Results in Chemistry
·
2026
·
IF 5.8
Xianping Luo,Sihao Yu,Hepeng Zhou,Yongbing Zhang,Jin-Ru Feng
Porous biochar derived from discarded corn stalks was developed as a regenerable adsorbent for treating Tl-containing wastewater. The Tl adsorption capacity of Fe–Mn–Y doped biochar (FMYBC) was significantly enhanced compared to unmodified biochar. The IPD model accurately described Tl(I) adsorption on FMYBC, indicating that intraparticle diffusion is a key controlling step. Removal efficiency remained largely stable over a broad initial pH range of 3–13. Doping with rare earth elements markedly improved the adsorption performance of Fe Mn modified biochar under acidic conditions. However, the presence of coexisting ions (Na + , Mg 2+ , Ca 2+ ) reduced FMYBC's Tl + adsorption capacity. After two adsorption–desorption cycles, MFYBC retained 86.4% of its initial Tl removal capacity, demonstrating good stability and regeneration potential. Based on XPS and FTIR analyses, the primary Tl(I) removal mechanisms include ion exchange, surface complexation, and oxidation.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Weiyi Zhao,Haotian Zhang,Shuai Yang,Hao Wan,Yao Wei,Tongtong Yang,Xian Wang,Yihui Xu,Wancheng Yu,Zhechen Fan,Yixuan Yin,Lin Lin,Xiaozheng Duan,Junjie Ge,Zheng Jiang
Single-atom catalysts (SACs), represented by Fe─N─C, are promising alternatives to Pt in proton exchange membrane fuel cells (PEMFCs). However, the molecular-scale misalignment of the SACs at the triple-phase interfaces (TPIs) has led to extremely low atomic efficiency, making it difficult to translate the high activity of SACs into the actual cell performance. Therefore, the design of the catalyst layer structure to increase the density of reactant-accessible single sites is crucial for the application of SACs in PEMFCs. Here, we report tailored catalyst layer structure induced by hierarchical porous Fe─N─C pot catalysts with tuned surface hydrophilicity. Coarse-grained molecular dynamic (MD) reveals macropores and tuned surface hydrophilicity act as molecular-level “on-switches” that pull Nafion/water domains deep inside, collapsing the classic transport bottlenecks for both O 2 and H 3 O + . Combinatory spectroscopic evidence confirms the superiority of the structure in forming continuous mass transfer channels, thereby increasing site utilization of Fe by 80%. Exceptional P max at 1581 mW cm −2 is achieved, and capable of sustaining 60k AST with 63% performance retained. This study establishes the first design rule that links pore hierarchy and surface chemistry to TPI activation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2026
·
IF 13.8
Shiqi Yang,Donglei Luan,Yahui Wen,Bin Zhao,Tianxi Yang,Juan Yan
Ready-to-eat cooked meat products contain high levels of moisture and nutrients, making them highly vulnerable to microbial contamination and subsequent quality degradation during storage. Therefore, the development of green packaging materials that integrate active preservation functions with freshness indication is of great significance. In this work, a carboxymethyl chitosan (CMCS)/tannic acid (TA)-Fe 3+ coordination hydrogel (CMCS/TA-Fe) film with favorable biocompatibility and degradability was fabricated through a facile coordination-driven self-assembly strategy, leveraging the multiple interactions among CMCS, TA, and ferric ions (Fe 3+ ). The introduction of the TA-Fe 3+ metal-polyphenol markedly enhanced the mechanical performance of the film, increasing its storage modulus (G′) to approximately 2.4 × 10 4 Pa, and endowed it with efficient photothermal conversion capability. Under near-infrared irradiation at 808 nm, the film surface temperature rapidly increased to 103 °C within 15 min, enabling complete inactivation of Escherichia coli and Staphylococcus aureus . In addition, the dynamic coordination structure of TA-Fe 3+ exhibited pH-responsive chromatic behavior in a model system, resulting in distinct and reversible color changes under different pH conditions. These color variations suggest the potential of the CMCS/TA-Fe film as a visual indicator for freshness-related pH changes. When applied to the refrigerated preservation of cooked chicken breast, the CMCS/TA-Fe film combined with near-infrared irradiation effectively inhibited microbial proliferation, delayed pH increase, reduced moisture loss, and preserved textural and sensory quality. Overall, this study demonstrates a multifunctional and environmentally friendly hydrogel film that integrates photothermal antibacterial activity with a pH-responsive color indication function, offering a promising strategy for intelligent food packaging applications.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Zhihui Zhao,Qian Bai,Juanjuan Qi,Hao Han,Junhai Chen,Suiyi Song,Xudong Yang,Qiangwei Li,Jianhui Wang,Lidong Wang
Overcoming the symmetric electronic structure of single-atom catalysts (SACs) to promote the cleavage of O-O bond remains critical for efficient H 2 O 2 activation. Herein, the high-loading Fe SACs (FeN 1 C 2 /C 2 N, 7.2 wt%) is designed via in-situ carbon defect engineering, which breaks the symmetric electronic structure through the nonplanar asymmetric coordination of Fe. DFT calculations and characterizations reveal that compared to the planar symmetric Fe-N 2 structure, N 1 -Fe-C 2 coordination modifies d-p orbital hybridization, inducing the spin state of Fe from low-spin (LS, t 2g : ↑↓ , ↑↓ , ↑↓ ; e g : _, _, _) to high-spin (HS, t 2g : ↑↓ , ↑ , ↑ ; e g : ↑ , ↑ ; _). The HS state weakens the coupling between *H 2 O 2 and Fe 3 d orbitals, promoting H 2 O 2 decomposition into abundant •OH, further achieving electron-rich pollutant Sulfamerazine (SMR) degradation with the rate constant of k obs =0.3308 min -1 . Additionally, such nonplanar asymmetric coordination releases the N atoms adjacent to the Fe sites, allowing them to form electron-transfer channel with SMR, which establishes nonradical electron transfer pathway (ETP). Pollutant pre-adsorption enables •OH to attack the target in situ along an ultrashort pathway, resulting in an efficient ETP-assisted radical oxidation mechanism. Overall, this work provides new insights into SACs design and a novel perspective for Fenton-like systems application.
✓ 已验证
DOI
高影响因子
Environmental Science-Nano
·
2026
·
IF 5.6
Mengru Shan,Yufeng Zhang,Haobin Jin,Siyu Luo,Yanqing Cong,Shiwen Lv,Jing Xu,Yi Zhang
In this work, ZIF-67/Fe nanozymes with specific binding sites toward tetracycline antibiotics (TCs) were synthesized via a one-step method, taking advantage of the strong interaction between Fe and oxygen-containing functional groups in TCs. Taking advantage of the specific enhancement effect of TCs on the peroxidase-like activity of ZIF-67/Fe, a high-performance colorimetric sensor array was constructed. This array could successfully discriminate four types of TCs, namely oxytetracycline, tetracycline, doxycycline, and doxycycline hydrochloride. It exhibited a linear detection range of 50–1000 μg L−1 for all four antibiotics, with limits of detection (LOD) as low as 17.78, 19.71, 33.39, and 38.05 μg L−1, respectively. Density functional theory (DFT) calculations revealed that Fe doping significantly enhanced the peroxidase-like activity of the nanozyme by facilitating electron transfer between the nanozyme and TCs. Furthermore, the ZIF-67/Fe nanozyme could effectively achieve TC removal after the detection process, and it still maintained the capability to accurately distinguish tetracycline antibiotics in real water samples. The one-step preparation strategy proposed in this study simplifies the synthesis process of MOF-based nanozymes. The constructed sensor array breaks through the technical bottleneck that traditional methods find it difficult to distinguish antibiotics of the same category. With the dual functions of high-sensitivity detection and pollutant removal, it provides a new idea for the accurate monitoring and control of TCs in aquatic environments.
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2026
·
IF 4.8
Shilong Teng,Qiang Le,Zhaodong Nan
The rational design and fabrication of high-efficiency catalysts for Fenton-like reactions have become a central research direction. As a recently emerging catalyst of great interest, the catalytic performance of bimetal-doped g-C 3 N 4 (graphitic carbon nitride) is still limited by the electron transfer. In this study, Fe and Mn co-doped g-C 3 N 4 (designated as Fe/Mn-CCN) was prepared via a co-sintering method, which an internal electric field was formed via a homojunction generation from the introduction of cyano groups (-C N) in Fe/Mn-CCN, enhancing electron transfer and catalytic activity for the degradation of tetracycline (TC) through the Fenton-like reaction. Simultaneously, it modulated the electronic density of metal active sites to enhance the adsorption capacity for TC and PMS. The rate constant of the reaction is 4.34 times higher than that of the pristine bimetallic catalyst (Fe/Mn-CN). The turnover number (TON) of Fe/Mn-CCN reaches as high as 32 × 10 −4 (g/L min) −1 , outperforming most reported graphitic carbon nitride (g-C 3 N 4 )-based catalytic systems with a significant enhancement in catalytic efficiency. Furthermore, the degradation efficiency retains 90% after continuous cyclic reactions for 12 h, demonstrating its excellent structural stability. This study provides a new perspective for the development of environmentally friendly materials used in pollutant degradation.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122490
·
IF 7.5
Ruiqi Li,Wenxin Diao,Jie He,Fangbo Zhao,Xiao Yan Tang,Yueling Sun,Junqing Li,Lei Wang
As modern industry continues to develop rapidly, water pollution caused by antibiotics and synthetic dyes has become increasingly severe. To address the challenge of efficient treatment of such organic wastewater, a novel modified MIL-101(Fe) photocatalyst was constructed via a synergistic strategy of Cu²⁺ doping and in-situ polymerization of aniline. Under simulated solar irradiation, the composite photocatalyst achieved degradation efficiencies of 93.06% for tetracycline and 94.2% for methylene blue, exhibiting broad-spectrum photocatalytic activity toward various organic dyes. Cu²⁺ and PANI synergistically optimize the band structure, narrowing the bandgap to 2.23 eV while broadening the visible-light response range, promoting charge transport, and forming a stable Z-scheme heterojunction at the interface to suppress the recombination of photogenerated charge carriers. The results of reactive species trapping experiments showed that ·OH, h⁺, and ·O 2 - collectively governed the degradation process. The core mechanism stems from the ligand-to-metal charge transfer (LMCT) characteristics of MIL-101(Fe), the electron-trapping effect of Cu²⁺, and the conjugated conductive network of PANI. In addition, the composite photocatalyst exhibited strong resistance to ionic interference and maintained degradation efficiencies above 80% after five consecutive cycles, demonstrating excellent stability and reusability. This work provides an efficient photocatalytic material and a promising strategy for the comprehensive treatment of organic wastewater.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jinlin Hu,Haojie Zhang,Simeng Xia,Yishu Cai,Zhou Shi,Lin Deng
The widespread occurrence of carbamazepine (CBZ) in aquatic environments necessitates efficient water treatment technologies. This study developed a cobalt-doped iron oxychloride (Co-FeOCl) catalyst via a facile calcination method to activate peracetic acid (PAA) for enhanced degradation of CBZ. The incorporation of Co into the FeOCl structure dramatically boosted the catalytic performance, with 0.5Co-FeOCl exhibiting superior activity compared to pristine FeOCl. The 0.5Co-FeOCl/PAA system achieved an apparent rate constant of 0.039 min⁻ 1 , 19.5 and 5.6 times higher than that of the PAA alone (0.002 min⁻ 1 ) and FeOCl/PAA (0.007 min⁻ 1 ) systems, respectively. Mechanistic investigations revealed that the degradation was primarily driven by organic radicals (CH 3 C(O)OO• and CH 3 C(O)O•) and high-valent metal species (Co(IV) and Fe(IV)). The Co doping established synergistic Fe(II)/Fe(III)-Co(II)/Co(III) redox cycles, effectively accelerating the rate-limiting Fe(III) reduction step and facilitating continuous generation of reactive species. XPS analysis confirmed an increased surface Fe(II) content after reaction, supporting this synergistic mechanism. Density functional theory (DFT) calculations proved that Co sites exhibit superior adsorption capacity for PAA compared to Fe sites on three main facets. This work not only presents 0.5Co-FeOCl as a highly efficient and stable catalyst for PAA activation but also provides fundamental insights into the synergistic mechanisms in bimetallic/PAA systems for remediating refractory organic pollutants.
✓ 已验证
DOI
高影响因子
Water Cycle
·
2026
·
IF 7.9
Yuze Li,Wei Li,Yue Yuan,Jian Zhang,Ningruo Wang,Heng Zhang,Xuejia Li,Yujia Xiang,Bo Lai,Peng Zhou,Chuanshu He,Yang Liu
The inherent inefficiency associated with the utilization of micro-concentration hydrogen peroxide (H 2 O 2 ) in conventional Fenton systems arises from the sluggish cycling between Fe(III) and Fe(II). To address this fundamental limitation, the present study demonstrates that complexes formed between Fe(III) and fulvic acid (FA) can effectively harness visible-light-driven ligand-to-metal charge transfer (LMCT). This photochemical process facilitates a synergistic dual-pathway activation of H 2 O 2 : 1) Fe(II) generated through intramolecular electron transfer reduction of the Fe(III)-FA complex directly activated H 2 O 2 ; 2) In the photoexcited *Fe(III)-FA complex, the reduction of the key intermediate *OOH lowered the activation energy barrier, facilitating the formation of ∙OH and O 2 ·- radicals. Moreover, at a stoichiometric molar ratio of H 2 O 2 to contaminant set at 1:1, contaminant removal efficiency achieves an impressive 95%. This light-enhanced mechanism establishes a new paradigm for efficient micro-concentration -level oxidation using H 2 O 2 , demonstrating exceptional effectiveness in eliminating trace pollutants.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Xueyan Ma,Tianmei Xu,Xinmeng Li,Qingcui Liu,Siyi Jing,Yudai Huang,Juan Ding,Weiwei Meng
Abstract Vanadium redox flow batteries (VRFBs) have garnered distinguished attention for their feasibility to enable cost-effective large-scale energy storage. Nonetheless, the electrochemical activity of electrodes is constrained during vanadium redox reactions, posing a problem for accomplishing high-performance VRFBs. Herein, we prepare a defect-rich Fe-coal-based carbon nanofiber electrode (Fe-ECNFs-600) via electrospinning followed by high-temperature carbonization. The Fe-ECNFs-600 contains moderate oxygen defects, Fe3O4 nanoparticles, and oxygen-containing functional groups, which can regulate the electronic structure, improve electrical conductivity, electrolyte wettability, and catalytic activity for the VO2+/VO2+ and V3+/V2+ redox couples. The VRFB with the Fe-ECNFs-600 electrode exhibits improved discharge capacity and energy efficiency compared with ECNFs-600 at 100 mA cm–2. This work may provide a defect regulation strategy for developing self-supporting electrode materials for VRFBs.
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Qiulin Ma,Yali Wang,Gang Wang,Chun Chang,Liyang Ma
Abstract Solvent modulation synergized with Fe catalysis offers a promising strategy for regulating fractionated bio-oil formation during co-hydrothermal liquefaction. Herein, corn stover (CS) and spirulina (SP) were used as feedstocks in this study. An ethanol-water co-solvent system (EWCS) containing 62.5 vol% ethanol was identified as optimal, where the bio-oil yield and energy recovery (ER) peaked at 52.49 and 95.61%, respectively, far above those of pure water (23.00, 45.07%) and pure ethanol (47.95, 81.57%). To avoid overlapping components obscuring the intrinsic catalytic behaviors of Fe, the recovered bio-oil was separated into water-soluble (WSB) and water-insoluble (WISB) fractions. The bio-oil yields, elemental distributions, and chemical compositions were compared under Fe catalysis in pure water, EWCS, and pure ethanol. The solvent-only effect raised the WSB yield to nearly 40% and drove feedstock nitrogen toward the WSB, elevating the nitrogen recovery (NR) of the WSB in EWCS to 55.73% while suppressing that of the WISB to 9.68%. The heating values of the two fractions remained comparable under Fe-catalyzed conditions, ranging from 30.20 to 34.30 MJ/kg. Fe barely changed the bulk bio-oil yield yet markedly reshaped the composition. The catalytic performance of Fe exhibited a clear dependence on the proportion of water within the co-solvent. It promoted hydrodenitrogenation (HDN) and phenol enrichment in pure water, directed ethanol dehydrogenation into aldol condensation that anomalously raised the WISB oxygen content in EWCS, and integrated esterification with hydrodeoxygenation (HDO) in pure ethanol. The regulatory effect of solvent polarity on nitrogen distribution and Fe active species provides innovative insights for the sustainable production of upgraded Co-HTL bio-oils.
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2026
·
IF 3.2
Yongwei Li,Shuting Fan,Zhihao Fang,Xiangru Zeng,Jinting Jiang,Fangfang Liu,Xuening Lun,Chengjie Li
A simple mineralizer regulation strategy is developed to tune the structure of hydrothermal MIL-100(Fe). • NaHCO 3 enhances the surface area of MIL-100 (Fe), affording superior XO adsorption performance. • Synergistic pore adsorption, hydrogen bonding, Fe 3+ coordination and π-π stacking enable efficient XO removal. Metal-organic frameworks (MOFs) are promising crystalline porous solids, whose functional properties are highly dependent on their crystallinity, defect states and pore characteristics. In this work, hydrothermal synthesis was employed to prepare MIL-100(Fe) materials modulated by three different mineralizers: sodium carbonate, acetic acid, and sodium bicarbonate; mineralizer-free pristine MIL-100(Fe) was used as the reference sample. The addition of mineralizers effectively modulates the crystal structure and porosity of MIL-100(Fe). All mineralizer-modified samples exhibit larger specific surface area compared with the pristine material. Among them, NaHCO 3 -regulated MIL-100(Fe) achieves the best adsorption performance toward xylenol orange (XO), which originates from its optimized porous structure. Adsorption experimental data fit well with the pseudo-second-order kinetic model and Langmuir isotherm model. The maximum monolayer adsorption capacity calculated by the Langmuir model reaches 155.28 mg/g, which is competitive with many reported adsorbents. Synergistic adsorption mechanisms, including pore-filling effect, hydrogen bonding, Fe 3+ complexation and π-π stacking interactions, have been elucidated. This work presents a facile mineralizer-mediated strategy for tuning the solid-state structural features of MIL-100(Fe), offering experimental insights for the structure-performance optimization of Fe-based MOF solids. Download: Download high-res image (357KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）