ACS Omega
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2025
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IF 4.3
Xiao-Feng Xu,Zhao-Jian Li,Zhen Zhang,Shuai-Yu Wu,Kai-Zhen Yuan,Lu-Yao Wang,Yun-Ze Long,Hong-Di Zhang
Triboelectric catalysis is a new technology that converts mechanical energy to chemical energy. This study presents a novel efficient triboelectric catalytic design based on iron (Fe0) and polytetrafluoroethylene (PTFE). The tribocatalytic effect was evaluated by degrading methyl orange (MO), crystal violet (CV), and tetracycline (TC). The degradation efficiency can reach 95, 97, and 93% within 24 min, respectively, and the kinetic constant K of CV was as high as 0.1460 min–1. The comparison with the stirring experiment showed that the friction catalytic effect between Fe0 and PTFE was significantly enhanced under ultrasonic irradiation. Furthermore, the triboelectric effect is used to provide simplicity and strong triboelectric catalytic activity of Fe0/PTFE, and the influencing factors are analyzed. And the production of reactive oxygen species (ROS) of hydroxyl radicals and superoxide radicals increases during the catalytic process. The mechanism of triboelectric catalysis is discussed in terms of electron transfer and transition. This study utilizes the triboelectric effect of Fe0/PTFE to provide simplicity and superior triboelectric catalytic activity under ultrasonic irradiation.
研究领域:
环境科学
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材料科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Zhuo-Xuan Li,Min Zhao,Zhao-Jian Li,Zhen Zhang,Xiao-Feng Xu,Yun-Ze Long,Hong-Di Zhang
In this study, an ultrasonic-assisted Fe0/FeOOH triboelectric catalytic system was proposed that converts mechanical energy into electrical energy, which is subsequently converted into chemical energy for the degradation of organic pollutants. The Fe0/FeOOH system exhibits high efficiency, achieving degradation rates of 99.3%, 97.1%, 96.9%, and 88.2% for crystal violet (CV), tetracycline (TC), oxytetracycline (OTC), and chloramphenicol (CHL), respectively, within 15 min. The kinetic constant K for CV degradation is 0.3301 min–1. The triboelectric catalytic degradation efficiency of Fe0/FeOOH increased by more than 300% compared to the single catalyst. EPR and radical scavenging experiments confirm the generation of reactive oxygen species (ROS), including hydroxyl radicals (•OH) and superoxide radicals (•O2–). A model of an electron cloud-potential well is presented to clarify the triboelectric catalysis mechanisms based on the extent of electron cloud overlap and the frequency of charge transfer. LC-MS analysis detected the molecular ion peak of Michler’s ketone (m/z 269, [M + H]+), which, together with the UV–vis peak at 376 nm, supports the conjugated structure cleavage pathway of CV. Furthermore, the Fe0/FeOOH system maintains excellent catalytic performance at high temperatures, demonstrating strong high-temperature resistance, laying a foundation for its practical application.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2013
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IF 3.473
Jinhua Wu,Weizhao Yin,Jingjing Gu,Ping Li,Xiangde Wang,Bo Yang
Batch experiment was conducted to evaluate the capability of a biotic Fe 0 –H 2 O for nitrobenzene (NB) removal from groundwater. In this study, iron dosage was 0.25 g L −1 throughout the whole experiment and the Fe 0 –H 2 O system was amended with 180 mg L −1 VSS of mixed culture. The biotic system was tested at low concentrations (50 mg L −1 as COD) of organic substrates (e.g., ethanol, glucose and sodium acetate) and different concentrations of sulfate, nitrate and dissolved oxygen. The bio-iron system exhibited higher NB removal rate and more AN production. The increasing order of efficiency of tested substrates was: glucose > sodium acetate > ethanol. A complicated enhancement from oxygen was obtained, with 100% of NB removal rate and without any AN accumulation in the solution amended by dissolved oxygen. Sulfate and nitrate functioned as inhibitors since they competed with NB for electron donors (H 2 ), and nitrate showed more significant suppression on NB removal as compared to sulfate. AN elimination occurred during both sulfate-reducing and nitrate-reducing processes and microorganisms got extra reduction capacity from the degradation of AN to reduce nitrate and sulfate, causing the mineralization of NB under anaerobic or anoxic conditions. It suggested that the bio-iron treatment could function as a simplified process for the remediation of groundwater contaminated by combined NB and sulfate, nitrate.
研究领域:
环境科学
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微生物学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Jie Ye,Yue Lai,Chao Wang,Raymond Jianxiong Zeng,Changgeng Liu,Hao Lin,Shungui Zhou,Zhen He
Sulfate radical ( SO 4 · - )-based advanced oxidation processes (SR-AOPs) are promising for sludge dewatering. In this work, an electrochemically driven Fe 0 -activated sulfite system (E/Fe/sulfite) was developed and demonstrated for sustainably releasing Fe 2+ to activate sulfite for dewatering waste activated sludge. Under the optimal conditions (sulfite dosage = 40 mg/g dry solids, current density = 30 mA/cm 2 , pH = 6, and time = 60 min), the reduction of capillary suction time and water content of sludge cake were 87.9 ± 2.8 % and 73.1 ± 0.8 %, respectively. The improved dewatering performance was attributed to the degradation of tightly-bound extracellular polymeric substances, along with the decreased live/dead cell ratio and the increased permeability of sludge flocs. The thermal effect (∼21–59 °C) in the E/Fe/sulfite system accelerated the release of intracellular proteins, which could be effectively degraded by the strong oxidizing SO 4 · - . The results also suggested that electrochemical oxidation and thermal effect in the E/Fe/sulfite system had a synergistic impact on improving sludge dewaterability. According to the density functional theory calculation, the hydrophobic amino acids produced from protein degradation were favorable for forming the drainage channels and enhancing sludge dewaterability. This study provides new insights for understanding the SR-AOPs and their applications to sludge treatment.
研究领域:
环境科学
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污水处理
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2024
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IF 9.7
Liushan Jiang,Yue Zhang,Shiyu Huang,Jingwen Niu,Huanhuan Liu,Shuai Yuan,Qingxiang Zhou
Polycyclic aromatic hydrocarbons (PAHs) and sulfur-containing heterocyclic aromatic hydrocarbons (PASHs) are typical organic pollutants that are commonly present in the environment. Due to the continuous accumulation and transfer in the food chain, they will pose a significant threat to human life and health. In the present work, a new method was constructed with a ternary magnetic nanocomposite (Fe 0 @MXene@COF-LZU1) based magnetic solid phase extraction in combination with gas chromatography-tandem mass spectrometry (GC-MS/MS) for sensitive determination of them at trace level in Chinese tea samples. The magnetic nanomaterial Fe 0 @MXene@COF-LZU1 was synthesized via reduction and Schiff base reactions. The experimental results demonstrated that Fe 0 @MXene@COF-LZU1 had high adsorption ability and satisfactory chemical stability. Under the optimal experimental conditions, the method possessed good linearity in the concentration ranges of 0.0005 μgL −1 - 50 μg L −1 for dibenzothiophene (DBT), phenanthrene (PHE), fluoranthene (FLT) and pyrene (PYR), and 0.001 μg L −1 - 50 μg L −1 for 4-methyldibenzothiophene (4-MDBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). The detection limits of this method were in the range of 0.014 ng L −1 -0.83 ng L −1 . The results of real samples demonstrated that the designed magnetic nanocomposite had a promising application prospect for measuring PAHs and PASHs.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Yuwei Pan,Hongjin Guo,Minghua Zhou,Ying Zhang,Yusi Tian,Wei Wang
This study presents a novel pre-magnetized Fe 0 /ethylenediaminetetraacetic acid/air (pre-Fe 0 /EDTA/air) Fenton-like system to remove sulfamethazine (SMT). SMT removal only reached 10.6% in pre-Fe 0 /air system (0.2 g L −1 , SMT 3 mg L −1 , pH 5) while reached 88.5% in pre-Fe 0 /EDTA/air system within 1 h (0.2 g L −1 , SMT 3 mg L −1 , EDTA 2 mM, pH 5). EDTA could combine with Fe II or Fe III to keep iron soluble in the solution and the fast activation of molecular oxygen by Fe-EDTA complex could induce the fast and more production of H 2 O 2 . It was found that much more H 2 O 2 (5.1 mg L −1 ) and OH radical (26.4 μM) were produced in the pre-Fe 0 /EDTA/air system than in the pre-Fe 0 /air system (0.06 mg L −1 , 0.6 μM) within 1 h. The degradation rate of SMT (1 0 3 ) in pre-Fe 0 /EDTA/air system (38.4 min −1 ) was also 2.3 times as large as that in the Fe 0 /EDTA/air system (17.0 min −1 ), owing to the fast corrosion rate of pre-Fe 0 . 81.5 mgL −1 total Fe ions could be generated in pre-Fe 0 /EDTA/air while 53.6 mg L −1 in Fe 0 /EDTA/air. Fe 0 dosage (0.05–0.8 g L −1 ) and EDTA dosage (0–8 mM) were optimized and the optimal dosage for Fe 0 and EDTA was 0.2 g L −1 and 2 mM, respectively. The degradation rate of SMT in pre-Fe 0 /EDTA/air system were 1.6–2.9 times at different initial pH (3–6) and 2.3–3.1 times in the presence of inorganic ions (SO 4 2− , Cl − and HCO 3 − ) and natural organic matter (NOM) compared with Fe 0 /EDTA/air system. Decrease of Fe 0 contact angle in the presence of magnetization and EDTA enhanced the corrosion rate of Fe 0 . Accordingly, pre-Fe 0 /EDTA/air system would be a cost-effective and promising eco-friendly alternative for removal of SMT.
研究领域:
环境科学
·
水处理技术
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Xiaoqin Chen,Jinhui Pei,Yige Guo,Yanxiao Ning,Qiang Fu
Metal exsolution from perovskite oxides offers a promising approach to developing highly active catalysts. Voltage-driven exsolution achieves a faster rate and better dispersion of the nanoparticles. However, the impact of the external voltage on the dynamic of metal exsolution remains unclear. In this work, we utilized spatially resolved in situ X-ray photoelectron spectroscopy and photoemission electron microscopy to systematically investigate the effect of varied potentials on exsolution within one sample, where spatially graded potentials were applied on a La0.6Sr0.4FeO3−δ electrode. The dynamic characterizations reveal that the exsolution process includes pre-reduction and metal exsolution stages, with exsolution rate and degree modulated by the local surface potential. Potentials more negative than the critical potential at approximately −1.05 V can enhance oxygen vacancy formation and increase the exsolution rate and content of Fe0. This work establishes a direct correlation between the local surface potential and exsolution process and highlights the critical role of oxygen vacancies in voltage-driven exsolution.
研究领域:
材料科学
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电化学
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表面科学
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纳米技术
·
催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Yuwei Pan,Minghua Zhou,Jingju Cai,Yusi Tian,Ying Zhang
Sulfamethazine (SMT) is extensively used as growth promoters and antibacterial drugs. In this study, premagnetized Fe 0 was used to catalyze H 2 O 2 decomposition (pre-Fe 0 /H 2 O 2 ) in the presence of nitrilotriacetic acid (NTA) to remove SMT at neutral pH conditions. In all, 30.3% and 99.8% of SMT were removed by the pre-Fe 0 /H 2 O 2 process (60 min) and the pre-Fe 0 -NTA/H 2 O 2 process (30 min), respectively. The removal rate of SMT in the pre-Fe 0 -NTA/H 2 O 2 process was 2.5 times larger than that in the Fe 0 -NTA/H 2 O 2 process. Electron paramagnetic resonance signals indicated that more radicals were generated in the pre-Fe 0 -NTA/H 2 O 2 system. SMT and NTA and their degradation by-products adsorbed on pre-Fe 0 reduced the contact angle of the particle and prevented the formation of Fe 3 O 4 on the particle surface, thus accelerating Fe 0 corrosion. Tafel scan images confirmed the enhancement of Fe 0 corrosion in the presence of NTA and magnetic field. The Fe 0 corrosion rate (10 9 ) after 20 min of reaction was 6.61 cm/s in pre-Fe 0 -NTA/H 2 O 2 , much higher than that in Fe 0 /H 2 O 2 (0.73 cm/s), pre-Fe 0 /H 2 O 2 (1.47 cm/s) and Fe 0 -NTA/H 2 O 2 (2.94 cm/s). Pre-Fe 0 -NTA/H 2 O 2 could also keep the fast SMT removal with eight consecutive runs without the addition of pre-Fe 0 and NTA and presented high efficiency for SMT removal in real municipal wastewater .
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
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IF 6.735
Yuwei Pan,Minghua Zhou,Jingju Cai,Xiang Li,Wei Wang,Bing Li,Xuejie Sheng,Zhuoxuan Tang
Nowadays, Fenton (Fe 2+ /H 2 O 2 ) process is increasingly applied to wastewater treatment, however, the treatment efficiency would be inhibited largely when treated salty wastewater. To overcome this limitation, pre-magnetization (pre-magn-Fe 0 )/H 2 O 2 process was investigated to treat salty wastewater, which could enhance the degradation rate of organic pollutants (1.2–171.2 folds enhancement) and reduce reagents dosage (save 75% H 2 O 2 ) in salty system compared with Fe 0 /H 2 O 2 process, using Orange G as the target pollutant and Na 2 SO 4 as the model salty system. The characterizations by SEM, XRD and XPS and the intensity of DMPO–OH adduct signals in different processes confirmed this enhancement attributed to the increase of corrosion of Fe 0 inducing fast catalysis of H 2 O 2 and generation of hydroxyl radicals. Pre-magn-Fe 0 /H 2 O 2 process could also have 5.9, 26.4 and 93.7 folds enhancement in NaCl, NaNO 3 and Na 2 HPO 4 salty system, respectively. Meanwhile, pre-magn-Fe 0 /H 2 O 2 process could keep close performance in Na 2 SO 4 and NaCl salty systems and have better performance in NaNO 3 and Na 2 HPO 4 salty systems than Fenton process. Pre-magn-Fe 0 /H 2 O 2 process also had remarkable improvement (1.1–5.3 folds) on the removal of many refractory contaminants in salty system. Furthermore, it could also keep good performance in real reverse osmosis concentrated wastewater and petrochemical wastewater. Therefore, pre-magn-Fe 0 /H 2 O 2 process is a more cost-effective process to treat salty wastewater, which could have not only improved performance than conventional system and Fe 0 /H 2 O 2 process, but also good performance as Fenton process.
研究领域:
环境工程
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化学工程
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水处理技术
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高级氧化技术
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2020
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IF 9.038
Yuwei Pan,Qi Wang,Minghua Zhou,Jingju Cai,Yusi Tian,Ying Zhang
In this study, UV irradiated photochemical reactions of oxalate (Ox) with premagnetized-Fe 0 (pre- Fe 0 ) as the catalyst was used to degrade sulfamethazine (SMT). Magnetic field promoted the release of iron ion from Fe 0 thus enhanced SMT and Ox removal in UV/pre- Fe 0 /Ox process. X-ray photoelectron spectroscopy demonstrated that the presence of UV and Ox promoted the transformation of Fe 3+ to Fe 2+ on Fe 0 , which enhanced the surface bound •OH (•OH surf ) generation. Ox inhibited the formation of iron (hydro)xides and enhanced the hydroxylation of Fe 0 surface. •OH surf was mainly responsible for SMT removal (44%), while UV direct photolysis and •OH in the solution both caused around 28% SMT removal. The process with Ox exhibited much higher efficiency in SMT degradation than that added with H 3 PO 4 , citric acid and ethylenediaminetetraacetic acid, which greatly expanded the chelate-modified Fenton processes and their treatment efficiency.
研究领域:
环境科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
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IF 5.774
Yuwei Pan,Zhuoyu Bu,Cunxing Sang,Hongjin Guo,Minghua Zhou,Ying Zhang,Yusi Tian,Jingju Cai,Wei Wang
Ethylenediaminetetraacetic acid (EDTA) was used to enhance pre-magnetized Fe 0 /H 2 O 2 process for sulfamethazine (SMT) removal at neutral pH. Only 19.4% SMT was removed in pre-Fe 0 /H 2 O 2 within 60 min at neutral pH while 90.6% SMT was removed after addition of 0.1 mM EDTA. Meanwhile, k (10 3 ) value for SMT removal in pre-Fe 0 -EDTA/H 2 O 2 was 1.3 folds larger than in Fe 0 -EDTA/H 2 O 2 . Single-factor experiments and response surface methodology (RSM) were used to optimize the system for SMT removal. Maximum k (10 3 ) value was 81.4 min −1 obtainning at conditions of Fe 0 0.28 g L −1 , EDTA 0.13 mM, and H 2 O 2 36.2 μM. The presence of EDTA and magnetization could inhibit the generation of iron oxides , reduce the contact angle of Fe 0 , and improve the recovery of surface Fe II which induced a faster catalytic decomposition of H 2 O 2 . The system could still achieve good performance for removing SMT after six consecutive reaction cycles. These results demonstrated that pre-Fe 0 -EDTA/H 2 O 2 system has the potential application for wastewater treatment .
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
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IF 5.31
Xiang Li,Minghua Zhou,Yuwei Pan,Liting Xu
The abatement of chlorophenols is of great environmental importance. Though Fe 0 can activate persulfate (PS) to improve performance, our findings proved that pre-magnetized Fe 0 (Pre-Fe 0 ) could significantly enhanced the degradation and dechlorination of 2,4-dichlorophenol (2,4-DCP), and this Pre-Fe 0 /PS process was more efficient than Fe(II)/PS. The Fe 0 before and after magnetization was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), suggesting the acceleration of Fe 2+ release after magnetization. The effects of some important operating parameters such as Fe 0 dosage, PS dosage, pH, and initial 2,4-DCP concentration on the 2,4-DCP degradation and dechlorination by Pre-Fe 0 /PS were investigated and compared with that of Fe 0 /PS, observing a 1.9–5.2-fold enhancement in the degradation rate of 2,4-DCP. Although SO 4 − was the dominant active species responsible for 2,4-DCP degradation in two processes, pre-magnetization could promote more OH generation. Identified by GC–MS and IC, the degradation intermediates such as 4-chlorophenol (4-CP), 2-chlorophenol (2-CP), phenol, and some carboxylic acids were detected, and possible degradation pathway was proposed. This Pre-Fe 0 /PS process was also efficient for 4-chlorophenol and chlorobenzene degradation, obtaining a 5.2 and 3.2 folds enhancement, respectively. This work demonstrated that such a Pre-Fe 0 /PS would be very promising and environmental-friendly for organics degradation and dechlorination since pre-magnetization required no extra energy source while the introduction of Pre-Fe 0 was rather simple and no need to change the present treatment system.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）