MgO-supported CuO with encapsulated structure for enhanced peroxymonosulfate activation to remove thiamphenicol

Dan, Jiabin; Rao, Pinhua; Wang, Qiongfang; Dong, Lei; Chu, Wenhai; Zhang, Min; He, Zedi; Gao, Naiyun; Deng, Jing; Chen, Juxiang

doi:10.1016/j.seppur.2021.119782

Cited by 30 publications

(11 citation statements)

References 73 publications

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“…However, the M/g-C3N4 with the largest SSA (58.47 m 2 /g) wa accumulated in the form of particles, illustrating that the relationship between SSA an the aggregation of catalyst was not linear. When compared with other materials, such a CuMg-MMO [40] and CuO-CN [45], the SSA, pore volume and average pore diameter the materials prepared in this article were all the best. As shown in Figure S2a, the removal efficiency of RhB increased from 36.88 to 99.90 at 5 min, and the k value raised from 0.0867 to 1.2916 min −1 with increasing catalyst dosag (Table S1).…”

Section: Betmentioning

confidence: 86%

“…However, the M/g-C 3 N 4 with the largest SSA (58.47 m 2 /g) was accumulated in the form of particles, illustrating that the relationship between SSA and the aggregation of catalyst was not linear. When compared with other materials, such as CuMg-MMO [40] and CuO-CN [45], the SSA, pore volume and average pore diameter of the materials prepared in this article were all the best.…”

Section: Betmentioning

confidence: 86%

“…EPR was carried out to verify ROS in the oxidation reactions. As shown in Figure 7a − signal [39,40,58], but the result of the quenching experiment had shown that SO 4…”

Section: Possible Activation Mechanisms Of Pmsmentioning

confidence: 95%

“…Within 3 min, the removal efficiency of RhB was 48.30, 71.80, 98.93, 73.80 and 66.70% for the molar ratios of copper to magnesium precursor of CM/g-C 3 N 4 of 1:0.25, 1:0.5, 1:1, 1:1.5 and 1:2, respectively. The sample was prone to agglomeration and produced other impurities as the molar ratio of copper to magnesium precursor increased or decreased [40]. It could be inferred that the crystal structure of CM/g-C 3 N 4 was well constructed in the 1:1 molar ratio of copper to magnesium precursor.…”

Section: Effect Of Preparation Procedures On the Catalytic Performanc...mentioning

confidence: 98%

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Enhanced Degradation of Rhodamine B through Peroxymonosulfate Activated by a Metal Oxide/Carbon Nitride Composite

Wang

Zhang

et al. 2022

Water

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The development of high catalytic performance heterogeneous catalysts such as peroxymonosulfate (PMS) activators is important for the practical remediation of organic pollution caused by Rhodamine B (RhB). An economical and facile synthesized composite of copper–magnesium oxide and carbon nitride (CM/g-C3N4) was prepared by the sol-gel/high-temperature pyrolysis method to activate PMS for RhB degradation. CM/g-C3N4 exhibited a splendid structure for PMS activation, and the aggregation of copper–magnesium oxide was decreased when it was combined with carbon nitride. The introduction of magnesium oxide and carbon nitride increased the specific surface area and pore volume of CM/g-C3N4, providing more reaction sites. The low usage of CM/g-C3N4 (0.3 g/L) and PMS (1.0 mM) could rapidly degrade 99.88% of 10 mg/L RhB, and the RhB removal efficiency maintained 99.30% after five cycles, showing the superior catalytic performance and reusability of CM/g-C3N4. The synergistic effect of copper and g-C3N4 improved the PMS activation. According to the analyses of EPR and quenching experiments, SO4•−, •OH and O2•− radicals and 1O2 were generated in the activation of PMS, of which SO4•− and 1O2 were important for RhB removal. The toxicity of RhB was alleviated after being degraded by the CM/g-C3N4/PMS system. This study provides an efficient and promising strategy for removing dyes in water due to the hybrid reaction pathways in the CM/g-C3N4/PMS system.

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Section: Betmentioning

confidence: 86%

Section: Betmentioning

confidence: 86%

“…EPR was carried out to verify ROS in the oxidation reactions. As shown in Figure 7a − signal [39,40,58], but the result of the quenching experiment had shown that SO 4…”

Section: Possible Activation Mechanisms Of Pmsmentioning

confidence: 95%

Section: Effect Of Preparation Procedures On the Catalytic Performanc...mentioning

confidence: 98%

See 2 more Smart Citations

Enhanced Degradation of Rhodamine B through Peroxymonosulfate Activated by a Metal Oxide/Carbon Nitride Composite

Wang

Zhang

et al. 2022

Water

View full text Add to dashboard Cite

show abstract

“…6c). This might be attributed to the fact that OH/SO 4 À could be consumed by H 2 PO 4 À (eqn ( 4) and ( 5)), 42,44,45 which was not conducive to the degradation of pollutants. In addition, H 2 PO 4 À can also react with Fe 2+ and Fe 3+ to form complex compounds (eqn ( 6) and ( 7)), thereby reducing the oxidation rate.…”

mentioning

confidence: 99%