Hexagonal SnSe nanoplate supported SnO2-CNTs nanoarchitecture for enhanced photocatalytic degradation under visible light driven

Karpuraranjith, Marimuthu; Chen, Yuanfu; Wang, Xinqiang; Rajaboopathi, Sivamoorthy; Yang, Dongxu

doi:10.1016/j.apsusc.2019.145026

Cited by 48 publications

(9 citation statements)

References 32 publications

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“…The nature of the optical allowed transition is deduced from the exponent k (=2, direct) or (0.5, indirect). The gap Eg is deduced from the intersection of the plot (αhν) 2 with the abscissa-axis. The direct The formation of Ag 3 PO 4 was further supported by the FTIR spectroscopy, using the routine KBr technique in the 400-4500 cm −1 region.…”

Section: Characterization Of Ag 3 Pomentioning

confidence: 99%

“…The nature of the optical allowed transition is deduced from the exponent k (=2, direct) or (0.5, indirect). The gap E g is deduced from the intersection of the plot (αhν) 2 with the abscissa-axis. The direct transition at 2.52 eV (Figure 5) was in conformity with the yellow color of Ag 3 PO 4 that is a promising photocatalyst under visible light [20].…”

Section: Characterization Of Ag 3 Pomentioning

confidence: 99%

“…Advanced Oxidation Processes (AOPs), especially heterogeneous photocatalysis, is an environmentally friendly technique [1] that is used for pollutants elimination in water and air [2], bacterial inactivation [3], reduction of heavy metals to less harmful species and water splitting [4]. Photocatalysis initiates oxidation reactions through the generation of holes (h + ) and electrons (e − ) pairs.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Degradation of Quinoline Yellow over Ag3PO4

et al. 2020

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In this study, the ability of Ag3PO4 to achieve the photocatalytic degradation of quinoline yellow (QY) a hazardous and recalcitrant dye, under UVA and visible light was investigated. The photocatalyst Ag3PO4 was synthesized through a precipitation method, and characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), BET Brunauer–Emmett-Teller (BET) analysis, UV-Differential Reflectance Spectroscopy (DRS) and Fourier transform infrared spectroscopy (FTIR). Ag3PO4 could successfully induce the photocatalytic degradation of QY under UVA and visible light. Optimal parameters were 0.5 g·L−1 of the catalyst, 20 ppm of QY and pH~7. Ag3PO4 was 1.6-times more efficient than TiO2 Degussa P25 under UVA light in degrading QY. Total organic carbon (TOC) analyses confirmed the almost complete QY mineralization. At least eight intermediate degradation products were identified by liquid chromatography coupled to high resolution mass spectrometry. The stability of Ag3PO4 was satisfactory as less than 5% Ag metal appeared in XRD analyses after 3 reuse cycles. These results show that under optimized conditions Ag3PO4 can efficiently achieve quinolone yellow mineralization.

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Section: Characterization Of Ag 3 Pomentioning

confidence: 99%

“…The nature of the optical allowed transition is deduced from the exponent k (=2, direct) or (0.5, indirect). The gap E g is deduced from the intersection of the plot (αhν) 2 with the abscissa-axis. The direct transition at 2.52 eV (Figure 5) was in conformity with the yellow color of Ag 3 PO 4 that is a promising photocatalyst under visible light [20].…”

Section: Characterization Of Ag 3 Pomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Degradation of Quinoline Yellow over Ag3PO4

et al. 2020

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“…One of such materials that have found wide applications in solar energy conversion, photodegradation of pollutants, gas sensing and Egunjobi A.I., Fasasi A.Y., Eleruja M.A. photocatalysis is tin (IV) oxide, SnO2. The popularity of SnO2 in photocatalysis and photodegradation of environmental pollutants could best be demonstrated by the number of recent publications on the subject (Uddin et al, 2012;Ayadi et al, 2019;Sujatha et al, 2019;Yu et al, 2019;Magdalane et al, 2019;Navidpour et al, 2019;Ullah et al, 2020;Karpuraranjith et al, 2020). It is one of the metal oxide materials that possess high electrical conductivity with optical transparency and thus establishes itself as an important component for optoelectronic applications such as flat panel displays, solar cells, photodetectors, light-emitting diodes (LEDs) and transistors (Bau et al, 1997;Tsay and Liang, 2015;Yildirin et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Hence its excitation would require a UV source which is not usually safe for human exposure. For this reason, more recent works on photodegradation and photocatalytic applications of SnO2 have been focused on doped/composite/mixed/solid solutions of this oxide such as Cu: SnO2 (Babu et al, 2017;Sathishkumar and Geethalakshmi, 2020), MoS2-SnO2 core-shell microsphere (Yu-Chen et al, 2020), SnO2-CNTs nanoarchitecture (Karpura ranjith et al, 2020), Ni-doped SnO2-SnS2 heterojunctions (Chen et al, 2019), SnO2/TiO2 nanostructure (Magdalane et al, 2019), vanadium-doped SnO2 (Letifi et al, 2019), cerium-doped SnO2 (Ayadi et al, 2019), and so on. Mixed or composite oxides have been explored for a lot of other applications such as electrocatalysts for fuel cells (Garino, et al, 2016), as an electron transporting layer in perovskite solar cells (Mahmood et al, 2015), photocatalyst for hydrogen productions (Sinatra et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Optical and Dielectric Behaviour of SnO2-CuO Mixed Oxides Thin Films

Animasahun¹,

Taleatu²,

Bolarinwa³

et al. 2020

NJPAS

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The effects of CuO on the optical and dielectric properties of SnO2 thin film were studied to achieve improved light photon absorption and conversion. The films were deposited using airblast chemical spray pyrolysis. Rutherford Backscattering Spectrometric analysis using the Windows SIMNRA software gave the compositions of as-deposited and annealed films and their thicknesses. The optical and dielectric parameters were evaluated from the transmittance data obtained from UV – Visible spectrophotometer. The optical band gap of as-deposited SnO2-CuO film was evaluated to be 3.4 eV. The value of Urbach tail width of the as-deposited mixed oxide is higher (296 meV) compared to that of the annealed (252 meV) indicating the presence of more disordered states in the as-deposited film. The analysis also showed that the presence of CuO in the matrix of SnO2 led to a decrease in optical bandgap, refractive index, and by extension dielectric constants of SnO2. Our investigation led to the conclusion that the addition of CuO into SnO2 increased its electromagnetic photon absorption and also delay its speed thereby enhancing photon interaction with free charge carriers in the mixed oxide film. We opined that the mixed oxide will perform better in photocatalysis, photodegradation of pollutants and other lightharvesting applications since the CuO inclusion has extended its absorption edge towards the visible light range.

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Recent Advances in SnSe Nanostructures beyond Thermoelectricity

Wang

Huang

et al. 2022

Adv Funct Materials

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Layered SnSe is an emerging class of black phosphorus, which is non-toxic, eco-friendly, and chemically stable. Recently, SnSe nanostructures have triggered more research interest and enabled broad applications beyond demonstrating their great performances on thermoelectricity. However, there are also a great many significant studies of SnSe nanostructures beyond thermoelectricity. SnSe quantum dots, nanosheets, nanowires, and thin films with diverse morphologies have been synthesized using various chemical and physical preparation approaches. SnSe is a multi-phase semiconductor, and its nanostructures endow unique properties, including small electron effective mass, ultralow thermal conductivity, huge anisotropy, and the largest 2D piezoelectric coefficient ever predicted. The versatility of SnSe nanostructures can enable potential applications ranging from ultrafast photonics, logic devices, photodetectors, solar cells, photocatalysis, energy storage, and biology to more cutting-edge interdisciplinary subjects. In this review, the recent advances made in SnSe nanostructures are summarized, covering basics, synthesis, properties, and applications, just giving a passing comment on thermoelectricity. An in-depth perspective on the challenges and prospects of SnSe nanostructures toward broad and practical applications is also given.

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Hexagonal SnSe nanoplate supported SnO2-CNTs nanoarchitecture for enhanced photocatalytic degradation under visible light driven

Cited by 48 publications

References 32 publications

Photocatalytic Degradation of Quinoline Yellow over Ag3PO4

Photocatalytic Degradation of Quinoline Yellow over Ag3PO4

Investigation of the Optical and Dielectric Behaviour of SnO2-CuO Mixed Oxides Thin Films

Recent Advances in SnSe Nanostructures beyond Thermoelectricity

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