Aminolytic Depolymerization of Polyethylene Terephthalate Wastes Using Sn-Doped ZnO Nanoparticles

Vinitha, Viswanathan; Preeyanghaa, Mani; Anbarasu, M.; Jeya, Gopal; Neppolian, Bernaurdshaw; Sivamurugan, Vajiravelu

doi:10.1007/s10924-022-02455-9

Cited by 25 publications

(13 citation statements)

References 36 publications

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“…The synthesis of 1 mol% Sn doped ZnO nanoparticles using sol-gel method have been reported by us previously (Vinitha et al, 2022). By following the same procedure, 1 and 2 mol% Ag/Sn doped zinc oxide nanoparticles through our earlier reported method (Vinitha et al, 2022). Initially, Zinc nitrate hexahydrate (36.55g, 0.1228 mol) and Tin (II) chloride dihydrate (0.27g, 1.228 mmol, 1 mol% with respect to Zn 2+ ) were dissolved in 50 mL of distilled water, the mixture was kept under constant magnetic stirring for 15 minutes at room temperature.…”

Section: Synthesis Of Sn and Ag Doped Zno Nanoparticles Using Solgel ...mentioning

confidence: 99%

“…BHETA obtained as white needle crystals, which ltered and dried at vacuum. Finally, the yield of the reaction is calculated from the weight of the nal product (Vinitha et al, 2022).…”

Section: Depolymerization Of Pes Textile Wastes Using Glycolysis and ...mentioning

confidence: 99%

“…Group IV metals like Sn is a common dopant used to improve the optical and electrical properties of ZnO. Sn can act as a donor, and doping in ZnO improved its electrical and optical properties by reducing the optical bandgap (Vinitha et al 2022). Furthermore, Ag doped ZnO nanoparticles can permanently develop their photonic attainment by enhancing the surface plasmon resonance of the undoped ZnO nanoparticles and trapping photogenerated electrons and holes in the as-received doping nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO is a known Lewis acid catalyst and can be tuned by doping with suitable dopants. In our previous study, we have explored the aminolytic depolymerization of PET beverage bottle wastes using Sn doped ZnO nanoparticles (Vinitha et al 2022). Hence in the present investigation, we have focused on the catalytic evaluation of Ag and Sn doped ZnO nanoparticles towards glycolytic and aminolytic depolymerization of PET textile wastes.…”

Section: Introductionmentioning

confidence: 99%

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Depolymerization of PET wastes catalysed by Sn and Ag doped ZnO nanoparticles and evaluation of Embryonic Toxicity using Zebrafish

Vinitha¹,

Anbarasu²,

Priya³

et al. 2023

Preprint

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The present investigation focused on the catalytic evaluation of Sn and Ag doped ZnO for depolymerization of polyethylene terephthalate (PET) polyester wastes and embryotoxic evaluation of the doped ZnO nanoparticles using Zebrafish (Danio rerio) embryo model. Bimetallic ZnO NPs doped at 1 and 2 mol% of Sn and Ag synthesized by sol-gel method and characterized by XRD, UV-Vis, FT-IR, SEM-EDS and TEM. Diffraction studies confirmed doped ZnOs retained wurtzite structure as pristine ZnO. However, the electronic spectra showed that the optical bandgap reduced from 3.31 to 3.20 eV upon 2 mol% Sn and Ag doping. SEM-EDS study confirmed elemental composition of Ag and Sn doped ZnO as well as average crystallite size of 60–70 and 115–125 nm for 1 and 2 mol% doped ZnO NPs. Glycolytic and aminolytic depolymerization of PET wastes afforded 90% of bis(2-hydroxyethyl) terephthalate (BHET) and 95% of bis(2-hydroxyethyl) terephthalamide (BHETA) respectively catalysed by 2mol% Sn and Ag doped ZnO nanoparticles. The Sn doped ZnO NPs showed comparatively higher mortality than Ag doped ZnO without any developing deformity in zebrafish embryos.

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Section: Synthesis Of Sn and Ag Doped Zno Nanoparticles Using Solgel ...mentioning

confidence: 99%

“…BHETA obtained as white needle crystals, which ltered and dried at vacuum. Finally, the yield of the reaction is calculated from the weight of the nal product (Vinitha et al, 2022).…”

Section: Depolymerization Of Pes Textile Wastes Using Glycolysis and ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Depolymerization of PET wastes catalysed by Sn and Ag doped ZnO nanoparticles and evaluation of Embryonic Toxicity using Zebrafish

Vinitha¹,

Anbarasu²,

Priya³

et al. 2023

Preprint

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show abstract

“…Accordingly, visible light driven semiconductor photocatalysis is considered to be an optimistic and positive approach to focus on the prevailing environmental and energy issues. Large numbers of photocatalysts with excellent photocatalytic properties have been reported by the researchers [Vinitha et al 2022]. Graphitic carbon nitride (g-C 3 N 4 ) as a polymeric semiconductor with a suitable bandgap energy (E g ) value (2.7-3.0 eV), in addition to this, the preparation of g-C 3 N 4 is made from different inexpensive precursors like urea, melamine, cyanamide and dicyanamide.…”

Section: Introductionmentioning

confidence: 99%

A Z-scheme BiYO3/g-C3N4 heterojunction photocatalyst for the degradation of organic pollutants under visible light irradiation

Sasikala

Bavani

Selvaraj

et al. 2023

Environ Sci Pollut Res

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Photocatalysis is one of the fascinating elds for the wastewater treatment. In this regard, the present study deals with an effective visible light active BiYO 3 /g-C 3 N 4 heterojunction nanocomposite photocatalyst with various ratio of BiYO 3 and g-C 3 N 4 (1:3, 1:1 and 3:1), synthesised by wet chemical approach. The as-synthesised nanocomposite photocatalysts were investigated via different physicochemical approaches like Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electrons microscopy (TEM), UV-vis diffuse re ectance spectroscopy (DRS), photoluminescence (PL) and photoelectrochemical studies to characterise the crystal structure, morphology, optical absorption characteristics and photoelectrochemical properties. The photocatalytic degradation ability of the prepared photocatalytic samples were also analysed through the degradation of RhB in the presence of visible light irradiation. Of all the synthesised photocatalysts, the optimised CB-1 composite showed a signi cant photocatalytic e ciency (88.7%), with excellent stability and recyclability after three cycles. O 2 . − and • OH radicals were found to act a major role in the RhB degradation using optimised CB-1 composite and it possessed ~ 1 times greater photocurrent intensity than the pristine g-C 3 N 4 and BiYO 3 . In the present work, a direct Zscheme heterojunction BiYO 3 /g-C 3 N 4 with a considerably improved photocatalytic performance is reported.

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Operating conditions, products and sustainable recycling routes of aminolysis of polyethylene terephthalate (PET) – a review

Mersha,

Gesese,

Sendekie

et al. 2024

Polym. Bull.

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Aminolytic Depolymerization of Polyethylene Terephthalate Wastes Using Sn-Doped ZnO Nanoparticles

Cited by 25 publications

References 36 publications

Depolymerization of PET wastes catalysed by Sn and Ag doped ZnO nanoparticles and evaluation of Embryonic Toxicity using Zebrafish

Depolymerization of PET wastes catalysed by Sn and Ag doped ZnO nanoparticles and evaluation of Embryonic Toxicity using Zebrafish

A Z-scheme BiYO3/g-C3N4 heterojunction photocatalyst for the degradation of organic pollutants under visible light irradiation

Operating conditions, products and sustainable recycling routes of aminolysis of polyethylene terephthalate (PET) – a review

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