COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Huanan Guan,Yanyu Chen,Yue Xue
The self-assembly approach has successfully been used to generate Fe 3 O 4 @Pt, a material that can mimic peroxidase . The material was created by modifying the surface of Fe 3 O 4 nanoparticles (Fe 3 O 4 NPs) with -NH 2 functional groups using 3-Aminopropyltriethoxysilane (APTES), and then using the coordination between platinum ions and -NH 2 on the surface of magnetic particles to reduce platinum ions to the surface of magnetic particles under ultrasonic conditions to produce Fe 3 O 4 @Pt composite nanoparticles . The Fe 3 O 4 @Pt core-shell composite material not only has the inert metal Pt to protect Fe 3 O 4 to improve the stability of Fe 3 O 4 in the biological matrix, but also has the high catalytic activity of Fe 3 O 4 and Pt. The catalysts were characterized, and the findings revealed that they were non-homogeneous Fenton catalysts with high dispersion, uniform particle size, and a large specific surface area . Since a large number of free radicals generated during the catalysis of Fe 3 O 4 @Pt mimic enzyme can trigger the Fenton reaction, tetracycline (TC) and oxytetracycline (OTC) were chosen as target substances, and a system for the combined degradation of tetracyclines pollutants by mimic enzyme and Fenton reaction was established, and the catalytic mechanism of this system has been investigated. The findings indicate that by using a concentration of 0.25 mol/L of H 2 O 2 , a catalyst amount of 1.5 g/L, a reaction time of 50 min, and a reaction temperature of 50°C, the degradation rate of TC and OTC can exceed 97 %, following first-order degradation kinetics. Under ideal conditions, over 95 % of each tetracyclines was degraded in the simulated food processing wastewater, effectively achieving tetracyclines degradation in the actual wastewater. In addition, the reusability of the recovered Fe 3 O 4 @Pt mimetic enzyme was investigated. The findings indicated that the Fe 3 O 4 @Pt mimetic enzyme has exceptional activity, stability, and reproducibility. The combination of the Fenton reaction with the Fe 3 O 4 @Pt mimetic enzyme can expedite the degradation of tetracyclines, offering a novel approach for eliminating recalcitrant contaminants in wastewater.
研究领域:
环境科学
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催化材料
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生物化学
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DOI
高影响因子
Separations
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2022
·Vol. 9
·期 4
·92
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IF 3.344
Mingming Wang,Feiyun Sun,Haojie Zeng,Xiaoli Su,Guofei Zhou,Hao Liu,Dingyu Xing
Catalytic membranes, as a combination of heterogeneous advanced oxidation and membrane technology reaction systems, have important application prospects in the treatment of dyes and other organics. In practical applications, it is still challenging to construct catalytic membranes with excellent removal efficiency and fouling mitigation. Herein, molybdenum disulfide-iron oxyhydroxide (MoS2-FeOOH) was fabricated using iron oxide and MoS2nanoflakes, which were synthesized by the hydrothermal method. Furthermore, by changing the concentration of MoS2-FeOOH, the MoS2-FeOOH/polyethersulfone (PES) composite ultrafiltration membrane was obtained with improved hydrophilicity, permeability, and antifouling capacity. The pure water flux of the composite membrane reached 385.3 L/(m2·h), which was 1.7 times that of the blank PES membrane. Compared with the blank membrane, with the increase of MoS2-FeOOH content, the MoS2-FeOOH/PES composite membranes had better adsorption capacity and catalytic performance, and the membrane with 3.0% MoS2-FeOOH content (M4) could be achieved at a 60.2% methylene blue (MB) degradation rate. In addition, the membrane flux recovery ratio (FRR) of the composite membrane also increased from 25.6% of blank PES membrane (M0) to more than 70% after two cycles of bovine serum albumin (BSA) filtration and hydraulic cleaning. The membrane with 2.25% MoS2-FeOOH content (M3) had the best antifouling performance, with the largestFRRand the smallest irreversible ratio (Rir). Catalytic self-cleaning of the composite membrane M3 recovered 95% of the initial flux with 0.1 mol/L H2O2cleaning. The MoS2-FeOOH/PES composite membranes with the functions of excellent rejection and antifouling capacity have a good prospect in the treatment of printing and dyeing wastewater composed of soluble dyes.Keywords:catalytic self-cleaning membrane;antifouling;MoS2;Fenton-like reaction
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
Coatings
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2023
·Vol. 13
·期 6
·1097
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IF 3.4
Xiaoqing Meng,Lin Wang,Ying Yang,Yuqi Song,Cansheng Yuan
Sulfamethoxazole (SMX) contamination in large quantities of wastewater can cause potential environmental problems. Due to difficulty in degrading SMX by natural processes, it is necessary to develop a novel technology to solve this problem. Advanced oxidation processes (AOPs) have been identified as methods with a high potential to treat recalcitrant organic pollutants. The nanoscale schwertmannite (nano-SWT) was prepared with an indoor-temperature synthesis method facilitated by polyvinylpyrrolidone (PVP). In this study, we performed a reaction of the nano-SWT materials with Fenton-like catalysts for SMX degradation in hydrogen peroxide (H2O2) media. The findings showed that the nano-SWT prepared by addition of 0.1 g·L−1PVP (nano-SWT-n,n= 0.1) could degrade 92.5% of the SMX within 90 min at indoor temperature, which was due to the nano-SWT providing abundant reaction sites at the solid/solution interfaces. Additionally, SMX could be highly mineralized with 75% TOC removal and H2O2was efficiently utilized during the nano-SWT/H2O2process. In addition, after six cycles of Fenton-like degradation, the nano-SWT remained stable and reusable as a Fenton-like catalyst for SMX degradation. The nano-SWT performed well as a catalyst for SMX degradation. Additionally, this work provides a feasible environmental purification approach for the efficient degradation of SMX through the use of nanoscale schwertmannite as a catalyst in heterogeneous Fenton-like systems.Keywords:Fenton-like;sulfamethoxazole;nanoscale schwertmannite;degradation
研究领域:
环境科学
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化学工程
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材料科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2019
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IF 5.108
Jiajie Xu,Guodong Dai,Biyu Chen,Donglin He,Yue Situ,Hong Huang
An efficient heterogeneous photocatalytic process coupling photocatalysis and Fenton-like process was carried out, where the Fenton-like cycle could be driven by self-produced H 2 O 2 rather than extra H 2 O 2 addition. It was revealed that C 3 N 4 por exhibited good performance at H 2 O 2 production in pure water, which was enhanced up to eight times than bare g-C 3 N 4 . Fenton-like cycle was constructed in Ti 3+ -TiO 2 -C 3 N 4 por as C 3 N 4 por severed as H 2 O 2 donator, while the Ti 3+ -TiO 2 was able to provide photoinduced electrons for the Fenton-like process, resulting in the generation of much more OH radical. In addition, ESR spectra were performed to confirm the promotion of the Fenton-like cycle and much more OH radical was detected in Ti 3+ -TiO 2 -C 3 N 4 por than Ti 3+ -TiO 2 -C 3 N 4 due to the great improvement in H 2 O 2 production of C 3 N 4 por. What’s more, the feasible photocatalytic mechanism of Ti 3+ -TiO 2 -C 3 N 4 por composite was also proposed.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2022
·Vol. 23
·期 20
·12579
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IF 6.208
Xiaoxin Chen,Jiacheng Lin,Yingjie Su,Shanshan Tang
In this study, a magnetic biochar with a unique 3D network structure was synthesized by using a simple and controllable method. In brief, the microbial filamentous fungusTrichoderma reeseiwas used as a template, and Fe3+was added to the culture process, which resulted in uniform recombination through the bio-assembly property of fungal hyphae. Finally, magnetic biochar (BMFH/Fe3O4) was synthesized by controlling different heating conditions in a high temperature process. The adsorption and Fenton-like catalytic performance of BMFH/Fe3O4were investigated by using the synthetic dye malachite green (MG) and the antibiotic tetracycline hydrochloride (TH) as organic pollutant models. The results showed that the adsorption capacity of BMFH/Fe3O4for MG and TH was 158.2 and 171.26 mg/g, respectively, which was higher than that of most biochar adsorbents, and the Fenton-like catalytic degradation effect of organic pollutants was also better than that of most catalysts. This study provides a magnetic biochar with excellent performance, but more importantly, the method used can be effective in further improving the performance of biochar for better control of organic pollutants.Keywords:water;biochar;organic pollutants;adsorption;Fenton-like catalysis
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
SCIENCE OF THE TOTAL ENVIRONMENT
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2016
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IF 3.976
Mei-Qiang Cai,Yi-Zu Zhu,Zong-Su Wei,Jian-Qiang Hu,Sheng-Dong Pan,Rui-Yang Xiao,Chun-Ying Dong,Mi-Cong Jin
Bimetallic oxide CuFeO 2 as a new heterogeneous catalyst has shown much higher catalytic ability for activating peroxide than single-metal oxides. The present work demonstrated a synergistic microwave (MW) enhanced Fenton-like process with CuFeO 2 for rapid decolorization of azo dye Orange G (OG). The MW irradiation dramatically enhanced the OG degradation efficiency, achieving 99.9% decolorization within 15 min at pH 5. The XRD analysis of reused CuFeO 2 , together with metal leaching tests, indicated merits of recycling for CuFeO 2 . The subsequent surface element analysis by XPS for fresh and used CuFeO 2 showed a complex network for reactions between copper-iron redox pairs and surface hydroxyl groups, leading to a synergistic Fenton-like system accelerated by MW irradiation. In the CuFeO 2 initiated Fenton-like reactions, several oxidant species (i.e., OH, O 2 − , electron hole , and Fe IV O) responsible to the OG oxidation were identified by quenching experiments, showing the MW generated high temperature and “hot spots” enhanced the yield of OH by generation of electron-hole pairs. Further, the 26 detected degradation products confirmed the OH dominant oxidation of OG. This study shows that the MW-enhanced Fenton-like reaction using CuFeO 2 has potential applications for rapid decolorization of dye effluent.
研究领域:
环境科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2023
·Vol. 30
·期 32
·79282-79296
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IF 5.8
Zhong Yu,Wan Xiancheng,Lian Xiaoyan,Cheng Wenyu,Ma Xiaoying,Wang Dongtian
Rational treatment of drinking water treatment residues (WTR) has become an environmental and social issue due to the risk of secondary contamination. WTR has been commonly used to prepare adsorbents because of its clay-like pore structure, but then requires further treatment. In this study, a Fenton-like system of H-WTR/HA/H 2 O 2 was constructed to degrade organic pollutants in water. Specifically, WTR was modified by heat treatment to increase its adsorption active site, and to accelerate Fe(III)/Fe(II) cycling on the catalyst surface by the addition of hydroxylamine (HA). Moreover, the effects of pH, HA and H 2 O 2 dosage on the degradation were discussed with methylene blue (MB) as the target pollutant. The mechanism of the action of HA was analyzed and the reactive oxygen species in the reaction system were determined. Combined with the reusability and stability experiments, the removal efficiency of MB remained 65.36% after 5 cycles. Consequently, this study may provide new insights into the resource utilization of WTR. Graphical Abstract
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
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Kaizhou Huang,Jiajie Xu,Wei Qu,Tenghui Jin,Yi Yang,Xiao Liu,Rajasekhar Balasubramanian,J. Paul Chen
A hierarchically structured photocatalyst composite bead (CS-PG 0.5% -Fe) was developed in this study through a synergistic electronic modulation strategy, incorporating porphyrin-tailored polymeric carbon nitride (C 3 N 4 por), Fe(III) coordination, and polyethylenimine(PEI)-alginate cross-linked matrix to overcome challenges in Fenton-like wastewater treatment. The multi-component architecture was constructed via triple cross-linking treatment, with comprehensive mechanistic analysis employing in-situ characterization, reactive species tracking, and theoretical calculations to reveal the photo-driven H 2 O 2 self-supply and activation processes. PEI acted as an electron pump and proton-relay mediator to enhance C 3 N 4 charge separation, while the cross-linked structure enabled spatially the confined H 2 O 2 activation. With 0.5 % PEI crosslinking identified as the optimal condition in the material fabrication, the composite achieved an exceptionally high H 2 O 2 production rate and rapid atrazine degradation ( k = 0.0234 min −1 ), and efficient Fe 2+ /Fe 3+ cycling with 96.05 % stability after four consecutive cycles. This study demonstrates an effective approach to simultaneously regulate charge separation and reaction pathways in photocatalytic-Fenton-like systems, offering a scalable solution for energy-autonomous water purification with reduced chemical inputs and recyclable catalytic components.
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 ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Yubo Wu,Honglin Lin,Xuyun Gao,Zhiyan Liu,Yulun Nie
The Fe 3+ /Fe 2+ cycle has been identified as the rate-limiting step in the Fenton system, and many efforts have been made to promote the Fe 3+ reduction via external electrons provided by various electron donors. However, how to design an efficient electron transport pathway and then inhibit the invalid electron shuttle has been largely underestimated. In this study, two kinds of heterogeneous Fenton catalysts of CuO@Fe 2 O 3 and CuO@C@Fe 2 O 3 were prepared. The key role of carbon in transporting electrons as an electron bridge and its enhancement mechanism in photo-assisted Fenton-like performances were explored in detail. Compared with CuO@Fe 2 O 3 , the removal efficiency of tetracycline (TC) and the corresponding pseudo-first order reaction rate constants over CuO@C@Fe 2 O 3 increased significantly from 88.6 % and 0.1054 min −1 to 99.7 % and 0.2058 min −1 , respectively. Based on a series of probe experiments, visible light irradiation can promote the reduction of Cu 2+ to Cu + , then the carbon in CuO@C@Fe 2 O 3 can effectively transfer electrons from Cu + to Fe 3+ , enhancing the Fe 3+ /Fe 2+ cycle and the following Fenton-like efficiency. Since more ·OH while less ∙O 2 - was produced over CuO@C@Fe 2 O 3 , which further supports the fact that the enhanced Fe 3+ /Fe 2+ cycle was due to the transfer electron from Cu + to Fe 3+ instead of the Haber-Wiss mechanism. Hence, this study provides new insight for effectively improving the transfer efficiency and effective utilization of electrons in Fenton systems.
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 GEOCHEMISTRY
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2021
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IF 3.524
Fuwei Sun,Tianhu Chen,Xuehua Zou,Haibo Liu,Ziyang Chu,Daobing Shu,Hanlin Wang,Fangju Huang,Dong Chen
Siderite is a conventional mineral of sedimentary rock and can activate H 2 O 2 to produce hydroxyl radicals (·OH). Bisphenol A (BPA), 2,4-dichlorophenoxyacetic acid (2,4-D), and sodium sulfadiazine are selected as typical micropollutants to be degraded in a siderite-activated H 2 O 2 system. To determine the influence of solution chemistry on siderite-activated Fenton-like reactions, the amount of ·OH was quantified by using benzoic acid as a probe molecule, and then, kinetic fitting was used to analyze the reaction rate. The results showed that in the range of pH values from 3 to 9, the dissolved Fe 2+ and the lattice Fe(Ⅱ) of siderite activate H 2 O 2 to generate ·OH. An increase in siderite dosage and H 2 O 2 concentration favored the generation of ·OH, but higher siderite dosage and H 2 O 2 concentration suppressed the production rate. The inhibition order of anions on the generation of ·OH was confirmed as follows C l − > N O 3 − > S O 4 2 − . Little difference was observed in the presence of Ca 2+ and Mg 2+ , while the presence of Mn 2+ significantly promoted the production of ·OH. The suppression of humic acid (HA) became more serious as the HA concentration increased. Cycling experiments proved that the system could still produce ·OH in four cycles, although the production rate experienced a slight decrease. The experimental results suggested the role of siderite in the degradation of organic pollution in the process of in-situ soil and groundwater remediation.
研究领域:
环境科学
·
化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Lei Zhao,Dan Yang,Lili Ma,Xueting Feng,Hanming Ding
It is a long-term goal to develop catalysts with high activity and stability in practical applications. Spinel FeCo 2 O 4 has been widely researched in heterogeneous catalysis due to its characteristics of stable structure and environmental friendliness. In this work, the composites of graphitic carbon nitride ( g -C 3 N 4 ) and spinel iron cobaltate (FeCo 2 O 4 ) have been fabricated and used to degrade rhodamine B (RhB) by combining the photocatalytic and Fenton-like reactions. The composite with 3% FeCo 2 O 4 (3%FeCo 2 O 4 /CN) showed the best degradation efficiency, with which about 98% RhB was degraded in 45 min. The catalytic activity of 3%FeCo 2 O 4 /CN was larger than that of FeCo 2 O 4 , g -C 3 N 4 , and their mechanical mixture. The synergetic interaction between photocatalytic and Fenton-like reactions and the effective separation of the photogenerated charges are responsible for the enhanced catalytic activity. The quenching and EPR experiments exhibit that SO 4 − , O 2 − , h + , and ΟΗ, especially SO 4 − , are involved in the removal of RhB. The cycle experiments confirm that the used catalyst can restore its catalytic activity after calcination at 400 °C. The work suggests that the composites show a good ability to degrade organic pollutants in wastewater.
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
Journal of the Taiwan Institute of Chemical Engineers
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2021
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IF 5.876
Wenbo Liu,Jiabin Zhou,Dan Liu,Su Liu,Xianjie Liu,Shuang Xiao,Choujing Feng,Changhong Leng
Background The combination of Fenton catalyst and photocatalyst will lead to the decrease in light absorption on the photocatalyst, and it is difficult for Fe 3+ to be converted into Fe 2+ on the Fenton catalyst, resulting in poor Fenton-like process and photocatalysis effect. Preparing catalysts containing oxygen vacancies (OVs) can simultaneously increase the light absorption and the cycle of Fe(Ⅲ) to Fe(Ⅱ) to improve the catalytic efficiency of Fenton-like process and photocatalysis. Methods A mesoporous H-MIL53 with OV was constructed by ligand selective pyrolysis. The formation mechanism of H-MIL-53 vacancy was analyzed by XPS, EPR, FTIR and TG. Significant findings XPS, EPR, FTIR and TG showed that calcination caused the fracture of Fe-O bond resulted in OV and coordinative unsaturated Fe site. H-MIL-53 showed higher degradation efficiency of tetracycline hydrochloride (93%) and high recycling performance. The electron-rich OV could activate the dissolved oxygen to produce •O 2 − through phot-introduced electrons, while the electron-poor iron site can activate H 2 O 2 to produce •OH. These results provide a new direction for the construction of metal-organic framework (MOF) containing OV for application in Fenton-like process and photocatalysis.
研究领域:
材料科学
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环境科学
✓ 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）