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Nieukirk BD, Tang R, Hughes RA, Neretina S. Site-Selective Deposition of Silica Nanoframes and Nanocages onto Faceted Gold Nanostructures Using a Primer-free Tetraethyl Orthosilicate Synthesis. ACS NANO 2024; 18:19257-19267. [PMID: 38984856 DOI: 10.1021/acsnano.4c05258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
The Stöber method for forming spherical silica colloids is well-established as one of the pillars of colloidal synthesis. In a modified form, it has been extensively used to deposit both porous and protective shells over metal nanomaterials. Current best-practice techniques require that the vitreophobic surface of metal nanoparticles be primed with a surface ligand to promote silica deposition. Although such techniques have proved highly successful in forming core-shell configurations, the site-selective deposition of silica onto preselected areas of faceted metal nanostructures has proved far more challenging. Herein, a primer-free TEOS-based synthesis is demonstrated that is capable of forming architecturally complex nanoframes and nanocages on the pristine surfaces of faceted gold nanostructures. The devised synthesis overcomes vitreophobicity using elevated TEOS concentrations that trigger silica nucleation along the low-coordination sites where gold facets meet. Continued deposition sees the emergence of a well-connected frame followed by the lateral infilling of the openings formed over gold facets. With growth readily terminated at any point in this sequence, the synthesis distinguishes itself in being able to achieve patterned and tunable silica depositions expressing interfaces that are uncorrupted by primers. The so-formed structures are demonstrated as template materials capable of asserting high-level control over synthesis and assembly processes by using the deposited silica as a mask that deactivates selected areas against these processes while allowing them to proceed elsewhere. The work, hence, extends the capabilities and versatility of TEOS-based syntheses and provides pathways for forming multicomponent nanostructures and nanoassemblies with structurally engineered properties.
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Affiliation(s)
- Brendan D Nieukirk
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Runze Tang
- College of Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Robert A Hughes
- College of Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Svetlana Neretina
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
- College of Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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Fernández-Calzado A, Calvo-Villoslada A, Fernández P, Sotillo B. ZnO:CuO Composites Obtained by Rapid Joule Heating for Photocatalysis. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3502. [PMID: 39063796 PMCID: PMC11278348 DOI: 10.3390/ma17143502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 07/02/2024] [Accepted: 07/09/2024] [Indexed: 07/28/2024]
Abstract
Semiconductor oxides belonging to various families are ideal candidates for application in photocatalytic processes. One of the challenges facing photocatalytic processes today is improving their efficiency under sunlight irradiation. In this study, the growth and characterization of semiconductor oxide nanostructures and composites based on the ZnO and CuO families are proposed. The selected growth method is the resistive heating of Zn and Cu wires to produce the corresponding oxides, combined with galvanic corrosion of Zn. An exhaustive characterization of the materials obtained has been carried out using techniques based on scanning electron microscopy and optical spectroscopies. The method we have followed and the conditions used in this study present promising results, not only from a degradation efficiency point of view but also because it is a cheap, easy, and fast growth method. These characteristics are essential in order to scale the process beyond the laboratory.
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Affiliation(s)
| | | | - Paloma Fernández
- Materials Physics Department, Faculty of Physics, Complutense University of Madrid, 28040 Madrid, Spain; (A.F.-C.); (A.C.-V.); (B.S.)
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Legaspi EDR, Regulacio MD. Nanocomposites of Cu 2O with plasmonic metals (Au, Ag): design, synthesis, and photocatalytic applications. NANOSCALE ADVANCES 2023; 5:5683-5704. [PMID: 37881695 PMCID: PMC10597568 DOI: 10.1039/d3na00712j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 09/22/2023] [Indexed: 10/27/2023]
Abstract
Metal-semiconductor nanocomposites have been utilized in a multitude of applications in a wide array of fields, prompting substantial interest from different scientific sectors. Of particular interest are semiconductors paired with plasmonic metals due to the unique optical properties that arise from the individual interactions of these materials with light and the intercomponent movement of charge carriers in their heterostructure. This review focuses on the pairing of Cu2O semiconductor with strongly plasmonic metals, particularly Au and Ag. The design and synthesis of Au-Cu2O and Ag-Cu2O nanostructures, along with ternary nanostructures composed of the three components, are described, with in-depth discussion on the synthesis techniques and tunable parameters. The effects of compositing on the optical and electronic properties of the nanocomposites in the context of photocatalysis are discussed as well. Concluding remarks and potential areas for exploration are presented in the last section.
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Affiliation(s)
- Enrico Daniel R Legaspi
- Institute of Chemistry, University of the Philippines Diliman Quezon City 1101 Philippines
- Materials Science and Engineering Program, University of the Philippines Diliman Quezon City 1101 Philippines
| | - Michelle D Regulacio
- Institute of Chemistry, University of the Philippines Diliman Quezon City 1101 Philippines
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Duan WL, Liu X, Luan J, Jiao GR, Jiang ZY, Yan F. Preparation, structure and photocatalytic degradation property of a copper-based complex and its derivative material. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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Liu JL, Jiang B, Han GZ. Recent Developments on Noble Metal Based Microparticles for Their Applications in Organic Catalysis. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999200427080644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Noble metal microparticles have been employed as desired catalysts for a number
of classical organic chemical reactions due to their unique physicochemical properties.
Currently, in order to obtain more benefits for practical applications such as low cost, easy
separation and high selectivity, many efforts of scientists are devoted to constructing composite
microparticles in which noble metals are coupled with other materials. In this paper,
we summarize some recent research developments on noble metal based microparticles for
their catalytic applications in organic synthesis. Among them, application of the gold and
silver based microparticles is the focus of this paper for their relatively low cost and the
diversity of preparation methods. Furthermore, the challenges and prospects of noble metal
based microparticles for their applications in organic catalysis are also discussed.
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Affiliation(s)
- Jian-Long Liu
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Bo Jiang
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Guo-Zhi Han
- College of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing, 211816, China
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Yoon DK, Kumar A, Lee DG, Lee J, Kwon T, Choi J, Jin T, Shim JH, Lee IS. Metal@SiO 2 Core-Shells with Self-Arrested Migrating Core. NANO LETTERS 2019; 19:3627-3633. [PMID: 31071266 DOI: 10.1021/acs.nanolett.9b00653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Developing easy and customizable strategies for the directional structure modulation of multicomponent nanosystems to influence and optimize their properties are a paramount but challenging task in nanoscience. Here, we demonstrate highly controlled eccentric off-center positioning of metal-core in metal@silica core-shells by utilizing an in situ generated biphasic silica-based intraparticle solid-solid interface. In the synthetic strategy, by including Ca2+-ions in silica-shell and successive oxidative and reductive annealing at high temperature, a unique hairline-biphasic interface is evolved via the heat-induced concentric radial segregation of calcium silicate phase at the interior and normal silica phase at the exterior of core-shell, which can effectively arrest the outwardly migrating metal-core within rubbery calcium silicate phase, affording various eccentric core-shells, where core-positions are flexibly controlled by the annealing time and amounts of initially added Ca2+-ions. In the structure-property correlation study, the strategy allows fine-tuning of dipolar interaction-based blocking temperatures and magnetic anisotropies of different eccentric core-shells as the function of variable off-center distance of magnetic core without changing the overall size of nanoparticles. This work demonstrates the discovery and potential application of biphasic solid-solid media interface in controlling the heat-induced migration of metal nanocrystals and opens the avenues for exploiting the rarely studied high-temperature solid-state nanocrystal conversion chemistry and migratory behavior for directional nanostructure engineering.
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Zhang S, Xu X, Zhang G, Liu B, Yang J. One-pot one-step synthesis of Au@SiO2 core–shell nanoparticles and their shell-thickness-dependent fluorescent properties. RSC Adv 2019; 9:17674-17678. [PMID: 35520584 PMCID: PMC9064591 DOI: 10.1039/c9ra02543j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/30/2019] [Indexed: 12/28/2022] Open
Abstract
Au@SiO2 core–shell nanoparticles with tunable Au core size and silica shell thickness were prepared by a facile one-pot one-step method.
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Affiliation(s)
- Shan Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
| | - Xiaochuan Xu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
| | - Guoyu Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
| | - Jianhui Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education)
- Shaanxi Key Laboratory of Physico-Inorganic Chemistry
- College of Chemistry & Materials Science
- Northwest University
- Xi'an 710069
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Chen M, Xiao C, Wang C, Liu H, Huang H, Yan D. Fabrication of tubular braid reinforced PMIA nanofiber membrane with mussel-inspired Ag nanoparticles and its superior performance for the reduction of 4-nitrophenol. NANOSCALE 2018; 10:19835-19845. [PMID: 30334561 DOI: 10.1039/c8nr06398b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A novel tubular braid reinforced (TBR) PMIA/CA-PEI/Ag nanofiber membrane for application in dynamic catalysis was introduced in this study. The preparation method of the TBR PMIA/CA-PEI/Ag nanofiber membrane was facile and efficient. The TBR PMIA/CA-PEI/Ag nanofiber membrane was characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and thermal gravimetric analysis (TGA). The mechanical properties were evaluated by a universal material testing machine. The tensile strength of TBR nanofiber membrane exceeded 500 MPa, whereas that of the nanofiber membrane without reinforcement was merely 10 MPa. Besides, the compressive strength of the TBR nanofiber membrane was also reinforced, which indicated that the TBR nanofiber membrane could withstand a higher operating pressure. The reduction of 4-NP to 4-AP was selected as the model reaction to evaluate the catalytic property of TBR PMIA/CA-PEI/Ag nanofiber membrane. The apparent rate constant of dynamic catalysis was 34.58 times higher than that of static catalysis. After 10 cycles, the conversion of 4-NP was still higher than 95.3%. This indicated that the TBR PMIA/CA-PEI/Ag nanofiber membrane had superior stability and recyclability. Besides, the TBR PMIA/CA-PEI/Ag nanofiber membrane also showed superior catalytic performance when it was used for catalyzing other environmental pollutants.
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Affiliation(s)
- Mingxing Chen
- State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, School of Material Science and Engineering, Tianjin Polytechnic University, No. 399 Binshui West Road, Tianjin, 300387, PR China.
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Hanske C, Sanz-Ortiz MN, Liz-Marzán LM. Silica-Coated Plasmonic Metal Nanoparticles in Action. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707003. [PMID: 29736945 DOI: 10.1002/adma.201707003] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/17/2018] [Indexed: 05/22/2023]
Abstract
Hybrid colloids consisting of noble metal cores and metal oxide shells have been under intense investigation for over two decades and have driven progress in diverse research lines including sensing, medicine, catalysis, and photovoltaics. Consequently, plasmonic core-shell particles have come to play a vital role in a plethora of applications. Here, an overview is provided of recent developments in the design and utilization of the most successful class of such hybrid materials, silica-coated plasmonic metal nanoparticles. Besides summarizing common simple approaches to silica shell growth, special emphasis is put on advanced synthesis routes that either overcome typical limitations of classical methods, such as stability issues and undefined silica porosity, or grant access to particularly sophisticated nanostructures. Hereby, a description is given, how different types of silica can be used to provide noble metal particles with specific functionalities. Finally, applications of such nanocomposites in ultrasensitive analyte detection, theranostics, catalysts, and thin-film solar cells are reviewed.
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Affiliation(s)
- Christoph Hanske
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
| | - Marta N Sanz-Ortiz
- Centre for Nanostructured Media, School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, UK
| | - Luis M Liz-Marzán
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
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