Synthesis of a ternary Ag/RGO/ZnO nanocomposite via microwave irradiation and its application for the degradation of Rhodamine B under visible light

Surendran, Divya Kollikkara; Xavier, Marilyn Mary; Viswanathan, Vandana P.; Mathew, Suresh

doi:10.1007/s11356-017-9135-x

Cited by 31 publications

(3 citation statements)

References 37 publications

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“…Similar results were obtained by Mohit et al, [23] who found that the integration of Ag and rGO together reduces the E g value of ZnO from 3.19 eV to 2.9 eV. Furthermore, our values are consistent with those reported by Divya et al, [49] who have found that the E g of ZnO decreases from 3.14 eV to 2.62 eV, which is attributed to the synergetic interaction with Ag and rGO contents.…”

Section: Optical Propertiessupporting

confidence: 92%

Photoelectrochemical activity of ZnO:Ag/rGO photo-anodes synthesized by two-steps sol-gel method

Jemia¹,

Karyaoui²,

Wederni³

et al. 2022

Chinese Phys. B

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This work investigate the influence of Silver Plasmon and reduced graphene oxide (rGO) on the photoelectrochemical performance (PEC) of ZnO thin films synthesized by the sol-gel method. The physicochemical properties of the obtained photo-anodes were systematically studied using several characterization techniques. The X-ray diffraction analysis showed that all samples presented hexagonal Wurtzite structure with apolycrystalline nature. Raman and EDX studies confirmed the existence of both Ag and rGO in ZnO: Ag/rGO thin films. The estimated grain size obtained from (SEM) analysis decreased with Ag doping, then increased to a maximum value after rGO addition. The UV-vis transmission spectra of the as-prepared ZnO: Ag and ZnO: Ag/rGO thin films have shown a reduction in the visible range with a redshift at the absorption edges. The bandgaps were estimated to be around 3.17, 2.7, and 2.52 eV for ZnO, ZnO: Ag, and ZnO: Ag/rGO, respectively. Moreover, the electrical measurements revealed that the charge exchange processes were enhanced at the ZnO: Ag/rGO/electrolyte interface, accompanied by an increase in the (PEC) performance compared to ZnO and ZnO: Ag photo-anodes. Consequently, the photocurrent density of ZnO: Ag/rGO (0.2 mA.cm-2) was around 4 and 2.22 times higher than photo-anodes based on undoped ZnO (0.05 mA.cm-2) and ZnO: Ag (0.09 mA.cm-2), respectively. Finally, from the flat band potential and donor density, deduced from the Mott-Schottky, it was clear that all the samples were n-type semiconductors with the highest carrier density for the ZnO: Ag/rGO photo-anode.

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Section: Optical Propertiessupporting

confidence: 92%

Photoelectrochemical activity of ZnO:Ag/rGO photo-anodes synthesized by two-steps sol-gel method

Jemia¹,

Karyaoui²,

Wederni³

et al. 2022

Chinese Phys. B

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“…For that reason, they are considered more toxic than the anionic ones. There are several methods to eliminate this pollutant, 62,63 but Zhao and co-workers 64 reported a new one where the porphyrin-based porous organic polymer H 2 5 (Fig. 3) is used as a photocatalyst for the degradation of RhB and also methylene blue (MB).…”

Section: Wastewater Treatment Using Polymeric Porphyrins or Porphyrin...mentioning

confidence: 99%

Porphyrin-containing materials for photodegradation of organic pollutants in wastewaters: a review

Gamelas,

Tomé,

Tomé

et al. 2024

Catal. Sci. Technol.

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“…Genotoxicity may ascend via indirect mechanisms where NPs do not physically interrelate with the DNA molecule but with other "cellular components", such as those involved in the cell division process. Other cellular responses may be induced and give rise to genotoxicity, such as oxidative stress induction, inflammatory response, and aberrant signaling responses (34,19,21).The literatures on the toxicity of ZnONPs have focused on early developmental stages or on acute exposure to aquatic biomass (14). It is well known that, "Vitamins E and C are potent antioxidants and act by scavenging the free radicals or ROS and compensate the decrease in reduced glutathione" (38).…”

Section: Introductionmentioning

confidence: 99%

Role of Vitamin C and E on Genotoxicity, Hematological and Biochemical Investigation in Cyprinus Carpio L. Following Zinc Oxide Nanoparticles Exposure

H. H. Faik,

S.A. Mustafa

2023

Iraqi J. Agric. Sci.

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This study was aimed to evaluate the role of vitamins C and E on genotoxicity, biochemical and hematological indices in common carp, Cyprinus carpio following zinc oxide nanoparticles exposure. Zinc oxide nanoparticles were synthesized (size was < 34nm) and characterized using Fourier Transform Infrared Spectra (FTIR) and X-Ray Diffraction (XRD) analysis. About 120 common carp (weight 20.0-32.0 g) were randomly divided into 12 tanks at rate of 10 fish/tank (two (replicates/treatment); fish were fed diet as follows: Control (C) were fed basal diet; T1 fish were fed basal diet mixed with vitamins C and E (400 mg/kg); T2 and T3 fish were fed basal diet mixed with 10%and 15% ZnONPs respectively; T4 and T5 fish were fed basal diet mixed with ZnONPs 10% and 15% plus vitamins C and E (400 mg/kg dw) respectively. Post 40 d feeding trail, variable changes were registered in blood indices (“Hb content, PCV%, WBCs and RBCs numbers”) in all treated groups compared to C and T1 groups. The highest DNA damage (% tail DNA using Comet assay) was seen in T2 and T3 which asserted highly significant increased (P≤0.01) compared to C and to treated groups. As well as, glutathione peroxidase (GPx) activity exhibited highly significant increase (P≤0.01) in T2 and T3 groups relative to C, T4, T1, T5 respectively. This investigation clearly proved that sub-lethal doses (10 and 15% in diet) of ZnONPs were able to induce an oxidative stress in carp fish as reflected by significantly increase of DNA damage to erythrocytes and “the combination of vitamins C and E was able to alleviate the oxidative stress generated due to exposure to ZnONPs.”

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Synthesis of a ternary Ag/RGO/ZnO nanocomposite via microwave irradiation and its application for the degradation of Rhodamine B under visible light

Cited by 31 publications

References 37 publications

Photoelectrochemical activity of ZnO:Ag/rGO photo-anodes synthesized by two-steps sol-gel method

Photoelectrochemical activity of ZnO:Ag/rGO photo-anodes synthesized by two-steps sol-gel method

Porphyrin-containing materials for photodegradation of organic pollutants in wastewaters: a review

Role of Vitamin C and E on Genotoxicity, Hematological and Biochemical Investigation in Cyprinus Carpio L. Following Zinc Oxide Nanoparticles Exposure

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