APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Can Zhu,Yuehui Luo,Wanyun Tang,Nan Huang,Shiju Tao,Huan Yang,Hao Feng,Quanxin Li
The high value transformation of renewable lignocellulose is crucial for reducing carbon emissions and promoting sustainable development. This effort aims to demonstrate that bio-based cresol (an important high-value chemical) can be yielded from lignocellulosic biomass. This novel directed conversion was effectuated by coupling catalytic pyrolysis of lignocellulose into aromatic intermediates and catalytic hydroxylation of aromatic intermediates into bio-based cresol. We also developed a highly active and recyclable magnetic catalyst (Cu 0 -CuFe 2 O 4 @Biochar(HTR)), confirming that introducing Cu 0 into the copper-iron composite metal oxide catalyst promotes hydroxyl radicals formation and the synthesis of bio-based cresol. The Cu 0 -CuFe 2 O 4 @Biochar(HTR) catalyst exhibited high cresol selectivity (81.1 %) and high cresol yield (54.3 %) in catalytic hydroxylation of aromatic intermediates into bio-based cresol. Based on catalyst characterizations and hydroxyl radicals analysis, the presumable reaction mechanism related to the bio-based cresol synthesis was proposed. Potentially, this strategy may provide a beneficial pathway for developing high-value bio-based chemical (cresol) using renewable lignocellulosic biomass.
研究领域:
催化化学
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可再生能源
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绿色化学
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生物质转化
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材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Peng Ye,Deming Wu,Manye Wang,Yi Wei,Aihua Xu,Xiaoxia Li
A heterogeneous magnetic CuFe 2 O 4 @OMS-2 catalyst was fabricated through a facile solvent-free process using Mn(CH 3 COO) 2 and KMnO 4 in the presence of CuFe 2 O 4 . It was found that the BET surface area of OMS-2 as well as the ratio of low-valent manganese species significantly increased in the hybrid catalyst, due to interactions between CuFe 2 O 4 and the precursor of amorphous manganese oxide . Acid Orange 7 (AO7) and other organic pollutants could be completely degraded by the CuFe 2 O 4 @OMS-2 catalyst within 30 min in the presence of peroxymonosulfate (PMS), while CuFe 2 O 4 and OMS-2 showed no significant activity for the reaction. The hybrid catalyst also exhibited excellent long-term stability and could be easily recovered with the assistance of an external magnetic field. A possible degradation mechanism for the synergistic effects of different valent metal species and reactive radicals was proposed, which involved the electron transfer from Mn(III) or Mn(II) species to PMS with the generation of sulfate and hydroxyl radicals, and from AO7 and Cu(I) in CuFe 2 O 4 to Mn(IV) and Mn(III) to reduce these Mn species.
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DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 6
·5702
·
IF 5.6
Youmei Zeng,Guangming Zhou,Dandan He,Guilong Peng
A magnetic copper ferrite and biochar composite (CuFe2O4@BC) catalyst was prepared by an improved sol-gel calcination method and initially used for the removal of antibiotics ciprofloxacin (CIP) by activated peroxymonosulfate (PMS). Using CuFe2O4@BC as the activator, 97.8% CIP removal efficiency could be achieved in 30 min. After a continuous degradation cycle, CuFe2O4@BC catalyst still exhibited great stability and repeatability and could also be quickly recovered by an external magnetic field. Meanwhile, the CuFe2O4@BC/PMS system presented good stability for metal ion leaching, which was far less than the leaching of metal ions in the CuFe2O4/PMS system. Moreover, the effects of various influencing factors, such as initial solution pH, activator loading, PMS dosage, reaction temperature, humic acid (HA), and the inorganic anions were explored. The quenching experiments and the electron paramagnetic resonance (EPR) analysis manifested that hydroxyl radical (•OH), sulfate radical (SO4•−), superoxide radical (O2•−), and singlet oxygen (1O2) were generated in the CuFe2O4@BC/PMS system, while1O2and O2•−are mainly involved in the degradation process. The synergistic effect between CuFe2O4and BC enhanced the structural stability and electrical conductivity of the material, which promoted the bonding between the catalyst and PMS, resulting in the enhanced catalytic activity of CuFe2O4@BC. This indicates that CuFe2O4@BC activating PMS is a promising remediation technique for CIP-contaminated water.Keywords:magnetic copper ferrite;biochar;catalytic performance;ciprofloxacin;peroxymonosulfate
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
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Shikai Xue,Dongying Zhu,Tongxin Wu,Ninghang Zhou,Jiaying Luo,Linqi Liu,Haiyan Wang,Qiujun Lu,Guoxing Yin,Fuyou Du
Photocatalytic technology has garnered significant attention due to its environmentally friendly nature and effective degradation capabilities. However, the absence of photocatalytic materials that possessed high removal efficiency, facile separation from aqueous phases, and good recyclability has constrained the advancement of photocatalytic treatment technologies. To address these challenges, a novel magnetic flower-like Bi 5 O 7 I-modified CuFe 2 O 4 (BOI/CFO) photocatalyst was successfully fabricated via solvothermal method and subsequent calcination. The prepared BOI/CFO composites exhibited excellent antimicrobial properties and highly efficient photocatalytic degradation performance. Under the optimal conditions, the photodegradation efficiency of BOI/CFO composite (10 mg) for doxycycline (20 mg/L) was 99.48 % within 30 min under visible light irradiation, and retain above 88 % even after 5 consecutive uses. Further characterization and bacterial experiments confirmed the presence of a photogenerated electron transfer mechanism in the BOI/CFO composite and its strong antimicrobial capability. Finally, the possible doxycycline degradation pathways were speculated by analyzing the corresponding degradation intermediates with LC-MS method, and the toxicity evolution of the doxycycline degradation products was valuated by using density functional theoretical method. This research is anticipated to furnish valuable insights into the designing of photocatalysts characterized by superior recyclability S-Scheme Heterojunction Photocatalyst.
研究领域:
环境科学
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材料化学
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光催化化学
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环境功能材料
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分子生物学
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药物降解
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计算化学
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微生物学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Dongli Shang,Yongtao Zhao,Youqi Jiang,Zhiyu Cheng,Zhengjie Dai,Xinting Sun,Bingbing Qiu,Zohaib Ur Rehman,Changrong Xia,Yunan Jiang,Xuexin Jiang,Kaibin Tang
The standard solid oxide fuel cells (SOFCs) interconnects are ferritic stainless steels such as SUS430. However, these steels present serious issues such as chromium poisoning and oxidation of ferritic stainless steel interconnects. Here, we report a CuFe 2 O 4 /CuO bilayer protective coating deposited on SUS430 interconnects via ultrasonic spray deposition, a scalable and conformal surface engineering technique. The bilayer architecture combines a conductive CuFe 2 O 4 spinel inner layer and a CuO outer diffusion barrier to synergistically suppress chromium migration and oxidation reaction while maintaining low electrical resistance. The coating exhibits uniform coverage, strong adhesion, and excellent structural stability after extended exposure at 800 °C. Compared to bare and single-layer CuFe 2 O 4 -coated steels, the bilayer coating significantly inhibits Cr 2 O 3 scale formation, limiting its thickness to ∼3 μm after 1000 h. Long-term oxidation tests over 1000 h show a marked reduction in the parabolic oxidation rate constant, corresponding to a protection factor of 86.6%. Notably, the bilayer coating achieves low area-specific resistance, with values of 2.4 mΩ cm 2 after 100 h and below 7.6 mΩ cm 2 after 1000 h at 800 °C. Electrochemical impedance spectroscopy on symmetrical cells confirms that the bilayer coated interconnect effectively mitigates chromium-induced degradation of the oxygen reduction reaction, preserving cathode activity and interfacial stability. This work establishes the CuFe 2 O 4 /CuO bilayer, as a robust and scalable engineered solution for durable, high-performance SOFC interconnects.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Lele Cui,Zhiwen Li,Qingqing Li,Meifei Chen,Wenheng Jing,Xuehong Gu
The development of transition metal oxide-based integrated carbonaceous materials for use as bifunctional electrodes of high stability and activity in the heterogeneous electro-Fenton (EF) process is supposed to have great potential in environmental governance. Herein, Cu/CuFe 2 O 4 (CCFO) with different Cu 0 ratios were synthesized by a facile one-step solvothermal approach. These materials were subsequently used to fabricate modified graphite felt through the polytetrafluoroethylene (PTFE)-bonding technique. Importantly, with its hydrophobicity PTFE effectively inhibited metal leaching from the thus obtained cathodes and improved the oxygen utilization rate. Cathode performance in EF-based tetracycline (TC) degradation was found to increase with Cu 0 ratio. The observed increase in activity was attributed to Cu 0 enhancing the 2-electron oxygen reduction reaction selectivity (i.e., H 2 O 2 production) and endowing the cathode with abundant electron-rich centers that accelerated active Fe(II) regeneration, causing rapid conversion of H 2 O 2 to hydroxyl radical ( OH). The possible TC mineralization pathway was inferred by liquid chromatography–mass spectrometry (LC–MS) analysis, and a catalytic mechanism of the heterogeneous EF process was proposed. The most effective cathode fabricated displayed high stability even at pH 3 (0.84 ± 0.11 mg/L Fe and 1.35 ± 0.17 mg/L Cu leaching) and exhibited nearly 80% TC removal efficiency after five oxidation cycles, demonstrating its potential use in heterogeneous EF technology for efficient and durable wastewater treatment.
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
CHEMICAL ENGINEERING JOURNAL
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2016
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IF 5.31
Xiaoling Zhang,Mingbao Feng,Ruijuan Qu,Hui Liu,Liansheng Wang,Zunyao Wang
Diethyl phthalate (DEP), a plasticizer widely used in chemical industry, has been classified as an endocrine disruptor. Therefore, it is urgent to develop methods for degradation of DEP to minimize its ecological risk. In this study, copper ferrite decorated multi-walled carbon nanotubes magnetic nanoparticles (CuFe 2 O 4 /MWCNTs MNPs) were prepared by sol–gel combustion method as catalysts for the degradation of DEP. The catalysts were characterized by scanning electron microscope, transmission electron microscope, Fourier transform infrared spectroscopy, nitrogen gas uptake, X-ray diffraction, and X-ray photoelectron spectroscopy. Catalytic degradation of DEP by persulfate (PS) was investigated with various influencing factors including catalyst loading, PS concentrations, temperature and pH. Furthermore, the CuFe 2 O 4 /MWCNTs MNPs showed high catalytic activity, stability and recyclability in DEP removal. Especially, leaching of metal ions from reused CuFe 2 O 4 /MWCNTs was negligible (concentration < 0.4%), indicating the resistance to oxidation. The electron paramagnetic resonance analysis confirmed that the addition of CuFe 2 O 4 /MWCNTs into PS system can accelerate the generation of OH and SO 4 − , and the quenching experiments further certified the catalytic reaction was predominated by SO 4 − . The degradation intermediates were identified and the pathways were proposed. Overall, this study provides practical knowledge for DEP removal by CuFe 2 O 4 /MWCNTs activated PS at ambient temperature.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhen Yu,Yan Zhang,Dongquan Leng,Tingting Wu,Si-Jia Ge,Dawei Fan,Hongmin Ma,Yu Du,Qin Wei
Human papillomavirus (HPV) infection represents a major global health concern due to its strong association with cervical cancer and other malignancies, underscoring the critical need for highly sensitive detection methods. In this study, an advanced photoelectrochemical biosensing platform was developed for ultrasensitive HPV detection. An In 2 S 3 -sensitized SnO 2 heterostructure substrate that dramatically enhances photogenerated charge separation efficiency, generating extremely significant photocurrent enhancement. Furthermore, a CuFe 2 O 4 @T-COF nanosphere serving as a multifunctional signal quencher through synergistic steric hindrance, competitive oxygen consumption and light absorption effects. Notably, an exonuclease III-powered DNA walker system enabling cyclic signal amplification through programmable target recycling. The biosensor demonstrates exceptional analytical performance, achieving a broad dynamic range of 10 −6 to 10 μmol/L with an ultralow detection limit of 1.37 × 10 −7 μmol/L. This breakthrough sensing platform not only provides a powerful tool for early HPV diagnosis but also opens new possibilities for developing next-generation biosensors with clinical-level sensitivity and specificity.
研究领域:
生物传感器
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纳米技术
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分子诊断
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病毒学
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癌症研究
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分析化学
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产品关联
DOI
高影响因子
ENERGY
·
2023
·
IF 9
Li Yang,Caifu Li,Chen Song,Dan Zhu,Jiangyuan Zhao,Fang Liu,Xiaorui Liu
Oxygen carrier (OC) is of great importance in chemical looping combustion (CLC) technology. The migration rate of bulk lattice oxygen during reduction process is detrimental in reaction rate. However, the migration path of lattice oxygen is still not clear. In this study, a thermogravimetric analyzer (TGA) was used to investigate the reaction characteristics and kinetic parameters of the OC. The oxygen migration paths of CuO and CuFe 2 O 4 bulk lattices were studied by density functional theory (DFT) in a five-layer (2 × 1) CuO (1 1 1) and nine-layer (1 × 1) CuFe 2 O 4 (1 0 0) plane model. The kinetic parameters, activation energy changes and relative kinetic model of the OC reduction were explored. According to the DFT results, the deeper bulk phase oxygen requires greater more energy toovercome energy barrier for migration. CuO has a lower oxygen release capacity than CuFe 2 O 4 in the early stages, but higher in the later stage. The reaction kinetics study revealed that the reaction mechanism of the reduction of the copper-iron composite OC is a tertiary chemical reaction control mechanism. During the reaction, the activation energy of the OC changes continuously. The macroscopic reaction kinetics agree with the microscopic simulation, proving the simulation model's validity.
研究领域:
化学工程
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材料科学
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热力学
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计算化学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
·
IF 11.698
Ruobai Li,Meixuan Cai,Zhijie Xie,Qianxin Zhang,Yongqin Zeng,Haijin Liu,Guoguang Liu,Wenying Lv
A copper ferrite modified graphitic carbon nitride (CuFe 2 O 4 /g-C 3 N 4 ) nanocomposite was successfully synthesized for the utilization as a visible-light responsive photocatalyst. The as-synthesized catalysts were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectra (UV–vis/DRS), photoluminescence (PL) analysis, and an electrochemical workstation. Compared to g-C 3 N 4 and CuFe 2 O 4 , the CuFe 2 O 4 /g-C 3 N 4 composites possessed excellent photocatalytic performance for the destruction of propranolol (PRO). A removal efficiency of 82.2% was achieved with 1 g/L catalyst and 1 mM peroxydisulfate (PDS) under visible light irradiation (λ < 420 nm) within 120 min. The g-C 3 N 4 coupled with CuFe 2 O 4 improved the capacity for visible light capture, whereas the presence of PDS enhanced the transfer of photogenerated electron. Quenching experiments and electron spin resonance (ESR) suggested that the reactive oxygen species (ROS) were superoxide radicals (O 2 − ), h + , hydroxyl radicals ( OH), and sulfate radicals (SO 4 − ). Moreover, the byproducts of PRO were investigated by HPLC-MS/MS, and the transformation pathways under the Vis/g-C 3 N 4 /CuFe 2 O 4 /PDS process were tentatively proposed based on the intermediates. The research provided a potential approach of CuFe 2 O 4 modified g-C 3 N 4 as a photocatalyst combined with PDS for the treatment of contaminated water.
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
MOLECULES
·
2022
·Vol. 27
·期 19
·6385
·
IF 4.927
Chengzhi Yu,Libin Zheng,Yongyuan Hong,Jiabin Chen,Feng Gao,Yalei Zhang,Xuefei Zhou,Libin Yang
Advanced oxidation processes (AOPs) demonstrate great micropollutant degradation efficiency. In this study, CuFe2O4was successfully used to activate peracetic acid (PAA) to remove Rhodamine B. Acetyl(per)oxyl radicals were the dominant species in this novel system. The addition of 2,4-hexadiene (2,4-HD) and Methanol (MeOH) significantly inhibited the degradation efficiency of Rhodamine B. The ≡Cu2+/≡Cu+redox cycle dominated PAA activation, thereby producing organic radicals (R-O˙) including CH3C(O)O˙ and CH3C(O)OO˙, which accounted for the degradation of Rhodamine B. Increasing either the concentration of CuFe2O4(0–100 mg/L) or PAA (10–100 mg/L) promoted the removal efficiency of this potent system. In addition, weakly acid to weakly alkali pH conditions (6–8) were suitable for pollutant removal. The addition of Humid acid (HA), HCO3−, and a small amount of Cl−(10–100 mmol·L−1) slightly inhibited the degradation of Rhodamine B. However, degradation was accelerated by the inclusion of high concentrations (200 mmol·L−1) of Cl−. After four iterations of catalyst recycling, the degradation efficiency remained stable and no additional functional group characteristic peaks were observed. Taking into consideration the reaction conditions, interfering substances, system stability, and pollutant-removal efficiency, the CuFe2O4/PAA system demonstrated great potential for the degradation of Rhodamine B.Keywords:peracetic acid (PAA);rhodamine B;copper ferrite (CuFe2O4);organic radicals (R-O˙)
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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2023
·
IF 9.9
Yaqiao Liu,Shuozhen Hu,Xinsheng Zhang,Shigang Sun
Fe 2 O 3 is a promising n -type semiconductor as the photoanode of photoelectrochemical water-splitting method due to its abundance, low cost, environment-friendly, and high chemical stability. However, the recombination of photogenerated holes and electrons leads to low solar-to-hydrogen efficiency. In this work, to overcome the recombination issue, a p-type semiconductor, CuO, is introduced underneath the γ-Fe 2 O 3 to synthesize γ-Fe 2 O 3 /CuO on the FTO substrate. Along with the formation of p-n heterojunction , CuFe 2 O 4 is in situ generated at the interface of γ-Fe 2 O 3 and CuO. The existence of Cu 2 O in CuO and CuFe 2 O 4 promotes the charge transfer from CuO to γ-Fe 2 O 3 and within CuFe 2 O 4 , respectively, resulting in creating an internal electric field in γ-Fe 2 O 3 /CuO and leading to the conduction band of CuO bending up and γ-Fe 2 O 3 bending down. Additionally, Cu(II) in CuFe 2 O 4 contributes to fast electron capture. Consequently, the charge transfer efficiency and charge separation efficiency of photo-generated holes are promoted. Hence, γ-Fe 2 O 3 /CuO exhibits an enhanced photocurrent density of 13.40 mA cm −2 (1.9 times higher than γ-Fe 2 O 3 ). The photo corrosion resistance of CuO is dramatically increased with the protection of CuFe 2 O 4 , resulting in superior high chemical stability, i.e. 85% of the initial activity remains after a long-term test.
研究领域:
材料科学
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能源科学
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半导体技术
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）