Sono-assisted synthesis of CuO nanorods–graphene oxide as a synergistic activator of persulfate for bisphenol A removal

Wang, Xiaobo; Min, Jianhua; Li, Sijie; Zhu, Xing; Cao, Xiaoyan; Yuan, Songliu; Zuo, Xiaohua; Deng, Xinyang

doi:10.1016/j.jece.2018.06.010

Cited by 25 publications

(5 citation statements)

References 27 publications

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“…Changes in the redox pairs of Fe (II) /Fe (III) and Cu (I) /Cu (II) were more obvious for CF/CF-a than for CFM/CFM-a, indicating that more electron capture occurred on the CF surface than for CFM and that it may have caused higher catalytic activity for CF in the ozonation process ( Figure 4 ). The loss of an electron from Cu (I) on the CuO could result in the formation of Cu (II) along with the decomposition of O 3 , which later generated both • OH and • O 2 − and later self-reacted to form 1 O 2 , as the major active species ( Figure 8 A) (Equations (16)–(19)) [ 41 , 42 , 43 ]. However, in addition, the • OH was also responsible for this oxidation process (Equation (18)).…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Ternary Nanoparticles for Catalytic Ozonation to Treat Parabens: Mechanisms, Efficiency, and Effects on Ceratophyllum demersum L. and Eker Leiomyoma Tumor-3 Cells

et al. 2022

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The use of parabens in personal care products can result in their leakage into water bodies, especially in public swimming pools with insufficient water treatment. We found that ferrite-based nanomaterials could catalytically enhance ozone efficiency through the production of reactive oxygen species. Our objective was to develop a catalytic ozonation system using ternary nanocomposites that could minimize the ozone supply while ensuring the treated water was acceptable for disposal into the environment. A ternary CuFe2O4/CuO/Fe2O3 nanocomposite (CF) delivered excellent degradation performance in catalytic ozonation systems for butylparaben (BP). By calcining with melamine, we obtained the CF/g-C3N4 (CFM) nanocomposite, which had excellent magnetic separation properties with slightly lower degradation efficiency than CF, due to possible self-agglomeration that reduced its electron capture ability. The presence of other constituent ions in synthetic wastewater and actual discharge water resulted in varying degradation rates due to the formation of secondary active radicals. 1O2 and •O2− were the main dominant reactive species for BP degradation, which originated from the O3 adsorption that occurs on the CF≡Cu(I)–OH and CF≡Fe(III)–OH surface, and from the reaction with •OH from indirect ozonation. Up to 50% of O3-treated water resulted in >80% ELT3 cell viability, the presence of well-adhered cells, and no effect on the young tip of Ceratophyllum demersum L. Overall, our results demonstrated that both materials could be potential catalysts for ozonation because of their excellent degrading performance and, consequently, their non-toxic by-products.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Ternary Nanoparticles for Catalytic Ozonation to Treat Parabens: Mechanisms, Efficiency, and Effects on Ceratophyllum demersum L. and Eker Leiomyoma Tumor-3 Cells

et al. 2022

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“…Various nanocatalysts have been reported for the degradation of BPA at different conditions, namely, Pd/Bi 4 O 5 Br 2 (Li et al, 2018), Cu 2 FeSnS 4 (Kong et al, 2019), Gd 2 WO 6 loaded ZnO/bentonite (Selvakumar et al, 2019) CuO is a nontoxic, easy to prepare, high visible light optical absorption coefficient and has extensively gained recognition in photocatalysis (Mirzai et al, 2020;Wang et al, 2022). As a result of the lower bandgap of CuO (1.8 eV), the application of pure CuO for photocatalytic degradation has many drawbacks, such as incomplete mineralization of organics, slow interfacial kinetics and quick recombination of electrons (e À ) and hole (h + ) (Wang et al, 2018;Zhang et al, 2020). Various methods have recently modified photocatalysts to improve their photodegradation rate and stability (Oh et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Efficient photocatalytic degradation of bisphenol A by green synthesized CuO decorated nickel hexacyanoferrate nanocomposite

Meenu

Rani

Shanker

2023

Water & Environment J

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Bisphenol A (BPA), a chemical additive in polycarbonate plastics and epoxy resins, is suspected to be an endocrine‐disrupter. Extensive use and irregular treating methods have led to frequent detection of BPA in wastewater, raising demand for their removal by efficient nanomaterials‐based technique. Nanocomposite CuO@NiHCF was synthesized via green method using Citrus aurantium peel extract. Crystalline structure (particle size <50 nm) of CuO@NiHCF was analysed by microscopic and spectroscopic analysis. This nanocomposite showed 97% degradation of BPA (50 mg L−1) at neutral pH in sunlight. Moreover, improved particle stability (zeta potential: −56.2 mV; 2.0 eV) and high surface area, pore volume (81 m2g−1, 13.9 nm) resulted from synergism of NiHCF (−26.3 mV; 2.4 eV), and CuO (−11.5 mV; 1.9 eV) led to efficient photodegradation of BPA. Degradation of BPA was found photo‐adsorptive. Moreover, degradation was carried out by OH radicals based with ring‐opening mechanisms by GC–MS. High efficiency and sustainability of CuO@NiHCF were revealed by its multiple reusability (n = 10), leading to a promising and sustainable photocatalyst.

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“…As a result, the combination of AC/CFO-PS can effectively enhance the rate of photocatalytic depolarization and shorten the removal time for dyes in wastewater. [44]. Therefore, these results show that ferrous ion present in catalyst is an active agent in degradation of dye using PS activation [34,45].…”

Section: Effect Of Catalyst Dosagementioning

confidence: 60%

“…The excessive dosages of catalyst could remove SO4 •− radicals without reacting with contaminants, due to the reaction of PS for either producing SO5 •− or recombining the formation of S2O8 2- [44]. Therefore, these results show that ferrous ion present in catalyst is an active agent in degradation of dye using PS activation [34,45].…”

Section: Effect Of Catalyst Dosagementioning

confidence: 80%

Photo-Fenton like Catalyst System: Activated Carbon/CoFe2O4 Nanocomposite for Reactive Dye Removal from Textile Wastewater

et al. 2019

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The removal of dye from textile industry wastewater using a photo-Fenton like catalyst system was investigated wherein the removal efficiency of phenol and chemical oxygen demand (COD) was studied by varying various parameters of pH (3–11), reaction time (1–50 min), activated Carbon/CoFe2O4 (AC/CFO) nanocomposite dosage (0.1–0.9 g/L), and persulfate amount (1–9 mM/L). The highest removal rates of reactive red 198 and COD were found to be 100% and 98%, respectively, for real wastewater under the optimal conditions of pH = 6.5, AC/CFO nanocomposite dosage (0.3 g/L), reaction time, 25 min, and persulfate dose of 5 mM/L up on constant UV light irradiation (30 W) at ambient room temperature. The result showed that this system is a viable and highly efficient remediation protocol relative to other advanced oxidation processes; inexpensive nature, the ease of operation, use of earth-abundant materials, and reusability for removal of organic pollutants being the salient attributes.

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Sono-assisted synthesis of CuO nanorods–graphene oxide as a synergistic activator of persulfate for bisphenol A removal

Cited by 25 publications

References 27 publications

Fabrication of Ternary Nanoparticles for Catalytic Ozonation to Treat Parabens: Mechanisms, Efficiency, and Effects on Ceratophyllum demersum L. and Eker Leiomyoma Tumor-3 Cells

Fabrication of Ternary Nanoparticles for Catalytic Ozonation to Treat Parabens: Mechanisms, Efficiency, and Effects on Ceratophyllum demersum L. and Eker Leiomyoma Tumor-3 Cells

Efficient photocatalytic degradation of bisphenol A by green synthesized CuO decorated nickel hexacyanoferrate nanocomposite

Photo-Fenton like Catalyst System: Activated Carbon/CoFe2O4 Nanocomposite for Reactive Dye Removal from Textile Wastewater

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