1
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Trujillo-Casarreal JD, Morales-Jiménez JI, Núñez-Luna BP, Barrera-Rendón EM, Rodríguez González V. Unraveling the antimicrobial activity of CuS functionalized titanates under visible LED light irradiation. CHEMOSPHERE 2024; 359:142317. [PMID: 38735492 DOI: 10.1016/j.chemosphere.2024.142317] [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: 02/23/2024] [Revised: 04/17/2024] [Accepted: 05/09/2024] [Indexed: 05/14/2024]
Abstract
Titanate nanotubes (TNs) functionalized with CuS nanoparticles using the microwave-assisted hydrothermal method were characterized via XRD, Raman spectroscopy, UV-Vis spectrophotometry, and N2 physisorption. The as-synthesized CuS/TNs had anatase as the main crystalline phase and the band-gap energy was in the visible region, 2.9 eV. The TNs were recrystallized on titania and functionalized with CuS, forming spherical bundles. SEM showed agglomerates of cauliflower-like semispherical particles. The antimicrobial photoactive assets were evaluated against the bacteria Staphylococcus aureus and Escherichia coli. Inhibition was clearly visible in S. aureus after the first 20 min of exposure to a 6-W LED irradiation lamp. The visible-light catalyzed completely and irreversibly the inactivation of S. aureus after 60 min, however, in the case of E. coli, this material only slightly disturbed its growth, which was recovered after 60 min. The successful result obtained with S. aureus can be explained by the fact that it lacks periplasmic superoxide dismutase (SOD) but has staphyloxanthin for external protection against ROS. However, the CuS/TN particles could release Cu2+ ions, which got attached to bacterium structures or entered the cytoplasm; these events together with the generation of ROS under visible LED light helped inactivate quickly staphyloxanthin, thus inflicting permanent damage to the periplasmic membrane.
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Affiliation(s)
- José Domingo Trujillo-Casarreal
- Instituo Potosino de Investigación Científica y Tecnológica (IPICYT), División de Materiales Avanzados, Camino a la presa San José 2055, Lomas 4a Sección, 78216, San Luis Potosí, SLP, Mexico
| | - Jesús I Morales-Jiménez
- Departamento el Hombre y su Ambiente, Universidad Autónoma Metropolitana-Xochimilco, Calzada del Hueso 1100, Villa Quietud, Coyoacán, Ciudad de México, 04960, Mexico
| | - Blanca P Núñez-Luna
- Instituo Potosino de Investigación Científica y Tecnológica (IPICYT), División de Materiales Avanzados, Camino a la presa San José 2055, Lomas 4a Sección, 78216, San Luis Potosí, SLP, Mexico
| | - Eva M Barrera-Rendón
- Instituo Potosino de Investigación Científica y Tecnológica (IPICYT), División de Materiales Avanzados, Camino a la presa San José 2055, Lomas 4a Sección, 78216, San Luis Potosí, SLP, Mexico
| | - Vicente Rodríguez González
- Instituo Potosino de Investigación Científica y Tecnológica (IPICYT), División de Materiales Avanzados, Camino a la presa San José 2055, Lomas 4a Sección, 78216, San Luis Potosí, SLP, Mexico.
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2
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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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3
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Saha P, Shaheen Shah S, Ali M, Nasiruzzaman Shaikh M, Aziz MA, Saleh Ahammad AJ. Cobalt Oxide-Based Electrocatalysts with Bifunctionality for High-Performing Rechargeable Zinc-Air Batteries. CHEM REC 2024; 24:e202300216. [PMID: 37651034 DOI: 10.1002/tcr.202300216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/16/2023] [Indexed: 09/01/2023]
Abstract
In recent years, the rapid growth in renewable energy applications has created a significant demand for efficient energy storage solutions on a large scale. Among the various options, rechargeable zinc-air batteries (ZABs) have emerged as an appealing choice in green energy storage technology due to their higher energy density, sustainability, and cost-effectiveness. Regarding this fact, a spotlight is shaded on air electrode for constructing high-performance ZABs. Cobalt oxide-based electrocatalysts on the air electrode have gained significant attention due to their extraordinary features. Particularly, exploration and integration of bifunctional behavior for energy storage has remarkably promoted both ORR and OER to facilitate the overall performance of the battery. The plot of this review is forwarded towards in-depth analysis of the latest advancements in electrocatalysts that are based on cobalt oxide and possess bifunctional properties along with an introduction of the fundamental aspects of ZABs, Additionally, the topic entails an examination of the morphological variations and mechanistic details mentioning about the synthesis processes. Finally, a direction is provided for future research endeavors through addressing the challenges and prospects in the advancement of next-generation bifunctional electrocatalysts to empower high-performing ZABs with bifunctional cobalt oxide.
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Affiliation(s)
- Protity Saha
- Department of Chemistry, Jagannath University, Dhaka, 1100, Bangladesh
- present address: Department of Environmental Science, Bangladesh University of Professionals (BUP), Dhaka, 1216, Bnagladesh
| | - Syed Shaheen Shah
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan
| | - Muhammad Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - M Nasiruzzaman Shaikh
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - Md Abdul Aziz
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum & Minerals, KFUPM Box 5040, Dhahran, 31261, Saudi Arabia
| | - A J Saleh Ahammad
- Department of Chemistry, Jagannath University, Dhaka, 1100, Bangladesh
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4
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Bhaskaran G, Rethinasabapathy M, Shin J, Ranjith KS, Lee HU, Son WK, Han YK, Ryu T, Huh YS. Layered hydrated-titanium-oxide-laden reduced graphene oxide composite as a high-performance negative electrode for selective extraction of Li via membrane capacitive deionization. J Colloid Interface Sci 2023; 650:752-763. [PMID: 37441968 DOI: 10.1016/j.jcis.2023.07.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 07/15/2023]
Abstract
In this work, we initially prepared layered lithium titanate (Li2TiO3) using a solid-state reaction. Then Li+ of Li2TiO3 were acid-eluded with Hydrochloric acid to obtain hydrated titanium oxide (H2TiO3). Different weight percentages (50%, 60%, 70%, 80%, and 90%) of the as-prepared H2TiO3 were deposited on a conductive reduced graphene oxide (rGO) matrix to obtain a series of rGO/ H2TiO3 composites. Of the prepared composites, rGO/H2TiO3-60% showed excellent current density, high specific capacitance, and rapid ion diffusion. An asymmetric MCDI (membrane capacitive deionization) cell fabricated with activated carbon as the anode and rGO/H2TiO3-60% as the cathode displayed outstanding Li+ electrosorption capacity (13.67 mg g-1) with a mean removal rate of 0.40 mg g-1 min-1 in a 10 mM LiCl aqueous solution at 1.8 V. More importantly, the rGO/H2TiO3-60% composite electrode exhibited exceptional Li+ selectivity, superior cyclic stability up to 100,000 s, and a Li+ sorption capacity retention of 96.32% after 50 adsorption/desorption cycles. The excellent Li+ extraction obtained by MCDI using the rGO/H2TiO3-60% negative electrode was putatively attributed to: (i) ion exchange between Li+ and H+ of H2TiO3; (ii) the presence of narrow lattice spaces in H2TiO3 suitable for selective Li+ capture; (iii) capture of Li+ by isolated and hydrogen-bonded hydroxyl groups of H2TiO3; and (iv) enhanced interfacial contact and transfer of large numbers of Li+ ions from the electrolyte to H2TiO3 achieved by compositing H2TiO3 with a highly conductive rGO matrix.
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Affiliation(s)
- Gokul Bhaskaran
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Muruganantham Rethinasabapathy
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea
| | - Junho Shin
- Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea
| | | | - Hyun Uk Lee
- Division of Material Analysis and Research, Korea Basic Science Institute, Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Won Keun Son
- Innochemtech Co., Ltd., Daejeon 34302, Republic of Korea
| | - Young-Kyu Han
- Department of Energy and Material Engineering, Dongguk University-Seoul, Seoul, Republic of Korea.
| | - Taegong Ryu
- Resources Utilization Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Republic of Korea.
| | - Yun Suk Huh
- NanoBio High-Tech Materials Research Center, Department of Biological Sciences and Bioengineering, Inha University, 100 Inha-ro, Incheon 22212, Republic of Korea.
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5
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Morel J, McNeilly O, Grundy S, Brown T, Gunawan C, Amal R, Scott JA. Nanoscale Titanium Surface Engineering via Low-Temperature Hydrothermal Etching for Enhanced Antimicrobial Properties. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46247-46260. [PMID: 37738302 DOI: 10.1021/acsami.3c09525] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Bioinspired nanotopography artificially fabricated on titanium surfaces offers a solution for the rising issue of postoperative infections within orthopedics. On a small scale, hydrothermal etching has proven to deliver an effective antimicrobial nanospike surface. However, translation to an industrial setting is limited by the elevated synthesis temperature (150 °C) and associated equipment requirements. Here, for the first time, we fabricate surface nanostructures using comparatively milder synthesis temperatures (75 °C), which deliver physicochemical properties and antimicrobial capability comparable to the high-temperature surface. Using a KOH etchant, the simultaneous formation of titania and titanate crystals at both temperatures produces a one-dimensional nanostructure array. Analysis indicated that the formation mechanism comprises dissolution and reprecipitation processes, identifying the deposited titanates as hydrated layered tetra-titanates (K2Ti4O9·nH2O). A proposed nanospike formation mechanism was confirmed through the identification of a core and outer shell for individual nanostructures, primarily comprised of titanates and titania, respectively. Etching conditions dictated crystalline formation, favoring a thicker titanate core for nanorods under higher synthesis temperatures and etchant concentrations. A bactericidal investigation showed the efficacy against Gram-negative bacteria for a representative low-temperature nanosurface (34.4 ± 14.4%) was comparable to the higher temperature nanosurface (34.0 ± 17.0%), illustrating the potential of low-temperature hydrothermal synthesis. Our results provide valuable insight into the applicability of low-temperature etching protocols that are more favorable in large-scale manufacturing settings.
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Affiliation(s)
- James Morel
- School of Chemical Engineering, University of New South Wales, Kensington, NSW 2052, Australia
| | - Oliver McNeilly
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Sarah Grundy
- School of Chemical Engineering, University of New South Wales, Kensington, NSW 2052, Australia
| | - Toby Brown
- Corin Australia, Pymble, NSW 2073, Australia
| | - Cindy Gunawan
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Broadway, NSW 2007, Australia
| | - Rose Amal
- School of Chemical Engineering, University of New South Wales, Kensington, NSW 2052, Australia
| | - Jason A Scott
- School of Chemical Engineering, University of New South Wales, Kensington, NSW 2052, Australia
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6
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Umek P, Dürrschnabel M, Molina-Luna L, Škapin S, Korošec RC, Bittencourt C. The Role of Cerium Valence in the Conversion Temperature of H 2Ti 3O 7 Nanoribbons to TiO 2-B and Anatase Nanoribbons, and Further to Rutile. Molecules 2023; 28:5838. [PMID: 37570808 PMCID: PMC10421187 DOI: 10.3390/molecules28155838] [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: 07/11/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
CeO2-TiO2 is an important mixed oxide due to its catalytic properties, particularly in heterogeneous photocatalysis. This study presents a straightforward method to obtain 1D TiO2 nanostructures decorated with CeO2 nanoparticles at the surface. As the precursor, we used H2Ti3O7 nanoribbons prepared from sodium titanate nanoribbons by ion exchange. Two cerium sources with an oxidation state of +3 and +4 were used to obtain mixed oxides. HAADF-STEM mapping of the Ce4+-modified nanoribbons revealed a thin continuous layer at the surface of the H2Ti3O7 nanoribbons, while Ce3+ cerium ions intercalated partially between the titanate layers. The phase composition and morphology changes were monitored during calcination between 620 °C and 960 °C. Thermal treatment led to the formation of CeO2 nanoparticles on the surface of the TiO2 nanoribbons, whose size increased with the calcination temperature. The use of Ce4+ raised the temperature required for converting H2Ti3O7 to TiO2-B by approximately 200 °C, and the temperature for the formation of anatase. For the Ce3+ batch, the presence of cerium inhibited the conversion to rutile. Analysis of cerium oxidation states revealed the existence of both +4 and +3 in all calcined samples, regardless of the initial cerium oxidation state.
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Affiliation(s)
- Polona Umek
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia;
| | | | - Leopoldo Molina-Luna
- Department of Materials and Earth Sciences, Technische Universität Darmstadt, Peter-Grünberg-Strasse 2, 64287 Darmstadt, Germany;
| | - Srečo Škapin
- Jožef Stefan Institute, Jamova Cesta 39, 1000 Ljubljana, Slovenia;
| | - Romana Cerc Korošec
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna Pot 113, 1000 Ljubljana, Slovenia;
| | - Carla Bittencourt
- Chimie des Interactions Plasma-Surface (ChIPS), Research Institute for Materials Science and Engineering, University of Mons, 7000 Mons, Belgium
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7
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Cheepborisutikul SJ, Ogawa M. Controlled Phase Transformation and Crystal Growth of Titanium Dioxide from Anatase/Silica Core/Shell Particles. Inorg Chem 2023. [PMID: 37463236 DOI: 10.1021/acs.inorgchem.3c01904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Anatase/silica core/shell particles were prepared by the hydrolysis and condensation of tetraethyl orthosilicate on anatase particles with the sizes of 9, 22, and 111 nm, respectively. The thickness of the silica layer was designed from ca. 3 to 14 nm by repeating the coating procedure on anatase with a particle size of 22 nm. By the heat treatment at 1000 °C, though the pristine anatase particles transformed to rutile, anatase remained for the silica-coated particles. Anatase particles (111 nm) transformed to rutile upon heating at 1100 °C, while the transformation was not observed for the smaller particles (9 and 22 nm). With the increase of the silica thickness to 14 nm, anatase did not transform to rutile even after heating at 1150 °C, while resulting in varied compositions of anatase and rutile after heating at 1200 °C. The crystal growth of anatase and rutile was also suppressed for the silica-coated particles compared with that seen for pristine anatase. Thus, the thermal transformation and crystal growth of titania were controlled by the coating with silica, and the effects were shown to affect the coating.
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Affiliation(s)
- Siraphat Jan Cheepborisutikul
- School of Energy 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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8
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Wu LP, Wang WG, Mo D, Duan JL, Li XJ. Effect of Au position on the photoelectrochemical and photocatalytic activity of TiO 2 nanotubes under UV irradiation. INORG NANO-MET CHEM 2023. [DOI: 10.1080/24701556.2023.2166067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Liang-Peng Wu
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, P.R. China
- Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou, P.R. China
| | - Wen-Guang Wang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, P.R. China
| | - Dan Mo
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, P.R. China
| | - Jing-Lai Duan
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, P.R. China
| | - Xin-Jun Li
- Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou, P.R. China
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9
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A Review on Cement-Based Composites for Removal of Organic/Heavy Metal Contaminants from Water. Catalysts 2022. [DOI: 10.3390/catal12111398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Building materials are traditionally known for their mechanical and structural properties. As environmental pollution has risen as a huge global issue, functional building materials with environmental remediation capabilities are the demand for the present time. In this context, cement and concrete with photocatalytic and adsorbent additives were explored for air and water remediation. The usage of functional building materials for self-cleaning and air cleaning is well documented and reviewed in earlier reports. This article gives an overview of the functional building material composites used for water remediation. Numerous different approaches, such as photocatalysis, adsorption, and antimicrobial disinfection, are discussed. Among all, photocatalysis for the degradation of organic compounds and antimicrobial effect has been the most studied method, with TiO2 being the first choice for a photocatalyst. Furthermore, some reports illustrate the impact of photocatalytic filler on hydration and mechanical properties, which is important in case these are used in construction. Adsorption was most preferred for heavy metal removal from the water. This article rationalizes the current status and future scope of cement-based functional composites for water cleaning and discusses their use in water cleaning facilities or regular construction.
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10
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Comparative study of divalent cation sorption on titania nanotubes using Co2+, Ni2+, Zn2+, and Sr2+. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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11
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Li P, Lv Y, Chen X, Li X, Xie J, Zheng J. Ball-milling assisted fabrication of hierarchical Na4Ti5O12/Na2Ti6O13 for enhanced tetracyclines photodegradation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129598] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Baudino L, Santos C, Pirri CF, La Mantia F, Lamberti A. Recent Advances in the Lithium Recovery from Water Resources: From Passive to Electrochemical Methods. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2201380. [PMID: 35896956 PMCID: PMC9507372 DOI: 10.1002/advs.202201380] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/14/2022] [Indexed: 06/15/2023]
Abstract
The ever-increasing amount of batteries used in today's society has led to an increase in the demand of lithium in the last few decades. While mining resources of this element have been steadily exploited and are rapidly depleting, water resources constitute an interesting reservoir just out of reach of current technologies. Several techniques are being explored and novel materials engineered. While evaporation is very time-consuming and has large footprints, ion sieves and supramolecular systems can be suitably tailored and even integrated into membrane and electrochemical techniques. This review gives a comprehensive overview of the available solutions to recover lithium from water resources both by passive and electrically enhanced techniques. Accordingly, this work aims to provide in a single document a rational comparison of outstanding strategies to remove lithium from aqueous sources. To this end, practical figures of merit of both main groups of techniques are provided. An absence of a common experimental protocol and the resulting variability of data and experimental methods are identified. The need for a shared methodology and a common agreement to report performance metrics are underlined.
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Affiliation(s)
- Luisa Baudino
- DISAT Dipartimento di Scienza Applicata e TecnologiaPolitecnico di Torinocorso Duca degli Abruzzi 24Torino10129Italy
- Istituto Italiano di TecnologiaCenter for Sustainable Future TechnologiesVia Livorno 60Torino10144Italy
| | - Cleis Santos
- Energiespeicher‐ und EnergiewandlersystemeUniversität BremenBibliothekstraße 128359BremenGermany
| | - Candido F. Pirri
- DISAT Dipartimento di Scienza Applicata e TecnologiaPolitecnico di Torinocorso Duca degli Abruzzi 24Torino10129Italy
- Istituto Italiano di TecnologiaCenter for Sustainable Future TechnologiesVia Livorno 60Torino10144Italy
| | - Fabio La Mantia
- Energiespeicher‐ und EnergiewandlersystemeUniversität BremenBibliothekstraße 128359BremenGermany
| | - Andrea Lamberti
- DISAT Dipartimento di Scienza Applicata e TecnologiaPolitecnico di Torinocorso Duca degli Abruzzi 24Torino10129Italy
- Istituto Italiano di TecnologiaCenter for Sustainable Future TechnologiesVia Livorno 60Torino10144Italy
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13
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Park H, Han DH, Goto T, Cho S, Morimoto Y, Sekino T. A facile bottom-up method for synthesis of peroxo-potassium titanate nanoribbons and visible light photocatalytic activity derived from a peroxo-titanium bond. NANOSCALE ADVANCES 2022; 4:3573-3584. [PMID: 36134343 PMCID: PMC9400506 DOI: 10.1039/d2na00234e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/16/2022] [Indexed: 06/16/2023]
Abstract
Low-dimensional titanate nanostructures are gaining attention as a promising material for various photocatalytic applications. However, these conventional titanium oxide-based materials cannot utilize visible light because of their wide bandgap, and their synthesis generally requires high-alkali (10 mol L-1) and high-temperature (160-200 °C) conditions. Here, we report facile bottom-up synthesis for the visible light-activated peroxo-titanate nanoribbon (PTNR). The use of the peroxo-titanium complex ion containing the potassium ion as a precursor can induce the formation of a layered potassium titanate structure (K2-x H x Ti2O5) based on the self-organization reaction between titanium complex ions and potassium ions under mild synthetic conditions (0.29-4.39 mol L-1 KOH, 100 °C). Furthermore, the requirement of potassium ions in the formation of layered potassium titanate was stoichiometrically examined. The layered titanate crystals could be grown anisotropically, which depended on the radius of the cation used. Our results newly revealed that the larger radius of the interlayer cation promotes anisotropic crystal growth. As a result, in the case of the potassium base, a nanoribbon structure with a higher aspect ratio and larger specific surface area than those of lithium and sodium bases was formed. The formed peroxo-titanium functional groups significantly reduced the bandgap of titanate to 2.64 eV. In a photocatalytic decolorization test, the PTNR showed excellent photocatalytic performance based on the large surface area and enhanced light absorption in the visible light range while still performing well under UV light. These findings show not only that the proposed synthetic process has a low environmental impact but also that it contributes to the development of highly functionalized materials for photochemical applications.
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Affiliation(s)
- Hyunsu Park
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Do Hyung Han
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Tomoyo Goto
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
- Institute for Advanced Co-Creation Studies, Osaka University 1-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Sunghun Cho
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Yukihiro Morimoto
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
| | - Tohru Sekino
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan
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14
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Paul S, Rahman MA, Sharif SB, Kim JH, Siddiqui SET, Hossain MAM. TiO 2 as an Anode of High-Performance Lithium-Ion Batteries: A Comprehensive Review towards Practical Application. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2034. [PMID: 35745373 PMCID: PMC9228895 DOI: 10.3390/nano12122034] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 12/10/2022]
Abstract
Lithium-ion batteries (LIBs) are undeniably the most promising system for storing electric energy for both portable and stationary devices. A wide range of materials for anodes is being investigated to mitigate the issues with conventional graphite anodes. Among them, TiO2 has attracted extensive focus as an anode candidate due to its green technology, low volume fluctuations (<4%), safety, and durability. In this review, the fabrication of different TiO2 nanostructures along with their electrochemical performance are presented. Different nanostructured TiO2 materials including 0D, 1D, 2D, and 3D are thoroughly discussed as well. More precisely, the breakthroughs and recent developments in different anodic oxidation processes have been explored to identify in detail the effects of anodization parameters on nanostructure morphology. Clear guidelines on the interconnected nature of electrochemical behaviors, nanostructure morphology, and tunable anodic constraints are provided in this review.
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Affiliation(s)
- Sourav Paul
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh; (S.P.); (S.-E.-T.S.); (M.A.M.H.)
| | - Md. Arafat Rahman
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh; (S.P.); (S.-E.-T.S.); (M.A.M.H.)
| | - Sazzad Bin Sharif
- Department of Mechanical Engineering, International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh;
| | - Jin-Hyuk Kim
- Clean Energy R&D Department, Korea Institute of Industrial Technology, 89 Yangdaegiro-gil, Ipjang-myeon, Seobuk-gu, Cheonan-si 31056, Chungcheongnam-do, Korea
| | - Safina-E-Tahura Siddiqui
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh; (S.P.); (S.-E.-T.S.); (M.A.M.H.)
| | - Md. Abu Mowazzem Hossain
- Department of Mechanical Engineering, Chittagong University of Engineering and Technology, Chittagong 4349, Bangladesh; (S.P.); (S.-E.-T.S.); (M.A.M.H.)
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15
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Ruiz-Castillo AL, Hinojosa-Reyes M, Camposeco-Solis R, Ruiz F. Reusability in visible light of titanate nanotubes for the removal of organic pollutants: role of calcination temperature. ENVIRONMENTAL TECHNOLOGY 2022; 43:2081-2098. [PMID: 33332243 DOI: 10.1080/09593330.2020.1866085] [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: 09/07/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
Titanate nanotubes (NTs) were synthesised by the hydrothermal method and later calcined at temperatures between 100-500°C. The calcined NTs were characterised and evaluated in the physicochemical adsorption of the safranin dye and photocatalytic degradation of caffeine. The materials calcined at low temperatures displayed a tubular structure and the H2Ti3O7 crystalline phase, which was transformed into anatase nanoparticles at 400°C. The NTs treated at 100°C showed the highest adsorption capacity (94%). Safranin was adsorbed through an ion-exchange mechanism, following the Langmuir isotherm and a pseudo-second-order kinetic model. While NTs calcined at lower temperatures were better for adsorption, the photocatalytic degradation of caffeine increased in samples calcined at higher temperatures with a maximum removal of 72%. The photocatalytic behaviour of the NT samples confirmed that the crystalline anatase structure in conjunction with structural OH groups enhanced the photocatalytic activity. The addition of isopropanol as a scavenger confirmed the important role played by the •OH radicals in the photocatalytic process. NTs calcined at 300°C were efficient for both adsorption and photocatalytic processes. Due to its efficiency, this sample was reused after dye adsorption for the photocatalytic degradation of caffeine under visible light due to its enhanced absorbance in the visible region. This research work shows the potential of NTs for wastewater purification.
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Affiliation(s)
| | | | - Roberto Camposeco-Solis
- Instituto de Ciencias Aplicadas y Tecnología, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Facundo Ruiz
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
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16
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Abstract
Nanostructured titanium compounds have recently been applied in the design of gas sensors. Among titanium compounds, titanium oxides (TiO2) are the most frequently used in gas sensing devices. Therefore, in this review, we are paying significant attention to the variety of allotropic modifications of titanium oxides, which include anatase, rutile, brukite. Very recently, the applicability of non-stoichiometric titanium oxide (TiO2−x)-based layers for the design of gas sensors was demonstrated. For this reason, in this review, we are addressing some research related to the formation of non-stoichiometric titanium oxide (TiO2−x) and Magnéli phase (TinO2n−1)-based layers suitable for sensor design. The most promising titanium compounds and hetero- and nano-structures based on these compounds are discussed. It is also outlined that during the past decade, many new strategies for the synthesis of TiO2 and conducting polymer-based composite materials were developed, which have found some specific application areas. Therefore, in this review, we are highlighting how specific formation methods, which can be used for the formation of TiO2 and conducting polymer composites, can be applied to tune composite characteristics that are leading towards advanced applications in these specific technological fields. The possibility to tune the sensitivity and selectivity of titanium compound-based sensing layers is addressed. In this review, some other recent reviews related to the development of sensors based on titanium oxides are overviewed. Some designs of titanium-based nanomaterials used for the development of sensors are outlined.
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17
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Kaushik R, Singh PK, Halder A. Modulation strategies in titania photocatalyst for energy recovery and environmental remediation. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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18
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Fitzpatrick JR, Costa SIR, Tapia-Ruiz N. Sodium-Ion Batteries: Current Understanding of the Sodium Storage Mechanism in Hard Carbons : Optimising properties to speed commercialisation. JOHNSON MATTHEY TECHNOLOGY REVIEW 2022. [DOI: 10.1595/205651322x16250408525547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In recent years, sodium-ion batteries (NIBs) have been explored as an alternative technology to lithium-ion batteries (LIBs) due to their cost-effectiveness and promise in mitigating the energy crisis we currently face. Similarities between both battery systems have enabled fast development
of NIBs, however, their full commercialisation has been delayed due to the lack of an appropriate anode material. Hard carbons (HCs) arise as one of the most promising materials and are already used in the first generation of commercial NIBs. Although promising, HCs exhibit lower performance
compared to commercial graphite used as an anode in LIBs in terms of reversible specific capacity, operating voltage, initial coulombic efficiency and cycling stability. Nevertheless, these properties vary greatly depending on the HC in question, for example surface area, porosity, degree
of graphitisation and defect amount, which in turn are dependent on the synthesis method and precursor used. Optimisation of these properties will bring forward the widespread commercialisation of NIBs at a competitive level with current LIBs. This review aims to provide a brief overview of
the current understanding of the underlying reaction mechanisms occurring in the state-of-the-art HC anode material as well as their structure-property interdependence. We expect to bring new insights into the engineering of HC materials to achieve optimal, or at least, comparable electrochemical
performance to that of graphite in LIBs.
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Affiliation(s)
| | - Sara I. R. Costa
- Department of Chemistry, Lancaster University Lancaster LA1 4YB UK
| | - Nuria Tapia-Ruiz
- Department of Chemistry, Lancaster University Lancaster LA1 4YB UK
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Liu F, Zhang S, Zhang X, Shen J, Wan L, Bahi A, Ko F. Synergy of surface sodium and hydroxyl on NaTi 2HO 5 nanotubes accelerating the Pt-dominated ambient HCHO oxidation. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126769. [PMID: 34388924 DOI: 10.1016/j.jhazmat.2021.126769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/01/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Surface hydroxyl is widely perceived as conducive to HCHO degradation. Here, a kind of sodium titanate with interlayered hydroxyls (NaTi2HO5) was prepared to study the action conditions of surface hydroxyls in HCHO oxidation. The nanotubes mainly exposing (001) and nanobelts mainly exposing (100) are synthesized as the two morphologies of NaTi2HO5. We found the (001) facet is much more favored to HCHO adsorption via HRTEM and XPS analysis. The DFT calculations prove that the synergy of surface hydroxyl and Na atom is perfect for HCHO chemisorption. By this means NaTi2HO5 nanotubes can partially oxidize HCHO into formate and release very few CO, measured by in situ DRIFTS. Dominated by Pt nanoparticles, the complete oxidation of HCHO can be performed on NaTi2HO5 nanotubes with enhanced early reaction speed. Rather than simple surface hydroxyl, the effective synergy of hydroxyl and positive ion is proposed as an advantage for HCHO oxidation.
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Affiliation(s)
- Fang Liu
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, PR China; School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, PR China
| | - Shiying Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, PR China.
| | - Xiangchao Zhang
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, PR China
| | - Jie Shen
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha 410022, PR China
| | - Long Wan
- College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Addie Bahi
- Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Frank Ko
- Department of Materials Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
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Djellabi R, Ordonez MF, Conte F, Falletta E, Bianchi CL, Rossetti I. A review of advances in multifunctional XTiO 3 perovskite-type oxides as piezo-photocatalysts for environmental remediation and energy production. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126792. [PMID: 34396965 DOI: 10.1016/j.jhazmat.2021.126792] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 07/19/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Over more than three decades, the field of engineering of photocatalytic materials with unique properties and enhanced performance has received a huge attention. In this regard, different classes of materials were fabricated and used for different photocatalytic applications. Among these materials, recently multifunctional XTiO3 perovskites have drawn outstanding interest towards environmental remediation and energy conversion thanks to their unique structural, optical, physiochemical, electrical and thermal characteristics. XTiO3 perovskites are able to initiate different surface catalytic reactions. Under ultrasonic vibration or heating, XTiO3 perovskites can induce piezo-catalytic reactions due to the titling of their conduction and valence bands, resulting in the formation of separated charge carriers in the medium. In addition, under light irradiation, XTiO3 perovskites are considered as a new class of photocatalysts for environmental and energy related applications. Herein, we addressed the recent advances on variously synthesized, doped and formulated XTiO3 perovskite-type oxides showing piezo- and/or photocatalytic exploitation in environmental remediation and energy conversion. The control of structural crystallite size and phase, conductivity, morphology, oxygen vacancy control, doping agents and ratio has a significant role on the photocatalytic and piezocatalytic activities. The different piezo or/and photocatalytic processes mechanistic pathways towards varying applications were discussed. The current challenges facing these materials and future trends were addressed at the end of the review.
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Affiliation(s)
- Ridha Djellabi
- Department of Chemistry, Università degli Studi di Milano, and INSTM Unit Milano-Università, Via Golgi 19, 20133 Milano, Italy
| | - Marcela Frias Ordonez
- Department of Chemistry, Università degli Studi di Milano, and INSTM Unit Milano-Università, Via Golgi 19, 20133 Milano, Italy
| | - Francesco Conte
- Department of Chemistry, Università degli Studi di Milano, INSTM Unit Milano-Università, and CNR-SCITEC, via Golgi 19, 20133 Milano, Italy
| | - Ermelinda Falletta
- Department of Chemistry, Università degli Studi di Milano, and INSTM Unit Milano-Università, Via Golgi 19, 20133 Milano, Italy
| | - Claudia L Bianchi
- Department of Chemistry, Università degli Studi di Milano, and INSTM Unit Milano-Università, Via Golgi 19, 20133 Milano, Italy.
| | - Ilenia Rossetti
- Department of Chemistry, Università degli Studi di Milano, INSTM Unit Milano-Università, and CNR-SCITEC, via Golgi 19, 20133 Milano, Italy
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21
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Maurizi L, Bellat V, Moreau M, De Maistre E, Boudon J, Dumont L, Denat F, Vandroux D, Millot N. Titanate nanoribbon-based nanobiohybrid for potential applications in regenerative medicine. RSC Adv 2022; 12:26875-26881. [PMID: 36320832 PMCID: PMC9490774 DOI: 10.1039/d2ra04753e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/14/2022] [Indexed: 11/26/2022] Open
Abstract
Nanoparticles capable of mimicking natural tissues represent a major technological advancement in regenerative medicine. In this pilot study, the development of a new nanohybrid composed of titanate nanoribbons to mimic the extracellular matrix is reported. During the first phase, nanoribbons were synthesized by hydrothermal treatment. Subsequently, titanate nanoribbons were functionalized by heterobifunctional polyethylene-glycol (PEG) to graft type I collagen on their surface. Biological properties of this new nanobiohybrid such as cytotoxicity to cardiac cells and platelet aggregation ability were evaluated. The so-formed nanobiohybrid permits cellular adhesion and proliferation favoring fine cardiac tissue healing and regeneration. Titanate nanoribbons functionalized by heterobifunctional polymer and type I collagen for cellular adhesion and proliferation. This new nanobiohybrid affected neither cytotoxicity nor platelet aggregation ability.![]()
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Affiliation(s)
- Lionel Maurizi
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
| | - Vanessa Bellat
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
- Société NVH Medicinal, Dijon, France
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, 413 E 69th Street, New York, NY, 10021, USA
| | - Mathieu Moreau
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
| | | | - Julien Boudon
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
| | | | - Franck Denat
- Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR 6302 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
| | | | - Nadine Millot
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, 21078 Dijon, France
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22
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Modification of Glass/Polyester Laminates with Flame Retardants. MATERIALS 2021; 14:ma14247901. [PMID: 34947505 PMCID: PMC8706711 DOI: 10.3390/ma14247901] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/08/2021] [Accepted: 12/16/2021] [Indexed: 11/28/2022]
Abstract
This paper presents a review of flame retardants used for glass/polyester laminates. It concerns flame retardants withdrawn from use such as compounds containing halogen atoms and flame retardants currently used in the industry, such as inorganic hydroxides, phosphorus and nitrogen-containing compounds, antimony, and boron compounds, as well as tin–zinc compounds. Attention is also drawn to the use of nanoclays and the production of nanocomposites, intumescent flame retardant systems, and mats, as well as polyhedral oligomeric silsesquioxanes. The paper discusses the action mechanism of particular flame retardants and presents their advantages and disadvantages.
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23
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Lin CH, Chen WH. Graphene Family Nanomaterials (GFN)-TiO 2 for the Photocatalytic Removal of Water and Air Pollutants: Synthesis, Characterization, and Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3195. [PMID: 34947544 PMCID: PMC8705732 DOI: 10.3390/nano11123195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/19/2021] [Accepted: 11/21/2021] [Indexed: 01/12/2023]
Abstract
Given the industrial revolutions and resource scarcity, the development of green technologies which aims to conserve resources and reduce the negative impacts of technology on the environment has become a critical issue of concern. One example is heterogeneous photocatalytic degradation. Titanium dioxide (TiO2) has been intensively researched given its low toxicity and photocatalytic effects under ultraviolet (UV) light irradiation. The advantages conferred by the physical and electrochemical properties of graphene family nanomaterials (GFN) have contributed to the combination of GFN and TiO2 as well as the current variety of GFN-TiO2 catalysts that have exhibited improved characteristics such as greater electron transfer and narrower bandgaps for more potential applications, including those under visible light irradiation. In this review, points of view on the intrinsic properties of TiO2, GFNs (pristine graphene, graphene oxide (GO), reduced GO, and graphene quantum dots (GQDs)), and GFN-TiO2 are presented. This review also explains practical synthesis techniques along with perspective characteristics of these TiO2- and/or graphene-based materials. The enhancement of the photocatalytic activity by using GFN-TiO2 and its improved photocatalytic reactions for the treatment of organic, inorganic, and biological pollutants in water and air phases are reported. It is expected that this review can provide insights into the key to optimizing the photocatalytic activity of GFN-TiO2 and possible directions for future development in these fields.
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Affiliation(s)
- Chih-Hsien Lin
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
| | - Wei-Hsiang Chen
- Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
- Aerosol Science and Research Center, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Department of Public Health, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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24
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Bae J, Kim M, Kang H, Kim T, Choi H, Kim B, Do HW, Shim W. Kinetic 2D Crystals via Topochemical Approach. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006043. [PMID: 34013602 DOI: 10.1002/adma.202006043] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/06/2020] [Indexed: 06/12/2023]
Abstract
The designing of novel materials is a fascinating and innovative pathway in materials science. Particularly, novel layered compounds have tremendous influence in various research fields. Advanced fundamental studies covering various aspects, including reactants and synthetic methods, are required to obtain novel layered materials with unique physical and chemical properties. Among the promising synthetic techniques, topochemical approaches have afforded the platform for widening the extent of novel 2D materials. Notably, the synthesis of binary layered materials is considered as a major scientific breakthrough after the synthesis of graphene as they exhibit a wide spectrum of material properties with varied potential applicability. In this review, a comprehensive overview of the progress in the development of metastable layered compounds is presented. The various metastable layered compounds synthesized from layered ternary bulk materials through topochemical approaches are listed, followed by the descriptions of their mechanisms, structural analyses, characterizations, and potential applications. Finally, an essential research direction concerning the synthesis of new materials is indicated, wherein the possible application of topochemical approaches in unprecedented areas is explored.
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Affiliation(s)
- Jihong Bae
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Minjung Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Hyeonsoo Kang
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Taeyoung Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Hong Choi
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Bokyeong Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Hyung Wan Do
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
| | - Wooyoung Shim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 120-749, South Korea
- Center for Multi-Dimensional Materials, Yonsei University, Seoul, 03722, South Korea
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25
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Li H, Huang Y, Liu J, Duan H. Hydrothermally synthesized titanate nanomaterials for the removal of heavy metals and radionuclides from water: A review. CHEMOSPHERE 2021; 282:131046. [PMID: 34102493 DOI: 10.1016/j.chemosphere.2021.131046] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
Hazardous heavy metals and radionuclides in water and wastewater are of drastic concern owing to their detrimental impacts on the organisms as well as the circumambient ecosystem. To remove them as much as we can, both technique and materials were studied in the past years. The adsorption technique as superior water remediation method with the simplicity of design, environmental friendliness and high efficiency was well established. Consequently, it is practically important to explore advanced and economically feasible absorbents for removing these poisonous pollutants from aqueous solutions. So far, large numbers of experiments proved hydrothermally synthesized titanate nanomaterials (TNMs) could be a prospectively excellent adsorbent extracting heavy metals and radionuclides from water due to the high specific surface area, tunable pore size, abundant surface active sites, favorable hydrophilic properties. The objective of this work is to give an overview of hydrothermal synthesis, adsorption performance of TNMs for heavy metals and radionuclides, as well as the various influencing factors for water purification. It comprehensively reviews the structural changes and regenerability of TNMs after adsorption, and different modification methods adopted for improving removal capacity. Additionally, it uniquely highlights the efficient decontamination of the pollutants through a synergistic effect of adsorption and photocatalysis by TNMs. This review provides detailed information for the development, application, and research challenges faced by hydrothermally synthesized TNMs for the removal of heavy metals and radionuclides from aqueous solutions, which will serve as a reference guide for scientists in related fields.
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Affiliation(s)
- Hanyu Li
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Yi Huang
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Geosciences, Chengdu University of Technology, China.
| | - Jianing Liu
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Haoran Duan
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
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26
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Adeleye AT, John KI, Adeleye PG, Akande AA, Banjoko OO. One-dimensional titanate nanotube materials: heterogeneous solid catalysts for sustainable synthesis of biofuel precursors/value-added chemicals-a review. JOURNAL OF MATERIALS SCIENCE 2021; 56:18391-18416. [PMID: 34511639 PMCID: PMC8418895 DOI: 10.1007/s10853-021-06473-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
One-dimensional (1D) titanate nanotubes materials (protonated titanate nanotube (HTNT) and sodium titanate nanotube (NaTNT)) have been reported as low-cost and efficient catalytic materials in chemical syntheses for the production of biofuel precursors with interesting catalytic performance exhibited, even better than some commonly used zeolites, H-MOR, H-β, SO4 2-/Al2O3, and H-ZSM-5 solid catalysts with environmental benign in focus when compared with homogeneous catalytic materials. This mini-review expressly revealed the significance and potential of using HTNT and NaTNT as sustainable and environmentally benign solid catalysts/supports in various chemical reactions. The critical assessment of biomass valorization and titanate nanostructured materials as catalysts/supports via Green Chemistry approach, #7 (use of renewable feedstocks), #9 (use of catalyst against stoichiometry) and United Nations (UN) Sustainable Development Goals (SDGs), #7 (affordable and clean energy; ensure access to inexpensive, reliable, sustainable, and new energy), is presented as integrated pathways to meet environmental benign technology toward sustainability. Hence, this work follows in the pattern of recent formulated features reported for solid catalysts-'PYSSVR' concept, which means P-production cost, Y-yield, S-stability, S-selectivity, V-versatility, and R-reusability. GRAPHICAL ABSTRACT
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Affiliation(s)
- Aderemi Timothy Adeleye
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049 China
- Organization of African Academic Doctor (OAAD), Off Kamiti Road, P. O. Box 25305000100, Nairobi, Kenya
| | - Kingsley I. John
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 China
- University of Chinese Academy of Sciences, 19 A Yuquan Road, Shijingshan District, Beijing, 100049 China
- Organization of African Academic Doctor (OAAD), Off Kamiti Road, P. O. Box 25305000100, Nairobi, Kenya
- Lab of Department of Pure and Applied Chemistry, College of Natural Sciences, Veritas University Abuja, PMB 5171, Abuja, Nigeria
| | | | - Amos Adeleke Akande
- CSIR NextGen Enterprises and Institutions Cluster, EDT4IR Research Centre, P O Box 395, Pretoria, 0001 South Africa
- Department of Physics, University of Limpopo, P/Bag X1106, Sovenga, 0727 South Africa
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Rodríguez-González V, Sasaki M, Ishii J, Khan S, Terashima C, Suzuki N, Fujishima A. Indoor gas phase photoactivity of yttrium modified titanate films for fast acetaldehyde oxidation. CHEMOSPHERE 2021; 275:129992. [PMID: 33662721 DOI: 10.1016/j.chemosphere.2021.129992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 02/01/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Photoactive materials hold structural and catalytic features that make them particularly suitable for environmental applications and in the present work, protonated H3Ti3O7-Y nanofiber-like materials were prepared via the microwave assisted hydrothermal technique. The as-prepared nanofibers exhibited high surface area with titanate structure. The nanofibers, before and after yttrium incorporation, were well-distributed and the fibrous morphology could be observed clearly; as the yttrium loading increased, ribbons and the anatase phase were formed. Practical films of these nanofibers confirmed their likely UV-photoactive properties with 200 ppm of acetaldehyde degradation within 25 min in the presence of 50% of humidity. Activity retention was achieved, keeping stability for 2 consecutive cycles at room temperature. Nowadays, the increase in home office work sets human health at risk, for the exposure to toxic volatile organic compounds and microorganisms such as viruses and bacteria is more frequent indoors. In this context, the synthesized photoactive yttrium-titanate films stand as upcoming practical UV-driven materials for cleaning pollution that concentrated urban activity and indoor environments.
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Affiliation(s)
- Vicente Rodríguez-González
- Instituto Potosino de Investigación Científica y Tecnológica (IPICyT), División de Materiales Avanzados, Camino a La Presa San José 2055, Lomas 4a. Sección 78216, San Luis Potosí, Mexico; Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
| | - Mao Sasaki
- Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
| | - Junki Ishii
- Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
| | - Sovann Khan
- Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
| | - Chiaki Terashima
- Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan; Research Center for Space Colony, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, 278-8510, Japan; Research Initiative for Supra-Materials, Shinshu University, Wakasato, Nagano, 380-8553, Japan.
| | - Norihiro Suzuki
- Photocatalysis International Research Center, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, 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, Research Institute for Science & Technology, And Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
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Omar AMA, Hassen A, Metwalli OI, Saber MR, Mohamed SRE, Khalil ASG. Construction of 2D layered TiO 2@MoS 2heterostructure for efficient adsorption and photodegradation of organic dyes. NANOTECHNOLOGY 2021; 32:335605. [PMID: 33971641 DOI: 10.1088/1361-6528/abff8a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
In this work, heterostructures of coupled TiO2@MoS2with different phases of MoS2were synthesized via hydrothermal technique. The prepared materials were thoroughly characterized using various techniques, including XRD, SEM, transmission electron microscopy, Brunauer-Emmet-Teller, XPS, Zeta potential and UV-vis spectroscopy. The optimized nanocomposites were tested for the photocatalytic degradation of methyl Orange (MO) under visible light as well as the adsorption of Rhodamine b (RhB) and methelene blue (MB) dyes. The TiO2@1T/2H-MoS2heterostructures exhibited a narrow bandgap compared to the other studied nanomaterials. A remarkable photodegradation efficiency of TiO2@1T/2H-MoS2was observed, which completely degraded 20 ppm of MO after 60 min with high stability over four successive cycles. This can be assigned to the formation of unique heterostructures with aligned energy bands between MoS2nanosheets and TiO2nanobelts. The formation of these novel interfaces promoted the electron transfer and increased the separation efficiency of carriers, resulting in high photocatalytic degradation. Furthermore, the adsorption efficiency of TiO2@1T/2H-MoS2was unique, 20 ppm solutions of RhB and MB were removed after 1 and 2 min, respectively. The superior adsorption performance of the TiO2@1T/2H-MoS2can be attributed to its high surface area (279.9 m2g-1) and the rich concentration of active sites. The kinetics and the isothermal analysis revealed that the TiO2@1T/2H MoS2heterstructures have maximum adsorption capacity of 1200 and 970 mg g-1for RhB and MB, respectively. This study provides a powerful way for designing an effective photocatalyst and adsorbent TiO2-based nanocomposites for water remediation.
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Affiliation(s)
- Asmaa M A Omar
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Arafa Hassen
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Ossama I Metwalli
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Mohamed R Saber
- Chemistry Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Sayed R E Mohamed
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
| | - Ahmed S G Khalil
- Physics Department, Faculty of Science, Fayoum University, 63514 Fayoum, Egypt
- Materials Science & Engineering Department, School of Innovative Design Engineering, Egypt-Japan University of Science and Technology (E-JUST), 179 New Borg El-Arab City, Egypt
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Kondo Y, Goto T, Sekino T. Sr 2+ sorption property of seaweed-like sodium titanate mats: effects of crystallographic properties. RSC Adv 2021; 11:18676-18684. [PMID: 35480944 PMCID: PMC9033459 DOI: 10.1039/d1ra03088d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 05/11/2021] [Indexed: 11/25/2022] Open
Abstract
Layered sodium titanate is a typical ion-exchanger for water purification aimed at removing cationic heavy metals and radionuclides. The material design of an ion-exchanger is effective for cation removal. For that purpose, understanding the basic impacts of crystallographic properties such as crystal size, morphology, and phase is critical for developing highly functional nanoscale ion-exchangers. In this study, we investigate the principal relationship between the crystallographic properties of seaweed-like sodium titanate mats (SSTs), which consist of a dititanate (HxNa2−xTi2O5) phase of nanofibers synthesised by the alkaline hydrothermal method and their Sr2+ sorption mechanism. A trititanate (HxNa2−xTi3O7) phase, which has a micro-sized fibre morphology, was also synthesised using the same method by adjusting the NaOH concentration. The SST demonstrates a high ion-exchange selectivity of Sr2+ against H+ and a high maximum sorption capacity (2 mmol g−1), which was four times higher than that of the trititanate phase (0.49 mmol g−1). In contrast, the trititanate phase, which is the comparison target, had a low Sr2+ ion-exchange selectivity and precipitated SrCO3. We conclude that these differences in Sr2+ sorption mechanisms were derived from not only the unique morphology but also the crystal structure of sodium titanates. Although almost all of the Na+ in dititanate with lamellar structure was consumed by the ion-exchange reaction, some Na+ remained in the trititanate because there are two sites in the zigzag layered structure. These findings on the crystallographic properties of SST for Sr2+ sorption may contribute to the functionalisation of a nanoscale ion-exchanger. Seaweed-like sodium titanate mats (SSTs) have excellent sorption capacity of Sr2+ compared to sodium trititanate monodispersed nanofibers due to the sodium dititanate structure and its unique nano/micro-scale morphologies.![]()
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Affiliation(s)
- Yoshifumi Kondo
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436.,Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University 2-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Tomoyo Goto
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436.,Institute for Advanced Co-Creation Studies, Osaka University 1-1 Yamadaoka Suita Osaka 565-0871 Japan
| | - Tohru Sekino
- The Institute of Scientific and Industrial Research (ISIR-SANKEN), Osaka University 8-1 Mihogaoka Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436
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Xu L, Pan C, Li S, Yin C, Zhu J, Pan Y, Feng Q. Electrostatic Self-Assembly Synthesis of Three-Dimensional Mesoporous Lepidocrocite-Type Layered Sodium Titanate as a Superior Adsorbent for Selective Removal of Cationic Dyes via an Ion-Exchange Mechanism. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6080-6095. [PMID: 33969686 DOI: 10.1021/acs.langmuir.1c00913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Three-dimensional mesoporous lepidocrocite-type layered sodium titanate (LST) was constructed at room temperature by the electrostatic interaction between Ti1-δO24δ- nanosheets and Na+ ions. The results of a systematic X-ray diffraction investigation manifested the transition from the Ti1-δO24δ- nanosheets phase to the titanate/titania phase, which determined a phase diagram as a function of the temperature and NaCl concentration. In addition, scanning electron microscopy, inductively coupled plasma-mass spectrometry, thermogravimetric and differential thermal, N2 adsorption-desorption, Raman spectroscopy, Fourier transform infrared spectroscopy, as well as ζ-potential analyses were utilized for adequate characterization of the LST physical and chemical properties. Furthermore, batch adsorption experiments demonstrated that LST had superior adsorption property and adsorption selectivity toward cationic dyes compared to those of anionic dyes. A multifarious influencing effect on the cationic dye adsorption behavior during the adsorption process was systematically investigated. Moreover, the pseudo-second-order kinetic model felicitously depicted the cationic dye adsorption behavior through an elaborate kinetic study, namely, chemisorption was the main adsorption action. Meanwhile, different adsorption isotherm models were utilized to process the experimental data, uncovering that the adsorption isotherms of cationic dyes on LST were suitable for a Langmuir isothermal model. More importantly, an ion-exchange mechanism was proposed for the cationic dye adsorption on LST, and the ion-exchange reaction occurred with a stoichiometric exchange between 1 mol of Na+ ions in the LST interlayer and 1 mol of MB molecules in the solution. In parallel, the electrochemical impedance spectroscopy and cyclic voltammogram measurements verified that the high ionic conductivity of Na+ ions in the LST interlayer resulted in a superior adsorption property. A two-step acid-base procedure was ultimately adopted to effectively regenerate LST adsorbent. This work provides not only an alternative adsorbent with superior adsorption capacity and adsorption selectivity but also some guiding significance for research on the adsorption mechanism of layered titanates.
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Affiliation(s)
- Linfeng Xu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui 232001, China
- Department of Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan
| | - Chengling Pan
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Sen Li
- Department of Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan
| | - Chengjie Yin
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Jinbo Zhu
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Yusong Pan
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Qi Feng
- Department of Advanced Materials Science, Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu 761-0396, Japan
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31
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Sarkar AN, Singha K, Panda AB, Pal S. In-situ deposited CdS NPs on pH induced fully exfoliated layered titanate-biopolymeric composite and its photocatalytic activity. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123791] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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ZnO nucleation into trititanate nanotubes by ALD equipment techniques, a new way to functionalize layered metal oxides. Sci Rep 2021; 11:7698. [PMID: 33833249 PMCID: PMC8032785 DOI: 10.1038/s41598-021-86722-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 03/16/2021] [Indexed: 12/13/2022] Open
Abstract
In this contribution, we explore the potential of atomic layer deposition (ALD) techniques for developing new semiconductor metal oxide composites. Specifically, we investigate the functionalization of multi-wall trititanate nanotubes, H2Ti3O7 NTs (sample T1) with zinc oxide employing two different ALD approaches: vapor phase metalation (VPM) using diethylzinc (Zn(C2H5)2, DEZ) as a unique ALD precursor, and multiple pulsed vapor phase infiltration (MPI) using DEZ and water as precursors. We obtained two different types of tubular H2Ti3O7 species containing ZnO in their structures. Multi-wall trititanate nanotubes with ZnO intercalated inside the tube wall sheets were the main products from the VPM infiltration (sample T2). On the other hand, MPI (sample T3) principally leads to single-wall nanotubes with a ZnO hierarchical bi-modal functionalization, thin film coating, and surface decorated with ZnO particles. The products were mainly characterized by electron microscopy, energy dispersive X-ray, powder X-ray diffraction, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. An initial evaluation of the optical characteristics of the products demonstrated that they behaved as semiconductors. The IR study revealed the role of water, endogenous and/or exogenous, in determining the structure and properties of the products. The results confirm that ALD is a versatile tool, promising for developing tailor-made semiconductor materials.
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New photoactive mesoporous Ce-modified TiO2 for simultaneous wastewater treatment and electric power generation. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.09.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Kamal N, Zaki AH, El-Shahawy AA, Sayed OM, El-Dek SI. Changing the morphology of one-dimensional titanate nanostructures affects its tissue distribution and toxicity. Toxicol Ind Health 2021; 36:272-286. [PMID: 32552542 DOI: 10.1177/0748233720921693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present research investigated the impact of the morphology change of titanate (TiO2) nanostructures on its tissue distribution and toxicity. The TiO2 nanotubes, rods, and ribbons were synthesized by the hydrothermal technique, and the morphology was adjusted by alteration of the hydrothermal duration time. The characterization techniques were X-ray diffraction, high-resolution transmission electron microscopy, dynamic light scattering, and the Brunauer-Emmett-Teller method for measuring the surface area. The intravenously administrated dose (5 mg/kg) was injected as a single dose for 1 day and consecutively for 42 days. The quantitative analysis of accumulated TiO2 nanostructures in the liver, spleen, and the heart was performed using an inductively coupled plasma emission spectrometer, and the organs' toxicity was estimated by histopathological analysis. The prepared nanostructures exhibited differences in morphology, crystallinity, size distribution, surface area, zeta potential, and aspect ratio. The results revealed a tissue distribution difference between the liver, spleen, and heart of these nanostructures, the distribution order was the liver, spleen, and the heart for all TiO2 nanostructures. The toxicity was induced with different degrees. The nanotubes were the most harmful among the three formats. In summary, changes in the morphology of the TiO2 nanostructures change its distribution and toxicity.
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Affiliation(s)
- Nahla Kamal
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - A H Zaki
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed Ag El-Shahawy
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Ossama M Sayed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni Suef University, Beni-Suef, Egypt
| | - S I El-Dek
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni Suef University, Beni-Suef, Egypt
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Cai J, Li S. Photocatalytic Treatment of Environmental Pollutants using Multilevel- Structure TiO2-based Organic and Inorganic Nanocomposites. CURRENT ORGANOCATALYSIS 2020. [DOI: 10.2174/2213337207999200701214637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nanostructured materials often exhibit unique physical properties, such as fast carrier
transport, subwavelength optical waveguiding, and a high surface-area-to-volume ratio. When the size
of a material is reduced to nanoscale dimensions, its physical and chemical properties can change dramatically.
In addition, nanostructures offer exciting new opportunities for environmental applications.
In this review, we aim to provide an up-to-date summary of recent research related to multifunctional
TiO2-based inorganic and organic semiconductor nanomaterials, covering both their synthesis and applications.
After a brief introduction of the definition and classification of TiO2-based inorganic and
organic semiconductor nanomaterial structures, we discuss various application strategies, such as sewage
treatment, heavy metal removal, and the oxidation of alcohols to the corresponding aldehydes. In
our previous work, we fabricated a variety of TiO2-based hollow spheres using a diverse range of materials
from inorganic semiconductors to organic semiconductors and applied these structures as photocatalysts.
Further, the development of these nanostructures may enable numerous applications in the
field of environmental technology.
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Affiliation(s)
- Jiabai Cai
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China
| | - Shunxing Li
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou, 363000, China
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Ramanavicius S, Ramanavicius A. Insights in the Application of Stoichiometric and Non-Stoichiometric Titanium Oxides for the Design of Sensors for the Determination of Gases and VOCs (TiO 2-x and Ti nO 2n-1 vs. TiO 2). SENSORS (BASEL, SWITZERLAND) 2020; 20:E6833. [PMID: 33260465 PMCID: PMC7730008 DOI: 10.3390/s20236833] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 11/18/2022]
Abstract
In this review article, attention is paid towards the formation of various nanostructured stoichiometric titanium dioxide (TiO2), non-stoichiometric titanium oxide (TiO2-x) and Magnéli phase (TinO2n-1)-based layers, which are suitable for the application in gas and volatile organic compound (VOC) sensors. Some aspects related to variation of sensitivity and selectivity of titanium oxide-based sensors are critically overviewed and discussed. The most promising titanium oxide-based hetero- and nano-structures are outlined. Recent research and many recently available reviews on TiO2-based sensors and some TiO2 synthesis methods are discussed. Some promising directions for the development of TiO2-based sensors, especially those that are capable to operate at relatively low temperatures, are outlined. The applicability of non-stoichiometric titanium oxides in the development of gas and VOC sensors is foreseen and transitions between various titanium oxide states are discussed. The presence of non-stoichiometric titanium oxide and Magnéli phase (TinO2n-1)-based layers in 'self-heating' sensors is predicted, and the advantages and limitations of 'self-heating' gas and VOC sensors, based on TiO2 and TiO2-x/TiO2 heterostructures, are discussed.
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Affiliation(s)
- Simonas Ramanavicius
- Department of Electrochemical Material Science, State Research Institute Center for Physical Sciences and Technology (FTMC), Sauletekio av. 3, LT-10257 Vilnius, Lithuania;
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
| | - Arunas Ramanavicius
- Department of Physical Chemistry, Faculty of Chemistry and Geosciences, Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
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Ameur N, Brahimi FT, Bensaada N, Gouhas H, Ferouani G. Enhanced Photocatalytic Degradation of Organic Pollutants and Anticorrosion of Mild Steel by Vanadium Modified Titanate Nanotubes (X%V‐TiNTs). ChemistrySelect 2020. [DOI: 10.1002/slct.202003713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nawal Ameur
- Laboratory of Catalysis and Synthesis in Organic Chemistry (LCSCO) University of Tlemcen BP 119 Imama 13000 Tlemcen Algeria
- Higher School of Electrical and Energetic Engineering of Oran (ESGEE) BP 64 CH2 Achaba Hanifi USTO 31000 Oran Algeria
| | - Fawzia Taieb Brahimi
- Higher School of Electrical and Energetic Engineering of Oran (ESGEE) BP 64 CH2 Achaba Hanifi USTO 31000 Oran Algeria
- Laboratory of Electrical Engineering and Materials (LGEM) Oran Algeria
| | - Naima Bensaada
- Higher School of Electrical and Energetic Engineering of Oran (ESGEE) BP 64 CH2 Achaba Hanifi USTO 31000 Oran Algeria
- Laboratory of Electrical Engineering and Materials (LGEM) Oran Algeria
| | - Halima Gouhas
- Higher School of Electrical and Energetic Engineering of Oran (ESGEE) BP 64 CH2 Achaba Hanifi USTO 31000 Oran Algeria
- Laboratory of Electrical Engineering and Materials (LGEM) Oran Algeria
| | - Ghaniya Ferouani
- Laboratory of Catalysis and Synthesis in Organic Chemistry (LCSCO) University of Tlemcen BP 119 Imama 13000 Tlemcen Algeria
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Kondo Y, Goto T, Sekino T. Sorption capacity of seaweed-like sodium titanate mats for Co 2+ removal. RSC Adv 2020; 10:41032-41040. [PMID: 35519197 PMCID: PMC9057711 DOI: 10.1039/d0ra06662a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Accepted: 10/24/2020] [Indexed: 11/21/2022] Open
Abstract
The development of new technologies for securing and recycling water resources are in high demand. A key focus of these technologies is the development of various ion exchangers or adsorbents that are used for the purification of aqueous solutions. Layered sodium titanate is one of the cation exchangers utilised in the removal of heavy metals and radionuclides from wastewater. To enhance the removal efficiency, the precise design of the crystal morphology, structure, and chemical composition is important. Herein, we synthesised a unique seaweed-like sodium titanate mat (SST) using a template-free alkaline hydrothermal process. The Co2+ sorption capacity of SST was investigated by batch testing with cobalt(ii) nitrate. SST, which was synthesised from titanium sulphate in a 10 M NaOH solution at 200 °C, had a seaweed-like structure composed of randomly distributed nanofibres of layered sodium titanate that is approximately 9 nm in diameter. The crystal shape changed from roundish crystals to fibrous crystals as the hydrothermal reaction period increased. The Co2+ sorption isotherm of SST was fitted with the Langmuir isotherm model and the maximum sorption density was 1.85 mmol g−1. The selectivity of the Co2+ sorption on SST was high in comparison to that of Ca2+ and Mg2+. Herein, the Co2+ sorption mechanisms of SST were studied in comparison with commercially available sodium titanate. Results show that controlling the crystal morphology, structure, and Na concentration of the layered titanate that can be ion-exchanged determines the cation sorption properties of sodium titanate. The seaweed-like sodium titanate mat has a high Co2+ sorption capacity via the ion-exchange reaction due to its crystal structure, low crystallinity, and morphology.![]()
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Affiliation(s)
- Yoshifumi Kondo
- The Institute of Scientific and Industrial Research (ISIR), Osaka University 8-1 Mihogaoka, Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436.,Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita Osaka 565-0871 Japan
| | - Tomoyo Goto
- The Institute of Scientific and Industrial Research (ISIR), Osaka University 8-1 Mihogaoka, Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436
| | - Tohru Sekino
- The Institute of Scientific and Industrial Research (ISIR), Osaka University 8-1 Mihogaoka, Ibaraki Osaka 567-0047 Japan +81-6-6879-8439 +81-6-6879-8436
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Bi J, Wang J, Huang X, Tao Q, Chen M, Wang T, Hao H. Enhanced removal of Pb(II) and organics by titanate in a designed simultaneous process. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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40
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Chung YH, Han K, Lin CY, O’Neill D, Mul G, Mei B, Yang CM. Photocatalytic hydrogen production by photo-reforming of methanol with one-pot synthesized Pt-containing TiO2 photocatalysts. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.07.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Besprozvannykh NV, Sinel’shchikova OY, Morozov NA, Kuchaeva SK, Postnov AY. Synthesis and Physicochemical Properties of Complex Oxides K2MexTi8–xO16 (Me = Mg, Ni, Al) of Hollandite Structure. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220080042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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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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43
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Morozov NA, Sinelshchikova OY, Besprozvannykh NV, Maslennikova TP. Effect of the Method of Synthesis on the Photocatalytic and Sorption Properties for Potassium Polytitanates Doped with Di- and Trivalent Metal Ions. RUSS J INORG CHEM+ 2020. [DOI: 10.1134/s0036023620080124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Chang YC, Lin JC, Chou CM. H2Ti3O7 nanowires as a high-performance photocatalytic and surface-enhanced Raman scattering substrate. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112666] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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45
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Impact of Titanium Dioxide (TiO2) Modification on Its Application to Pollution Treatment—A Review. Catalysts 2020. [DOI: 10.3390/catal10070804] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A high-efficiency method to deal with pollutants must be found because environmental problems are becoming more serious. Photocatalytic oxidation technology as the environmentally-friendly treatment method can completely oxidate organic pollutants into pollution-free small-molecule inorganic substances without causing secondary pollution. As a widely used photocatalyst, titanium dioxide (TiO2) can greatly improve the degradation efficiency of pollutants, but several problems are noted in its practical application. TiO2 modified by different materials has received extensive attention in the field of photocatalysis because of its excellent physical and chemical properties compared with pure TiO2. In this review, we discuss the use of different materials for TiO2 modification, highlighting recent developments in the synthesis and application of TiO2 composites using different materials. Materials discussed in the article can be divided into nonmetallic and metallic. Mechanisms of how to improve catalytic performance of TiO2 after modification are discussed, and the future development of modified TiO2 is prospected.
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46
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Kanth N, Xu W, Prasad U, Ravichandran D, Kannan AM, Song K. PMMA-TiO 2 Fibers for the Photocatalytic Degradation of Water Pollutants. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1279. [PMID: 32629803 PMCID: PMC7407631 DOI: 10.3390/nano10071279] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/20/2020] [Accepted: 06/21/2020] [Indexed: 11/16/2022]
Abstract
Titanium dioxide (TiO2) is a promising photocatalyst that possesses a redox potential suitable for environmental remediation applications. A low photocatalytic yield and high cost have thus far limited the commercial adoption of TiO2-based fixed-bed reactors. One solution is to engineer the physical geometry or chemical composition of the substrate to overcome these limitations. In this work, porous polymethyl methacrylate (PMMA) substrates with immobilized TiO2 nanoparticles in fiber forms were fabricated and analyzed to demonstrate the influence of contaminant transport and light accessibility on the overall photocatalytic performance. The influences of (i) fiber porosity and (ii) fiber architecture on the overall photocatalytic performance were investigated. The porous structure was fabricated using wet phase inversion. The core-shell-structured fibers exhibited much higher mechanical properties than the porous fibers (7.52 GPa vs. non-testability) and maintained the same degradation rates as porous structures (0.059 vs. 0.053/min) in removing methylene blue with comparable specific surface areas. The highest methylene blue (MB) degradation rate (kMB) of 0.116 min-1 was observed due to increases of the exposed surface area, pointing to more efficient photocatalysis by optimizing core-shell dimensions. This research provides an easy-to-manufacture and cost-efficient method for producing PMMA/TiO2 core-shell fibers with a broad application in water treatment, air purification, and volatile sensors.
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Affiliation(s)
- Namrata Kanth
- Materials Science & Engineering, School for Engineering of Matter, Transport and Energy (SEMTE), Ira A. Fulton Schools of Engineering, Arizona State University, Tempe, AZ 85281, USA;
| | - Weiheng Xu
- System Engineering, The Polytechnic School (TPS), Ira A. Fulton Schools of Engineering, Arizona State University, Mesa, AZ 85212, USA; (W.X.); (U.P.); (D.R.)
| | - Umesh Prasad
- System Engineering, The Polytechnic School (TPS), Ira A. Fulton Schools of Engineering, Arizona State University, Mesa, AZ 85212, USA; (W.X.); (U.P.); (D.R.)
| | - Dharneedar Ravichandran
- System Engineering, The Polytechnic School (TPS), Ira A. Fulton Schools of Engineering, Arizona State University, Mesa, AZ 85212, USA; (W.X.); (U.P.); (D.R.)
| | - Arunachala Mada Kannan
- The Polytechnic School, School for Engineering of Matter, Transport, and Energy (SEMTE), Ira A. Fulton Schools of Engineering, Arizona State University, Mesa, AZ 85212, USA;
| | - Kenan Song
- The Polytechnic School, School for Engineering of Matter, Transport, and Energy (SEMTE), Ira A. Fulton Schools of Engineering, Arizona State University, Mesa, AZ 85212, USA;
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47
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Benčina M, Iglič A, Mozetič M, Junkar I. Crystallized TiO 2 Nanosurfaces in Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1121. [PMID: 32517276 PMCID: PMC7353402 DOI: 10.3390/nano10061121] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 12/25/2022]
Abstract
Crystallization alters the characteristics of TiO2 nanosurfaces, which consequently influences their bio-performance. In various biomedical applications, the anatase or rutile crystal phase is preferred over amorphous TiO2. The most common crystallization technique is annealing in a conventional furnace. Methods such as hydrothermal or room temperature crystallization, as well as plasma electrolytic oxidation (PEO) and other plasma-induced crystallization techniques, present more feasible and rapid alternatives for crystal phase initiation or transition between anatase and rutile phases. With oxygen plasma treatment, it is possible to achieve an anatase or rutile crystal phase in a few seconds, depending on the plasma conditions. This review article aims to address different crystallization techniques on nanostructured TiO2 surfaces and the influence of crystal phase on biological response. The emphasis is given to electrochemically anodized nanotube arrays and their interaction with the biological environment. A short overview of the most commonly employed medical devices made of titanium and its alloys is presented and discussed.
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Affiliation(s)
- Metka Benčina
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (M.M.); (I.J.)
| | - Aleš Iglič
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, SI-1000 Ljubljana, Slovenia;
- Faculty of Medicine, University of Ljubljana, Zaloška 9, SI-1000 Ljubljana, Slovenia
| | - Miran Mozetič
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (M.M.); (I.J.)
| | - Ita Junkar
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (M.M.); (I.J.)
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48
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Soontornchaiyakul W, Fujimura T, Yano N, Kataoka Y, Sasai R. Photocatalytic Hydrogen Evolution over Exfoliated Rh-Doped Titanate Nanosheets. ACS OMEGA 2020; 5:9929-9936. [PMID: 32391480 PMCID: PMC7203949 DOI: 10.1021/acsomega.0c00204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/18/2020] [Indexed: 05/30/2023]
Abstract
Various amounts of Rh-doped titanate nanosheets (Ti3NS:Rh(x), where x is doped amount) were prepared to develop a new nanostructured photocatalyst based on metal oxide compounds that can split water to produce H2 under sunlight. Ti3NS:Rh(x) was obtained by acid exchange, intercalation, and exfoliation of Rh-doped layered sodium titanate compound (Na2Ti3-x Rh x O7). A new energy gap was found in the diffuse reflection spectrum of the Ti3NS:Rh(x) colloidal suspension solution; this new energy gap corresponds to electrons in the 4d level of Rh3+ or Rh4+, which are doped in the Ti4+ site. A photocatalyst activity of Ti3NS:Rh(x) for H2 evolution in water with triethylamine (TEA) as an electron donor was investigated. The appropriate amount of Rh doping can improve the photocatalytic activity of Ti3NS for H2 evolution from water using triethylamine (TEA) as a sacrifice agent. The reason was related to the rich state of Rh3+ or Rh4+ doped in the Ti4+ site of Ti3NS. Doping Rh 1 mol % of Ti, Ti3NS:Rh(0.03) shows the H2 evolution rates up to 1040 nmol/h, which is about 25 times larger than that of nondoped Ti3NS under UV irradiation (>220 nm) and 302 nmol/h under near-UV irradiation (>340 nm). These results show that the development of new nanostructured photocatalyst based on Rh-doped titanate compounds that can produce H2 under near-UV irradiation present in sunlight was a success.
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Affiliation(s)
- Wasusate Soontornchaiyakul
- Department of Physics
and Materials Science, Interdisciplinary Graduate School of Science
and Engineering, Shimane University, 1060, Nishikawatsu-cho, Matsue 690-8504, Shimane, Japan
| | - Takuya Fujimura
- Graduate School
of Natural Science and Technology, Shimane
University, 1060, Nishikawatsu-cho, Matsue 690-8504, Shimane, Japan
| | - Natsumi Yano
- Graduate School
of Natural Science and Technology, Shimane
University, 1060, Nishikawatsu-cho, Matsue 690-8504, Shimane, Japan
| | - Yusuke Kataoka
- Graduate School
of Natural Science and Technology, Shimane
University, 1060, Nishikawatsu-cho, Matsue 690-8504, Shimane, Japan
| | - Ryo Sasai
- Graduate School
of Natural Science and Technology, Shimane
University, 1060, Nishikawatsu-cho, Matsue 690-8504, Shimane, Japan
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49
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da Silva Cardoso R, Maria de Amorim S, Scaratti G, Moura-Nickel CD, Muniz Moreira RP, Li Puma G, Moreira RDFPM. Structural, optical and photocatalytic properties of erbium (Er 3+) and yttrium (Y 3+) doped TiO 2 thin films with remarkable self-cleaning super-hydrophilic properties. RSC Adv 2020; 10:17247-17254. [PMID: 35521462 PMCID: PMC9053396 DOI: 10.1039/d0ra02242j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/26/2020] [Indexed: 01/15/2023] Open
Abstract
The self-cleaning and super hydrophilic properties of pristine TiO2 and of TiO2 doped with Er3+ or Y3+ transparent thin films deposited onto glass substrates were investigated. The thin films prepared by multiple dipping and drying cycles of the glass substrate into the pristine TiO2 sol and Er3+ or Y3+-doped TiO2 sol were characterized by X-ray diffraction, UV-vis spectrophotometry, and atomic force microscopy (AFM). The self-cleaning photocatalytic activity of the thin films towards the removal of oleic acid deposited on the surface under UVA irradiation was evaluated. A remarkable enhancement was observed in the hydrophilic nature of the TiO2 thin films under irradiation. The optical properties and wettability of TiO2 were not affected by Er3+ or Y3+ doping. However, the photocatalytic degradation of oleic acid under UVA irradiation improved up to 1.83 or 1.95 fold as the Er3+ or Y3+ content increased, respectively, due to the enhanced separation of the photogenerated carriers and reduced crystallite size. AFM analysis showed that the surface roughness increased by increasing the Er3+ or Y3+ content due to the formation of large aggregates. This in turn contributes to the increase of the active surface area enhancing the photodegradation process. This study demonstrates that TiO2 doped with low amounts of Er3+ or Y3+ down to 0.5 mol% can produce transparent, super-hydrophilic, thin film surfaces with remarkable self-cleaning properties.
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Affiliation(s)
- Raquel da Silva Cardoso
- Department of Chemical and Food Engineering, Federal University of Santa Catarina Florianópolis Brazil
| | - Suélen Maria de Amorim
- Department of Chemical and Food Engineering, Federal University of Santa Catarina Florianópolis Brazil
| | - Gidiane Scaratti
- Department of Chemical and Food Engineering, Federal University of Santa Catarina Florianópolis Brazil
| | | | - Rodrigo Peralta Muniz Moreira
- Environmental Nanocatalysis & Photoreaction Engineering, Department of Chemical Engineering, Loughborough University UK
| | - Gianluca Li Puma
- Environmental Nanocatalysis & Photoreaction Engineering, Department of Chemical Engineering, Loughborough University UK
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50
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Zhang H, Hu M, Lv Q, Huang ZH, Kang F, Lv R. Advanced Materials for Sodium-Ion Capacitors with Superior Energy-Power Properties: Progress and Perspectives. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1902843. [PMID: 31550082 DOI: 10.1002/smll.201902843] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/11/2019] [Indexed: 06/10/2023]
Abstract
Developing electrochemical energy storage devices with high energy-power densities, long cycling life, as well as low cost is of great significance. Sodium-ion capacitors (NICs), with Na+ as carriers, are composed of a high capacity battery-type electrode and a high rate capacitive electrode. However, unlike their lithium-ion analogues, the research on NICs is still in its infancy. Rational material designs still need to be developed to meet the increasing requirements for NICs with superior energy-power performance and low cost. In the past few years, various materials have been explored to develop NICs with the merits of superior electrochemical performance, low cost, good stability, and environmental friendliness. Here, the material design strategies for sodium-ion capacitors are summarized, with focus on cathode materials, anode materials, and electrolytes. The challenges and opportunities ahead for the future research on materials for NICs are also proposed.
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Affiliation(s)
- Hongwei Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Mingxiang Hu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Qian Lv
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Zheng-Hong Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Feiyu Kang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
- Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, P. R. China
| | - Ruitao Lv
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, P. R. China
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