CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Bingyu Wang,Qiaoqiao Li,Ying Lv,Haibin Fu,Dingyi Liu,Yanfang Feng,Huifang Xie,Hongxia Qu
The CuFe 2 O 4 catalyst in advanced oxidation processes had received much attention, while the leaching metal ions and its agglomeration limited its application prospect. The conversion of waste activated sludge (WAS) into sludge-derived biochar (SBC) through pyrolysis could not only be the option of reducing the environmental burden but also converted to be the value-added environmental remediation materials. Hence, the present study prepared as a CuFe 2 O 4 /SBC heterogeneous catalyst to degrade new environmental pollutants (bisphenol S, BPS). To our best knowledge, CuFe 2 O 4 /SBC as a heterogeneous catalyst activating peroxydisulfate to degrade BPS in solution is rarely reported, and the catalytic performances and degradation mechanism of CuFe 2 O 4 /SBC need to be comprehensively investigated. The synergistic effect between CuFe 2 O 4 and SBC enhanced catalytic performances and alleviated agglomeration. The CuFe 2 O 4 /SBC was greatly ameliorated metal ions leaching, but the synthetic strategy could better optimize to further reducing Cu ion leaching. The dominant role of heterogeneous catalysis by CuFe 2 O 4 /SBC also have been elucidated. It was proposed that radical ( OH and SO 4 − ) and non-radical ( 1 O 2 ) oxidation processes worked together for BPS degradation, but surface-bound radical pathways played more crucial roles. Some intermediate products with higher toxicity may be produced due to the non-completely mineralized, thus future attention should be paid to their environmental risks. Hence, the detoxification efficiency of CuFe 2 O 4 /SBC needs to be further strengthened via improving the reaction conditions. Overall, this study provided a new strategy to simultaneously solve the problems of WAS disposal and leaching metal ions of CuFe 2 O 4 .
研究领域:
环境科学
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催化化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Zhaoyang Li,Yongjie Zhao,Qing Guan,Qian Liu,Sara Khan,Leilei Zhang,Xianze Wang,Lei Chen,Xia Yang,Mingxin Huo
Photocatalytic reduction of nitrate has attracted much attention recently, however, low efficiency and difficult separation have limited its application in practice. In this study, the novel direct dual Z-scheme AgBr(Ag)/MIL-101(Cr)/CuFe 2 O 4 (AB/M/CFO) was fabricated by the hydrothermal technology combined with the photodeposition method for the first time. The AB/M/CFO exhibited the highest nitrate conversion and nitrogen selectivity (79.9% and 94.5%, respectively) compared to AgBr(Ag)/MIL-101(Cr), MIL-101(Cr) and CuFe 2 O 4 for 30 min UV-light irradiation. The dual Z-scheme of AB/M/CFO enhanced electron transfer and charge separation, which was proved by transient photocurrent responses, leading to a significant improvement in photocatalytic efficiency. Meanwhile, after four cycles, the AB/M/CFO photocatalyst also displayed a strong magnetic separation ability and excellent recycling stability. Furthermore, the excitation and electron transfer process over dual Z-scheme AB/M/CFO photocatalytic material were proposed, based on the radical trapping experiments. Our work provides a new strategy to construct dual Z-scheme MOFs-based materials that have promising applications in photocatalytic reduction of pollutants.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Weizhong Tan,Lujing Zhao,Fei fei Li,Guangliang Cui,Pinhua Zhang,Changmin Shi
In this study, employing a 2D electrodeposition in situ assembly method, a high-performance H2S sensor based on a p-n type Cu2O-CuFe2O4 heterostructure ordered nanowire arrays was successfully fabricated on silicon substrates. Compared to Cu2O, Cu2O-CuFe2O4 nanowire arrays exhibits an ideal interfacial barrier structure and higher initial resistance, with a response to 10 ppm of H2S at room temperature (20 ± 3 °C) increased by 225 times and a response time reduced by over 2400 s. The sensor demonstrates exceptional sensitivity (LOD = 10 ppb; response = 234.5), selectivity, and humidity resistance (stable response ∼6000 to 10 ppm of H2S at 60–90% RH). Notably, it shows unique low-temperature-enhanced sensing, with a response of 8.365 × 104 to 10 ppm of H2S at −10 °C (vs 1.144 × 104 at 20 °C). The sensor was successfully applied to detect H2S in human oral exhaled breath, demonstrating its potential for noninvasive disease diagnosis and offering a promising approach for developing room-temperature breath analysis sensors.
研究领域:
生物医学传感器
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呼吸诊断学
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分子诊断
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纳米医学
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转化医学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2018
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IF 6.735
Jun Li,Jianfei Yan,Gang Yao,Yunhong Zhang,Xiang Li,Bo Lai
In this study, CuFe 2 O 4 (CFO) magnetic nanoparticles are used as both particle electrode and catalyst for persulfate (PS), applying in the three-dimensional (3D) electrochemical process for atrazine (ATZ) degradation. We studied the effects of operating parameters (i.e., CFO dosage, PS concentration, initial pH, and current density) on ATZ degradation. The optimum ATZ degradation efficiency (>99%) and TOC removal (22.1%) were achieved after 35 min treatment with CFO dosage of 3.0 g/L, PS concentration of 4.0 mM, current density of 4 mA/cm 2 , and initial pH of 6.3. Several comparative studies of control experiments were carried out, confirming the superior performance of EC/CFO/PS system for ATZ degradation. CFO magnetic nanoparticle electrodes (MNPEs) exhibited a favorable stability during the five runs under optimal conditions. Quenching experiments and electron paramagnetic resonance (EPR) study proved that ATZ was destroyed by free radicals. Meanwhile, the monitored sulfate radical and hydroxyl radical concentration in EC/CFO/PS system revealed that sulfate radical was the dominant reactive radical in ATZ degradation process. Based on the detected intermediates by LC-MS, the pathways of ATZ degradation in the EC/CFO/PS system were proposed. Finally, the study proposed the reaction mechanism of EC/CFO/PS three-dimensional electrochemical process. In brief, EC/CFO/PS 3D electrochemical process was found to be a reliable technology for the remediation of surface water and groundwater contaminated by atrazine.
研究领域:
环境科学
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电化学工程
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污染控制技术
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DOI
高影响因子
MOLECULES
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2019
·Vol. 25
·期 1
·124
·
IF 3.06
Sufeng Zhang,Yongshe Xu,Dongyan Zhao,Wenqiang Chen,Hao Li,Chen Hou
A facile approach was successfully developed for synthesis of cellulose nanocrystals (CNC)-supported magnetic CuFe2O4@Ag@ZIF-8 nanospheres which consist of a paramagnetic CuFe2O4@Ag core and porous ZIF-8 shell. The CuFe2O4nanoparticles (NPs) were first prepared in the presence of CNC and dispersant. Ag NPs were then deposited on the CuFe2O4/CNC composites via an in situ reduction directed by dopamine polymerization (PDA). The CuFe2O4/CNC@Ag@ZIF-8 nanocomposite was characterized by TEM, FTIR, XRD, N2adsorption-desorption isotherms, VSM, and XPS. Catalytic studies showed that the CuFe2O4/CNC@Ag@ZIF-8 catalyst had much higher catalytic activity than CuFe2O4@Ag catalyst with the rate constant of 0.64 min−1. Because of the integration of ZIF-8 with CuFe2O4/CNC@Ag that combines the advantaged of each component, the nanocomposites were demonstrated to have an enhanced catalytic activity in heterogeneous catalysis. Therefore, these results demonstrate a new method for the fabrication of CNC-supported magnetic core-shell catalysts, which display great potential for application in biocatalysis and environmental chemistry.Keywords:CuFe2O4nanoparticles;cellulose nanocrystals;Ag nanoparticles;ZIF-8 catalysis;4-nitrophenol reduction
研究领域:
材料科学
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环境化学
·
催化化学
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产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Chao Lei,Mingli Ye,Jun Tang,Cun Yu,Sha Yu
In this study, the performance of an efficient magnetic core-shell heterostructure, CuFe 2 O 4 /CuS (referred to as CFOCS), was assessed for the disintegration of amoxicillin (AMOX) under simulated sunlight irradiation in the presence of peroxymonosulfate (PMS). The Characterization analyses demonstrated the successful construction of the CFOCS magnetic core-shell. Comparative studies demonstrated the superior performance of the CFOCS/PMS/xenon ternary system compared to binary and individual processes, with a synergy index (SI) of 1.21. The purification experiments illustrated that complete removal of the AMOX antibiotic was achieved under optimized conditions, including a pH of 7.0, PMS dosage of 2 mM, CFOCS quantity of 0.5 g L −1 , and AMOX concentrations of 10 and 20 mg L −1 . To elucidate the charge carrier migration pathway, a type II heterojunction model was proposed, supported by radical scavenging experiments, UV–Vis DRS, electrochemical impedance spectroscopy (EIS), and Mott-Schottky (M-S) analyses. The mechanistic investigation revealed the dual activity of PMS, which can be activated both in the aqueous solution under xenon light and on the catalyst surface through Cu (I) and Cu (II) centers. A key aspect of this study was a comprehensive aquatic hazard assessment of amoxicillin (AMX) in both treated and untreated aqueous solutions, utilizing the hazard quotient (HQ) method. Eventually, the investigated ternary system demonstrated remarkable efficiency in AMX degradation across various water systems, including lake water, tap water, and deionized water (DIW). Notably, the system maintained exceptional stability in all tested water bodies, underscoring the practical applicability of CFOCS catalyst in real-world scenarios.
研究领域:
环境科学
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化学工程
·
药学
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产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Chenyue Zhang,Zheng Wang,Fulin Li,Jiahao Wang,Nannan Xu,Yannan Jia,Shiwei Gao,Tian Tian,Wei Shen
CuFe 2 O 4 is often loaded onto biochar (BC) to prepare activated peroxodisulfate (PDS) catalysts for the removal of persistent organic pollutants from water. However, the activation mechanism remains unclear. Therefore, in this study, a BC-loaded CuFe 2 O 4 (CuFe 2 O 4 @BC) system that activates PDS was constructed and used to degrade the antibiotic tetracycline (TC). The synthesized materials were fully characterized, and the optimal reaction conditions of the system were determined to be a CuFe 2 O 4 @BC dosage and PDS concentration of 0.1 mg/L and 10 mM, respectively, under acidic conditions, achieving a TC removal of 30 mg/L. Under these conditions, the removal efficiency reaches 96.0 %. The synergistic effect of CuFe 2 O 4 and BC greatly improves catalytic performance and avoids the agglomeration of the metallic nanoparticles. The PDS-activation mechanism was studied through electron paramagnetic resonance and quenching experiments, revealing that TC is degraded under the combined effects of sulfate radicals (SO 4 •− ), hydroxyl radicals (•OH), and singlet oxygen ( 1 O 2 ). Two plausible degradation pathways of TC are proposed. Overall, this study provides a deeper understanding of metal-modified biochar activated PDS and provides a new strategy for the degradation of TC in this catalytic system.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
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IF 4.65
Pulin Hao,Mingzhu Hu,Rong Xing,Wenjun Zhou
Methylparaben (MeP), as emerging contaminants widely used in pharmaceuticals and personal care products , have potential endocrine disrupting effect. In this study, the copper ferrite (CuFe 2 O 4 ) nanoparticles were uniformly distributed on graphene oxide (GO), and the performance and mechanism of CuFe 2 O 4 -rGO composites in activating persulfate (PS) for MeP degradation were comprehensively investigated. Results showed that the CuFe 2 O 4 -rGO composites exhibited much better efficiency for MeP degradation than CuFe 2 O 4 , and the synergistic effect between CuFe 2 O 4 and GO in CuFe 2 O 4 -rGO composite was also observed. The best catalytic performance of CuFe 2 O 4 -rGO composites was obtained at the mass ratio of 4:1 for CuFe 2 O 4 to GO and at neutral pH. X-ray photoelectron spectroscopy (XPS) results suggested that graphene in the composites mainly served as an electron shuttle to mediate electron transfer reactions. Electron paramagnetic resonance (EPR) and the quenching experiments further revealed that both hydroxyl and sulfate radicals were the major reactive species, and non-radical process also occurred during the reaction. Meanwhile, the degradation pathways of MeP involving hydroxylation, decarbonylation and ring opening were rationally proposed based on computational method and intermediates identification. All these results could provide insight into persulfate activation by CuFe 2 O 4 -rGO nanocomposites in environmental control applications.
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 95
·期 1
·196-204
·
IF 2.659
Dongmei Jia,Min Liu,Jiangbao Xia,Changhai Li
BACKGROUND The excess use of glyphosate in both agricultural and nonagricultural areas has led to tremendous health (e.g. cardiac and respiratory impacts) and environmental concerns worldwide. There is an urgent need to find efficient ways to remove glyphosate residue from the aqueous environment. RESULTS Herein, an effective method for the removal of aqueous glyphosate is developed by employing nano-CuFe 2 O 4 modified biochar (BC) as an adsorbent. The CuFe 2 O 4 @BC adsorbents were prepared through hydrolyzing phragmite powders at 500 °C, followed by a simple coprecipitation method. The influence of initial glyphosate concentration, temperature, pH, time and coexisting species on the adsorption behavior of CuFe 2 O 4 @BC to glyphosate were fully examined. CONCLUSION It was found that the adsorption of glyphosate onto CuFe 2 O 4 @BC is highly dependent on the initial glyphosate concentration, pH and temperature, as well as coexisting species. The Freundlich and Langmuir models fitted the equilibrium isotherm data well, indicating the presence of both physisorption and chemisorption. In addition, the adsorption kinetic is well described by the pseudo-second-order kinetic model, which indicated that chemical adsorption may dominate the adsorption process. The CuFe 2 O 4 @BC adsorption of glyphosate presented a maximum adsorption capacity of 269.4 mg g −1 within 240 min, under 600 mg L −1 of glyphosate solution at 298 K and pH 4; this performance exceeds all other biochar-derived adsorbents for the removal of aqueous glyphosate encountered in the open literature. Such a cost-effective, high-performance adsorbent shows a great potential for the removal of aqueous glyphosate in industry. © 2019 Society of Chemical Industry
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Kui Tang,Xiaoyuan Chen,Zhenhua Tang,Zhao Qin,Kangzhen Xu,Ruiqi Shen,Tuan Zhao,Suhang Chen
The microwave ignition holds potential in the ignition of weapons due to its simple structure, non-contact property, and simultaneous ignitions of large area. However, the long ignition delay time of the current ignition agents cannot meet the microwave weaponry advancements. To address the issues, a microwave sensitive oxide-CuFe 2 O 4 (CUFO) which was firstly discovered to be easily ignited by microwaves compared many ferrites, was coupled with Ti nanoparticles (n-Ti) to form Ti/CUFO microwave ignition agents by electrostatic spray granulation. The characterization of microwave ignition, volumetric combustion, burning rate and DSC were used to determine its ignition delay time and the energy release properties. It indicates that the microwave sensitivity, maximum peak pressure and pressure pressurization rate of Ti/CUFO first increases and then decreases with the promoting content of n-Ti. The Ti/CUFO at Φ = 3.5 exhibits the lowest ignition delay time by 79.24 ms compared to the 98.7 ms of n-Ti, meanwhile, its maximum peak pressure and pressurization rate reach the highest by 338.54 kPa and 8.57 kPa/ms, respectively. The DSC results indicate that Ti/CUFO exhibits much lower reaction peak temperature by 320–335 °C compared to 488 °C of n-Ti, which suggests Ti-CUFO reaction maybe much easier be activated. The dielectric loss of n-Ti and CUFO under strong electric field transfer the energy of microwaves to heat, reaching to its reaction temperature. The XPS and XRD results of CUFO after microwave radiation disclosing the crystal transition, formation of divalent iron and oxygen vacancies , as well as the released bright light under microwave radiation , suggest the thermal breakdown mechanism of CUFO. When Ti/CUFO exposes into microwaves, CUFO generates oxygen vacancies due to heat loss and n-Ti is dielectric heated, followed by the generated oxygen reacting with n-Ti, improving the combustion performance of n-Ti. This result provides new insight for the designing of microwave ignition.
研究领域:
材料科学
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能源与动力工程
·
化学工程
✓ 已验证
DOI
高影响因子
FERROELECTRICS
·
2023
·
IF 0.8
Yingying Chen,Peisong Tang,Xiaoqian Lu,Jia Ma,Huanhuan Li,Haifeng Chen
Using iron nitrate and copper nitrate as raw materials, mesoporous material SBA-15 as template agent and n-hexane as solvent, CuFe2O4 samples of mesoporous loaded composite metal oxide catalysts were successfully prepared by calcination at 600 °C. The samples were characterized by X-ray diffraction (XRD), thermogravimetric-differential scanning analysis (TG-DSC), and scanning electron microscopy (SEM). The selective oxidation of benzyl alcohol by CuFe2O4 under different catalytic conditions was investigated using benzyl alcohol as a model compound, and the oxidation products were analyzed by high performance liquid chromatography (HPLC). The results showed that the CuFe2O4 catalyst prepared by calcination at 600°Cwas the best. The best selective oxidation conditions were achieved at a reaction system temperature of 90 °C, a catalyst dosage of 4 g/L, a molar ratio 1:1 of H2O2 dosage to benzyl alcohol, and a reaction time of 4 h. The conversion of benzyl alcohol under this condition was 66.95%, and the selective conversion of benzaldehyde was 96.07%. This indicates that CuFe2O4 is a composite metal oxide with high selective oxidation of benzyl alcohol and has wide application prospects.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Guowen Qian,Lemin Zhang,Yang Shuai,Xiongting Wu,Zhikui Zeng,Shuping Peng,Cijun Shuai
There is an increasingly growing demand for rapid and safe sterilization strategies to overcome implantation-associated infection. Herein, a NIR light-triggered antimicrobial heterojunction of CuFe 2 O 4 -MXene was constructed by in-situ growing CuFe 2 O 4 on Ti 3 C 2 MXene , then was homogeneously incorporated into poly (L-lactic acid) and fabricated into tracheal scaffold by selective laser technology. The tracheal scaffolds with the heterojunction not only generated hyperthermia and exogenous reactive oxygen species (ROS) under NIR light irradiation , but also depleted glutathione (GSH) in bacteria and produce endogenous ROS via Fenton(−like) reaction, thus achieving strong and persistent antibacterial cascade effect. They killed 96.49% of S. aureus and 95.33% of P. aeruginosa after NIR light irradiating for 15 min. Moreover, the tracheal scaffold with the heterojunction had excellent cytocompatibility and chondrogenic-promoting ability. This work designed the tracheal scaffold with effective antibacterial ability and cartilage regeneration function, which will bring a new dawn for the patients with tracheal injury.
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产品关联
DOI
高影响因子
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