Hydrothermal synthesis of Mo-C co-doped TiO2 and coupled with fluorine-doped tin oxide (FTO) for high-efficiency photodegradation of methylene blue and tetracycline: Effect of donor-acceptor passivated co-doping

Niu, Xiaoyou; Yan, Weijing; Shao, Cancan; Zhao, Hongli

doi:10.1016/j.apsusc.2018.10.019

Cited by 46 publications

(15 citation statements)

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“…These observations evidenced that the optical properties of TiO 2 nanoparticles were significantly affected, and it was suggested that doping TiO 2 with Fe or Co may significantly suppress the electron-hole pair recombination [19,30,38,70,71], which can also be favorable for photocatalytic reactions [72,73].…”

Section: Resultsmentioning

confidence: 99%

“…Currently, pure or modified titanium-dioxide nanoparticles are the most extensively used photocatalysts due to the optical and electronic properties of Titania, and their low cost, abundance, chemical stability, and non-toxicity [12,14]. Unfortunately, the photocatalytic efficiency of TiO 2 is still not satisfactory under visible-light irradiation because of its wide band gap (E g ≈ 3.20 eV) [15,16] that allows it to absorb only ultraviolet (UV) wavelengths, making TiO 2 useful for wastewater treatment only in the ultraviolet range of sunlight, which greatly inhibits its industrial application [16,17,18,19,20]. Therefore, several studies focused on the development of visible-responsive TiO 2 photocatalysts either by doping with metal ions and/or non-metal ions or by creation of hetero-junctions with other semiconductors [18,21,22].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

et al. 2019

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Pure TiO2 and Fe- and Co-doped TiO2 nanoparticles (NPs) as photocatalysts were synthesized using wet chemical methods (sol-gel + precipitation). Their crystalline structure and optical properties were analyzed using X-ray diffraction (XRD), Raman spectroscopy and Fourier-transform infrared (FTIR) spectroscopy, ultraviolet-visible light (UV-Vis) diffuse reflectance spectroscopy (DRS), and photoluminescence (PL) spectroscopy. The photocatalytic activity of the synthesized nanoparticles was evaluated through degradation of carbamazepine (CBZ) under UV-A and visible-light irradiations. The XRD and Raman analyses revealed that all synthesized nanomaterials showed only the anatase phase. The DRS results showed that the absorption edge was blue-shifted for Fe-doped TiO2 NPs. The decrease in charge recombination was evidenced from the PL investigation for both Co-doped and Fe-doped TiO2 nanomaterials. An enhancement in photocatalytic degradation of carbamazepine in aqueous suspension under both UV-A light and visible-light irradiations was observed for Fe-doped Titania NPs by comparison with pure TiO2. These results suggest that the doping cations could suppress the electron/hole recombination. Therefore, the photocatalytic activity of TiO2-based nanomaterials was enhanced.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

et al. 2019

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“…This can be attributed to the higher electronegativity of Mo compared to Ti. So far, the substitution of Ti with Mo 5+/6+ leads to a decrease in the electron density of Ti, and it shifts its binding energies to higher values [53,54]. More detailed XPS data are given in Figures S3-S8.…”

Section: Electronic Structurementioning

confidence: 99%

“…Deconvolution of the O 1 s spectral region revealed the existence of three distinguishable peaks (Figure 5c). The first at 529.7 eV can be assigned to the lattice oxygen [53]. The other peak at 530.7 eV can be attributed to the oxygen at the oxygen-deficient regions [26], whereas the third peak at approximately 532.2 eV can be indexed to the surface hydroxyls and adsorbed oxygen species [54].…”

Section: Electronic Structurementioning

confidence: 99%

Microwave-Assisted Solvothermal Synthesis of Mo-Doped TiO2 with Exceptional Textural Properties and Superior Adsorption Kinetics

et al. 2022

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Assigned to their outstanding physicochemical properties, TiO2-based materials have been studied in various applications. Herein, TiO2 doped with different Mo contents (Mo-TiO2) was synthesized via a microwave-assisted solvothermal approach. This was achieved using titanium (IV) butoxide and molybdenum (III) chloride as a precursor and dodecylamine as a surface directing agent. The uniform effective heating delivered by microwave heating reduced the reaction time to less than 30 min, representing several orders of magnitude lower than conventional heating methods. The average particle size ranged between 9.7 and 27.5 nm and it decreased with increasing the Mo content. Furthermore, Mo-TiO2 revealed mesoporous architectures with a high surface area ranging between 170 and 260 m2 g−1, which is superior compared to previously reported Mo-doped TiO2. The performance of Mo-TiO2 was evaluated towards the adsorption of Rhodamine B (RhB). In contrast to TiO2, which revealed negligible adsorption for RhB, Mo-doped samples depicted rapid adsorption for RhB, with a rate that increased with the increase in Mo content. Additionally, Mo-TiO2 expressed enhanced adsorption kinetics for RhB compared to state-of-the-art adsorbents. The introduced synthesis procedure holds a grand promise for the versatile synthesis of metal-doped TiO2 nanostructures with outstanding physicochemical properties.

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“…Moreover, the relatively poor solar efficiency and slow reaction rate further hinder its wide application ,. Consequently, much effort have been devoted to reducing the recombination of photogenerated electron‐hole pairs by extending the light absorption from UV to visible light region . Nowadays, Bi 2 MoO 6 , as a typical aurivillius oxide, has drawn much attention for many photocatalytic reactions because of its ion‐conductive, dielectric, luminescent suitable band gap and photocatalytic properties .…”

Section: Introductionmentioning

confidence: 99%

Room‐Temperature Photocatalytic Decomposition of N₂O over Nanobelt‐Like Bi₂MoO₆

et al. 2019

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A series of nanobelt‐like Bi2MoO6 photocatalysts were design and controllably constructed via a simple hydrothermal approach, and their catalytic performances were investigated for photocatalytic decomposition of N2O for the first time. It was found that Bi2MoO6 synthesized at 170 °C (BM‐170) exhibits the highest photocatalytic activity with 21.7% N2O conversion at 25 °C under UVA irradiation (λ=365 nm) for 12 h, and that the excellent activity should be attributed to its highest content of Oads, strongest absorption capacity for visible light, lowest recombination rate of photo‐generated electron‐hole pairs, and highest separation efficiency for photogenerated charge carriers. Therefore, this study shed new light on the understanding and application of Bi2MoO6 catalysts for photocatalytic decomposition of N2O.

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Hydrothermal synthesis of Mo-C co-doped TiO2 and coupled with fluorine-doped tin oxide (FTO) for high-efficiency photodegradation of methylene blue and tetracycline: Effect of donor-acceptor passivated co-doping

Cited by 46 publications

References 58 publications

Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

Microwave-Assisted Solvothermal Synthesis of Mo-Doped TiO2 with Exceptional Textural Properties and Superior Adsorption Kinetics

Room‐Temperature Photocatalytic Decomposition of N₂O over Nanobelt‐Like Bi₂MoO₆

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Hydrothermal synthesis of Mo-C co-doped TiO2 and coupled with fluorine-doped tin oxide (FTO) for high-efficiency photodegradation of methylene blue and tetracycline: Effect of donor-acceptor passivated co-doping

Cited by 46 publications

References 58 publications

Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

Synthesis of Fe- and Co-Doped TiO2 with Improved Photocatalytic Activity Under Visible Irradiation Toward Carbamazepine Degradation

Microwave-Assisted Solvothermal Synthesis of Mo-Doped TiO2 with Exceptional Textural Properties and Superior Adsorption Kinetics

Room‐Temperature Photocatalytic Decomposition of N2O over Nanobelt‐Like Bi2MoO6

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Room‐Temperature Photocatalytic Decomposition of N₂O over Nanobelt‐Like Bi₂MoO₆