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Walter AD, Benamor H, Ferrer LM, Reji T, Curran T, Schwenk GR, Hadji M, Creighton MA, Barsoum MW. Self-sensitized photodegradation and adsorption of aqueous malachite green dye using one-dimensional titanium oxide nanofilaments. iScience 2024; 27:110647. [PMID: 39262812 PMCID: PMC11388164 DOI: 10.1016/j.isci.2024.110647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/05/2024] [Accepted: 07/30/2024] [Indexed: 09/13/2024] Open
Abstract
Truly one-dimensional titanium oxide nanofilaments with a lepidocrocite structure (1DLs) were explored in the adsorption and photocatalytic degradation of aqueous malachite green (MG), a toxic polluting dye. Decolorization is monitored by ultraviolet-visible spectroscopy, and mineralization is confirmed by total organic carbon analysis. The 1DL/MG flocs are characterized by scanning electron microscopy and X-ray diffraction. 1DLs, a colloidal nanomaterial, exhibit flocculating behavior while demonstrating high affinity for MG, with a maximum uptake of >680 mg/g rapidly via ion exchange. Additionally, 1DLs decolorize MG under visible light only, unlike most available titania products, via a self-sensitization effect. MG is decolorized by 1DLs by >70% in 30 min under 1 sun exposure of visible light. Counterintuitively, dye adsorption increases as the normalized concentration by mass of 1DL decreases. Demonstrating high adsorption capacity and dye mineralization supports the use of 1DLs in water treatment and self-sensitization for photoelectrochemical devices, like solar cells.
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Affiliation(s)
- Adam D Walter
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
| | - Hiba Benamor
- Laboratoire d'Etudes et Recherche en Technologie Industrielle, Université of Saad Dahlab Blida 1, Blida, Algeria
| | - Lucas M Ferrer
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
| | - Treesa Reji
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
| | - Tracey Curran
- Academy of Natural Sciences of Drexel University, Philadelphia, PA, USA
| | - Gregory R Schwenk
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
| | - Mohamed Hadji
- Laboratoire d'Etudes et Recherche en Technologie Industrielle, Université of Saad Dahlab Blida 1, Blida, Algeria
| | - Megan A Creighton
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, PA, USA
| | - Michel W Barsoum
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
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2
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Yanagimachi A, Kono T, Ota K, Torita T, Bonilla DR, Autrey DE, Badr HO, Barsoum MW. Investigation of Ultramicroporous Structure of One-Dimensional Lepidocrocite Titanates Using Carbon Dioxide and Nitrogen Gases. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39016446 DOI: 10.1021/acs.langmuir.4c01689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
The novel material, one-dimensional lepidocrocite (1DL) titanate, is attracting industrial and scientific interest because of its applicability to a wide range of practical applications and its ease of synthesis and scale up of production. In this study, we investigated the CO2 adsorption capability and pore structures of 1DL freeze-dried and lithium chloride washed air-dried powders. The synthesized 1DL was characterized by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. Using the constant-volume method, CO2 gas adsorption revealed that the 1DL exhibits type IV adsorption-desorption isotherms. The heats of adsorption obtained from the adsorption branches are lower than those obtained from the desorption branches. Brunauer-Emmett-Teller (BET) analysis, using N2 gas adsorption isotherms at 77 K showed that 1DL possesses 80.2 m2/g of BET specific surface area. Nonlocal density functional theory analysis indicated that two types of pores, meso-pores and ultramicro pores, exist in the 1DL freeze-dried powders. This work provides deep insights into the pore structures and CO2 adsorption mechanisms of 1DL powders.
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Affiliation(s)
| | - Takayuki Kono
- Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
| | - Kota Ota
- Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
| | - Takeshi Torita
- Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto 617-8555, Japan
| | - Daja R Bonilla
- Department of Chemistry & Materials Science, Fayetteville State University, Fayetteville, North Carolina 28301, United States
| | - Daniel E Autrey
- Department of Chemistry & Materials Science, Fayetteville State University, Fayetteville, North Carolina 28301, United States
| | - Hussein O Badr
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Michel W Barsoum
- Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
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3
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Badr HO, Barsoum MW. Hydroxide-Derived Nanostructures: Scalable Synthesis, Characterization, Properties, and Potential Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2402012. [PMID: 38722144 DOI: 10.1002/adma.202402012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/18/2024] [Indexed: 05/28/2024]
Abstract
Metal oxide nanostructures have received an increasing attention owing to their unique chemical and physical properties along with their widespread applications in various fields. This article provides an overview of the recent discovery - christened Hydroxides-Derived Nanostructures, or HDNs - in which hydroxide aqueous solutions (mostly tetramethylammonium hydroxide, TMAH) are reacted at temperatures < 100 °C and under atmospheric pressure with various metal-containing precursors to scalably prepare novel metal oxide nanostructures. In one case, a dozen commercial and earth abundant Ti-containing powders such as binary carbides, nitrides, borides, among others, are converted into new, 1D TiO2-based lepidocrocite (1DL) nanofilaments (NFs). Application-wise, the 1DLs show outstanding performance in a number of energy, environmental, and biomedical fields such as photo- and electrocatalysis, water splitting, lithium-sulfur and lithium-ion batteries, water purification, dye degradation, cancer therapy, and polymer composites. In addition to 1DL, the HDNs family encompasses other metal oxides nanostructures including magnetic Fe3O4 nanoparticles and MnO2 birnessite-based crystalline 2D flakes. The latter showed promise in electrochemical energy conversion and storage applications. The developed recipe provides a new vista in the molecular self-assembly synthesis of nanomaterials that can advance the field with a library of novel nanostructures with substantial implications in a multitude of fields.
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Affiliation(s)
- Hussein O Badr
- Department of Material Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
| | - Michel W Barsoum
- Department of Material Science and Engineering, Drexel University, Philadelphia, PA, 19104, USA
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4
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Schwenk GR, Walter AD, Barsoum MW. Solvent-Driven Self-Assembly of One-Dimensional Lepidocrocite Titanium-Oxide-Based Nanofilaments. NANO LETTERS 2024; 24:7584-7592. [PMID: 38775805 PMCID: PMC11212056 DOI: 10.1021/acs.nanolett.4c00921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/14/2024] [Accepted: 05/14/2024] [Indexed: 06/27/2024]
Abstract
Herein, the self-assembly of one-dimensional titanium oxide lepidocrocite nanofilaments in 10 different water miscible organic solvents was investigated. The nanofilament snippets, with minimal cross sections of ∼5 × 7 Å2 and lengths around 30 nm, begin as an aqueous colloidal suspension. Upon addition, and brief mixing, of the colloidal suspension into a given solvent, a multitude of morphologies─seemingly based on the hydrophilicity and polarity of the solvent─emerge. These morphologies vary between sheets, highly networked webs, and discrete fibers, all with no apparent change in the lepidocrocite structure. On the micro- and nanoscale, the morphologies are reminiscent of biological, rather than inorganic, materials. The results of this work give insight into the self-assembly of these materials and offer new pathways for novel macrostructures/morphologies assembled from these highly adsorbent and catalytically active low-dimensional materials.
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Affiliation(s)
| | | | - Michel W. Barsoum
- Department of Materials Science
and Engineering, Drexel University, 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
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5
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Liu T, Miao L, Yao F, Zhang W, Zhao W, Yang D, Feng Q, Hu D. Structure, Properties, Preparation, and Application of Layered Titanates. Inorg Chem 2024; 63:1-26. [PMID: 38109856 DOI: 10.1021/acs.inorgchem.3c03075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
As a typical cation-exchangeable layered compound, layered titanate has a unique open layered structure. Its excellent physical and chemical properties allow its wide use in the energy, environmental protection, electronics, biology, and other fields. This paper reviews the recent progress in the research on the structure, synthesis, properties, and application of layered titanates. Various reactivities, as well as the advantages and disadvantages, of different synthetic methods are discussed. The reaction mechanism and influencing factors of the ion exchange reaction, intercalation reaction, and exfoliation reaction are analyzed. The latest research progress on layered titanates and their modified products in the fields of photocatalysis, adsorption, electrochemistry, and other applications is summarized. Finally, the future development of layered titanate and its exfoliated product two-dimensional nanosheets is proposed.
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Affiliation(s)
- Tian Liu
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center of Advanced Ferroelectric Functional Materials, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Lei Miao
- Lab of Environmental Inorganic Materials Chemistry, Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-Ku, Sendai 980-8577, Japan
| | - Fangyi Yao
- Department of Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan
| | - Wenxiong Zhang
- Institute for Solid State Physics (ISSP), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 227-8581, Japan
| | - Weixing Zhao
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center of Advanced Ferroelectric Functional Materials, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Desuo Yang
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center of Advanced Ferroelectric Functional Materials, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
| | - Qi Feng
- Department of Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan
| | - Dengwei Hu
- Faculty of Chemistry and Chemical Engineering, Engineering Research Center of Advanced Ferroelectric Functional Materials, Key Laboratory of Functional Materials of Baoji, Baoji University of Arts and Sciences, 1 Hi-Tech Avenue, Baoji, Shaanxi 721013, China
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6
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Xue K, Jiang Y, Mofarah SS, Doustkhah E, Zhou S, Zheng X, Huang S, Wang D, Sorrell CC, Koshy P. Composition-driven morphological evolution of BaTiO 3 nanowires for efficient piezocatalytic hydrogen production. CHEMOSPHERE 2023; 338:139337. [PMID: 37442379 DOI: 10.1016/j.chemosphere.2023.139337] [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: 03/14/2023] [Revised: 05/31/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023]
Abstract
Hydrogen production from water by piezocatalysis is very attractive owing to its high energy efficiency and novelty. BaTiO3, a highly piezoelectric material, is particularly suitable for this application due to its high piezoelectric potential, non-toxic nature, and physicochemical stability. Owing to the critical role of morphology on properties, one-dimensional (1D) materials are expected to exhibit superior water-splitting performance and thus there is a need to optimise the processing conditions to develop outstanding piezocatalysts. In the present work, piezoelectric BaTiO3 nanowires (NWs) were hydrothermally synthesised with precursor Ba:Ti molar ratios of 1:1, 2:1, and 4:1. The morphology, defect chemistry, and hydrogen evolution reaction (HER) efficiency of the as-synthesised BaTiO3 NWs were systematically investigated. The results showed that the morphological features, aspect ratio, structural stability and defect contents of the 1D morphologies collectively have a significant impact on the HER efficiency. The morphological evolution mechanism of the 1D structures were described in terms of ion exchange and dissolution-growth processes of template-grown BaTiO3 NWs for different Ba:Ti molar ratios. Notably, the BaTiO3 NWs synthesised with Ba:Ti molar ratio of 2:1 displayed high crystallinity, good defect concentrations, and good structural integrity under ultrasonication, resulting in an outstanding HER efficiency of 149.24 μmol h-1g-1 which is the highest obtained for nanowire morphologies. These results highlight the importance of synthesis conditions for BaTiO3 NWs for generating excellent piezocatalytic water splitting performance. Additionally, post-ultrasonication tested BaTiO3 NWs demonstrated unexpected photocatalytic activity, with the BTO-1 sample (1:1 Ba:Ti) exhibiting 56% photodegradation of RhB in 2 h of UV irradiation.
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Affiliation(s)
- Kaili Xue
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Yue Jiang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Esmail Doustkhah
- Koç University Tüpraş Energy Center (KUTEM), 34450, Istanbul, Turkey
| | - Shujie Zhou
- Particles and Catalysis Research Group, School of Chemical Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Xiaoran Zheng
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Suchen Huang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Danyang Wang
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia
| | - Pramod Koshy
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW, 2052, Australia.
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7
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Üstünel T, Ide Y, Kaya S, Doustkhah E. Single-Atom Sn-Loaded Exfoliated Layered Titanate Revealing Enhanced Photocatalytic Activity in Hydrogen Generation. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2023; 11:3306-3315. [PMID: 36874193 PMCID: PMC9976351 DOI: 10.1021/acssuschemeng.2c06181] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/31/2023] [Indexed: 05/21/2023]
Abstract
Green H2 generation through layered materials plays a significant role among a wide variety of materials owing to their high theoretical surface area and distinctive features in (photo)catalysis. Layered titanates (LTs) are a class of these materials, but they suffer from large bandgaps and a layers' stacked form. We first address the successful exfoliation of bulk LT to exfoliated few-layer sheets via long-term dilute HCl treatment at room temperature without any organic exfoliating agents. Then, we demonstrate a substantial photocatalytic activity enhancement through the loading of Sn single atoms on exfoliated LTs (K0.8Ti1.73Li0.27O4). Comprehensive analysis, including time-resolved photoluminescence spectroscopy, revealed the modification of electronic and physical properties of the exfoliated layered titanate for better solar photocatalysis. Upon treating the exfoliated titanate in SnCl2 solution, a Sn single atom was successfully loaded on the exfoliated titanate, which was characterized by spectroscopic and microscopic techniques, including aberration-corrected transmission electron microscopy. The exfoliated titanate with an optimal Sn loading exhibited a good photocatalytic H2 evolution from water containing methanol and from ammonia borane (AB) dehydrogenation, which was not only enhanced from the pristine LT, but higher than conventional TiO2-based photocatalysts like Au-loaded P25.
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Affiliation(s)
- Tuğçe Üstünel
- Materials
Science and Engineering, Koç University, 34450 Istanbul, Turkey
- Koç
University Tüpraş Energy Center (KUTEM), 34450 Istanbul, Turkey
| | - Yusuke Ide
- International
Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department
of Chemistry and Life Science, Graduate School of Engineering Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Sarp Kaya
- Materials
Science and Engineering, Koç University, 34450 Istanbul, Turkey
- Koç
University Tüpraş Energy Center (KUTEM), 34450 Istanbul, Turkey
- Department
of Chemistry, Koç University, 34450 Istanbul, Turkey
- E-mail:
| | - Esmail Doustkhah
- Koç
University Tüpraş Energy Center (KUTEM), 34450 Istanbul, Turkey
- E-mail:
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8
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Doustkhah E, Hassandoost R, Yousef Tizhoosh N, Esmat M, Guselnikova O, Hussein N Assadi M, Khataee A. Ultrasonically-assisted synthesis of CeO 2 within WS 2 interlayers forming type II heterojunction for a VOC photocatalytic oxidation. ULTRASONICS SONOCHEMISTRY 2023; 92:106245. [PMID: 36463784 PMCID: PMC9719093 DOI: 10.1016/j.ultsonch.2022.106245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/21/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Here, we investigate the band structure, density of states, photocatalytic activity, and heterojunction mechanism of WS2 with CeO2 (CeO2@WS2) as a photoactive heterostructure. In this heterostructure, CeO2's growth within WS2 layers is achieved through ultrasonicating WS2 and intercalating CeO2's precursor within the WS2 interlayers, followed by hydrothermal treatment. Through a set of density functional calculations, we demonstrate that CeO2 and WS2 form an interface through a covalent bonding that can be highly stable. The electrochemical impedance spectroscopy (EIS) found that the CeO2@WS2 heterostructure exhibits a remarkably higher conductivity (22.23 mS cm-2) compared to either WS2 and CeO2, assignable to the interface in CeO2@WS2. Furthermore, in a physically mixed CeO2-WS2 where the interaction between particles is noncovalent, the resistance was significantly higher (0.67 mS cm-2), confirming that the heterostructure in the interface is covalently bonded. In addition, Mott-Schottky and the bandgap measurements through Tauc plots demonstrate that the heterojunction in CeO2 and WS2 is type II. Eventually, the CeO2@WS2 heterostructure indicated 446.7 µmol g -1 CO2 generation from photocatalytic oxidation of a volatile organic compound (VOC), formic acid, compared to WS2 and CeO2 alone.
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Affiliation(s)
- Esmail Doustkhah
- Koç University Tüpraş Energy Center (KUTEM), Department of Chemistry, Koç University, 34450 Istanbul, Turkey.
| | - Ramin Hassandoost
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Negar Yousef Tizhoosh
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran
| | - Mohamed Esmat
- International Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University (BSU), Beni-Suef 62511, Egypt
| | - Olga Guselnikova
- Research School of Chemistry & Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Avenue 30, Tomsk 634050, Russia
| | - M Hussein N Assadi
- RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Alireza Khataee
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471 Tabriz, Iran; Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey.
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9
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Doustkhah E, Esmat M, Fukata N, Ide Y, Hanaor DAH, Assadi MHN. MOF-derived nanocrystalline ZnO with controlled orientation and photocatalytic activity. CHEMOSPHERE 2022; 303:134932. [PMID: 35568217 DOI: 10.1016/j.chemosphere.2022.134932] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/19/2022] [Accepted: 05/07/2022] [Indexed: 05/27/2023]
Abstract
We show here that MOF-5, a sample Zn-based MOF, can uniquely transform into distinct zinc oxide nanostructures. Inspired by the interconversion synthesis of zeolites, we converted MOF-5 into nanocrystalline ZnO. We found the conversion of MOF-5 into ZnO to be tunable and straightforward simply by controlling the treatment temperature and choosing an appropriate structure-directing agent (SDA). Refined X-ray diffraction (XRD) patterns showed that a synthesis temperature of 180 °C (sample ZnO-180) was optimal for achieving high crystallinity. We examined ZnO-180 with high-resolution transmission electron microscopy (HRTEM), which confirmed that the samples were made of individual crystallites grown along the c-axis, or the (001) direction, thus exposing lower energy surfaces and corroborating the XRD pattern and the molecular dynamics calculations. Further investigations revealed that the obtained ZnO at 180 °C has a superior photocatalytic activity in degrading methylene blue to other ZnO nanostructures obtained at lower temperatures.
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Affiliation(s)
- Esmail Doustkhah
- Koç University Tüpraş Energy Center (KUTEM), Department of Chemistry, Koç University, 34450, Istanbul, Turkey; International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Ibaraki, Japan.
| | - Mohamed Esmat
- International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Ibaraki, Japan; Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University (BSU), Beni-Suef, 62511, Egypt
| | - Naoki Fukata
- International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Ibaraki, Japan
| | - Yusuke Ide
- International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Ibaraki, Japan
| | - Dorian A H Hanaor
- Technische Universität Berlin, Faculty III Process Sciences, Institute of Material Science and Technology, Chair of Advanced Ceramic Materials, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - M Hussein N Assadi
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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10
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Effects of Reaction Temperature on the Photocatalytic Activity of TiO2 with Pd and Cu Cocatalysts. Catalysts 2021. [DOI: 10.3390/catal11080966] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The aim of this study was to investigate the effects of reaction temperature on the photocatalytic activity of TiO2 with Pd and Cu cocatalysts. N2 sorption, transmission electron microscopy and high-resolution transmission electron microscopy were used to characterize the specific surface area, pore volume, pore size, morphology and metal distribution of the catalysts. The photocatalytic destruction of methylene blue under UV light irradiation was used to test its activity. The concentration of methylene blue in water was determined by UV-vis spectrophotometer. Pd/TiO2 catalyst was more active than Cu/TiO2 and TiO2. At 0–50 °C reaction temperature, the activity of TiO2 and Pd/TiO2 increased with an increase of reaction temperature. When the temperature was as high as 70 °C, the reaction rate of TiO2 drop slightly and Pd/TiO2 became less effective. In contrast, Cu/TiO2 was more active at room temperature than the other temperatures. The results indicate that the photocatalytic activity of the catalyst is influenced by the reaction temperature and the type of cocatalyst. When the reaction temperature is higher than 70 °C, the recombination of charge carriers will increase. The temperature range of 50–80 °C is regarded as the ideal temperature for effective photolysis of organic matter. The effects of reaction temperature mainly influence quantum effect, i.e., electron-hole separation and recombination.
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11
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Miyagawa M, Hirosawa F, Higuchi H, Takaba H. Inhomogeneity of Organically Modified Montmorillonite Revealed by Molecular Dynamics Simulation. ACS OMEGA 2021; 6:19314-19322. [PMID: 34337268 PMCID: PMC8320080 DOI: 10.1021/acsomega.1c02899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
The modification of an interlayer of layered materials by intercalation with an organoammonium ion has been a promising method to control the polarity of the two-dimensional nanospace. Montmorillonite is one of the best-known examples, and the modification with octadecyltrimethylammonium ion (Mont-C18) results in adsorption of anthracene and pyrene together with specific excimer emission, while the nanostructure is yet to be uncovered at the molecular level because the gallery height is only ca. 27 Å. We, herein, investigated the nanostructure of this nanocomposite by molecular dynamics (MD) simulation, combined with analysis of molecular orientations against the Mont layer. The gallery height of Mont-C18 was well consistent with the experimental value, which was linearly increased along with the intercalation of anthracene. Anthracene was segregated on the Mont layer with its short and long molecular axes vertical in the early and late stages, respectively. In contrast, C18 was initially rather horizontal, forming the so-called pseudotrimolecular layer. Pushed out by anthracene, distribution and orientation of C18 were gradually changed: the third molecular layer was distinctly observed in the center of the interlayer in the early stage, and the orientation was changed to vertical in the late stage. Thus, the continuous increase in the gallery height is ascribed to soft response of C18 to the intercalation. Summarizing the abovementioned results, it was concluded that Å-order inhomogeneity is introduced in the interlayer by the intercalation of anthracene, which is significant in ideal design of the two-dimensional nanospace.
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12
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Mani D, Tahawy R, Doustkhah E, Shanmugam M, Arivanandhan M, Jayavel R, Ide Y. A rutile TiO 2 nanobundle as a precursor of an efficient visible-light photocatalyst embedded with Fe 2O 3. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00565k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A rutile nanobundle was synthesized via a layered titanate’s conversion at room temperature and used as a precursor of a mesoporous rutile embedded with a tiny Fe2O3 cocatalyst to improve the visible-light photocatalytic activity.
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Affiliation(s)
- Durai Mani
- Centre for Nanoscience and Technology, Anna University, Chennai 600025, India
- International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Department of Civil Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | - Rafat Tahawy
- International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Esmail Doustkhah
- International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Mahalingam Shanmugam
- Centre for Nanoscience and Technology, Anna University, Chennai 600025, India
- Department of Civil Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
| | | | - Ramasamy Jayavel
- Centre for Nanoscience and Technology, Anna University, Chennai 600025, India
| | - Yusuke Ide
- International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
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13
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Abdelaal HM, Ide Y. Microporous Titanate Nanofibers as Excellent Adsorbents for Water Purification and Softening. CHEM LETT 2020. [DOI: 10.1246/cl.200446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Haitham Mohammad Abdelaal
- Department of Refractories, Ceramics and Building Materials, The National Research Centre, El-Buhouth st., Dokki, Cairo, 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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Co-Catalytic Action of Faceted Non-Noble Metal Deposits on Titania Photocatalyst for Multielectron Oxygen Reduction. Catalysts 2020. [DOI: 10.3390/catal10101145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In order to clarify the reason of often reported low photocatalytic activity of rutile titania compared to that of anatase titania and the sluggish kinetics for oxygen reduction of rutile titania, in this study, faceted copper(I) oxide (Cu2O) particles (FCPs), i.e., cube, cuboctahedron and octahedron, were deposited onto rutile particles by an in-situ wet chemical method, and the co-catalytic action of FCPs was studied in the oxidative decomposition of acetic acid. The oxygen reduction reaction kinetics of bare and FCP-loaded titania samples in photodecomposition of organic compounds were investigated by light-intensity dependence measurement. FCPs serve as the specific sites (sink) which accumulate excited electrons to drive multielectron oxygen reduction reactions, as the counter reaction in photodecomposition of organic compounds by positive holes, which significantly improves the photocatalytic activity of rutile titania particles.
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15
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Aalinejad M, Pesyan NN, Doustkhah E. Diaza crown-type macromocycle (kryptofix 22) functionalised carbon nanotube for efficient Ni2+ loading; A unique catalyst for cross-coupling reactions. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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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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17
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Jahan S, Salman M, Alias YB, Abu Bakar AFB, Mansoor F, Kanwal S. Polymer-modified mesoporous silica microcubes (P@MSMCs) for the synergistic oxidative entrapment of Ag(i), Ti(iv), and Zn(ii) from natural river water. Dalton Trans 2020; 49:8265-8273. [PMID: 32463410 DOI: 10.1039/d0dt01274b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we demonstrate a hydrothermal route to the one-pot synthesis of polymeric mesoporous silica microcubes (P@MSMCs) for the adsorption of heavy metal ions. During the synthesis of P@MSMCs from column silica gel, the roles and combination of the polymer and an etchant were characterized. Moreover, the porosity of P@MSMCs was tailored by adjusting the reaction temperature between 75 °C and 200 °C. The characterization through UV, FTIR, FESEM, XRD, BET, and EDX techniques exhibited that P@MSMCs have a well-ordered mesoporous structure with cubic morphology. The P@MSMCs had a diameter of 2 μm, with an average pore volume and pore size of 0.69 cm3 g-1 and 10.08 nm, respectively. The results indicated that the P@MSMCs have excellent adsorption capacity for Ag(i), Ti(iv), and Zn(ii) due to the formation of an aggregated complex. These aggregations led to affordable density difference-based separation of these metal ions through centrifugation, filtration or simple decantation. The removal efficiencies for Ag(i), Ti(iv), and Zn(ii) were observed to be 520, 720, and 850 mg g-1, respectively. The kinetic studies demonstrated that the adsorption performance fitted well to the pseudo-second-order kinetic model. The as-synthesized P@MSMCs were stable in the wide pH range of 4-8. Significantly, the recycling or reuse results displayed effective adsorption performance of these P@MSMCs for up to 5 cycles. The adsorption results obtained herein will promote the development of similar strategies for the removal of heavy metal ions from natural water.
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Affiliation(s)
- Shanaz Jahan
- Department of Geology, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
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18
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Natsathaporn P, Jenjob R, Pattanasattayavong P, Yiamsawas D, Crespy D. Photocatalytic degradation of pesticides by nanofibrous membranes fabricated by colloid-electrospinning. NANOTECHNOLOGY 2020; 31:215603. [PMID: 31995794 DOI: 10.1088/1361-6528/ab713d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photocatalytic degradation of organic pollutants is a promising way to clean wastewater. Herein, we develop and compare two processes for fabricating nanofibrous membranes with photocatalytic properties. Hybrid nanofibers are produced by colloid-electrospinning and composed of metal oxide nanoparticles on sintered SiO2 nanoparticles. The latter serves as support for the photocatalyst and preserves the structural integrity of nanofibers. Adsorption of metal salts on crosslinked polymer/SiO2 fibers followed by calcination allows for the obtention of fibers with large amounts of metal oxide. Nanofibrous membranes with supported ZnO, In2O3, or mixture of both, display photocatalytic activity upon UV irradiation. The membranes can degrade a dye and an organophosphate pesticide more effectively than membranes directly fabricated from the calcination of metal oxides.
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Affiliation(s)
- Papada Natsathaporn
- Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
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19
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Saothayanun TK, Sirinakorn TT, Ogawa M. Ion Exchange of Layered Alkali Titanates (Na 2Ti 3O 7, K 2Ti 4O 9, and Cs 2Ti 5O 11) with Alkali Halides by the Solid-State Reactions at Room Temperature. Inorg Chem 2020; 59:4024-4029. [PMID: 32105454 DOI: 10.1021/acs.inorgchem.9b03695] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Ion exchange of layered alkali titanates (Na2Ti3O7, K2Ti4O9, and Cs2Ti5O11) with several alkali metal halides surprisingly proceeded in the solid-state at room temperature. The reaction was governed by thermodynamic parameters and was completed within a shorter time when the titanates with a smaller particle size were employed. On the other hand, the required time for the ion exchange was shorter in the cases of Cs2Ti5O11 than those of K2Ti4O9 irrespective of the particle size of the titanates, suggesting faster diffusion of the interlayer cation in the titanate with lower layer charge density.
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Affiliation(s)
- Taya Ko Saothayanun
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Thipwipa Tip Sirinakorn
- School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
| | - Makoto Ogawa
- School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand
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20
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Yu S, Han B, Lou Y, Qian G, Wang Z. Nano Anatase TiO2 Quasi-Core–Shell Homophase Junction Induced by a Ti3+ Concentration Difference for Highly Efficient Hydrogen Evolution. Inorg Chem 2020; 59:3330-3339. [DOI: 10.1021/acs.inorgchem.0c00277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Siqi Yu
- State Key laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Bing Han
- State Key laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yunchao Lou
- State Key laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guodong Qian
- State Key laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhiyu Wang
- State Key laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
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21
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2D Mesoporous Channels of PMO; a Platform for Cluster-Like Pt Synthesis and Catalytic Activity in Nitrophenol Reduction. Catalysts 2020. [DOI: 10.3390/catal10020167] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Thiourea-bridged organosiloxane is used to synthesize a periodic mesoporous organosilica (PMO). Since this PMO has an S-enriched surface, owing to thiourea functional groups, it exhibits strong coordination toward Pt ions, and it shows a high tunability in the Pt nanoparticles size. This hybrid mesoporous material is employed as a catalyst in the efficient reduction reaction of 4-nitrophenol to 4-aminophenol at room temperature in an aqueous media.
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22
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Jing X, Zhang Y, Wang Q, Cheng Y, Meng C. Rapid Combustion Synthesis of Metal Oxides Species Highly Dispersed on Layered Silicate Magadiite. ChemistrySelect 2020. [DOI: 10.1002/slct.201902311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xuyang Jing
- School of Chemical Engineering Dalian University of Technology Dalian 116024 PR China
| | - Yifu Zhang
- School of Chemical Engineering Dalian University of Technology Dalian 116024 PR China
| | - Qiushi Wang
- School of Chemical Engineering Dalian University of Technology Dalian 116024 PR China
| | - Yan Cheng
- School of Chemical Engineering Dalian University of Technology Dalian 116024 PR China
| | - Changgong Meng
- School of Chemical Engineering Dalian University of Technology Dalian 116024 PR China
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23
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Abstract
The properties and applications of microporous layered silicates, having both intralayer micropores and interlayer spaces, are reviewed.
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Affiliation(s)
- Esmail Doustkhah
- International Centre for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Ibaraki 305-0044
- Japan
| | - Yusuke Ide
- International Centre for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Ibaraki 305-0044
- Japan
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24
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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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