Synthesis and characterization of N-doped TiO 2 nanoparticles and their application in photocatalytic oxidation of dibenzothiophene under visible light

Kalantari, Kaveh; Kalbasi, Mansour; Sohrabi, Morteza; Royaee, Sayed Javid

doi:10.1016/j.ceramint.2016.06.117

Cited by 115 publications

(35 citation statements)

References 69 publications

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“…In the case of Cu-BTC@TiO 2 , the asymmetrical O 1s region could be deconvoluted into two peaks at 532.4 and 530.0 eV. The first peak was also associated with O 2− ions in the Cu-BTC, whereas the second peak was related to Ti-O bonds in TiO 2 on the basis of other XPS results on TiO 2 [41,42]. But the binding energies of pure TiO 2 at 529.5 eV which decreased 0.5 eV in comparison with the binding energies of Cu-BTC@TiO 2 .…”

Section: Resultsmentioning

confidence: 85%

“…The linear relationships obtained confirm the pseudo-first-order reaction kinetics proposed. The reaction equation is expressed as follows [41]: −ln(C/C 0 ) = kt where C 0 and C are the initial and reaction time concentrations of BT/DBT, respectively; k is the apparent rate constant, and t is the desulfurization time. The slope of the linear fitted plot indicates the apparent rate constant for desulfurization.…”

Section: Resultsmentioning

confidence: 99%

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Combining the Photocatalysis and Absorption Properties of Core-Shell Cu-BTC@TiO2 Microspheres: Highly Efficient Desulfurization of Thiophenic Compounds from Fuel

Liu

et al. 2018

Materials

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A core-shell Cu-benzene-1,3,5-tricarboxylic acid (Cu-BTC)@TiO2 was successfully synthesized for photocatalysis-assisted adsorptive desulfurization to improve adsorptive desulfurization (ADS) performance. Under ultraviolet (UV) light irradiation, the TiO2 shell on the surface of Cu-BTC achieved photocatalytic oxidation of thiophenic S-compounds, and the Cu-BTC core adsorbed the oxidation products (sulfoxides and sulfones). The photocatalyst and adsorbent were combined using a distinct core-shell structure. The morphology and structure of the fabricated Cu-BTC@TiO2 microspheres were verified by scanning electron microscopy, high-resolution transmission electron microscopy, energy-dispersive x-ray spectroscopy, X-ray powder diffraction, nitrogen adsorption-desorption and X-ray photoelectron spectroscopy analyses. A potential formation mechanism of Cu-BTC@TiO2 is proposed based on complementary experiments. The sulfur removal efficiency of the microspheres was evaluated by selective adsorption of benzothiophene (BT) and dibenzothiophene (DBT) from a model fuel with a sulfur concentration of 1000 ppmw. Within a reaction time of 20 min, the BT and DBT conversion reached 86% and 95%, respectively, and achieved ADS capacities of 63.76 and 59.39 mg/g, respectively. The BT conversion and DBT conversion obtained using Cu-BTC@TiO2 was 6.5 and 4.6 times higher, respectively, than that obtained using Cu-BTC. A desulfurization mechanism was proposed, the interaction between thiophenic sulfur compounds and Cu-BTC@TiO2 microspheres was discussed, and the kinetic behavior was analyzed.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Combining the Photocatalysis and Absorption Properties of Core-Shell Cu-BTC@TiO2 Microspheres: Highly Efficient Desulfurization of Thiophenic Compounds from Fuel

Liu

et al. 2018

Materials

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“…4 Therefore, an external UV light source is required for their activation, which is not a cost-effective method. However, various hybrid composites synthesized by combining doping of transition metals (Ti, Fe, Ru, Au, and Mo) [8][9][10][11] and/or non-metals (C, N, and S) [12][13][14] can improve the photocatalytic performance, but, high preparation costs, non-renewability, and risks of secondary pollution prevent their large-scale application. Therefore, more and more attention has been applied to giving a stable platform for photocatalytic nanoparticles by incorporating secondary materials, which can improve the recoverability and visible light sensitivity of the photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in biochar-supported photocatalysts: synthesis, role of biochar, and applications

2018

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“…The N-TiO2 was synthesized using a modification procedure in previous study [14] . A determined urea mass was dissolved in water and stirred until complete dissolution.…”

Section: Methodsmentioning

confidence: 99%

Degradation of Methyl Orange Using N-TiO2 Synthesized via Hydrothermal Treatment

Ibrahim¹,

Jasni²,

Ainuddin³

et al. 2018

IJCRSET

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In th is work, urea (0.1 to 1.7 wt.%) is incorporated with TiO2 using hydrothermal treatment for 3 hours at temperatures of 180°C. The influence of urea content on the crystalline TiO2 and their photocatalytic activity are investigated. The samples are characterized by using X-ray diffraction (XRD), energy dispersive Xray (EDX), field emission scanning electron microscope (FESEM) and UV-Visible spectroscopy (UV-Vis). XRD results indicate that all samples are anatase phase while FESEM images shows agglomeration with average grain size approximately of 30 to 46 nm. The photocatalytic activity shows that TiO2 with 0.5 wt.% of urea give the highest performance with 67% degradation after 4 hours visible light irradiation.

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Synthesis and characterization of N-doped TiO 2 nanoparticles and their application in photocatalytic oxidation of dibenzothiophene under visible light

Cited by 115 publications

References 69 publications

Combining the Photocatalysis and Absorption Properties of Core-Shell Cu-BTC@TiO2 Microspheres: Highly Efficient Desulfurization of Thiophenic Compounds from Fuel

Combining the Photocatalysis and Absorption Properties of Core-Shell Cu-BTC@TiO2 Microspheres: Highly Efficient Desulfurization of Thiophenic Compounds from Fuel

Recent progress in biochar-supported photocatalysts: synthesis, role of biochar, and applications

Degradation of Methyl Orange Using N-TiO2 Synthesized via Hydrothermal Treatment

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