UV/visible light active CuCrO<sub>2</sub> nanoparticle–SnO<sub>2</sub> nanofiber p–n heterostructured photocatalysts for photocatalytic applications

Dursun, Sami; Kaya, İsmail Cihan; Kalem, Volkan; Akyıldız, Hasan

doi:10.1039/c8dt02850h

Cited by 47 publications

(22 citation statements)

References 74 publications

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“…Among the best known classes of such catalysts are p-n heterojunctions, which have been extensively studied to optimize their photocatalytic activity. Their catalytic mechanism is based on an internal electric field established at the interface of the p-n junction, which promotes the efficient separation of photogenerated carriers Dong et al, 2018;Dursun et al, 2018;Wang et al, 2018;Zeng et al, 2019). The Mott-Schottky plots measured by electrochemistry demonstrate that Li 2 SnO 3 is a p-type semiconductor.…”

Section: Introductionmentioning

confidence: 99%

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Wang

et al. 2020

Front. Chem.

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The design of highly efficient and stable photocatalysts to utilize solar energy is a significant challenge in photocatalysis. In this work, a series of novel p-n heterojunction photocatalysts, Li 2 SnO 3 /g-C 3 N 4 , was successfully prepared via a facile calcining method, and exhibited superior photocatalytic activity toward the photodegradation of Rhodamine B solution under visible light irradiation as compared with pure Li 2 SnO 3 and g-C 3 N 4. The maximum kinetic rate constant of photocatalytic degradation of Rhodamine B within 60 min was 0.0302 min −1 , and the composites still retained excellent performance after four successive recycles. Chemical reactive species trapping experiments and electron paramagnetic resonance demonstrated that hydroxyl radicals (•OH) and superoxide ions (•O − 2) were the dominant active species in the photocatalytic oxidation of Rhodamine B solution, while holes (h +) only played a minor role. We demonstrated that the enhancement of the photocatalytic activity could be assigned to the formation of a p-n junction photocatalytic system, which benefitted the efficient separation of photogenerated carriers. This study provides a visible light-responsive heterojunction photocatalyst with potential applications in environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Wang

et al. 2020

Front. Chem.

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“…The final product was dried in an oven for 24 hours at 50°C. SnO 2 nanofibers were produced using electrospinning method according to our previous work (Figure ). During the synthesis SnCl 4 .5H 2 O was dissolved in ethanol and DMF (1:1 v/v) for 1h at RT and then PVP was added to this solution.…”

Section: Methodsmentioning

confidence: 99%

Visible light active heterostructured photocatalyst system based on CuO plate‐like particles and SnO₂ nanofibers

Dursun

Kaya

Kocabaş

et al. 2020

Int J Applied Ceramic Tech

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In this study, CuO-SnO 2 p-n type heterostructures were produced and tested for the degradation of methylene blue and 4-nitrophenol under visible light irradiation. CuO particles were produced in plate-like morphology using hydrothermal synthesis. SnO 2 nanofibers were obtained by electrospinning. Structural, morphological, optical and semiconducting property characterization of heterostructured CuO-SnO 2 and individual phases were performed. The photocatalytic activity was found to change depending on the amount of CuO particles in heterostructured samples. Among others, the sample with 0.35 wt.% CuO-SnO 2 showed the highest photocatalytic efficiency with a degradation rate constant ~2 h −1 . Active specie scavenger tests revealed that the decomposition reaction occurs through direct oxidation mechanism by the holes in the valence band of SnO 2 in pure samples whereas in CuO-SnO 2 samples • O − 2 and • OH radicals also form and involve in the reactions. Further, the photocatalytic degradation mechanism was revealed using relative band potentials and p-n junctions of the heterostructured photocatalyst.

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“…CuCrO 2 -decorated SnO 2 composite nanofibers were synthesized by electrospinning, followed by a drop-casting method. The composite nanofibers displayed 41% better rate of constant value in comparison with pure SnO 2 [55]. Zr is in the same group IVB of elements as Ti, but ZrO 2 can only absorb 4% of solar light because of the high energy bandgap and low specific area.…”

Section: Other Photocatalystsmentioning

confidence: 97%

Composite Nanofibers: Recent Progress in Adsorptive Removal and Photocatalytic Degradation of Dyes

Phan¹,

Kim²

2020

Composite and Nanocomposite Materials - From Knowledge to Industrial Applications

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This chapter intends to review the state of the art of a new nanomaterial generation based on electrospun composite nanofibers for dye removal from wastewater. Natural polymer-based nanofibers, nanofibers with unique morphology, and carbon nanofibers were comprehensively reviewed as capable carriers for a broad spectrum of functional materials such as metal oxides, zeolite, graphene and graphene oxide (GO), and metal-organic frameworks (MOFs) in the application of dye removal. The various nanostructures, adsorption capacity, advantages, and drawbacks were discussed along with mechanistic actions in the adsorption process and photocatalytic performance that emphasize current research development, opportunities, and challenges. The chapter covers multiple intriguing topics with in-depth discussion and is a valuable reference for researchers who are working on nanomaterials and the treatment of colored waters.

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UV/visible light active CuCrO₂ nanoparticle–SnO₂ nanofiber p–n heterostructured photocatalysts for photocatalytic applications

Abstract: p–n heterostructured photocatalysts consisting of hydrothermally derived CuCrO2 nanoparticles and electrospun SnO2 nanofibers were successfully prepared for the first time.

Cited by 47 publications

References 74 publications

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Visible light active heterostructured photocatalyst system based on CuO plate‐like particles and SnO₂ nanofibers

Composite Nanofibers: Recent Progress in Adsorptive Removal and Photocatalytic Degradation of Dyes

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UV/visible light active CuCrO2 nanoparticle–SnO2 nanofiber p–n heterostructured photocatalysts for photocatalytic applications

Abstract: p–n heterostructured photocatalysts consisting of hydrothermally derived CuCrO2 nanoparticles and electrospun SnO2 nanofibers were successfully prepared for the first time.

Cited by 47 publications

References 74 publications

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Novel P-n Li2SnO3/g-C3N4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation

Visible light active heterostructured photocatalyst system based on CuO plate‐like particles and SnO2 nanofibers

Composite Nanofibers: Recent Progress in Adsorptive Removal and Photocatalytic Degradation of Dyes

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UV/visible light active CuCrO₂ nanoparticle–SnO₂ nanofiber p–n heterostructured photocatalysts for photocatalytic applications

Visible light active heterostructured photocatalyst system based on CuO plate‐like particles and SnO₂ nanofibers