Catalysts
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2026
·Vol. 16
·期 3
·250
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IF 4.5
Benqun Yang,Rui Yang,Lisha Dong,Haimei Xu,Shiming Qiu,Huimin Yang,Zhifeng Li,Guofang Zuo
Traditional oxidative dehydrogenation of n-butene has typically required relatively high operating temperatures (400–500 °C), which has driven increasing interest in the development of catalysts capable of delivering high activity at lower temperatures. In this study, zinc ferrite (ZnFe2O4-ST) was successfully synthesized via hydrothermal hydrolysis of Zn–Fe oleate and demonstrated remarkable catalytic performance for the oxidative dehydrogenation of n-butene under mild conditions. At 300 °C, ZnFe2O4-ST achieved a conversion of 72.9% with 92.1% selectivity toward 1,3-butadiene, a result that, to the best of our knowledge, ranks among the best reported in the literature. By contrast, ZnFe2O4prepared by conventional coprecipitation (17.2% conversion with 91.3% selectivity) and sol-gel (10.1% conversion with 86.4% selectivity) methods showed much lower activities, highlighting the critical influence of synthesis strategy on catalytic performance. To better understand the origin of these differences, a detailed structural and physicochemical characterization was undertaken using X-ray diffraction (XRD), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), N2adsorption–desorption, X-ray photoelectron spectroscopy (XPS), H2-temperature-programmed reduction (H2-TPR), temperature-programmed re-oxidation (TPRO), and NH3-temperature-programmed desorption (NH3-TPD). These analyses revealed that the as-synthesized ZnFe2O4-ST possessed a significantly smaller average particle size, a larger specific surface area, and superior reducibility compared with the other samples. These properties are believed to be the key factors underpinning its outstanding catalytic behavior and provide important insights into the design of efficient low-temperature catalysts for selective oxidative dehydrogenation.
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高影响因子
JOURNAL OF AOAC INTERNATIONAL
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2025
·
IF 1.7
Chen Hua,Zhang Hehua,Gu Xin,Pan hongzhi
BackgroundChlorogenic acid (CGA), a plant-derived phenolic compound, possesses antioxidant, anti-inflammatory, and antimicrobial activities. Accurate quantification is essential due to its therapeutic value and potential toxicity at high doses.ObjectiveTo develop a rapid, sensitive electrochemical method for CGA detection using spinel-based catalysts with improved conductivity.MethodsAn electrochemical sensing platform was constructed based on a nanocomposite of ZnFe2O4 and boron, sulfur and nitrogen co-doped reduced graphene oxide (BSN-rGO). This hybrid material effectively addresses the intrinsic poor conductivity of spinel oxides by leveraging the synergistic effect between the catalytic activity of ZnFe2O4 and the superior charge transport capability of BSN-rGO. The resulting sensor enabled rapid and quantitative analysis of CGA within two minutes.ResultsThe sensor showed a linear detection range of 1 × 10−4 −1 × 10−1 M and a low detection limit of 1 × 10−6 M (S/N = 3). Adding standard recovery reached 97.48% to 100.75%, with RSDs of 1.02% to 2.95%, indicating excellent accuracy and reproducibility in complex matrices.ConclusionThe proposed method enables rapid and reliable CGA detection in natural products, offering potential for pharmaceutical and food analysis.HighlightsBSN-rGO integration enhances spinel conductivity and boosts electrochemical sensing performance.
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CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Yujie Li,Haiming Zhang,Zhibiao Qiu,Ping Yang,Zongcheng Xu,Weiyan He,Bin Han
The detection of acetone holds significant importance for both non-invasive diabetes screening and industrial safety monitoring. In this work, novel ZnFe 2 O 4 /ZnO hollow core-shell nanospheres were synthesized via a two–step hydrothermal method for acetone detecting. The sensor performance was optimized by precise control the film thickness. Compared with pure ZnO and other samples, ZnFe 2 O 4 /ZnO with the optimal shell thickness exhibited superior acetone sensing performance, showing a response of 38.1 toward 100 ppm acetone at a lower operating temperature of 200 °C, which is more than three times higher than that of pure ZnFe 2 O 4 . The sensor also demonstrated excellent selectivity, rapid response and extremely low detection limit (0.08 ppm). The improved acetone sensing performance is attributed to the synergistic effect of heterojunction and the highly active Zn-terminated surfaces. Optimizing the ZnO shell thickness balances gas diffusion with maximized active surface exposure, thereby fully utilizing both mechanisms for superior sensitivity.
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ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
·
2025
·
IF 2.9
Hu Wenquan,Chen Zhikang,Chen Qi,Zhu Xixi,Qin Yifan,Wang Ming
Heterogeneous photocatalysis has been widely recognized as one of the most effective methods for organic wastewater treatment. In this study, ZnFe 2 O 4 /ZnO nanocomposite were successfully synthesized via a one-step hydrothermal method and characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), UV–Visible diffuse reflectance spectroscopy (DRS), and Brunauer–Emmett–Teller specific surface area analyzer (BET). The photocatalytic activities of ZnFe 2 O 4 /ZnO nanocomposites were evaluated in the degradation of organic pollutants under ultraviolet irradiation. The results demonstrate that ZnFe 2 O 4 /ZnO nanocomposites exhibited superior photocatalytic activity in degrading methylene blue (MB), ofloxacin antibiotic (OFL), and sulfadiazine (SDZ), which the degradation rates for MB, OFL, and SDZ were 95.90%, 75.83%, and 72.32%, respectively, with corresponding degradation times of 70 min, 160 min, and 90 min. These values represented respective improvements of 30%, 47.03%, and 27.72% compared to ZnFe 2 O 4 nanomaterials, as well as enhancements of 2.05%, 19.53%, and 19.52% relative to ZnO nanomaterials. The formation of ZnFe 2 O 4 /ZnO heterostructure effectively suppressed electron–hole recombination, thereby significantly enhancing both the activity and stability of the photocatalysts. Furthermore, The findings from the photocatalytic cyclic degradation experiment demonstrate that the ZnFe 2 O 4 /ZnO nanocomposites exhibit excellent reusability as photocatalysts and hold significant potential for application in the treatment of industrial wastewater containing organic pollutants.
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INORGANIC CHEMISTRY
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2018
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IF 4.7
Shumin Wu,Yan Xu,Xianliang Li,Ruifei Tong,Lu Chen,Yide Han,Junbiao Wu,Xia Zhang
Engineering semiconductors with porous hierarchical micro-/nanostructures is a feasible strategy to obtain high solar-light utilization efficiency and strong photocatalytic performance. In this work, an integrated strategy of solvent evaporation and morphology-inherited annealing for the Fe-based metal–organic framework was developed to prepare the hierarchical spinel zinc ferrite (ZnFe2O4) micro-/nanostructure. The morphology and porosity of the hierarchical ZnFe2O4 structures can be adjusted by optimizing the annealing temperatures. Benefitting from magnetic separation performance, these highly visible light-responsive hierarchical ZnFe2O4 micro-/nanostructures are demonstrated to be multifunctional photocatalytic materials, and their photocatalytic activity and reproducibility were analyzed, and the photocatalytic mechanism was also investigated. This work provides a controlled and generic route for constructing novel hierarchical semiconductors with specific compositions and intriguing structures.
研究领域:
材料科学
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环境科学
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PubMed
高影响因子
DESALINATION
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2022
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IF 11.211
Zhuoran Yang,Dan Yang,Chunyu Yang,Kai Yu,Xiang Chen,Fengyu Qu,Wei Guo
Desalination using solar-driven water evaporation is one of the most efficient, green, and sustainable approaches. However, the purification of oil-contaminated seawater, salt inhibition, and recovery of water evaporators remain challenging. Herein, a water evaporator based on a C/ZnFe 2 O 4-x composite deposited on floral foam (FF) was developed, and its water evaporation performance was optimized by adjusting the reaction and calcination temperatures, concentration of deposited C/ZnFe 2 O 4-x , and height of the FF. Owing to the excellent optical properties of C/ZnFe 2 O 4-x , the water evaporator absorbed more than 96 % of sunlight in the wavelength range of 280–2500 nm, and its excellent magnetic properties promoted the recycling of the evaporator using a magnetic drive. The evaporator exhibited an excellent solar evaporation rate of 4.06 kg m −2 h −1 , and a high light-to-heat conversion efficiency of 95.4 % under one-sun irradiation. The water evaporator exhibited excellent salt inhibition properties, and no salt crystals formed during the water evaporation process. The total organic carbon and organic dissolved matter in the purified water were significantly lower than those of the oil-contaminated seawater. Because of its low cost, high evaporation rate , and excellent durability, recyclability , and salt inhibition properties, the 3D evaporator can be a reliable device for purifying oil-contaminated seawater.
研究领域:
材料科学
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环境科学
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Catalysis Science & Technology
·
2017
·Vol. 7
·期 18
·4092-4104
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IF 5.773
Zhi Zhu,Yang Yu,Hai Huang,Xin Yao,Hongjun Dong,Zhi Liu,Yongsheng Yan,Chunxiang Li,Pengwei Huo
A unique Ppy@CdS/ZnFe2O4 nanoreactor is fabricated via the microwave-hydrothermal method and surface-imprinting technique, which effectively enhances the recyclability, stability, and selectivity for recognition and degradation of tetracycline under visible-light irradiation. The as-prepared functional nanoreactor enables photocatalytic reactions with little loss of activity during the recycling process. In addition, the capture experiments and ESR exploration show that h+ and ˙OH play the major roles in this photocatalytic reaction. Therefore, this study not only puts forward a novel design concept that develops the potential application value of CdS, but also provides a new approach for inhibiting its secondary pollution. Moreover, this nanoreactor has huge potential for the continuous and selective decomposition of specific pollutant molecules according to practical requirements.
研究领域:
环境科学
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材料科学
·
化学工程
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高影响因子
CERAMICS INTERNATIONAL
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2024
·
IF 5.1
Xingliang Chen,Di Lan,Luoting Zhou,Zhen Zeng,Yongkun Liu,Suxuan Du,Zhuanyong Zou,Guanglei Wu
As typical magnetic materials, ferrites and their composites play dominant roles in the design of high-performance electromagnetic wave (EW) absorber. Solvent thermal method is the most popular route for synthesizing ferrites, while systematical comparison research about the influence of reaction solvents of solvent thermal process on ferrite based material's EW absorption performance has rarely been carried out. Thus in this work, we adopted cotton fabric as raw material, and synthesized two kinds of zinc ferrite decorated hollow carbon cloth (CC@ZnFe 2 O 4 ) composites through solvent thermal reaction where deionized water and ethylene glycol was adopted as reaction solvents, respectively. After comprehensive and detailed comparison of the structures and performances of these two ferrite composites, the CC@ZnFe 2 O 4 synthesized in deionized water phase possesses an ideal optimal absorption efficiency for EW, that is the minimum reflection loss (RL min ) of −46 dB, while the effective absorption bandwidth of CC@ZnFe 2 O 4 composites synthesized in ethylene glycol phase is wider (4.9 GHz). The synergistic effect of impedance matching, interface polarization, magnetic resonance , and multiple reflections co-determined the ideal EW absorption performances of these two samples. The research can not only provide new guidance for the secondary utilization of waste textiles, but also become an important reference for the preparation of ferrite based high-performance EW absorbers through solvent thermal method.
研究领域:
材料科学
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电磁学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Tiantian Cao,Qiaolin Li,Gang Chen,Hongtao Guan,Chengjun Dong
Sensitive and selective acetone detection is critical for environmental monitoring and disease diagnostics, yet current sensors suffer from high operating temperatures and insufficient sensitivity. This study innovatively proposes an electrostatic self-assembly strategy to uniformly anchor small ZnFe 2 O 4 nanoparticles (around 20 nm) onto MOFs-derived one-dimensional (1D) hollow In 2 O 3 nanotubes, leading to the successful construction of an In 2 O 3 @ZnFe 2 O 4 core-shell heterostructure. The sensor based on In 2 O 3 @ZnFe 2 O 4 -7.5 exhibits a high response of 278 towards 200 ppm acetone at 200 °C, a low detection limit of 50 ppb with response of 1.85, good stability and moisture resistance. It is believed that the excellent sensing performance mainly originated in the formation of n-n heterojunction interfaces to enhance interfacial charge transfer and the effective suppression of ZnFe 2 O 4 aggregation. Thus, this work provides a facile strategy for the fabrication of heterojunction for gas sensors.
研究领域:
材料科学
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气体传感技术
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纳米材料
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环境监测
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疾病诊断
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高影响因子
ACTA MATERIALIA
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2025
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IF 9.3
Ramzi Nasser,Habib Elhouichet,Zhou Li,Ji-Ming Song
Engineering nanocomposites based on transition metal oxides (TMOs) shows an extensive interest due to their synergistic effects and strong interfacial interactions. In this report, a novel ZnFe 2 O 4 @ZnCo 2 O 4 nanocomposite is bridged on Ni-Foam through one pot-hydrothermal way. The nanocomposite exhibits synergistic properties due to the build of a Mott-Schottky heterojunction, which enhances interfacial interactions, provides pathways for ion migration and diffusion, and enables rapid charge transfer, thereby improving energy storage dynamics. In full 3 electrode system, the ZnFe 2 O 4 @ZnCo 2 O 4 electrode delivers extraordinary specific capacity of 913.7 C·g −1 (0.5 A·g −1 ), keeps marvellous capacitance retention of 79 % at 30 A·g −1 , and a long cycle life with only 7 % capacity loss after 20,000 rounds. More encouragingly, an asymmetric supercapacitor device of ZnFe 2 O 4 @ZnCo 2 O 4 //active carbon (AC) delivers an impressive energy density of 73.77 Wh·kg −1 at 490 W·kg −1 power value. Two devices in series can successfully operate a white LED for several minutes. The foldability characteristic of the device shows good electrochemical properties even at various bending angles. Therefore, the new ZnFe 2 O 4 @ZnCo 2 O 4 nanocomposite endorsed by Mott-Schottky junction, effectively addressed the charge states at the interface and ensured the specificity of electrode material, leading to superior electrochemical performance.
研究领域:
材料科学
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电化学
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能量存储与转换
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纳米材料
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过渡金属氧化物
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Li Lv,Pengfei Cheng,Yinglin Wang,Luping Xu,Bao Zhang,Chao Lv,Jian Ma,Yue Zhang
In this paper, the preparation process and gas sensing performance of Sb-doped three-dimensional spinel ferrite (3D ZnFe 2 O 4 ) with well-assembled macroporous spherical structure have been investigated. Sb-doped 3D ZnFe 2 O 4 macroporous spheres (MPs) were prepared through a one-step ultrasonic spray pyrolysis (USP) method by sacrificing self-assembly sulfonated polystyrene spheres (S-PSs). The interconnected macropores (an average pore size about 200 nm) can be observed in the as-prepared materials by SEM and TEM characterization, which provided the dual functions of accelerating the diffusion of gas molecules and providing more reactive sites. The XPS analysis showed that the element Sb existed as Sb 5+ in doped samples. Compared with the pure 3D ZnFe 2 O 4 MPs (response = 18), 0.5 % Sb-doped sample presented the response of 35.5–100 ppm n-butanol at 250 °C, and also revealed excellent selectivity and long-term stability to n-butanol. The greatly enhanced sensing performance of Sb-doped simples can be attributed to the construction of 3D spheres with interconnected macroporous structures and the modification of Sb doping. The formation of p-n junctions at interface through Sb doping also improved the sensing performance for n-butanol. In addition, the relative sensing mechanism of Sb-doped 3D ZnFe 2 O 4 MPs for n-butanol sensing has been discussed in detail.
研究领域:
材料科学
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传感器技术
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高影响因子
JOURNAL OF POWER SOURCES
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2015
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IF 6.217
Xiao-Bin Zhong,Zhi-Zheng Yang,Hui-Yuan Wang,Lun Lu,Bo Jin,Min Zha,Qi-Chuan Jiang
Despite the fact that ZnFe 2 O 4 has various advantages as promising anode materials for lithium ion batteries (LIBs), ZnFe 2 O 4 chronically suffers from limited cycle life, originating from poor electronic conductivity and huge volume changes. In this study, we address these traditional issues of ZnFe 2 O 4 by fabricating a mesoporous nanorod structure through a novel, facile and scalable co-precipitation approach followed by thermal decomposition. The unique nanostructure not only effectively shortens the pathway for Li + diffusion, but also provides a high porosity to effectively tolerate volume variation during charge/discharge processes. The reversible capacity of ZnFe 2 O 4 can still reach 983 mAh g −1 at a specific current of 100 mA g −1 after 50 cycles. Mesoporous ZnFe 2 O 4 nanorod could be demonstrated as a promising anode material for lithium-ion batteries.
研究领域:
材料科学
·
能源存储技术
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高影响因子
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