Hetro-nanostructured Se-ZnO sustained with RGO nanosheets for enhanced photocatalytic degradation of p-Chlorophenol, p-Nitrophenol and Methylene blue

Kumar, Sonu; Kaushik, R.D.; Purohit, L.P.

doi:10.1016/j.seppur.2021.119219

Cited by 46 publications

(14 citation statements)

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“…80‐0075. [ 17,18 ] Simultaneously, the disappearance of peaks for Se in SZ and SZG could be related to its feign signals derived from the low amount of precursors as well as the intercalation into the crystal lattice of ZnO. This could decrease the interlayer spacing of ZnO, resulting in characteristic peaks shifting of ZnO (figure 1b).…”

Section: Resultsmentioning

confidence: 99%

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Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Trinh,

Huong,

Hai

et al. 2022

Vietnam Journal of Chemistry

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Herein, selenium doped‐zinc oxide decorated in graphene (Se@ZnO/Gr ‐ SZG) was facilely synthesized via the hydrothermal method with orange peel extract as a reducing agent. The composite was well characterized by various modern analytical methods. In terms of the characterization analysis, the synthesized Se@ZnO with high crystallinity has a hamburger‐like structure uniformly distributed on the graphene sheets. The effects of catalyst dosage, H2O2 volume, and pH on the photodegradation of para‐nitrophenol are studied. Besides, the investigation of the photodegradation performance revealed a 99.22 % elimination under treatment of 15 mg of SZG catalyst in the presence of 1.25 mL H2O2 at pH 9 for 100 min UV irradiation. Accordingly, the results express the potentiality of the material in organic matter treatment.

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Section: Resultsmentioning

confidence: 99%

“…Furthermore, the D and G bands of SZG could be at 1346 and 1588 cm ‐1 , respectively (figure 2b) proposing the inconsiderable interference with graphene matrix once the anchoring of metalloid ‐ metal oxide particles. [ 17 ] The I D /I G ratio of 1.042 reveals the relatively non‐induction defects on the GO after doping.…”

Section: Resultsmentioning

confidence: 99%

Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Trinh,

Huong,

Hai

et al. 2022

Vietnam Journal of Chemistry

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“…The parameter pH is quite significant in adsorption studies due to protonation or deprotonation of adsorbent's active sites and it affects the adsorbent and adsorbate properties. The analysis of pH sensitivity of bio-adsorbent during MB removal was investigated in a pH range (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12) of synthetic dye solution keeping other parameters constant. The result is presented in Figure 6c.…”

Section: Effect Of Ph and Contact Timementioning

confidence: 99%

“…Therefore, higher educational institutes and research centres of developing countries are encouraged to yield sustainable initiatives for the removal of MB [9] . To date, different techniques for remediation of MB like adsorption, [10] photodegradation, [11] electrochemical discoloration, [12] catalytic degradation, [13] membrane separation, [14] ultrafiltration [15] have already been used. Adsorption technique is widely used due to its higher efficiency, convenience in design, low cost, vast usage, and effectiveness [16,17] …”

Section: Introductionmentioning

confidence: 99%

Novel Fe₃O₄‐Modified Biochar Derived from Citrus Bergamia Peel: A Green Synthesis Approach for Adsorptive Removal of Methylene Blue

et al. 2022

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The present study reveals the enhanced bio-sorption of methylene blue (MB) from an aqueous solution using iron oxide immobilized citrus bergamia biochar (Fe 3 O 4 CBC). The adsorption efficiency was increased dramatically from 64 % to 98 % after the magnetic iron oxide modification to citrus bergamia biochar (CBC) due to electrostatic interaction. Physico-chemical alterations of CBC surface prior and post-modification and after dye adsorption were evaluated using the following surface techniques such as FTIR, XRD, SEM, BET, Raman, TGA-DTA, Zeta potential analysis. The retention of CÀ OH, C=O, CÀ O, CÀ H, and Fe 3 O 4 groups were confirmed from FTIR spectra. BET analysis revealed that Fe 3 O 4 CBC showed an elevated surface area of 136.72 m 2 g À 1 with a reduced pore diameter of 3.73 nm than CBC. The Pseudo second order and Langmuir isotherm model was best fitted with R 2 = 0.99 and adsorption capacity of 31 mg/g. The thermodynamic data (ΔS = 0.1455 kJ mol À 1 K À 1 , ΔH = 33.87 kJ mol À 1 ) revealed the spontaneity, endothermic nature, and feasibility of adsorption process. Regeneration studies revealed that the material has excellent sorption-based performance over five consecutive cycles. The current work demonstrates that Fe 3 O 4 CBC can serve as a highly efficient, cost-effective, bio adsorbent for the removal of MB with easy magnetic separation from aqueous medium.

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“…Methylene blue, which is a cationic organic dye commonly found in textile wastewater [10], is a typical example that reveals the harmfulness of dyes. For instance, methylene blue is so toxic and harmful to humans that it can cause nausea, anemia, diarrhea, and high blood pressure [11,12]. This is also the case for aquatic animals and plants [13].…”

Section: Introductionmentioning

confidence: 99%

Zero Discharge of Dyes and Regeneration of a Washing Solution in Membrane-Based Dye Removal by Cold Plasma Treatment

et al. 2022

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Although dye removal from wastewater streams has been investigated via several approaches using adsorbents, resins, or membranes, it is still hard to avoid the fact that dyes are persistently left in the adsorption materials or washing solutions used to regenerate the used adsorbents. In particular, given that cleaning agents are composed of acid/base, organic solvents, or electrolytes, dye adsorption and adsorbent regeneration processes leave behind more hard-to-manage wastewater containing dyes. In this study, we demonstrated that cold plasma (CP) treatment, which is one of the advanced oxidation processes (AOPs), can be used for zero discharge of dyes and regeneration of a washing solution in a membrane-based dye removal process. Specifically, CP treatment was found to successfully remove dyes released from a washing process to regenerate a used membrane, thereby effectively recycling a cleaning solution. As a result, the regenerated washing solution was more favorable for the adsorbed dyes’ elution, leading to the successful regeneration of a used membrane without a significant loss of dye removal efficiency. This fact was evidenced by a comparative study on the effect of CP treatment on the reusability of membranes and washing solutions and the kinetic analysis of the AOP of the desorbed dyes. We hope that this study contributes to opening a new door for environmentally friendly and sustainable dye removal.

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Hetro-nanostructured Se-ZnO sustained with RGO nanosheets for enhanced photocatalytic degradation of p-Chlorophenol, p-Nitrophenol and Methylene blue

Cited by 46 publications

References 50 publications

Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Novel Fe₃O₄‐Modified Biochar Derived from Citrus Bergamia Peel: A Green Synthesis Approach for Adsorptive Removal of Methylene Blue

Zero Discharge of Dyes and Regeneration of a Washing Solution in Membrane-Based Dye Removal by Cold Plasma Treatment

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Hetro-nanostructured Se-ZnO sustained with RGO nanosheets for enhanced photocatalytic degradation of p-Chlorophenol, p-Nitrophenol and Methylene blue

Cited by 46 publications

References 50 publications

Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Hamburger‐liked selenium doped‐zinc oxide decorated in graphene for assessing enhanced phenolic compound removal

Novel Fe3O4‐Modified Biochar Derived from Citrus Bergamia Peel: A Green Synthesis Approach for Adsorptive Removal of Methylene Blue

Zero Discharge of Dyes and Regeneration of a Washing Solution in Membrane-Based Dye Removal by Cold Plasma Treatment

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Product

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Novel Fe₃O₄‐Modified Biochar Derived from Citrus Bergamia Peel: A Green Synthesis Approach for Adsorptive Removal of Methylene Blue