Improvement of peroxymonosulfate utilization efficiency for sulfamethazine degradation by photo-electron activating peroxymonosulfate: Performance and mechanism

Qi, Lanyue; Zhang, Hao; Xiao, Chengming; Ni, Linhan; Chen, Saisai; Qi, Junwen; Zhou, Yiqiang; Zhu, Zhigao; Li, Jiansheng

doi:10.1016/j.jcis.2022.11.079

Cited by 29 publications

(6 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of MIL-125 were similar to the disk-like shape with a smooth and flat surface (Figure a) . The PC–COF exhibited a nanoflower assembled with orderly stacked carbon nanosheets, which was consistent with the morphology reported in the literature (Figure b) .…”

Section: Resultssupporting

confidence: 85%

“…Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of MIL-125 were similar to the disk-like shape with a smooth and flat surface (Figure 3a). 44 The PC−COF exhibited a nanoflower assembled with orderly stacked carbon nanosheets, which was consistent with the morphology reported in the literature (Figure 3b). 45 As shown in Figure 3c,d, considering the high reactivity between the carboxyl and the amino groups, the piperazine monomers were precoated on MIL-125 through an amination reaction.…”

Section: Acs Esandt Engineeringsupporting

confidence: 90%

“…The survey XPS spectra demonstrated the presence of C, N, O, and Ti and trace amounts of Cl in MOF@COF-2 (Figure S11a). The Ti 2p peak could be deconvoluted into two peaks representing Ti 2p 3/2 (457.59 eV) and Ti 2p 1/2 (463.17 eV) . Compared to MIL-125, an obvious negative shift illustrated the migration of local electron density, indicating electron transfer from the MOF to the PC–COF at the MOF@COF-2 interface (Figure i).…”

Section: Resultsmentioning

confidence: 99%

“…EDTA-2Na, KBrO 3 , isopropanol (IPA), and nitrogen (N 2 ) were utilized as photogenerated h + , e − , hydroxyl radical ( • OH), and dissolved oxygen (DO) scavengers, respectively. 44 In Figures 5a and S14a, the k for Cr(VI) reduction increased by adding EDTA-2Na in the single-Cr(VI) system, whereas it was obviously inhibited in the presence of KBrO 3 . The results revealed that the quenching of photogenerated h + could improve the separation and efficient utilization of the photogenerated e − for Cr(VI) reduction.…”

Section: Acs Esandt Engineeringmentioning

confidence: 95%

“…The Ti 2p peak could be deconvoluted into two peaks representing Ti 2p 3/2 (457.59 eV) and Ti 2p 1/2 (463.17 eV). 44 Compared to MIL-125, an obvious negative shift illustrated the migration of local electron density, indicating electron transfer from the MOF to the PC−COF at the MOF@COF-2 interface (Figure 3i). Moreover, the intensity of Ti 2p of MOF@COF-2 confirmed the conversion of carboxyl groups in MIL-125 and the successful formation of COF shells via covalent connection.…”

Section: Acs Esandt Engineeringmentioning

confidence: 99%

See 4 more Smart Citations

Enhanced Generation and Effective Utilization of Cr(V) for Simultaneous Removal of Coexisting Pollutants via MOF@COF Photocatalysts

Qi,

Zhou,

et al. 2024

ACS EST Eng.

Self Cite

View full text Add to dashboard Cite

Simultaneous removal of coexisting aqueous pollutants is urgently needed in the face of higher demands for wastewater purification. Using pollutant intermediates with strong oxidizing ability to degrade other coexisting pollutants is a novel, energy-saving, and environmentally friendly way. Increased generation and effective utilization of these intermediates are vital to boost the decontamination performance. Here, we fabricated a core−shell MOF@COF (MIL-125@PC−COF) heterojunction photocatalyst for the synergistic removal of Cr(VI) and the coexisting organic pollutant tetracycline (TC). The removal efficiency of TC and Cr(VI) in the coexistence system was increased by 2.1-and 1.1-fold compared to that in single-pollutant system, respectively. The unique heterojunction structure in the composite photocatalysts can hinder the recombination of photogenerated electrons and holes, thus promoting the production of Cr(V) from Cr(VI) reduction. Quenching tests, in situ variable-temperature electron paramagnetic resonance (EPR) analysis, and UV−vis absorbance verified the effective utilization of Cr(V) and its positive contribution to TC degradation. The mechanism of Cr(V) generation and utilization and its key role in dual-pollutant removal were clarified.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Acs Esandt Engineeringsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Acs Esandt Engineeringmentioning

confidence: 95%

Section: Acs Esandt Engineeringmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced Generation and Effective Utilization of Cr(V) for Simultaneous Removal of Coexisting Pollutants via MOF@COF Photocatalysts

Qi,

Zhou,

et al. 2024

ACS EST Eng.

Self Cite

View full text Add to dashboard Cite

show abstract

Using “waste” cotton-derived cellulose with different crystal structures to prepare nitrogen-doped carbon catalysts for activating peroxymonosulfate (PMS) to degrade Reactive Blue 19 “waste” water

Yang,

Yang

et al. 2024

Cellulose

View full text Add to dashboard Cite

Roles and mechanisms of carbonaceous materials in advanced oxidation coupling processes for degradation organic pollutants in wastewater: a review

Zou,

Wang,

Gao

et al. 2023

Biochar

View full text Add to dashboard Cite

The widespread organic pollutants in wastewater are one of the global environmental problems. Advanced oxidation processes (AOPs) are widely used because of their characteristics of high efficiency and strong oxidation. However, AOPs may have some defects, such as incomplete mineralization of organic pollutants and the generation of toxic by-products during the degradation process, thus it is essential to seek efficient and green wastewater treatment technologies. Coupling different AOPs or other processes is beneficial for the mineralization of pollutants and reduces ecological risks to the environment. It is worth noting that carbonaceous materials (CMs) have received widespread attention and application in the degradation of organic pollutants in water by advanced oxidation coupling processes (C-AOPs) due to their excellent physicochemical properties in recent years. However, the behaviors and mechanisms of C-AOPs based on CMs on the degradation of organic pollutants are still unknown. Therefore, it is essential to comprehensively summarize the recent research progress. In this review, the applications of different CMs in C-AOPs were reviewed first. Secondly, the synergistic mechanisms of the C-AOPs based on different CMs were discussed. Then, toxic intermediates were explored and important toxicity assessment methods were proposed. Finally, the application potential of the C-AOPs in the future and the challenges were proposed. This review provides an important reference for the application and optimization of the C-AOPs in organic wastewater treatment in the future. Graphical Abstract

show abstract

Improvement of peroxymonosulfate utilization efficiency for sulfamethazine degradation by photo-electron activating peroxymonosulfate: Performance and mechanism

Cited by 29 publications

References 66 publications

Enhanced Generation and Effective Utilization of Cr(V) for Simultaneous Removal of Coexisting Pollutants via MOF@COF Photocatalysts

Enhanced Generation and Effective Utilization of Cr(V) for Simultaneous Removal of Coexisting Pollutants via MOF@COF Photocatalysts

Using “waste” cotton-derived cellulose with different crystal structures to prepare nitrogen-doped carbon catalysts for activating peroxymonosulfate (PMS) to degrade Reactive Blue 19 “waste” water

Roles and mechanisms of carbonaceous materials in advanced oxidation coupling processes for degradation organic pollutants in wastewater: a review

Contact Info

Product

Resources

About