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Yuan Z, Zhu X, Gao X, An C, Wang Z, Zuo C, Dionysiou DD, He H, Jiang Z. Enhancing photocatalytic CO 2 reduction with TiO 2-based materials: Strategies, mechanisms, challenges, and perspectives. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 20:100368. [PMID: 38268554 PMCID: PMC10805649 DOI: 10.1016/j.ese.2023.100368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/10/2023] [Accepted: 12/10/2023] [Indexed: 01/26/2024]
Abstract
The concentration of atmospheric CO2 has exceeded 400 ppm, surpassing its natural variability and raising concerns about uncontrollable shifts in the carbon cycle, leading to significant climate and environmental impacts. A promising method to balance carbon levels and mitigate atmospheric CO2 rise is through photocatalytic CO2 reduction. Titanium dioxide (TiO2), renowned for its affordability, stability, availability, and eco-friendliness, stands out as an exemplary catalyst in photocatalytic CO2 reduction. Various strategies have been proposed to modify TiO2 for photocatalytic CO2 reduction and improve catalytic activity and product selectivity. However, few studies have systematically summarized these strategies and analyzed their advantages, disadvantages, and current progress. Here, we comprehensively review recent advancements in TiO2 engineering, focusing on crystal engineering, interface design, and reactive site construction to enhance photocatalytic efficiency and product selectivity. We discuss how modifications in TiO2's optical characteristics, carrier migration, and active site design have led to varied and selective CO2 reduction products. These enhancements are thoroughly analyzed through experimental data and theoretical calculations. Additionally, we identify current challenges and suggest future research directions, emphasizing the role of TiO2-based materials in understanding photocatalytic CO2 reduction mechanisms and in designing effective catalysts. This review is expected to contribute to the global pursuit of carbon neutrality by providing foundational insights into the mechanisms of photocatalytic CO2 reduction with TiO2-based materials and guiding the development of efficient photocatalysts.
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Affiliation(s)
- Zhimin Yuan
- School of Chemistry & Chemical Engineering and Environmental Engineering, Weifang University, Weifang, 261061, PR China
| | - Xianglin Zhu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China
| | - Xianqiang Gao
- College of Forestry, Shandong Agricultural University, Taian, 271018, PR China
| | - Changhua An
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, PR China
| | - Zheng Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Cheng Zuo
- School of Chemistry & Chemical Engineering and Environmental Engineering, Weifang University, Weifang, 261061, PR China
| | - Dionysios D. Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (DChEE), University of Cincinnati, Cincinnati, OH, 45221-0012, USA
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
| | - Zaiyong Jiang
- School of Chemistry & Chemical Engineering and Environmental Engineering, Weifang University, Weifang, 261061, PR China
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China
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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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Awang H, Hezam A, Peppel T, Strunk J. Enhancing the Photocatalytic Activity of Halide Perovskite Cesium Bismuth Bromide/Hydrogen Titanate Heterostructures for Benzyl Alcohol Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:752. [PMID: 38727346 PMCID: PMC11085227 DOI: 10.3390/nano14090752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024]
Abstract
Halide perovskite Cs3Bi2Br9 (CBB) has excellent potential in photocatalysis due to its promising light-harvesting properties. However, its photocatalytic performance might be limited due to the unfavorable charge carrier migration and water-induced properties, which limit the stability and photocatalytic performance. Therefore, we address this constraint in this work by synthesizing a stable halide perovskite heterojunction by introducing hydrogen titanate nanosheets (H2Ti3O7-NS, HTiO-NS). Optimizing the weight % (wt%) of CBB enables synthesizing the optimal CBB/HTiO-NS, CBHTNS heterostructure. The detailed morphology and structure characterization proved that the cubic shape of CBB is anchored on the HTiO-NS surface. The 30 wt% CBB/HTiO-NS-30 (CBHTNS-30) heterojunction showed the highest BnOH photooxidation performance with 98% conversion and 75% benzoic acid (BzA) selectivity at 2 h under blue light irradiation. Detailed optical and photoelectrochemical characterization showed that the incorporating CBB and HTiO-NS widened the range of the visible-light response and improved the ability to separate the photo-induced charge carriers. The presence of HTiO-NS has increased the oxidative properties, possibly by charge separation in the heterojunction, which facilitated the generation of superoxide and hydroxyl radicals. A possible reaction pathway for the photocatalytic oxidation of BnOH to BzH and BzA was also suggested. Furthermore, through scavenger experiments, we found that the photogenerated h+, e- and •O2- play an essential role in the BnOH photooxidation, while the •OH have a minor effect on the reaction. This work may provide a strategy for using HTiO-NS-based photocatalyst to enhance the charge carrier migration and photocatalytic performance of CBB.
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Affiliation(s)
- Huzaikha Awang
- Leibniz Institute for Catalysis, Albert-Einstein-Str. 29a, 18059 Rostock, Germany;
- Preparatory Centre for Science and Technology, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Sabah, Malaysia
| | - Abdo Hezam
- School of Natural Sciences, Technical University of Munich (TUM), Lichtenbergstr. 4, 85748 Garching, Germany;
| | - Tim Peppel
- Leibniz Institute for Catalysis, Albert-Einstein-Str. 29a, 18059 Rostock, Germany;
| | - Jennifer Strunk
- Leibniz Institute for Catalysis, Albert-Einstein-Str. 29a, 18059 Rostock, Germany;
- School of Natural Sciences, Technical University of Munich (TUM), Lichtenbergstr. 4, 85748 Garching, Germany;
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Wang J, Fu S, Hou P, Liu J, Li C, Zhang H, Wang G. Construction of TiO 2/CuPc Heterojunctions for the Efficient Photocatalytic Reduction of CO 2 with Water. Molecules 2024; 29:1899. [PMID: 38675718 PMCID: PMC11053929 DOI: 10.3390/molecules29081899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/17/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
Utilizing solar energy for photocatalytic CO2 reduction is an attractive research field because of its convenience, safety, and practicality. The selection of an appropriate photocatalyst is the key to achieve efficient CO2 reduction. Herein, we report the synthesis of TiO2/CuPc heterojunctions by compositing CuPc with TiO2 microspheres via a hydroxyl-induced self-assembly process. The experimental investigations demonstrated that the optimal TiO2/0.5CuPc photocatalyst exhibited a significantly enhanced CO2 photoreduction rate up to 32.4 μmol·g-1·h-1 under 300 W xenon lamp irradiation, which was 3.7 times that of the TiO2 microspheres alone. The results of photoelectrochemical experiments indicated that the construction of the heterojunctions by introducing CuPc effectively promoted the separation and transport of photogenerated carriers, thus enhancing the catalytic effect of the photocatalyst.
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Affiliation(s)
- Jun Wang
- Academic Affairs Office, Qiqihar Medical University, Qiqihar 161006, China;
| | - Shuang Fu
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (S.F.); (P.H.); (J.L.); (C.L.)
| | - Peng Hou
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (S.F.); (P.H.); (J.L.); (C.L.)
| | - Jun Liu
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (S.F.); (P.H.); (J.L.); (C.L.)
| | - Chao Li
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (S.F.); (P.H.); (J.L.); (C.L.)
| | - Hongguang Zhang
- College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China; (S.F.); (P.H.); (J.L.); (C.L.)
| | - Guowei Wang
- College of Pathology, Qiqihar Medical University, Qiqihar 161006, China
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Rustembekkyzy K, Zholdasbekov A, Abduvalov A, Kaikanov M, Atabaev TS. Porosity-dependent photoelectrochemical activity of double-layered TiO 2 thin films deposited by spin-coating method. RSC Adv 2023; 13:34482-34488. [PMID: 38024986 PMCID: PMC10667967 DOI: 10.1039/d3ra06914a] [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: 10/11/2023] [Accepted: 11/17/2023] [Indexed: 12/01/2023] Open
Abstract
Photoelectrochemical (PEC) cells made of low-cost, chemically stable, and abundant materials are crucial for green hydrogen production. In this regard, the fabrication of porous films with high light trapping ability and a large contact area is crucial for the production of efficient PEC cells. In this report, anatase TiO2 thin films with a porous double-layered structure were successfully prepared using a conventional spin-coating deposition method. Various amounts of polystyrene spheres were used as a pore-templating agent to control the porosity of the films. A range of characterization techniques, such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and photoluminescence were employed to assess the morphology, structural and optical properties of prepared TiO2 films. PEC measurements revealed that prepared double-layered TiO2 thin films exhibit porosity-dependent photocatalytic activity. For example, TiO2 films with an optimized porous structure demonstrated an increase in photocurrent density by a factor of ∼2.23 (to 141.7 μA cm-2) and photoconversion efficiency improvement by a factor of ∼2.14 as compared to non-porous double-layered TiO2 reference films. Absorbance and photoluminescence analysis confirmed that improved PEC activity can be attributed to increased light absorption by the porous structure and reduced charge carrier recombination.
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Affiliation(s)
- Kuralay Rustembekkyzy
- Department of Chemistry, Nazarbayev University Astana 010000 Kazakhstan +7 7172-70-60-26
| | - Amir Zholdasbekov
- Department of Chemistry, Nazarbayev University Astana 010000 Kazakhstan +7 7172-70-60-26
| | - Alshyn Abduvalov
- Department of Physics, Nazarbayev University Astana 010000 Kazakhstan
| | - Marat Kaikanov
- Department of Physics, Nazarbayev University Astana 010000 Kazakhstan
| | - Timur Sh Atabaev
- Department of Chemistry, Nazarbayev University Astana 010000 Kazakhstan +7 7172-70-60-26
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6
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Ke Z, Hang W, Yunsheng L, Wenrui Z, PengDang Z, Ruiyu Z. Ultrahigh-acetone-sensitivity sensor based on Pt-loaded TiO 2porous nanoparticles synthesized via a facile hydrothermal method. NANOTECHNOLOGY 2023; 35:045502. [PMID: 37871595 DOI: 10.1088/1361-6528/ad0603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 10/22/2023] [Indexed: 10/25/2023]
Abstract
A simple hydrothermal method based on an orthogonal experimental design was used to synthesis Pt-loaded TiO2mesoporous nanoparticles in one step. The successful synthesis of Pt-loaded TiO2nanoparticles was demonstrated by various characterization methods. The effects of the modification of Pt and its explanation are described in detail by means of the test results. Through systematic gas-sensing tests, we found that the Pt-loaded TiO2nanoparticles outperform pure TiO2nanoparticles, with a high response value (S= 42.5) to 200 ppm acetone at 260 °C and with a film thickness of 0.45 mm, far superior to that of pure TiO2. The response time (8 s) and recovery time (11 s) of the material are also relatively good with excellent selectivity and long-term stability (30 days). The frequent use of acetone as an organic solution in factories and laboratories, as well as the possibility of making a preliminary diagnosis of diabetes by detecting acetone levels in exhaled gas, make this work promising for environmental monitoring and medical diagnosis.
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Affiliation(s)
- Zhang Ke
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China
| | - Wei Hang
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China
| | - Li Yunsheng
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China
| | - Zhang Wenrui
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China
| | - Zhu PengDang
- School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai 201418, Shanghai, People's Republic of China
| | - Zhang Ruiyu
- School of Cyber Science and Engineering, Wuhan University, Wuhan 430072, Wuhan, People's Republic of China
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Almotairy ARZ, Al-Maswari BM, Alkanad K, Lokanath N, Radhika R, Venkatesha B. Nickel vanadate nitrogen-doped carbon nanocomposites for high-performance supercapacitor electrode. Heliyon 2023; 9:e18496. [PMID: 37533978 PMCID: PMC10392098 DOI: 10.1016/j.heliyon.2023.e18496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 07/12/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023] Open
Abstract
A nickel-vanadium-based bimetallic precursor was produced using the polymerization process by urea-formaldehyde copolymers. The precursor was then calcined at 800 °C in an argon ambiance to form a Ni3V2O8-NC magnetic nanocomposite. Powerful techniques were used to study the physical characteristics and chemical composition of the fabricated Ni3V2O8-NC electrode. PXRD, Raman, and FTIR analyses proved that the crystal structure of Ni3V2O8-NC included N-doped graphitic carbon. FESEM and TEM analyses imaging showed the distribution of the Ni3V2O8 nanoparticles on the layered graphitic carbon structure. TEM images showed the prepared sample has a particle size of around 10-15 nm with an enhanced active site area of 146 m2/g, as demonstrated by BET analysis. Ni3V2O8-NC nanocomposite exhibits magnetic behaviors and a magnetization saturation value of 35.99 emu/g. The electrochemical (EC) studies of the synthesized Ni3V2O8-NC electrode proceeded in an EC workstation of three-electrode. In a 5 M potassium hydroxide as an electrolyte, the cyclic voltmeter exhibited an enhanced capacitance (CS) of 915 F/g at 50 mV/s. Galvanic charge-discharge (GCD) study also exhibited a superior capacitive improvement of 1045 F/g at a current density (It) of 10 A/g. Moreover, the fabricated Ni3V2O8-NC nanocomposite displays a good power density (Pt) of 356.67 W/kg, improved ion accessibility, and substantial charge storage. At the high energy density (Et) of 67.34 W h/kg, the obtained Pt was 285.17 W/kg. The enhanced GCD rate, cycle stability, and Et of the Ni3V2O8-NC magnetic nanocomposite nominate the sample as an excellent supercapacitor electrode. This study paves the way for developing effective, efficient, affordable, and ecologically friendly electrode materials.
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Affiliation(s)
| | - Basheer M. Al-Maswari
- Department of Chemistry, Faculty of Applied Sciences and Humanities, Amran University, Yemen
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysuru- 570005 Karnataka, India
| | - Khaled Alkanad
- Department of Studies in Physics, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - N.K. Lokanath
- Department of Studies in Physics, University of Mysore, Manasagangotri, Mysuru 570 006, India
| | - R.T. Radhika
- Department of Chemistry, Maharani's Science College for Women, University of Mysore, Mysuru, India
| | - B.M. Venkatesha
- Department of Chemistry, Yuvaraja's College, University of Mysore, Mysuru- 570005 Karnataka, India
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8
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Al-Maswari BM, Al-Zaqri N, Alkanad K, AlOstoot FH, Boshaala A, Radhika RT, Venkatesha BM. Magnesium Bismuth Ferrite Nitrogen-Doped Carbon Nanomagnetic Perovskite: Synthesis and Characterization as a High-Performance Electrode in a Supercapacitor for Energy Storage. ACS OMEGA 2023; 8:16145-16157. [PMID: 37179637 PMCID: PMC10173333 DOI: 10.1021/acsomega.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
Bismuth ferrite (BiFeO3) is regarded as an important ABO3 perovskite in the areas of energy storage and electronics. A high-performance novel MgBiFeO3-NC nanomagnetic composite (MBFO-NC) electrode was prepared using a perovskite ABO3-inspired method as a supercapacitor for energy storage. The electrochemical behavior of the perovskite BiFeO3 has been enhanced by magnesium ion doping in the basic aquatic electrolyte as the A-site. H2-TPR revealed that the doping of Mg2+ ions at the Bi3+ sites minimizes the oxygen vacancy content and improves the electrochemical characteristics of MgBiFeO3-NC. Various techniques were used to confirm the phase, structure, surface, and magnetic properties of the MBFO-NC electrode. The prepared sample showed an enhanced mantic performance and specific area with an average nanoparticle size of ∼15 nm. The electrochemical behavior of the three-electrode system was shown by cyclic voltammetry to have a significant specific capacity of 2079.44 F/g at 30 mV/s in 5 M KOH electrolyte. GCD analysis at a 5 A/g current density also showed an enhanced capacity improvement of 2159.88 F/g, which is 3.4× higher than that of pristine BiFeO3. At the power density of 5284.83 W/kg, the constructed MBFO-NC//MBFO-NC symmetric cell showed an exceptional energy density of 730.04 W h/kg. The MBFO-NC//MBFO-NC symmetric cell was employed as a direct practical application of the electrode material to entirely brighten the laboratory panel, which had 31 LEDs. This work proposes the utilization of duplicate cell electrodes made of MBFO-NC//MBFO-NC in portable devices for daily use.
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Affiliation(s)
| | - Nabil Al-Zaqri
- Department
of Chemistry, College of Science, King Saud
University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Khaled Alkanad
- Department
of Studies in Physics, University of Mysore, Manasagangotri, Mysuru, Karnataka 570006, India
| | - Fares Hezam AlOstoot
- Department
of Chemistry, Yuvaraja’s College, University of Mysore, Mysuru, Karnataka 570005, India
| | - Ahmed Boshaala
- Research
Centre, Manchester Salt & Catalysis, Manchester University, Unit C, 88- 90 Chorlton Rd, Manchester M15 4AN, United
Kingdom
- Libyan
Authority for Scientific Research, P.O.
Box 80045, Tripoli, Libya
| | - Rayapura Thimmegowda Radhika
- Department
of Chemistry, Maharani’s Science College for Women, University of Mysore, Mysuru, Karnataka 570005, India
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Estévez Ruiz EP, Lago JL, Thirumuruganandham SP. Experimental Studies on TiO 2 NT with Metal Dopants through Co-Precipitation, Sol-Gel, Hydrothermal Scheme and Corresponding Computational Molecular Evaluations. MATERIALS (BASEL, SWITZERLAND) 2023; 16:3076. [PMID: 37109913 PMCID: PMC10143655 DOI: 10.3390/ma16083076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 06/19/2023]
Abstract
In the last decade, TiO2 nanotubes have attracted the attention of the scientific community and industry due to their exceptional photocatalytic properties, opening a wide range of additional applications in the fields of renewable energy, sensors, supercapacitors, and the pharmaceutical industry. However, their use is limited because their band gap is tied to the visible light spectrum. Therefore, it is essential to dope them with metals to extend their physicochemical advantages. In this review, we provide a brief overview of the preparation of metal-doped TiO2 nanotubes. We address hydrothermal and alteration methods that have been used to study the effects of different metal dopants on the structural, morphological, and optoelectrical properties of anatase and rutile nanotubes. The progress of DFT studies on the metal doping of TiO2 nanoparticles is discussed. In addition, the traditional models and their confirmation of the results of the experiment with TiO2 nanotubes are reviewed, as well as the use of TNT in various applications and the future prospects for its development in other fields. We focus on the comprehensive analysis and practical significance of the development of TiO2 hybrid materials and the need for a better understanding of the structural-chemical properties of anatase TiO2 nanotubes with metal doping for ion storage devices such as batteries.
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Affiliation(s)
- Eduardo Patricio Estévez Ruiz
- Centro de Investigación de Ciencias Humanas y de la Educación (CICHE), Universidad Indoamérica, Ambato 180103, Ecuador
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Universidade da Coruña, 15471 Ferrol, Spain
| | - Joaquín López Lago
- Grupo de Polímeros, Departamento de Física y Ciencias de la Tierra, Escuela Universitaria Politécnica, Universidade da Coruña, 15471 Ferrol, Spain
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10
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Karawek A, Kittipoom K, Tansuthepverawongse L, Kitjanukit N, Neamsung W, Lertthanaphol N, Chanthara P, Ratchahat S, Phadungbut P, Kim-Lohsoontorn P, Srinives S. The Photocatalytic Conversion of Carbon Dioxide to Fuels Using Titanium Dioxide Nanosheets/Graphene Oxide Heterostructure as Photocatalyst. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:320. [PMID: 36678074 PMCID: PMC9860753 DOI: 10.3390/nano13020320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Carbon dioxide (CO2) photoreduction to high-value products is a technique for dealing with CO2 emissions. The method involves the molecular transformation of CO2 to hydrocarbon and alcohol-type chemicals, such as methane and methanol, relying on a photocatalyst, such as titanium dioxide (TiO2). In this research, TiO2 nanosheets (TNS) were synthesized using a hydrothermal technique in the presence of a hydrofluoric acid (HF) soft template. The nanosheets were further composited with graphene oxide and doped with copper oxide in the hydrothermal process to create the copper-TiO2 nanosheets/graphene oxide (CTNSG). The CTNSG exhibited outstanding photoactivity in converting CO2 gas to methane and acetone. The production rate for methane and acetone was 12.09 and 0.75 µmol h-1 gcat-1 at 100% relative humidity, providing a total carbon consumption of 71.70 µmol gcat-1. The photoactivity of CTNSG was attributed to the heterostructure interior of the two two-dimensional nanostructures, the copper-TiO2 nanosheets and graphene oxide. The nanosheets-graphene oxide interfaces served as the n-p heterojunctions in holding active radicals for subsequent reactions. The heterostructure also directed the charge transfer, which promoted electron-hole separation in the photocatalyst.
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Affiliation(s)
- Apisit Karawek
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Kittipad Kittipoom
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Labhassiree Tansuthepverawongse
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Nutkamol Kitjanukit
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Wannisa Neamsung
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Napat Lertthanaphol
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Prowpatchara Chanthara
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Sakhon Ratchahat
- Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Poomiwat Phadungbut
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
| | - Pattaraporn Kim-Lohsoontorn
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Sira Srinives
- Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand
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