α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

Xie, Juan; Zhang, Lei; Hao, Yajiang; Lian, Yiwei; Li, Zhen; Wei, Yu

doi:10.1016/j.ceramint.2015.03.320

Cited by 37 publications

(10 citation statements)

References 28 publications

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“…Moreover, high iron oxide concentration could lead to the formation of recombination centres, which could also reduce photocatalytic activity [14,17,28] .…”

Section: Photocatalysis Under Natural Sunlightmentioning

confidence: 99%

“…However, at low concentration levels, iron oxide could decrease the recombination rate thanks to charge separation [27,29,30] . For both FeOOH and Fe 2 O 3 , the delocalisation pathway of electron-hole pairs with zinc oxide is still in debate [14,15,19,22,[27][28][29][30][31][32] . We hypothesize the most favourable pathway is the delocalisation of the electrons from ZnO CB to iron oxide CB, leading to a decrease in the recombination rate and an increase in hydroxyl radical production.…”

Section: Photocatalysis Under Natural Sunlightmentioning

confidence: 99%

See 1 more Smart Citation

Improving natural sunlight photocatalytic efficiency of ZnO nanowires decorated by iron oxide cocatalyst via a simple drop method

Pivert

Suo²,

Tang³

et al. 2022

Materials Chemistry and Physics

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“…Moreover, high iron oxide concentration could lead to the formation of recombination centres, which could also reduce photocatalytic activity [14,17,28] .…”

Section: Photocatalysis Under Natural Sunlightmentioning

confidence: 99%

Section: Photocatalysis Under Natural Sunlightmentioning

confidence: 99%

Improving natural sunlight photocatalytic efficiency of ZnO nanowires decorated by iron oxide cocatalyst via a simple drop method

Pivert

Suo²,

Tang³

et al. 2022

Materials Chemistry and Physics

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“…As seen in Figure 1, it can be noticed that all the peaks of pure 2D α-Fe 2 O 3 nanosheets showed the typical characteristic diffraction peaks of α-Fe 2 O 3 phase, which are at 24. [29,30]. For the pure 2D g-C 3 N 4 , two diffraction peaks appearing at 13.2 • and 27.8 • were observed, which can be attributed to the (100) and (002) diffraction planes respectively (JCPDS No.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Ultrasonic-Assisted Synthesis of 2D α-Fe2O3@g-C3N4 Composite with Excellent Visible Light Photocatalytic Activity

et al. 2018

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In this study, α-Fe2O3@g-C3N4 photocatalyst was synthesized using an ultrasonic assisted self-assembly preparation method. The α-Fe2O3@g-C3N4 photocatalyst had a stronger optical absorption in the visible light region than pure graphitic carbon nitride (g-C3N4). The Z-Scheme heterojunction between α-Fe2O3 and g-C3N4 significantly inhibited the recombination of electrons and holes. The photocatalytic performances of α-Fe2O3@g-C3N4 photocatalyst were excellent in degradation of Rhodamine B (RhB) under visible light irradiation. The results indicated that 5 wt.% α-Fe2O3/g-C3N4 had the optimal photocatalytic activity because two-dimension (2D) α-Fe2O3 nanosheets can be well-dispersed on the surface of g-C3N4 layers by ultrasonic assisted treatment. A possible photocatalytic mechanism is also discussed.

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“…The transfer of holes from ZnO to α-Fe 2 O 3 must be higher when compared with the individual metal oxides. This may be due to the efficient production of the charge carriers based on the strong interaction between the α-Fe 2 O 3 and ZnO heterostructures, which reduces the photogenerated charge recombination rate, thus improving the photocatalytic activity [25]. In order to increase the holes in α-Fe 2 O 3 and ZnO, H 2 O 2 is used as an oxidizing agent to produce OH radicals.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Assembly of ZnO Nanoparticles on SiO2@α-Fe2O3 Nanocomposites for an Efficient Photo-Fenton Reaction

et al. 2018

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The SiO2@α-Fe2O3/ZnO metal oxide nanocomposites employed in this study were obtained using the sol-gel method. Their photocatalytic activities were enhanced by photo-Fenton reactions. The metal oxide composite of ZnO and α-Fe2O3 nanoparticles were deposited on the SiO2 nanospheres intended for visible light photocatalysis. Further, the as-synthesized SiO2@α-Fe2O3/ZnO nanocomposites exhibited a robust crystallinity and a high adsorption of dye molecules when compared to SiO2@ZnO and SiO2@α-Fe2O3 nanocomposites, respectively. The experimental results demonstrated a rapid Methylene Blue (MB) degradation among these catalysts within short intervals of time with the addition of α-Fe2O3/ZnO mixed metal oxide catalysts on the SiO2 nanospheres. Finally, a photo-Fenton reaction was implemented to confirm the presence of the hydroxyl (OH) radicals, which are powerful agents used for the degradation of organic pollutants.

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α-Fe2O3 modified ZnO flower-like microstructures with enhanced photocatalytic performance for pentachlorophenol degradation

Cited by 37 publications

References 28 publications

Improving natural sunlight photocatalytic efficiency of ZnO nanowires decorated by iron oxide cocatalyst via a simple drop method

Improving natural sunlight photocatalytic efficiency of ZnO nanowires decorated by iron oxide cocatalyst via a simple drop method

Ultrasonic-Assisted Synthesis of 2D α-Fe2O3@g-C3N4 Composite with Excellent Visible Light Photocatalytic Activity

Assembly of ZnO Nanoparticles on SiO2@α-Fe2O3 Nanocomposites for an Efficient Photo-Fenton Reaction

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