Synthesis of N and F co-doped TiO2 nanophotocatalysts for degradation of malathion in water

Dhamaniya, Bhanu Pratap; Kumar, Ashavani; Srivastava, Avanish Kumar; Tawale, J.S.

doi:10.1007/s11164-016-2629-1

Cited by 12 publications

(3 citation statements)

References 33 publications

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“…As to strategy (1) doping with metal [37,38,39,40] and non-metals [41,42,43] has been attempted, as well as surface modification by anchoring dye molecules [44,45,46], quantum dots [36,47], metal nanoparticles [36,47,48,49,50] or also halides species [29].…”

Section: Heterostructures At Tio2 Surface As Organic and Inorganic Sementioning

confidence: 99%

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

et al. 2019

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TiO2-based (nano)materials are widely exploited in systems and devices of actual technological interest, because of their outstanding physical and chemical properties, including chemical stability, long durability, non-toxicity abundance and low cost. For this, they are considered ideal for many practical applications including energy-related devices, photocatalysis, but are known to have some limitations. To improve their performance and then to find more efficient materials in the energy and environmental remediation fields, at first the investigation of the surface/interface properties at the molecular scale is required. In this contribution, a critical review of advances in the field of the TiO2 surface chemistry, highlighting the role of interactions at the molecular level, grafting and assembling/fabrication of suitable heterostructures, is reported. A few case studies, from the H2O, CO2 and acetylene interactions until to the grafting of organic/inorganic systems (graphene, MoS2) at the TiO2 surface, are highlighted. The discussed case studies are argued from their principles to the technological relevance. KeywordsTiO2 photocatalysis H2O, CO2 and C2H2 adsorption Graphene and MoS2/TiO2 hybrids Surface heterostructures IR spectroscopy STM and AFM HR-TEM Electronic spectroscopy Quantum modelling Preliminary remarks: motivation and structure of this review Particles and nanoparticles resulting from the combination of titanium, the second transition element more common in Earth's crust after iron, with oxygen to form TiO2, mainly in the anatase and rutile phases, are used in a wide array of products, devices and technologies. As reported by the Titanium Dioxide Manufacturers Associations (TDMA, https://tdma.info), gathering since 1974 the major producers of this material in Europe, the commercial and research area representing the "first coordination sphere" of the authors of this review, application for TiO2 across the EU, as well as across the globe, include paints, papers, pharmaceuticals, sunscreen and food (where it is listed as colourant E171). As a photocatalyst, titanium dioxide can be added to paints, cements, windows and tiles in order to decompose environmental pollutants, and as a white pigment (in this case called titanium white, Pigment White 6 or CI 77891), TiO2 is one of the most important raw materials for paints and coatings. Moreover, the range of innovative uses for TiO2 keeps on increasing. In recent years, for example, it has been used in the manufacture of cheap and efficient solar cells and building facades that can neutralize air pollution.

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Section: Heterostructures At Tio2 Surface As Organic and Inorganic Sementioning

confidence: 99%

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

et al. 2019

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“…To overcome these problems, several studies have been conducted to modify TiO 2 by doping it with metals and nonmetals. Recently, various works have found that doping of TiO 2 with nonmetals such as carbon (C), iodine (I), nitrogen (N), fluorine (F), and boron (B) enhances the photocatalytic degradation reaction under visible light compared to metals because their impurity states lie close to the valence band edge . Also, nonmetal doping can introduce the defect states, allowing electronic transitions in the visible region and reducing the recombination rate of electrons and holes .…”

Section: Introductionmentioning

confidence: 99%

Characterization of Titanium Dioxide Doped with Nitrogen and Sulfur and its Photocatalytic Appraisal for Degradation of Phenol and Methylene Blue

Syafiuddin

Hadibarata

Zon

et al. 2017

J Chinese Chemical Soc

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The degradation of organic dyes in the presence of modified TiO2 is still under intensive investigation. We report here an evaluation of the photocatalytic activity of nitrogen‐ (N‐) and sulfur‐ (S‐) doped TiO2 for the degradation of phenol and methylene blue (MB). N‐doped TiO2 (N–TiO2), S‐doped TiO2 (S–TiO2), and N–S‐doped TiO2 (N–S–TiO2) were prepared using the sol–gel method. The photocatalytic activity was evaluated in a batch reactor using phenol and MB as models of pollutants. In addition, this investigation was performed using a household lamp as the visible light source. Properties of the synthesized materials in terms of Brunauer–Emmett–Teller (BET) surface analysis, field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), and photocatalytic ability were examined. Our study shows that N–S–TiO2 exhibits better photocatalytic degradation ability for all the considered dyes compared to the other doped TiO2 materials. In conclusion, we have successfully prepared and evaluated the photocatalytic activity of N‐ and S‐doped TiO2 for the degradation of phenol and MB using an ordinary household lamp.

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“…15,19 On the other hand, co-doping two elements in TiO 2 demonstrates remarkable enhancement of photocurrent and photocatalyst effect, such as B and N co-doping, 20 C and N codoping, 21,22 C and F co-doping, 23 N and S co-doping, 24,25 and N and F co-doping. [26][27][28][29][30] Among them, N and F co-doping are particular interesting, because the formation of the impurity levels (ILs) effectively lowering the bulk band, and charge compensation effect between N and F atoms reducing the recombination rate of photogenerated electron-hole pairs. 9…”

Section: Introductionmentioning

confidence: 99%

Electronic and photocatalytic properties of N/F co-doped anatase TiO₂

Zhao

Wang

et al. 2017

RSC Adv.

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Synthesis of N and F co-doped TiO2 nanophotocatalysts for degradation of malathion in water

Cited by 12 publications

References 33 publications

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

Characterization of Titanium Dioxide Doped with Nitrogen and Sulfur and its Photocatalytic Appraisal for Degradation of Phenol and Methylene Blue

Electronic and photocatalytic properties of N/F co-doped anatase TiO₂

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Synthesis of N and F co-doped TiO2 nanophotocatalysts for degradation of malathion in water

Cited by 12 publications

References 33 publications

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

Molecules and heterostructures at TiO2 surface: the cases of H2O, CO2, and organic and inorganic sensitizers

Characterization of Titanium Dioxide Doped with Nitrogen and Sulfur and its Photocatalytic Appraisal for Degradation of Phenol and Methylene Blue

Electronic and photocatalytic properties of N/F co-doped anatase TiO2

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Electronic and photocatalytic properties of N/F co-doped anatase TiO₂