Facile synthesis of Z-scheme Fe-nPPy/BiOI nanocomposites for enhanced visible light driven photocatalytic activity

Kumar, Rajesh; Gogoi, Rituporn; Sharma, Kajal; Singh, Astha; Siril, Prem Felix

doi:10.1039/d3va00250k

Cited by 2 publications

(1 citation statement)

References 45 publications

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“…Molecular structures of these ligands are presented in Figure S1. The adsorption performance of catalyst was analyzed in dark conditions. , However, visible light illumination (∼150000 lx) was used for photocatalytic degradation experiments. Aliquots (1 mL) were collected at specified intervals and centrifuged immediately.…”

Section: Experimental and Computational Detailsmentioning

confidence: 99%

Push–Pull Engine─Electron Pumping by Anchored Ligands over ZnO/C: Boosting Photo-Fenton-Like Catalysis without Additional Oxidants

Sharma,

Kaushik,

et al. 2024

ACS EST Eng.

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Effective production of reactive oxygen species (ROS) is essential for advanced oxidation processes in water treatment. This research delves into the enhancement of photo-Fenton response using an unconventional catalyst, zinc-oxide/carbon hierarchical nanocomposite microspheres (ZnO/C HNMs), to facilitate the photocatalytic oxidation of pollutants. Among the investigated electron-donating organic ligands, ethylenediaminetetraacetic acid (EDTA) exhibited the most significant impact. Through in-situ UV-irradiated XPS, density functional theory calculations, and optical characterizations, a ‘push–pull’ effect of electrons between EDTA and the carbon collector has been elucidated. This effect facilitates the accumulation of photogenerated holes and electrons over the carbon and ZnO components of ZnO/C-EDTA HNMs, respectively, thereby endowing them with dual functionality as photo-Fenton catalysts capable of both in-situ H2O2 generation and activation. ZnO/C-EDTA HNMs demonstrate outstanding photocatalytic pollutant removal efficiency, achieving levels of up to 500 mg g–1, surpassing those of other reported Zn-based photocatalysts. Moreover, the enhancement induced by the ligand extends beyond pollutant removal, manifesting in significantly increased photocatalytic H2 production when combined with a Pt cocatalyst and glucose as a sacrificial biomass. This underscores the versatility and applicability of the ZnO/C-EDTA HNMs across different environmental remediation scenarios. This discovery presents a novel strategy for modulating charge transfer over transition-metal-oxide/carbon interfaces using electron-donating ligands, with significant implications for efficient wastewater treatment and other related environmental applications.

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Section: Experimental and Computational Detailsmentioning

confidence: 99%

Push–Pull Engine─Electron Pumping by Anchored Ligands over ZnO/C: Boosting Photo-Fenton-Like Catalysis without Additional Oxidants

Sharma,

Kaushik,

et al. 2024

ACS EST Eng.

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Engineering the physical properties and photocatalytic activities of a β-ketoenamine COF using continuous flow synthesis

Singh,

Gogoi,

Sharma

et al. 2024

Chemosphere

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Facile synthesis of Z-scheme Fe-nPPy/BiOI nanocomposites for enhanced visible light driven photocatalytic activity

Abstract: Development of heterogeneous catalysts that are active in the visible light is important for realizing the sustainable chemistry dream of using sunlight of effecting chemical transformations. In this work, conducting...

Cited by 2 publications

References 45 publications

Push–Pull Engine─Electron Pumping by Anchored Ligands over ZnO/C: Boosting Photo-Fenton-Like Catalysis without Additional Oxidants

Push–Pull Engine─Electron Pumping by Anchored Ligands over ZnO/C: Boosting Photo-Fenton-Like Catalysis without Additional Oxidants

Engineering the physical properties and photocatalytic activities of a β-ketoenamine COF using continuous flow synthesis

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