APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Haoran Yu,Longgang Chu,Cheng Gu,Mingyang Xing
In this study, we present an effective modification strategy for cobalt ferrate (CoFe₂O₄), a cost-effective heterogeneous Fenton catalyst. Electron microscopic observation and X-ray diffraction results confirmed the successful hydrothermal synthesis of F-CoFe₂O₄/MoS₂. Notably, F-CoFe₂O₄/MoS₂ exhibited a high pollutant degradation efficiency (over 90 % within 30 min) across a broad pH range (4.0–9.0), along with excellent cyclic stability (up to 10 cycles) and environmental robustness. The effectiveness of the catalyst in treating real water samples and its performance in continuous-flow operations were also demonstrated. Fluorine (F) doping and integration with molybdenum sulfide (MoS₂) as a co-catalyst significantly facilitated metal ion release and promoted the formation of an acidic microenvironment on the catalyst surface, which accelerated Fe³ ⁺/Fe²⁺ cycling and enhanced CoFe₂O₄ performance in H₂O₂ activation and pollutant degradation. This work provides valuable insights for designing more efficient catalysts for heterogeneous Fenton oxidation systems in water treatment applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Jing Wang,Zhan-fang Cao,Hongshan Ren,Chao Yu,Shuai Wang,Liqing Li,Hong Zhong
Some Fenton Fe 3 O 4 catalysts have the problem that the catalytic performance gradually weakens with increasing number of cycles, which brings economic losses and treatment difficulties to industrial wastewater treatment. In this work, the cyclic catalytic performance of Fenton N-rGO/Fe 3 O 4 NPs catalysts for methylene blue (MB) has been enhanced by the reactivation process under the electric field. The effects of chemical reactions, voltage and electrolytic time on the cyclic performance of Fenton catalysts during the reactivation were discussed in detail. The first and fourth complete degradation of MB by fresh catalysts need 10 min and 20 min. After 2 h of reactivation using H 2 O as electrolyte at 1.0 V, the fourth complete degradation of MB only took 10 min. Zeta potential and CV curves showed that recovered catalyst has supplemented with surface electrons during the reactivation process. Characterizations demonstrated that the structure and composition of catalyst would not be influenced during the reactivation process. In short, the reactivation process under low voltage electric field is of great significance to Fenton Fe 3 O 4 catalysts in the field of industrial water treatment.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
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DOI
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
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2022
·Vol. 43
·期 2
·491-511
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IF 3.337
Huang Shaoyong,Huang Quanjia,Gan Jiaming,Li Ting,Wang Lei
In this study, Fe-rich sludge was pretreated by dielectric barrier discharge (DBD) and used as a Fenton catalyst for the degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) in aqueous solution, where hydrogen peroxide was in situ supplied from a glow discharge plasma (GDP) in contact with the solution. Synergistic mechanism of the two plasmas during 2,4-D degradation was explored. The Fe-rich sludge pretreated by H 2 -DBD could significantly accelerate the 2,4-D degradation as it converted Fe(III) in the sludge to the active Fe(II). 2,4-D can be completely removed in the presence of H 2 -DBD pretreated Fe-rich sludge with 25 min of GDP at pH 0 3.0 and catalyst dosage of 1.0 g/L. Quenching experimental studies showed that both ·OH (oxidative degradation) and ·H (reductive dechlorination) were responsible for 2,4-D degradation. Reducing radicals (such as ·R and·H) formed during GDP can continuously reduce the Fe 3+ back to Fe 2+ , which further promoted the degradation and dechlorination of 2,4-D. The results of three consecutive experiments indicated the stability and reusability of catalyst. This study provides a potential method for the recycle of Fe-rich sludge as a novel and cost-effective catalyst for 2,4-D removal from aqueous environments, which is significant for the terminal disposal of Fe-rich sludge. Graphical Abstract
研究领域:
环境科学
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废水处理
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化学工程
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DOI
高影响因子
Frontiers of Environmental Science & Engineering
·
2018
·Vol. 12
·期 6
·1-10
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IF 1.961
Mao Jie,Quan Xie,Wang Jing,Gao Cong,Chen Shuo,Yu Hongtao,Zhang Yaobin
Heterogeneous Fenton-like reaction has been extensively investigated to eliminate refractory organic contaminants in wastewater, but it usually shows low catalytic performance due to difficulty in reduction from Fe(III) to Fe(II). In this study, enhanced catalytic efficiency was obtained by employing Cu-doped BiFeO 3 as heterogeneous Fenton-like catalysts, which exhibited higher catalytic performance toward the activation of H 2 O 2 for phenol degradation than un-doped BiFeO 3 . BiFe 0.8 Cu 0.2 O 3 displayed the best performance, which yielded 91% removal of phenol (10 mg L –1 ) in 120 min. The pseudo first-order kinetic rate constant of phenol degradation in BiFe 0.8 Cu 0.2 O 3 catalyzed heterogeneous Fenton-like reaction was 5 times higher than those of traditional heterogeneous Fenton-like catalysts, such as Fe 3 O 4 and goethite. The phenol degradation efficiency could still reach 83% after 4 cycles, which implied the good stability of BiFe 0.8 Cu 0.2 O 3 . The high catalytic activity of BiFe 0.8 Cu 0.2 O 3 was attributed to the fact that the doping Cu into BiFeO 3 could promote the generation of Fe(II) in the catalyst and then facilitate the activation of H 2 O 2 to degrade the organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Jinghua Li,Jianbo Zhang,Xibin Jiao,Jiahua Shi,Jiangxue Ye,Kena Song,Jianfeng Bao,Guangda Li,Kun Lei
In this work, near-infrared (NIR) light driven concave octopod PtCu alloy nanocages (OPtCu-NCs) were fabricated and first developed as photothermal synergetic Fenton catalyst for degradation of pollutant dyes. Moreover, by irradiating with NIR laser (808 nm), the obtained OPtCu-NCs exhibit excellent NIR absorption capacity and thus produce hyperpyrexia over 50 °C. Concomitantly, by the photothermal effect, the OPtCu-NCs nanocatalysts was used for elimination of organic dyes such as Methylene blue (MB) and Rhodamine B (RhB). The NIR-driven photothermal degradation mechanism under NIR irradiation can be attributed to the Fenton-like catalytic performance of Cu ions , then -N C- and/or C-C bonds in the molecular skeleton were fractured and electrons were donated intensively. As confirmed by a typical radical trapping experiment, electrons trigger the formation of miscellaneous reactive species (O 2 - , HO 2 , especially •OH) subsequently . Moreover, the photothermal Fenton-catalytic activity of the as-prepared OPtCu-NCs had maintained at 93.15% (for MB) and 91.87% (for RhB) after ten circulating degradation processes. All acquired results reveal that the OPtCu-NCs have the potential applied value in dyestuff-wastewater treatment under neutral pH.
研究领域:
环境科学
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纳米材料
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催化化学
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DOI
高影响因子
ACS Nano
·
2023
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IF 17.1
Haoyang Fu,Ke Li,Chenfei Zhang,Jianghong Zhang,Jiyuan Liu,Xi Chen,Guoliang Chen,Yongyang Sun,Shuzhou Li,Lan Ling
Machine learning (ML) algorithms will be enablers in revolutionizing traditional methods of materials optimization. Here, we broaden the use of ML to assist the construction of Fenton-like single-atom catalysts (SACs) by developing a methodology including model building, training, and prediction. Our approach can efficiently extract synthesis parameters that exert a substantial influence on Fenton activity and accurately predict the phenol degradation rate k of SACs with a mean error of ±0.018 min–1. The extended synthesis window with accelerated learning enables the realization that the heating temperatures during SAC synthesis significantly influence the Fe–N coordination number, which ultimately dictates their performance. Through ML-guided optimization, a highly efficient SAC dominated by Fe–N5 sites with exceptional Fenton activity (k = 0.158 min–1) is identified. Our work provides an example for ML-assisted optimization of single-atom coordination environments and illuminates the feasibility of ML in accelerating the development of high-performance catalysts.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
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2019
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IF 6.395
Qiong Ouyang,Fangying Kou,Pokeung Eric Tsang,Jintao Lian,Jingyi Xian,Jianzhang Fang,Zhanqiang Fang
Iron-based catalysts (GFe0.5) were successfully prepared from tea polyphenols (TP) and ferric trichloride and used as a heterogeneous Fenton-like catalyst for the degradation of lincomycin (LCM). The results showed that a GFe0.5 dosage of 0.01 g/L could completely degrade a 20 mg/L concentration of LCM in 90 min, and assessment of the toxicity to luminous bacteria showed that the GFe0.5/H 2 O 2 system effectively reduced the toxicity risk posed by this pollutant. The results of transmission electron microscopy , X-ray diffraction (XRD), Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy and other characterisations showed that the synthetic material had a triangular structure similar to that of nonacarbonyldiiron, with Fe 2+ , Fe 3+ and organic groups attached to the triangular structure's surface. That is, the present environment-friendly synthesis produces an Fe-based material resembling a mixture of nonacarbonyldiiron and ferrous chloride. Free-radical capture and electron spin resonance experiments confirmed that ·OH was the main active free radical in the degradation mechanism of the iron-based material. Cyclic experiments, inductively coupled plasma and XRD characterisation of the materials after the reaction showed that the loss of free iron was the main reason for the decrease of activity. The free iron in the Fe-based material becomes bound during the reaction, which effectively avoids the excessive consumption of Fe 2+ in the prophase of the Fenton-like reaction, and is the key to both the efficient Fenton-like catalytic ability of GFe0.5, and to preventing the production of iron sludge .
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Jinghua Li,En Li,Shuang Zhang,Dongmei Yu,Jianping Wang,Pengshan Guo,Hongbo Sun
This paper presents the synthesis of hexagonal lily-like cuprous oxide‑platinum compound nanolilies (HCu 2 O-Pt NLs) and confirms their successful preparation using various characterization methods. These nano-enzymes possess remarkable photothermal ability, as irradiation under 808 nm near-infrared (NIR) laser causes a rapid temperature increase to about 50 °C. Furthermore, HCu 2 O-Pt NLs exhibited significantly enhanced Fenton catalytic activity for organic dye pollutant degradation compared to conventional photothermal catalysts, as demonstrated by Rhodamine B (RhB) degradation experiments. Additionally, HCu 2 O-Pt NLs demonstrated good photothermal stability, reusability, and non-toxicity to the environment, thereby highlighting their potential application in wastewater treatment .
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Fangxin Deng,Qingze Chen,Yanping Zhu,Xiaoliang Liang,Runliang Zhu,Yunfei Xi
Although various strategies have been developed to boost the reactivity of heterogeneous Fenton catalysts, integrating multiple strategies in one catalyst to achieve high Fenton reactivity is still a challenge. To tackle this issue, the ball-milled peat and magnetite (Mag) composites were hydrothermally treated to synthesize novel heterogeneous Fenton catalyst (i.e., Mag-HTP) for bisphenol A (BPA) removal. The degradation efficiency of BPA (30 mg/L) by H 2 O 2 (2 mmol/L) activated with 50 %Mag-HTP (0.2 g/L) was above 98% within 120 min at initial pH 3. The calculated degradation rate constant of Mag-HTP was 0.0873, which was 20.6 folds higher than that of Mag; moreover, it possessed high reactivity over a wide pH range (3–7) with low H 2 O 2 dosage (0.5–2 mM), and high reaction stability (eight cycles with degradation rate over 95%). The multiple reactive mechanisms were validated: (1) NMR/XPS spectra, H 2 O 2 decomposition, and HO production experiments proved the HTP as an electron donor could directly reduce Fe(III); (2) C-V curves proved the formed C-O-Fe bonds could lower the Fe(II)/Fe(III) redox potential; (3) Raman/EIS spectra, Tafel plot, and radical scavenging tests proved that HTP could serve as an electron shuttle for transferring electrons from H 2 O 2 to Fe(III); (4) NMR spectra proved the formed C-O-C bonds on HTP could function as the dual-reaction-center in Fenton reaction. These multiple mechanisms collectively contributed to the high reactivity of Mag-HTP in the Fenton reaction. Therefore, Mag-HTP shows great potential for practical applications in wastewater treatment and soil remediation due to its cost-effectiveness, easy separation, and high Fenton reactivity.
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
CHEMOSPHERE
·
2023
·
IF 8.8
Zilong Zhao,Shuyu Qi,Jianli Zhou,Yatao Ren,Kaiyun Zheng,Jin Zhang,Wenyi Dong,Hongjie Wang
To enhance the polarization distribution of electron cloud density on the catalyst surface, we have introduced a novel bimetallic-substituted dual-reaction center (DRC) catalyst (FeCo-γ-Al 2 O 3 ) comprising iron (Fe) and cobalt (Co) for the decomplexation and mineralization of heavy metal complex Ni-EDTA in this study. Compared to the catalysts doped solely with Fe or Co, the bimetal-doped catalyst offered several advantages, including enhanced electron cloud polarization distribution, additional electron transfer pathway, and improved capacity of free radical generation. Through DFT calculations and EPR tests, we have elucidated the influences of the catalyst's adsorption toward Ni-EDTA and its decomplexation products on the electron transfer between the pollutant and the catalyst. The competition between the pollutants and H 2 O 2 affects the generation of free radicals in both electron-rich Fe and Co centers as well as electron-deficient Al center. Building on these findings, we have proposed a plausible removal mechanism of Ni-EDTA using the heterogeneous Fenton-like catalyst FeCo-γ-Al 2 O 3 . This study sheds light on the potential of FeCo-γ-Al 2 O 3 as a DRC catalyst and emphasizes the significance of pollutant characteristics in determining the catalyst's performance.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
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2021
·
IF 5.485
Jing-Ying Yang,Guo-Yao Niu,Meng-Ke Li,Jiang-Jun Chen,Jun-Xia Wang,Shi-Qian Gao,Jian-Hua Wu,Xin Liu,San-Jian Ma,Zi-Xia Lin
A novel CHACF-JUC-505 system through the introduction of H 2 and Pd/JUC-505 into the classic Fenton system under normal temperature and pressure was developed in this work. Through the experiment of quenching hydroxyl radical (·OH) by methanol, the analysis of degradation intermediates and total organic carbon, it was confirmed from the reverse that the target pollutant sulfamethazine (SMT) could be quickly adsorbed by JUC-505. The activated hydrogen generated from the adsorbed and activated H 2 by Pd/JUC-505 accelerated the reduction of Fe III . It was confirmed that the continuous production of ·OH required only a trace amount of iron by the detection of para-hydroxybenzoic acid. The removal of SMT was further enhanced by the degradation of ·OH. The cleavage of S N bond was considered to be the major degradation pathway of SMT. The concentration of Fe II in the CHACF-JUC-505 system could be at least 14.72 μM. And the removal efficiency of SMT was about 96.77 %. That was 3 and 4.6 times that of the Fenton system in the same reaction condition, respectively. The effects of the dosage of ferrous ion, H 2 O 2 and Pd/JUC-505, initial concentration of SMT and pH, and the flow of H 2 were investigated. The robustness and morphological changes in Pd/JUC-505 were also systematically analyzed.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2021
·
IF 5.909
Peng Liu,Dengjie Zhong,Yunlan Xu,Nianbing Zhong,Guangjun He
Co/Fe co-doped porous graphite carbon (Co/Fe-PGC) nanocomposites were successfully prepared by one-step pyrolysis with CoFe-MOF, in which the Co/Fe nanoparticles were uniformly coated on porous graphite carbon derived from MOF. It was used to microelectrolysis-Fenton degrade rhodamine B through the main active substance ∙OH. The color and TOC removal rate of 100 mg/L rhodamine B reached 99.41% and 64.6%, respectively, for 30 min. Rhodamine B was degraded into small molecular organic acids, alcohols and lipids by N-demethylation and chromophore cleavage, until it was finally degraded into CO 2 and H 2 O, and no new colored organics were produced in the degradation process. The degradation process follows the first-order reaction kinetics, and its rate constant is much higher than that of the previous similar studies. The excellent catalytic performance of Co/Fe-PGC catalyst is attributed to the coupling effect of micro-electrolysis and Fenton reaction, and the acceleration of cobalt on electron transport and Fe 2+ reduction. Co 0 /Fe 0 undergoes galvanic corrosion to generate Co 2+ /Fe 2+ and H 2 O 2 , and then these products undergo Fenton reaction to generate Co 3+ /Fe 3+ and ∙OH, thus forming a circulating system of Co 3+ /Fe 3+ and Co 2+ /Fe 2+ , enhancing the activation of H 2 O 2 and ensuring the efficient degradation of RhB.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
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