplate (AgNPL) seeds coupled with site-selective oxidative etching of AgNPL edges to generate Ag@Au nanodisks. The resultant Ag@Au nanodisks manifest significantly improved chemical stability and tunable localized surface plasmon resonance from the visible to the near-infrared spectral range. Moreover, in comparison to AgNPLs, the Ag@Au nanodisks showed greatly enhanced SERS performance with an enhancement factor up to 0.47 × 105, which is nearly 3-fold higher than that of the original AgNPLs (0.18 × 105). Furthermore, the Ag@Au nanodisks show a high sensitivity for detecting probe molecules such as crystal violet of concentration as low as 10-9 M and excellent reproducibility, with the SERS intensity fluctuation less than 12.5%. The synthesis route adapted for the controlled fabrication of Ag@Au nanodisks can be a potential platform for maneuvering other bimetallic plasmonic nanostructures useful for plasmonics and sensing applications.
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Affiliation(s)
- Siva Kumar Krishnan
- CONACYT-Instituto
de Física and Instituto de Física, Benemérita
Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla 72570, Mexico
- E-mail:
| | - Rodrigo Esparza
- Centro
de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Boulevard Juriquilla 3001, Santiago de Querétaro, Querétaro 76230, Mexico
| | - F. J. Flores-Ruiz
- CONACYT-Instituto
de Física and Instituto de Física, Benemérita
Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla 72570, Mexico
| | - Erika Padilla-Ortega
- Graduate
Multidisciplinary Program in Environmental Sciences, Autonomous University of San Luis Potosi, San Luis Potosi 78210, Mexico
| | | | - Isaac. C. Sanchez
- Department
of Chemical Engineering, The University
of Texas at Austin, Austin, Texas 78712, United States
| | - Umapada Pal
- CONACYT-Instituto
de Física and Instituto de Física, Benemérita
Universidad Autónoma de Puebla, Apdo. Postal J-48, Puebla 72570, Mexico
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16
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Feng J, Chen D, Sediq AS, Romeijn S, Tichelaar FD, Jiskoot W, Yang J, Koper MTM. Cathodic Corrosion of a Bulk Wire to Nonaggregated Functional Nanocrystals and Nanoalloys. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9532-9540. [PMID: 29446912 PMCID: PMC5865079 DOI: 10.1021/acsami.7b18105] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/15/2018] [Indexed: 06/08/2023]
Abstract
A key enabling step in leveraging the properties of nanoparticles (NPs) is to explore new, simple, controllable, and scalable nanotechnologies for their syntheses. Among "wet" methods, cathodic corrosion has been used to synthesize catalytic aggregates with some control over their size and preferential faceting. Here, we report on a modification of the cathodic corrosion method for producing a range of nonaggregated nanocrystals (Pt, Pd, Au, Ag, Cu, Rh, Ir, and Ni) and nanoalloys (Pt50Au50, Pd50Au50, and Ag xAu100- x) with potential for scaling up the production rate. The method employs poly(vinylpyrrolidone) (PVP) as a stabilizer in an electrolyte solution containing nonreducible cations (Na+, Ca2+), and cathodic corrosion of the corresponding wires takes place in the electrolyte under ultrasonication. The ultrasonication not only promotes particle-PVP interactions (enhancing NP dispersion and diluting locally high NP concentration) but also increases the production rate by a factor of ca. 5. Further increase in the production rate can be achieved through parallelization of electrodes to construct comb electrodes. With respect to applications, carbon-supported Pt NPs prepared by the new method exhibit catalytic activity and durability for methanol oxidation comparable or better than the commercial benchmark catalyst. A variety of Ag xAu100- x nanoalloys are characterized by ultraviolet-visible absorption spectroscopy and high-resolution transmission electron microscopy. The protocol for NP synthesis by cathodic corrosion should be a step toward its further use in academic research as well as in its practical upscaling.
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Affiliation(s)
- Jicheng Feng
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Dong Chen
- State
Key Laboratory of Multiphase Complex Systems, Institute of Process
Engineering, Chinese Academy of Sciences, 100190 Beijing, China
| | - Ahmad S. Sediq
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Stefan Romeijn
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Frans D. Tichelaar
- Kavli
Institute of NanoScience, Delft University
of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
| | - Wim Jiskoot
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
| | - Jun Yang
- State
Key Laboratory of Multiphase Complex Systems, Institute of Process
Engineering, Chinese Academy of Sciences, 100190 Beijing, China
| | - Marc T. M. Koper
- Catalysis
and Surface Chemistry, Leiden Institute of Chemistry and Division of BioTherapeutics,
Leiden Academic Center for Drug Research, Leiden University, 2300
RA Leiden, The Netherlands
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