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Yang Z, Li Y, Wang X, Li J, Wang J, Zhang G. Facet-dependent activation of oxalic acid over hematite nanocrystals under the irradiation of visible light for efficient degradation of pollutants. J Environ Sci (China) 2024; 142:204-214. [PMID: 38527885 DOI: 10.1016/j.jes.2023.07.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/08/2023] [Accepted: 07/09/2023] [Indexed: 03/27/2024]
Abstract
Naturally occurring hematite has been widely studied in the Fenton-like system for water pollutant remediation due to its abundance and non-toxicity. However, its inadequate catalytic activity results in difficulty in effectively degrading pollutants in the catalytic degradation system that it constitutes. Thus, we constructed a photochemical system composed of hematite with {001} facet of high activity facet and low-cost and non-toxic oxalic acid (OA) for the removal of various types of pollutants. The removal rate for the degradation of metronidazole, tetracycline hydrochloride, Rhodamine B, and hexavalent chromium by hematite nanoplate with the exposed {001} facet activating OA under visible light irradiation was 4.75, 2.25, 2.33, and 2.74 times than that by the exposed {110} facet, respectively. Density functional theory (DFT) calculation proved that the OA molecule was more easily adsorbed on the {001} facet of hematite than that on the {110} facet, which would favor the formation of the more Fe(III)-OA complex and reactive species. In addition, the reactive site of metronidazole for the attraction of radicals was identified on the basis of the DFT calculation on the molecular occupied orbitals, and the possible degradation pathway for metronidazole included carbon chain fracture, hydroxyethyl-cleavage, denitrogenation, and hydroxylation. Thus, this finding may offer a valuable direction in designing an efficient iron-based catalyst based on facet engineering for the improved activity of Fenton-like systems such as OA activation.
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Affiliation(s)
- Zhixiong Yang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Yuan Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Xiaotian Wang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Jiaming Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
| | - Jiquan Wang
- Hubei Engineering Consulting Co., Ltd., Wuhan 430071, China
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China.
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2
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Leone L, Sgueglia G, La Gatta S, Chino M, Nastri F, Lombardi A. Enzymatic and Bioinspired Systems for Hydrogen Production. Int J Mol Sci 2023; 24:ijms24108605. [PMID: 37239950 DOI: 10.3390/ijms24108605] [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: 03/25/2023] [Revised: 04/30/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
The extraordinary potential of hydrogen as a clean and sustainable fuel has sparked the interest of the scientific community to find environmentally friendly methods for its production. Biological catalysts are the most attractive solution, as they usually operate under mild conditions and do not produce carbon-containing byproducts. Hydrogenases promote reversible proton reduction to hydrogen in a variety of anoxic bacteria and algae, displaying unparallel catalytic performances. Attempts to use these sophisticated enzymes in scalable hydrogen production have been hampered by limitations associated with their production and stability. Inspired by nature, significant efforts have been made in the development of artificial systems able to promote the hydrogen evolution reaction, via either electrochemical or light-driven catalysis. Starting from small-molecule coordination compounds, peptide- and protein-based architectures have been constructed around the catalytic center with the aim of reproducing hydrogenase function into robust, efficient, and cost-effective catalysts. In this review, we first provide an overview of the structural and functional properties of hydrogenases, along with their integration in devices for hydrogen and energy production. Then, we describe the most recent advances in the development of homogeneous hydrogen evolution catalysts envisioned to mimic hydrogenases.
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Affiliation(s)
- Linda Leone
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Gianmattia Sgueglia
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Salvatore La Gatta
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Marco Chino
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Flavia Nastri
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
| | - Angela Lombardi
- Department of Chemical Sciences, University of Naples Federico II, 80126 Naples, Italy
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3
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Sayın FE, Karatas O, Özbay İ, Gengec E, Khataee A. Treatment of real printing and packaging wastewater by combination of coagulation with Fenton and photo-Fenton processes. CHEMOSPHERE 2022; 306:135539. [PMID: 35779686 DOI: 10.1016/j.chemosphere.2022.135539] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/14/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Printing and packaging process wastewater (PPPW) with high flow rates causes severe damage to the environment due to high organic pollution (3830.0 mg O2/L of COD and 813.6 mg/L of TOC) and turbidity (9110 NTU). This study examined the efficiencies of coagulation, Fenton, and photo-Fenton procedures, and their combinations in the treatment of PPPW. The three inorganic salts (FeCl3, Al2(SO4)3, and Fe2(SO4)3) were used in a wide range of pH (2.5-10) as a coagulant, and FeCl3 was chosen as the optimum coagulant. The 71.3% of TOC removal and the decreasing of turbidity up to 5.8 NTU were obtained at 0.5 g/L FeCl3 and pH of 6.0. Then, Fenton and photo-Fenton processes were applied to the effluent of the coagulation process. The Fenton process engaged the TOC removal efficiencies up to 85.2% in the presence of 7.350 g/L iron catalysts and 36.0 mL/L H2O2. The combined coagulation and Fenton process is a promising way to decrease the COD up to 119 mg O2/L, meeting the wastewater discharge standards of COD (200 mg O2/L) in Turkey. However, adding UV sources to the Fenton process showed a little bit of engagement (only %1.4 extra removal). When evaluated for PPPW, it is seen that the usage of combined coagulation and the Fenton process is an important treatment alternative. Furthermore, Zeta potential measurements and size exclusion chromatography were used to understand the removal mechanism.
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Affiliation(s)
- Fatma Ece Sayın
- Department of Environmental Engineering, Kocaeli University, Izmit 41380, Kocaeli, Turkey
| | - Okan Karatas
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Department of Environmental Engineering, Bursa Technical University, 16310, Bursa, Turkey
| | - İsmail Özbay
- Department of Environmental Engineering, Kocaeli University, Izmit 41380, Kocaeli, Turkey
| | - Erhan Gengec
- Department of Environmental Protection Technology, Kocaeli University, 41275, Kocaeli, Turkey
| | - Alireza Khataee
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666- 16471, Tabriz, Iran.
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4
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Lin H, Xiao Y, Geng A, Bi H, Xu X, Xu X, Zhu J. Research Progress on Graphitic Carbon Nitride/Metal Oxide Composites: Synthesis and Photocatalytic Applications. Int J Mol Sci 2022; 23:12979. [PMID: 36361768 PMCID: PMC9658189 DOI: 10.3390/ijms232112979] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/28/2022] [Accepted: 10/11/2022] [Indexed: 12/31/2023] Open
Abstract
Although graphitic carbon nitride (g-C3N4) has been reported for several decades, it is still an active material at the present time owing to its amazing properties exhibited in many applications, including photocatalysis. With the rapid development of characterization techniques, in-depth exploration has been conducted to reveal and utilize the natural properties of g-C3N4 through modifications. Among these, the assembly of g-C3N4 with metal oxides is an effective strategy which can not only improve electron-hole separation efficiency by forming a polymer-inorganic heterojunction, but also compensate for the redox capabilities of g-C3N4 owing to the varied oxidation states of metal ions, enhancing its photocatalytic performance. Herein, we summarized the research progress on the synthesis of g-C3N4 and its coupling with single- or multiple-metal oxides, and its photocatalytic applications in energy production and environmental protection, including the splitting of water to hydrogen, the reduction of CO2 to valuable fuels, the degradation of organic pollutants and the disinfection of bacteria. At the end, challenges and prospects in the synthesis and photocatalytic application of g-C3N4-based composites are proposed and an outlook is given.
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Affiliation(s)
| | | | | | | | | | | | - Junjiang Zhu
- Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China
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5
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Chen J, Hong X, Wang Y, Guan X, Wang R, Wang Y, Du H, Zhang Y, Shen S. Instability Issues and Stabilization Strategies of Lead Halide Perovskites for Photo(electro)catalytic Solar Fuel Production. J Phys Chem Lett 2022; 13:1806-1824. [PMID: 35171612 DOI: 10.1021/acs.jpclett.1c04017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photo(electro)catalysis is a promising route to utilizing solar energy to produce valuable chemical fuels. In recent years, lead halide perovskites (LHPs) as a class of high-performance semiconductor materials have been extensively used in photo(electro)catalytic solar fuel production because of their excellent photophysical properties. However, instability issues make it arduous for LHPs to achieve their full potential in photo(electro)catalysis. This Perspective discusses the instability issues and summarizes the stabilization strategies employed for prolonging the stability or durability of LHPs in photo(electro)catalytic solar fuel production. The strategies for particulate photocatalytic systems (including composition engineering, surface passivation, core-shell structures construction, and solvent selection) and for thin-film PEC systems (including physical protective coating, A site cation additive, and surface/interface passivation) are introduced. Finally, some challenges and opportunities regarding the development of stable and efficient LHPs for photo(electro)catalysis are proposed.
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Affiliation(s)
- Jie Chen
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xin Hong
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yiqing Wang
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Xiangjiu Guan
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Ruizhe Wang
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yiduo Wang
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hanrui Du
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yihao Zhang
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Shaohua Shen
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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6
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Humayun M, Ullah H, Tahir AA, Bin Mohd Yusoff AR, Mat Teridi MA, Nazeeruddin MK, Luo W. An Overview of the Recent Progress in Polymeric Carbon Nitride Based Photocatalysis. CHEM REC 2021; 21:1811-1844. [PMID: 33887089 DOI: 10.1002/tcr.202100067] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 01/07/2023]
Abstract
Recently, polymeric carbon nitride (g-C3 N4 ) as a proficient photo-catalyst has been effectively employed in photocatalysis for energy conversion, storage, and pollutants degradation due to its low cost, robustness, and environmentally friendly nature. The critical review summarized the recent development, fundamentals, nanostructures design, advantages, and challenges of g-C3 N4 (CN), as potential future photoactive material. The review also discusses the latest information on the improvement of CN-based heterojunctions including Type-II, Z-scheme, metal/CN Schottky junctions, noble metal@CN, graphene@CN, carbon nanotubes (CNTs)@CN, metal-organic frameworks (MOFs)/CN, layered double hydroxides (LDH)/CN heterojunctions and CN-based heterostructures for H2 production from H2 O, CO2 conversion and pollutants degradation in detail. The optical absorption, electronic behavior, charge separation and transfer, and bandgap alignment of CN-based heterojunctions are discussed elaborately. The correlations between CN-based heterostructures and photocatalytic activities are described excessively. Besides, the prospects of CN-based heterostructures for energy production, storage, and pollutants degradation are discussed.
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Affiliation(s)
- Muhammad Humayun
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, PR, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR, China
| | - Habib Ullah
- Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, Cornwall, United Kingdom
| | - Asif Ali Tahir
- Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, Cornwall, United Kingdom
| | - Abd Rashid Bin Mohd Yusoff
- Department of Physics, Swansea University, Vivian Tower, Singleton Park, SA2 8PP, Swansea, United Kingdom
| | - Mohd Asri Mat Teridi
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l'Industrie 17, CH-1951, Sion, Switzerland
| | - Wei Luo
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, PR, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR, China
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7
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Zong M, Song D, Zhang X, Huang X, Lu X, Rosso KM. Facet-Dependent Photodegradation of Methylene Blue by Hematite Nanoplates in Visible Light. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:677-688. [PMID: 33351596 DOI: 10.1021/acs.est.0c05592] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The expression of specific crystal facets in different nanostructures is known to play a vital role in determining the sensitivity toward the photodegradation of organics, which can generally be ascribed to differences in surface structure and energy. Herein, we report the synthesis of hematite nanoplates with controlled relative exposure of basal (001) and edge (012) facets, enabling us to establish direct correlation between the surface structure and the photocatalytic degradation efficiency of methylene blue (MB) in the presence of hydrogen peroxide. MB adsorption experiments showed that the capacity on (001) is about three times larger than on (012). Density functional theory calculations suggest the adsorption energy on the (001) surface is 6.28 kcal/mol lower than that on the (012) surface. However, the MB photodegradation rate on the (001) surface is around 14.5 times faster than on the (012) surface. We attribute this to a higher availability of the photoelectron accepting surface Fe3+ sites on the (001) facet. This facilitates more efficient iron valence cycling and the heterogeneous photo-Fenton reaction yielding MB-oxidizing hydroxyl radicals at the surface. Our findings help establish a rational basis for the design and optimization of hematite nanostructures as photocatalysts for environmental remediation.
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Affiliation(s)
- Meirong Zong
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
- Physical & Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Duo Song
- Physical & Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xin Zhang
- Physical & Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xiaopeng Huang
- Physical & Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Xiancai Lu
- School of Earth Sciences and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Kevin M Rosso
- Physical & Computational Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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8
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Qin L, Gao M, Zhang M, Li X, Ru R, Luo H, Zhang G. Bioinspired Assembly of Double Honeycomb-Like Hierarchical Capsule Confined Encapsulation with Functional Micro/Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004692. [PMID: 33201585 DOI: 10.1002/smll.202004692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Inspired by "micro/nanoreactor" effect of cellular organelle on specific biochemical reactions, a double honeycomb-like hierarchical capsule confined encapsulation with functional micro/nanocrystals is designed. The bioinspired hierarchical capsules derived from polymeric composite microspheres are successfully fabricated through a combination of selective chemical etching and pyrolysis. In situ introduction of functional guests (including organometallic molecules, tetraethoxysilane, or metal-organic frameworks (MOFs)) into internal cellular structure of microspheres is first put forward by phase inversion method. The development of selective etching creates honeycomb-like structure on the outside surface of capsule and allows sulfur to homogeneously distribute into matrix. With the novel approach, the hierarchical channels (micro-meso-macropore) of composite capsule enhance transportation of reactants and dispersion of active sites, and thus exhibit superior photocatalytic oxidation and electromagnetic absorbing. The promising strategy will be applied more generally to encapsulate different species into hierarchical capsule with tailored properties and functionalities.
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Affiliation(s)
- Lei Qin
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
| | - Mingzhen Gao
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
| | - Mengyuan Zhang
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
| | - Xiong Li
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
| | - Rui Ru
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
| | - Huili Luo
- College of Resources and Environment, Hunan Agricultural University, Nongda Road 1#, Changsha, 410128, P. R. China
| | - Guoliang Zhang
- Center for Membrane and Water Science & Technology, State Key Lab Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road 18#, Hangzhou, 310014, P. R. China
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9
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Ko MJ, Park BC, Koo TM, Jeon YS, Kim MS, Kim YK. Multi-Component Mesocrystalline Nanoparticles with Enhanced Photocatalytic Activity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004696. [PMID: 33215854 DOI: 10.1002/smll.202004696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/07/2020] [Indexed: 06/11/2023]
Abstract
Mesocrystals, consisting of small subunits, have gained research interests owing to their ability to simultaneously modify material-specific properties and interactions among subunits. However, despite these unique characteristics, most mesocrystals are composed of a single material, and there is a disjunction between academic discovery and practical application. In this study, the synthesis of multi-component mesocrystalline nanoparticles composed of Fe3 O4 , ZnFe2 O4 , and ZnO subunits using a polymerization induced heterogeneous nucleation method is reported. The structure has small ZnFe2 O4 and ZnO nanocrystals covering the Fe3 O4 crystallites. It exhibits not only magnetic and catalytic properties determined by the size of each subunit nanocrystal, but also enhances photocatalytic and colloidal properties that originates because of its crowded arrangement. The magnetically recoverable catalysts exhibit remarkable photodegradation of organic molecules under the irradiation of visible light for 1 h; thus, improving its applicability in purifying a large amount of wastewater during the daytime.
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Affiliation(s)
- Min Jun Ko
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Bum Chul Park
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- BK21 Plus Center for Creative Materials and Components, Korea University, Seoul, 02841, Republic of Korea
| | - Thomas Myeongseok Koo
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yoo Sang Jeon
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- Research Institute of Engineering and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Myeong Soo Kim
- Institute of High Technology Materials and Devices, Korea University, Seoul, 02841, Republic of Korea
| | - Young Keun Kim
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
- BK21 Plus Center for Creative Materials and Components, Korea University, Seoul, 02841, Republic of Korea
- Research Institute of Engineering and Technology, Korea University, Seoul, 02841, Republic of Korea
- Institute of High Technology Materials and Devices, Korea University, Seoul, 02841, Republic of Korea
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10
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Salimi K. Self-assembled bio-inspired Au/CeO2 nano-composites for visible white LED light irradiated photocatalysis. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124908] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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12
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Arora K, Karthikeyan S, Shiekh BA, Kaur M, Singh H, Bhadu GR, Kang TS. In situ preparation of a nanocomposite comprising graphene and α-Fe2O3 nanospindles for the photo-degradation of antibiotics under visible light. NEW J CHEM 2020. [DOI: 10.1039/d0nj03190a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Preparation of α-Fe2O3 nanospindle (NS) decorated graphene sheets for antibiotic degradation.
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Affiliation(s)
- Komal Arora
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Sekar Karthikeyan
- Department of Earth Resources Engineering
- Faculty of Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Bilal Ahmad Shiekh
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Manvir Kaur
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Harjinder Singh
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Gopala Ram Bhadu
- Analytical and Environmental Science Division and Centralized Instrument Facility
- CSIR-Central Salt and Marine Chemicals Research Institute
- Bhavnagar-364002
- India
| | - Tejwant Singh Kang
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
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13
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Huang X, Chen Y, Walter E, Zong M, Wang Y, Zhang X, Qafoku O, Wang Z, Rosso KM. Facet-Specific Photocatalytic Degradation of Organics by Heterogeneous Fenton Chemistry on Hematite Nanoparticles. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:10197-10207. [PMID: 31397154 DOI: 10.1021/acs.est.9b02946] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hematite nanoparticles are abundant in the photic zone of aquatic environments, where they play a prominent role in photocatalytic transformations of bound organics. Here, we examine the photocatalytic degradation of rhodamine B by visible light using two different structurally well-defined hematite nanoparticle morphologies. In addition to detailed solid characterization and aqueous kinetics measurements, we also exploit species-selective scavengers in electron paramagnetic resonance spectroscopy to sequester specific reaction channels and thereby assess their impact. The photodegradation rates for nanoplates dominated by {001} facets and nanocubes dominated by {012} facets were 0.13 and 0.7 h-1, respectively, and the turnover frequencies for the active sites on {001} and {012} were 7.89 × 10-3 and 3.07× 10-3 s-1, yielding apparent activation energies of 17.13 and 24.94 kcal/mol within the energetic span model, respectively. Facet-specific differences appear to be directly not linked with the simple aerial cation site density but instead with their extent of undercoordination. By establishing this linkage, the findings lay a foundation for predicting the photocatalytic degradation efficiency for the myriad of possible hematite nanoparticle morphologies and more broadly help unveil key reactions at the interface that may govern photocatalytic organic transformations in natural and engineered aquatic environments.
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Affiliation(s)
- Xiaopeng Huang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Ying Chen
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Eric Walter
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Meirong Zong
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Yang Wang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Xin Zhang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Odeta Qafoku
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Zheming Wang
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
| | - Kevin M Rosso
- Physical and Computational Sciences Directorate , Pacific Northwest National Laboratory , P.O. Box 999, Richland , Washington 99352 , United States
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14
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Li Y, Kong T, Shen S. Artificial Photosynthesis with Polymeric Carbon Nitride: When Meeting Metal Nanoparticles, Single Atoms, and Molecular Complexes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900772. [PMID: 30977981 DOI: 10.1002/smll.201900772] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 03/17/2019] [Indexed: 05/28/2023]
Abstract
Artificial photosynthesis for solar water splitting and CO2 reduction to produce hydrogen and hydrocarbon fuels has been considered as one of the most promising ways to solve increasingly serious energy and environmental problems. As a well-documented metal-free semiconductor, polymeric carbon nitride (PCN) has been widely used and intensively investigated for photocatalytic water splitting and CO2 reduction, owing to its physicochemical stability, visible-light response, and facile synthesis. However, PCN as a photocatalyst still suffers from the fast recombination of electron-hole pairs and poor water redox reaction kinetics, greatly restricting its activity for artificial photosynthesis. Among the various modification approaches developed so far, decorating PCN with metals in different existences of nanoparticles, single atoms and molecular complexes, has been evidently very effective to overcome these limitations to improve photocatalytic performances. In this Review article, a systematic introduction to the state-of-the-art metal/PCN photocatalyst systems is given, with metals in versatility of nanoparticles, single atoms, and molecular complexes. Then, the recent processes of the metal/PCN photocatalyst systems in the applications of artificial photosynthesis, e.g., water splitting and CO2 reduction, are reviewed. Finally, the remaining challenges and opportunities for the development of high efficiency metal/PCN photocatalyst systems are presented and prospected.
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Affiliation(s)
- Yanrui Li
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Tingting Kong
- College of Chemistry and Chemical Engineering, Xi'an Shiyou University, Xi'an, 710054, China
| | - Shaohua Shen
- International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
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15
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Cui Y, Sun H, Briscoe J, Wilson R, Tarakina N, Dunn S, Pu Y. Influence of ferroelectric dipole on the photocatalytic activity of heterostructured BaTiO 3/a-Fe 2O 3. NANOTECHNOLOGY 2019; 30:255702. [PMID: 30812015 DOI: 10.1088/1361-6528/ab0b00] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Using BaTiO3 as a model ferroelectric material we investigated the influence of the ferroelectric dipole on the photocatalytic activity of a heterogeneous BaTiO3/α-Fe2O3 photocatalyst. Two distinct BaTiO3 samples were used: BTO and BTO-A. The latter consists more ferroelectric tetragonal phase and thus stronger ferroelectricity. It was found that under identical experimental conditions, the photodecolourisation rate of a target dye using BTO-A/α-Fe2O3 under visible light was 1.3 times that of BTO/α-Fe2O3. Photoelectrochemical and photoluminescence analysis confirmed a more effective charge carrier separation in BTO-A/α-Fe2O3. Considering solely the photoexcitation of α-Fe2O3 in the composite photocatalysts under visible light and the similar microstructures of the two catalysts, we propose that the enhanced decolourisation rate when using BTO-A/α-Fe2O3 is due to the improved charge carrier separation and extended charge carrier lifetime arising from an interaction between the ferroelectric dipole and the carriers in α-Fe2O3. Our results demonstrate a new process to use a ferroelectric dipole to manipulate the charge carrier transport, overcome recombination, and extend the charge carrier lifetime of the surface material in a heterogeneous catalyst system.
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Affiliation(s)
- Yongfei Cui
- School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, People's Republic of China. Materials Research Institute and School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
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16
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Zhu SC, Liu J, Hu Q, Mao WL, Meng Y, Zhang D, Mao HK, Zhu Q. Structure-Controlled Oxygen Concentration in Fe 2O 3 and FeO 2. Inorg Chem 2019; 58:5476-5482. [PMID: 30556389 DOI: 10.1021/acs.inorgchem.8b02764] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Solid-solid reaction, particularly in the Fe-O binary system, has been extensively studied in the past decades because of its various applications in chemistry and materials and earth sciences. The recently synthesized pyrite-FeO2 at high pressure suggested a novel oxygen-rich stoichiometry that extends the achievable O-Fe ratio in iron oxides by 33%. Although FeO2 was synthesized from Fe2O3 and O2, the underlying solid reaction mechanism remains unclear. Herein, combining in situ X-ray diffraction experiments and first-principles calculations, we identified that two competing phase transitions starting from Fe2O3: (1) without O2, perovskite-Fe2O3 transits to the post-perovskite structure above 50 GPa; (2) if free oxygen is present, O diffuses into the perovskite-type lattice of Fe2O3 leading to the pyrite-type FeO2 phase. We found the O-O bonds in FeO2 are formed by the insertion of oxygen into the Pv lattice via the external stress and such O-O bonding is only kinetically stable under high pressure. This may provide a general mechanism of adding extra oxygen to previous known O saturated oxides to produce unconventional stoichiometries. Our results also shed light on how O is enriched in mantle minerals under pressure.
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Affiliation(s)
- Sheng-Cai Zhu
- Department of Physics and Astronomy, High Pressure Science and Engineering Center , University of Nevada , Las Vegas , Nevada 89154 , United States.,Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , P. R. China
| | - Jin Liu
- Department of Geological Sciences , Stanford University , Stanford , California 94305 , United States
| | - Qingyang Hu
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , P. R. China
| | - Wendy L Mao
- Department of Geological Sciences , Stanford University , Stanford , California 94305 , United States
| | - Yue Meng
- High Pressure Collaborative Access Team, X-ray Science Division , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Dongzhou Zhang
- Hawai'i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology , University of Hawai'i at Manoa , Honolulu , Hawaii 96822 , United States
| | - Ho-Kwang Mao
- Center for High Pressure Science and Technology Advanced Research (HPSTAR) , Shanghai 201203 , P. R. China.,Geophysical Laboratory , Carnegie Institution of Washington , Washington, D.C. 20015 , United States
| | - Qiang Zhu
- Department of Physics and Astronomy, High Pressure Science and Engineering Center , University of Nevada , Las Vegas , Nevada 89154 , United States
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17
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Yin H, Zhao Y, Hua Q, Zhang J, Zhang Y, Xu X, Long Y, Tang J, Wang F. Controlled Synthesis of Hollow α-Fe 2O 3 Microspheres Assembled With Ionic Liquid for Enhanced Visible-Light Photocatalytic Activity. Front Chem 2019; 7:58. [PMID: 30873398 PMCID: PMC6402386 DOI: 10.3389/fchem.2019.00058] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/21/2019] [Indexed: 11/26/2022] Open
Abstract
Porous self-assembled α-Fe2O3 hollow microspheres were fabricated via an ionic liquid-assisted solvothermal reaction and sequential calcinations. The concentration of the ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate [C4Mim]BF4) was found to play a crucial role in the control of these α-Fe2O3 hollow structures. Trace amounts ionic liquid was used as the soft template to synthesize α-Fe2O3 hollow spheres with a large specific surface (up to 220 m2/g). Based on time-dependent experiments, the proposed formation mechanisms were presented. Under UV light irradiation, the as-synthesized α-Fe2O3 hollow spheres exhibited excellent photocatalysis in Rhodamine B (RhB) photodegradation and the rate constant was 2–3 times higher than α-Fe2O3 particles. The magnetic properties of α-Fe2O3 hollow structures were found to be closely associated with the shape anisotropy.
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Affiliation(s)
- Hang Yin
- College of Physics and State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao, China
| | - YuLing Zhao
- College of Physics and State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao, China
| | - Qingsong Hua
- National Engineering Research Center for Intelligent Electrical Vehicle Power System, Power & Energy Storage System Research Center, Qingdao University, Qingdao, China
| | - Jianmin Zhang
- National Engineering Research Center for Intelligent Electrical Vehicle Power System, Power & Energy Storage System Research Center, Qingdao University, Qingdao, China
| | - Yuansai Zhang
- College of Physics and State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao, China
| | - Xijin Xu
- School of Physics and Technology, University of Jinan, Jinan, China
| | - Yunze Long
- College of Physics and State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao, China
| | - Jie Tang
- 1D Nanomaterials Group, National Institute for Materials Science, Tsukuba, Japan
| | - Fengyun Wang
- College of Physics and State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao, China.,Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China
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18
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Deng Y, Liao Q, Zou X, Luo J, Tang J. Hematite mesocrystals templated by hydrolyzed and aminolyzed glycidyl methacrylate, and their application in photocatalytic Fenton reaction. CrystEngComm 2019. [DOI: 10.1039/c8ce01631c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Aminolyzed and hydrolyzed glycidyl methacrylate were applied for hydrothermal preparation of bipyramids and plate-like hematite mesocrystals with (116) and (001) exposed faces, respectively.
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Affiliation(s)
- Yuanming Deng
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
| | - Qianlong Liao
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
| | - Xi Zou
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
| | - Junxuan Luo
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
| | - Jiaoning Tang
- Shenzhen Key Laboratory of Polymer Science and Technology
- Guangdong Research Center for Interfacial Engineering of Functional Materials
- College of Materials Science and Engineering
- Shenzhen University
- Shenzhen 518060
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19
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Komal K, Kaur H, Kainth M, Meena SS, Kang TS. Sustainable preparation of sunlight active α-Fe2O3 nanoparticles using iron containing ionic liquids for photocatalytic applications. RSC Adv 2019; 9:41803-41810. [PMID: 35541580 PMCID: PMC9076515 DOI: 10.1039/c9ra09678g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 12/09/2019] [Indexed: 11/30/2022] Open
Abstract
Inspired by the nano-segregation of ionic liquids (ILs) into bi-continuous structures constituting of arrays of ionic and non-ionic components, herein, a new and sustainable strategy for preparation of mesh-like nano-sheet α-Fe2O3 nanoparticles and their photo-catalytic activity under sunlight, is presented. For the purpose, metal (iron) containing ionic liquids (MILs), 1-alkyl-3-methylimidazolium tetrachloroferrates, [Cnmim][FeCl4], (n = 4, 8 and 16), which not only act as precursors and solvents but also as structure directing agents have been used. Thus prepared NPs show MIL dependent structural, photophysical and magnetic properties. The catalytic efficiency of NPs has been tested for the photo-degradation of organic dyes (Rhodamine B) in aqueous solution under sunlight. The NPs are found to exhibit comparable catalytic efficiency under sunlight as compared to that observed under high intensity visible lamplight, without showing a decline in their catalytic efficiency even after 4 catalytic cycles. It is anticipated that the present work will provide a new platform for preparation of sunlight active nanomaterials for photo-catalytic applications with control over the structural and physical properties via varying the molecular structure of MILs. Inspired by nanosegregation of ionic liquids into bicontinuous structures of arrays of ionic and non-ionic components, we present a new sustainable strategy for preparation of mesh-like nano-sheets of α-Fe2O3 nanoparticles and their photocatalytic activity under sunlight.![]()
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Affiliation(s)
- Komal Komal
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Harmandeep Kaur
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Money Kainth
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Sher Singh Meena
- Solid State Physics Division
- Bhabha Atomic Research Centre
- Mumbai 400 085
- India
| | - Tejwant Singh Kang
- Department of Chemistry
- University Grants Commission (UGC) Centre for Advanced Studies-II
- Guru Nanak Dev University
- Amritsar-143005
- India
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20
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Liu Y, Song Y, You Y, Fu X, Wen J, Zheng X. NiFe 2 O 4 /g-C 3 N 4 heterojunction composite with enhanced visible-light photocatalytic activity. JOURNAL OF SAUDI CHEMICAL SOCIETY 2018. [DOI: 10.1016/j.jscs.2017.08.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Iqbal W, Yang B, Zhao X, Rauf M, Waqas M, Gong Y, Zhang J, Mao Y. Controllable synthesis of graphitic carbon nitride nanomaterials for solar energy conversion and environmental remediation: the road travelled and the way forward. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01061g] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review discusses advances in the synthesis and design of g-C3N4-based nanomaterials and their various photocatalytic and photoredox applications.
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Affiliation(s)
- Waheed Iqbal
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Bo Yang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology
- Research Centre for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Muhammad Rauf
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Muhammad Waqas
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Yan Gong
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yanping Mao
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
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22
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Preparation of mesoporous magnetic Fe2O3 nanoparticle and its application for organic dyes removal. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.10.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Kim CW, Kang MJ, Van TK, Kang YS. A selective morphosynthetic approach for single crystalline hematite through morphology evolution via microwave assisted hydrothermal synthesis. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.05.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Mao Z, Chen J, Yang Y, Wang D, Bie L, Fahlman BD. Novel g-C 3N 4/CoO Nanocomposites with Significantly Enhanced Visible-Light Photocatalytic Activity for H 2 Evolution. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12427-12435. [PMID: 28328193 DOI: 10.1021/acsami.7b00370] [Citation(s) in RCA: 115] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Novel g-C3N4/CoO nanocomposite application for photocatalytic H2 evolution were designed and fabricated for the first time in this work. The structure and morphology of g-C3N4/CoO were investigated by a wide range of characterization methods. The obtained g-C3N4/CoO composites exhibited more-efficient utilization of solar energy than pure g-C3N4 did, resulting in higher photocatalytic activity for H2 evolution. The optimum photoactivity in H2 evolution under visible-light irradiation for g-C3N4/CoO composites with a CoO mass content of 0.5 wt % (651.3 μmol h-1 g-1) was up to 3 times as high as that of pure g-C3N4 (220.16 μmol h-1 g-1). The remarkably increased photocatalytic performance of g-C3N4/CoO composites was mainly attributed to the synergistic effect of the junction or interface formed between g-C3N4 and CoO.
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Affiliation(s)
| | | | | | | | | | - Bradley D Fahlman
- Department of Chemistry & Biochemistry and Science of Advanced Materials Program, Central Michigan University , Mount Pleasant, Michigan 48859, United States
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25
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Jana TK, Pal A, Mandal AK, Sarwar S, Chakrabarti P, Chatterjee K. Photocatalytic and Antibacterial Performance of α-Fe2
O3
Nanostructures. ChemistrySelect 2017. [DOI: 10.1002/slct.201700294] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- T. K. Jana
- Dept of Physics and Technophysics; Vidyasagar University; Midnapore - 721102 India
| | - A. Pal
- Dept of Physics and Technophysics; Vidyasagar University; Midnapore - 721102 India
| | - A. K. Mandal
- Chemical Biology Laboratory; Dept. of Sericulture; Raiganj University; Raiganj - 733134 India
| | - S. Sarwar
- Department of Biochemistry; Bose Institute; Kolkata 700054 India
| | - P. Chakrabarti
- Department of Biochemistry; Bose Institute; Kolkata 700054 India
| | - K. Chatterjee
- Dept of Physics and Technophysics; Vidyasagar University; Midnapore - 721102 India
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26
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Zhou J, Chen W, Sun C, Han L, Qin C, Chen M, Wang X, Wang E, Su Z. Oxidative Polyoxometalates Modified Graphitic Carbon Nitride for Visible-Light CO 2 Reduction. ACS APPLIED MATERIALS & INTERFACES 2017; 9:11689-11695. [PMID: 28339181 DOI: 10.1021/acsami.7b01721] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Developing a photocatalysis system for converting CO2 to valuable fuels or chemicals is a promising strategy to address global warming and fossil fuel consumption. Exploring photocatalysts with high-performance and low-cost has been two ultimate goals toward photoreduction of CO2. Herein, noble-metal-free polyoxometalates (Co4) with oxidative ability was first introduced into g-C3N4 resulted in inexpensive hybrid materials (Co4@g-C3N4) with staggered band alignment. The staggered composited materials show a higher activity of CO2 reduction than bare g-C3N4. An optimized Co4@g-C3N4 hybrid sample exhibited a high yield (107 μmol g-1 h-1) under visible-light irradiation (λ ≥ 420 nm), meanwhile maintaining high selectivity for CO production (94%). After 10 h of irradiation, the production of CO reached 896 μmol g-1. Mechanistic studies revealed the introduction of Co4 not only facilitate the charge transfer of g-C3N4 but greatly increased the surface catalytic oxidative ability. This work creatively combined g-C3N4 with oxidative polyoxometalates which provide novel insights into the design of low-cost photocatalytic materials for CO2 reduction.
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Affiliation(s)
- Jie Zhou
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Weichao Chen
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Chunyi Sun
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Lu Han
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Chao Qin
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Mengmeng Chen
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Xinlong Wang
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Enbo Wang
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China
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27
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Synthesis, Property Characterization and Photocatalytic Activity of the Polyaniline/BiYTi₂O₇ Polymer Composite. Polymers (Basel) 2017; 9:polym9030069. [PMID: 30970757 PMCID: PMC6432484 DOI: 10.3390/polym9030069] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/01/2017] [Accepted: 02/09/2017] [Indexed: 11/16/2022] Open
Abstract
A new polyaniline/BiYTi2O7 polymer composite was synthesized by chemical oxidation in-situ polymerization method for the first time. The effect of polyaniline doping on structural and catalytic properties of BiYTi2O7 was reported. The structural properties of novel polyaniline/BiYTi2O7 have been characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and UV-Vis DRS. The results showed that BiYTi2O7 crystallized well with the pyrochlore-type structure, stable cubic crystal system by space group Fd3m. The lattice parameter or band gap energy of BiYTi2O7 was found to be a = 10.2132 Å or 2.349 eV, respectively. The novel polyaniline/BiYTi2O7 polymer composite possessed higher catalytic activity compared with BiYTi2O7 or nitrogen doped TiO2 for photocatalytic degradation of Azocarmine G under visible light irradiation. Additionally, the Azocarmine G removal efficiency was boosted from 3.0% for undoped BiYTi2O7 to 78.0% for the 10% polyaniline-modified BiYTi2O7, after only 60 min of reaction. After visible light irradiation for 330 min with polyaniline/BiYTi2O7 polymer composite as photocatalyst, complete removal and mineralization of Azocarmine G was observed. The photocatalytic degradation of Azocarmine G followed first-order reaction kinetics. Ultimately, the promoter action of H2O2 for photocatalytic degradation of AG with BiYTi2O7 as catalyst in the wastewater was discovered.
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28
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Kou J, Lu C, Wang J, Chen Y, Xu Z, Varma RS. Selectivity Enhancement in Heterogeneous Photocatalytic Transformations. Chem Rev 2017; 117:1445-1514. [DOI: 10.1021/acs.chemrev.6b00396] [Citation(s) in RCA: 511] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Rajender S. Varma
- Regional
Center of Advanced Technologies and Materials, Faculty of Science,
Department of Physical Chemistry, Palacky University, Šlechtitelů
11, 783 71 Olomouc, Czech Republic
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29
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Xu K, Feng J. Superior photocatalytic performance of LaFeO3/g-C3N4 heterojunction nanocomposites under visible light irradiation. RSC Adv 2017. [DOI: 10.1039/c7ra08715b] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
New type of Z-scheme LaFeO3/g-C3N4 heterostructures were successfully prepared and the enhanced photocatalytic hydrogen evolution and degradation activities are presented.
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Affiliation(s)
- Ke Xu
- Department of Biochemistry
- Guizhou Education University
- Guiyang
- China
- Department of Chemistry
| | - Jian Feng
- Department of Chemistry
- School of Basic Medical Science
- Guizhou Medical University
- Guiyang
- China
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30
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Li X, Yu J, Wageh S, Al-Ghamdi AA, Xie J. Graphene in Photocatalysis: A Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6640-6696. [PMID: 27805773 DOI: 10.1002/smll.201600382] [Citation(s) in RCA: 333] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 08/09/2016] [Indexed: 05/22/2023]
Abstract
In recent years, heterogeneous photocatalysis has received much research interest because of its powerful potential applications in tackling many important energy and environmental challenges at a global level in an economically sustainable manner. Due to their unique optical, electrical, and physicochemical properties, various 2D graphene nanosheets-supported semiconductor composite photocatalysts have been widely constructed and applied in different photocatalytic fields. In this review, fundamental mechanisms of heterogeneous photocatalysis, including thermodynamic and kinetics requirements, are first systematically summarized. Then, the photocatalysis-related properties of graphene and its derivatives, and design rules and synthesis methods of graphene-based composites are highlighted. Importantly, different design strategies, including doping and sensitization of semiconductors by graphene, improving electrical conductivity of graphene, increasing eloectrocatalytic active sites on graphene, strengthening interface coupling between semiconductors and graphene, fabricating micro/nano architectures, constructing multi-junction nanocomposites, enhancing photostability of semiconductors, and utilizing the synergistic effect of various modification strategies, are thoroughly summarized. The important applications including photocatalytic pollutant degradation, H2 production, and CO2 reduction are also addressed. Through reviewing the significant advances on this topic, it may provide new opportunities for designing highly efficient 2D graphene-based photocatalysts for various applications in photocatalysis and other fields, such as solar cells, thermal catalysis, separation, and purification.
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Affiliation(s)
- Xin Li
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, P. R. China
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - S Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed A Al-Ghamdi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Jun Xie
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
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31
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Feng H, Wang Y, Wang C, Diao F, Zhu W, Mu P, Yuan L, Zhou G, Rosei F. Defect-induced enhanced photocatalytic activities of reduced α-Fe2O3 nanoblades. NANOTECHNOLOGY 2016; 27:295703. [PMID: 27285480 DOI: 10.1088/0957-4484/27/29/295703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bicrystalline α-Fe2O3 nanoblades (NBs) synthesized by thermal oxidation of iron foils were reduced in vacuum, to study the effect of reduction treatment on microstructural changes and photocatalytic properties. After the vacuum reduction, most bicrystalline α-Fe2O3 NBs transform into single-layered NBs, which contain more defects such as oxygen vacancies, perfect dislocations and dense pores. By comparing the photodegradation capability of non-reduced and reduced α-Fe2O3 NBs over model dye rhodamine B (RhB) in the presence of hydrogen peroxide, we find that vacuum-reduction induced microstructural defects can significantly enhance the photocatalytic efficiency. Even after 10 cycles, the reduced α-Fe2O3 NBs still show a very high photocatalytic activity. Our results demonstrate that defect engineering is a powerful tool to enhance the photocatalytic performance of nanomaterials.
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Affiliation(s)
- Honglei Feng
- College of Physics & The Cultivation Base for State Key Laboratory, Qingdao University, No. 308 Ningxia Road, Qingdao, 266071, People's Republic of China
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32
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Ong WJ, Tan LL, Ng YH, Yong ST, Chai SP. Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability? Chem Rev 2016; 116:7159-329. [DOI: 10.1021/acs.chemrev.6b00075] [Citation(s) in RCA: 4328] [Impact Index Per Article: 541.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Wee-Jun Ong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Yun Hau Ng
- Particles
and Catalysis Research Group (PARTCAT), School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Siek-Ting Yong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Siang-Piao Chai
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
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33
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Balbuena J, Cruz-Yusta M, Cuevas AL, López-Escalante MC, Martín F, Pastor A, Sánchez L. Enhanced activity of α-Fe2O3 for photocatalytic NO removal. RSC Adv 2016. [DOI: 10.1039/c6ra19167c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Unique electrospun α-Fe2O3 fibers of singular nano-architecture were obtained exhibiting a highly enhanced NO conversion photocatalytic efficiency
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Affiliation(s)
- J. Balbuena
- Inorganic Chemistry Department
- Campus de Rabanales
- Universidad de Córdoba
- Córdoba
- Spain
| | - M. Cruz-Yusta
- Inorganic Chemistry Department
- Campus de Rabanales
- Universidad de Córdoba
- Córdoba
- Spain
| | - A. L. Cuevas
- Unidad de Nanotecnología
- Edificio de Bioinnovación
- Universidad de Málaga
- Málaga
- Spain
| | | | - F. Martín
- Chemical Engineering Department
- Campus de Teatinos
- Universidad de Málaga
- Málaga
- Spain
| | - A. Pastor
- Inorganic Chemistry Department
- Campus de Rabanales
- Universidad de Córdoba
- Córdoba
- Spain
| | - L. Sánchez
- Inorganic Chemistry Department
- Campus de Rabanales
- Universidad de Córdoba
- Córdoba
- Spain
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34
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Wan H, Liu T, Liu X, Pan J, Zhang N, Ma R, Liang S, Wang H, Qiu G. Acetate-induced controlled-synthesis of hematite polyhedra enclosed by high-activity facets for enhanced photocatalytic performance. RSC Adv 2016. [DOI: 10.1039/c6ra07809e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Uniform hematite polyhedra enclosed by high-activity facets could be selectively synthesized by acetates-induced synthetic strategy.
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Affiliation(s)
- Hao Wan
- School of Minerals Processing and Bioengineering
- Central South University
- Changsha
- P. R. China
- School of Materials Science and Engineering
| | - Tao Liu
- School of Minerals Processing and Bioengineering
- Central South University
- Changsha
- P. R. China
- School of Materials Science and Engineering
| | - Xiaohe Liu
- School of Minerals Processing and Bioengineering
- Central South University
- Changsha
- P. R. China
- School of Materials Science and Engineering
| | - Jiangling Pan
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
| | - Ning Zhang
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
| | - Renzhi Ma
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
- International Center for Materials Nanoarchitectonics (MANA)
| | - Shuquan Liang
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
| | - Haidong Wang
- School of Minerals Processing and Bioengineering
- Central South University
- Changsha
- P. R. China
| | - Guanzhou Qiu
- School of Minerals Processing and Bioengineering
- Central South University
- Changsha
- P. R. China
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35
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Li P, Yan X, He Z, Ji J, Hu J, Li G, Lian K, Zhang W. α-Fe2O3 concave and hollow nanocrystals: top-down etching synthesis and their comparative photocatalytic activities. CrystEngComm 2016. [DOI: 10.1039/c5ce02097b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Top-down etching synthesis of α-Fe2O3 concave and hollow nanocrystals.
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Affiliation(s)
- Pengwei Li
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Xiaole Yan
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Zaiqian He
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Jianlong Ji
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Jie Hu
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Gang Li
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
| | - Kun Lian
- Center for Advanced Microstructures and Devices
- Louisiana State University
- , USA
- School of Nano-Science and Nano-Engineering
- Suzhou & Collaborative Innovation Center of Suzhou Nano Science and Technology
| | - Wendong Zhang
- Micro-Nano System Research Center, College of Information Engineering
- Taiyuan University of Technology
- Taiyuan 030024, China
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36
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Wang J, Zhang N, Su J, Guo L. α-Fe2O3 quantum dots: low-cost synthesis and photocatalytic oxygen evolution capabilities. RSC Adv 2016. [DOI: 10.1039/c6ra04464f] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Hematite quantum dots with an average size of 3 nm are synthesized by a facile microwave-assisted reverse micelle method.
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Affiliation(s)
- Jian Wang
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an
- China
| | - Ning Zhang
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an
- China
| | - Jinzhan Su
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an
- China
| | - Liejin Guo
- International Research Center for Renewable Energy (IRCRE)
- State Key Laboratory of Multiphase Flow in Power Engineering (MFPE)
- Xi'an Jiaotong University (XJTU)
- Xi'an
- China
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37
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Ultrasound enhanced photocatalytic properties of α-Fe2O3 nanoparticles for degradation of dyes used by textile industry. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2347-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Jin J, Yu J, Guo D, Cui C, Ho W. A Hierarchical Z-Scheme CdS-WO3 Photocatalyst with Enhanced CO2 Reduction Activity. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:5262-5271. [PMID: 26265014 DOI: 10.1002/smll.201500926] [Citation(s) in RCA: 264] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 05/10/2015] [Indexed: 06/04/2023]
Abstract
The development of an artificial photosynthetic system is a promising strategy to convert solar energy into chemical fuels. Here, a direct Z-scheme CdS-WO(3) photocatalyst without an electron mediator is fabricated by imitating natural photosynthesis of green plants. Photocatalytic activities of as-prepared samples are evaluated on the basis of photocatalytic CO(2) reduction to form CH(4) under visible light irradiation. These Z-scheme-heterostructured samples show a higher photocatalytic CO(2) reduction than single-phase photocatalysts. An optimized CdS-WO(3) heterostructure sample exhibits the highest CH(4) production rate of 1.02 μmol h(-1) g(-1) with 5 mol% CdS content, which exceeds the rates observed in single-phase WO(3) and CdS samples for approximately 100 and ten times under the same reaction condition, respectively. The enhanced photocatalytic activity could be attributed to the formation of a hierarchical direct Z-scheme CdS-WO(3) photocatalyst, resulting in an efficient spatial separation of photo-induced electron-hole pairs. Reduction and oxidation catalytic centers are maintained in two different regions to minimize undesirable back reactions of the photocatalytic products. The introduction of CdS can enhance CO(2) molecule adsorption, thereby accelerating photocatalytic CO(2) reduction to CH(4). This study provides novel insights into the design and fabrication of high-performance artificial Z-scheme photocatalysts to perform photocatalytic CO(2) reduction.
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Affiliation(s)
- Jian Jin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Daipeng Guo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Can Cui
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Luoshi Road 122, Wuhan, 430070, P. R. China
| | - Wingkei Ho
- Department of Science and Environmental Studies and Center for Education in Environmental Sustainability, The Hong Kong Institute of Education, Tai Po, N. T. Hong Kong, P. R. China
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39
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Pal J, Pal T. Faceted metal and metal oxide nanoparticles: design, fabrication and catalysis. NANOSCALE 2015; 7:14159-14190. [PMID: 26255749 DOI: 10.1039/c5nr03395k] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The review addresses new advances in metal, bimetallic, metal oxide, and composite particles in their nanoregime for facet-selective catalytic applications. The synthesis and growth mechanisms of the particles have been summarized in brief in this review with a view to develop critical examination of the faceted morphology of the particles for catalysis. The size, shape and composition of the particles have been found to be largely irrelevant in comparison to the nature of facets in catalysis. Thus selective high- and low-index facets have been found to selectively promote adsorption, which eventually leads to an effective catalytic reaction. As a consequence, a high density of atoms rest at the corners, steps, stages, kinks etc on the catalyst surface in order to host the adsorbate efficiently and catalyze the reaction. Again, surface atomic arrangement and bond length have been found to play a dominant role in adsorption, leading to effective catalysis.
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Affiliation(s)
- Jaya Pal
- Department of Chemistry, Indian Institute of Technology, Kharagpur 721302, India.
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40
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Lei W, Zhang T, Gu L, Liu P, Rodriguez JA, Liu G, Liu M. Surface-Structure Sensitivity of CeO2 Nanocrystals in Photocatalysis and Enhancing the Reactivity with Nanogold. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00620] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wanying Lei
- National Center
for Nanoscience and Technology, Beijing 100190, China
| | - Tingting Zhang
- National Center
for Nanoscience and Technology, Beijing 100190, China
| | - Lin Gu
- Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ping Liu
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - José A. Rodriguez
- Chemistry
Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Gang Liu
- National Center
for Nanoscience and Technology, Beijing 100190, China
| | - Minghua Liu
- National Center
for Nanoscience and Technology, Beijing 100190, China
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41
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Zhang T, Lei W, Liu P, Rodriguez JA, Yu J, Qi Y, Liu G, Liu M. Insights into the structure-photoreactivity relationships in well-defined perovskite ferroelectric KNbO 3 nanowires. Chem Sci 2015; 6:4118-4123. [PMID: 29218178 PMCID: PMC5707469 DOI: 10.1039/c5sc00766f] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/23/2015] [Indexed: 11/26/2022] Open
Abstract
1D perovskite-type orthorhombic KNbO3 nanowires display RhB photodegradation about two-fold as large as their monoclinic counterparts and a synergy between ferroelectric polarization and electronic structure in photoreactivity enhancement is uncovered.
Structure–function correlations are a central theme in heterogeneous (photo)catalysis. In this study, the geometric and electronic structure of perovskite ferroelectric KNbO3 nanowires with respective orthorhombic and monoclinic polymorphs have been systematically addressed. By virtue of aberration-corrected scanning transmission electron microscopy, we directly visualize surface photocatalytic active sites, measure local atomic displacements at an accuracy of several picometers, and quantify ferroelectric polarization combined with first-principles calculations. The photoreactivity of the as-prepared KNbO3 nanowires is assessed toward aqueous rhodamine B degradation under UV light. A synergy between the ferroelectric polarization and electronic structure in photoreactivity enhancement is uncovered, which accounts for the prominent reactivity order: orthorhombic > monoclinic. Additionally, by identifying new photocatalytic products, rhodamine B degradation pathways involving N-deethylation and conjugated structure cleavage are proposed. Our findings not only provide new insights into the structure–photoreactivity relationships in perovskite ferroelectric photocatalysts, but also have broad implications in perovskite-based water splitting and photovoltaics, among others.
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Affiliation(s)
- Tingting Zhang
- National Center for Nanoscience and Technology , Beijing 100190 , China . ; .,Institute of Materials Physics and Chemistry , School of Sciences , Northeastern University , Shenyang 110004 , China
| | - Wanying Lei
- National Center for Nanoscience and Technology , Beijing 100190 , China . ;
| | - Ping Liu
- Chemistry Department , Brookhaven National Laboratory , Upton , New York 11973 , USA
| | - José A Rodriguez
- Chemistry Department , Brookhaven National Laboratory , Upton , New York 11973 , USA
| | - Jiaguo Yu
- State Key Laboratory of Advance Technology for Material Synthesis and Processing , Wuhan University of Technology , Wuhan 430070 , China
| | - Yang Qi
- Institute of Materials Physics and Chemistry , School of Sciences , Northeastern University , Shenyang 110004 , China
| | - Gang Liu
- National Center for Nanoscience and Technology , Beijing 100190 , China . ;
| | - Minghua Liu
- National Center for Nanoscience and Technology , Beijing 100190 , China . ;
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42
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Gao Q, Luo J, Wang X, Gao C, Ge M. Novel hollow α-Fe2O3 nanofibers via electrospinning for dye adsorption. NANOSCALE RESEARCH LETTERS 2015; 10:176. [PMID: 25918495 PMCID: PMC4401480 DOI: 10.1186/s11671-015-0874-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 03/21/2015] [Indexed: 05/23/2023]
Abstract
Nanomaterials such as iron oxides and ferrites have been intensively investigated for water treatment and environmental remediation applications. In this work, hollow α-Fe2O3 nanofibers made of rice-like nanorods were successfully synthesized via a simple hydrothermal reaction on polyvinyl alcohol (PVA) nanofiber template followed by calcination. The crystallographic structure and the morphology of the as-prepared α-Fe2O3 nanofibers were characterized by X-ray diffraction, energy dispersive X-ray spectrometer, and scanning electron microscope. Batch adsorption experiments were conducted, and ultraviolet-visible spectra were recorded before and after the adsorption to investigate the dye adsorption performance. The results showed that hollow α-Fe2O3 fiber assembles exhibited good magnetic responsive performance, as well as efficient adsorption for methyl orange in water. This work provided a versatile strategy for further design and development of functional nanofiber-nanoparticle composites towards various applications.
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Affiliation(s)
- Qiang Gao
- />Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 China
- />State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai, 200438 China
| | - Jun Luo
- />Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 China
| | - Xingyue Wang
- />Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 China
| | - Chunxia Gao
- />Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 China
- />Institute of Orthopaedics, The First Affiliated Hospital, Soochow University, 708 Renmin Road, Suzhou, 215006 China
| | - Mingqiao Ge
- />Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi, 214122 China
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43
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Cao S, Low J, Yu J, Jaroniec M. Polymeric photocatalysts based on graphitic carbon nitride. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:2150-76. [PMID: 25704586 DOI: 10.1002/adma.201500033] [Citation(s) in RCA: 1360] [Impact Index Per Article: 151.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 12/13/2014] [Indexed: 05/19/2023]
Abstract
Semiconductor-based photocatalysis is considered to be an attractive way for solving the worldwide energy shortage and environmental pollution issues. Since the pioneering work in 2009 on graphitic carbon nitride (g-C3N4) for visible-light photocatalytic water splitting, g-C3N4 -based photocatalysis has become a very hot research topic. This review summarizes the recent progress regarding the design and preparation of g-C3N4 -based photocatalysts, including the fabrication and nanostructure design of pristine g-C3N4 , bandgap engineering through atomic-level doping and molecular-level modification, and the preparation of g-C3N4 -based semiconductor composites. Also, the photo-catalytic applications of g-C3N4 -based photocatalysts in the fields of water splitting, CO2 reduction, pollutant degradation, organic syntheses, and bacterial disinfection are reviewed, with emphasis on photocatalysis promoted by carbon materials, non-noble-metal cocatalysts, and Z-scheme heterojunctions. Finally, the concluding remarks are presented and some perspectives regarding the future development of g-C3N4 -based photocatalysts are highlighted.
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Affiliation(s)
- Shaowen Cao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, PR China
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44
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Xiang Q, Chen G, Lau TC. Effects of morphology and exposed facets of α-Fe2O3 nanocrystals on photocatalytic water oxidation. RSC Adv 2015. [DOI: 10.1039/c5ra09354f] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The catalytic activity of α-Fe2O3 nanocubes, nanoplates, nanoflakes and nanoparticles for visible light-driven water oxidation is strongly morphology-dependent; α-Fe2O3 nanocubes with exposed {012} facets exhibit far higher activity than nanosheets with exposed {001} facets.
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Affiliation(s)
- Quanjun Xiang
- Department of Biology and Chemistry
- City University of Hong Kong
- Hong Kong
- P. R. China
- College of Resources and Environment
| | - Gui Chen
- Department of Biology and Chemistry
- City University of Hong Kong
- Hong Kong
- P. R. China
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
| | - Tai-Chu Lau
- Department of Biology and Chemistry
- City University of Hong Kong
- Hong Kong
- P. R. China
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45
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Xu Q, Yu J, Zhang J, Zhang J, Liu G. Cubic anatase TiO2 nanocrystals with enhanced photocatalytic CO2 reduction activity. Chem Commun (Camb) 2015; 51:7950-3. [DOI: 10.1039/c5cc01087j] [Citation(s) in RCA: 186] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Anatase TiO2 nanocubes with exposed {100} and {001} facets show especially high photocatalytic activity toward CO2 reduction to methane and methanol.
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Affiliation(s)
- Quanlong Xu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
- Department of Physics
| | - Jun Zhang
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Jinfeng Zhang
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing
- Wuhan University of Technology
- Wuhan 430070
- P. R. China
| | - Gang Liu
- National Center for Nanoscience and Technology
- Beijing
- P. R. China
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