1
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Wang Z, Li R, Liu H, Liu X, Zheng F, Yu C. Reduced graphene oxide/SiC nanowire composite aerogel prepared by a hydrothermal method with excellent thermal insulation performance and electromagnetic wave absorption performance. NANOTECHNOLOGY 2024; 35:135703. [PMID: 38134441 DOI: 10.1088/1361-6528/ad183d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/22/2023] [Indexed: 12/24/2023]
Abstract
In aerospace and downhole exploration, materials must function reliably in challenging environments characterized by high temperatures and complex electromagnetic (EM) interference. Graphene oxide (GO) aerogels are promising materials for thermal insulation, and the incorporation of silicon carbide nanowires can enhance their mechanical properties, thermal stability and EM absorption efficiency. In this context, citric acid acts as both a cross-linking and reducing agent, facilitating the formation of a composite aerogel comprising GO and SiC nanowires (rGO/m-SiC NWs). Compared with GO aerogels, the representative composite aerogel sample rGS4 demonstrated significantly improved mechanical properties (yield strength increased by 0.031 MPa), outstanding thermal stability (ability to withstand temperatures up to 800 °C) and remarkably low thermal conductivity (measuring just 0.061 W m-1K-1). Importantly, the composite aerogels displayed impressive EM absorption characteristics, including a slim profile (2.5 mm), high absorption capacity (-42.23 dB) and an exceptionally broad effective absorption bandwidth (7.47 GHz). Notably, the specific effective absorption bandwidth of composite aerogels exceeded that of similar composite materials. In conclusion, rGO/m-SiC NWs exhibited exceptional mechanical properties, remarkable thermal stability, efficient thermal insulation and outstanding microwave absorption capabilities. These findings highlight their potential for use in high-temperature and electromagnetically challenging environments.
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Affiliation(s)
- Zhijian Wang
- College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Rong Li
- College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - He Liu
- CNPC Bohai Drilling Engineering Company Ltd., Tianjin 300457, People's Republic of China
| | - Xingmin Liu
- College of Material Science and Engineering, Shenyang Aerospace University, Shenyang 110136, People's Republic of China
| | - Feng Zheng
- CNPC Bohai Drilling Engineering Company Ltd., Tianjin 300457, People's Republic of China
| | - Chen Yu
- CNPC Bohai Drilling Engineering Company Ltd., Tianjin 300457, People's Republic of China
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2
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Czene S, Jegenyes N, Krafcsik O, Lenk S, Czigány Z, Bortel G, Kamarás K, Rohonczy J, Beke D, Gali A. Amino-Termination of Silicon Carbide Nanoparticles. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1953. [PMID: 37446469 DOI: 10.3390/nano13131953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 06/22/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023]
Abstract
Silicon carbide nanoparticles (SiC NPs) are promising inorganic molecular-sized fluorescent biomarkers. It is imperative to develop methods to functionalize SiC NPs for certain biological applications. One possible route is to form amino groups on the surface, which can be readily used to attach target biomolecules. Here, we report direct amino-termination of aqueous SiC NPs. We demonstrate the applicability of the amino-terminated SiC NPs by attaching bovine serum albumin as a model for functionalization. We monitor the optical properties of the SiC NPs in this process and find that the fluorescence intensity is very sensitive to surface termination. Our finding may have implications for a few nanometers sized SiC NPs containing paramagnetic color centers with optically read electron spins.
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Affiliation(s)
- Szabolcs Czene
- Doctoral School on Materials Sciences and Technologies, Óbuda University, Bécsi út 96/b, H-1034 Budapest, Hungary
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
| | - Nikoletta Jegenyes
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
| | - Olga Krafcsik
- Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem Rakpart 3, H-1111 Budapest, Hungary
| | - Sándor Lenk
- Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem Rakpart 3, H-1111 Budapest, Hungary
| | - Zsolt Czigány
- Institute of Technical Physics and Materials Science, Centre for Energy Research, P.O. Box 49, H-1525 Budapest, Hungary
| | - Gábor Bortel
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
| | - Katalin Kamarás
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
- Institute of Technical Physics and Materials Science, Centre for Energy Research, P.O. Box 49, H-1525 Budapest, Hungary
| | - János Rohonczy
- Department of Inorganic Chemistry, Institute of Chemistry, ELTE Eötvös Loránd University, Pázmány Péter sétány 1, H-1117 Budapest, Hungary
| | - David Beke
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
- Stavropoulos Center for Complex Quantum Matter, Department of Physics, University of Notre Dame, South Bend, IN 46556, USA
| | - Adam Gali
- Wigner Research Centre for Physics, Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary
- Department of Atomic Physics, Institute of Physics, Budapest University of Technology and Economics, Műegyetem Rakpart 3, H-1111 Budapest, Hungary
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3
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Smith PT, Ye Z, Pietryga J, Huang J, Wahl CB, Hedlund Orbeck JK, Mirkin CA. Molecular Thin Films Enable the Synthesis and Screening of Nanoparticle Megalibraries Containing Millions of Catalysts. J Am Chem Soc 2023. [PMID: 37311072 DOI: 10.1021/jacs.3c03910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Megalibraries are centimeter-scale chips containing millions of materials synthesized in parallel using scanning probe lithography. As such, they stand to accelerate how materials are discovered for applications spanning catalysis, optics, and more. However, a long-standing challenge is the availability of substrates compatible with megalibrary synthesis, which limits the structural and functional design space that can be explored. To address this challenge, thermally removable polystyrene films were developed as universal substrate coatings that decouple lithography-enabled nanoparticle synthesis from the underlying substrate chemistry, thus providing consistent lithography parameters on diverse substrates. Multi-spray inking of the scanning probe arrays with polymer solutions containing metal salts allows patterning of >56 million nanoreactors designed to vary in composition and size. These are subsequently converted to inorganic nanoparticles via reductive thermal annealing, which also removes the polystyrene to deposit the megalibrary. Megalibraries with mono-, bi-, and trimetallic materials were synthesized, and nanoparticle size was controlled between 5 and 35 nm by modulating the lithography speed. Importantly, the polystyrene coating can be used on conventional substrates like Si/SiOx, as well as substrates typically more difficult to pattern on, such as glassy carbon, diamond, TiO2, BN, W, or SiC. Finally, high-throughput materials discovery is performed in the context of photocatalytic degradation of organic pollutants using Au-Pd-Cu nanoparticle megalibraries on TiO2 substrates with 2,250,000 unique composition/size combinations. The megalibrary was screened within 1 h by developing fluorescent thin-film coatings on top of the megalibrary as proxies for catalytic turnover, revealing Au0.53Pd0.38Cu0.09-TiO2 as the most active photocatalyst composition.
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Affiliation(s)
- Peter T Smith
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Zihao Ye
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Jacob Pietryga
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jin Huang
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Carolin B Wahl
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jenny K Hedlund Orbeck
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
| | - Chad A Mirkin
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- International Institute for Nanotechnology, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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4
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Sotoma S, Abe H, Miyanoiri Y, Ohshima T, Harada Y. Highly Dispersed 3C Silicon Carbide Nanoparticles with a Polydopamine/Polyglycerol Shell for Versatile Functionalization. ACS APPLIED MATERIALS & INTERFACES 2023; 15:21413-21424. [PMID: 37071076 DOI: 10.1021/acsami.3c00194] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Silicon carbide (SiC) nanoparticles containing lattice defects are attracting considerable attention as next-generation imaging probes and quantum sensors for visualizing and sensing life activities. However, SiC nanoparticles are not currently used in biomedical applications because of the lack of technology for controlling their physicochemical properties. Therefore, in this study, SiC nanoparticles are deaggregated, surface-coated, functionalized, and selectively labeled to biomolecules of interest. A thermal-oxidation chemical-etching method is developed for deaggregating and producing a high yield of dispersed metal-contaminant-free SiC nanoparticles. We further demonstrated a polydopamine coating with controllable thickness that can be used as a platform for decorating gold nanoparticles on the surface, enabling photothermal application. We also demonstrated a polyglycerol coating, which gives excellent dispersity to SiC nanoparticles. Furthermore, a single-pot method is developed to produce mono/multifunctional polyglycerol-modified SiC nanoparticles. Using this method, CD44 proteins on cell surfaces are selectively labeled through biotin-mediated immunostaining. The methods developed in this study are fundamental for applying SiC nanoparticles to biomedical applications and should considerably accelerate the development of various SiC nanoparticles to exploit their potential applications in bioimaging and biosensing.
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Affiliation(s)
- Shingo Sotoma
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Hiroshi Abe
- National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Yohei Miyanoiri
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takeshi Ohshima
- National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
| | - Yoshie Harada
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
- Center for Quantum Information and Quantum Biology, Osaka University, Osaka 565-0871, Japan
- Premium Research Institute for Human Metaverse Medicine (WPI-PRIMe), Osaka University, Osaka 565-0871, Japan
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5
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Kulkarni SR, Velisoju VK, Tavares F, Dikhtiarenko A, Gascon J, Castaño P. Silicon carbide in catalysis: from inert bed filler to catalytic support and multifunctional material. CATALYSIS REVIEWS 2022. [DOI: 10.1080/01614940.2022.2025670] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shekhar R Kulkarni
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
| | - Vijay K. Velisoju
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
| | - Fernanda Tavares
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
| | - Alla Dikhtiarenko
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
| | - Pedro Castaño
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900 Saudi Arabia
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6
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Effect of octadecylamine polyoxyethylene ether on the adsorption feature of sodium polystyrene sulfonate on the SiC surface and the relevant dispersion stability of slurry. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Synthesis of water dispersible phosphate capped CoFe2O4 nanoparticles and its applications in efficient organic dye removal. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Niu Y, Zhang W, Zhai C, Liu J. Effect of poly(diallyldimethylammonium chloride) adsorption on the dispersion features of SiC particles in aqueous media. NEW J CHEM 2021. [DOI: 10.1039/d1nj00062d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The dispersion behavior of SiC suspensions was improved by PDADMAC adsorbed on the SiC surface effectively through electrostatic interaction.
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Affiliation(s)
- Yifan Niu
- Beijing Key Laboratory of Electrochemical Process and Technology for materials
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Wenxiao Zhang
- Beijing Key Laboratory of Electrochemical Process and Technology for materials
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Chaoyang Zhai
- Beijing Key Laboratory of Electrochemical Process and Technology for materials
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
| | - Jiaxiang Liu
- Beijing Key Laboratory of Electrochemical Process and Technology for materials
- Beijing University of Chemical Technology
- Beijing 100029
- People's Republic of China
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9
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Muthukumaran T, Philip J. A facile approach to synthesis of cobalt ferrite nanoparticles with a uniform ultrathin layer of silicon carbide for organic dye removal. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Zhu R, Chen Q, Du J, He Q, Liu P, Xi Y, He H. Organoclay-derived lamellar silicon carbide/carbon composite as an ideal support for Pt nanoparticles: facile synthesis and toluene oxidation performance. Chem Commun (Camb) 2020; 56:9489-9492. [PMID: 32678386 DOI: 10.1039/d0cc04187d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A lamellar SiC/C composite was synthesized from organoclay via pyrolysis followed by salt-assisted magnesiothermic reduction. The in situ-formed carbon sheet within the restricted interlayer space of clay served as the carbon source and nanotemplate for forming SiC/C. With a large specific surface area, hierarchical porosity, available anchoring sites, good hydrophobicity, and thermal stability, SiC/C proved to be a promising support for Pt. The resulting Pt loaded SiC/C exhibited an excellent toluene oxidation performance.
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Affiliation(s)
- Runliang Zhu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Qingze Chen
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Jing Du
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Qiuzhi He
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Peng Liu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - Yunfei Xi
- School of Earth, Environmental and Biological Sciences, Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia
| | - Hongping He
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
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11
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Liu C, Zhan Z, Lü F, Song M, Lu Z, Ruan H, Xie Q. CF4 plasma-fluorinated nano-SiC promotes the charge transfer in the interface of epoxy nanocomposites. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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12
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Han C, Wang B, Wu C, Shen S, Zhang X, Sun L, Tian Q, Lei Y, Wang Y. Ultrathin SiC Nanosheets with High Reduction Potential for Improved CH4
Generation from Photocatalytic Reduction of CO2. ChemistrySelect 2019. [DOI: 10.1002/slct.201900102] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Cheng Han
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Bing Wang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Chunzhi Wu
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Shujin Shen
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Xiaoshan Zhang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Lian Sun
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Qiong Tian
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
| | - Yongpeng Lei
- State Key Laboratory for Powder Metallurgy; Central South University; Changsha 410083 China
- Hunan Provincial Key Laboratory of Chemical Power Sources; College of Chemistry and Chemical Engineering; Central South University; Changsha 410083 China
| | - Yingde Wang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory; College of of Aerospace Science and Engineering; National University of Defense Technology; Changsha 410073 China
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13
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Han C, Lei Y, Wang B, Wu C, Zhang X, Shen S, Sun L, Tian Q, Feng Q, Wang Y. The functionality of surface hydroxyls on selective CH4 generation from photoreduction of CO2 over SiC nanosheets. Chem Commun (Camb) 2019; 55:1572-1575. [DOI: 10.1039/c8cc09371g] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The hydroxyls on SiC nanosheet provide local protons, stabilize the intermediates and localize the electrons for deep photoreduction of CO2.
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Affiliation(s)
- Cheng Han
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Yongpeng Lei
- State Key Laboratory for Powder Metallurgy, Central South University
- Changsha 410083
- China
- Hunan Provincial Key Laboratory of Chemical Power Sources, College of Chemistry and Chemical Engineering, Central South University
- Changsha 410083
| | - Bing Wang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Chunzhi Wu
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Xiaoshan Zhang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Shujin Shen
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Lian Sun
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Qiong Tian
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
| | - Qingguo Feng
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Materials Dynamics, Southwest Jiaotong University
- Chengdu
- China
- National Joint Engineering Laboratory of Power Grid with Electric Vehicles, Shandong University
- Jinan 250061
| | - Yingde Wang
- Science and Technology on Advanced Ceramic Fiber and Composites Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology
- Changsha 410073
- China
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14
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Han C, Lei Y, Wang B, Wang Y. In Situ-Fabricated 2D/2D Heterojunctions of Ultrathin SiC/Reduced Graphene Oxide Nanosheets for Efficient CO 2 Photoreduction with High CH 4 Selectivity. CHEMSUSCHEM 2018; 11:4237-4245. [PMID: 30300976 DOI: 10.1002/cssc.201802088] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Photoreduction of CO2 into fuel molecules such as CH4 represents a promising route to simultaneously explore renewable energy and alleviate global warming. However, the implementation of such a process is hampered by low product yields and poor selectivity. A 2D/2D heterojunction of ultrathin SiC and reduced graphene oxide (RGO) nanosheets was fabricated in situ for efficient and selective photoreduction of CO2 . Ultrathin SiC suppresses significant charge recombination in the bulk phase, thus providing more energetic electrons. The robust 2D/2D heterojunction allows fast transfer of energetic electrons from SiC to RGO. Combining the vital role of RGO in facilitating CO2 activation, the optimized SiC/RGO exhibits an electron-transfer rate of 58.17 μmol h-1 g-1 towards CO2 reduction, 2.7 times that of pure SiC (20.25 μmol h-1 g-1 ). About 92 % of the transferred electrons from SiC are devoted to generating CH4 (6.72 μmol h-1 g-1 ). Such high efficiency and selectivity are mainly a result of the densely accumulated energetic electrons within RGO, which facilitate the eight-electron process to produce CH4 . This work will inspire the design of catalyst/cocatalyst systems for efficient and selective photoreduction of CO2 .
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Affiliation(s)
- Cheng Han
- Science and Technology on Advanced Ceramic Fiber and Composites, Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China
| | - Yongpeng Lei
- State Key Laboratory for Powder Metallurgy & School of Aeronautics and Astronautics, Central South University, Changsha, 410083, P. R. China
| | - Bing Wang
- Science and Technology on Advanced Ceramic Fiber and Composites, Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China
| | - Yingde Wang
- Science and Technology on Advanced Ceramic Fiber and Composites, Laboratory, College of Aerospace Science and Engineering, National University of Defense Technology, Changsha, 410073, P. R. China
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