Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Qixia Dong,Yangju Li,Junyang Xiao,Shuxue Xiang,Xiuzhen Hou,Dongdong Chu,Zhuotong Zeng,Haoran Dong
In this work, the bimetallic oxide CuFeO 2 was synthesized by simple hydrothermal synthesis and utilized to activate peroxydisulfate (PDS) for the sulfamethazine (SMT) degradation in water. The influence of some key factors such as CuFeO 2 dose, PDS concentration and initial pH on the degradation of SMT was investigated. In particular, the CuFeO 2 /PDS system was capable of effectively degrading SMT under neutral and weak alkaline conditions. The mechanism of the CuFeO 2 /PDS system was revealed by quenching experiments and ESR tests. It involves a combined radical and non-radical mechanism with multiple active species (SO 4 •− , HO•, O 2 •− and 1 O 2 ) acting together. A synergistic interaction between iron and copper on the CuFeO 2 surface accelerated the conversion of Fe(III) to Fe(II), which is one of the advantages of CuFeO 2 over monometallic oxides. Furthermore, simulated experiments for the SMT degradation were conducted in different water matrices, and the effects of some inorganic ions (e.g. Cl - , SO 4 2- and HCO 3 - ) and humic acid were also explored. Exceptionally, HCO 3 - played a facilitating role for the removal of SMT. Finally, the CuFeO 2 /PDS system still exhibited superior performance after five cycles of testing. Overall, this study provided a cost-effective and promising strategy for the removal of antibiotics from the aqueous environment.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Jianyang Li,Jingqi Tian,Mengting Lu,Chenyu Yang,Huaiguo Xue,Tengfei Jiang
Delafossite structure CuFeO 2 has attracted researchers’ interest because of its narrow band gap, high stability, low cost and easy availability. However, due to the low efficiency of internal photoinduced charge separation, there is still a gap between its performance and practical application. Herein, a 2D on 2D CuFeO 2 /Co-LDH heterojunction was prepared by in situ growth method with enhanced charge separation efficiency resulted from the interfacial built-in electric field. Electrochemical and spectroscopic characterization were carried out which illustrated the energy band structure of heterojunction indicating the photoinduced electrons transfer from Co-LDH to CuFeO 2 . By fine-tuning the amount of precursor, we found that CuFeO 2 /Co-LDH-3 heterojunction showed the highest photocurrent of 6.07 μA/cm −2 , which presented optimal performance of photocatalytic selective oxidation of benzyl alcohol with the average conversion and selectivity of 84.33%, and 98.48%, respectively. This work proposes a preparation method of novel 2D on 2D CuFeO 2 /Co-LDH heterojunction, which promotes the development of the heterojunction photocatalysts .’
研究领域:
材料科学
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化学
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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
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2024
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IF 4.2
Wen-Rong Fu,Jian Yang,Zong-Yan Zhao
This investigation sought to improve the photoelectrochemical performance of CuFeO 2 -based photocathodes by integrating copper foam (CF) substrate to leverage enhanced light trapping and electrical conductivity. CuFeO 2 powders, synthesized via a hydrothermal method, were deposited onto various substrates including fluorine-doped tin oxide (FTO), smooth copper foil, rough copper foil, and CF, to construct the photocathodes. The CF substrate, characterized by its rough surface and three-dimensional porous architecture, demonstrated a superior capacity for light trapping, substantially augmenting light absorption efficiency. Concurrently, the inherent conductivity of copper facilitated improved carrier collection and transfer rates. Consequently, the CF/CuFeO 2 photocathode achieved the highest carrier concentration and the most rapid interfacial electron transport rate among the tested configurations. This resulted in the CF/CuFeO 2 photocathode achieving the highest photocurrent density, approximately 3.64 μA/cm 2 , which represents a tenfold increase compared to the FTO/CuFeO 2 photocathode. Furthermore, the CF/CuFeO 2 photocathode showcased notable mechanical and chemical stability, underscoring its potential for enhanced photoelectrochemical applications.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
CRYSTENGCOMM
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2023
·Vol. 25
·期 15
·2271-2279
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IF 3.1
Jingwen Hou,Bernard A. Goodman,Yuchen Lu,Qunyue Zhang,Bin Huang,Long Chen,Shoulei Xu,Wen Deng,Dingkang Xiong
Synthetic Ti-doped delafossite (CuFe1−xTixO2) was prepared by solid state reaction of Fe2O3, CuO and TiO2, and crystals were successfully prepared by the optical floating zone method using a modified experimental protocol that produced crystals in <10% of the time used in previous work. The effects of Ti on the microstructure and magnetic properties of CuFeO2 were investigated. The nonlinear change of cell size may be the result of Ti4+ reduction to Ti3+. However, the Fe oxidation state was not affected by Ti doping, although some oxidation of Cu+ to Cu2+ was observed with the highest Ti contents. The two characteristic magnetic transition temperatures of CuFeO2 occurred at 17 K (TN1) and 11 K (TN2) in the undoped crystal, and these increased to 51 K and 20 K, respectively, in the crystal with x = 0.007, although there was no major change in the two magnetic transition temperatures in crystals with other doping concentrations. In an applied magnetic field of 500 Oe, the magnetization of the x = 0.007 sample was 22 times that of CuFeO2, and its magnetization curve shows the coexistence of regions with ferrimagnetic and antiferromagnetic properties. Furthermore, magnetic hysteresis loops revealed that the saturation magnetization (M) of the sample x = 0.007 is 4.15 emu g−1, but at higher Ti concentrations the M–H curves returned to pairwise linear temperature dependence. Overall, crystals of synthetic delafossite with greatly affected magnetic properties can be prepared by doping with a limited range of Ti contents.
研究领域:
材料科学
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固体物理学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2021
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IF 7.086
Mengliang Wang,Cong Liu,Hang Shi,Tianyi Long,Chenyong Zhang,Bo Liu
The two shortcomings of the Fenton-like catalyst delafossite-type oxide (CuFeO 2 ) lie in its spontaneous agglomeration and deactivation under neutral working pH. To remedy these drawbacks, novel Fenton-like catalyst chitosan-derived maillard reaction productions coated CuFeO 2 with abundant oxygen vacancies (OV–CuFeO 2 @MRPs) was synthesized by hydrothermal method with no extra chemical reducing agent. The systemic characterization illustrated that richer oxygen vacancies and higher particles dispersion of OV-CuFeO 2 @MRPs contributed to better Rhodamine B (RhB) degradation under neutral pH compared to pure CuFeO 2 . Cooper antisite defects in OV-CuFeO 2 @MRPs were evidenced by X-ray powder diffraction (XRD), fourier transform infrared spectrometer (FTIR), Raman spectra and energy dispersive X-ray spectrometer (EDX) linescan. To keep the charge balance, OV-CuFeO 2 @MRPs should form rich oxygen vacancies, which was confirmed by X-ray photoelectron spectroscopy (XPS) and solid-state electron paramagnetic resonance spectrometer (solid-state EPR). Furthermore, the electrochemical impedance spectroscopy (EIS) analysis revealed that oxygen vacancies could improve the electron transfer . Scavenging experiments and electron spin resonance spectroscopy (ESR) analysis demonstrated that OH was main active radical during Fenton-like reaction, and the density functional theory (DFT) calculation verified that the oxygen vacancy could effectively adsorb H 2 O 2 and elongate O–O bond of H 2 O 2 , thus promoting the activation of H 2 O 2 into OH.
研究领域:
材料科学
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环境科学
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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
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IF 9.9
Yanan Dong,Dong Wang,Yingchen Zhu,Qianwen Wang,Guocheng Liu,Qinghua Yan,Yucan Liu,Qinghua Chen,Dong Ma,Guangshan Zhang,Shuaishuai Xin,Yanjun Xin
The self-sufficient heterogeneous photo-Fenton (SH-PF) system was constructed for doxycycline hydrochloride (DOH) degradation with hydroxyapatite (Hap) modified CuFeO 2 (Hap/CuFeO 2 ) composites through H 2 O 2 in-situ production. The modification of Hap could improve the specific surface area, visible-light response, light conversion efficiency, photoelectron lifetime and oxygen vacancies (OVs) of CuFeO 2 , which was conducive to H 2 O 2 production and DOH degradation in SH-PF system. Notably, Hap/CuFeO 2 fabricated with 0.5 g Hap (Hap/CuFeO 2 -0.5) displayed more superior performance for DOH degradation compared to other synthesized catalysts. The Hap/CuFeO 2 -0.5 load and initial solution pH for DOH degradation in SH-PF system were optimized, and the Hap/CuFeO 2 -0.5 had good reusability and stability. The • OH was the main active species for DOH degradation, and the facilitation effect of • O 2 – and photoelectrons on DOH degradation was associated with the H 2 O 2 production in the present work. In addition, the capture of photogenerated holes suppressed the recombination of photogenerated carriers, elevating the production of photoelectrons and thereby enhancing H 2 O 2 production and DOH degradation. The degradation pathways for DOH were proposed and the comprehensive toxicities of DOH were relieved after degradation in SH-PF system.
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
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wenjun Zhu,Shuai Zhang,Xiaohua Zuo,Xin Li,Xiangyi Deng,Guanghui Wang,Deng Ding,Chunlei Wang,JunTao Yan,Xiaobo Wang
The magnetic CuFeO 2 anchored on nitrogen-doped porous carbon (CuFeO 2 /NC) hybrid catalysts were further synthesized via hydrothermal reaction without the addition of a chemical reductant. The systematic CuFeO 2 /NC with larger specific surface areas (SSAs) and abundant active sites exhibited strong adsorption ability and great catalytic performance towards activating peroxymonosulfate (PMS) for sulfamethoxazole (SMX) removal. It was noted that 18 mg/L SMX was completely removed after 40 min of pre-adsorption and 30 min of oxidative degradation in CuFeO 2 /NC and PMS system. The degradation rate constant ( k ) was calculated by fitting as 0.166 min −1 , being about 7.9 times that in the CuFeO 2 and PMS system (0.021 min −1 ). The SO 4 · - ,·OH, and 1 O 2 as the dominant reactive oxygen species (ROSs) contributed to sulfamethoxazole degradation. The N species, active oxygen and the redox cycles of Cu(Ⅱ)/Cu(Ⅰ) and Fe(Ⅲ)/Fe(Ⅱ) were confirmed to play a vital role in the activation of PMS for the generation of ROSs. Based on the LC-MS analysis, the possible degradation routes of SMX in the PMS activation system by CuFeO 2 /NC were proposed.
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
WATER ENVIRONMENT RESEARCH
·
2025
·Vol. 97
·期 5
·e70070
·
IF 1.9
Fanye Wang,Jinnan Liu,Jingrui Liu,Xinchao Ruan,Xiaojun Yang
The widespread use of tetracycline has made the efficient and environmentally friendly treatment of tetracycline-contaminated wastewater a pressing issue in environmental management. This study synthesized high-purity and uniformly mixed Cu 0 /CuFeO 2 composite materials using a one-step hydrothermal method, aiming to enhance the catalytic activation of peroxymonosulfate (PMS) through the synergistic effect of zero-valent metal and bimetallic compounds. The Cu 0 /CuFeO 2 composite demonstrated exceptional PMS activation performance, achieving 84% tetracycline hydrochloride (TCH) degradation within 1 min and 91% degradation within 20 min. The degradation process involved the synergistic action of •OH, SO 4 •− , 1 O 2 , and electron transfer. The degradation intermediates of TCH were identified using high-performance liquid chromatography–mass spectrometry (HPLC-MS), and four potential degradation pathways were proposed. Furthermore, Cu 0 /CuFeO 2 exhibited robust degradation performance across a wide pH range and maintained high efficiency in complex aqueous environments. Even after five cycles, the composite retained 78% of its degradation efficiency, demonstrating excellent stability and reproducibility in the degradation of TCH using the Cu 0 /CuFeO 2 /PMS system. Practitioner Points A high-purity and uniformly mixed Cu 0 /CuFeO 2 composite was synthesized. Robust catalytic activity and stability was observed for the synthesized catalyst. Synergistic contributions from •OH, SO 4 •− , 1 O 2 , and e − resulted in TCH degradation. Four potential TCH degradation pathways were derived. Graphical A Cu 0 /CuFeO₂ composite was synthesized, characterized, and optimized to activate peroxymonosulfate (PMS) for degrading tetracycline hydrochloride (TCH) and related antibiotics. In this system, Cu 0 acted as an electron donor, facilitating electron transfer through the redox cycling of metal ions. This process sustained the continuous generation of reactive oxygen species—including •OH, SO₄•⁻, and ¹O₂—as well as electrons, thereby promoting the efficient degradation of TCH. Furthermore, four potential degradation pathways were proposed based on the identified degradation intermediates.
研究领域:
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
BIOMASS & BIOENERGY
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2025
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IF 5.8
Rui Zhang,Can Zhu,Yu Jiang,Yuming Ni,Nan Huang,Wanyun Tang,Minghui Fan,Quanxin Li
The development of green and efficient biomass pretreatment methods is of great significance for the conversion of lignocellulosic biomass into biofuels. The main objective of this work is to demonstrate a novel recyclable CuFeO 2 catalytic pretreatment way that can be used to promote the production of bioethanol and bio-jet fuel from corncob. Compared to untreated corncob, the biomass pretreated with CuFeO 2 catalyst showed higher sugar production (39.9 %) and higher ethanol production (35.6 %). Especially, the directional transformation of corncob to bio-jet fuel has been achieved by integrating biomass fermentation and catalytic synthesis process. The ethanol conversion of 94.3 % and jet fuel selectivity of 64.7 % were obtained in the process of biofuel synthesis. Based on biomass characterizations, catalyst characterizations and reactive oxygen species analysis, the possible role and mechanism of the CuFeO 2 catalytic pretreatment were outlined. The CuFeO 2 catalytic pr-treatment can be carried out by using the recyclable catalyst at atmospheric pressure and room temperature, which may provide a useful pretreatment way for promoting the biofuel production from lignocellulosic biomass.
研究领域:
生物能源
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催化化学
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环境科学
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产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Rui-Ping Li,Shui-Miao Yu,Zong-Yan Zhao
The development of CuFeO 2 photocathodes is hindered by challenges associated with low carrier separation and transport efficiency. In recent years, facet engineering has emerged as a promising solution to overcome these limitations. In this study, CuFeO 2 samples with varying crystal facets and morphology were successfully synthesized through precise control of hydrothermal reaction time, ultrasonic time, and the introduction of a surfactant . Among the synthesized samples, the nanosheet CuFeO 2 exhibited an impressive 83.36% exposure ratio of (001) facets and demonstrated the highest photocurrent density of 5.3 μA/cm 2 when compared to both cubic CuFeO 2 with (012) facets and octahedral CuFeO 2 with (001) facets. The exceptional photoelectrochemical performance of the nanosheet CuFeO 2 can be attributed to the polar nature of the (001) crystal plane, which induces a surface polarization effect. This effect significantly enhances the separation efficiency of photoexcited electron-hole pairs. Additionally, the nanoscale dimensions of the CuFeO 2 nanosheets minimize carrier diffusion distances, leading to improved carrier transport efficiency. Overall, this study highlights the feasibility and immense potential of employing facet engineering as a strategic approach for enhancing the photoelectrochemical performance of CuFeO 2 photocathodes. The successful synthesis of CuFeO 2 samples with optimized crystal facets opens up new avenues for advancing the development of efficient photoelectrochemical devices.
研究领域:
材料科学
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光电化学
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纳米技术
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能源材料
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DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 10
·1-15
·
IF 5.3
Xiao Aijin,Li Meng,Hu Yiluo,Zhang Wei,Bai Huiping,Pan Xuejun,Jiang Fengzhi
A CuFeO 2 /NiCo-LDH heterojunction electrochemical sensor (LDH: layered double hydroxide) was developed for the sensitive detection of tetracycline (TC). The sensor was constructed by integrating ZIF-67-derived nanocage NiCo-LDH on nickel foam with CuFeO 2 , forming a p-n heterojunction that enhanced electron transfer and TC adsorption. The sensor exhibited bilinear detection ranges (0.00594 ~ 1 and 1 ~ 25 μM) and a low detection limit of 1.98 nM. Recoveries in real water samples ranged from 92.0 to 109.0%, with relative standard deviations not exceeding 4.5%. In situ Raman spectroscopy and density functional theory calculations confirmed the involvement of multiple redox pairs (Ni 3+ /Ni 2+ , Co 3+ /Co 2+ , Fe 3+ /Fe 2+ and Cu 2+ /Cu + ) and strong interfacial adsorption energy. This sensor presents a practical and efficient approach for onsite TC monitoring. Graphical
研究领域:
环境监测
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电分析化学
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纳米材料
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传感器与生物传感器
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水质分析
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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）