JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Lixin Sun,Yunong Qin,Lishan Fu,Yutong Di,Kaidi Hu,Hailong Li,Ling Li,Wenming Zhang
Secondary zinc-air batteries (ZABs) with a free-standing and flexible air electrode integrated with distinguished bifunctional oxygen electrocatalysts are crucial for achieving better performance. Herein, benefitting from the rational design and simple synthesis, a highly controlled design can be achieved for the first showing of the synthesis of Co 3 O 4 /Fe 2 O 3 NAs@CNFs with a unique hierarchical nanostructure , consisting of randomly distributed zero-dimensional (0D) Co 3 O 4 /Fe 2 O 3 nanoparticles embedded in two-dimensional (2D) MOF derived nitrogen-doped mesoporous carbon flake nanoarrays grown on three-dimensional (3D) microporous network with interconnected conductive one-dimensional (1D) carbon nanofibers from carbonized electrospinning polymer nanofiber film (PMNFs). Under the synergy of 3D hierarchical porous nanostructure and abundant accessible active sites, Co 3 O 4 /Fe 2 O 3 NAs@CNFs is endowed with excellent bifunctional electrocatalytic activities like those of commercial Pt/C and RuO 2 , respectively. Rechargeable aqueous ZABs based on Co 3 O 4 /Fe 2 O 3 NAs@CNFs as air electrodes outperform their counterparts based on Pt/C and RuO 2 loaded carbon nanofibers (CNFs) as air electrodes, with a maximum power density of 246 mW cm −2 and excellent cycling stability with no increased polarization even after 40 h. And the assembled flexible solid-state ZABs with Co 3 O 4 /Fe 2 O 3 NAs@CNFs also display superior performance and bendability.
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ENVIRONMENTAL RESEARCH
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2025
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IF 7.7
Mengru Shi,Weijiang Tang,Sheng Guo,Fengxi Chen
Emerging antibiotic pollutants pose long-term risks to ecosystems and human health, necessitating the development of advanced elimination technologies. In this study, hierarchically porous α-Fe 2 O 3 nanosheets (α-Fe 2 O 3 -PNS) were prepared from an iron-polyvinylpyrrolidone (Fe-PVP) hybrid gel, where PVP served multiple functions, including iron immobilization, morphology template, pore formation, and crystallite growth regulation. As an efficient heterogeneous Fenton-like catalyst, α-Fe 2 O 3 -PNS achieved 93.6 % degradation of tetracycline (TC, 25 mg/L) within 2 h under mild conditions (25 °C, pH 5) using only 4 mM H 2 O 2 . The reaction followed pseudo-first-order kinetics with a high rate constant (0.0606 min −1 ) and an outstanding normalization factor (8.13). Key operational parameters (i.e., PVP dosage, catalyst loading, H 2 O 2 concentration, initial pH, coexisting anions and natural organic matter) were investigated. The material exhibited good reusability over five consecutive cycles and maintained robust performance in real water matrices. Its superior catalytic activity originated from exposed (113) crystal planes, abundant accessible iron sites, and rapid Fe 3+ /Fe 2+ redox cycling facilitated by the large surface area. Radical quenching tests and electron paramagnetic resonance spectroscopy confirmed that hydroxyl radicals, generated via surface Fe 2+ -mediated H 2 O 2 activation, are dominant reactive species, driving TC degradation through hydroxylation, oxidative cleavage, and ring-opening reactions. This study provides an energy- and resource-efficient solution for sustainable water remediation, operating effectively under ambient and circumneutral conditions with low H 2 O 2 consumption.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 27
·1-13
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IF 2.8
Anjum Muhammad Naveed,Qayyum Muhammad Abdul,Zulfiqar Zunaira,Ahmad Mirza Nadeem,Saif Muhammad Jawwad,Bahadur Ali,Iqbal Shahid,Mahmood Sajid,Alotaibi Khalid M.,Farouk Abd-ElAziem
Based on an appropriate procedure and little toxicity to living things, photocatalytic degradation is noted as one of the best ways to address environmental problems, especially for the effective breakdown of organic pollutants. The present work was aimed at investigating the photocatalytic performance of oxides as ternary nanocomposites in the degradation of Direct Red 28 dye in aqueous solution under solar light. The solvothermal process was employed for the synthesis of Gray-TiO 2 /ZnO/α-Fe 2 O 3 composites. The constructed composite was characterized by means of FTIR, PL, XRD, and SEM, among other methods. The photocatalytic activity of the composite enhances up to 98.82% at pH 3, while it reduces up to 72.21% with an increasing concentration of initial dye at 30 mgL −1 . The synthesized composite had a degradation efficiency of around 99% for Direct Red 28 dye since its recombination rate was high. After the four cyclic runs of the used composite, 85% degradation of Direct Red 28 was observed, which substantiates that the Gray-TiO 2 /ZnO/α-Fe 2 O 3 composite is a stable and efficient catalyst.
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MATERIALS CHARACTERIZATION
·
2026
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IF 6.2
Haohua He,Panpan Lin,Tong Wu,Qianrun Zhang,Haodong Li,Ligupan Zhang,Xin Yue,Tiesong Lin,Peng He
In this article, we designed a novel Bi 2 O 3 -B 2 O 3 -BaO-Fe 2 O 3 (BBBF) magnetic glass-ceramic braze with various Fe content to fabricate YIG ferrite. • The network structure, thermal properties, crystallization behavior, magnetism of the glass braze were systemically reported. • YIG/BBBF glass /YIG joints showed desirable mechanical reliability and magnetic performance by controlling the in-situ crystallization of target phase BaFe 12 O 19 . • The highest shear strength of the joints was 62.6 MPa and the maximum of the joints' saturation magnetization intensity was 28.01 emu/g (over 97% of the base material), which is the first time that the magnetic performance of YIG/YIG joint has reached such a level. • We have revealed the regulation mechanism of the target magnetic phases on the magnetic performance of the joints, providing a theoretical basis for further improving the performance of functional device. A new designed Bi 2 O 3 -B 2 O 3 -BaO-Fe 2 O 3 magnetic glass-ceramic braze was developed to fabricate yttrium iron garnet ferrite (YIG) integrated structure. The magnetism level of the glass braze was controlled by in-situ crystallization of magnetic phase BaFe 12 O 19 and transitional phases. The saturation magnetization intensity of the glass brazes reached its maximum of 7.83 emu/g after designed heat-treatment for crystallization. YIG/BBBF glass/YIG joints showed not only outstanding mechanical strength but also desirable magnetic performance. The shear strength of the joints was up to 62.6 MPa, and the saturation magnetization intensity of the joints was up to 97% of YIG base material, which indicated almost no attenuation of the joints' magnetic performance compared with YIG base material. The mechanisms of the target magnetic phase BaFe 12 O 19 on the mechanical and magnetic performance of the joints were deeply elaborated, laying theoretical foundation for the magnetic control of ferrite device joints.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Qiuxia Liu,Meicheng Wen,Yunlong Guo,Shengnan Song,Guiying Li,Taicheng An
Cyclohexane, a typical volatile organic compound (VOC), poses high risks to the environment and humans. Herein, synthesized PdAg/Fe2O3 catalysts exhibited exceptional catalytic performance for cyclohexane combustion at lower temperatures (50% mineralization temperature (T50) of 199 °C, 90% mineralization temperature (T90) of 315 °C) than Pd/Fe2O3 (T50 of 262 °C, T90 of 335 °C) and Fe2O3 (T50 of 305 °C, T90 of 360 °C). In addition, PdAg/Fe2O3 displayed enhanced stability by alloying Ag with Pd. The redox and acidity of the PdAg/Fe2O3 were studied by XPS, H2-TPR, and NH3-TPD. In situ diffuse reflectance infrared Fourier transform spectroscopy and proton-transfer-reaction time-of-flight mass spectrometry were applied to identify the intermediates formed on the catalyst surface and in the tail gas during oxidation, respectively. Results suggested that loading PdAg onto Fe2O3 significantly enhanced the adsorption and activation of oxygen and cyclohexane, oxidative dehydrogenation of cyclohexane to benzene, and catalytic cracking of cyclohexane to olefins at low temperatures. This in-depth study will benefit the design and application of efficient catalysts for the effective combustion of VOCs at low temperatures.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Xiaoshi Lang,Ruiyin Ren,Xinxi Wang,Lan Li,Kedi Cai
Lithium-sulfur batteries are considered as promising energy storage systems owing to rather high theoretical specific capacity (1675 mAh.g −1 ) and low cost. Nevertheless, the practical prospect is always limited owing to some short-comings, such as sulfur insulation, volume alternation and shuttle effect. To solve these problems, Cu 2+ regulated Fe 2 O 3 nanospheres (Fe 1−x Cu x O 1.5-δ ) as high-performance matrixes for sulfur composite cathodes of lithium-sulfur batteries are constructed via a facile hydrothermal method . It indicates that Cu 2+ regulation can increase the lattice size and exhibit uniform nanospheres micromorphology with less serious agglomeration. Moreover, as sulfur loading material can realize the joint effect on the physical and chemical confinement and some dissociate excess Cu 2+ with sulfur also can directly compose some Cu-S structures, further stabilizing the structure of sulfur composite cathode. In addition, Fe 0.6 Cu 0.4 O 1.5-δ /S composite cathode with sulfur loading mass ratio to 1:3 has fast electrochemical reaction kinetics with the low charge transfer resistance (25.54 Ω) and the high lithium-ion transfer efficiency (D Li+ =2.59 ×10 −12 cm 2 ·s −1 ) and the initial specific discharge capacities and ideal capacity retention accompanied by a charge and discharge voltage platform with small fluctuation.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Shuai Wang,Changhao Yao,Yifeng Cai,Yang Yang,Huiyuan Ma,Baojiang Jiang,Jun Ma
In this study, α-Fe 2 O 3 /rGO was smoothly synthesized by a one-step method and employed to activate persulfate (PS) for the degradation of Bisphenol A (BPA) under sunlight. During the degradation experiment, the degradation rates of BPA for PS, α-Fe 2 O 3 /8% rGO, and α-Fe 2 O 3 /8% rGO/PS were 6.6%, 47.6%, and 99.1%, respectively, indicating that the introduction of α-Fe 2 O 3 /rGO and PS significantly enhanced the photocatalytic efficiency because that photocatalytic process and PS activation coupling system not only inhibited the recombination of photo-induced carrier pairs, but also reduced the energy consumption of PS activation. Moreover, electron spin resonance spectroscopy (ESR) and trapping experiments were utilized to explore the active species generated during the reaction. The results showed that •OH and •SO 4 2- were the principal oxidative species in this reaction system. These results showed that Fe-loaded rGO has great potential for activating PS to decompose pollutants in water.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xiaoyang Wang,Jianguo Huang,Hao Feng,Jinfeng Li,Zidie Pu,Xiangchun Yin
The hierarchical architecture constitutes one of the key factors affecting the performance of microwave absorbing materials (MAMs). Herein, core-shell Fe 3 O 4 with a dendritic hierarchical structure is fabricated successfully by the melting method in a SiO 2 -B 2 O 3 -Al 2 O 3 -CaO-Fe 2 O 3 multi-component system. The multiple transmission scattering absorption mechanism is mediated by the unique microstructure, thus improving the impedance matching and the microwave loss ability of the material. According to its reflection loss curve, the microwave absorption was efficiently optimized, yielding a minimum reflection loss (R L ) of − 54.26 dB when the thickness was 3.47 mm, and the effective bandwidth (R L <10 dB) for electromagnetic wave reflectance reached 3.28 GHz (6.48–9.76 GHz) with a sample thickness of 1.8 mm. The present work adds new useful information for the designing of high-performance glass-ceramic MAMs.
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ELECTROCHIMICA ACTA
·
2017
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IF 4.798
Hao Wang,Xiaocao Cheng,Fengxiang Yin,Biaohua Chen,Tianyu Fan,Xiaobo He
A urea/carbon nanotubes (CNTs)-decorated metal-organic gel(Fe) was used as self-sacrifice precursors to prepare nano-sized Fe-Fe 2 O 3 @N-doped-C(NC) particles scattered on N-doped CNTs (NCNTs) through pyrolysis at 700 °C in N 2 . The particles with average size of ∼10 nm have core@shell structures with Fe-Fe 2 O 3 cores and NC shells, and the Fe-Fe 2 O 3 cores effectively connect with the NCNT scaffolds via the NC shells. Such a unique structure makes the material a superior oxygen reduction catalyst with an early onset potential (0.92 V), an early half-wave potential (0.72 V), a high current retention (91.7%, after 20,000 s), and good methanol tolerance in an alkaline electrolyte, enabling the catalyst the best among the developed Fe-FeO x oxygen reduction catalysts.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Tao Xiang,Fang Li,Mingyao Yuan,Zhenxing Zeng,Hong Peng,Hong Xiao,Xiaohui Lu,Yanzong Zhang,Shihuai Deng,Guangshan Zhang,Peng Xu,Tianyao Shen,Xueming Dang,Xiaojing Wang
Ineffective utilization of generated oxidants, such as H 2 O 2 , together with the nonselectivity of •OH, the principal active species, has significantly hindered the growth of discharge plasma in application for wastewater treatment. Herein, the introduction of constructed Fe 2 O 3 /TiO 2 heterojunction to dielectric barrier discharge plasma (DBDP) not only increased oxidant utilization, but also triggered a shift of decisive position of active species from •OH to selective 1 O 2 and O 2 • - towards bisphenol A (BPA) degradation. Experiments and theoretical calculations collectively revealed that the above process was realized under the joint drive of high-energy electrons, photons, and an interfacial electric field in Fe 2 O 3 /TiO 2 heterojunction. Among them, the interfacial electric field facilitated the separation of electron-hole ( e - - h + ) pairs and the transfer of charge to the antibonding orbit for O-O in H 2 O 2 , dissolved O 2 and O 3 absorbed on the metal sites. Such a work offered theoretical guidance for the ongoing growth of discharge plasma at both the macro and micro levels.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Weiguang Hu,Qinghua Xia,Lian Ying Zhang,Jianguo Lu,Qinggang He,Weiyong Yuan
Amorphous MOFs (a-MOFs) could be highly promising cocatalysts of 3-D α-Fe2O3 to greatly improve its photoelectrochemical oxygen evolution performance, but their effective synthesis and assembly on 3-D α-Fe2O3 presents formidable challenges. A conformal and ultrathin layer of amorphous Co–TDPAT (a-Co–TDPAT) MOF cocatalyst has been in situ self-assembled on an α-Fe2O3 nanosheet array (NSA) by employing 5,5′,5″-(1,3,5-triazine-2,4,6-triyl)tris(azanediyl)triisophthalic acid (H6TDPAT) as the organic ligand. The obtained α-Fe2O3 NSA@a-Co–TDPAT core–shell NSA exhibits a photocurrent density of 1.54 mA cm−2 (1.23 V), onset potential of ∼0.48 V, and photoconversion efficiency of 0.25%, 6.2 times higher, 290 mV lower, and 12.5 times higher, respectively, than those of the α-Fe2O3 NSA. The photocurrent density and the photoconversion efficiency are among the highest reported for photoanodes based on the FTO-supported α-Fe2O3 NSA without addition of noble metals, and the onset potential is the lowest among those of FTO-supported α-Fe2O3-based photoanodes reported. It is discovered that a-Co–TDPAT significantly enhances charge separation and accelerates charge transport and transfer for a fast oxygen evolution reaction, thus greatly boosting PEC oxygen evolution. This work not only provides a novel strategy to produce highly efficient, highly stable, low-cost, and earth-abundant core–shell water splitting photoanodes via in situ self-assembly of conformal, ultrathin a-MOFs on an α-Fe2O3 NSA, but sheds light on the mechanisms for controlled self-assembly of MOFs and PEC performance enhancement of α-Fe2O3-based photoelectrodes.
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BIOELECTROCHEMISTRY
·
2024
·
IF 4.8
Zhihao Xu,Zhixiang Lv,Huijiao Yang,Jiashuo Zhang,Zijie Sun,Dawei He,Ruijiang Liu
A label-free electrochemical DNA detection strategy based on self-assembled α-Fe 2 O 3 /Fe 3 O 4 nanosheets with PNA-DNA hybridization process was developed for ultrasensitive detection of APOE ε4 gene, one of the most robust genetic risks for Alzheimer’s Disease (AD). In this work, magnetic α-Fe 2 O 3 /Fe 3 O 4 heterogeneous nanosheets were prepared by hydrothermal-calcined reduction method and loaded with Au nanoparticles (AuNPs) on their surfaces. The magnetic α-Fe 2 O 3 /Fe 3 O 4 @Au nanocomposites significantly enhanced the electrochemical response as a signal amplification matrix and were able to bind to the magnetic glassy carbon electrode (MGCE) surface by magnetic self-assembly. Moreover, owing to the high specificity and stable binding capacity of PNA with respect to the target DNA, the biosensor not only enabled accurate (the limit of detection was estimated to be 0.147 pM) and rapid detection of the APOE ε4 gene, but also exhibited excellent specificity, stability and regeneration capability. Additional, the satisfactory recoveries were also obtained in real samples of human serum, ranging from 92.83 % to 106.22 % with relative standard deviation (RSD) between 0.25 % and 1.85 %. The results possessed important reference value for exploring the application of DNA biosensor technology in the diagnosis of APOE gene mutation.
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