1
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Üstünel T, Ide Y, Kaya S, Matsumoto H, Igarashi K, Doustkhah E. Single-Atom Sn-Loaded Exfoliated Layered Titanate Shows Photocatalytic Activity in Hydrogen Generation. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1356-1357. [PMID: 37613721 DOI: 10.1093/micmic/ozad067.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Tuğçe Üstünel
- Materials Science and Engineering/Koç University, Istanbul, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul, Turkey
| | - Yusuke Ide
- International Center for Materials Nanoarchitechtonics (WPI-MANA)/National Institute for Materials Science, Tsukuba, Ibaraki, Japan
- Department of Chemistry and Life Science, Graduate School of Engineering Science/Yokohama National University, Hodogaya-ku, Yokohama, Japan
| | - Sarp Kaya
- Materials Science and Engineering/Koç University, Istanbul, Turkey
- Koç University Tüpraş Energy Center (KUTEM), Istanbul, Turkey
| | - Hiroaki Matsumoto
- Nanostructure Characterization Group, Solution Development Department, Hitachi High-Tech Corporation, Core Technology and Solutions Business Group, Hitachinaka, Ibaraki, Japan
| | - Keisuke Igarashi
- Nanostructure Characterization Group, Solution Development Department, Hitachi High-Tech Corporation, Core Technology and Solutions Business Group, Hitachinaka, Ibaraki, Japan
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2
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Photocatalytic Hydrogen Generation from Aqueous Methanol Solution over n-Butylamine-Intercalated Layered Titanate H2La2Ti3O10: Activity and Stability of the Hybrid Photocatalyst. Catalysts 2022. [DOI: 10.3390/catal12121556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
The stability of platinized n-butylamine-intercalated layered titanate H2La2Ti3O10 during the process of photocatalytic hydrogen production from aqueous methanol under UV irradiation has been thoroughly investigated by means of XRD, CHN, TG, 13C NMR, BET, SEM and GC-MS analysis. It was revealed that n-butylamine completely abandons the interlayer space and transforms into n-butyraldehyde within 3 h of the reaction, while the particle morphology and specific surface area of the photocatalyst are preserved. The resulting solid phase contains carbon in at least two different oxidation states, which are attributed to the intermediate products of methanol oxidation bound to the perovskite matrix. The activity of the photocatalyst formed in this way is stable in time and strongly depends on the medium pH, which is not typical of either the parent H2La2Ti3O10 or TiO2. An approximate linear equation φ ≈ 29−2∙pH holds for the apparent quantum efficiency of hydrogen production in the 220–340 nm range at 1 mol. % methanol concentration. In the acidic medium, the photocatalyst under study outperforms the platinized H2La2Ti3O10 by more than one order of magnitude. The variation in methanol concentration allowed a maximum quantum efficiency of hydrogen production of 44% at 10 mol. % to be reached.
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3
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Durai M, Chauhan D, Durai M, Saravanan M, Kumaravel S, Erusappan E, Ahn YH. Layered KTO/BiOCl nanostructures for the efficient visible light photocatalytic degradation of harmful dyes. CHEMOSPHERE 2022; 306:135659. [PMID: 35820480 DOI: 10.1016/j.chemosphere.2022.135659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Novel KTO/BiOCl nanostructured photocatalysts with various weight proportions were synthesized using a simple hydrothermal process. The as-prepared nanostructured composite catalysts were characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, UV-vis diffused reflectance spectroscopy, Raman spectroscopy, field emission scanning electron microscopy, transmission electron microscopy with high resolution, X-ray photoelectron spectroscopy, and photoluminescence (PL). The photocatalytic activity of prepared catalysts was examined using Rhodamine B (RhB) and Congo Red (CR) as the aimed pollutants. BiOCl nanoparticles were distributed uniformly on the surface of the K2Ti4O9 nanobelts. The optical properties showed that the layered titanate with BiOCl nanostructured photocatalyst displayed improved photoresponsivity due to the narrowed bandgap. The PL results showed that the greater inhibition of the electron-hole recombination process and KTO/BiOCl with a mass proportion of 20% revealed the most favorable photocatalytic behavior. The rate constant of RhB and CR degradation was five times as high as that of the bare BiOCl and titanate. The superior photocatalytic performance was attributed to the advancement of heterojunction between the KTO nanobelt and BiOCl. The KTO/BiOCl nanostructure is a promising visible, active photocatalyst, and the photocatalytic mechanism is discussed using the possible band structures of BiOCl and KTO.
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Affiliation(s)
- Mani Durai
- Environmental Science and Engineering Laboratory, Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Deepak Chauhan
- Environmental Science and Engineering Laboratory, Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Mathivanan Durai
- Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan
| | | | - Sakthivel Kumaravel
- Department of Applied Science and Technology, Anna University, Chennai, 600025, India
| | - Elangovan Erusappan
- Department of Applied Science and Technology, Anna University, Chennai, 600025, India
| | - Young-Ho Ahn
- Environmental Science and Engineering Laboratory, Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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4
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Ikram M, Shahid H, Haider J, Haider A, Naz S, Ul-Hamid A, Shahzadi I, Naz M, Nabgan W, Ali S. Nb/Starch-Doped ZnO Nanostructures for Polluted Water Treatment and Antimicrobial Applications: Molecular Docking Analysis. ACS OMEGA 2022; 7:39347-39361. [PMID: 36340133 PMCID: PMC9631753 DOI: 10.1021/acsomega.2c05569] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/11/2022] [Indexed: 06/01/2023]
Abstract
Nb/starch-doped ZnO quantum dots (QDs) were prepared by a coprecipitation route. A fixed quantity of starch (st) and different concentrations (2 and 4%) of niobium (Nb) were doped in a ZnO lattice. To gain a better understanding of synthesized nanostructures, a systematic study was carried out utilizing several characterization methods. The goal of this research was to undertake methylene blue (MB) dye degradation with a synthetic material and also study its antibacterial properties. The phase structure, morphology, functional groups, optical properties, and elemental compositions of synthesized samples were investigated. Our study showed that ZnO QDs enhanced photocatalytic activity (PCA), resulting in effective MB degradation, in addition to showing good antimicrobial activity against Gram-negative relative to Gram-positive bacteria. Molecular docking study findings were in good agreement with the observed in vitro bactericidal potential and suggested ZnO, st-ZnO, and Nb/st-ZnO as possible inhibitors against dihydrofolate reductase (DHFRE. coli) and DNA gyraseE. coli.
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Affiliation(s)
- Muhammad Ikram
- Solar
Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore54000, Punjab, Pakistan
| | - Huma Shahid
- Department
of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, 54000Lahore, Pakistan
| | - Junaid Haider
- Tianjin
Institute of Industrial Biotechnology, Chinese
Academy of Sciences, Tianjin300308, China
| | - Ali Haider
- Department
of Clinical Sciences, Faculty of Veterinary and Animal Sciences, Muhammad Nawaz Shareef University of Agriculture, Multan66000, Pakistan
| | - Sadia Naz
- Tianjin
Institute of Industrial Biotechnology, Chinese
Academy of Sciences, Tianjin300308, China
| | - Anwar Ul-Hamid
- Core
Research Facilities, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran31261, Saudi Arabia
| | - Iram Shahzadi
- Punjab University
College of Pharmacy, Allama Iqbal Campus, University of the Punjab, Lahore54000, Pakistan
| | - Misbah Naz
- Department
of Chemistry, Division of Science & Technology, University of Education, Lahore54770, Pakistan
| | - Walid Nabgan
- Departament
d’Enginyeria Química, Universitat
Rovira i Virgili, Av
Països Catalans 26, 43007Tarragona, Spain
| | - Salamat Ali
- Department
of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, 54000Lahore, Pakistan
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5
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Kurnosenko SA, Voytovich VV, Silyukov OI, Rodionov IA, Zvereva IA. Photocatalytic Hydrogen Production from Aqueous Solutions of Glucose and Xylose over Layered Perovskite-like Oxides HCa 2Nb 3O 10, H 2La 2Ti 3O 10 and Their Inorganic-Organic Derivatives. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2717. [PMID: 35957149 PMCID: PMC9370262 DOI: 10.3390/nano12152717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/03/2022] [Accepted: 08/06/2022] [Indexed: 06/15/2023]
Abstract
Nowadays, the efficient conversion of plant biomass components (alcohols, carbohydrates, etc.) into more energy-intensive fuels, such as hydrogen, is one of the urgent scientific and technological problems. The present study is the first one focused on the photoinduced hydrogen evolution from aqueous D-glucose and D-xylose using layered perovskite-like oxides HCa2Nb3O10, H2La2Ti3O10, and their organically modified derivatives that have previously proven themselves as highly active photocatalysts. The photocatalytic performance was investigated for the bare compounds and products of their surface modification with a 1 mass. % Pt cocatalyst. The photocatalytic experiments followed an innovative scheme including dark stages as well as the control of the reaction suspension's pH and composition. The study has revealed that the inorganic-organic derivatives of the layered perovskite-like oxides can provide efficient conversion of carbohydrates into hydrogen fuel, being up to 8.3 times more active than the unmodified materials and reaching apparent quantum efficiency of 8.8%. Based on new and previously obtained data, it was shown that the oxides' interlayer space functions as an additional reaction zone in the photocatalytic hydrogen production and the contribution of this zone to the overall activity is dependent on the steric characteristics of the sacrificial agent used.
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Affiliation(s)
| | | | - Oleg I. Silyukov
- Department of Chemical Thermodynamics and Kinetics, Institute of Chemistry, Saint Petersburg State University, 199034 Saint Petersburg, Russia
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6
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Machida S, Kato R, Hasegawa K, Gotoh T, Katsumata KI, Yasumori A. Photoreduction of Copper Ions Using Silica–Surfactant Hybrid and Titanium (IV) Oxide under Sulfuric Acid Conditions. MATERIALS 2022; 15:ma15155132. [PMID: 35897565 PMCID: PMC9331726 DOI: 10.3390/ma15155132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 06/28/2022] [Accepted: 07/19/2022] [Indexed: 02/05/2023]
Abstract
Photoreduction of Cu2+ ions to Cu metal by titanium(IV) oxide (TiO2) was conducted in the presence of a silica–surfactant hybrid under sulfuric acid conditions. After irradiation, a dark-red color, reflections due to Cu metal in the X-ray diffraction pattern, and peaks due to Cu 2p1/2 and 2p3/2 in the X-ray photoelectron spectrum indicated the precipitation of Cu metal in the product. In addition, an increase in the Brunauer–Emmett–Teller specific surface area from 36 and 45 m2/g for the silica–surfactant and TiO2, respectively, to 591 m2/g for the product, and a decrease in the intensity of the C-H stretching band in the Fourier–transform infra-red spectra implied the removal of surfactant during the reaction. These characteristics were never observed when TiO2 was used solely. Therefore, this study indicated that the photoreduction of Cu2+ ions to Cu metal by TiO2 was facilitated under the sulfuric acid medium, where the surfactants extracted from silica–surfactant hybrids by protons in the acidic condition were successfully photo-oxidized by TiO2. Thus, this study presents a new application of the conversion of a silica–surfactant hybrid into mesoporous silicas.
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Affiliation(s)
- Shingo Machida
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; (R.K.); (K.H.); (K.-i.K.); (A.Y.)
- Correspondence:
| | - Reo Kato
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; (R.K.); (K.H.); (K.-i.K.); (A.Y.)
| | - Kaishi Hasegawa
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; (R.K.); (K.H.); (K.-i.K.); (A.Y.)
| | - Takahiro Gotoh
- Material Characterization Central Laboratory, School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan;
| | - Ken-ichi Katsumata
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; (R.K.); (K.H.); (K.-i.K.); (A.Y.)
| | - Atsuo Yasumori
- Department of Material Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan; (R.K.); (K.H.); (K.-i.K.); (A.Y.)
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7
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Photocatalytic Activity of n-Alkylamine and n-Alkoxy Derivatives of Layered Perovskite-like Titanates H2Ln2Ti3O10 (Ln = La, Nd) in the Reaction of Hydrogen Production from an Aqueous Solution of Methanol. Catalysts 2021. [DOI: 10.3390/catal11111279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Two series of hybrid inorganic-organic derivatives, obtained via the modification of protonated Ruddlesden–Popper phases H2Ln2Ti3O10 (Ln = La, Nd) with intercalated n-alkylamines and grafted n-alkoxy groups, have been systematically investigated in relation to photocatalytic hydrogen production from a model of 1 mol % aqueous solution of methanol for the first time. Photocatalytic measurements were performed both for bare samples and for their composites with Pt nanoparticles as a cocatalyst using an advanced scheme, including dark stages, monitoring of the volume concentration of the sample in the reaction suspension during the experiment, shifts of its pH and possible exfoliation of layered compounds into nanolayers. It was found that the incorporation of organic components into the interlayer space of the titanates increases their photocatalytic activity up to 117 times compared with that of the initial compounds. Additional platinization of the hybrid samples’ surface allowed for achieving apparent quantum efficiency of hydrogen evolution of more than 40%. It was established that the photocatalytic activity of the hybrid samples correlates with the hydration degree of their interlayer space, which is considered a separate reaction zone in photocatalysis, and that hydrogen indeed generates from the aqueous methanol solution rather than from organic components of the derivatives.
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8
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Synthesis of n-Alkoxy Derivatives of Layered Perovskite-Like Niobate HCa2Nb3O10 and Study of Their Photocatalytic Activity for Hydrogen Production from an Aqueous Solution of Methanol. Catalysts 2021. [DOI: 10.3390/catal11080897] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A series of hybrid inorganic–organic niobates HCa2Nb3O10×ROH, containing n-alkoxy groups of primary alcohols (R = Me, Et, Pr, Bu, Hx, and Dc) grafted in the interlayer space, has been studied for the first time in relation to photocatalytic hydrogen generation from a model 1 mol % aqueous solution of methanol under ultraviolet irradiation. Photocatalytic activity was measured both for bare samples and for their composites with Pt nanoparticles as a cocatalyst. The advanced measurement scheme allowed monitoring the volume concentration of a sample in a suspension during the experiment, its pH, and possible exfoliation of layered compounds into nanolayers. In the series of n-alkoxy derivatives, the maximum rate of hydrogen evolution was achieved over a Pt-loaded ethoxy derivative HCa2Nb3O10×EtOH/Pt. Its apparent quantum efficiency of 20.6% in the 220–350 nm range was found not to be caused by changes in the light absorption region or specific surface area upon ethanol grafting. Moreover, the amounts of hydrogen released during the measurements significantly exceeded those of interlayer organic components, indicating that hydrogen is generated from the reaction solution rather than from the hybrid material.
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9
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Khan S, Ikari H, Suzuki N, Nakata K, Terashima C, Fujishima A, Katsumata KI, Rodríguez-González V. One-Pot Synthesis of Anatase, Rutile-Decorated Hydrogen Titanate Nanorods by Yttrium Doping for Solar H 2 Production. ACS OMEGA 2020; 5:23081-23089. [PMID: 32954158 PMCID: PMC7495753 DOI: 10.1021/acsomega.0c02855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
We have prepared yttrium (Y)-doped hydrogen titanate nanorods (HTN) by a microwave-assisted hydrothermal method. Y-doped HTN showed much improved photocatalytic activities for both H2 evolution and dye decomposition. H2 production from a methanol-water solution under UV-visible light for 7 h was enhanced by a factor of 5.5 with 1 wt % Y-doping. Doping with Y3+ ions reduced the band gap of HTN by ∼0.28 eV and induced new phases of anatase and rutile. High photocatalysis by Y-doping was attributed to enhanced light absorption (smaller band gap) and effective charge separation (heterojunction). To optimize H2 production, a series of experiments examining effects of doping concentrations and non-noble surface metal (e.g., Ni, Cu, Co) loading were carefully performed. Y-doping in this work is a new and promising approach for synthesizing highly active HTN by producing the HTN/rutile/anatase heterostructure within the one-pot method.
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Affiliation(s)
- Sovann Khan
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Hiroshi Ikari
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Norihiro Suzuki
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- Research
Center for Space Colony, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Kazuya Nakata
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- Graduate
School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-0012, Japan
| | - Chiaki Terashima
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- Research
Center for Space Colony, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Akira Fujishima
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
| | - Ken-ichi Katsumata
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- Research
Center for Space Colony, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- Department
of Materials Science and Technology, Faculty of Industrial Science
and Technology, Tokyo University of Science, 6-3-1 Niijuku,
Katsushika-ku, Tokyo 125-8585, Japan
| | - Vicente Rodríguez-González
- Photocatalysis
International Research Center, Tokyo University
of Science, 2641 Yamazaki, Noda-shi, Chiba 278-8510, Japan
- División
de Materiales Avanzados, Instituto Potosino
de Investigación Científica y Tecnológica (IPICYT), Camino a la Presa San José
2055, Lomas 4a Sección, San Luis Potosí 78216, Mexico
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10
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Voytovich VV, Kurnosenko SA, Silyukov OI, Rodionov IA, Minich IA, Zvereva IA. Study of n-alkylamine Intercalated Layered Perovskite-Like Niobates HCa 2Nb 3O 10 as Photocatalysts for Hydrogen Production From an Aqueous Solution of Methanol. Front Chem 2020; 8:300. [PMID: 32391326 PMCID: PMC7191077 DOI: 10.3389/fchem.2020.00300] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 03/26/2020] [Indexed: 11/29/2022] Open
Abstract
A series of hybrid niobates HCa2Nb3O10×RNH2, containing n-alkylamines (R = Me, Et, Pr, Bu, Hx, Oc) intercalated into the interlayer space, has been thoroughly studied concerning the photocatalytic hydrogen production from a model aqueous solution of methanol for the first time. All the hybrid photocatalysts were synthesized by the conventional ceramic technique followed by protonation and intercalation of n-alkylamines. The products were characterized using XRD, Raman, IR and diffuse reflectance spectroscopy, TGA, CHN-analysis and SEM. Photocatalytic measurements were conducted according to an advanced scheme taking into account possible changes in the photocatalyst concentration because of sedimentation, pH shifts and exfoliation of the samples into nanoplatelets. Special attention was also paid to the feasible improvement of the photocatalytic activity of the samples via their modification with Pt nanoparticles as a cocatalyst. In the series of amine derivatives, the highest rate of hydrogen generation was demonstrated by the Pt-loaded HCa2Nb3O10×BuNH2 reaching apparent quantum efficiency of 13% in the 220–340 nm range. The initial HCa2Nb3O10 showed comparable efficiency of 8.3% that is greater than for other amine derivatives. It was demonstrated that for the investigated samples the photocatalytic activity correlates with their ability of water intercalation.
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Affiliation(s)
- Vladimir V Voytovich
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Sergei A Kurnosenko
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Oleg I Silyukov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Ivan A Rodionov
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Iana A Minich
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
| | - Irina A Zvereva
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg, Russia
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11
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Erusappan E, Thiripuranthagan S, Durai M, Kumaravel S, Vembuli T. Photocatalytic performance of visible active boron nitride supported ZnFe 2O 4 (ZnFe 2O 4/BN) nanocomposites for the removal of aqueous organic pollutants. NEW J CHEM 2020. [DOI: 10.1039/d0nj01272f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
ZnFe2O4/BN nanocomposites were synthesized using solvothermal method. The microscopic images revealed uniform dispersion of ZnFe2O4 nanospheres on the surface of BN nanosheets. PL studies showed lower e−/h+ pair recombination. ZnFe2O4/9.3% BN showed outstanding photocatalytic activity.
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Affiliation(s)
- Elangovan Erusappan
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
| | | | - Mani Durai
- Centre for Nanoscience and Technology
- A.C. Tech
- Anna University
- Chennai
- India
| | - Sakthivel Kumaravel
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
| | - Thanigaivel Vembuli
- Catalysis Laboratory
- Department of Applied Science and Technology
- A.C. Tech
- Anna University
- Chennai
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12
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Mani D, Mathivanan D, Chang H, Sakthivel K, Elangovan E, Sivakumar T, Arivanandhan M, Jayavel R. A facile synthesis of novel ε-Fe 2O 3 grafted 2D h-BN nanostructures for enhanced visible active photocatalytic applications. NEW J CHEM 2020. [DOI: 10.1039/d0nj02321c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Solvothermally synthesized h-BN/ε-Fe2O3 nanocomposite catalyst exhibited enhanced photocatalytic activity compared to bare h-BN and c-BN catalysts.
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Affiliation(s)
- Durai Mani
- Centre for Nanoscience and Technology
- Anna University
- Chennai 600025
- India
| | - Durai Mathivanan
- Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Ho Chang
- Department of Mechanical Engineering and Graduate Institute of Manufacturing Technology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Kumaravel Sakthivel
- Department of Applied Science and Technology
- Anna University
- Chennai 600025
- India
| | - Erusappan Elangovan
- Department of Applied Science and Technology
- Anna University
- Chennai 600025
- India
| | | | | | - Ramasamy Jayavel
- Centre for Nanoscience and Technology
- Anna University
- Chennai 600025
- India
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13
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Yousef AK, Sanad M, Rashad MM, El-Sayed AAY, Ide Y. Facile Synthesis of Layered Titanate/Rutile Heterojunction Photocatalysts. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Ahmed K. Yousef
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Moustafa Sanad
- Central Metallurgical Research & Development Institute, P.O. Box 87, Helwan 11421, Egypt
| | - Mohamed M. Rashad
- Central Metallurgical Research & Development Institute, P.O. Box 87, Helwan 11421, Egypt
| | - Abdel-Aziz Y. El-Sayed
- Chemistry Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt
| | - Yusuke Ide
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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14
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Xu N, Huang H, Ouyang H, Wang H. Preparation of the heterojunction catalyst N-doping carbon quantum dots/P25 and its visible light photocatalytic activity. Sci Rep 2019; 9:9971. [PMID: 31292484 PMCID: PMC6620477 DOI: 10.1038/s41598-019-46277-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 06/25/2019] [Indexed: 01/25/2023] Open
Abstract
N-doping carbon quantum dots were successfully loaded on P25 nanoparticles (denoted as N-CDs/P25) by facile hydrothermal process, and their morphology and chemical structure were systematically studied. The carrier of N-CDs can significantly broaden the photoresponse range of the P25 to the visible region, accelerate charge transportation and separation. Application of the N-CDs/P25 material for the photocatalytic decomposition of Rhodamine B (RhB) gave improved activity relative to P25. The best degradation activity obtained at 6mL N-CDs/P25 under visible light irradiation, which shows a 13.06 fold photocatalytic activity over P25. Radical trapping control experiment and Electron Paramagnetic Resonance (EPR) measurements have been applied to explore the photodegradation dynamic and visible-light driven degradation mechanism. This work provides new insights into the fabrication of N-doping carbon quantum dots/TiO2 composite and is promising to open new possibilities in the application of carbon-TiO2 composites as the photocatalysts in the environmental protection issues.
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Affiliation(s)
- Ning Xu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Hongqin Huang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Hao Ouyang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Huigang Wang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
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15
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Liu Q, Zhan H, Zhu H, Sun Z, Bell J, Bo A, Gu Y. Atomic-scale investigation on the ultra-large bending behaviours of layered sodium titanate nanowires. NANOSCALE 2019; 11:11847-11855. [PMID: 31184691 DOI: 10.1039/c9nr02082a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A study on the mechanical properties of one-dimensional layered titanate nanomaterials is crucial since they demonstrate important applications in various fields. Here, we conducted ex situ and in situ atomic-scale investigation on the bending properties of a kind of ceramic-layered titanate (Na2Ti2O4(OH)2) nanowire using transmission electron microscopy. The nanowires showed flexibility along the 100 direction and could obtain a maximum bending strain of nearly 37%. By analysing the defect behaviours, the unique bending properties of this ceramic material were found to correlate with a novel arrangement of dislocations, an active dislocation nucleation and movement along the axial direction resulting from the weak electrostatic interaction between the TiO6 layers and the low b/a ratio. These results provide a pioneering and key understanding on the bending behaviours of layered titanate nanowire families and potentially other one-dimensional nanomaterials with layered crystalline structures.
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Affiliation(s)
- Qiong Liu
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, GPO Box 2434, 4001, Brisbane, QLD, Australia.
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16
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Esmat M, Farghali AA, El-Dek SI, Khedr MH, Yamauchi Y, Bando Y, Fukata N, Ide Y. Conversion of a 2D Lepidocrocite-Type Layered Titanate into Its 1D Nanowire Form with Enhancement of Cation Exchange and Photocatalytic Performance. Inorg Chem 2019; 58:7989-7996. [PMID: 31135144 DOI: 10.1021/acs.inorgchem.9b00722] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Layered titanates with one-dimensional (1D) shapes have been an important class of nanomaterials due to their combination of 1D and 2D fascinating properties. Among many layered titanates, lepidocrocite-type layered titanates have significant advantages such as superior intercalation and exfoliation properties, while the synthesis of the 1D-shape forms is still challenging. Here, we report on a facile one-pot hydrothermal conversion of a lepidocrocite-type layered titanate into the corresponding nanowire-shape form. The reaction mechanism involves the decomposition of the starting layered titanate into 1D small segments which assemble into the nanowire. This new nanowire shows properties resulting from the combination of 1D and 2D nanostructural features, excellent cation exchange ability, and high photoinduced charge separation and photocatalytic efficiency. As a demonstration, we evaluate the nanowire as a sequestrating material capable of collecting toxic cations, like Cd2+, from water and photoreducing them (immobilizing them tightly). We find that the nanowire shows an efficient and ultrafast photoimmobilization activity, whereas the starting layered titanate and a benchmark TiO2 photocatalyst (P25) show no activity under the identical conditions. The photoimmobilization rate (within 1 min) is considerably faster than the cation exchange rates reported for state-of-the-art cation exchangers (with no photoimmobilization ability). The nanowire used for photoimmobilization reactions is easily recovered from water by decantation, showing the possible practical use for safe disposal of toxic cations in the environment.
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Affiliation(s)
- Mohamed Esmat
- International Center for Materials Nanoarchitechtonics (MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan.,Graduate School of Pure and Applied Sciences , University of Tsukuba , Tsukuba , Ibaraki 305-8573 , Japan.,Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS) , Beni-Suef University (BSU) , Beni-Suef 62511 , Egypt
| | - Ahmed A Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS) , Beni-Suef University (BSU) , Beni-Suef 62511 , Egypt
| | - Samaa I El-Dek
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS) , Beni-Suef University (BSU) , Beni-Suef 62511 , Egypt
| | - Mohamed H Khedr
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS) , Beni-Suef University (BSU) , Beni-Suef 62511 , Egypt
| | - Yusuke Yamauchi
- Australian Institute for Bioengineering and Nanotechnology (AIBN) and School of Chemical Engineering , The University of Queensland , Brisbane , QLD 4072 , Australia
| | - Yoshio Bando
- International Center for Materials Nanoarchitechtonics (MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan.,Australian Institute for Innovative Materials , University of Wollongong , Squires Way , North Wollongong , NSW 2500 , Australia.,Institute of Molecular Plus , Tianjin University . No. 11 Building, No. 92 Weijin Road , Nankai District, Tianjin 300072 , P. R. China
| | - Naoki Fukata
- International Center for Materials Nanoarchitechtonics (MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan.,Graduate School of Pure and Applied Sciences , University of Tsukuba , Tsukuba , Ibaraki 305-8573 , Japan
| | - Yusuke Ide
- International Center for Materials Nanoarchitechtonics (MANA) , National Institute for Materials Science (NIMS) , 1-1 Namiki , Tsukuba , Ibaraki 305-0044 , Japan
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17
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Zirak M, Oveisi H, Lin J, Bando Y, Alshehri AA, Kim J, Ide Y, Hossain MSA, Malgras V, Yamauchi Y. Synthesis of CdS/ZnO Hybrid Nanoarchitectured Films with Visible Photocatalytic Activity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Mohammad Zirak
- Department of Materials and Polymer Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran
| | - Hamid Oveisi
- Department of Materials and Polymer Engineering, Hakim Sabzevari University, Sabzevar 9617976487, Iran
| | - Jianjian Lin
- Key Laboratory of Sensor Analysis of Tumor Marker (Ministry of Education), Shandong Key Laboratory of Biochemical Analysis, and Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology (QUST), Qingdao 266042, P. R. China
| | - Yoshio Bando
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW 2500, Australia
| | | | - Jeonghun Kim
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yusuke Ide
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Md. Shahriar A. Hossain
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
- School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Victor Malgras
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yusuke Yamauchi
- Key Laboratory of Sensor Analysis of Tumor Marker (Ministry of Education), Shandong Key Laboratory of Biochemical Analysis, and Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology (QUST), Qingdao 266042, P. R. China
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD 4072, Australia
- School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia
- Department of Plant and Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, South Korea
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18
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Ide Y, Shirae W, Takei T, Mani D, Henzie J. Merging Cation Exchange and Photocatalytic Charge Separation Efficiency in an Anatase/K2Ti4O9 Nanobelt Heterostructure for Metal Ions Fixation. Inorg Chem 2018; 57:6045-6050. [DOI: 10.1021/acs.inorgchem.8b00538] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yusuke Ide
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
| | - Wataru Shirae
- Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050, Japan
| | - Toshiaki Takei
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
| | - Durai Mani
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
- Center for Nanoscience and Technology, Anna University, Chennai 600025, India
| | - Joel Henzie
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan
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19
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Hattori H, Eguchi M, Ide Y, Sano T. Enhanced Photocatalytic Activity of a Layered Titanate Achieved via Simple Mixing with TiO2-Based Photocatalysts as Additives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hideya Hattori
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527
| | - Miharu Eguchi
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
| | - Yusuke Ide
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044
| | - Tsuneji Sano
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527
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