Separation and Purification Technology, Journal Year: 2024, Volume and Issue: unknown, P. 129793 - 129793
Published: Sept. 1, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
Abstract The sustainable management of water resources is a critical global challenge, with advanced oxidation processes emerging as promising solution for addressing environmental pollution. However, the clear trade‐off between catalytic activity and stability in existing catalysts hinders their broader application. In this study, nanocrystalline/amorphous (N/A) microwire catalyst developed, featuring design that regulates nanocrystal size while preserving pure amorphous matrix. Unlike brittle annealed N/A microwires subjected to structural relaxation, as‐cast demonstrate outstanding performance oxidation. They can completely degrade pollutants within 60 s maintain up 40 reuse cycles. Theoretical calculations material characterizations reveal exceptional properties arise from combined effects residual stresses stored matrix synergistic effect nanocrystals phases. Moreover, optimally sized nanocrystalline phase optimizes atomic arrangement induces an structure low coordination number, providing abundant active sites. This also enhances adsorption characteristics persulfate accelerates electron transfer. These findings offer novel framework developing efficient stable wastewater treatment.
Language: Английский
Citations
17
Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown
Published: March 10, 2025
Abstract Double‐reaction‐centers (DRCs) Fenton‐like chemistry with low or zero oxidant addition has garnered increasing attentions due to their alignment the principles of green and sustainable development. However, regulation such processes remains a significant challenge, primarily deficiencies in microscopic interpretation electron migration mechanisms operating addition. In this work, iron single‐atom DRCs catalyst (Fe/N‐SAC) was prepared for internal‐driven system (zero addition) external‐driven (low peroxymonosulfate [PMS] addition). Results indicated absence dissolved oxygen activation PMS‐zreo Fe/N‐SAC system, single atoms acted as predominate acceptors extract electrons from electron‐donating pollutants valence decreasing +2.37 +2.07 they could also be recovered under O 2 atmosphere. contrast, transferred both PMS Fe/N‐SAC/PMS involving predominant transfer process (ETP) internal‐driven. Furthermore, two experimental devices based on core systems were designed achieve long‐term operation. These studies will complement catalytic module applications systems.
Language: Английский
Citations
4
Nano Research, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 3, 2024
Language: Английский
Citations
16
Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(42), P. 18496 - 18507
Published: Oct. 9, 2024
Advanced oxidation processes (AOPs) are rapidly evolving but still lack well-established protocols for reliably identifying oxidative reactive species (ORSs). This Perspective presents both the radical and nonradical ORSs that have been identified or proposed, along with extensive controversies surrounding mechanisms. Conventional identification tools, such as quenchers, probes, spin trappers, might be inadequate analytical demands of systems in which multiple coexist, often yielding misleading results. Therefore, challenges these complex, short-lived, transient must fully acknowledged. Refining methods is necessary, supported by rigorous experiments innovative paradigms, particularly through kinetic analysis based on situ spectroscopic techniques multiple-probe strategies. To demystify complex ORSs, future efforts should made to develop advanced tools strategies enhance mechanism understanding. In addition, integrating real-world conditions into experimental designs will establish a reliable framework fundamental studies, providing more accurate insights effectively guiding design AOPs.
Language: Английский
Citations
16
Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 360, P. 124538 - 124538
Published: Aug. 27, 2024
Language: Английский
Citations
12
Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122623 - 122623
Published: Oct. 11, 2024
Language: Английский
Citations
12
Water Research, Journal Year: 2024, Volume and Issue: 268, P. 122621 - 122621
Published: Oct. 11, 2024
Conventional heterogeneous Fenton-like systems employing different peroxides have been developed for water/wastewater remediation. However, a large population of consumed during various with low utilization efficiency and associated secondary contamination become the bottlenecks their actual applications. Recent strategies lowering peroxide consumptions to develop economic are primarily devoted effective radical generation subsequent high-efficiency through catalysts/systems engineering, leveraging emerging nonradical oxidation pathways higher selectivity longer life reactive intermediate, as well reactor designs promoting mass transfer decomposition improve yield radicals/nonradicals. comparative review summarizing mechanisms these has not yet published. In this review, we endeavor showcase designated achieving reduction while ensuring high catalytic activity from perspective above strategic mechanisms. An in-depth understanding aspects will help elucidate key consumption. Finally, existing problems put forward, new ideas research directions consumption proposed promote application in wastewater purification.
Language: Английский
Citations
11
Water Research, Journal Year: 2024, Volume and Issue: 272, P. 122960 - 122960
Published: Dec. 11, 2024
Language: Английский
Citations
11
Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown
Published: March 10, 2025
Double-reaction-centers (DRCs) Fenton-like chemistry with low or zero oxidant addition has garnered increasing attentions due to their alignment the principles of green and sustainable development. However, regulation such processes remains a significant challenge, primarily deficiencies in microscopic interpretation electron migration mechanisms operating addition. In this work, iron single-atom DRCs catalyst (Fe/N-SAC) was prepared for internal-driven system (zero addition) external-driven (low peroxymonosulfate [PMS] addition). Results indicated absence dissolved oxygen activation PMS-zreo Fe/N-SAC system, single atoms acted as predominate acceptors extract electrons from electron-donating pollutants valence decreasing +2.37 +2.07 they could also be recovered under O2 atmosphere. contrast, transferred both PMS Fe/N-SAC/PMS involving predominant transfer process (ETP) internal-driven. Furthermore, two experimental devices based on core systems were designed achieve long-term operation. These studies will complement catalytic module applications systems.
Language: Английский
Citations
2
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(40)
Published: July 15, 2024
Abstract The electro‐Fenton (EF) process is an advanced oxidation technology with significant potential; however, it limited by two steps: generation and activation of H 2 O . In contrast to the production via electrochemical two‐electron oxygen reduction reaction (ORR), three‐electron (3e − ) ORR can directly activate molecular yield hydroxyl radical (⋅OH), thus breaking through conceptual operational limitations traditional EF reaction. Therefore, 3e a vital for efficiently producing ⋅OH in situ, charting new path toward development green water‐treatment technologies. This review summarizes characteristics mechanisms ORR, focusing on basic principles latest progress situ efficient utilization modulation pathway, shedding light rational design catalysts, mechanistic exploration, practical applications water treatment. Finally, future developments challenges efficient, stable, large‐scale are discussed based achieving optimal regulation potential combine other
Language: Английский
Citations
9