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Kubovics M, Silva CG, López-Periago AM, Faria JL, Domingo C. Photocatalytic Hydrogen Production using Porous 3D Graphene-Based Aerogels Supporting Pt/TiO 2 Nanoparticles. Gels 2022; 8:719. [PMID: 36354627 PMCID: PMC9689606 DOI: 10.3390/gels8110719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/27/2022] [Accepted: 11/02/2022] [Indexed: 10/28/2023] Open
Abstract
Composites involving reduced graphene oxide (rGO) aerogels supporting Pt/TiO2 nanoparticles were fabricated using a one-pot supercritical CO2 gelling and drying method, followed by mild reduction under a N2 atmosphere. Electron microscopy images and N2 adsorption/desorption isotherms indicate the formation of 3D monolithic aerogels with a meso/macroporous morphology. A comprehensive evaluation of the synthesized photocatalyst was carried out with a focus on the target application: the photocatalytic production of H2 from methanol in aqueous media. The reaction conditions (water/methanol ratio, catalyst concentration), together with the aerogel composition (Pt/TiO2/rGO ratio) and architecture (size of the aerogel pieces), were the factors that varied in optimizing the process. These experimental parameters influenced the diffusion of the reactants/products inside the aerogel, the permeability of the porous structure, and the light-harvesting properties, all determined in this study towards maximizing H2 production. Using methanol as the sacrificial agent, the measured H2 production rate for the optimized system (18,800 µmolH2h-1gNPs-1) was remarkably higher than the values found in the literature for similar Pt/TiO2/rGO catalysts and reaction media (2000-10,000 µmolH2h-1gNPs-1).
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Affiliation(s)
- Márta Kubovics
- Instituto de Ciencia de Materiales de Barcelona, CSIC, Campus UAB s/n, 8193 Bellaterra, Spain
| | - Cláudia G. Silva
- LSRE-LCM-Laboratory of Separation and Reaction Engineering–Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Ana M. López-Periago
- Instituto de Ciencia de Materiales de Barcelona, CSIC, Campus UAB s/n, 8193 Bellaterra, Spain
| | - Joaquim L. Faria
- LSRE-LCM-Laboratory of Separation and Reaction Engineering–Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
- ALiCE-Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Concepción Domingo
- Instituto de Ciencia de Materiales de Barcelona, CSIC, Campus UAB s/n, 8193 Bellaterra, Spain
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Kreft S, Schoch R, Schneidewind J, Rabeah J, Kondratenko EV, Kondratenko VA, Junge H, Bauer M, Wohlrab S, Beller M. Improving Selectivity and Activity of CO2 Reduction Photocatalysts with Oxygen. Chem 2019. [DOI: 10.1016/j.chempr.2019.04.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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3
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Freytag A, Günnemann C, Naskar S, Hamid S, Lübkemann F, Bahnemann D, Bigall NC. Tailoring Composition and Material Distribution in Multicomponent Cryoaerogels for Application in Photocatalysis. ACS APPLIED NANO MATERIALS 2018; 1:6123-6130. [PMID: 30506041 PMCID: PMC6256347 DOI: 10.1021/acsanm.8b01333] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/18/2018] [Indexed: 05/20/2023]
Abstract
In this article, we demonstrate the fabrication of tailored multicomponent cryoaerogels from colloidal nanoparticles via the cryogelation method. With this method, it is possible to control the amount of components very precisely. Furthermore, the microscopic distribution of the different nanoparticle components in the resulting monolithic structure is shown to be adjustable by simply mixing calculated amounts of colloidal nanoparticle solutions with a suitable surface charge. We focus on titania cryoaerogels due to their potential for optical applications and investigate the properties of synthesized titania-gold cryoaerogels in dependency of the composition. In addition, titania-platinum cryoaerogels were tested for photocatalytic applications such as hydrogen evolution and showed a significant increase in performance and stability compared to their respective colloidal solutions. While showing comparable results for hydrogen evolution with aerogels as reported in literature, the fabrication is much faster and less complex and therefore might enable future industrial application.
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Affiliation(s)
- Axel Freytag
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
| | - Carsten Günnemann
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
| | - Suraj Naskar
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
| | - Saher Hamid
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
- Laboratory
“Photoactive Nanocomposite Materials”, Saint-Petersburg State University, Ulyanovskaya str. 1, Peterhof, Saint-Petersburg 198504, Russia
| | - Franziska Lübkemann
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
| | - Detlef Bahnemann
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
- Laboratory
“Photoactive Nanocomposite Materials”, Saint-Petersburg State University, Ulyanovskaya str. 1, Peterhof, Saint-Petersburg 198504, Russia
| | - Nadja C. Bigall
- Institute of Physical Chemistry and Electrochemistry (PCI), Laboratory of Nano
and Quantum Engineering (LNQE), and Institute for Technical Chemistry, Leibniz Universität Hannover, D-30167 Hannover, Germany
- E-mail:
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Berestok T, Guardia P, Ibáñez M, Meyns M, Colombo M, Kovalenko MV, Peiró F, Cabot A. Electrostatic-Driven Gelation of Colloidal Nanocrystals. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9167-9174. [PMID: 30015491 DOI: 10.1021/acs.langmuir.8b01111] [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
The assembly of colloidal nanocrystals (NCs) is a unique strategy to produce porous materials with high crystallinity and unmatched control over structural and chemical parameters. This strategy has been demonstrated mostly for single-component nanomaterials. In the present work, we report the gelation of colloidal NC solutions driven by the electrostatic interaction of oppositely charged NCs. A key step for leading this strategy to success is to produce a stable colloidal solution of the positively charged component. We achieved this goal by functionalizing the NCs with inexpensive and nontoxic amino acids such as glutamine. We demonstrate the combination of positively and negatively charged NCs in proper concentrations to result in gels with a homogeneous distribution of the two compounds. In this way, porous nanocomposites with virtually any combination can be produced. We illustrate this approach by combining positively charged ceria NCs with negatively charged gold NCs to form Au-CeO2 gels. These gels were dried from supercritical CO2 to produce highly porous Au-CeO2 aerogels with specific surface areas of 120 m2 g-1. The formation of a proper interface is confirmed through the evaluation of nanocomposite catalytic activity toward CO oxidation. We further demonstrate the versatility of this strategy to produce porous metal chalcogenide-metal oxide and metal-metal chalcogenide nanocomposites by the examples of PbS-CeO2 and Au-PbS.
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Affiliation(s)
- Taisiia Berestok
- Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs 08930 , Barcelona , Spain
- LENS-MIND, Departament d'Enginyeria Electrònica I Biomèdica , Universitat de Barcelona , 08028 Barcelona , Spain
| | - Pablo Guardia
- Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs 08930 , Barcelona , Spain
| | - Maria Ibáñez
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Zürich , CH-8093 , Switzerland
| | - Michaela Meyns
- Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs 08930 , Barcelona , Spain
| | - Massimo Colombo
- Nanochemistry Department , Istituto Italiano di Tecnologia , via Morego 30 , 16130 Genova , Italy
| | - Maksym V Kovalenko
- Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences , ETH Zürich , Zürich , CH-8093 , Switzerland
- EMPA-Swiss Federal Laboratories for Materials Science and Technology , Dübendorf , CH-8600 , Switzerland
| | - Francesca Peiró
- LENS-MIND, Departament d'Enginyeria Electrònica I Biomèdica , Universitat de Barcelona , 08028 Barcelona , Spain
- Institute of Nanoscience and Nanotechnology (In2UB) , Universitat de Barcelona , 08028 Barcelona , Spain
| | - Andreu Cabot
- Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs 08930 , Barcelona , Spain
- ICREA , Pg. Lluís Companys 23 , 08010 Barcelona , Spain
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5
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Ziegler C, Wolf A, Liu W, Herrmann AK, Gaponik N, Eychmüller A. Moderne Anorganische Aerogele. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611552] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christoph Ziegler
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 639798 Singapur
| | - André Wolf
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Wei Liu
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Anne-Kristin Herrmann
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Nikolai Gaponik
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Alexander Eychmüller
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
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6
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Ziegler C, Wolf A, Liu W, Herrmann AK, Gaponik N, Eychmüller A. Modern Inorganic Aerogels. Angew Chem Int Ed Engl 2017; 56:13200-13221. [DOI: 10.1002/anie.201611552] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Ziegler
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
- Present address: LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 639798 Singapore
| | - André Wolf
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Wei Liu
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Anne-Kristin Herrmann
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Nikolai Gaponik
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Alexander Eychmüller
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
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7
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Yan H, Li X, Qin L, Kang SZ. Preparation of 4,4-bipyridine covalently-linked graphene monolith and its photocatalytic behavior in light-driven H2 evolution from water. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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8
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Wen D, Eychmüller A. 3D assembly of preformed colloidal nanoparticles into gels and aerogels: function-led design. Chem Commun (Camb) 2017; 53:12608-12621. [DOI: 10.1039/c7cc03862c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nanoparticle-based aerogels combine the properties of traditional aerogels with those of nanoparticles, and hold promise for various applications following a function-led design.
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Affiliation(s)
- Dan Wen
- Center for Nano Energy Materials
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi’an 710072
- China
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9
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Rechberger F, Niederberger M. Synthesis of aerogels: from molecular routes to 3-dimensional nanoparticle assembly. NANOSCALE HORIZONS 2017; 2:6-30. [PMID: 32260673 DOI: 10.1039/c6nh00077k] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Colloidal nanocrystals are extensively used as building blocks in nanoscience, and amazing results have been achieved in assembling them into ordered, close-packed structures. But in spite of great efforts, the size of these structures is typically restricted to a few micrometers, and it is very hard to extend them into the macroscopic world. In comparison, aerogels are macroscopic materials, highly porous, disordered, ultralight and with immense surface areas. With these distinctive characteristics, they are entirely contrary to common nanoparticle assemblies such as superlattices or nanocrystal solids, and therefore cover a different range of applications. While aerogels are traditionally synthesized by molecular routes based on aqueous sol-gel chemistry, in the last few years the gelation of nanoparticle dispersions became a viable alternative to improve the crystallinity and to widen the structural, morphological and compositional complexity of aerogels. In this Review, the different approaches to inorganic non-siliceous and non-carbon aerogels are addressed. We start our discussion with wet chemical routes involving molecular precursors, followed by processing methods using nanoparticles as building blocks. A unique feature of many of these routes is the fact that a macroscopic, often monolithic body is produced by pure self-assembly of nanosized colloids without the need for any templates.
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Affiliation(s)
- Felix Rechberger
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, CH-8093 Zurich, Switzerland.
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10
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Liu QQ, Fan CY, Tang H, Ma TD, Shen JY. One-step synthesis of recycled 3D CeVO4/rGO composite aerogels for efficient degradation of organic dyes. RSC Adv 2016. [DOI: 10.1039/c6ra18013b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Three dimensional (3D) CeVO4/rGO porous aerogels were fabricated by a one-pot hydrothermal method.
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Affiliation(s)
- Q. Q. Liu
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- PR China
| | - C. Y. Fan
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- PR China
| | - H. Tang
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- PR China
| | - T. D. Ma
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- PR China
| | - J. Y. Shen
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- PR China
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