Gd, C, N and P quaternary doped anatase-TiO2 nano-photocatalyst for enhanced photocatalytic degradation of 4-chlorophenol under simulated sunlight irradiation

Wang, Hongtao; Jiang, Hongquan; Zang, Shuying; Li, Jingshen; Wang, Qiaofeng

doi:10.1016/j.jallcom.2013.10.092

Cited by 62 publications

(16 citation statements)

References 33 publications

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“…6a, it can be found that there are two new absorption peaks appearing at around 1000 cm À1 and 596 cm À1 in the FTIR spectrum of P-BiOI. The absorption peak at around 1000 cm À1 and 596 cm À1 may be aroused by the stretching vibration, 28,31,32 and the bending vibrations of PO 4 3À , [33][34][35] respectively. It could be deduced that P species in the P-BiOI may be existed in the form of the pentavalent oxidation state (P 5+ ).…”

Section: Ft-ir Analysismentioning

confidence: 99%

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Yao

Zhang

et al. 2017

RSC Adv.

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Section: Ft-ir Analysismentioning

confidence: 99%

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Yao

Zhang

et al. 2017

RSC Adv.

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“…No relationship was observed between the surface area and the concentration of a second dopant cation, however, when W or Mo is incorporated in a small amount (0.33 wt.%) by co-doping (DW1.7M0.3 and DW0.3M1.7 samples), the specific surface area increases by approximately 15% with respect to mono-doped TiO 2 . High surface areas may offer more adsorption sites for photocatalytic reactions, which could result in better photoactivity [32]. Additionally, the average pore diameter of the co-doped catalysts remained constant (5.6 nm) and with a value between that of the mono-doped catalysts (4.6 nm and 6.1 nm), with the exception of sample DW1M1 that exhibited the highest average pore diameter of 6.6 nm and the maximum pore volume of 0.391 cm 3 /g.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity of Titania by Co-Doping with Mo and W

et al. 2018

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Various W and Mo co-doped titanium dioxide (TiO2) materials were obtained through the EISA (Evaporation-Induced Self-Assembly) method and then tested as photocatalysts in the degradation of 4-chlorophenol. The synthesized materials were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy (RS), N2 physisorption, UV-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The results showed that the W-Mo-TiO2 catalysts have a high surface area of about 191 m2/g, and the presence of an anatase crystalline phase. The co-doped materials exhibited smaller crystallite sizes than those with one dopant, since the crystallinity is inhibited by the presence of both species. In addition, tungsten and molybdenum dopants are distributed and are incorporated into the anatase structure of TiO2, due to changes in red parameters and lattice expansion. Under our experimental conditions, the co-doped TiO2 catalyst presented 46% more 4-chlorophenol degradation than Degussa P25. The incorporation of two dopant cations in titania improved its photocatalytic performance, which was attributed to a cooperative effect by decreasing the recombination of photogenerated charges, high radiation absorption capacity, high surface areas, and low crystallinity. When TiO2 is co-doped with the same amount of both cations (1 wt.%), the highest degradation and mineralization (97% and 74%, respectively) is achieved. Quinones were the main intermediates in the 4-chlorophenol oxidation by W-Mo-TiO2 and 1,2,4-benzenetriol was incompletely degraded.

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“…More recently, in order to further improve the photocatalytic performance of TiO 2 catalysts, nonmetallic and rare earth metals co‐doped TiO 2 catalysts have been extensively investigated . Liu et al .…”

Section: Introductionmentioning

confidence: 99%

Effects of Rare Earth Elements and Nitrogen Co‐Doped on the Photocatalytic Performance of TiO₂

Bao

Wang

et al. 2018

Crystal Research and Technology

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Titanium dioxide (TiO2), which is codoped with nine different rare earth mental ions (RE3+ = lanthanum (La3+), cerium (Ce3+), praseodymium (Pr3+), neodymium (Nd3+), samarium (Sm3+), gadolinium (Gd3+), erbium (Er3+), ytterbium (Yb3+), lutetium (Lu3+)) and nitrogen (N), are synthesized by non‐hydrolytic sol‐gel method under different calcination temperatures. The morphology, structure and performance of as‐prepared samples are characterized by X‐ray diffraction (XRD), scanning electron microscope (SEM), X‐ray photoelectron spectroscopy (XPS), UV‐vis diffuse reflectance spectroscopy (DRS) and ultraviolet‐visible absorption spectroscopy. The results indicat that co‐doping can inhibit the particles growth significantly and extend light‐absorption to the visible region. Nd/N and Pr/N co‐doped TiO2 (calcining temperature at 380 °C) exhibit superior photocatalytic activity toward methyl orange (MO) degradation under visible light irradiation for 150 min, the degradation rate of MO solution are approximately 91 and 89% respectively. By comparison, the degradation rate are only 43 and 7% for the N‐TiO2 and pure TiO2 respectively.

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Gd, C, N and P quaternary doped anatase-TiO2 nano-photocatalyst for enhanced photocatalytic degradation of 4-chlorophenol under simulated sunlight irradiation

Cited by 62 publications

References 33 publications

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Enhanced Photocatalytic Activity of Titania by Co-Doping with Mo and W

Effects of Rare Earth Elements and Nitrogen Co‐Doped on the Photocatalytic Performance of TiO₂

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Gd, C, N and P quaternary doped anatase-TiO2 nano-photocatalyst for enhanced photocatalytic degradation of 4-chlorophenol under simulated sunlight irradiation

Cited by 62 publications

References 33 publications

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Unique band structure enhanced visible light photocatalytic activity of phosphorus-doped BiOI hierarchical microspheres

Enhanced Photocatalytic Activity of Titania by Co-Doping with Mo and W

Effects of Rare Earth Elements and Nitrogen Co‐Doped on the Photocatalytic Performance of TiO2

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Effects of Rare Earth Elements and Nitrogen Co‐Doped on the Photocatalytic Performance of TiO₂