Journal of Materials Chemistry C
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2025
·
IF 5.1
Yongkang Zhu,Bin Li,Chenxu Li,Shouqin Tian
Recently, tungsten oxides have attracted extensive attention in the field of photochromic smart windows due to the naturally ultraviolet response, high luminous transmittance (Tlum), and substantial solar light modulation (ΔTsol). To promote its applications, limitations such as slow bleaching speed and poor reversibility need to be addressed urgently. Here, we proposed a Fe3+-doping mediated rapid electron transfer strategy to improve the overall photochromic performance of W18O49. By increasing the Fe3+ doping concentration, the bleaching speed of W18O49 films was significantly improved. Notably, films doped with 6 at% and 8 at% Fe3+ could be fully bleached within 5 min, with bleaching rates twice that of undoped films. This improvement is attributed to Fe3+ doping, which creates more oxygen vacancies in W18O49, facilitating the reduction of W6+ to W5+. Furthermore, the 6 at% Fe3+-doped W18O49 bilayer film exhibited excellent photochromic performance, with the ultrahigh Tlum and ΔTsol of 82.9% and 60.2%, respectively, fast photochromic speed (within 2 min), and nearly complete near-infrared light blocking in the colored state. These findings demonstrate the potential of Fe3+-doped W18O49 to significantly improve the performance of photochromic smart windows, offering promising avenues for energy-efficient building technologies.
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Lubricants
·
2024
·Vol. 12
·期 5
·146
·
IF 3.1
Shuo Xiang,Xinghao Zhi,Hebin Bao,Yan He,Qinhui Zhang,Shigang Lin,Bo Hu,Senao Wang,Peng Lu,Xin Yang,Qiang Tian,Xin Du
The layered double hydroxide (LDH) has been practically applied in the field of tribology and materials science due to its unique physicochemical properties, weak bonding, flexible structural composition, and adjustable interlayer space. In this work, a series of ultrathin and flexible composition of Ni-Fe LDH samples were prepared via a cost-effective room-temperature co-precipitation process. Then, they were mechanically dispersed into GTL base oil and their lubricating performance were tested by a four-ball tribometer. It is found that the variation of Ni-Fe ratio of Ni-Fe LDH has a great influence on the improvement of lubricating performance of GTL base oil. At the same concentration (0.3 mg/mL), the Ni-Fe LDH with Ni/Fe ratio of 6 was demonstrated to exhibit the best lubricating performance and the AFC, WSD, the wear volume, surface roughness and average wear scar depth decreased 51.3%, 30.8%, 78.4%, 6.7% and 50.0%, respectively. SEM-EDS and X-ray photoelectron spectra illustrated that the tribo-chemical film consisting of iron oxides and NiO with better mechanical properties formed and slowly replaced the physical film, which resists scuffing and protect solid surface from severe collisions.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiao-Juan Wang,Kai-ting Liu,Chuan-Wan Wei,Shu-Qin Gao,Ying-Wu Lin
A metallohydrogel designated as 2-PY-Fe was synthesized via a straightforward method, exhibiting both peroxidase-like and oxidase-like activities. On one hand, based on its peroxidase-like activity, 2-PY-Fe can serve as a catalyst for the degradation of various dyes. On the other hand, 2-PY-Fe metallohydrogel was used as an oxidase-like nanozyme to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to oxTMB. The addition of nitrite can trigger the diazotization of oxTMB, resulting in a decrease in the absorption peak at 654 nm and the emergence of a new signal peak at 446 nm resulting from the diazotization of oxTMB. Simultaneously, the existence of nitrite induces the decrease of the electro-oxidation signal of TMB and presents a new electrochemical signal from nitrite itself. A ratiometric colorimetric/electrochemical method and a smartphone-assisted detection method were established, combining the oxidase-mimicking catalysis and diazotization reaction. Additionally, this developed method was applied to monitor nitrite in real samples.
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Energy Storage Materials
·
2025
·
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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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
·
2025
·
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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Data in Brief
·
2015
·
IF 0
Xinghao Lin,Yanming Zhao,Youzhong Dong,Quan Kuang
This data article contains the synthesis and structure information of a new Fe-base sodium metaphosphate compound, which is related to the research article entitled ‘Synthesis, structural, magnetic and sodium deinsertion/insertion properties of a sodium ferrous metaphosphate, NaFe(PO 3 ) 3 ’ by Lin et al. [1] . The research article has reported a new Fe-base metaphosphate compound NaFe(PO 3 ) 3 , which is discovered during the exploration of the new potential electrode materials for sodium-ion batteries. In this data article, the synthesized process of this metaphosphate compound and the morphology of the obtained sample will be provided. The high-power XRD Rietveld refinement is applied to determine the crystal structure of this metaphosphate compound and the refinement result including the main refinement parameters, atomic coordinate and some important lattace parameters are stored in the cif file. Also, the refined structure has be evaluated by checkcif report and the result is also provided as the supplementary materials.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2016
·
IF 3.205
Qiang Zhao,Dandan Li,Guofeng Gao,Wen Yuan,Genyan Hao,Jinping Li
We describe a novel nanostructured iron oxide catalyst film electrodeposited from iron(II) triflate under mild conditions (room temperature, atmospheric pressure, and near-neutral solution) that can catalyze water oxidation in potassium carbonate solution. The structure, morphology, composition, and catalytic activity of the catalyst were characterized by X-ray diffractometry, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and electrochemical measurements. The results indicate that nanostructured iron oxide is an active electrocatalyst for water oxidation at higher catalytic current and low overpotential.
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WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 10
·2797-2810
·
IF 2.43
Chen Diwei,Zheng Zhiyan,Zhang Feiji,Ke Rufu,Sun Nan,Wang Yonghao,Wang Yongjing
With increased demand for various chemical raw materials, sudden pollution incidents are more prone to occur during their transportation and usage, threatening the environment and human health. In this study, discarded tea stalks were recycled into composite materials (FSC-X00: X represents the calcination temperature) by impregnating tea stalks in Fe 2+ solution combined with subsequent calcination. X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) patterns verified the existence of Fe 0 and Fe 2 O 3 , and Fe 2 O 3 was gradually reduced to Fe 0 when the calcination temperature was raised from 700 °C to 900 °C. FSC-X00 was adopted as a heterogeneous catalyst for activating H 2 O 2 to quickly degrade phenol in the water system. The degradation experiments indicated that FSC-600 exhibited superior degradation performance for phenol (20 mg/L) within 5 min and 80% total organic carbon (TOC) removal rate at pH = 3 within 30 min. The effects of the calcination temperature, the pH value and the amount of H 2 O 2 on the degradation efficiency were investigated. Competing experiments showed that fulvic acid (FA) and inorganic salts Na + had little effect on the degradation performance. The FSC-600 catalyst can be reused by thermal reduction. In addition, it was found that FSC-600 has a good degradation effect on ciprofloxacin (CIP), norfloxacin (NOR) and enrofloxacin (ENR), indicating that FSC-600 catalysts are a promising candidate for quick degradation of organic pollutants by Fenton reaction. Electron paramagnetic resonance (EPR) spectra analysis indicated that •OH is the dominant reactive oxygen species (ROS) and part 1 O 2 from O 2 also participated in the degradation. This study provides an example of creating catalysts from organic solid waste for use in emergency treatment for phenol. Fe@Fe 2 O 3 -loaded biochar (FSC-600) was prepared by waste tea stalks and FeSO 4 combined with calcinations. FSC-600-H 2 O 2 exhibited superior degradation performance for phenol, ciprofloxacin, norfloxacin and enrofloxacin in a short period. Mechanism analysis indicates that •OH is the dominant ROS and a little 1 O 2 from O 2 also participated the degradation.
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WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 237
·期 1
·9
·
IF 3
Liu Yiqing,Hu Hong,Chen Chuanzeng,Xu Linghan
Generally, Fe(II) has an efficiently catalytic activity toward peroxymonosulfate (PMS), but the slow conversion of Fe(III) to Fe(II) and production of iron sludge impede the practical application of Fe(II)/PMS system. In this work, ascorbic acid (AA), a complexing agent and reductant, was introduced to Fe(III)/PMS process to facilitate the Fe(III) reduction. The decoloration of rhodamine B (RhB) was obviously enhanced in Fe(III)/PMS process with the addition of AA. Fe(III)-AA complex was firstly generated in Fe(III)/AA/PMS process via the complexation and then was reduced to Fe(II), which could catalyze PMS to yield oxidative species. Fe(IV), sulfate radical (SO 4 •− ) and hydroxyl radical ( • OH) were the working oxidants for RhB decoloration in this system, and SO 4 •− played a major role. Increasing Fe(III), AA or PMS dosage was beneficial to RhB decoloration, but their excessive concentration would hinder RhB decoloration. The existence of HCO 3 − , SO 4 2− or FA in this system showed an inhibition effect on RhB decoloration, while a facilitation effect was obtained when the high concentration of Cl − was present. This research offers a way to improve PMS activation by Fe(III) and a technology for eliminating the refractory organic pollutants from the contaminated water.
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BIORESOURCE TECHNOLOGY
·
2026
·
IF 8.2
Jin Ge,Zhaoshuang Li,Xu Xu,He Liu,Guoen Yang,Chuntao Kuang,Min Zhang,Zhenfei Yang,Yuanfeng Wei,Yiqiang Wu
Fe/La@MBC adsorbs PSNPs with a Langmuir capacity of 555 mg/g. • Fe/La@MBC maintains >98% removal in real-water matrices. • Magnetic recovery and pyrolysis regeneration retain 85% removal after 5 cycles. • DFT indicates O-containing groups strengthen Fe/La@MBC–PSNP interfacial binding. • Flow-through columns maintain >70% removal after 5 regeneration cycles. Nanoplastics (NPs) are emerging aquatic contaminants with high mobility, colloidal stability, and potential biological accessibility. However, many existing treatment methods mainly transfer captured NPs into a secondary solid phase, leaving NP-bearing residues that still require further handling. To address this issue, Fe-La-modified magnetic almond-shell biochar was prepared as a regenerable adsorbent that integrates nanoplastics capture, magnetic recovery, and pyrolysis-assisted regeneration. Among the prepared materials, Fe/La@MBC-1:1 exhibited the best overall adsorption performance toward polystyrene nanoplastics (PSNPs), with a Langmuir maximum capacity of 555 mg/g. Stable removal behavior was maintained under varying water chemistry conditions and in real-water matrices. Additional tests further showed effective removal at lower PSNPs concentrations and across different particle sizes, surface functionalities, and selected nanoplastic types. The adsorption behavior was associated with enhanced interfacial interactions between Fe/La@MBC-1:1 and nanoplastics, including electrostatic attraction and van der Waals forces. After five adsorption-pyrolysis regeneration cycles, the removal efficiency remained at 85% in batch adsorption and above 70% after the fifth regeneration cycle in flow-through column operation. These results indicate that Fe/La@MBC-1:1 provides a feasible biochar-based route for integrated nanoplastics capture, magnetic recovery, and pyrolysis-assisted regeneration. Download: Download high-res image (145KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Kai Liu,Ziling Liu,Tuanhui Li,Wasim Afzal Muhammad,Xue Liu,Dongbin Dang,Yan Bai
Developing highly efficient single-atom catalysts (SACs) with optimal active-site utilization remains challenging. In this study, a hollow macroporous-mesoporous catalyst composed of iron single atoms supported on nitrogen-doped carbon (Fe/NC) was synthesized using silica microspheres as a sacrificial template and dopamine hydrochloride as a bifunctional C/N source and iron-anchoring ligand, and applied to the CO 2 cycloaddition reaction. According to the experimental results, the Fe/NC catalyst demonstrates exceptional performance in the cycloaddition reaction of styrene oxide with CO 2 , achieving a high yield of 97.45 ± 0.33% (turnover frequency (TOF) = 38.19 h −1 ), despite having an extremely low iron loading of only 1.36 ± 0.01 wt%. This is attributed not only to the superior intrinsic catalytic activity of the Fe N 4 active sites but also to the hollow mesoporous structure with a high specific surface area, which provides stable metal anchoring sites to effectively suppress iron atom aggregation, promotes continuous release of substrates and CO 2 , enhances product diffusion, and thereby improves catalytic efficiency. In addition, the Fe/NC catalyst demonstrates excellent cycling stability, maintaining a high conversion efficiency of 93.26 ± 0.52% after five consecutive recycling tests while preserving its structural integrity. Moreover, the Fe/NC catalyst exhibits broad substrate compatibility. This work provides a theoretical basis for synthesizing porous C/N materials with single-atom loading to achieve efficient catalytic conversion of carbon dioxide Download: Download high-res image (139KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）