A multi-structural carbon nitride co-modified by Co, S to dramatically enhance mineralization of Bisphenol f in the photocatalysis-PMS oxidation coupling system

Guo, Dong; Wang, Yongqiang; Chen, Chen; He, Jiaqi; Zhu, Meilin; Chen, Jie; Zhang, Conglu

doi:10.1016/j.cej.2021.130035

Cited by 43 publications

(11 citation statements)

References 45 publications

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“…The SO 4 · – could be generated from both peroxydisulfate (PDS) and peroxymonosulfate (PMS) activations. But compared to the PDS, the PMS can be triggered more easily due to its asymmetric structure, and many approaches, including ultrasound, heating, light, electricity, and catalysts, can be efficient in activating the PMS to produce SO 4 · – . − …”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Huang

Liu

et al. 2021

ACS EST Eng.

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Lignocellulosic biomass wastes can be considered as renewable and abundantly available resources, but it is a big challenge to convert them into valuable products via environmentally friendly and cost-effective approaches. Herein, a facile twostep hydrothermal-pyrolysis method is developed to fully convert the lignocellulosic biomass wastes into N-doped biochar-stabilized Co nanoparticles (Co−N/biochar) and bio-oil enriched with valueadded small compounds. The as-synthesized Co−N/biochar, with uniform N doping and well-dispersed Co nanoparticles, presents favorable activities for activating peroxymonosulfate (PMS) to degrade refractory organic contaminants. The underlying PMS activation and pollutant degradation mechanism is illuminated with free radical quenching experiments and an electron paramagnetic resonance analysis. The nonradical pathway is demonstrated to be dominant in the pollutant degradation with the PMS/Co−N/ biochar system. The singlet oxygen ( 1 O 2 ) generated from PMS activation is identified as the main contribution species for the pollutant degradation process. This work will provide a new approach to fully convert the biomass wastes into bio-oil and functional biochar materials with prominent activities.

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Section: Introductionmentioning

confidence: 99%

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Huang

Liu

et al. 2021

ACS EST Eng.

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“…This is because acidic conditions contribute to the high metal ion leakage, which corresponds to previous reports . However, high levels of H + would be the remover of SO 4 – • and • OH . Then, at pH > 7.0, the degradation efficiency of CBZ has gradually decreased.…”

Section: Resultsmentioning

confidence: 99%

“…30 However, high levels of H + would be the remover of SO 4 −• and • OH. 31 Then, at pH > 7.0, the degradation efficiency of CBZ has gradually decreased. This results from SO 4 −• changing into • OH in the presence of OH − (eq 2) which leads to the reduced degradation efficiency of CBZ.…”

Section: Characterization Of Samplesmentioning

confidence: 99%

Trace Sulfur Accelerated Peroxydisulfate Activation Based on a ZIF-67-Derived Nanostructure for Carbamazepine Degradation

Huang

Liu

Zhu

et al. 2022

ACS Appl. Nano Mater.

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Sulfate-radical-based wastewater treatment has received great interest due to its high-level efficiency. However, the preparation of stable and recyclable nanocatalysts remains a challenge. Herein, a highly efficient catalyst (FeCo/SC) for persulfate activation is successfully synthesized via dispersing S and Fe into carbon skeletons derived from ZIF-67. After the introduction of S, FeCo/SC exhibited excellent catalytic performance. With the action of SO 4 −• , Fe(VI), and 1 O 2 , the degradation efficiency of carbamazepine (CBZ) (10 mg L −1 ) could be up to 97.9 ± 2% within 10 min. The results showed that the larger surface area after S doping decreases the electron transfer resistance. The S 0 /S 2− is beneficial for promoting the Fe(III)-to-Fe(II) and Co(III)-to-Co(II) conversion cycle. Moreover, the liquid chromatograph-mass spectrometer (LC-MS), density functional theory (DFT), and ecological structure−activity relationships (ECOSAR) revealed the possible degradation pathway of CBZ, which was a toxicity attenuation process. In consequence, this work offers an innovative scheme for researching the effect of trace S-doped bimetallic oxide nanoparticles on PDS heterogeneous catalytic systems.

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“…72 This adsorption can facilitate the occurrence of electron transfer pathways on carbon-based materials and potentially enhance the adsorption of PMS, leading to synergistic effects between different sites. 131 However, there are currently few studies on the adsorption behavior of OCs on catalysts in theoretical calculations. Future work should fully consider the influence of OC adsorption in order to gain a comprehensive understanding.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to investigating vulnerable sites in molecules and the changes in the free energy of intermediates, it is valuable to discuss the adsorption of OCs by Co-based catalysts, as it reduces the attack distance of ROS . This adsorption can facilitate the occurrence of electron transfer pathways on carbon-based materials and potentially enhance the adsorption of PMS, leading to synergistic effects between different sites . However, there are currently few studies on the adsorption behavior of OCs on catalysts in theoretical calculations.…”

Section: Summary and Outlookmentioning

confidence: 99%

Current Mechanism of Peroxymonosulfate Activation by Cobalt-Based Heterogeneous Catalysts in Degrading Organic Compounds

et al. 2023

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Persulfate based advanced oxidation processes (PS-AOPs) have been regarded as a mainstream degradation technology of organic compounds due to their high efficiency in wastewater treatment. In particular, peroxymonosulfate (PMS) has a unique structure and chemical properties, which can be efficiently activated by Co-based catalysts to produce active species with a high oxidation potential. These active species usually determine the subsequent degradation of organic compounds in an efficient process, while the intrinsic reaction mechanism behind this complex process remains unclear and therefore impedes the continual development in this scientific community. Recently, density functional theory (DFT) calculations have emerged as a powerful means to identify the electronic properties and distinguish energy changes in the PMS activation system. With the assistance of this quantum calculation, increasing investigations have been conducted focusing on explaining the phenomenon that occurred in experiments. However, these calculations mainly contributed in part to the reaction mechanism of PMS activation by Co-based catalysts and sometimes even differ from each other, lacking a comprehensive summary based on DFT calculation results. In this review, we introduce the main uses of DFT in the catalytic activation of PMS, provide recent application of calculation examples of Co-based heterogeneous catalysts with different structures, and then discuss the mechanism of PMS activation in detail. Finally, the research results of the DFT method in this field are summarized, and the future research focus and challenges are put forward, which is conducive to guiding the practical design of Co-based catalysts and further application of PS-AOPs in creating value products.

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A multi-structural carbon nitride co-modified by Co, S to dramatically enhance mineralization of Bisphenol f in the photocatalysis-PMS oxidation coupling system

Cited by 43 publications

References 45 publications

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Trace Sulfur Accelerated Peroxydisulfate Activation Based on a ZIF-67-Derived Nanostructure for Carbamazepine Degradation

Current Mechanism of Peroxymonosulfate Activation by Cobalt-Based Heterogeneous Catalysts in Degrading Organic Compounds

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