JOURNAL OF ALLOYS AND COMPOUNDS
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2024
·
IF 5.8
Hongyuan Song,Yijia Pang,Linjie Dong,Kun Dong,Haorong Wu,Liangwei Chen,Bin Liu,Zhenhua Ge,Lan Yu
Transition metal oxides are considered ideal electrocatalyst materials due to their low cost and high intrinsic activity. Among them, SrCoO 3- δ has received increasing attention due to its multi-phase structure and tunable electronic properties, though its OER reaction kinetics and catalysis stability are unsatisfactory. Herein, based on a simple one-step solid-state reaction method, we use a small amount of rare earth Y ions (10 %) to transform H-SCO 2.52 from a hexagonal structure to a stable cubic perovskite Sr 0.9 Y 0.1 CoO 3− δ . While broadening the atomic ratio of Co and Fe in the B-site under the cubic perovskite Sr 0.9 Y 0.1 Co 1- x Fe x O 3− δ ( x = 0–1), the relationship between the B-site electronic state, oxygen vacancies, and OER performance has been explored. Sr 0.9 Y 0.1 Co 0.2 Fe 0.8 O 3− δ with a high concentration of oxygen vacancies, exhibits the lowest overpotential of 277 mV and maintains stability at 10 mA cm −2 for 88 h. The valence states of Fe and Co atoms in SYC0.2F0.8 O are optimized (Fe 2+ ∼50.81 %, Co 2+ ∼19.39 %), and the oxygen evolution activity is enhanced by electrochemical reconfiguration to form high-valence Fe and Co ions. Selective leaching of Sr ions via electrochemical surface reconstruction activates FeOOH and CoOOH amorphous layer active sites on the catalyst surface, significantly enhancing reaction kinetics.
研究领域:
材料科学
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电化学
·
催化
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高影响因子
Tungsten
·
2025
·
IF 11.2
Wang Xue,Zhang Li,Han Yu,Li Feng-Bo,Li Shao-Bin
Accurate non-invasive glucose monitoring is crucial for health diagnostics. However, the development of high-performance non-enzymatic electrochemical sensors for this application remains a significant challenge. To address this issue, a novel material, FeOOH encapsulated within zeolitic imidazolate framework-67 (ZIF-67)-derived copper-cobalt-layered double hydroxide (FeOOH@CuCo-LDH), was developed through a vapor-assisted deprotonation process for FeOOH encapsulation, followed by a hydrothermal reaction to synthesize the hollow composite. The synergistic interactions between the multi-metallic composition and the hollow structure significantly enhance glucose oxidation-reduction reactions. This enables the sensor to achieve a wide linear detection range (0.5–722 μmol·L −1 and 722–4222 μmol·L −1 ), high sensitivity (4.05 and 1.43 μA·L·μmol −1 ·cm −2 ), and a low limit of detection (0.83 μmol·L −1 ). The sensor demonstrated excellent performance in practical applications, accurately detecting glucose in saliva under physiological conditions. This study highlights the potential of FeOOH@CuCo-LDH as an excellent electrode material for non-enzymatic electrochemical glucose sensing, offering promising applications in diabetes prevention and diagnosis. Graphical abstract
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高影响因子
Water
·
2024
·Vol. 16
·期 13
·1795
·
IF 3
Mengxue Li,Lanbao Zhu,Jing Wang,Li Ma,Zhengwei Pan,Wenwei Ji,Xiaoyu Sun,Ruping Li,Xia Li,Shilong Duan,Yule Tao
Mn-substituted FeOOH with different Mn/(Mn + Fe) molar ratios are synthesized, and characterized using FESEM, XRD, FTIR, ICP-OES, BET, Zeta potential, TG-DSC, XPS, and VSM. The results show that the actual doping amounts of Mn are 0%, 3.05%, 6.13%, 9.04%, 12.70%, and 15.14%, respectively. The substitution of Mn promotes the transformation of goethite from FeOOH to MnFe2O4, resulting in a saturation magnetization intensity of up to 14.90 emu/g for G-Mn15%, laying a theoretical foundation for magnetic recovery. The specific surface area of Mn-substituted FeOOH increases from 57.15 m2/g to 315.26 m2/g with an increasing Mn substitution amount. Combined with the abundant oxygen-containing functional groups such as -OH, Fe-O, and Mn-O on the surface, sufficient active sites are provided for the efficient adsorption of U(VI). The TG-DSC analysis results indicate that the substitution of Mn improves the thermal stability of goethite. In addition, XPS analysis results indicate that the substitution of Mn leads to the conversion of Fe3+to Fe2+in goethite, and the conversion of Mn2+to Mn3+replaces Fe3+in the structure of goethite. Fe-O and Mn-O coordinate participate in the adsorption and reduction process of U(VI). The batch experiment results show that the substitution of Mn promotes the adsorption performance of goethite for U(VI). When T = 303 K, pH = 4.0, m/V = 0.5 g/L, and I = 0.01 mol/L NaCl, the maximum adsorption capacity of G-Mn15% for U(VI) is 79.24 mg/g, indicating the potential value of Mn substitution for goethite in the treatment of uranium-containing wastewater.
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
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Siqi Huang,Qun Zhang,Pengyu Liu,Shengjia Ma,Bing Xie,Kai Yang,Yaping Zhao
In this study, novel up-converted carbon quantum dots (CQD) incorporated goethite (α-FeOOH) nanohybrids (CQDs/α-FeOOH) were fabricated via a facile hydrolysis method. CQDs/α-FeOOH exhibited remarkably degradation efficiency towards tetracycline (TC, 0.1503 min -1 ), approximately 3.7 times than pristine α-FeOOH with much lower amount of H 2 O 2 (0.5 mM) under visible light irradiation (λ＞420 nm). The quenching and electron spin resonance (ESR) tests proved · OH, O 2 · - and 1 O 2 were involved in TC degradation in CQDs/α-FeOOH catalyzed Fenton system. The potential Ultraviolet-Visible-Infrared (UV–vis-IR) broad-spectrum responsive properties of CQDs/α-FeOOH were proved in degradation various surface charged organic contaminants regarding the function of coupling up-conversion CQDs. CQDs/α-FeOOH also exhibited wide application pH, excellent durability, fairly good catalytic performance within different practical water matrices and completely eliminated related drug resistance of TC even under real solar-light conditions. The good biocompatibility makes CQDs/α-FeOOH served as a promising photocatalyst for remediation of water contamination with efficient utilization of solar energy.
研究领域:
环境科学
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材料科学
·
生物学
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高影响因子
Food Frontiers
·
2023
·Vol. 4
·期 4
·1913-1926
·
IF 9.9
Chun-Yang Li,Lu Yang,Yingshuang Lu,Man-Man Wang,Jing-Min Liu,Shuo Wang
Photocatalysis-based advanced oxidation technologies have been developed as an attractive strategy for degrading pollutants. However, the question of how to increase removal specificity without sacrificing the degradation effect remains a difficult one. In this work, a photocatalytic system for the simultaneous targeted elimination of nine heterocyclic amines (HCAs) is established using a green-prepared photocatalyst (CN@Mn–FeOOH@MIP) that activates sodium persulfate (PS) under visible light. Mn–FeOOH clusters are in situ covered on laminar g-C 3 N 4 (CN) carrier to form a heterojunction, along with a molecularly imprinted layer self-polymerized from dopamine, which is grown on the outer layer, resulting in both the desired photochemical activity and specific sites for recognition. The conditions of composite and photocatalysis are explored and optimized for efficient and selective degradation. Notably, CN@Mn–FeOOH@MIP is synthesized free of any organic reagents, and the biosafety is confirmed by cellular and in vivo toxicity evaluation. The developed CN@Mn–FeOOH@MIP/PS system with visible-light-driven is applied to the removal of HCAs in coffee samples with the recoveries over 70% and the reuse rates greater than 85%. It coupled the advantages of specific enrichment and rapid degradation, which furnishes a novel approach for the control of trace thermal processing pollutants.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 23
·64547-64564
·
IF 5.8
Yang Ling,Han Fuhu,Muhammad Yaseen,Liu Yu,Zhao Zhenxia,Kong Hao,Li Jing,Zhang Honggang
Hydrophobic modification of bagasse fibers (BFs) through a green approach can promote its reuse in asphalt and enhance the utilization value of agricultural and forestry waste in road engineering. In contrast to traditional chemical modification, this study reports a new method for the hydrophobic modification of BFs using tannic acid (TA) and the in situ growth of FeOOH nanoparticles (NPs), resulting in FeOOH-TA-BF, which is used to prepare styrene–butadiene styrene (SBS)–modified asphalt. The experimental results show that the surface roughness, specific surface area, thermal stability, and hydrophobicity of the modified BF are improved, which is beneficial for enhancing the interface compatibility with asphalt. Specifically, compared with BF/SBS-modified asphalt, FeOOH-TA-BF/SBS-modified asphalt exhibits 39.21% and 23.26% increase in the elastic modulus G′ and viscous modulus G″, respectively, at the optimal dosage of 2.5%, corresponding to 6.15-fold and 7.13-fold increase in the fatigue life at 2.5% and 5.0% strain respectively, and 22.0% improvement in shear resistance performance. In the meantime, 2.5-fold enhancement of the storage stability. Therefore, this study provides a simple, environmentally friendly, and efficient hydrophobic modification method that is of great significance for promoting the resource utilization of solid waste BF. Graphical Abstract
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PubMed
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 1
·103
·
IF 5.4
Xu Li,Jiali Huang,Jiayu Ding,Mingzhen Xiu,Kang Huang,Kang Cui,Jing Zhang,Shiji Hao,Yan Zhang,Jinghua Yu,Yizhong Huang
A dual-mode lab-on-paper device based on BiVO4/FeOOH nanocomposites as an efficient generating photoelectrochemical (PEC)/colorimetric signal reporter has been successfully constructed by integration of the lab-on-paper sensing platform and PEC/colorimetric detection technologies for sensitive detection of carcinoembryonic antigen (CEA). Concretely, the BiVO4/FeOOH nanocomposites were in situ synthesized onto the paper-working electrode (PWE) through hydrothermal synthesis of the BiVO4layer on cellulose fibers (paper-based BiVO4) which were initially modified by Au nanoparticles for improving the conductivity of three dimensional PWE, and then the photo-electrodeposition of FeOOH onto the paper-based BiVO4to construct the paper-based BiVO4/FeOOH for the portable dual-mode lab-on-paper device. The obtained nanocomposites with an FeOOH needle-like structure deposited on the BiVO4layer exhibits enhanced PEC response activity due to its effective separation of the electron–hole pair which could further accelerate the PEC conversion efficiency during the sensing process. With the introduction of CEA targets onto the surface of nanocomposite-modified PWE assisted by the interaction with the CEA antibody from a specific recognition property, a signal-off PEC signal state with a remarkable photocurrent response decreasing trend can be achieved, realizing the quantitative detection of CEA with the PEC signal readout mode. By means of a smart origami paper folding, the colorimetric signal readout is achieved by catalyzing 3,3′,5,5′-tetramethylbenzidine (TMB) to generate blue oxidized TMB in the presence of H2O2due to the satisfied enzyme-like catalytic activity of the needle-like structure, FeOOH, thereby achieving the dual-mode signal readout system for the proposed lab-on-paper device. Under the optimal conditions, the PEC and colorimetric signals measurement were effectively carried out, and the corresponding linear ranges were 0.001–200 ng·mL−1and 0.5–100 ng·mL−1separately, with the limit of detection of 0.0008 and 0.013 ng·mL−1for each dual-mode. The prepared lab-on-paper device also presented a successful application in serum samples for the detection of CEA, providing a potential pathway for the sensitive detection of target biomarkers in clinical application.Keywords:PEC;colorimetric;lab-on-paper device;BiVO4/FeOOH;CEA
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 26
·期 3
·2820-2834
·
IF 2.8
Xu Jian,Zhang Xueliang,Sun Cheng,Wan Jinzhong,He Huan,Wang Fei,Dai Yuxuan,Yang Shaogui,Lin Yusuo,Zhan Xinhua
Peanut shell biochar (BC) supported on Cu-doped FeOOH composite (Cu–FeOOH/BC) was synthesized using a facile and scalable method. The Cu–FeOOH/BC samples were characterized by Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), scanning electron microscopy equipped with an energy-dispersive spectrometer (SEM-EDS), x-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) techniques. Novel catalytic composites with different Cu/Fe molar ratios were compared systematically by activating persulfate (PS) for the tetracycline (TC) degradation. 0.5Cu–1FeOOH/BC (Cu/Fe molar ratio = 0.5:1) was confirmed as the optimum activation material and the removal of TC reached 98.0% after 120 min by combining with 20 mM PS at pH 7.0 and 25 °C. The influencing factors including catalyst loading, PS dosage, water matrix species, and pH on the performance system of 0.5Cu–1FeOOH/BC-PS were investigated, respectively. Reaction rate constants ( K obs ) on catalyst dosages (0.05, 0.10, 0.20, and 0.30 g L −1 ) were 0.0072, 0.0101, 0.0244, and 0.0144 min −1 , and 0.0090, 0.0146, 0.0244, and 0.0178 min −1 for the change of PS concentrations (5, 10, 20, and 30 mM), which indicated that increasing the concentrations of catalyst and PS appropriately improved TC degradation, but excessive dosages inhibited the reaction process of TC removal. The TC removal rate was inhibited by inorganic anions with the following order of HCO 3 − > Cl − > HPO 4 2− > SO 4 2− > NO 3 − . Free radical quenching and capture experiments under different pH values revealed that sulfate radicals existed predominantly in acidic conditions and hydroxyl radicals in alkaline conditions. The catalyst showed an excellent recyclability and stability and the removal efficiency of TC still remained over 90% after five consecutive uses. To conclude, coupling of 0.5Cu–1FeOOH/BC and PS can be successfully applied as an effective and stable technique for the treatment of refractory organic pollutants in wastewater.
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PubMed
高影响因子
CARBON
·
2021
·
IF 9.594
Xiaocui Wu,Qingshan Zhao,Fang Guo,Guangsen Xia,Xiaojie Tan,Huiyuan Lv,Zhaoxuan Feng,Wenting Wu,Jingtang Zheng,Mingbo Wu
Merging photocatalysis with Fenton-like reaction provides a promising synergetic advanced oxidation technology for water treatment, whereas the rational design of efficient cooperative photo-Fenton system still remains a great challenge. In this study, a ternary α-FeOOH/carbon dots/porous g-C 3 N 4 (α-FeOOH/CDs/p-GCN) composite is developed as visible-light-driven heterogeneous photo-Fenton catalyst for contaminated water remediation. α-FeOOH nanorods are in-situ grown on porous g-C 3 N 4 substrates, among which CDs are intercalated as high-speed electron transmission bridges, simultaneously preventing the photogenerated electron-hole recombination and accelerating the Fe 3+ /Fe 2+ redox cycle. The distinctive heterostructure and synergetic catalytic effect endow α-FeOOH/CDs/p-GCN with superior efficiency, reusability , and universality for recalcitrant pollutant elimination, the reaction rate of which is nearly 13.6, 7.3, 3.4, 1.4, and 5.1 times higher than that of α-FeOOH, bulk g-C 3 N 4 (b-GCN), p-GCN, α-FeOOH/p-GCN, and α-FeOOH/CDs/b-GCN, respectively. The FeOOH/CDs/p-GCN also demonstrates excellent tolerance to realistic environmental matrices including deionized water, sea water, river water, wastewater, and underground water. HO• and •O 2 − radicals are proved to be the predominant contributors in the photo-Fenton system. This work provides an efficient synergetic visible-light-driven photo-Fenton catalyst possessing great potential for practical contaminated water remediation.
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高影响因子
Water
·
2022
·Vol. 14
·期 14
·2260
·
IF 3.53
Md. Nahid Pervez,Shengjia Ma,Siqi Huang,Vincenzo Naddeo,Yaping Zhao
In the current work, novel graphene quantum dots (GQDs)-doped goethite (α-FeOOH) nanocomposites (GQDs/α-FeOOH) were prepared by following a feasible hydrolysis method and applied for ciprofloxacin (CIP) removal. Results showed that the CIP degradation efficiency was significant (93.73%, 0.0566 min−1) in the GQDs/α-FeOOH + H2O2+ Vis system using much lower amounts of H2O2(0.50 mM), which is 3.9 times the α-FeOOH + H2O2+ Vis system. It was found that •OH,O2•−, and1O2were mainly responsible for CIP degradation in the GQDs/α-FeOOH photo-Fenton system. GQDs/α-FeOOH demonstrated broad-spectrum UV–vis-IR responsiveness in the degradation of ciprofloxacin as a function of the doping of GQDs. Additionally, GQDs/α-FeOOH showed outstanding durability (recyclability up to 3 cycles with a lower iron leaking amount, 0.020 mg L−1), a broad range of application pH, and a pretty acceptable catalytic efficacy in a variety of surface water matrices. Overall, GQDs/α-FeOOH have been shown to be an effective photocatalyst for the remediation of emerging contaminants via the workable exploitation of solar energy.Keywords:GQDs;goethite;emerging contaminants;photo-Fenton-like reaction;water pollution
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
Processes
·
2026
·Vol. 14
·期 17
·2708
·
IF 3.4
Xiaoqian Li,Haojie Song,Xiaohua Jia
The sturdy and stable unique polyhedral structure of FeOOH nanoparticles facilitates stress and load transfer, thereby forming a tighter mechanical interlock at the carbon fiber–matrix interface. In this work, the FeOOH nanocrystal layer in situ grown on flexible carbon fiber cloth was rationally designed and fabricated through hydrothermal synthesis. Then, the non-covalent cation–π bond was constructed at the interface between the iron ion-loaded FeOOH nanoparticles and indole-based poly(hexahydrotriazine) (In-PHT). Owing to the collaborative effects of physical anchoring and chemical bonding, the resultant composite exhibited an outstanding tensile strength of 322 MPa, and the friction coefficient significantly decreased by 63% compared with the composites without FeOOH nanoparticles. Moreover, the resultant worn composite showed an excellent self-healing property owing to the introduction of polyethylene wax (PEW) with a low melting point, and the healed friction coefficient remained almost unchanged. Extensive analyses verify that the phase-separated structure and Fe3+–π interactions across multiscale interfaces achieve the combined advantages of wear resistance and durability for recyclable carbon fiber-reinforced poly(hexahydrotriazine) composites (PHT-CFRPs).
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yingxia Wei,Zhangwei Li,Farhat Nosheen,Xueyan Wu,Rui Xue,Xingyun Li,Yan Lv,Jixi Guo,Dianzeng Jia
Direct seawater electrolysis for hydrogen production faces significant challenges, particularly regarding stability due to chlorine corrosion and oxidation. Herein, we present an earth-abundant alkaline seawater oxidation electrocatalyst (CO 3 2− -Co(OH) 2 @FeOOH) capable of sustained electrolysis for 5000 h without a significant attenuation at 1 A cm −2 , achieving 100% oxygen Faradaic efficiency. This multilayer electrode, featuring an amorphous FeOOH coating on crystalline cobalt carbonate hydroxide, not only generates a CoFe (oxy)hydroxide active layer but also effectively inhibits the release of CO 3 2− into the electrolyte during the reconstruction process. The synergistic effect of CO 3 2− and the distinct structure contributes to the catalyst's high activity, selectivity, and corrosion resistance. The constructed Pt/C/NF||CO 3 2− -Co(OH) 2 @FeOOH electrochemical cell achieves seawater electrolysis of 500 mA cm −2 at 1.80 V cell voltage, resulting in a power consumption of only 4.30 (kWh m −3 H 2 ). The voltage of the anion exchange membrane electrolyzer remains stable after 600 h of continuous operation at 500 mA cm −2 . The calculated gasoline-equivalent (GGE) per gallon of H 2 is as low as $0.96. This work emphasizes the synergistic effect of multilayer electrodes and anions. and provides a potential catalyst for commercialization.
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高影响因子
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