Facile fabrication of highly efficient modified ZnO photocatalyst with enhanced photocatalytic, antibacterial and anticancer activity

Raza, Waseem; Syed, Farhatullah; Owais, Mohammad; Bahnemann, Detlef W.; Muneer, M.

doi:10.1039/c6ra06774c

Cited by 164 publications

(45 citation statements)

References 94 publications

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“…However, when it comes to the commercial implication, the robustness of ZnO needs to be enriched further . For example, the trap state (including interstitial and missing atoms/vacancy defect) assisted loss of excitons, which is common in oxide‐based semiconductors, need to be addressed properly . One possibility of achieving this is, to use a better surfactant/capping molecule to passivate the surface traps, which dominantly trigger the carrier recombination.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

et al. 2019

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Herein, we report the preparation and visible light-triggered photocatalytic investigation of nitrogen-rich graphitic carbon nitride (g-C 3 N 4 ) nanosheets intercalated ZnO\MgÀ Al LDH (2D \2D) ternary nanocomposite. The ZnO nanoparticles, unique structured LDH, and g-C 3 N 4 are intercalated well by the hydrothermal treatment, showing a significant enhancement in the visible light absorption and corresponding photocatalytic activity. Formation of this new ternary nanocomposite was examined by using XRD, FE-SEM, TEM, FTIR, EDX, Elemental mapping, XPS and UV-Vis analysis. The ternary nanocomposite photocatalyst show remarkable performance towards the photodegradation of Methylene Blue (MB) dye. The ternary nanocomposite exhibited considerable improvement in the photocatalytic activity and is attributed to the N-rich g-C 3 N 4 and even distribution of ZnO\MgÀ Al LDH over the g-C 3 N 4 surface. This work offers a facile approach to prepare a novel visible light-response photocatalyst for photocatalytic dye degradation of organic pollutants.

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Section: Introductionmentioning

confidence: 99%

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

et al. 2019

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“…To investigate which of these species play the predominant role in the present investigation, kinetics experiments with radical scavengers specific for each of the above‐mentioned reactive species were conducted. For this purpose, we used potassium iodide (KI) h + scavenger, p‐benzoquinone (PBQ)

^{\cdot} {normalO}_{2}^{-}

scavenger and isopropyl alcohol (IPA)

{OH}^{\cdot}

radical scavengers . As displayed in Fig.…”

Section: Resultsmentioning

confidence: 99%

Curcumin‐Functionalized Ag/Ag₂O Nanocomposites: Efficient Visible‐Light Z‐scheme Photocatalysts

Kumar

Verma

Pal

et al. 2018

Photochem & Photobiology

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Curcumin-functionalized Ag/Ag O (c-Ag/Ag O) nanocomposites with varying proportions of curcumin and Ag/Ag O were prepared by a simple one pot green synthesis protocol in aqueous medium. The plasmonic band undergoes slight redshift, broadening and decrease in intensity with increase in the proportion of Ag O formed. These composite nanoparticles were found to be efficient visible-light photocatalysts for aerobic oxidation of methyl orange and rhodamine B (RhB). Functionalization by curcumin significantly enhanced the photocatalytic activity with good reusability. The photocatalytic oxidation rate showed super linear increase with light intensity because of localized surface plasmon resonance (LSPR)-induced strong near field. The trapping experiments confirmed that superoxide radicals were the main active species responsible for the degradation reaction. A plasmonic Z-scheme photocatalytic mechanism is proposed to explain the possible charge transfer and separation behavior of electron-hole pairs among Ag, Ag O and curcumin under visible-light irradiation.

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“…Even though, when it comes to commercial developments, the robustness of ZnO needs further developments [10]. Such as, the trapping state (including interstitial and missing atoms/vacancy defect) bolstered loss of excitons, which is basic in oxide-based semiconductors, should be tended to appropriately [11]. One plausibility of accomplishing this is, utilize a better surfactant/capping molecule to passivate the surface traps, which overwhelmingly trigger the charge carrier recombination.…”

Section: Photocatalysismentioning

confidence: 99%

LDH Ternary Nanocomposites: g-C₃N₄ Intercalated ZnO\Mg-Al for Superior Photocatalytic Activity towards Dye Degradation

Bhuvaneswari¹,

Pazhanivel²,

Palanisamy³

et al. 2020

Assorted Dimensional Reconfigurable Materials

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Photocatalytic dye degradation has received more attention as an affordable and effective way to treat the dye polluted water. In the present chapter, we are going to discuss; (i) the preparation and photophysical characterization of g-C 3 N 4 intercalated ZnO\Mg-Al LDH, a novel ternary nanocomposite, and (ii) its visible light photocatalytic degradation activity against the methylene blue dye. LDHs are 2D materials composed of "brucite-like" cationic layers where an inclusion of trivalent cations presents an overall positive charge to the nanosheets. g-C 3 N 4 is one of the organic semiconductor photocatalyst which active for several types of reactions such as CO 2 reduction, water splitting, and degradation because of its stable, nontoxic, and earth-abundant nature. Mainly, the development of numerous 2D g-C 3 N 4 nanosheets has been extensively used in the field of photocatalyst. By the combination heterojunction with 2D/2D interface can effectively improve the photocatalytic activity. The nitrogen-rich g-C 3 N 4 intercalated ZnO\Mg-Al LDH ternary nanocomposite formation could follow the direct dye degradation process and results enhance the visible light absorption. The enhanced photocatalytic activity is mainly due to the improved charge separation rate and high number of photogenerated electrons. The large number of photogenerated electrons and high charge separation efficiency are effectively influence the dye degradation efficiency.

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Facile fabrication of highly efficient modified ZnO photocatalyst with enhanced photocatalytic, antibacterial and anticancer activity

Abstract: Photocatalytic degradation of organic pollutants using hexagonal Er and Nd doped ZnO photocatalyst.

Cited by 164 publications

References 94 publications

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Curcumin‐Functionalized Ag/Ag₂O Nanocomposites: Efficient Visible‐Light Z‐scheme Photocatalysts

LDH Ternary Nanocomposites: g-C₃N₄ Intercalated ZnO\Mg-Al for Superior Photocatalytic Activity towards Dye Degradation

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Facile fabrication of highly efficient modified ZnO photocatalyst with enhanced photocatalytic, antibacterial and anticancer activity

Abstract: Photocatalytic degradation of organic pollutants using hexagonal Er and Nd doped ZnO photocatalyst.

Cited by 164 publications

References 94 publications

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Photodegradation Activity of Nitrogen‐rich Graphitic Carbon Nitride Intercalated ZnO\Mg‐Al Layered Double Hydroxide Ternary Nanocomposites on Methylene Blue Dye

Curcumin‐Functionalized Ag/Ag2O Nanocomposites: Efficient Visible‐Light Z‐scheme Photocatalysts

LDH Ternary Nanocomposites: g-C3N4 Intercalated ZnO\Mg-Al for Superior Photocatalytic Activity towards Dye Degradation

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Product

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Curcumin‐Functionalized Ag/Ag₂O Nanocomposites: Efficient Visible‐Light Z‐scheme Photocatalysts

LDH Ternary Nanocomposites: g-C₃N₄ Intercalated ZnO\Mg-Al for Superior Photocatalytic Activity towards Dye Degradation