Preparation, characterization of P-doped TiO2 nanoparticles and their excellent photocatalystic properties under the solar light irradiation

Lv, Yingying; Yu, Leshu; Huang, Haihong; Liu, Hailong; Feng, Yuying

doi:10.1016/j.jallcom.2009.08.116

Cited by 147 publications

(51 citation statements)

References 43 publications

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“…In the deconvolution of the Ti 2p spectra of the ATN, the two evident peaks at 458.8 eV (Ti 2p 3/2 ) and 464.5 eV (Ti 2p 1/2 ) reveal the presence of Ti atoms in the 4 + oxidation in the ATN. [36] The Ti 2p spectra of the ATN-BP and Pd/ ATN-BP hybrids are different from that of the ATN. The peak at ≈460.2 eV corresponds to the TiO bonds, which resulted from the reaction of the ATN and BP during the ball-milling process, further supporting the presence of TiOP bonds in ATN-BP.…”

Section: Resultsmentioning

confidence: 97%

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Fan

et al. 2017

Advanced Energy Materials

168

129

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Designing high‐performance palladium (Pd) supports with enhanced ethanol oxidation reaction (EOR) activity has consistently been a challenge. Here, a novel anatase titanium dioxide nanosheets‐black phosphorus (ATN‐BP) hybrid is fabricated as a support for Pd nanoparticles used in the EOR. The direct ball‐milling of BP nanoflakes and ATN under argon protection lead to the formation of ATN‐BP hybrids with BP nanoflakes interconnected by cataclastic ATN with POTi bonds. The structure of ATN‐BP not only is beneficial for improving the electrolyte penetration and electron transportation but also has a strong influence on the stripping of reactive intermediates through the synergistic interaction between Pd and ATN‐BP. The results demonstrate that the Pd/ATN‐BP hybrids with heterointerfaces of Pd, BP, and ATN exhibit ultrahigh electroactivity and durability. In the EOR, the Pd/ATN‐BP catalyst can achieve an electrochemically active surface area of ≈462.1 m2 gPd−1 and a mass peak current density of 5023.8 mA mgPd−1, which are 11.67 and 6.87 times greater, respectively, than those of commercial Pd/C. The Pd/ATN‐BP catalysts also show remarkable stability with a retention rate of the peak current density of ≈30.6% after a durability test of 3600 s.

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Section: Resultsmentioning

confidence: 97%

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Fan

et al. 2017

Advanced Energy Materials

168

129

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“…One of the most effective methods involves doping TiO 2 crystals with impurities including transition metals, such as V [2], Mo [3], Fe [4][5][6], Co [7,8], Pt [9], Au [10], and nonmetals such as N [11,12], F [13], P [14], S [15]. Among these impurity elements, the radius of Fe 3+ (0.64Å) is similar to that of Ti 4+ (0.68Å) and is therefore easily incorporated into the TiO 2 crystal [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Fe Concentration on Fe-Doped Anatase TiO₂from GGA +UCalculations

Lin

2012

International Journal of Photoenergy

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To comprehend the photocatalytic mechanisms of anatase Ti 1−x Fe x O 2 with various concentrations of Fe, this study performed first principles calculations based on density functional theory with Hubbard U on-site correction to evaluate the crystal structure, impurity formation energy, and electronic structure. We adopted the effective Hubbard U values of 8.47 eV for Ti 3d and 6.4 eV for Fe 3d. The calculations show that higher concentrations of Fe are easily formed in anatase TiO 2 due to a reduction in the formation energy. The band gap of Fe-doped TiO 2 decreases Fe doping level increases as a result of the overlap among the Fe 3d, Ti 3d, and O 2p states, which enhances photocatalytic activity in the visible light region. Additionally, a broadening of the valence band and Fe impurity states within the band gap might also contribute to the photocatalytic activity.

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“…Moreover, it has good chemical stability, non-toxicity, and long-term photostability [160][161][162]. The wide band gap (Eg [ 3.2 eV) of TiO 2 limits its potential, because only high energy light in the UV region with wavelengths \387 nm can instigate the electron-hole separation process [156,163].…”

Section: Titanium Dioxide As Photocatalystsmentioning

confidence: 99%

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

Elumalai

Chellappan

Jose

et al. 2015

Mater Renew Sustain Energy

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The present review rationalizes the significance of the metal oxide semiconductor (MOS) interfaces in the field of photovoltaics and photocatalysis. This perspective considers the role of interface science in energy harvesting using organic photovoltaics (OPVs) and dye-sensitized solar cells (DSSCs). These interfaces include large surface area junctions between photoelectrodes and dyes, the interlayer grain boundaries within the photoanodes, and the interfaces between photoactive layers and the top and bottom contacts. Controlling the collection and minimizing the trapping of charge carriers at these boundaries is crucial to overall power conversion efficiency of solar cells. Similarly, MOS photocatalysts exhibit strong variations in their photocatalytic activities as a function of band structure and surface states. Here, the MOS interface plays a vital role in the generation of OH radicals, which forms the basis of the photocatalytic processes. The physical chemistry and materials science of these MOS interfaces and their influence on device performance are also discussed.

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Preparation, characterization of P-doped TiO2 nanoparticles and their excellent photocatalystic properties under the solar light irradiation

Cited by 147 publications

References 43 publications

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Effect of Fe Concentration on Fe-Doped Anatase TiO₂from GGA +UCalculations

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

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Preparation, characterization of P-doped TiO2 nanoparticles and their excellent photocatalystic properties under the solar light irradiation

Cited by 147 publications

References 43 publications

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Palladium Nanoparticles Anchored on Anatase Titanium Dioxide‐Black Phosphorus Hybrids with Heterointerfaces: Highly Electroactive and Durable Catalysts for Ethanol Electrooxidation

Effect of Fe Concentration on Fe-Doped Anatase TiO2from GGA +UCalculations

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

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Effect of Fe Concentration on Fe-Doped Anatase TiO₂from GGA +UCalculations