Hydrogen bonds between the oxygen-containing functional groups of biochar and organic contaminants significantly enhance sorption affinity

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 156654 - 156654

Published: Oct. 13, 2024

Language: Английский

---

Aeration‐Free Photo‐Fenton‐Like Reaction Mediated by Heterojunction Photocatalyst toward Efficient Degradation of Organic Pollutants

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

The regulation of peroxymonosulfate (PMS) activation by photo-assisted heterogeneous catalysis is under in-depth investigation with potential as a replaceable advanced oxidation process in water purification, yet it remains significant challenge. Herein, we demonstrate strategy to construct polyethylene glycol (PEG) well-coupled dual-defect V

Language: Английский

---

TiO2 nanotubes immobilized on polyurethane foam as a floating photocatalyst for water treatment

Catalysis Today, Journal Year: 2024, Volume and Issue: 436, P. 114725 - 114725

Published: April 15, 2024

We investigated the photocatalytic activity of TiO2 nanoparticles (TiO2-NPs) and nanotubes (TiO2-NTs) supported on a floating polyurethane (PU) foam for removing Bisphenol A (BPA) as model pollutant. fabricated TiO2-NPs by sol-gel method TiO2-NTs ultrasound-assisted hydrothermal method. Subsequently, photocatalysts were immobilized onto PU through wet chemical deposition process. The synthesized characterized contact angle, SEM-EDS, TEM, XRD, DRS, BET analyses. successfully deposited foam, creating denoted TiO2-NPs@PU TiO2-NTs@PU. Our findings indicated that nanotubular structure enhanced removal efficiency BPA relative to nanoparticles, resulting in complete pollutant over 180 min simulated sunlight irradiation. TiO2-NTs@PU was also stable after five reuse cycles. Moreover, h+ main scavenging reactive species during photocatalysis with

Language: Английский

---

Reversible Sol–Gel Transitions Mediated Organics Selective Uptake and Release for Simultaneous Water Purification and Chemicals Recovery

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

The separation and recovery of useful organics from wastewater have been a promising alternative to tackling water pollution resource shortages, while strategies that truly work rarely explored. Herein, reversible CO2 triggered sol–gel state transformation mediated selective uptake-release system using surface modified carbonitride (S-CN) is proposed exhibits remarkable performance wastewater. Results show can serve as cross-linker for linking S-CN particles form hydrogel by electrostatic interaction hydrogen bonding, which be recycled the pristine sol simply removing cross-linked with Ar purging. achieves nearly complete uptake valuable high selectivity at first sol-to-gel stage through interaction, π–π interactions together, it recovers 90% uptaked releasing them into concentrated solution second gel-back-to-sol stage.

Language: Английский

---

O‐Bridged Co‐Cu Dual‐Atom Catalyst Synergistically Triggers Interfacial Proton‐Coupled Electron Transfer: A New Approach to Sustainable Decontamination

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract Heteroatom‐bridged dual‐atom catalysts (DACs), featuring more flexible active sites and intermetallic interaction, provide an opportunity for sustainable environmental remediation. Herein, innovative oxygen‐bridged Co‐Cu DAC supported on nano‐alumina (CoOCu‐DAC) is fabricated using a straightforward two‐step process. The as‐prepared catalyst significantly enhances both decontamination kinetics peroxymonosulfate (PMS) utilization efficiency by 1–3 orders of magnitude toward monoethanolamine (MEA, p K = 9.5) compared to Co single‐atom (Co‐SAC) bulk metal catalysts, largely outperforms previously reported systems. In‐situ ATR‐FTIR theoretical investigations reveal that the secondary introduction Cu plays multiple important roles: it activates lattice oxygen trigger key proton transfer (PT) MEAH + via nucleophilic attack at interface subsequently favors deprotonated MEA as efficient electron donor accelerate (ET) enhancing orbital overlaps co‐activation O 2 PMS. Such stepwise proton‐coupled (PCET)‐enhanced catalytic pathway mediated CoOCu‐DAC fundamentally different from common route identified in Co‐SAC‐involved Fenton‐like system. established binary QSAR further substantiates universality PCET‐enhanced strategy versatile nitrogen‐containing organic compounds. This study offers new perspective water other related areas catalysis based rationalized design multifunctional atomic level.

Language: Английский

---

Novel aeration-free electro-Fenton system based on N, P self-doped carbon cathode and oxygen defect-rich Mn1.1Fe1.9O4 particle electrodes for efficient H2O2 generation and tetracycline degradation

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: 507, P. 145544 - 145544

Published: April 21, 2025

Language: Английский

---

Synergic solar interfacial evaporation with heterogenous electro-Fenton: A near zero-discharge approach for water purification

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163275 - 163275

Published: April 1, 2025

Language: Английский

---

Dissolved oxygen dependence of Microbe-Derived dissolved organic nitrogen dynamics during membrane biofilm-based linear alkylbenzene sulfonate mineralization

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151409 - 151409

Published: April 18, 2024

Language: Английский

---

Asymmetric defective sites-mediated high-valent cobalt-oxo species in self-suspension aerogel platform for efficient peroxymonosulfate activation

Water Research, Journal Year: 2024, Volume and Issue: 265, P. 122304 - 122304

Published: Aug. 23, 2024

Language: Английский

---

Reconstructing the electron and spin structures of nanoscale iron sulfide through a biosurfactant layer towards radical-nonradical co-dominant regime

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 672, P. 299 - 310

Published: June 5, 2024

Language: Английский

---