Journal of Environmental Sciences
·
2025
·
IF 6.3
Mengqi Bu,Li Yi,Yingjie Wen,Minli Wang,Hao Yang,Chaohao Chen,Dengsong Zhang,Xu Chen,Zhiyi Lu
Electro-activating peroxydisulfate (PDS) based on the cathode represents a highly promising advanced oxidation process; however, its longevity is constrained by cathode leaching. In this work, we demonstrate that the γ-FeOOH/Fe Foam and α-Fe 2 O 3 /Fe Foam obtained by engineering a protective layer containing iron and oxygen on Fe Foam exhibit significantly extended service life of 53 h and 47 h, 2.94-fold and 2.61-fold longer than that of the original Fe Foam (18 h), while showing similar pseudo-first-order kinetics. Structural evolution analysis and density functional theory simulations reveal that surface oxygen plays a crucial role in reducing the leaching of Fe from the cathode by immobilizing Fe ions and converting them in-situ into stable Fe 3 O 4 . The electro-activation mechanism of PDS on the cathode, the degradation pathways of atrazine (ATZ), and the effects of operating conditions are systematically investigated and elucidated. This work underscores the pivotal role of surface oxygen in prolonging the longevity of Fe-based cathodes, thereby contributing to the development of protective layers.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Tiancheng Na,Yang Liu,Xiangcun Li,Wenji Zheng,Yan Dai,Zhijun Yan,Wei Kou,Gaohong He
We report a method based on 2,4-dihydroxybenzoic acid-formaldehyde (RF-COOH) microsphere hard templates to prepare core-shelled Fe 2 O 3 microspheres , which were then added to graphene oxide to obtain hierarchical reduced graphene oxide, ultimately dropping Fe 2 O 3 (Fe 2 O 3 @rGO) by Vitamin C reduction and freeze drying. When used as cathode materials for lithium-sulfur batteries, Fe 2 O 3 @rGO shows a high specific capacity of 400.5 mAh g −1 at 2 C after 500 cycles. The prominent performance is due to the collaborative assembly of rGO , which provides stable structural support and favourable conductivity, and core-shelled Fe 2 O 3 microspheres, which are certified to have a strong interaction with polysulfides. The loose and stable skeletons of highly electroconductive rGO can offer a conductive framework for rapid ion/electron transport. Meanwhile, the unique core-shelled structure of Fe 2 O 3 with the ample void space can anchor polysulfides through the strong chemical adsorption and buffer the mechanical stresses caused by volume expansion during the charge and discharge processes. Moreover, Fe 2 O 3 promotes the transformation of polysulfides to insoluble LiPSs during the discharging process, effectively alleviating the shuttling of the polysulfides.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2013
·Vol. 40
·期 1
·2395-2399
·
IF 1.789
Changbai Liu,Hao Shan,Li Liu,Shouchun Li,Haiying Li
Pristine and Ce-doped (3, 4, 5 at% Ce) α -Fe 2 O 3 nanotubes were synthesized by electrospinning method . The morphologies and structures of these samples were characterized by scanning electron microscope (SEM) and X-ray powder diffraction (XRD). The gas sensing properties of the four samples were investigated. The results showed that the sensitivity of the 4 at% Ce-doped α -Fe 2 O 3 nanotubes reached 21.5–50 ppm acetone at 240 °C, which was about 8.3 times larger than that of pure α -Fe 2 O 3 nanotubes . Meantime, the response and recovery times were about 3 and 8 s, respectively. The sensitivity of the lowest detecting limit to 1 ppm acetone was about 3. Moreover, the sensor also possessed the good selectivity and long-term stability to acetone.
研究领域:
材料科学
·
纳米技术
·
气体传感
·
化学传感器
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·Vol. 143
·期 32
·e70922
·
IF 3.1
Shaorong Zeng,Huanyu Wu,Xiaoyi Fu,Junning Gao,Zhenya Lu
Hematite (α-Fe 2 O 3 ) is a promising supercapacitor anode due to its high theoretical capacity, low cost, and eco-friendliness, yet its application is hindered by poor conductivity and structural instability. Herein, a unique Fe 2 O 3 composite encapsulated within a polyaniline-derived N, S, Cu-doped carbon layer was fabricated on carbon cloth via an integrated method involving hydrothermal growth, Cu 2+ -catalyzed electrodeposition, and carbonization. This conformal carbon sheath acts as a synergistic conductive network, mechanical buffer, and source of active sites. The optimized Fe 2 O 3 /CN electrode exhibits a high specific capacitance of 517.15 F g −1 at 1 A g −1 and dramatically enhanced cycling stability with 92.48% retention after 5000 cycles, far exceeding pure Fe 2 O 3 (51.15%). The assembled solid-state asymmetric supercapacitor (Fe 2 O 3 /CN@CC//PANI@CC) delivers an energy density of 33.82 Wh kg −1 at 737.5 W kg −1 and maintains 87.57% capacity after 5000 cycles. This work demonstrates an effective polymer-derived carbon coating strategy for developing durable, high-performance metal oxide-based electrodes.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Tianjun Hu,Yaru Chen,Ying Wang,Mengtian Kang,Jiale Li,Junming Zhang,Ergui Luo,Jianfeng Jia
Amorphous metal oxides offer unique advantages for gas sensing due to their disordered structures and abundant defects, yet their potential for Triethylamine (TEA) detection remains underexplored. This study investigates the gas sensing performance of amorphous and crystalline Fe 2 O 3 for TEA detection, aiming to explore the potential of amorphous Fe 2 O 3 as a superior alternative to traditional crystalline Metal Oxide Semiconductors (MOS). The structural and morphological characteristics of the samples were analyzed, revealing that amorphous Fe 2 O 3 possesses a higher specific surface area and a disordered structure with abundant oxygen vacancies. The gas sensing tests showed that the amorphous Fe 2 O 3 sensor exhibited higher sensitivity, selectivity, and faster response/recovery times compared to the crystalline Fe 2 O 3 sensor. These findings suggest that amorphous Fe 2 O 3 could be a promising material for developing highly sensitive, selective, and energy-efficient TEA gas sensors.
研究领域:
材料科学
·
化学传感器
·
纳米技术
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Zhenyi Zhu,Dan Li,Jirui Lin,Bowen Lv,Litian Wang,Cuiping Li
Facile strategies for regulating the microstructure and surface chemistry of metal oxide semiconductors are essential for advancing gas sensing technologies. Metal–organic frameworks (MOFs) with well-defined structures serve as ideal sacrificial templates for designing high-performance metal oxide gas sensors. In this work, a series of α-Fe 2 O 3 materials with tunable nanostructures were successfully synthesized via the calcination of NH 2 -MIL-88B(Fe) precursors, where the FeCl 3 /Fe(NO 3 ) 3 molar ratio was systematically varied. The influence of the dual‑iron‑source composition on the morphology, structure, and gas‑sensing properties of the resulting α-Fe 2 O 3 samples (denoted as CN x , x = 1–5) was systematically investigated. The results demonstrate that the CN3 sensor exhibits a significantly higher response (27.9) to 100 ppm acetone at 260 °C compared to the other samples. Moreover, the CN3 sensor shows a low detection limit, excellent selectivity, satisfactory repeatability, and long-term stability. The enhanced acetone-sensing performance is mainly associated with the synergistic effects of a well-interconnected three-dimensional porous network and abundant oxygen vacancies, which together facilitate gas diffusion, promote oxygen adsorption and surface reactions, and improve the effective utilization of active sites. This study provides a feasible precursor-engineering strategy for fabricating advanced α-Fe 2 O 3 ‑based gas sensors and highlights their potential for non-invasive diabetes monitoring through breath acetone detection.
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 8
·2423-2431
·
IF 2.43
Zhang Yucheng,Shi Yongfeng,Su Xiaotong,Tam Nora F. Y.,Lei Huifang,Chen Zihui,Wu Qihang
Aggregation is a key process for determining the environmental behavior and impact of a nanoparticle (NP). Since organophosphate esters (OPEs), which are recognized as emerging contaminants, are distributed widely in the natural aquatic environment, they may contribute to interacting with NPs and ultimately influence their transport and fate. Here, we investigated two typical organophosphate esters OPEs on aggregation the Fe 2 O 3 NP in aquatic environments. The results showed that both tri-ethylhexyl phosphate (TEHP) and tris (chloroisopropyl) phosphate (TCPP) improved the colloidal stability of Fe 2 O 3 NP in artificial water and environmental matrices. TEHP exhibited an obvious effect than TCPP on the Zeta potential and aggregation rates of Fe 2 O 3 NP in artificial water. In the presence of electrolyte, 10 mg/L TCPP and TEHP increased the critical coagulation concentration (CCC) by 3.6 times and 17.4 times, respectively. Compared with pore-water, the aggregation rates of Fe 2 O 3 NP in river water were slightly higher than those in pore-water, which can be attributed to the higher DOC in pore-water. We suggested that the high hydrophobicity and molecular weight of OPEs were considered important factors against the aggregation of Fe 2 O 3 NP in water. Greater surface charge and steric hindrance originating from TCPP and TEHP dominated the colloidal stability of Fe 2 O 3 NP. TCPP/TEHP improve the colloidal stability of Fe 2 O 3 NP. Hydrophobicity and molecular weight of OPEs have a distinct effect on Fe 2 O 3 NP agglomeration. Electrostatic repulsions and steric stabilization control colloidal stability.
✓ 已验证
DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2011
·Vol. 323
·期 23
·3087-3091
·
IF 1.69
L.D. Zhang,W.L. Liu,C.L. Xiao,J.S. Yao,Z.P. Fan,X.L. Sun,X. Zhang,L. Wang,X.Q. Wang
The use of a block copolymer , poly (styrene)-b-poly (acrylic acid) (PS-b-PAA) to prepare a magnetic nanocomposite was investigated. Poly (styrene)-poly ( t -butyl acrylate) block copolymer , being synthesized by atom transfer radical polymerization , was hydrolyzed with hydrochloric acid for obtaining PS-b-PAA. The obtained PS-b-PAA was then compounded with the modified γ-Fe 2 O 3 , and subsequently the magnetic nanocomposite was achieved. The products were characterized by 1 H NMR, FTIR , gel permeation chromatography , thermogravimetric analysis , transmission electron microscopy and vibrating sample magnetometer . The results showed that the nanocomposites exhibited soft magnetism , with the mean diameter of 100 nm approximately.
研究领域:
材料科学
·
高分子化学
·
纳米复合材料
·
磁性材料
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Jiashun Liang,Kaili Liang,Lifeng Li,Yuqi Cao,Xiong Cao
This paper investigates the effect of Fe 2 O 3 nanosheets as catalysts on the catalytic decomposition performance of DAP-4. Our laboratory has successfully fabricated Fe 2 O 3 nanosheets and DAP-4. The morphology and composition of DAP-4 and Fe 2 O 3 nanosheets were investigated using SEM, XRD and XPS. The catalytic decomposition performance of DAP-4 and DAP-4/Fe 2 O 3 nanosheets mixture samples were characterized by DSC. The results show that the synthesized Fe 2 O 3 nanosheets can reduce the activation energy of DAP-4, Fe 2 O 3 nanosheets have good catalytic activity. And calculate the relevant kinetic parameters for the mixed samples using the Kissinger equation.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yuwei He,Chong Li,Zhen Lin,Qiugen Zhang
Hollow fiber membranes (HFMs) have been widely used in ultrafiltration. However, current HFMs usually exhibit low permeance to ensure satisfactory retention performances. Blending nanomaterials into HFMs matrix can enhance permeance but still can be improved. Herein, we report a facile strategy to fabricate highly-permeable HFMs using inorganic metal oxide nanoparticles as sacrificed templates. Ultrathin Fe 2 O 3 nanosheets are synthesized via hydrothermal method. After blending with minuscule concentrations (0.4 % mass fraction) of the nanosheets, spinning and acid dissolving, HFMs are fabricated with nanosheet-templated channels. These HFMs have enhanced porosity (from 49.7 % to 86.9 %), pore size (from 12.5 nm to 27.5 nm), roughness (from 16.0 nm to 29.3 nm), hydrophilicity (water contact angle from 93.7° to 77.8°), mechanical properties (tensile strength from 3.0 MPa to 4.2 MPa), and antifouling ability (flux recovery ratio from 0.58 to 0.71). The permeance can be increased significantly to 209.2 L m −2 h −1 bar −1 , a 10.6-fold improvement compared to the unblended HFMs. The solute rejection of the HFMs is not compromised (e.g., maintaining 10 nm Au at 96.3 % and bovine serum albumin at 86.2 %) due to the small size of templated channels. The sacrificed template blending strategy can be applied to other inorganic metal nanoparticles and various polymer-based HFMs. This work can also provide great inspiration for flexibly designing and conveniently fabricating highly-permeable HFMs in industrial ultrafiltration.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Zi-Han Zhang,Tao Yang,Ze-Yuan Wang,Hai-Chao Wang,Xin-Zheng Yue,Sha-Sha Yi
The photoelectrochemical (PEC) performance of hematite ( α -Fe 2 O 3 )-based photoanodes is still far from its theoretical value because they are constrained by serious charge recombination and sluggish water oxidation kinetics. Herein, we developed a heterostructural photoanode by coating boron doped graphite carbon nitride nanolayers onto an Fe 2 O 3 nanoarray (BCN/Fe 2 O 3 ), followed by modification with NiCo(OH) x cocatalyst. The constructed NiCo(OH) x /BCN/Fe 2 O 3 demonstrates a significantly improved photocurrent density of 2.7 mA cm −2 at 1.23 V RHE (V versus reversible hydrogen electrode), which is 3.2 times higher than that of pristine Fe 2 O 3 . Additionally, it exhibits an extremely negative onset potential of 0.60 V RHE . Detailed studies reveal that the BCN/Fe 2 O 3 heterojunction endows a driving force for charge separation and establishes a direct pathway for their transport, while NiCo(OH) x acts as a cocatalyst to accelerate the surface water oxidation reaction.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2016
·
IF 3.205
Yuangang Li,Juan Feng,Huajing Li,Xiaoliang Wei,Rongrong Wang,Anning Zhou
Solar splitting of seawater is one of the promising ways for large scale utilization of solar energy in the future. Here we reported an efficient and stable photoanode based on earth-abundant materials for photoelectrochemical (PEC) splitting of natural seawater. Through simple hydrothermal growth and deposition-annealing (DA) process, α-Fe 2 O 3 /WO 3 nanorod arrays were grown on the surface of fluorine-doped tin oxide coated glass. The PEC performance can be optimized simply by varying DA cycles. The photocurrent density reaches about 1 mA/cm 2 at 1.23 V vs RHE under the illumination of 100 mW/cm 2 (AM 1.5G) which is 2.9 times as that of pure WO 3 films and 50 times as that of the pristine Fe 2 O 3 NRs under the same conditions. More importantly, when the materials were used as photoanode for PEC splitting of natural seawater, the performance was kept as well. After 5 h continuous illumination 65% of the initial value of photocurrent density still remained, which imply the good photostability of the materials even at the conditions of PEC splitting of seawater. A possible mechanism for the improved performance of the hybrid photoanode was proposed based on our experimental results.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）