DYES AND PIGMENTS
·
2026
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IF 3.9
Jing Wang,Yuanyuan Tang,Yanmin Zhang,Xiangfeng Kong,Yan Liu
β -glucan served as the raw material to fabricate β -glucan-Eu(tta) 2 (phen), effectively enhancing Eu 3+ luminescence by synergistic sensitization. • β -glucan-Eu(tta) 2 (phen) showed selective luminescence quenching for Fe 2+ /Fe 3+ by a static quenching mechanism. • β -glucan reduced Eu 3+ coordination complex cytotoxicity and conferred antibacterial activity against S. aureus and E. coli. • Flexible luminescent films retained sensing performance and facilitated visual Fe 3+ detection. This study presents a novel lanthanide luminescent material featuring a synergistic sensitization system composed of β -glucan, 4,4,4-trifluoro-1-(thiophen-2-yl) butane-1,3-dione (tta), and 1,10-phenanthroline (phen), which efficiently enhances and modulates the luminescence of Eu 3+ . The resulting β -glucan-induced Eu 3+ coordination complex exhibits specific luminescent responses toward Fe 3+ and Fe 2+ , with detection limits (LOD = 3 σ /K SV ) of 1.44 μmol·L -1 and 1.05 μmol·L -1 , respectively. The luminescence quenching mechanism was attributed to static quenching, accompanied by the inner filter effect. Notably, luminescence quenched by Fe 3+ is reversible upon the addition of EDTA, whereas no luminescence recovery is observed when EDTA is introduced subsequent to Fe 2+ -mediated quenching. Furthermore, the antibacterial activity and cytotoxicity of β -glucan-induced Eu 3+ coordination complex have been evaluated. The antibacterial zone experiments confirm that β -glucan-induced Eu 3+ coordination complex has good antibacterial effects on both Staphylococcus aureus ( S. aureus ) and Escherichia coli ( E. coli ). β -glucan exerts a pronounced effect on mitigating the toxicity of Eu 3+ coordination complex. β -glucan-induced Eu 3+ coordination complex can form flexible luminescent films with carrageenan (CRG) or D4 hydrogel (D4), while retaining excellent luminescent properties, thereby holding significant potential for application in the detection of metal ions in environmental water samples. Download: Download high-res image (253KB) Download: Download full-size image
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Zhimin Cui,Yongyun Mao,Dandan Gao,Jiyang Xie,Wanbiao Hu
Stimuli-responsive hydrogels with reversible property switching are highly desired for soft electronics, but achieving this with a single stimulus remains challenging. Herein, a novel PAM/CMC@Fe 3 + dual-network hydrogel is engineered via a UV-triggered Fe 3 + /Fe 2 + valence cycle. UV light reduces Fe 3 + to Fe 2 + , producing a soft adhesive state, while subsequent air oxidation re‑oxidizes Fe 2 + to Fe 3 + , restoring the tough solid state. By simply tuning the Fe 3 + ‑to‑citrate ratio, mechanical properties and self‑healing efficiency are effectively programmed, navigating the trade‑off between mechanical integrity and healability. Taking advantage of this photosensitivity, the gel serves as a high‑performance bio‑ink for photocuring 3D printing. More importantly, its photo‑tunable adhesion enables an optically modulatable triboelectric nanogenerator (TENG) as an adaptive sensor. The gel acts as an intelligent triboelectric layer whose output signals are dynamically tuned by light, achieving a peak power density of ∼2.6 nW/cm 2 . This work demonstrates the gel's potential in wearable e‑skin for motion monitoring and robotic tactile perception, establishing a versatile platform from fundamental dynamic chemistry to functional device integration for next‑generation adaptive soft electronics.
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DOI
高影响因子
ACS Nano
·
2025
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IF 16
Ziyou Wang,Yiling Huang,Shuai He,Meng Li,Jing Gong,Lei Cheng,Jiyao Li,Yi Deng,Kunneng Liang
Currently, emerging dynamic therapy has gradually become a frequently used strategy for treating infectious bone defects via a rise in reactive oxygen species (ROS) levels, which can bring about oxidative harm to bacteria. However, ROS can be generated only under conditions of exogenous energy, limited by energy penetration or dependence on the existence of internal O2/H2O2. Thus, we designed Na2S2O8-decorated polyetheretherketone implants activated by Fe2+ for infected bone defects. In vitro experiments show that they generate sulfate radical (·SO4–) and hydroxyl radical (·OH) without O2/H2O2 existence, effectively killing bacteria. Additionally, the released Fe2+ enters bacteria and triggers ferroptosis-like death via lipid peroxidation. In vivo experiments show implants achieve an ideal effect of bone integration through a high-efficiency bactericidal effect and enhanced osteogenic activity. As envisioned, our proposed strategy offers a promising approach to halt refractory infection of bone tissue by autonomously catalyzing ROS storms and ferroptosis-like death, facilitating bone-defect recovery.
研究领域:
生物医学工程
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骨科医学
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材料科学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Gege Hu,Hangyu Hu,Zengjia Zhou,Tariq Aziz,Zhennai Yang,Zhang Yang,Nada K. Alharbi,Ashwag Shami,Fahad Al-Asmari,Hajar AlQadeeb,Maher S. Alwethaynani,Fakhria A. Al-Joufi
One of the vital functional biopolymers produced by lactic acid bacteria (LAB) is exopolysaccharide (EPS) that has been extensively studied, but less research has been done on the EPS production by pediococci . In this study, the EPS synthesis in Pediococcus acidilactici BCB1H regulated by Fe 2+ was investigated by a multi-omics method. Adding Fe 2+ (0.6 g/L) in a semi-defined medium was shown to significantly increase the EPS production from 225.5 to 271.5 mg/L by BCB1H. Joint transcriptomics and proteomics analyses on BCB1H under Fe 2+ interference revealed upregulation of phosphotransferase systems (PTS), the key pathway to synthesizing EPSs. Further joint transcriptomics and metabolomics analyses showed a total of 22 differential metabolic pathways, including overall metabolic pathways, biosynthesis of secondary metabolites, metabolism of microorganisms in different environments. Integrated multi-omics analysis for the key differentially expressed genes, proteins and metabolites with synergistic effects revealed decarboxylating 6-phosphogluconate dehydrogenase (Gnd), acetyl-CoA carboxylase biotin carboxylase subunit (AccD) and EII sugar-specific permease (EIIs) genes that were upregulated, while glycerol kinase (GlpK) and alcohol dehydrogenase (AdhP) downregulated. Therefore, Fe 2+ enhanced the EPS synthesis in BCB1H by promoting accumulation of fructose-6-phosphate, glycerate and malate, and reducing production of d -fructose-1,6-diphosphate and glycerone-phosphate, mainly by regulation of the pentose phosphate pathway, tricarboxylic acid cycle, glycolysis and gluconeogenesis pathways, and glycerolipid metabolism pathways. The present study was significant for further understanding the regulatory mechanism of EPS biosynthesis in LAB.
研究领域:
微生物学
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分子生物学
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食品科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yueqian Yan,Xiaohong Zhou,Wen Jin,Xingyuan Wang,Lei Song,Ziyi Luo,Tuqiao Zhang,Miaomiao Ye
Fenton reaction is a traditional advanced oxidation process that has long been used for wastewater treatment. However, the narrow pH range of 2–4, the inefficient utilization of both H 2 O 2 and Fe 2+ , and the large amount of iron sludge formation limit its application. Here, we prepared sodium alginate composite hydrogel spheres with both Fe 2+ and CoS 2 loading (denoted as CoS 2 /Fe/SA hydrogel spheres) to construct a CoS 2 /Fe/SA + H 2 O 2 reaction system. The degradation efficiency of carbamazepine (CBZ) in the CoS 2 /Fe/SA + H 2 O 2 system was significantly enhanced with a first-order kinetic reaction constant of 0.1958 min −1 , which is 8.9 times higher than that in Fe 2+ +H 2 O 2 system. When the initial solution pH was in the range of 2–8, the removal rate of CBZ at 90 min reaction time ranged from 96.5 % to 99.9 %. The enhanced degradation efficiency even in a slightly alkaline aqueous solution was due to the sustained slow release of Fe 2+ from the CoS 2 /Fe/SA hydrogel spheres that enhances the utilization of Fe 2+ and the promotion of Fe 3+ /Fe 2+ cycling via CoS 2 . Moreover, the release amount of Fe 2+ in CoS 2 /Fe/SA hydrogel spheres could be controlled by tuning the Fe 2+ loading amount during preparation, which in turn determines its number of cycling uses.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Environmental Technology & Innovation
·
2024
·
IF 6.7
Binbin Wu,Zheng Wang,Yannan Jia,Nannan Xu,Lisha Liao,Chenyue Zhang,Zhiwei Wang,Yuanxiang Shan,Wanting Feng,Hongqin Xue
Biochar loaded with bimetallic Fe/Mo (Fe/Mo-BC) was prepared as a cost-effective catalyst for the degradation of organic matter by activated peroxydisulfate, in which MoO 2 was used as a co-catalyst to enhance Fe 2+ /Fe 3+ cycling. The tetracycline-degradation efficiency of the system reached 74.49 % within 10 min, and it showed high removal rates over a wide pH range (3–9). Quenching experiments and electron paramagnetic resonance analyses showed that 1 O 2 , •OH, O 2 • - , and SO 4 • − produced by the Fe/Mo-BC/PDS system are involved in tetracycline degradation, with 1 O 2 and •OH being the dominant active substances. X-ray photoelectron spectroscopy analysis revealed that Mo(IV) reduces Fe 3+ to Fe 2+ and oxidizes itself to Mo(VI). In addition, the Fe/Mo-BC remained stable and could be recycled three times, indicating the feasibility of this system for practical applications. The possible pathways of TC degradation by this system were investigated by LC-MS and DFT calculations. Thus, the present study provides a feasible strategy for the use of biochar-loaded bimetallic materials and PDS for the degradation of organic matter.
研究领域:
环境科学
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污染控制
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材料科学
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2022
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IF 8.431
Xiang Meng,Jianlong Wang,Lejin Xu
To further improve the treatment capacity of actual wastes, H + was introduced into the homogeneous Fenton system as a co-catalyst for dissolution and degradation of the mixed nuclear-grade cationic and anionic exchange resins. The effects of acid type and concentration, catalyst type and concentration, H 2 O 2 dosage, initial temperature, antifoaming agent and resin ratio were studied. The concentration of inorganic acid , type and concentration of catalyst had significant influence on the decomposition of mixed resins. The experimental results showed that when the mixing ratio of resins was 1:1, the initial temperature was 96 ± 1 °C, the amount of H 2 O 2 was 200 mL, and the concentration of H + /Fe 2+ was 1 M/0.1 M, complete dissolution and 79% weight reduction of mixed resins were obtained. Combined with density functional theory (DFT) calculations, cationic exchange resin and anionic exchange resin showed different reactivity in the experiment. Hydroxyl radicals (•OH) tended to attack –SO 3 - groups with more negative charges, and the barrier energy of –SO 3 - ion dissociation was 8.2 kcal/mol, which caused the cationic exchange resin to be easily destroyed. According to the characterization results, the characteristic intermediates were determined, indicating that desulfonation, valence change of nitrogen atom , and cleavage of long-chain carbon skeleton existed during the reaction, but incomplete oxidation still remained.
研究领域:
环境科学
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核废物处理
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Yan Yi,Xiangyu Wang,Yaxian Zhang,Jun Ma,Ping Ning
The aquatic plant Egeria najas based biochar was innovatively constructed by modifying it with Fe 2 (SO 4 ) 3 (Fe 2 (SO 4 ) 3 @EN-BC) for Cr(VI) removal. The characterizations of Fe 2 (SO 4 ) 3 @EN-BC confirmed that Fe 2 (SO 4 ) 3 was attached to biochar in form of Fe 2 O 3 after hydrolysis and calcination under high temperature. The results showed that Fe 2 (SO 4 ) 3 @EN-BC had a high removal efficiency of Cr(VI) with approaching 99.88%, which was about 7 times higher compared to unmodified biochar (EN-BC). Batch experiments of Cr(VI) removal included initial concentration, reaction temperature, solution pH and kinetics were conducted. The adsorption kinetics could be more accurately explained using pseudo-second order kinetics model , indicating the chemical adsorption controlled the reaction process. According to the Langmuir model, the maximum adsorption capacities for Cr(VI) were 138.79, 159.36 and 190.91 mg/g at 298, 313 and 333 K, respectively. Moreover, based on FTIR and XPS results, the Fe 2 (SO 4 ) 3 @EN-BC surface was loaded with many functional groups conducive to Cr(VI) adsorption. The main removal mechanisms of Cr(VI) by Fe 2 (SO 4 ) 3 @EN-BC included adsorption and reduction, and the percentage of Cr(VI) removed by adsorption and reduction were 19.1% and 80.9%, respectively.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Qinxue Yang,Ying Yan,Xiaofang Yang,Guiying Liao,Jie He,Dongsheng Wang
The possible effect of complexation of tetracycline (TC) with metal ions on the degradation of TC by homogeneous activated peroxymonosulfate (PMS) was investigated. The oxidation kinetics of TC indicated the differences in PMS activation ability by Fe 2+/3+ and Ru 3+ . Fe 2+/3+ could activate PMS to generate HO• and SO 4 - • as is known, while Ru 3+ promoted the generation of 1 O 2 from PMS, though 1 O 2 may be not the only and dominant oxidant. The stronger complex ability of Ru 3+ and Fe 3+ with TC than Fe 2+ contributed to the enhanced oxidation of TC in Fe 3+ /PMS and Ru 3+ /PMS systems. The complexation facilitated TC degradation possibly due to the electron reconfiguration of metal ions and TC, such as reduce the stability of -C–C- double bands in TC structures and made it more vulnerable. The complexation reactions were commonly occurred but ignored in metal species activated PMS systems, the findings in this study suggested that the interaction between metal ions and organic contaminants should be reconsidered and utilized in the development of AOPs.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Van Tu Nguyen,Yue Li Liu,Shah Abdul Hakim,Amr Rady Radwan,Bin Wei,Wen Chen
Fe 2-x Sn x (MoO 4 ) 3 samples were successfully synthesized by wet chemical route. The analytical results of X-ray diffractions indicated that the additions of tin have not destroyed the lattice structure of Fe 2-x Sn x (MoO 4 ) 3 , but increased the units cell volume. Fe 2-x Sn x (MoO 4 ) 3 can be exhibited higher discharge /charge capacities and better cycle-stability than the pristine one. At room temperature, the initial discharge capacity of Fe 1.95 Sn 0.05 (MoO 4 ) 3 is 83.12 mAh g -1 at a discharge rate of 0.5 C and remains 78.81 after 50 cycles. The improved electrochemical properties can be explaining with the presence of tin in the lattice of Fe 2 (MoO 4 ) 3 by improved the structure stability and electrical conductivity.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF HYDROLOGY
·
2023
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IF 6.4
Cui Gan,Zhaobo Luo,Chengyuan Su,Lei Tong,Hui Liu
Iron redox is often coupled with the degradation and conversion of co-existing organic pollutants, however, their co-transport behavior in hyporheic zone is not clear. In this study, the characteristics and mechanism of reactive co-transport of Fe 2+ and antibiotics during groundwater discharge were revealed by quartz sand column simulation. It was found that Fe 2+ inhibited the transport of three antibiotics sulfamethoxazole (SMX), ofloxacin (OFL), and oxytetracycline (OTC) in the quartz column, and the average inhibitory intensity was OTC (∼80%) > OFL (∼20%) > SMX (∼2%). Meanwhile, the content of dissolved oxygen in the column decreased from more than 7 mg/L to 3 mg/L. Fe 2+ transport in the column was promoted with the increase of OTC and OFL concentrations (2–50 mg/L), as Fe 2+ -OTC and Fe 2+ -OFL complexes inhibited the formation of lepidocrocite and induced Fe 2+ / Fe 3+ cycling during co-transport of Fe 2+ and OTC. In contrast, the interaction between SMX and Fe 2+ was not obvious due to the electrostatic repulsion. Due to the prevalence of Fe 2+ and antibiotics in groundwater system (especially with high antibiotic contamination), this study provides a new perspective on the potential environmental impacts of Fe and pollutants co-transport during groundwater discharge.
研究领域:
环境科学
·
水文学
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微生物学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 46
·期 2
·739-746
·
IF 3.591
Tao Wang,Xiqing Liu,Mei Liu,Runhua Liao,Hongquan Zhan,Xiaoxue Qi,Yongqing Wang,Yanju Huang
Black TiO2 and metal–organic frameworks (MOF) are great materials with light-harvesting ability, redox power and consequently catalytic activity. Here, the integration of MIL-100(Fe) with TiO2(B) composite was designed for photocatalytic application, which greatly promoted light-harvesting and charge transfer. As expected, the integrated TiO2(B)/MIL-100(Fe) composite showed high photocatalytic activity due to unique Fe–O–Ti bonds that were constructed, which acted as an electronic tunnel to reduce electronic transfer resistance between MIL-100(Fe) and TiO2(B). In addition, the presence of Fe–O clusters in MIL-100(Fe) can also promote the charge dissociation and improve catalytic activity via the Fe3+/Fe2+ redox cycle. This achievement would help us to understand and design charge transfer pathways in the integration of MOF/semiconductor photocatalysts.
研究领域:
材料科学
·
光催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）