Energy Storage Materials
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2025
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IF 20.2
Gaige Zhang,Changchun Ye,Tan Li,Shumin Liu,Wei-Hsiang Huang,Zhaoxi Chen,Xiaochao Ren,Jiajin Lin,Jin Yang,Yongcai Qiu,Guangxu Chen
Repurposing spent battery materials into electrocatalysts offers a dual-functional strategy to mitigate environmental burdens and create value-added products. However, developing efficient conversion methods to transform spent cathodes into high-activity, cost-effective catalysts remains a critical challenge. Here, we report a Fe-doped LCO/Co 3 O 4 heterogeneous interface catalyst (Fe-LCO/Co 3 O 4 ) synthesized by quenching the calcinated spent LiCoO 2 (SLCO) in the Fe 3+ solution for promoting the performance of the oxygen evolution reaction (OER). Fe-LCO/Co 3 O 4 features outstanding OER activity, including a low overpotential of 312 mV at 10 mA cm −2 , a Tafel slope of 34 mV dec −1 , and remarkable stability exceeding 1000 h, better than the majority of cobalt-based electrocatalysts. Experimental results and density functional theory reveal that Fe ions coupled with LCO/Co 3 O 4 heterostructures alter the adsorption configuration of *OH and *O, optimizing binding capabilities and effectively reducing the rate-determining step of *OOH dehydrogenation energy barrier, thereby accelerating the OER. This study introduces a novel strategy for the sustainable reuse of spent cathode materials, providing insights into the rational design of high-performance OER electrocatalysts.
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高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 16
·2208800
·
IF 29.4
Tianyang Wang,Xuan Luo,Jingjing Gao,Zhongzhu Jiang,Wei Wang,Xingcai Yang,Nan Zhou,Xiaoguang Zhu,Lei Zhang,Wenjian Lu,Wenhai Song,Hongyan Lv,Yuping Sun
Weyl semimetal T d -MoTe 2 has recently attracted much attention due to its intriguing electronic properties and potential applications in spintronics. Here, Fe-intercalated T d -Fe x MoTe 2 single crystals (0 < x < 0.15 ) are grown successfully. The electrical and thermoelectric transport results consistently demonstrate that the phase transition temperature T S is gradually suppressed with increasing x . Theoretical calculation suggests that the increased energy of the T d phase, enhanced transition barrier, and more occupied bands in 1T′ phase is responsible for the suppression in T S . In addition, a ρ α –ln T behavior induced by Kondo effect is observed with x ≥ 0.08, due to the coupling between conduction carriers and the local magnetic moments of intercalated Fe atoms. For T d -Fe 0.15 MoTe 2 , a spin-glass transition occurs at ≈10 K. The calculated band structure of T d -Fe 0.25 MoTe 2 shows that two flat bands exist near the Fermi level, which are mainly contributed by the d yz and d x 2 − y 2 ${{\rm{d}}_{{x^2} - {y^2}}}$ orbitals of the Fe atoms. Finally, the electronic phase diagram of T d -Fe x MoTe 2 is established for the first time. This work provides a new route to control the structural instability and explore exotic electronic states for transition-metal dichalcogenides.
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ENVIRONMENTAL RESEARCH
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2025
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IF 7.7
Ruize Jia,Ronghao Man,Liannan Shang
The rapid development of mineral resources exploitation and industries has brought a large amount of wastewater containing cadmium (Cd) and arsenic (As) to the environment. Among these, the mining industry has become a major challenge in wastewater treatment due to the coexistence of both pollutants at high concentrations. Developing a sustainable and low-cost adsorbent capable of simultaneously adsorbing both anionic and cationic pollutants is a key breakthrough direction for solving this practical problem. In this study, chitosan-grafted Fe-pillared bentonite (CS@Fe@Bt) was synthesized using natural bentonite, aiming to provide an efficient material for treating Cd and As co-contaminated wastewater (especially mining industry wastewater). Results suggested that the specific surface area (SSA) and total pore volume of Fe-pillared bentonite increased by 1.85 and 1.32 times, respectively, compared with the raw bentonite. Pillaring the bentonite also significantly enhanced its chitosan loading capacity, improving both the structural stability and adsorption performance of CS@Fe@Bt. Kinetic and isothermal adsorption experiments revealed that CS@Fe@Bt possessed a multilayer heterogeneous surface, with Cd and As adsorption following the Pseudo-second-order kinetic model. CS@Fe@Bt showed strong adsorption capacity for both Cd(II) and As(III) when the initial pH i of the solution ranged from 6 to 8. The maximum adsorption capacities ( Q m ) for Cd(II) and As(III) were 80.79 mg·g -1 and 34.90 mg·g -1 , respectively, surpassing most comparable adsorbents. The primary adsorption mechanisms of CS@Fe@Bt in Cd(II) and As(III) co-polluted water included oxidation (57.81% of As(III) was converted to low-toxicity As(V)), electrostatic interactions, and the formation of B-type ternary surface complexes (CS@Fe@Bt-As-Cd). Additional mechanisms included ion exchange, pore adsorption. These findings highlight the potential of CS@Fe@Bt as an effective adsorbent for Cd(II) and As(III) adsorption, providing technical support for addressing practical wastewater treatment challenges.
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PubMed
高影响因子
Small
·
2025
·
IF 12.1
Haixin Sun,Xupeng Qin,Yuhao Zhang,Yanzhi Xu,Yaling Jiang,Fengwen Pan,Qinghua Liu
Coordination reconstruction of atomically dispersed active sites in electrocatalytic reactions is expected to enhance the catalytic activity, but achieving this goal remains challenging. Herein, a single-atom‒nanoparticle synergistic catalyst composed of pyridine Fe─N sites and Ni nanoparticles (NPs) encapsulated in nitrogen-doped carbon nanotubes is presented, in which the Ni NPs can reconstruct the Fe─N─C coordination structure from Fe─N 4 to Fe─N 2 through the carbon nanotube structure during the CO 2 electroreduction reaction. The catalyst exhibites a low onset potential of −0.12 V in an alkaline flow cell, with a high Faradaic efficiency for CO (FE CO ) greater than 97% over a wide potential range of −0.4–−1.2 V and a maximum FE CO of 98.7%. In situ X-ray absorption spectroscopy and infrared characterization results demonstrate that the reduction in the Fe─N coordination number during the reaction process promotes the protonation of CO 2 to form the * COOH intermediate and thereby significantly improves the CO 2 electroreduction performance.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Jie Cao,Jin Huang,Huaping Dong,Jianfa Li,Jianxin Shou,Yimin Li
Surfactants are easily accumulated in groundwater, sediment, and aquifers, due to their excessive use in household, industrial, and agricultural processes. These residual surfactants are expected to influence the transformation and fate of organic contaminants by Fe(II) sorbed on iron oxides in anaerobic environments. Here, we investigated the effects of various surfactants including nonionic TX-100, anionic SDBS and bio-surfactant saponin on the removal of nitrobenzene (NB) by Fe(II) sorbed on goethite (goethite/Fe(II)) through batch experiments. We also elucidated the mechanism behind the effects by XPS, XRD , and determination of the amounts of sorbed Fe(II) on goethite. The results showed that the presence of TX-100 improved NB removal from 77.2% in the absence of surfactant, to 93.8% within 6 h, and improved the removal rate by about 1.3 times. In contrast, the presence of SDBS decreased the removal efficiency to 45.5%, and the presence of saponin nearly inhibited the removal of NB completely. The removed NB was finally nearly reduced to aniline in the absence or presence of surfactants, except in the case of saponin. The amounts of sorbed Fe(II) listed in the sequence as goethite/Fe(II)+TX-100 > goethite/Fe(II) > goethite/Fe(II)+SDBS > goethite/Fe(II)+saponin, and this order negatively correlated with that in the redox potential of these systems. These results confirmed that the presence of surfactants influenced the sorption of Fe(II) on goethite and changed the reactivity of goethite/Fe(II) for NB removal. This finding will promote a clear understanding of the impact of coexisting surfactants on the transformation and fate of organic contaminants in real anaerobic environments.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Zhenqiang Yu,Menglian Zhang,Rong Guo,Jinming Zeng,Zheng Xie,Yihao Xu,Yi Fang,Xiaopeng Qi,Zhe Lü,Huan Li
Designing and developing highly active and stable cathode materials is of great concern to large-scale commercial applications of solid oxide fuel cells (SOFCs). Herein, a series of perovskite oxides, La 0.5 Ba 0.5 Fe 1-x Zr x O 3-δ (LBFZ x O, x = 0∼0.075), are synthesized and systematically assessed. All LBFZ x O samples present cubic perovskite structure and possess better chemical compatibility with the SDC electrolyte. The introduction of Zirconium into the parent material yields lower thermal expansion coefficient and higher oxygen vacancy. Among all the components, La 0.5 Ba 0.5 Fe 0.95 Zr 0.05 O 3-δ achieves the lowest polarization resistant (0.076 Ω cm 2 ) and the highest power density (523 mWcm −2 ) at 800 °C, while rendering exceptional stability over a duration of 100 h. In addition, combining with the analyses of impedance and the distribution of relaxation times, the rate-determining steps for the entire oxygen reduction process are further clarified. The current research results highlight that La 0.5 Ba 0.5 Fe 0.95 Zr 0.05 O 3-δ is a viable cathode candidate for SOFCs.
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高影响因子
Advanced Materials Interfaces
·
2025
·
IF 4.4
Zhexin Pan,Yiming Zhu,Yihong Liu,Wei-Hsiang Huang,Yujie Cui,Yang Zhao,Menghao Yang,Hongfei Cheng,Nicolas Alonso-Vante,Jiwei Ma
The development of platinum group metal (PGM)-free catalysts is essential to advance the wide application of fuel cells. Single-atom Fe─N─C catalysts are one type of promising PGM-free catalysts that can replace the expensive Pt/C catalyst for the electrocatalytic oxygen reduction reaction. However, Fe─N─C catalysts still suffer from poor stability due to the inevitable Fenton reaction. In this work, a doping strategy is demonstrated to alter the electronic structure around the catalytic sites and significantly improve their catalytic activity. In particular, the phosphorous-doped Fe─N─C catalyst (P─Fe─N─C) achieves a half-wave potential of 0.885 V versus RHE in 0.1 m KOH and demonstrates excellent stability, with only a 7 mV decay in the half-wave potential after 10 000 cyclic voltammetry cycles, superior to that of boron-doped one (B─Fe─N─C). Density functional theory (DFT) calculations further confirm that heteroatom doping favors the ORR process, highlighting the potential of this catalyst for advanced energy applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Dongju Liu,Kunlan Diao,Daohai Zhang,Yupeng Hu,Zhi Lei,Teng Zhou,Kaixiang Zou,Shuhao Qin
With the popularity of wireless communication technology, the problem of electromagnetic radiation and interference is highlighted, and the development of efficient electromagnetic shielding materials has become a research priority. In this study, firstly, polyvinyl alcohol/sodium alginate (PVA/SA) hydrogels were prepared by physical cross-linking method, and further, iron-based metal-organic frameworks (Fe-MOFs) were prepared by solvothermal synthesis method, and with reduced graphene oxide (RGO) as a conductive filler, and γ-aminopropyltriethoxysilane (KH550) as a cross-linking agent, were prepared by chemical cross-linking method. Modified polyvinyl alcohol/sodium alginate/iron based metal organic framework/reduced graphene oxide (PVA/SA/Fe-MOF/RGO-KH550) composite hydrogel. The results show that the composite hydrogel has a compressive stress of 20.13 MPa, a compressive strain of 83.28 %, and an electromagnetic shielding efficiency of 39.98 dB at a thickness of 3 mm, which reaches the mid-range and high-end level, and it can be applied to industrial control, small and medium-sized data centres, automotive electronics, and general medical devices with medium-high requirements. The excellent performance of the hydrogel comes from the conductive properties and interfacial polarisation effect of RGO, the dielectric loss of Fe-MOF, which work in synergy, and KH550 optimises the interfacial bonding between the filler and the substrate to form a denser crosslinked structure, which strengthens the mechanical properties and electromagnetic shielding effect. The hydrogel preparation process is simple and low-cost, which provides a reference for the design of high-performance electromagnetic shieldingmaterials and an effective solution to the problem of electromagnetic interference.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Rongrong Yu,Jingjing Wang,Xinyu Zhi,Danyi Yang,Yongqi Zhao,Guifeng Chen,Chengchun Tang,Yi Fang
With growing concerns about antibiotic contamination in water environments, developing efficient photocatalysts for tetracycline (TC) degradation has become imperative. In this study, a novel nanoflower-like BiOI/UiO-66(Ce/Fe) S-scheme heterojunction photocatalyst was developed for efficient TC degradation under visible light. Experimental evaluations revealed that the optimized 0.05-Bi/U(Ce/Fe) sample achieved 99.5 % TC degradation efficiency, maintaining 88.8 % of its initial activity after four consecutive cycles. The superior photocatalytic activity arises from three synergistic mechanisms: Fe 3+ doping modulates the band structure to broaden visible-light absorption, while the synergistic effect of Ce 4+ /Ce 3+ and Fe 3+ /Fe 2+ redox pairs optimizes charge transport. The internal electric field at the BiOI/UiO-66(Ce/Fe) heterojunction enhances charge separation while maximizing the redox capacity of the photocatalyst. Radical capture experiments and LC-MS analysis confirmed ·O 2 − and ·OH as the dominant reactive radicals, with proposed possible degradation pathways. Thus, a new synergistic strategy for designing efficient photocatalysts is proposed in this work.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wei Deng,Hai Zhang,Yingzheng Yin,Congwen Liu,Qing Liu,Jiajun Fang,Yushi Xie,Xiaoling Xu,Zuowan Zhou
Low-voltage electroporation offers a sustainable and energy-efficient approach for water disinfection. However, this technique faces significant challenges, including inefficient charge transport and inadequate stability of nanoarray-modified electrodes, which undermine both disinfection performance and system stability. In this study, we overcame these challenges by introducing iron-doped zinc oxide nanoarrays (Fe-ZnO NAs) and integrating them into a novel Non-contact Electrode System (NES). The Fe-ZnO NAs exhibited an enhanced conductivity due to the iron doping, which greatly improved their electroporation disinfection performance. At a low voltage of 1 V and a short contact time of 0.6 s, 3 wt% iron-doped ZnO nanoarrays (Fe3-ZnO NAs) electrodes achieved remarkable bacterial removal efficiencies of 6.20-log for Escherichia coli ( E. coli ) and 1.69-log for Staphylococcus aureus ( S. aureus ), compared with only 1.94-log and less than 0.10-log, respectively, for the undoped ZnO NAs electrodes. Furthermore, the Fe3-ZnO NAs electrodes demonstrated excellent operational stability, maintaining over 6.00-log removal efficiency for E. coli during 30 min of continuous operation. These results establish the transformative potential of Fe-ZnO NAs as a high-performance, low-energy electrode material, offering a practical and efficient solution for water disinfection in real-world applications.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Fengli Yang,Yi Su,Guangpin Lin,Jiawang Liu,Feifei Xia,Guobin Liang,Wei Lin,Huabing Zhang
Photocatalytic nitrogen fixation presents a promising alternative to the traditional Haber-Bosch process. In this study, Fe/Br co-doped bismuth molybdate (Fe/Br-BMO) was synthesized for the photocatalytic production of ammonia, achieving a production rate of 156.7 µmol g −1 h −1 . Characterization of the catalyst reveals that Fe/Br co-doping not only modifies the energy band structure and electronic properties of the catalyst but also expands the light absorption spectrum, inhibits the rapid recombination of photogenerated charge carriers, and increases both the specific surface area and the number of oxygen vacancies within the catalyst, which promote N 2 adsorption and activation and a significant reduction in the free energy of the rate-limiting step. These improvements effectively facilitate the adsorption and activation of N 2 molecules, lower the Gibbs free energy associated with the rate-limiting step, and ultimately enhance the photocatalytic activity
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2019
·Vol. 91
·期 1
·54-62
·
IF 1.986
Deng Senlin,Zhang Xubin,Lv Guojun,Zhai Yi,Yang Zebin,Zhu Yongqiang,Li Haichao,Wang Fumin
Fe-doped zeolites with Mobil Five (MFI) structure have been widely used as heterogeneous Fenton catalysts to eliminate dyes from wastewater. However, the influence of carriers on degradation efficiency has not been reported yet. In this work, we have prepared three Fe-doped zeolite catalysts, FeS-1, FeZSM-5, and FeTS-1, with silicalite-1 (S-1), zeolite socony mobil-5 (ZSM-5), and titanium silicalite-1 (TS-1) as carriers, respectively. Characterizations, such as X-ray diffraction (XRD), scanning electron microscopy, energy-disperse X-ray spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflection spectroscopy (UV–Vis DRS), X-ray fluorescence spectrometer, zeta potential, and N 2 adsorption/desorption isotherms, were used to investigate the morphologies and physicochemical properties of the synthesized materials. The catalytic performances of all zeolite catalysts were evaluated in the degradation experiments. The results depicted that the degradation efficiency of FeZSM-5 was higher than that of FeS-1 and FeTS-1 owing to its higher hydrophilic property, larger external specific surface area, and more negative zeta potential value. Therefore, the ZSM-5 could be a more suitable solid matrix for heterogeneous Fenton reactions than S-1 and TS-1.
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