Photo-induced properties of photocatalysts: A study on the modified structural, optical and textural properties of TiO2–ZnAl layered double hydroxide based materials

Hadnadjev-Kostic, Milica; Vulic, Tatjana; Marinković‐Nedučin, R.; Lončarević, Davor; Dostanić, Jasmina; Markov, Siniša; Jovanović, D.

doi:10.1016/j.jclepro.2017.06.091

Cited by 64 publications

(23 citation statements)

References 87 publications

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“…The UV-Vis diffuse reflectance spectrum for the ZnAl LDH shows a weak absorption peak in the spectral region of 200-400 nm, which is due to the electronic transition of ZnAl LDH from the O-2p state to the metal ns or np levels (n = 4 for Zn and n = 3 for Al) [20]. The low absorption ability of ZnAl LDH indicates the low photocatalytic activity, which was also observed by other authors [30,31]. The CoZnAl LDH samples display two distinct absorption features, a strong absorption band in the ultraviolet light range and a broad band in the visible region centered around 500 nm attributable to d-d transitions of octahedral Co 2+ within the CoZnAl LDH layer [28,32].…”

Section: Characterization Of Samplessupporting

confidence: 76%

Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+

Fan

Qin

et al. 2018

Bull. Chem. React. Eng. Catal.

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Co-doped ZnAl layered double hydroxides (LDH) were papered by coprecipitation. The prepared samples were characterized by multiple techniques including X-ray Diffraction (XRD), Brunauer−Emmett−Teller (BET) surface area, Scanning Electronic Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and UV−Vis Diffuse-Reflectance Spectroscopy (UV−Vis DRS). The incorporation of Co2+ into the ZnAl LDH sheets as CrO6 octahedron forms a new energy level which contributes for the excitation of electrons under visible light. The doped Co2+ at a reasonable content also serves as photo-generated charges separator and improves the visible light photocatalytic activity of ZnAl LDH. A degradation mechanism based on the hydroxyl radical as the active species was proposed. Copyright © 2018 BCREC Group. All rights reservedReceived: 3rd February 2018; Revised: 8th July 2018; Accepted: 13rd July 2018How to Cite: Li, D., Fan, L., Qi, M., Shen, Y., Liu, D., Li, S. (2018). Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+. Bulletin of Chemical Reaction Engineering & Catalysis, 13 (3): 502-511 (doi:10.9767/bcrec.13.3.2168.502-511)Permalink/DOI: https://doi.org/10.9767/bcrec.13.3.2168.502-511

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Section: Characterization Of Samplessupporting

confidence: 76%

Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+

Fan

Qin

et al. 2018

Bull. Chem. React. Eng. Catal.

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“…Figure 1 shows the XRD patterns of ZnAl-LDH, FePcS-LDH, and FePcS-PMA-LDH. As demonstrated in the diffractograms of ZnAl-LDH, the diffraction peaks at 2θ = 9.8 • (003), 19.8 • (006), 34.2 • (009) matched well with the characteristic peaks of the reported ZnAl-LDH [26][27][28]. The above peaks can also be found in the patterns of FePcS-LDH and FePcS-PMA-LDH, but slightly shifted to lower angles when compared with ZnAl-LDH.…”

Section: Photocatalytic Tests and Analytical Methodssupporting

confidence: 71%

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Huang

Tian

et al. 2020

Materials

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1) Background: Iron tetrasulfophthalocyanine with a large nonlinear optical coefficient, good stability, and high catalytic activity has aroused the attention of researchers in the field of photo-Fenton reaction. Further improvement of the visible light photo-Fenton catalytic activity under circumneutral pH conditions for their practical application is still of great importance. (2) Methods: In this paper, iron tetrasulfophthalocyanine (FePcS) and phosphomolybdic acid (PMA) cointercalated layered double hydroxides (LDH) were synthesized by the ion-exchange method. All samples were fully characterized by various techniques and the results showed that FePcS and PMA were successfully intercalated in layered double hydroxides and the resulted compound exhibited strong absorption in the visible light region. The cointercalation compound was tested as a heterogeneous catalyst for the visible light photo-Fenton degradation of bisphenol A (BPA) at circumneutral pH.(3) Results: The results showed that the degradation and total organic carbon removal efficiencies of bisphenol A were 100% and 69.2%, respectively. (4) Conclusions: The cyclic voltammetry and electrochemical impedance spectroscopy measurements demonstrated that the main contribution of PMA to the enhanced photo-Fenton activity of FePcS-PMA-LDH comes from the acceleration of electron transfer in the reaction system. Additionally, the possible reaction mechanism in the photo-Fenton system catalyzed by FePcS-PMA-LDH was also proposed.

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“…His research efforts include the design of nanostructured membranes for health, the environment, and renewable energy. [40][41][42] To the best of our knowledge, none of these reviews( especially those published over the last two years) focus on all of the above studies at the same time. On the other hand, anatase consists of irregular octahedras of oxygen atoms to give it an elongated structure.…”

Section: Introductionmentioning

confidence: 99%

“…[38,39] Some reviews highlight the effect of the photocatalysis operational parameters and modification of the properties of TiO 2 . [40][41][42] To the best of our knowledge, none of these reviews( especially those published over the last two years) focus on all of the above studies at the same time. Therefore, we believe that an ew and comprehensive review of TiO 2 photocatalysis is needed to face all the limitations mentioned above and to improve further the visible photocatalysis of TiO 2 .This review article presents recent progress achievedi nT iO 2 nanomaterials for photocatalytic applicationsu nder visible light.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

et al. 2018

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Environmental and energy problems have drawn much attention owing to rapid population growth and accelerated economic development. For instance, photocatalysis, "a green technology", plays an important role in solar-energy conversion owing to its potential to solve energy and environmental problems. Recently, many efforts have been devoted to improving visible-light photocatalytic activity by using titanium dioxide as a photocatalyst as a result of its wide range of applications in the energy and environment fields. However, fast charge recombination and an absorption edge in the UV range limit the photocatalytic efficiency of TiO under visible-light irradiation. Many investigations have been undertaken to overcome the limitations of TiO and, therefore, to enhance its photocatalytic activity under visible light. The present literature review focuses on different strategies used to promote the separation efficiency of electron-hole pairs and to shift the absorption edge of TiO to the visible region. Current synthesis techniques used to elaborate several nanostructures of TiO -based materials, recent progress in enhancing visible photocatalytic activity, and different photocatalysis applications will be discussed. On the basis of the studies reported in the literature, we believe that this review will help in the development of new strategies to improve the visible-light photocatalytic performance of TiO -based materials further.

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Photo-induced properties of photocatalysts: A study on the modified structural, optical and textural properties of TiO2–ZnAl layered double hydroxide based materials

Cited by 64 publications

References 87 publications

Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+

Enhanced Visible-Light-Driven Photocatalytic Activity of ZnAl Layered Double Hydroxide by Incorporation of Co2+

Synthesis of FePcS–PMA–LDH Cointercalation Composite with Enhanced Visible Light Photo-Fenton Catalytic Activity for BPA Degradation at Circumneutral pH

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

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