Transition metal ions effect on the properties and photocatalytic activity of nanocrystalline TiO2 prepared in an ionic liquid

Ghasemi, Shahnaz; Rahimnejad, Sara; Setayesh, Shahrbanoo Rahman; Rohani, Sohrab; Gholami, Majid

doi:10.1016/j.jhazmat.2009.08.029

Cited by 172 publications

(92 citation statements)

References 27 publications

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“…The absence of this reflex in the diffraction patterns of calcined powders indicates the disordering of organized structure in the process of titanium dioxide crystallization. Investigation of the nitrogen adsorption-desorption isotherms at -196 °C and the pore size distribution for the powders calcined at 450 °C showed that a mesoporous structure was formed with the average pore size of 2. , and Cu 2+ ionic radii (68, 69, 72, 80 and 72 pm, respectively) allows the interstitial incorporation of the dopant into the anatase lattice [9,10]. The diffraction peaks in the XRD patterns of films calcined at 400 °C can be attributed to anatase.…”

Section: Resultsmentioning

confidence: 99%

Sol-Gel Synthesis and Characterization of Mesoporous TiO2 Modified with Transition Metal Ions (Co, Ni, Mn, Cu)

Kelyp¹,

Petrik²,

Vorobets³

et al. 2015

Him. Fiz. Tehnol. Poverhni

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Section: Resultsmentioning

confidence: 99%

Sol-Gel Synthesis and Characterization of Mesoporous TiO2 Modified with Transition Metal Ions (Co, Ni, Mn, Cu)

Kelyp¹,

Petrik²,

Vorobets³

et al. 2015

Him. Fiz. Tehnol. Poverhni

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“…Doping TiO 2 with transition metals is an efficient method to extend the absorption of TiO 2 into the visible region and increasing its photocatalytic activity (Tain et al 2012). Hence, researchers have doped many transition metals like Cr, Mn, Co, Mo, Ni, Cu and Zn into TiO 2 to modify its band gap and photocatalytic activity (Zaleska 2008;Ghasemi et al 2009). There are many methods available to synthesize undoped and doped TiO 2 photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Study of photocatalytic degradation of environmentally harmful phthalate esters using Ni-doped TiO2 nanoparticles

Singla

Pandey

Singh

2015

Int. J. Environ. Sci. Technol.

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Undoped and Ni-doped TiO 2 nanoparticles are synthesized using sol-gel technique. The physical, structural, optical and thermal properties of the samples are investigated using X-ray powder diffraction, Fourier transform infrared spectroscopy, transmittance electron microscopy, UV-visible diffuse reflectance and thermogravimetric analysis. The photocatalytic activity of the samples is investigated by the photocatalytic degradation of phthalate esters. Phthalate esters have been considered as endocrine disrupting compounds. Nidoped TiO 2 samples show better photocatalytic activity as compared to undoped TiO 2 sample. The greater photocatalytic activity of doped samples as compared to undoped TiO 2 can be attributed to the production of more number of electron-hole pairs in doped samples.

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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]. Therefore, developing a photocatalyst that can efficiently harness the energy from natural sunlight, i.e., from the visible region, is one of the major challenges in this field [164].…”

Section: Titanium Dioxide As Photocatalystsmentioning

confidence: 99%

“…Metal ions of noble metals (Pt, Pd, Ag, and Au) [166] and transition metals (Cr, Cu, Mn, Zn, Co, Fe, and Ni) [167] are used as dopants [168]. Even non-metals such as C, N, S, and P are used for this purpose [160,161,163,169]. Transition metals are used as an alternative to noble metals to reduce the cost.…”

Section: Titanium Dioxide As Photocatalystsmentioning

confidence: 99%

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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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Transition metal ions effect on the properties and photocatalytic activity of nanocrystalline TiO2 prepared in an ionic liquid

Cited by 172 publications

References 27 publications

Sol-Gel Synthesis and Characterization of Mesoporous TiO2 Modified with Transition Metal Ions (Co, Ni, Mn, Cu)

Sol-Gel Synthesis and Characterization of Mesoporous TiO2 Modified with Transition Metal Ions (Co, Ni, Mn, Cu)

Study of photocatalytic degradation of environmentally harmful phthalate esters using Ni-doped TiO2 nanoparticles

Metal oxide semiconducting interfacial layers for photovoltaic and photocatalytic applications

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