ANALYTICAL BIOCHEMISTRY
·
2019
·
IF 2.507
Ying Jiang,Qi-Meng Yang,Qiu-Ju Xu,Shi-Yu Lu,Lin-Yu Hu,Mao-Wen Xu,Ying-Shuai Liu
Biothiols play critical roles in many biological processes and their aberrant is related to a variety of syndromes. A simple and reliable colorimetric method is developed in this work for biothiols detection based on an oxidase mimic, a metal organic framework (MOF) MIL-53(Fe), and a peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB). In this design, MIL-53(Fe) is utilized to catalyze the conversion of TMB to a blue colored 3,3′,5,5′-tetramethylbenzidine diimine, which can be read on a spectrophotometer at 652 nm. The oxidation-induced blue color generation can be efficiently inhibited by biothiols, thus a colorimetric analytical method is proposed for biothiols detection based on the above system. Under optimal conditions, a linear relationship in a range from 1 to 100 μM and a limit of detection (LOD) at 120 nM are achieved with Cys as a model target. The developed platform is further applied to evaluate cellular biothiols in normal (RWPE-1) and cancer (LNCap) cell lines, revealing that the overall biothiols level in LNCap is much higher than that in RWPE-1. This work renders a powerful tool for identifying cancer cells in a simple manner for biomedical diagnosis associated with biothiols.
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高影响因子
ADVANCED POWDER TECHNOLOGY
·
2021
·Vol. 32
·期 9
·3364-3371
·
IF 4.833
Zigui Luo,Xi'an Fan,Yanglin Zhang,Zhenjia Yang,Jian Wang,Zhaoyang Wu,Xin Liu,Guangqiang Li,Yawei Li
Fe-Si soft magnetic composites (SMCs) coated with MnO-SiO 2 composite coatings were fabricated via sintering the ball milled Fe-Si/MnO 2 composite powders. The transformation mechanism from MnO 2 coating to MnO-SiO 2 composite coatings was studied. The effect of MnO 2 content on the microstructure and magnetic properties of Fe-Si soft magnetic composites has also been investigated systematically. The analysis results indicated that MnO 2 would be reduced to MnO by Si in the Fe-Si particles at 780.1 ℃. When the temperature reached 985.8 ℃, the generated MnO and SiO 2 would further combine to form 2MnO·SiO 2 , finally forming the MnO-SiO 2 composite coatings. With the increase of the MnO 2 content from 0.0 wt% to 10.0 wt%, the MnO-SiO 2 composite coatings became thicker, thus the saturation magnetization and permeability decreased gradually. However, exorbitant MnO 2 content above 5.0 wt% would result in excessive in-situ Fe existed in the composite coatings and obvious reduction of Si content in the Fe-Si particles due to the above solid-state reactions. Therefore, the increasing trend of the resistivity was weakened. And the 5.0 wt% MnO 2 coated Fe-Si SMCs exhibited superior comprehensive performance such as high saturation magnetization (186.5 A·m 2 /kg), good permeability (71), low total core loss (362.6 mW/cm 3 at 50 kHz).
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Desalination and Water Treatment
·
2024
·
IF 1
Zhaoyang Su,Xing Li,Yanling Yang
To provide an insight into aluminum (Al) control during the treatment of micro-polluted water, recycling ferric water treatment sludge (Fe-WTS) as an alternative approach was innovatively investigated. Particular attention was paid to the recycling ratio of Fe-WTS when coagulated at an optimized dosage of both Al 2 (SO 4 ) 3 and polyaluminum chloride (OH/Al = 2.0, denoted as PAC 20 ) respectively. Coagulation performance, i.e., turbidity, organics and Al speciation were also examined. A morphological analysis, characterized via floc size and fractal dimension, was further conducted to explore the fundamental floc operational parameters and to elucidate the mechanism of different Al species removal. The results indicate that an appropriate recycling ratio yields improvements in residual Al control. In comparison, Fe-WTS is more effective in dissolved Al (Al D ) removal when coagulated by Al 2 (SO 4 ) 3 , while is proper to the reduction of colloidal Al (Al CO ) when coagulated by PAC 20 . Flocs properties are significantly correlated with Al speciation during the treatment. Specifically, floc size is proportional to Al CO removal rate, however, the value of floc fractal dimension is inversely proportional to Al D removal rate.
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WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 7
·2038-2050
·
IF 2.43
Zhang Ming,Zhang Kuo,Zhou Runjuan,Wang Jinpeng
In this study, a new type of iron/copper bimetallic combined with hydroxylamine (HA) activated peroxymonosulfate (PMS) was constructed to treat organic pollutants. Selecting the azo dye acid orange 7 (AO7) as the representative of organic pollutants, the new system can achieve nearly 100% degradation of AO7 within 5 min. The Fe(III)/Cu(II)/HA/PMS system mainly generates SO 4 ·− to achieve the degradation of AO7 in acidic environment, while neutral and alkaline environments rely on · OH. The presence of hydroxylamine accelerates the cycle of Fe(III)/Fe(II) and Cu(II)/Cu(I) in the system, and enhances the degradation ability of the system for organic pollutants. The addition of trace Cu(II) (1 μM) enhances the ability of a single Fe(III)/HA/PMS system to degrade AO7 in neutral and alkaline environments without causing secondary copper pollution. The common inorganic anions Cl − and NO 3 − in water have almost no effect on the degradation of AO7 in the system. The constructed Fe(III)/Cu(II)/HA/PMS system is an efficient and clean organic pollutant wastewater treatment process, which has very promising application prospects. The effect of hydroxylamine on the activation of peroxymonosulfate in Fe(III)-Cu(II) bimetallic is reported for the first time. The Fe(III)/Cu(II)/hydroxylamine/peroxymonosulfate system can remove 100% of AO7 within 5 min. Hydroxylamine enables Fe(III), which cannot activate peroxymonosulfate, to activate peroxymonosulfate efficiently. A trace amount of Cu(II) can reduce Fe(III) to Fe(II).
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ChemistrySelect
·
2026
·Vol. 11
·期 37
·e74658
·
IF 2.3
Feifei Xing,Yuheng Jing,Fei Wang,Junfeng Feng,Yuwei Chen,Baining Lin,Rukuan Liu,Jianchun Jiang
Developing low-cost and sulfur-free catalysts is essential for converting waste lipids into green diesel. Herein, hydroxyapatite-supported Ni–Fe catalysts were prepared via a one-step co-precipitation strategy and evaluated for lipid hydrotreatment. The optimized 20Ni–Fe/HAP catalyst delivered 97.1% conversion and 89.1% alkane yield in fatty acid hydrotreatment at 240°C, far outperforming the impregnation-derived counterpart, which gave only 13.1% alkane yield under identical conditions. Characterization results revealed that the superior performance originated from the formation of highly dispersed Ni 3 Fe species, abundant accessible Ni active sites, enlarged surface area, and suitable acidity distribution. Increasing the Ni loading beyond 20 wt.% failed to further improve the activity because of reduced active-site accessibility and pore diffusion efficiency. The catalyst also showed excellent adaptability toward practical feedstocks, affording over 98% alkane yields from used cooking oil and acidified vegetable oil at 260°C. Moreover, 20Ni–Fe/HAP maintained stable performance during five consecutive runs, with negligible changes in conversion and C15–C18 alkane yield. This work provides an efficient Ni–Fe/HAP catalytic system for sustainable production of diesel-range alkanes from waste lipids. Graphical One-step coprecipitation creates a Ni 3 Fe catalyst supported on hydroxyapatite with abundant accessible Ni sites and suitable acidity for efficient lipid hydrotreatment. The optimized 20Ni–Fe/HAP catalyst affords high yields of diesel range alkanes under mild conditions, converts used cooking oil and acidified vegetable oil, and remains stable over five consecutive cycles without noble metals or sulfur.
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Catalysis Science & Technology
·
2025
·
IF 4.2
Yifan Zhang,Jiaying Liu,Shiwei Wang,Zhihao Yu,Haojian Zhang,Dong Wang,Lin Zhu,Chunzheng Wu,Hongbo Yu
Modifying noble metal catalysts with transition metal oxides (MO x ) can markedly enhance catalytic performance through synergistic effects, yet precise spatial colocalization of active metal and promoter phases remains challenging. Here, we report the synthesis of KIT-6 supported Pd-MO x (M = Fe, Co, Ni) hybrid nanostructures via in situ transformation of bimetallic PdM nanoparticles under controlled thermal conditions. The resulting Pd-MO x /KIT-6 catalysts displayed superior activity and selectivity in the selective hydrogenation of acetophenone to 1-phenylethanol compared with monometallic Pd/KIT-6. Among them, Pd-CoO x /KIT-6 (Pd/Co=1:1) achieved the highest performance, with 99.7% acetophenone conversion and 98.2% selectivity, and demonstrated broad applicability for hydrogenating diverse ketones. Structural and kinetic studies revealed that interfacial Pd-CoO x sites play a pivotal role: Pd domains efficiently dissociate H 2 , while CoO x species enhance acetophenone adsorption. This synergistic interface-driven mechanism provides a general and costeffective strategy for the selective hydrogenation of multifunctional substrates.
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高影响因子
ACS Nano
·
2025
·
IF 16
Huangxu Li,Xu Wang,Fangyan Liu,Yulun Wu,Jingqiang Zheng,Zezhou Lin,Tiancheng Liu,Jin Xiao,Jianzhong Jiang,Haitao Huang
Fe- and Mn-based polyanionic electrode materials are important cathode materials for sodium-ion batteries (SIBs) due to their low cost. However, due to the low redox potential of Fe2+/3+ and the notorious Jahn–Teller (JT) effect, severe lattice distortion that is associated with Mn2+/3+ redox hinders Fe and Mn redox activation, leading to inadequate cycling stability and rate performance. Here, we discover both high Mn2+/3+ and Fe2+/3+ redox activation in a Na4Mn1.5Fe1.5(PO4)2(P2O7) (NMFPP) material. It is revealed that the substitution of Mn reduces the Fe–O bond covalency, elevating the Fe2+/3+ redox potential to improve the energy density. Furthermore, the JT effect is accompanied by Mn eg orbital splitting, with the dx2–y2 and dz2 orbitals being positioned at the top of the valence band and the bottom of the conduction band, respectively, which primary contributes to reduce the material band gap and facilitate electron transfer. Experimental and theoretical studies discover an anisotropic lattice distortion behavior, which enlarges Na+ diffusion pathways, lowering diffusion energy barriers and enabling rapid Na+ migration. As a consequence, high Fe–Mn redox activity is achieved and the NMFPP demonstrates enhanced energy density, rate performance, and exceptional cycling stability for sodium storage. These findings prove that the JT effect and lattice distortion could synergistically make positive impacts on transition-metal redox activation, which is informative for the design of high-performance electrode materials.
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PubMed
高影响因子
WATER ENVIRONMENT RESEARCH
·
2026
·Vol. 98
·期 2
·e70317
·
IF 2.8
Wenxiao Zhang,Chenzhi He,Ji Tang,Wei Wang,Yanyan Guo,Youcai Zhao,Tao Zhou
Anaerobic digestate, a typical by-product of large-scale biogas plants, faces mounting disposal pressure due to the rapid increase in organic solid waste. In this study, an iron-carbon composite was produced from digestate through polyethylene glycol (PEG)-assisted iron modification followed by low-temperature carbonization. The resulting material exhibited a mesoporous texture, oxygen-containing surface functionalities, and Fe 3 O 4 /Fe 3 C domains, enabling efficient removal of Congo red in batch systems. Removal was favored under mildly acidic conditions. At pH 4 and 298 K, the maximum experimentally observed equilibrium uptake reached 1267.35 mg·g −1 at high initial concentration, and removal efficiencies approached 99% under the tested conditions. The adsorbent retained more than 95% of its initial removal performance after five regeneration cycles. Kinetic and equilibrium analyses, together with FTIR/XPS and post-adsorption characterization, support that uptake involves Fe-associated interactions, electrostatic effects, and hydrogen bonding, with additional high-coverage accumulation contributing at elevated concentrations. Overall, this work demonstrates a practical route to valorize anaerobic digestate into a reusable adsorbent for removing azo dyes from wastewater. Graphical Valorizing anaerobic digestate into a magnetically recoverable Fe-C adsorbent enables efficient Congo red removal: near-complete decolorization at pH 4, 298 K, maximum observed q e 1267.35 mg·g −1 , and > 95% performance after 5 cycles. A single-step, low-temperature process offers a scalable, low-cost wastewater solution.
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PubMed
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Chenyang Sun,Yi Yu,Yuqian Lu,Fengchao Wang,Jifeng Liu,Wanying Zhai,Xia Gao
The integration of detection and degradation capabilities within a single material presents a promising strategy for the management of antibiotic pollutants. Herein, a multifunctional graphitic carbon nitride (g-C3N4)-coupled metal–organic framework (MOF) nanocomposite (denoted as g-C3N4/MIL101) was designed as an all-in-one platform for the sensitive detection and efficient removal of tetracycline antibiotics (TCs). The material architecture combines a Z-scheme heterojunction for enhanced photo-Fenton activity, with Fe3+ sites that serve as specific recognition centers for TCs. This dual design enables the nanocomposite to function as a highly selective colorimetric sensor array, achieving simultaneous discrimination of multiple TCs and non-TC antibiotics. Furthermore, the specific coordination between Fe sites and TCs not only facilitates sensing but also promotes the subsequent degradation by preconcentrating the targets near catalytic centers. Under visible light, the system demonstrates efficient TC degradation with minimized energy and H2O2 input, driven by the enhanced charge separation of the Z-scheme heterojunction and the Fe-mediated Fenton-like process. Theoretical calculations confirm the Fe-node-mediated specific coordination toward TCs, as well as the reduced activation energy for O2 and H2O2 activation of this platform. This work provides a feasible design strategy for multifunctional coordination polymers in advanced environmental applications.
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Ji Luo,Feiying Yin,Yuan Liang,Yuting Ye,Shihui Xiao,Jianfeng Guo,Jianhui Xiang,Guanhua Li,Xin Yang,Jiejia Deng,Junxu Yang,Zhengtian Li,Jinmin Zhao,Li Zheng,Kelong Fan,Jingping Zhong
Ferroptosis, driven by redox imbalance, plays a critical role in osteoarthritis (OA) progression. Although antioxidant nanozymes hold therapeutic potential, designing highly efficient and targeted systems to inhibit ferroptosis remains challenging. Here, we developed a 2D nitrogen-doped graphene-like nanomesh (NGM) loaded with asymmetric and highly exposed Fe single atoms, carried with the cartilage-targeting WYRGRL peptide and siRNA (siMMP13) to form Fe SAzymes (si-FeSA/NGM-W) as ferroptosis inhibitors to alleviate OA. By mixed molten salt and Zn removal, exfoliating Zn-ZIF into an ultrathin 2D hierarchical porous NGM with topological defects and hierarchical structure, we created a scaffold for anchoring asymmetric and highly exposed Fe single atoms. The abundant Fe-N 4 -Cl coordination active sites then introduce strain and defects, which facilitate electron transfer, enhance radical adsorption, and lower reaction barriers, thereby augmenting multi-enzyme (SOD/CAT/GPx) activities. This enables the functionalized si-FeSA/NGM-W to target cartilage, where it inhibits ferroptosis by downregulating MMP13, upregulating GPX4, restoring mitochondrial function, and modulating inflammation, ultimately achieving targeted OA therapy. Mechanistically, this process involves suppression of the IL-17 pathway and enhancement of glutathione metabolism. This work presents a targeted nanozyme platform for precise OA therapy via ferroptosis inhibition.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jian Wang,Chengliang Zhao,Fang Wang,Lei Xie,Chong Tan,Zigui Luo,Haibo Sun,Chuntao Chang
This work presents the fabrication of low-loss, high-permeability Fe-Si soft magnetic composites (SMCs) utilizing alumina-coated and subsequently annealed Fe-Si powder. Appropriate annealing preserves a uniform, dense, and continuous alumina insulating layer, enabling optimization of the magnetic properties through powder annealing. The optimal annealing duration for Fe-Si SMCs was identified as 180 min, yielding a minimum core loss of 259.1 mW/cm 3 and a peak permeability of 94.85 (measured at 50 mT/100 kHz). The observed reduction in hysteresis loss arises from the combined influence of grain growth and stress relaxation during the annealing process. A uniform insulating layer effectively restricts induced eddy currents to individual powder particles, thereby minimizing eddy current losses. However, prolonged annealing compromises the coating’s structural integrity, resulting in a decline in magnetic performance. This work introduces a systematic strategy for enhancing the overall magnetic properties of SMCs by precisely controlling the annealing time of the powders, establishing a distinct correlation between coating evolution and composite performance. These insights provide practical direction for the high-efficiency deployment of soft magnetic composites in high-frequency magnetic applications.
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高影响因子
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.
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