1
|
Santos JS, Fereidooni M, Márquez V, Paz-López CV, Villanueva MS, Buijnsters JG, Praserthdam S, Praserthdam P. Photoactivity of amorphous and crystalline TiO 2 nanotube arrays (TNA) films in gas phase CO 2 reduction to methane with simultaneous H 2 production. Environ Res 2024; 244:117919. [PMID: 38103777 DOI: 10.1016/j.envres.2023.117919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/14/2023] [Accepted: 12/09/2023] [Indexed: 12/19/2023]
Abstract
This study assessed the photoactivity of amorphous and crystalline TiO2 nanotube arrays (TNA) films in gas phase CO2 reduction. The TNA photocatalysts were fabricated by titanium anodization and submitted to an annealing treatment for crystallization and/or cathodic reduction to introduce Ti3+ and oxygen vacancies into the TiO2 structure. The cathodic reduction demonstrated a significant effect on the generated photocurrent. The photoactivity of the four TNA catalysts in CO2 reduction with water vapor was evaluated under UV irradiation for 3 h, where CH4 and H2 were detected as products. The annealed sample exhibited the best performance towards methane with a production rate of 78 μmol gcat-1 h-1, followed by the amorphous film, which also exhibited an impressive formation rate of 64 μmol gcat-1 h-1. The amorphous and reduced-amorphous films exhibited outstanding photoactivity regarding H2 production (142 and 144 μmol gcat-1 h-1, respectively). The annealed catalyst also revealed a good performance for H2 production (132 μmol gcat-1 h-1) and high stability up to five reaction cycles. Molecular dynamic simulations demonstrated the changes in the band structure by introducing oxygen vacancies. The topics covered in this study contribute to the Sustainable Development Goals (SDG), involving affordable and clean energy (SDG#7) and industry, innovation, and infrastructure (SDG#9).
Collapse
Affiliation(s)
- Janaina S Santos
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Mohammad Fereidooni
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Victor Márquez
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Christian V Paz-López
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Martin S Villanueva
- Facultad de Ingeniería, Benemerita Universidad Autonoma de Puebla, Apartado Postal J-39, CP, 72570, Puebla, Mexico
| | - Josephus G Buijnsters
- Department of Precision and Microsystems Engineering, Research Group of Micro and Nano Engineering, Delft University of Technology, Mekelweg 2, 2628 CD, Delft, the Netherlands
| | - Supareak Praserthdam
- High-Performance Computing Unit, Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC-HCU), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Piyasan Praserthdam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering (CECC), Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| |
Collapse
|
2
|
Sołtys-mróz M, Syrek K, Pięta Ł, Malek K, Sulka GD. Photoelectrochemical Performance of Nanotubular Fe2O3–TiO2 Electrodes under Solar Radiation. Nanomaterials 2022; 12:1546. [PMID: 35564255 PMCID: PMC9131132 DOI: 10.3390/nano12091546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/18/2022] [Accepted: 04/28/2022] [Indexed: 11/24/2022]
Abstract
Fe2O3–TiO2 materials were obtained by the cathodic electrochemical deposition of Fe on anodic TiO2 at different deposition times (5–180 s), followed by annealing at 450 °C. The effect of the hematite content on the photoelectrochemical (PEC) activity of the received materials was studied. The synthesized electrodes were characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), Raman spectroscopy, diffuse reflectance spectroscopy (DRS), Mott–Schottky analysis, and PEC measurements. It was shown that the amount of deposited iron (ca. 0.5 at.%–30 at.%) and, consequently, hematite after a final annealing increased with the extension of deposition time and directly affected the semiconducting properties of the hybrid material. It was observed that the flat band potential shifted towards more positive values, facilitating photoelectrochemical water oxidation. In addition, the optical band gap decreased from 3.18 eV to 2.77 eV, which resulted in enhanced PEC visible-light response. Moreover, the Fe2O3–TiO2 electrodes were sensitive to the addition of glucose, which indicates that such materials may be considered as potential PEC sensors for the detection of glucose.
Collapse
|
3
|
Warmuth L, Nails G, Casapu M, Wang S, Behrens S, Grunwaldt J, Feldmann C. Catalytic CO Oxidation and H2O2 Direct Synthesis over Pd and Pt-Impregnated Titania Nanotubes. Catalysts 2021; 11:949. [DOI: 10.3390/catal11080949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Titania nanotubes (TNTs) impregnated with Pd and Pt nanoparticles are evaluated as heterogeneous catalysts in different conditions in two reactions: catalytic CO oxidation (gas phase, up to 500 °C) and H2O2 direct synthesis (liquid phase, 30 °C). The TNTs are obtained via oxidation of titanium metal and the intermediate layer-type sodium titanate Na2Ti3O7. Thereafter, the titanate layers are exfoliated and show self-rolling to TNTs, which, finally, are impregnated with Pd or Pt nanoparticles at room temperature by using Pd(ac)2 and Pt(ac)2. The resulting crystalline Pd/TNTs and Pt/TNTs are realized with different lengths (long TNTs: 2.0–2.5 µm, short TNTs: 0.23–0.27 µm) and a specific surface area up to 390 m2/g. The deposited Pd and Pt particles are 2–5 nm in diameter. The TNT-derived catalysts show good thermal (up to 500 °C) and chemical stability (in liquid-phase and gas-phase reactions). The catalytic evaluation results in a low CO oxidation light-out temperature of 150 °C for Pt/TNTs (1 wt-%) and promising H2O2 generation with a productivity of 3240 molH2O2 kgPd−1 h−1 (Pd/TNTs, 5 wt-%, 30 °C). Despite their smaller surface area, long TNTs outperform short TNTs with regard to both CO oxidation and H2O2 formation.
Collapse
|
4
|
Aguirre Ocampo R, Echeverry-Rendón M, DeAlba-Montero I, Robledo S, Ruiz F, Echeverría Echeverría F. Effect of surface characteristics on the antibacterial properties of titanium dioxide nanotubes produced in aqueous electrolytes with carboxymethyl cellulose. J Biomed Mater Res A 2020; 109:104-121. [PMID: 32441468 DOI: 10.1002/jbm.a.37010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 04/14/2020] [Accepted: 04/19/2020] [Indexed: 12/19/2022]
Abstract
Nanotubular structures were produced on a commercially pure titanium surface by anodization in an aqueous electrolyte that contained carboxymethyl cellulose and sodium fluoride. The internal diameters obtained were about 100, 48, and 9.5 nm, respectively. Several heat treatments at 200, 350, and 600°C were made to produce nanotubes with different titanium dioxide polymorphs (anatase, rutile). All tested surfaces were superhydrophilic, this behavior was maintained after at least 30 days, regardless of the heat treatment. Although in previous works the nanotube features effect on the bacteria behavior had been studied; this item still unclear. For the best of our knowledge, the effect of small internal diameters (about 10 nm) with and without heat treatment and with and without ultraviolet (UV) irradiation on the bacteria strains comportment has not been reported. From our results, both the internal diameter and the postanodized treatments have an effect on the bacteria strains comportment. All nanotubular coatings UV treated and heat treated at 350 and 600°C; despite they have different inner diameters, inhibit the bacteria growth of both Staphylococcus aureus and Pseudomonas aeruginosa strains. The nanotubular coatings obtained at 20 V and heat treated at 350°C produced the lower bacteria adhesion against both strains evaluated.
Collapse
Affiliation(s)
- Robinson Aguirre Ocampo
- Centro de Investigación, Innovación y Desarrollo de Materiales CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Mónica Echeverry-Rendón
- Centro de Investigación, Innovación y Desarrollo de Materiales CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia.,Programa de Estudio y Control de Enfermedades Tropicales (PECET), Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Idania DeAlba-Montero
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Sara Robledo
- Programa de Estudio y Control de Enfermedades Tropicales (PECET), Instituto de Investigaciones Médicas, Facultad de Medicina, Universidad de Antioquia UdeA, Medellín, Colombia
| | - Facundo Ruiz
- Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Félix Echeverría Echeverría
- Centro de Investigación, Innovación y Desarrollo de Materiales CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia
| |
Collapse
|
5
|
Diaz-real J, Elsaesser P, Holm T, Mérida W. Electrochemical reduction on nanostructured TiO2 for enhanced photoelectrocatalytic oxidation. Electrochim Acta 2020; 329:135162. [DOI: 10.1016/j.electacta.2019.135162] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
6
|
Abbas WA, Abdullah IH, Ali BA, Ahmed N, Mohamed AM, Rezk MY, Ismail N, Mohamed MA, Allam NK. Recent advances in the use of TiO 2 nanotube powder in biological, environmental, and energy applications. Nanoscale Adv 2019; 1:2801-2816. [PMID: 36133585 PMCID: PMC9418402 DOI: 10.1039/c9na00339h] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/01/2019] [Indexed: 05/26/2023]
Abstract
The use of titanium dioxide nanotubes in the powder form (TNTP) has been a hot topic for the past few decades in many applications. The high quality of the fabricated TNTP by various synthetic routes may meet the required threshold of performance in a plethora of fields such as drug delivery, sensors, supercapacitors, and photocatalytic applications. This review briefly discusses the synthesis techniques of TNTP, their use in various applications, and future perspectives to expand their use in more applications.
Collapse
Affiliation(s)
- Walaa A Abbas
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Ibrahim H Abdullah
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Basant A Ali
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Nashaat Ahmed
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Aya M Mohamed
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Marwan Y Rezk
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Noha Ismail
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Mona A Mohamed
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| | - Nageh K Allam
- Energy Materials Laboratory, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
| |
Collapse
|
7
|
Oriol R, Sirés I, Brillas E, De Andrade AR. A hybrid photoelectrocatalytic/photoelectro-Fenton treatment of Indigo Carmine in acidic aqueous solution using TiO2 nanotube arrays as photoanode. J Electroanal Chem (Lausanne) 2019; 847:113088. [DOI: 10.1016/j.jelechem.2019.04.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
8
|
Yalavarthi R, Naldoni A, Kment Š, Mascaretti L, Kmentová H, Tomanec O, Schmuki P, Zbořil R. Radiative and Non-Radiative Recombination Pathways in Mixed-Phase TiO2 Nanotubes for PEC Water-Splitting. Catalysts 2019; 9:204. [DOI: 10.3390/catal9020204] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Anatase and rutile mixed-phase TiO2 with an ideal ratio has been proven to significantly enhance photoelectrochemical (PEC) activity in water-splitting applications due to suppressing the electron–hole recombination. However, the mechanism of this improvement has not been satisfactory described yet. The PEC water oxidation (oxygen evolution) at the interface of TiO2 photoanode and electrolyte solution is determined by the fraction of the photogenerated holes that reach the solution and it is defined as the hole transfer efficiency. The surface and bulk recombination processes in semiconductor photoanodes majorly influence the hole transfer efficiency. In this work, we study the hole transfer process involved in mixed-phase TiO2 nanotube arrays/solution junction using intensity-modulated photocurrent and photovoltage spectroscopy (IMPS and IMVS); then, we correlate the obtained hole transfer rate constants to (photo)electrochemical impedance spectroscopy (PEIS) measurements. The results suggest that the enhanced performance of the TiO2 mixed-phase is due to the improved hole transfer rate across the TiO2/liquid interface as well as to the decrease in the surface trap recombination of the holes.
Collapse
|
9
|
Díaz-Real JA, Dubed-Bandomo GC, Galindo-de-la-Rosa J, Arriaga LG, Ledesma-García J, Alonso-Vante N. Impact of the anodization time on the photocatalytic activity of TiO 2 nanotubes. Beilstein J Nanotechnol 2018; 9:2628-2643. [PMID: 30416913 PMCID: PMC6204776 DOI: 10.3762/bjnano.9.244] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 09/21/2018] [Indexed: 06/09/2023]
Abstract
Titanium oxide nanotubes (TNTs) were anodically grown in ethylene glycol electrolyte. The influence of the anodization time on their physicochemical and photoelectrochemical properties was evaluated. Concomitant with the anodization time, the NT length, fluorine content, and capacitance of the space charge region increased, affecting the opto-electronic properties (bandgap, bathochromic shift, band-edge position) and surface hydrophilicity of TiO2 NTs. These properties are at the origin of the photocatalytic activity (PCA), as proved with the photooxidation of methylene blue.
Collapse
Affiliation(s)
- Jesús A Díaz-Real
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703, Querétaro, México
- IC2MP, UMR-CNRS 7285, Université de Poitiers, 4 rue Michel Brunet, F-86073 Poitiers, France
- Facultad de Ingeniería, División de Investigación y Posgrado, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas, Querétaro, Qro., C.P. 76010, Mexico
- The University of British Columbia, Clean Energy Research Centre, 6250 Applied Science Lane, Vancouver, British Columbia, V6T 1Z4, Canada
| | - Geyla C Dubed-Bandomo
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703, Querétaro, México
| | - Juan Galindo-de-la-Rosa
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703, Querétaro, México
| | - Luis G Arriaga
- Centro de Investigación y Desarrollo Tecnológico en Electroquímica, 76703, Querétaro, México
| | - Janet Ledesma-García
- Facultad de Ingeniería, División de Investigación y Posgrado, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas, Querétaro, Qro., C.P. 76010, Mexico
| | - Nicolas Alonso-Vante
- IC2MP, UMR-CNRS 7285, Université de Poitiers, 4 rue Michel Brunet, F-86073 Poitiers, France
| |
Collapse
|
10
|
Tao J, Chen S, Guan L, Chen G, Yu C, Chen L, Cheng X, Zhang H, Xie X. Well-patterned Au nanodots on MoS2/TiO2 hybrids for enhanced hydrogen evolution activity. Electrochim Acta 2018; 283:419-27. [DOI: 10.1016/j.electacta.2018.06.194] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
11
|
Kapusta-Kołodziej J, Chudecka A, Sulka GD. 3D nanoporous titania formed by anodization as a promising photoelectrode material. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.06.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Giorgi L, Dikonimos T, Giorgi R, Buonocore F, Faggio G, Messina G, Lisi N. Electrochemical synthesis of self-organized TiO 2 crystalline nanotubes without annealing. Nanotechnology 2018; 29:095604. [PMID: 29283108 DOI: 10.1088/1361-6528/aaa448] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This work demonstrates that upon anodic polarization in an aqueous fluoride-containing electrolyte, TiO2 nanotube array films can be formed with a well-defined crystalline phase, rather than an amorphous one. The crystalline phase was obtained avoiding any high temperature annealing. We studied the formation of nanotubes in an HF/H2O medium and the development of crystalline grains on the nanotube wall, and we found a facile way to achieve crystalline TiO2 nanotube arrays through a one-step anodization. The crystallinity of the film was influenced by the synthesis parameters, and the optimization of the electrolyte composition and anodization conditions (applied voltage and time) were carried out. For comparison purposes, crystalline anatase TiO2 nanotubes were also prepared by thermal treatment of amorphous nanotubes grown in an organic bath (ethylene glycol/NH4F/H2O). The morphology and the crystallinity of the nanotubes were studied by field emission gun-scanning electron microscopy (FEG-SEM) and Raman spectroscopy, whereas the electrochemical and semiconducting properties were analyzed by means of linear sweep voltammetry, impedance spectroscopy, and Mott-Schottky plots. X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS) allowed us to determine the surface composition and the electronic structure of the samples and to correlate them with the electrochemical data. The optimal conditions to achieve a crystalline phase with high donor concentration are defined.
Collapse
Affiliation(s)
- Leonardo Giorgi
- Materials Science & Electrochemistry, Via Mantova 11, 00042 Anzio, Roma, Italy
| | | | | | | | | | | | | |
Collapse
|
13
|
Sierra-Uribe H, Carrera-Crespo JE, Cano A, Córdoba-Tuta EM, González I, Acevedo-Peña P. Electroreduction as a viable strategy to obtain TiO2 nanotube films with preferred anatase crystal orientation and its impact on photoelectrochemical performance. J Solid State Electrochem 2018. [DOI: 10.1007/s10008-018-3890-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
14
|
Silva DD, Sánchez-Montes I, Hammer P, Aquino JM. On the supercapacitor performance of microwave heat treated self organized TiO2 nanotubes: influence of the cathodic pre-treatment, water aging, and thermal oxide. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.05.112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Khan H. Sol–gel synthesis of TiO2 from TiOSO4: characterization and UV photocatalytic activity for the degradation of 4-chlorophenol. Reac Kinet Mech Cat 2017; 121:811-32. [DOI: 10.1007/s11144-017-1195-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
16
|
Zazpe R, Prikryl J, Gärtnerova V, Nechvilova K, Benes L, Strizik L, Jäger A, Bosund M, Sopha H, Macak JM. Atomic Layer Deposition Al 2O 3 Coatings Significantly Improve Thermal, Chemical, and Mechanical Stability of Anodic TiO 2 Nanotube Layers. Langmuir 2017; 33:3208-3216. [PMID: 28291942 PMCID: PMC5382572 DOI: 10.1021/acs.langmuir.7b00187] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We report on a very significant enhancement of the thermal, chemical, and mechanical stability of self-organized TiO2 nanotubes layers, provided by thin Al2O3 coatings of different thicknesses prepared by atomic layer deposition (ALD). TiO2 nanotube layers coated with Al2O3 coatings exhibit significantly improved thermal stability as illustrated by the preservation of the nanotubular structure upon annealing treatment at high temperatures (870 °C). In addition, a high anatase content is preserved in the nanotube layers against expectation of the total rutile conversion at such a high temperature. Hardness of the resulting nanotube layers is investigated by nanoindentation measurements and shows strongly improved values compared to uncoated counterparts. Finally, it is demonstrated that Al2O3 coatings guarantee unprecedented chemical stability of TiO2 nanotube layers in harsh environments of concentrated H3PO4 solutions.
Collapse
Affiliation(s)
- Raul Zazpe
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, nam. Cs. legii 565, 53002 Pardubice, Czech Republic
| | - Jan Prikryl
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, nam. Cs. legii 565, 53002 Pardubice, Czech Republic
| | - Viera Gärtnerova
- Laboratory
of Nanostructures and Nanomaterials, Institute
of Physics of the CAS, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - Katerina Nechvilova
- Institute of Chemistry and Technology of Macromolecular Materials,
Faculty of Chemical Technology, and Department of General and Inorganic Chemistry,
Faculty of Chemical Technology, University
of Pardubice, Studentska
573, 532 10 Pardubice, Czech Republic
| | - Ludvik Benes
- Joint
laboratory of Solid-State Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentska 95, 532
10 Pardubice, Czech Republic
| | - Lukas Strizik
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, nam. Cs. legii 565, 53002 Pardubice, Czech Republic
- Institute of Chemistry and Technology of Macromolecular Materials,
Faculty of Chemical Technology, and Department of General and Inorganic Chemistry,
Faculty of Chemical Technology, University
of Pardubice, Studentska
573, 532 10 Pardubice, Czech Republic
| | - Ales Jäger
- Laboratory
of Nanostructures and Nanomaterials, Institute
of Physics of the CAS, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic
| | | | - Hanna Sopha
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, nam. Cs. legii 565, 53002 Pardubice, Czech Republic
| | - Jan M. Macak
- Center
of Materials and Nanotechnologies, Faculty of Chemical Technology, University of Pardubice, nam. Cs. legii 565, 53002 Pardubice, Czech Republic
- E-mail , Ph +420-466 037 401 (J.M.M.)
| |
Collapse
|
17
|
Li D, Chen D, Wang J, Liang P. Effect of acid solution, fluoride ions, anodic potential and time on the microstructure and electronic properties of self-ordered TiO 2 nanotube arrays. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.04.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
18
|
Carrera-crespo JE, Rincón ME, González F, Barrera E, González I. Improving the contact properties of CdS-decorated TiO2 nanotube arrays using an electrochemical/thermal/chemical approach. J Solid State Electrochem 2016; 20:2713-23. [DOI: 10.1007/s10008-016-3282-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
19
|
Munirathinam B, Neelakantan L. Role of crystallinity on the nanomechanical and electrochemical properties of TiO2 nanotubes. J Electroanal Chem (Lausanne) 2016; 770:73-83. [DOI: 10.1016/j.jelechem.2016.03.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
20
|
Ding J, Huang Z, Zhu J, Kou S, Zhang X, Yang H. Low-temperature synthesis of high-ordered anatase TiO2 nanotube array films coated with exposed {001} nanofacets. Sci Rep 2015; 5:17773. [PMID: 26634815 PMCID: PMC4669522 DOI: 10.1038/srep17773] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/04/2015] [Indexed: 12/02/2022] Open
Abstract
High-ordered anatase TiO2 nanotube array films coated with exposed high-reactive {001} nanofacets were fabricated by a modified hydrothermal method using amorphous anodic TiO2 nanotube arrays (ATONAs) as starting materials. It was found that the reaction between gas phase HF and solid ATONAs played a key role in the transformation process from amorphous to anatase TiO2, and the TiO2 tubular structure kept unchanged during the surface modification with an exposed {001} facets up to 76.5%, which could be attributed to the low reaction temperature of 130 °C. Our study provided a novel route for the facile preparation of {001} facets exposed anatase TiO2.
Collapse
Affiliation(s)
- Jie Ding
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Zheda Road 38, Hangzhou 310027, China
| | - Zhennan Huang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Zheda Road 38, Hangzhou 310027, China.,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| | - Jihao Zhu
- The Second Institute of Oceanography, State Oceanic Administration, Baochubei Road 36, Hangzhou 310012, China
| | - Shengzhong Kou
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
| | - Xiaobin Zhang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Zheda Road 38, Hangzhou 310027, China
| | - Hangsheng Yang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Zheda Road 38, Hangzhou 310027, China
| |
Collapse
|
21
|
Lin J, Liu X, Zhu S, Liu Y, Chen X. Anatase TiO2 nanotube powder film with high crystallinity for enhanced photocatalytic performance. Nanoscale Res Lett 2015; 10:110. [PMID: 25852405 PMCID: PMC4385124 DOI: 10.1186/s11671-015-0814-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 02/12/2015] [Indexed: 05/31/2023]
Abstract
We report on the synthesis of TiO2 nanotube (NT) powders using anodic oxidation and ultrasonication. Compared to free-standing NT array films, the powder-type NTs can be easily fabricated in a cost-effective way. Particularly, without the substrate effect arising from underlying Ti metals, highly crystallized NT powders with intact tube structures and pure anatase phase can be obtained using high-temperature heat treatment. The application of NTs with different crystallinity for the photocatalytic decomposition of methylene blue (MB) was then demonstrated. The results showed that with increasing annealing temperature, the photocatalytic decomposition rate was gradually enhanced, and the NT powder electrode annealed at 650°C showed the highest photoactivity. Compared to typical NTs annealed at 450°C, the rate constant increased by 2.7-fold, although the surface area was 21% lower. These findings indicate that the better photocatalytic activity was due to the significantly improved crystallinity of anatase anodic NTs in powder form, resulting in a low density of crystalline defects. This simple and efficient approach is applicable for scaled-up water purification and other light utilization applications.
Collapse
Affiliation(s)
- Jia Lin
- />Department of Physics, Shanghai University of Electric Power, 2103 Pingliang Road, Shanghai, 200090 China
| | - Xiaolin Liu
- />Department of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Shu Zhu
- />Department of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| | - Yongsheng Liu
- />Department of Physics, Shanghai University of Electric Power, 2103 Pingliang Road, Shanghai, 200090 China
| | - Xianfeng Chen
- />Department of Physics and Astronomy, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240 China
| |
Collapse
|
22
|
Acevedo-Peña P, González F, González G, González I. The effect of anatase crystal orientation on the photoelectrochemical performance of anodic TiO2 nanotubes. Phys Chem Chem Phys 2014; 16:26213-20. [PMID: 25363536 DOI: 10.1039/c4cp03930k] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
TiO2 nanotube films were prepared by anodizing Ti plates in ethylene glycol based electrolytes containing variable concentrations of ammonium fluoride and water. The morphology, optical and semiconducting properties, as well as the composition of TiO2 films were shown to be dependent on the anodizing bath composition. Among different film properties, only the preferential orientation of anatase crystals, quantified with the texture coefficient of the (004) plane, TC(004), showed the same dependence of photoelectrochemical performance on the electrolyte composition. The increased value of TC(004) was related to anatase crystals piling up in the [001] direction (normal to the plane of the Ti substrate), forming a fiber like texture structure along the tube that facilitates the transport of photogenerated electrons toward the conducting substrate.
Collapse
Affiliation(s)
- Próspero Acevedo-Peña
- Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186. Col. Vicentina, 09340, Ciudad de México, D.F., Mexico.
| | | | | | | |
Collapse
|