Photocatalytic degradation of organic compounds in aqueous systems by transition metal doped polycrystalline TiO2

Paola, A. Di; García‐López, Elisa I.; Ikeda, Shigeru; Marcı̀, Giuseppe; Ohtani, Bunsho; Palmisano, Leonardo

doi:10.1016/s0920-5861(02)00048-2

Cited by 290 publications

(151 citation statements)

References 20 publications

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“…[12][13][14][15] and transition metals (TM) like Cu, Fe, Co, Ni, etc. [16][17][18]. It has been established by extensive researches that doping may apparently improve the photocatalysis, electrical, and optical properties of TiO 2 [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Structural, optical, and magnetic study of Ni-doped TiO2 nanoparticles synthesized by sol–gel method

et al. 2018

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In this research, the effects of transition metal (Ni) doping to metal-oxide nanoparticles (TiO 2 ) were studied. Various weight ratios (5, 10, 15, and 20%) of Ni-to-TiO 2 nanoparticles were synthesized using the sol-gel technique. These doped nanoparticles were prepared using titanium butoxide and nickel nitrate as precursors and methanol as a solvent. The effects of Ni doping to TiO 2 were examined using a variety of characterization techniques, X-ray diffraction (XRD), Fourier-transform-infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, field-emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM). The XRD reveals that the Ni-doped TiO 2 crystallizes in a tetragonal structure with anatase phase. The particle size and lattice strain were calculated by Williamson-Hall equation. The presence of strong chemical bonding and functional groups at the interface of TiO 2 nanoparticles was confirmed by FTIR. The optical properties of undoped and doped samples were recorded by UV-Vis spectroscopy. The saturation magnetization (M s ) was found higher for undoped as compared to doped samples. The surface morphology and the element structure of the Ni-doped TiO 2 nanoparticles were examined by FESEM.

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Section: Introductionmentioning

confidence: 99%

Structural, optical, and magnetic study of Ni-doped TiO2 nanoparticles synthesized by sol–gel method

et al. 2018

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“…TiO 2 has been shown to be the most suitable photocatalyst because it is cheap, nontoxic, and chemically stable [6][7][8][9]. It is well known that semiconductor photocatalysis is based on the surface trapping of light-generated charges, which induce interfacial electron transfer reactions with a great variety of substrates.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Zhang

Shi

Zhao

et al. 2013

Applied Surface Science

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“…TiO 2 was first reported to exhibit photocatalytic (PC) behaviour when it was used for the splitting of water under ultraviolet illumination in 1972 [11]. Titania is nontoxic and has high chemical and thermal stability [12]. The interaction of TiO 2 with light with wavelengths of 388 nm or below leads to the excitation of carriers which then oxidize and/or reduce water and oxygen molecules adsorbed onto the surface.…”

Section: Tio 2 Antifouling and Photocatalytic Activitymentioning

confidence: 99%

Titania‐based photocatalytic coatings on stainless steel hospital fixtures

Krumdieck

Lee³

et al. 2015

Phys. Status Solidi C

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A scaled-up pulsed-pressure MOCVD system was used to deposit TiO 2 coatings from tetra-isopropoxide precursor solution on stainless steel substrates and on 3-D objects. The objective of the work is the production of antimicrobial coatings for handles in health care facilities. Antimicrobial coatings are sought to manage the transmission of hospital acquired infections (HAI's), which are reported to cost around one million pounds per annum in the UK alone. Titania is a promising material for this application due to the photocatalytic production of reactive oxygen species that are crucial for the destruction of organic pathogens.TiO 2 coatings of 0.2 to 13 µm thickness were deposited at temperatures between 375 o C and 475 o C. The crystallite size and photocatalytic activity are influenced by deposition temperature. No dependence of stoichiometry on the deposition temperature has been observed. The films on stainless steel exhibit reasonably good photocatalytic performance. The photocatalytic performance and the stoichiometry improve with the film thickness. A three dimensional object (door handle) was coated with good conformity. The reactor scale-up for coating production on door handles is proposed for future wear and hygiene performance testing.

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Photocatalytic degradation of organic compounds in aqueous systems by transition metal doped polycrystalline TiO2

Cited by 290 publications

References 20 publications

Structural, optical, and magnetic study of Ni-doped TiO2 nanoparticles synthesized by sol–gel method

Structural, optical, and magnetic study of Ni-doped TiO2 nanoparticles synthesized by sol–gel method

Photocatalytic activity for H2 evolution of TiO2 with tuned surface crystalline phase

Titania‐based photocatalytic coatings on stainless steel hospital fixtures

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