Highly Ordered<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mtext>Ti</mml:mtext><mml:mrow><mml:msub><mml:mtext>O</mml:mtext><mml:mtext>2</mml:mtext></mml:msub></mml:mrow></mml:math>Macropore Arrays as Transparent Photocatalysts

Yuan, Dong; Chao, Junfeng; Xie, Zhong; Xu, Xin; Wang, Zhuoran; Chen, Di

doi:10.1155/2012/762510

Cited by 3 publications

(4 citation statements)

References 21 publications

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“…The wide range of applications for TCO films in electronic devices has generated great interest in understanding the growth and characterization of these materials. These applications include flat-panel displays, low-e windows, thin-film solar cells, electrochromic devices, electromagnetic-shielding coatings, antennas for cars, radar protection for fighter planes, and heated windows [180,[270][271][272][273]. Below, we will discuss some of these applications of TiO 2 as an effective TSO material.…”

Section: Applicationsmentioning

confidence: 99%

“…Thin-film transistors or field-effect transistors (FETs) based on TOSs have attracted considerable attention for their good transparency and high field-effect mobility [180,[271][272][273][274]. Most of the high-mobility oxide semiconductors show n-type conduction, and only a limited number of oxides exhibit p-type conduction with acceptable hole mobility.…”

Section: Heterojunction For Transparent Electronicsmentioning

confidence: 99%

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Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

2015

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TiO 2 -based thin films and nanomaterials have been fabricated via physical and solution-based techniques by various research groups around the globe. Generally, most applications of TiO 2 involve photocatalytic activity for water and air purification, self-cleaning surfaces, antibacterial activity, and superhydrophilicity. As a widebandgap semiconductor, modified TiO 2 belongs to a class of materials called transparent semiconducting oxides (TSOs), which are simultaneously optically transparent and electrically conductive. TSOs continue to be in high demand for a variety of applications ranging from transparent electronics and sensor devices to light detecting and emitting devices in telecommunications. However, reports on TiO 2 applications as an effective TSO for transparent electronics applications have been limited. In general, TiO 2 is intrinsically an n-type semiconductor but can be doped to have p-type semiconductivity. This provides a very important opportunity to fabricate all-transparent homojunction devices for light harvesting and energy storage. P-type TSOs have recently attracted tremendous interest in the field of active devices for emerging transparent electronics for potential use in ultra-violet light-based solar cells. Therefore, a detailed overview of the synthesis, band structure modification via doping, properties, and applications of modified TiO 2 as n-and p-type TSOs is warranted. This article comprehensively reviews the latest developments. The discussion includes solution-based wet chemical techniques and vacuum-based dry physical techniques fabricating TiO 2 -TSOs. The synthesis of p-TiO 2 in particular is discussed in detail as it may provide interesting breakthroughs in emerging transparent electronics applications. Also, the structural, optical, and electrical properties of TiO 2 are discussed in the context of TSO applications, specifically the defect chemistry of TiO 2 to obtain n-and p-type semiconductivity, which could provide interesting insights into the band structure engineering of TiO 2 for conductivity reversal. Applications of both nand p-type TiO 2 have been reviewed in detail in relation to thin film transparent homo/heterojunction devices, dyesensitized solar cells, electrochromic displays, and other energy-related applications.

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Section: Applicationsmentioning

confidence: 99%

Section: Heterojunction For Transparent Electronicsmentioning

confidence: 99%

Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

2015

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“…Zheng et al synthesized rutile and anatase TiO 2 mesoporous single crystals with diverse mophologies by silica-templated hydrothermal method [19]. Dong et al prepared highly ordered transparent TiO 2 macropore arrays via a glass-clamping method and investigated the potential application in degradation of organic dyes [20]. However, the general synthesis usually involved complicated multistep to obtain porous skeleton.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characteristics of MacroporousTiO2Photocatalyst

Xing

Jia

et al. 2014

International Journal of Photoenergy

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Macroporous TiO2photocatalyst was synthesized by a facile nanocasting method using polystyrene (PS) spherical particles as the hard template. The synthesized photocatalyst was characterized by transmission electron microscope (TEM), scanning electron microscopy (SEM), thermogravimetry-differential thermogravimetry (TG-DTG), X-ray diffraction (XRD), and N2-sorption. TEM, SEM, and XRD characterizations confirmed that the macroporous TiO2photocatalyst is composed of anatase phase. The high specific surface area of 87.85 m2/g can be achieved according to the N2-sorption analysis. Rhodamine B (RhB) was chosen as probe molecule to evaluate the photocatalytic activity of the TiO2catalysts. Compared with the TiO2materials synthesized in the absence of PS spherical template, the macroporous TiO2photocatalyst sintered at 500°C exhibits much higher activity on the degradation of RhB under the UV irradiation, which can be assigned to the well-structured macroporosity. The macroporous TiO2material presents great potential in the fields of environmental remediation and energy conversion and storage.

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“…At present, there are some methods employed to remove benzene such as microbial degradation [1,2], adsorption [3][4][5][6][7], catalytic oxidation [8][9][10][11][12][13][14], and so forth, among which photocatalytic degradation of benzene by TiO 2 has attracted wide attention [11][12][13][14]. This is because TiO 2 can degrade many toxic substances under mild conditions and cannot cause secondary pollution [15][16][17][18], besides being quite easy to operate, making it become a simple way to remove poisonous gases indoors. But as nano-size TiO 2 powder is inclined to aggregate to clusters and hard to be fixed, if being directly doped into coatings to paint walls or furnitures, it is very easy to fall off.…”

Section: Introductionmentioning

confidence: 99%

Effect Factors of Benzene Adsorption and Degradation by Nano-TiO₂Immobilized on Diatomite

Liu

Kang

2012

Journal of Nanomaterials

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Difference between adsorption of benzene by diatomite and nano-TiO2immobilized on diatomite was investigated. And effects of temperature, light intensity, relative humidity, and initial benzene concentration on adsorption and degradation of benzene by nano-TiO2immobilized on diatomite were also studied. The experimental results showed that when initial benzene concentration was2.2×10−3 mg L−1, it could be degraded to below safe concentration (1.1×10−4 mg L−1) after 50 h when temperature was 20°C, but it just needed 30 h at 35°C. When light intensity was 6750 Lx, it needed 30 h for benzene to be degraded to below safe concentration, but benzene could barely be degraded without light. When relative humidity was 50%, benzene could be degraded to1.0×10−4 mg L−1after 30 h, while its concentration could be reduced to7.0×10−5 mg L−1at the relative humidity of 80%.

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Highly OrderedTiO2Macropore Arrays as Transparent Photocatalysts

Cited by 3 publications

References 21 publications

Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

Fabrication and Characteristics of MacroporousTiO2Photocatalyst

Effect Factors of Benzene Adsorption and Degradation by Nano-TiO₂Immobilized on Diatomite

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Highly OrderedTiO2Macropore Arrays as Transparent Photocatalysts

Cited by 3 publications

References 21 publications

Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

Recent developments in TiO2 as n- and p-type transparent semiconductors: synthesis, modification, properties, and energy-related applications

Fabrication and Characteristics of MacroporousTiO2Photocatalyst

Effect Factors of Benzene Adsorption and Degradation by Nano-TiO2Immobilized on Diatomite

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Product

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Effect Factors of Benzene Adsorption and Degradation by Nano-TiO₂Immobilized on Diatomite