Selective Removal of Organic Pollutants in Groundwater and Surface Water by Persulfate-Assisted Advanced Oxidation: The Role of Electron-Donating Capacity

Liu, Xinru; Qin, Hehe; Xing, Siyang; Liu, Ying; Chu, Chengcheng; Yang, Dianhai; Duan, Xiaoguang; Mao, Shun

doi:10.1021/acs.est.3c04870

Cited by 40 publications

(1 citation statement)

References 58 publications

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“…47–49 Therefore, it is highly imperative to design and explore metal-free carbon catalysts for CaSO 3 activation in water decontamination. 50–56 For this purpose, herein, we report carbon nanotubes (CNTs) as an efficient catalyst and nanoreactor for activating CaSO 3 for water decontamination. First, the nanomorphology and nanostructure of CNTs were characterized in detail.…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Wang,

Liu,

Wang

et al. 2024

Environ. Sci.: Nano

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Section: Introductionmentioning

confidence: 99%

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Wang,

Liu,

Wang

et al. 2024

Environ. Sci.: Nano

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Coordination Number Regulation of Iron Single‐Atom Nanozyme for Enhancing H₂O₂ Activation and Selectively Eliminating Cephalosporin Antibiotics

Wang,

Zhang,

Guo

et al. 2024

Adv Funct Materials

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Nanozymes present promising alternatives to natural enzymes, but controlling nanozymes' performance and employing them for selectively removing antibiotics are extremely challenging. Employing theoretical calculations to design the coordination environments of mental and coordination atoms for directing single‐atom nanozymes synthesis emerges as a promising strategy to enhance their efficiency and selectivity in antibiotic elimination. In this study, the peroxidase‐like specificity of iron single‐atom nanozymes (FeSA‐Nx, x = 2,3, and 4) with specific Fe–N coordination numbers is demonstrated based on theoretical calculations. These calculations guide the synthesis of corresponding ultra‐thin FeSA‐Nx, achieving a high degree of consistency between theoretical predictions and experimental results. FeSA‐N3 with a Fe─N3 coordination number proves to be the most effective. The efficient electron transfer from Fe─N3 site to H2O2 reduces the free energy required for •OH generation. Quantitative structure‐activity relationship (QSAR) analysis reveals a strong positive correlation between degradation efficiency of cephalosporins and their electron‐donating capabilities (R2 = 0.820–0.929), realizing selectively eliminating cephalosporins. Integration FeSA‐N3 into ceramic membrane (FeSA‐N3/CM) improves hydrophilicity, achieving continuous and stable removal of cephalosporin. This study provides valuable insights into coordination number regulating nanozyme properties for selective antibiotics removal and offers novel perspectives for FeSA‐N3 application in integrated systems.

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Mass Transfer‐Enhanced Photothermal Membranes with Synergistic Light Utilization for High‐Turbidity Wastewater Purification

Fu,

Xiao,

Cao

et al. 2025

Angewandte Chemie

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The photo‐Fenton process faces significant limitations in treating high‐turbidity, colored wastewater due to light attenuation and impurity interference (blocked mass transfer). To address these issues, we developed a suspended photothermal Fenton membrane by loading a photothermal catalyst on a hydrophobically modified cotton filter paper, enabling precise suspension 1 mm below the water surface. This design achieved 89.49 % light utilization and high chemical oxygen demand (COD) removal, even in wastewater with extreme chromaticity (10 multiples) and turbidity (703 NTU). The enhanced photothermal conversion accelerated molybdenum co‐catalyzed Fenton reactions and improved peroxymonosulfate (PMS) activation, maintaining over 90 % phenol removal for 15 days. Mechanistic simulations revealed improved mass transfer of reactive oxygen species (ROS) and pollutants at the solid‐liquid interface, with PMS diffusion identified as the rate‐limiting step. The membrane resisted fouling from suspended solids and maintained stable operation in soil‐containing solutions for 10 days. This innovative approach offers an efficient solution for degrading pollutants in dark‐colored, high‐turbidity wastewater, overcoming traditional process limitations.

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Selective Removal of Organic Pollutants in Groundwater and Surface Water by Persulfate-Assisted Advanced Oxidation: The Role of Electron-Donating Capacity

Cited by 40 publications

References 58 publications

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Coordination Number Regulation of Iron Single‐Atom Nanozyme for Enhancing H₂O₂ Activation and Selectively Eliminating Cephalosporin Antibiotics

Mass Transfer‐Enhanced Photothermal Membranes with Synergistic Light Utilization for High‐Turbidity Wastewater Purification

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Selective Removal of Organic Pollutants in Groundwater and Surface Water by Persulfate-Assisted Advanced Oxidation: The Role of Electron-Donating Capacity

Cited by 40 publications

References 58 publications

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO3 activation

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO3 activation

Coordination Number Regulation of Iron Single‐Atom Nanozyme for Enhancing H2O2 Activation and Selectively Eliminating Cephalosporin Antibiotics

Mass Transfer‐Enhanced Photothermal Membranes with Synergistic Light Utilization for High‐Turbidity Wastewater Purification

Contact Info

Product

Resources

About

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Carbon nanotubes as a nanocatalyst and nanoreactor for the efficient treatment of pharmaceutical wastewater via CaSO₃ activation

Coordination Number Regulation of Iron Single‐Atom Nanozyme for Enhancing H₂O₂ Activation and Selectively Eliminating Cephalosporin Antibiotics