Efficient degradation of sulfamethoxazole by the CuO@Al2O3 (EPC) coupled PMS system: Optimization, degradation pathways and toxicity evaluation

Yan, Jianfei; Li, Jun; Peng, Jiali; Zhang, Heng; Zhang, Yunhong; Lai, Bo

doi:10.1016/j.cej.2018.11.074

Cited by 248 publications

(32 citation statements)

References 53 publications

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“…It should be addressed that the removal efficiency of SMX achieved by LaCoO 3 /PAA in this study was comparable or even higher than many published studies [ 41 , 42 , 43 , 44 , 45 , 46 ], and with much less catalyst addition. For example, Yan et al [ 46 ] prepared CuO@Al 2 O 3 to activate PMS and approximately 90% of SMX was removed under similar conditions ([SMX] 0 = 39.5 μM, [PMS ]0 = 0.4 mM, pH 6.2) but a large catalyst dosage ([cata] 0 = 500 mg/L). Lalas et al [ 45 ] reported that complete SMX degradation was obtained within 90 min through persulfate with 2 g immobilized CuOx catalyst.…”

Section: Resultssupporting

confidence: 71%

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

Zhou

Zhang

et al. 2020

Molecules

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Advanced oxidation processes (AOPs) are effective ways to degrade refractory organic contaminants, relying on the generation of inorganic radicals (e.g., •OH and SO4•−). Herein, a novel AOP with organic radicals (R-O•) was reported to degrade contaminants. Lanthanum cobaltite perovskite (LaCoO3) was used to activate peracetic acid (PAA) for organic radical generation to degrade sulfamethoxazole (SMX). The results show that LaCoO3 exhibited an excellent performance on PAA activation and SMX degradation at neutral pH, with low cobalt leaching. Meanwhile, LaCoO3 also showed an excellent reusability during PAA activation. In-depth investigation confirmed CH3C(O)O• and CH3C(O)OO• as the key reactive species for SMX degradation in LaCoO3/PAA system. The presence of Cl− (1–100 mM) slightly inhibited the degradation of SMX in the LaCoO3/PAA system, whereas the addition of HCO3− (0.1–1 mM) and humic aid (1–10 mg/L) could significantly inhibit SMX degradation. This work highlights the generation of organic radicals via the heterogeneous activation of PAA and thus provides a promising way to destruct contaminants in wastewater treatment.

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Section: Resultssupporting

confidence: 71%

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

Zhou

Zhang

et al. 2020

Molecules

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“…IPA-Cu NCs powder was obtained due to the steeply decreasing dissolution of GSH-Cu NCs during organic solvent-evaporating processes; thus, aggregation structure easily collapsed when the water-soluble Cu NCs powder absorbed water from an environment with high humidity [16]. In the XPS spectrum of Cu 2p electrons in IPA-Cu NCs powder-1, the signal peaks at 934.7 eV, 943.3 eV and 954.5 eV represented the signal of the Cu(II) characteristic peak, which showed that oxidation also affects the fluorescence stability in addition to water absorption (Figure 2d) [37][38][39][40].…”

Section: Resultsmentioning

confidence: 99%

Cation Crosslinking-Induced Stable Copper Nanoclusters Powder as Latent Fingerprints Marker

et al. 2021

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Luminescent copper nanoclusters (Cu NCs) have shown great potential in light-emitting devices (LEDs), chemical sensing, catalysis and biological fields. However, their practical use has been restricted by poor stability, and study on the stability of Cu NCs solid powder along with the mechanism is absent. In this study, stablized Cu NCs powder was first obtained by cation crosslinking method. Compared with the powder synthesized by solvent precipitation method, the stability of Cu NCs powder crosslinked by ionic inducer Ce3+ was enhanced around 100-fold. The storage time when the fluorescence intensity decreased to 85% (T85) was improved from 2 h to 216 h, which is the longest so far. The results of characterizations indicated that the aggregation structure was formed by the binding of Ce3+ with the capping ligands of Cu NCs, which helped in obtaining Ce-Cu NCs powder from aggregate precipitation in solution. Furthermore, this compact structure could avoid the destruction of ambient moisture resulting in long-lasting fluorescence and almost unchanged physical form. This demonstrated that phosphor, with excellent characteristics of unsophisticated synthesis, easy preservation and stable fluorescence, showed great potential in light sources, display technology and especially in latent fingerprints visualization on different substrates for forensic science.

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“…In the high-resolution XPS spectra of Cu 2p, the signal could be divided into six peaks at around 932.8, 934.5, 941.6, 943.7, 952.6, and 954.2 eV. The main peaks at binding energies of 934.5, 954.2, and 941.6 eV are attributed to the Cu(II) oxide species, 33 , 50 and the peaks appearing at the binding energies of 932.8, 943.7, and 952.6 eV are assigned to the Cu 2p 3/2 and Cu 2p 1/2 characteristic peaks of Cu(I), respectively. 51 − 53 No Cu(I) could be detected on the surface of the fresh CuAl 2 O 4 because only Cu(II) can be formed on the surface of particles under the conditions of high-temperature calcination.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Oxidation and Sequestration of Arsenic(III) from Aqueous Solution by Copper Aluminate with Peroxymonosulfate: A Fast and Efficient Heterogeneous Process

Liu

Yang

et al. 2021

ACS Omega

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The major problem in arsenic (As(III)) removal using adsorbents is that the method is time-consuming and inefficient owing to the fact that most of the adsorbents are more effective for As(V). Herein, we report a new discovery regarding the significant simultaneous oxidation and sequestration of As(III) by a heterogeneous catalytic process of copper aluminate (CuAl 2 O 4 ) coupled with peroxymonosulfate (PMS). Oxidation and adsorption promote each other. With the help of the active radicals, the As(III) removal efficiency can be increased from 59.4 to 99.2% in the presence of low concentrations of PMS (50 μM) and CuAl 2 O 4 (300 mg/L) in solution. CuAl 2 O 4 /PMS can work effectively in a wide pH range (3.0−9.0). Other substances, such as nitrate, sulfate, chloride, carbonate, and humic acid, exert an insignificant effect on As(III) removal. Based on X-ray photoelectron spectroscopy (XPS) analysis, the exposed reductive copper active sites might drive the redox reaction of Cu(II)/Cu(I), which plays a key role in the decomposition of PMS and the oxidation of As(III). The exhausted CuAl 2 O 4 could be refreshed for cycling runs with insignificant capacity loss by the combined regeneration strategy because of the stable spinel structure. According to all results, the CuAl 2 O 4 /PMS with favorable oxidation ability and stability could be employed as a promising candidate in real As(III)-contaminated groundwater treatment.

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Efficient degradation of sulfamethoxazole by the CuO@Al2O3 (EPC) coupled PMS system: Optimization, degradation pathways and toxicity evaluation

Cited by 248 publications

References 53 publications

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

Activation of Peracetic Acid with Lanthanum Cobaltite Perovskite for Sulfamethoxazole Degradation under a Neutral pH: The Contribution of Organic Radicals

Cation Crosslinking-Induced Stable Copper Nanoclusters Powder as Latent Fingerprints Marker

Simultaneous Oxidation and Sequestration of Arsenic(III) from Aqueous Solution by Copper Aluminate with Peroxymonosulfate: A Fast and Efficient Heterogeneous Process

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