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.
✓ 已验证
产品关联
DOI
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
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·Vol. 108
·期 7
·e20447
·
IF 3.8
Mingyang Zhao,Xiao Chen,Huiping Zhu,Songqin Xia,Yan Ma,Kyle S. Brinkman,Zhenfeng Tong
This study systematically explored the crystal chemistry of Fe-substituted hollandite (Fe-hollandite) solid solutions (Ba x Cs y )(Fe 2 x + y Ti 8−2 x − y )O 16 ( x + y = 1.33) yielding reliable results through meticulous Rietveld analysis of XRD data. Continuous Cs substitution triggered a monoclinic-tetragonal (M-T) phase transition, enhancing structural stability, as evidenced by increased tolerance factor ( t H ). The transition boundary, controlled by t H = .985, determines the symmetry of the hollandite phase. Unit cell parameters and the local bonding environment were refined, indicating enlarged tunnel sizes/cavities with higher Cs content, attributed to a larger ionic radius (Cs + vs. Ba 2+ ). Comparison between Cs/Ba-O bond distances and tunnel cross-section sizes confirmed effective A-site cation immobilization, hindered by oxygen bottlenecks. Additionally, a refined model was proposed and validated to predict lattice constants of Fe-hollandite precisely. Beyond crystal chemistry evolution with Cs substitution, leaching resistance in the same sample suites was assessed. As Cs content increased, normalized elemental release of A-site cations initially decreased until reaching a minimum at intermediate Cs substitution, then rose again. Ba 0.33 Cs 1.0 Fe 1.66 Ti 6.34 O 16 (i.e., HF5) displayed optimal leaching resistance. Variations in leaching resistance might be influenced by the distortion in [BO 6 ] octahedra and the bonding environment of tunnel cations. This comprehensive analysis highlights intricate correlations between crystal chemistry and leaching resistance, offering insights to guide the design of advanced crystalline nuclear waste forms with enhanced corrosion resistance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Junpu An,Hongchen Liu,Fan Yang,Kexin Wei,Chunhui Yu,Siyuan Sun,Yang Sun,Qing Guo,Jianfeng Wang,Chenlin Wang,Jiahui Liu,Kuobo Wang,Yongfeng Li
Nickel-based catalysts show great potential as promising candidates for the electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF). However, the limited adsorption capacity of nickel-based catalysts for OH – and HMF limits their further development. In this study, amorphous Fe/NiOOH-SO x was generated from nanosheets (Fe/NiOOH-Ni 3 S 2 ), which was pre-fabricated on nickel foam via pre-reconstruction and anionic regulation strategy. The optimized catalyst Fe/NiOOH-Ni 3 S 2 demonstrated exceptional activity in the HMF oxidation reaction (HMFOR) with a current density of 10 mA cm −2 at 1.32 V vs RHE, accompanying with the 98.9 % HMF conversion, 97.8 % 2,5-Furandicarboxylic acid (FDCA) selectivity, 96.8 % Faraday efficiency, and stability for ten cycles. The incorporating amorphous FeOOH reduces the electron density around Ni, promoting the formation of high-valent Ni spices. Meanwhile, the SO x combined with amorphous hydroxy nickel oxide provides unsaturated sites, which enhances the adsorption capacity of HMF. Density functional theory (DFT) computations reveal that the designed amorphous Fe/NiOOH and surface-adsorbed SO x collectively modulate the electronic structure of the catalyst, causing an upwards shift of the NiOOH d-band center and enhancing adsorption capacities for both HMF and OH – . This study proposes the adsorption enhancement mechanism of regulating electronic structure and offers a rational strategy for HMFOR electrocatalysts.
✓ 已验证
产品关联
DOI
PubMed
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.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Ruoyi Chen,Fuding Tan,Xiang Wang,Yuxin Hou,Ming Ouyang,Xingyun Guan,Peng Liu,Zuliang Wu,Shuiliang Yao,Steven L. Suib,Daiqi Ye
The transportation and transformation of biogenic isoprene are vital for the organic carbon cycle in the troposphere. As a typical mineral with high oxidation potential, Fe-substituted cryptomelane oxidizes the surface monolayer of isoprene into formic and acetic acids, and simultaneously, the Mn4+ ions in the structure are reduced to Mn3+ and Mn2+. The flow of H2O in isoprene decreases the adsorption and oxidation of isoprene significantly, even at low relative humidity (10%). As physisorbed H2O retains Fe-substituted cryptomelane’s crystal structure and oxidation ability, the adsorption and oxidation capacity recovers when H2O is absent in the isoprene flow. Theoretical calculations on (001) surfaces show that isoprene prefers to be adsorbed by the Fe3+ site and H2O tends to form hydrogen bonds. Due to the decrease in total adsorption energy of H2O and isoprene, Fe-substituted cryptomelane favors the adsorption of H2O in the flow of humid isoprene. The low oxidation performance at ambient relative humidity suggests that direct oxidation by aerosols of mineral dust might not be the transformation pathway of biogenic isoprene at night.
✓ 已验证
DOI
PubMed
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 23
·5362
·
IF 3.2
Xiang Zhang,Xiudong Yu,Zhaoyang Li,Haishun Liu,Xiang Xiong,Changjiu Chen,Weiming Yang
Phenol, an essential feedstock widely used in manufacturing and chemical industries, inevitably results in the discharge of phenol-laden wastewater. To enhance the phenol-degradation efficiency of Fe-based amorphous alloys, a novel atomic-scale fabrication approach for Fe-Cu galvanic couples is proposed, enabling the rapid and uniform formation of micro/nano Fe-Cu structures on the surface of Fe-based alloys with significant improvement in the catalytic activity towards phenol. Micron/nano Fe-Cu couples can be fabricated within 15 s at 45 °C. Phenol degradation experiments reveal that the pristine amorphous alloy exhibits a 40 min hatching period before the phenol removal process, and it exhibits a kinetic constant (kobs) of 0.1596 min−1after the hatching period, under conditions of 50 °C, 0.5 g/L catalytic loading, 10 mmol/L H2O2, and pH = 3 towards a 50 mg/L phenol solution. With the micro/nano Fe-Cu galvanic couples, thekobsvalue markedly increased to 2.23~2.36 min−1under identical conditions except for 3 mmol/L H2O2, corresponding to approximately a 14-fold improvement. This cost-effective and time-efficient atomic-scale fabrication strategy offers a promising platform for the development of next-generation catalytic alloys and functional materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jianlun Hu,Kangkang Feng,Yiyang Cong,Xiaoyang Li,Yanjun Jiang,Xiaodan Jiao,Yurong Li,Yuqin Zhang,Xinying Dong,Weifei Lu,Zhi Ding,Hao Hong
Shikonin (Shik), a natural pigment, has received growing interest in various biomedical fields due to its anti-inflammatory, antitumor, antimicrobial, and antioxidant ability. However, some inherent characteristics of Shik, such as its virulence, low bioavailability, and poor solubility, have limited its biomedical applicability. Here, we reported a facile synthetic method to produce the Shik-iron (III) nanoparticles (Shik-Fe NPs), which could overcome these limitations of Shik. The synthesized Shik-Fe NPs possessed a uniform size range of 110 ± 10 nm, negative surface charges, good water dispersity, and high safety. Iron distributed uniformly inside Shik-Fe NPs, and iron constituted 20% of total mass in PEGylated Shik-Fe NPs. When interacting with activated macrophages, Shik-Fe NPs significantly reduced the level of cellular inflammatory factors, for example, iNOS, IL-1β, and TNF-α. Furthermore, the Shik-Fe NPs demonstrated synergistic anti-inflammation and anti-bacterial properties in vivo, since they could release Fe3+ and Shik to eradicate bacteria (Staphylococcus aureus and P. aeruginosa were used as model microbes here) during wound infections and provide full recovery for scald wounds. Collectively, the study established a dual-functional Shik-derived nanoplatform, which could be useful for the treatment of various inflammation-involved diseases.
✓ 已验证
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yapeng Li,Qinghong Pan,Huiting Shi,Youyou Du,Ailing Yang,Da-Peng Yang
The quantitative determination of cholesterol in foods, drugs, and biological fluids holds significant importance due to its potential health risks. Herein, a self-powered photoelectrochemical (PEC) sensor was developed for cholesterol detection. The photoelectrochemical system was constructed by modifying fluorine-doped tin oxide (FTO) electrodes with ZnO/C (serving as the photoanode) and iron-modified CuBi 2 O 4 (denoted as CBFO, functioning as the photocathode) through a controlled deposition process. To enhance detection selectivity, molecularly imprinted polymers (MIPs) were electrodeposited on the photocathode surface. The optimized sensor exhibited a linear detection range of 1–1000 nmol L −1 and a detection limit of 0.26 nmol L −1 (S/N = 3). Practical application of the sensor for cholesterol detection in milk samples demonstrated satisfactory recovery rates (98.6 %–107 %) with relative standard deviations (RSD) ranging from 2.38 % to 4.25 %. These results underscore the potential of this self-powered PEC sensor as a robust platform for rapid and accurate cholesterol determination in food products, pharmaceuticals, and environmental samples.
✓ 已验证
产品关联
DOI
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fenglong Sun,Zhuang Miao,Yue Li,Yang Zhao,Huan Wang
This study innovatively develops monoclinic-phase Fe-doped BiVO 4 nanorods (Fe-BiVO 4 ) via hydrothermal synthesis as a high-efficiency photoanode catalyst for H 2 O 2 photoelectrochemical cells. By optimizing Fe doping (5 wt%), the material achieves a remarkable red-shift in light absorption and reduced bandgap, significantly enhancing visible-light utilization and charge separation. The 5 % Fe-BiVO 4 -based photoelectrochemical cell demonstrates a peak power density of 2.16 mW·cm −2 under AM 1.5G illumination, along with the calculated solar-to-electricity conversion efficiency (SECE) of 2.10 %, which is approximately 2.7 times higher than that of pure BiVO 4 -based photoelectrochemical cell. Crucially, Fe doping modulates the band structure, raising the conduction band to +0.13 V vs. RHE, which suppresses H 2 evolution and directs photogenerated electrons toward efficient H 2 O 2 reduction at the cathode side. The cell exhibits exceptional energy storage capability, delivering a specific capacitance of 31,622 mF·cm −2 (3.26 times enhancement in comparison to BiVO 4 ) after 3 h illumination and remaining 61.3 % specific capacitance after continuous 12 h operation. Combined with robust cyclability and cost-effective fabrication, this work provides a scalable strategy for solar-to-chemical-to-electrical energy conversion.
✓ 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）