Controlled synthesis and enhanced photoelectro-catalytic activity of a 3D TiO<sub>2</sub> nanotube array/TiO<sub>2</sub> nanoparticle heterojunction using a combined dielectrophoresis/sol–gel method

Bao, Ruiyu; Chen, Chen; Xia, Jianxin; Li, Hua

doi:10.1039/c9tc00568d

Cited by 21 publications

(8 citation statements)

References 62 publications

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“…The 2.8F-La/TiO 2 photocatalyst showed both the highest photocatalytic activity and the photocurrent response as well. This is in agreement with many other authors [19,41,42,43].…”

Section: Resultssupporting

confidence: 94%

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

et al. 2019

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F-La/TiO2 photocatalysts were studied in photocatalytic decomposition water-methanol solution. The structural, textural, optical, and electronic properties of F-La/TiO2 photocatalysts were studied by combination of X-ray powder diffraction (XRD), nitrogen physisorption, Ultraviolet–visible diffuse reflectance spectroscopy (UV-Vis DRS), Electrochemical impedance spectroscopy (EIS), and X-ray fluorescence (XPS). The production of hydrogen in the presence of 2.8F-La/TiO2 was nearly up to 3 times higher than in the presence of pure TiO2. The photocatalytic performance of F-La/TiO2 increased with increasing photocurrent response and conductivity originating from the higher amount of fluorine presented in the lattice of TiO2.

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“…The 2.8F-La/TiO 2 photocatalyst showed both the highest photocatalytic activity and the photocurrent response as well. This is in agreement with many other authors [19,41,42,43].…”

Section: Resultssupporting

confidence: 94%

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

et al. 2019

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“…[ 109 ] A combined dielectrophoresis/sol–gel approach was used to achieve controlled synthesis and increased photoelectrocatalytic activity of 3D TiO 2 nanotube arrays/TiO 2 nanoparticles heterojunction. [ 110 ] This method significantly reduces the time required to prepare 3D‐TNAs/TiO 2 while enhancing electrode material density and particle size uniformity. A staggered bandgap formed when the anatase and rutile phases were combined.…”

Section: Photoelectrocatalytic Removal Of Pollutants From Water By 2d...mentioning

confidence: 99%

mentioning

confidence: 99%

2D and 3D Nanomaterials for Photoelectrocatalytic Removal of Organic Pollutants from Water

Cui

Bao

et al. 2022

Cryst. Res. Technol.

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The presence of organics in water poses a serious risk to the environment, as well as to human health. It is important to develop effective water treatment techniques that are affordable, durable, and sustainable. The removal and degradation of organic matter in water is widely explored using 2D and 3D nanomaterials, which are advantageous in providing high surface to volume ratios and favorably photoelectro activity as compared to traditional materials. The robustness of nano semiconductors has made it highly sustainable in water treatment. This review concentrates on nanostructured materials, which are demonstrating the removal of pollutants from water using various 2D and 3D nanostructured materials as photoelectrocatalytic electrodes. The 2D and 3D nanostructured materials are divided into five types according to physical morphology: nanofilms/nanosheets, nanopore structure/nanonetwork, nanoflowers, nanotubes, and other forms. Apart from this, the preparation method, characterization technology, and photoelectrocatalytic efficiency of organic pollutants degradation are reviewed. Finally, the different factors influencing degradation of organic pollutants are discussed.

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“…To achieve the practical application of this technology, the fabrication of stable and efficient photoelectrodes are desperately needed [10][11][12][13][14][15][16][17]. Three-dimensional TiO 2 nanotube arrays (3D-TiO 2 NTAs) formed on Ti mesh have been recognized as a competitive candidate in the design and fabrication of a photoanode for PEC water splitting owing to its larger internal and external surface areas, efficient charge separation and transportation features, and optimal adhesion with Ti mesh [18][19][20][21][22][23][24][25][26][27][28]. More importantly, the 3D-TiO 2 NTAs on Ti mesh exhibits significant improvement in the utilization efficiency of Ti source compared to the 2D-TiO 2 nanotube arrays formed on Ti foil [18,20,28].…”

Section: Introductionmentioning

confidence: 99%

Black 3D-TiO2 Nanotube Arrays on Ti Meshes for Boosted Photoelectrochemical Water Splitting

Meng

Feng

et al. 2022

Nanomaterials

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Black 3D-TiO2 nanotube arrays are successfully fabricated on the Ti meshes through a facile electrochemical reduction method. The optimized black 3D-TiO2 nanotubes arrays yield a maximal photocurrent density of 1.6 mA/cm2 at 0.22 V vs. Ag/AgCl with Faradic efficiency of 100%, which is about four times larger than that of the pristine 3D-TiO2 NTAs (0.4 mA/cm2). Such boosted PEC water splitting activity primarily originates from the introduction of the oxygen vacancies, which results in the bandgap shrinkage of the 3D-TiO2 NTAs, boosting the utilization efficiency of visible light including the incident, reflected and/or refracted visible light captured by the 3D configuration. Moreover, the oxygen vacancies (Ti3+) can work as electron donors, which leads to the enhanced electronic conductivity and upward shift of the Fermi energy level, and thereby facilitating the transfer and separation of the photogenerated charge carrier at the semiconductor-electrolyte interface. This work offers a new opportunity to promote the PEC water splitting activity of TiO2-based photoelectrodes.

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Controlled synthesis and enhanced photoelectro-catalytic activity of a 3D TiO₂ nanotube array/TiO₂ nanoparticle heterojunction using a combined dielectrophoresis/sol–gel method

Abstract: The surface morphology and particle size of materials can be controlled using DEP technology.

Cited by 21 publications

References 62 publications

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

2D and 3D Nanomaterials for Photoelectrocatalytic Removal of Organic Pollutants from Water

Black 3D-TiO2 Nanotube Arrays on Ti Meshes for Boosted Photoelectrochemical Water Splitting

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Controlled synthesis and enhanced photoelectro-catalytic activity of a 3D TiO2 nanotube array/TiO2 nanoparticle heterojunction using a combined dielectrophoresis/sol–gel method

Abstract: The surface morphology and particle size of materials can be controlled using DEP technology.

Cited by 21 publications

References 62 publications

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

The Role of Fluorine in F-La/TiO2 Photocatalysts on Photocatalytic Decomposition of Methanol-Water Solution

2D and 3D Nanomaterials for Photoelectrocatalytic Removal of Organic Pollutants from Water

Black 3D-TiO2 Nanotube Arrays on Ti Meshes for Boosted Photoelectrochemical Water Splitting

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Controlled synthesis and enhanced photoelectro-catalytic activity of a 3D TiO₂ nanotube array/TiO₂ nanoparticle heterojunction using a combined dielectrophoresis/sol–gel method