Carbon/nitrogen-doped TiO2: New synthesis route, characterization and application for phenol degradation

Abdullah, Aboubakr M.; Al‐Thani, Noora; Tawbi, Khouloud; Al-Kandari, H.

doi:10.1016/j.arabjc.2015.04.027

Cited by 81 publications

(47 citation statements)

References 25 publications

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“…In the high resolution spectra of Ti 2p spectra shown in Figure 1D , peaks at 459.2 and 465 eV corresponds to the spin orbit coupling of Ti2P 3/2 and Ti2P 1/2 , respectively. It also shows that only the signals corresponding to Ti 4+ were detected and can be attributed to the binding energy separation between the 2p 1/2 and 2p 3/2 peaks of ~5.8 eV (Abdullah et al, 2016 ). Furthermore, the Ti 2p XPS peak of un-doped TiO 2 has been reported to appear normally at 459.5 eV (Saha and Tomkins, 1992 ).…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of 4-Nitrophenol by C, N-TiO2: Degradation Efficiency vs. Embryonic Toxicity of the Resulting Compounds

et al. 2018

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The photocatalytic activity of TiO2 based photocatalysts can be improved by structural modification and elemental doping. In this study, through rational design, one type of carbon and nitrogen co-doped TiO2 (C, N-TiO2) photocatalyst with mesoporous structure was synthesized with improved photocatalytic activity in degrading 4-nitrophenol under simulated sunlight irradiation. The photocatalytic degradation efficiency of the C, N-TiO2 was much higher than the anatase TiO2 (A-TiO2) based on absorbance and HPLC analyses. Moreover, using zebrafish embryos, we showed that the intermediate degradation compounds generated by photocatalytic degradation of 4-nitrophenol had higher toxicity than the parent compound. A repeated degradation process was necessary to render complete degradation and non-toxicity to the zebrafish embryos. Our results demonstrated the importance of evaluating the photocatalytic degradation efficiency in conjunction with the toxicity assessment of the degradation compounds.

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Section: Resultsmentioning

confidence: 99%

Photocatalytic Degradation of 4-Nitrophenol by C, N-TiO2: Degradation Efficiency vs. Embryonic Toxicity of the Resulting Compounds

et al. 2018

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“…Nowadays, advanced photocatalysis semiconductors have received extensive attention in the environmental fields because of their huge potential, for example in the removal of organic pollutants, and to deodorize and purify polluted air and water as well as used for solar water splitting [ 79 , 80 , 81 , 82 , 83 , 84 , 85 , 86 , 87 , 88 , 89 , 90 ]. Among many studied photocatalysis semiconductors, mesoporous TiO 2 is a one of the most preferable materials because of its continuous particle framework, high quantum efficiency, high surface area, nanocrystallinity, long-term stability and non-toxicity.…”

Section: Applicationmentioning

confidence: 99%

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Niu

Wang

et al. 2018

Materials

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Mesoporous materials are materials with high surface area and intrinsic porosity, and therefore have attracted great research interest due to these unique structures. Mesoporous titanium dioxide (TiO2) is one of the most widely studied mesoporous materials given its special characters and enormous applications. In this article, we highlight the significant work on mesoporous TiO2 including syntheses and applications, particularly in the field of photocatalysis, energy and biology. Different synthesis methods of mesoporous TiO2—including sol–gel, hydrothermal, solvothermal method, and other template methods—are covered and compared. The applications in photocatalysis, new energy batteries and in biological fields are demonstrated. New research directions and significant challenges of mesoporous TiO2 are also discussed.

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“…Many semiconductors have been studied in the heterogeneous photo catalysis in order to degrade pollutants in water bodies (ZnO, CdO, TiO 2 , Fe 2 O 3 , among others). Among these, TiO 2 stands out as the most used photo catalyst due to its highly chemical stability, nontoxic, band gap of 3.2 eV for UV radiation (natural/artificial), and relatively low cost [10][11][12][13]. However, since its band gap is 3.2 eV, the highest efficiency of the process is limited by the absorption of the TiO 2 semiconductor with a radiation of over 385 nm, which corresponds to approximately 3% of the solar spectrum at sea level.…”

Section: Introductionmentioning

confidence: 99%

Experimental Design and Optimization of Triclosan and 2.8-Diclorodibenzeno-p-dioxina Degradation by the Fe/Nb2O5/UV System

et al. 2019

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This study describes the experimental design and optimization of the photocatalytic reaction using the immobilized catalyst Fe/Nb2O5 in the degradation of Triclosan and 2.8-DCDD. The techniques employed to characterize the photocatalysts were: specific surface area, average pore volume, average pore diameter, photo-acoustic spectroscopy (PAS), X-ray diffraction (XRD), and scanning electron microscopy (SEM/EDS). The reaction parameters studied were pH, catalyst concentration, catalyst calcination temperature, and nominal metallic charge. The results indicated that the immobilized Fe/Nb2O5 catalysts were efficient in the degradation of Triclosan and 2.8-dichlorodibenzene-p-dioxin. The catalysts with nominal metal loading of 1.5% Fe calcined at 873 K showed the highest constant reaction rate and the lowest half-life 0.069 min−1 and 10.04 min. Tests in different matrices indicated that the photocatalytic reaction using aqueous solution containing Cl− is faster when compared with the ultrapure water matrix.

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Carbon/nitrogen-doped TiO2: New synthesis route, characterization and application for phenol degradation

Cited by 81 publications

References 25 publications

Photocatalytic Degradation of 4-Nitrophenol by C, N-TiO2: Degradation Efficiency vs. Embryonic Toxicity of the Resulting Compounds

Photocatalytic Degradation of 4-Nitrophenol by C, N-TiO2: Degradation Efficiency vs. Embryonic Toxicity of the Resulting Compounds

Mesoporous Titanium Dioxide: Synthesis and Applications in Photocatalysis, Energy and Biology

Experimental Design and Optimization of Triclosan and 2.8-Diclorodibenzeno-p-dioxina Degradation by the Fe/Nb2O5/UV System

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