MOLECULES
·
2025
·Vol. 30
·期 13
·2725
·
IF 4.6
Yan Xiao,Yi Zhang,Zhigui He,Liwen Zhang,Tongfei Wang,Tingfan Tang,Jiaxing Chen,Hao Cheng
Overuse of tert-butylhydroquinone (TBHQ) as a food antioxidant has the potential to pollute the environment and threaten human health. Therefore, it is imperative to develop precise and rapid methods to detect TBHQ in food products. In this study, Fe- and Mn-doped Prussian blue analogs (FeMn-PBAs) were prepared by co-precipitation, FeMn-PBAs/PAN was prepared by electrostatic spinning, and a novel FeMn@C/CNFs composite was prepared by carbonization in nitrogen. Bimetallic FeMn doping has been shown to reduce vacancy defects and enhance the structural stability of PBA. Furthermore, electrostatic spinning has been demonstrated to reduce the agglomeration of PBA nanoparticles, which are electrode-modifying materials with high stability and good electrical conductivity. The morphological and structural characteristics of the FeMn@C/CNF composites were examined using scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of tert-butyl hydroquinone in FeMn@C/CNFs was studied by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and chronocoulometry (CC). The results demonstrate that the sensor exhibits excellent repeatability, reproducibility, and anti-interference capabilities. The prepared electrochemical sensor can be effectively utilized for the detection of TBHQ in food samples such as soybean and peanut oil samples, proving its strong potential for practical applications.
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DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Junhao Huang,Ruixue Shi,Andrei Ivanets,Alexander A. Ratko,Tatyana Kouznetsova,Haixin Wu,Xintai Su
Hexavalent chromium (Cr(VI)) contamination in water poses a significant threat to human health. In this work, Fe and N co-doped biochar (Fe-N-C) was fabricated from municipal sludge using urea as a nitrogen source via the acidification-one-step pyrolysis method. This approach overcame the low adsorption capacity of self-carbonated sludge and achieved high Cr(VI) removal efficiency. Batch experiments and characterization techniques were employed to investigate the synthesis mechanism of Fe-N-C and its Cr(VI) removal mechanisms. At a urea/sludge mass ratio of 0.5, Fe-N-C-0.5 demonstrated superior Cr(VI) adsorption capacity (205.92 mg g⁻¹), primarily governed by spontaneous monolayer chemisorption and intraparticle diffusion. The adsorption process was unaffected by coexisting ions, and it exhibited excellent regeneration stability as well as substantial potential for practical applications. In addition, Fe-N-C-0.5 exhibited high biosafety before and after Cr(VI) removal. Urea doping facilitated nitrogen incorporation and anchored free Fe³⁺, forming the Fe-N-C structure that promoted the transformation of Cr(VI) to Cr(III) through electrostatic adsorption, reduction, and cation-π interactions. These results suggest Fe-N-C is an effective adsorbent for Cr(VI)-contaminated wastewater treatment.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Chaoqi Han,Ming Chen,Wenwen Shi,Ruimin Ding,Junliang Zhang,Xi Yin
Water (H 2 O) management limitations within the cathode catalyst layer (CCL), particularly for precious-metal-free metal/nitrogen-doped carbon (M-N-C) catalysts, severely constrain the performance of anion-exchange membrane fuel cells (AEMFCs). To address this challenge, we implement precision pore-structure engineering at the catalyst-intrinsic level. Three hierarchically porous FeCo-N-C catalysts were synthesized, enabling the fabrication of CCLs with tailored pore architectures. The CCL prepared from the macroporous-open catalyst (o-CCL) exhibits an optimized pore structure, characterized by a restructured distribution of hydrophilic hierarchical pores along with a high porosity of 54.7% and a low tortuosity of 1.61. Simulations and experimental measurements collectively confirm that the optimized o-CCL achieves improved H 2 O distribution, enhanced gas-liquid flow velocity, and reduced oxygen (O 2 ) transport resistance. These structural advantages collectively lead to a notable improvement in AEMFC performance. The o-CCL, with an electrode area of 5 cm 2 , achieves peak power densities of 684 mW cm −2 in H 2 /air and 1153 mW cm −2 in H 2 /O 2 . This study demonstrates that pore-structure engineering at the catalyst particle level offers a viable strategy to alleviate the H 2 O-O 2 transport conflict in AEMFCs and improve overall cell performance.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Mingli Yue,Zhikuan Feng,Long Gao,Ying Fu,Fei Ye
Drug delivery systems utilize micro-nanomaterials as drug carriers, encapsulating drugs within micro-nanoparticles and releasing them to target tissues or cells via specific pathways. This technology enhances drug stability, prolongs drug retention time in the body, and reduces damage to healthy tissues. This study successfully synthesized novel carbon-doped zinc oxide (C/ZnO) micro-nanomaterials and employed polydopamine (PDA) for surface modification, resulting in the construction of C/ZnO/PDA carriers. Experimental results demonstrate that PDA modification significantly enhances the drug delivery performance of the material. This composite material exhibits a 5-Fu loading efficiency of 37.8%, representing a 1.15-fold increase compared to unmodified C/ZnO. In vitro release tests demonstrate sustained drug release characteristics, showing a 1.62-fold increase over the unmodified system. In addition, these medicine particles significantly enhanced the indicators of antibacterial and bactericidal efficacy. In vitro cell experiments also confirmed that the drug carrier can enhance the lethality of the drug against HepG2 cells. Research on the binding energy between the carrier and the drug revealed that PDA modification promotes drug-carrier binding, resulting in more stable overall adsorption. These findings demonstrate the potential application value of micro-nanoparticle-based targeted drug delivery systems in disease prevention and treatment.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Yaoxia Yang,Bolin Xiong,Dangxia Wang,Zhen Yao,Wei Zeng,Dongfei Sun
Electrocatalytic water decomposition is a sustainable method for producing hydrogen, but its application is hindered by the slow kinetics of the anodic reaction. The development of cost-effective electrocatalysts is key to realizing efficient water splitting for hydrogen production. In this study, a technique was proposed for synthesizing vanadium-modulated carbon-coated CoFeP nanoparticles (V-CoFeP@C) using cobalt-iron prussian blue analogues (CoFe PBAs) as templates. The experimental results demonstrated that the unique heterostructure of V-CoFeP@C provided abundant active sites and a large specific surface area (33.047 m2 g−1). In a 1.0 M KOH solution, the OER overpotential was 265 mV and the Tafel slope was 57.15 mV dec−1 at a current density of 10 mA cm−2. The introduction of V, endowed with unique intrinsic properties (multivalent states, matched ionic radius, and high Lewis acidity), modulated the electronic structure, increased the density of active sites, and transformed Co and Fe ions to higher oxidation states. This not only enhanced the catalytic performance but also enabled the catalyst to exhibit excellent OER activity. Additionally, V-CoFeP@C showed good stability, maintaining long-term operation at a current density of 10 mA cm−2. This work provides a valuable reference for enhancing the stability of heterojunction electrocatalysts and optimizing trimetal nanostructures.
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高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Zuopeng Li,Yong Guo,Zhen Liu,Xin Wu,Jianhuang Zeng,Zhaohui Hou,Wuyi Zhou,Shijun Liao
Aimed at high Pt utilization efficiency and stability, Pt/TiO 2 @Ru-C electrocatalysts have been prepared by a two-stage modified polyol process, in which ruthenium nanoparticles are dotted on TiO 2 nano-bricks to form TiO 2 @Ru in the first stage, followed by deposition of platinum nanoparticles on either the in-situ formed TiO 2 @Ru or carbon black in the second stage. The electrocatalysts have been characterized by Transmission Electron Microscopy, X-ray Diffraction and Thermogravimetric analysis. The electrochemical surface area of the Pt/TiO 2 @Ru-C is 82.9 m 2 g −1 and remains to as high as 44.8 m 2 g −1 in an accelerated stability test. Catalytic activity towards methanol oxidation reaction of the catalyst in 0.5 M CH 3 OH + 0.5 M H 2 SO 4 at room temperature is found to be 487 A g −1 . TiO 2 nano-bricks are wedged in between the interfaces of carbon particles creating interpenetrated TiO 2 -Pt-C network, making them easily accessible to fuel cell reactions. Meanwhile, the interpenetrated TiO 2 prevent the electrocatalyst from agglomeration, leading to high Pt efficiency as well as durability.
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高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2021
·
IF 3.935
Yaru Xing,Bing Zhao,Lin Yin,Mingquan Guo,Huichun Shi,Zhaoqin Zhu,Lin Zhang,Juan He,Yun Ling,Menglu Gao,Hongzhou Lu,Enqiang Mao,Lijun Zhang
To administer vitamin C (VC) with precision to patients with the coronavirus disease (COVID-19), we developed an ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method to assess plasma VC concentrations. 31 patients with COVID-19 and 51 healthy volunteers were enrolled. VC stability was evaluated in blood, plasma, and precipitant-containing stabilizers. A proportion of 7.7 % of VC was degraded in blood at room temperature (RT) (approximately 20–25 °C) at 1.5 h post administration with respect to the proportion degraded at 0.5 h, but without statistical difference. VC was stable in plasma for 0.75 h at RT, 2 h at 4 °C, 5 days at −40 °C, and 4 h in precipitant-containing stabilizer (2 % oxalic acid) at RT. The mean plasma concentration of VC in patients with COVID-19 was 2.00 mg/L (0.5–4.90) (n = 8), which was almost 5-fold lower than that in healthy volunteers (9.23 mg/L (3.09. 35.30)) (n = 51). After high-dose VC treatment, the mean VC concentration increased to 13.46 mg/L (3.93. 34.70) (n = 36), higher than that in healthy volunteers, and was within the normal range (6–20 mg/L). In summary, we developed a simple UPLC-MS/MS method to quantify VC in plasma, and determined the duration for which the sample remained stable. VC levels in patients with COVID-19 were considerably low, and supplementation at 100 mg/kg/day is considered highly essential.
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高影响因子
RSC Advances
·
2016
·Vol. 6
·期 93
·90797-90805
·
IF 3.289
Jingjing Xi,Fang Wang,Riguo Mei,Zhijie Gong,Xianping Fan,Hui Yang,Liang An,Qixing Wu,Zhongkuan Luo
In this work, a graphene supported Fe–N–C composite catalyst, synthesized by pyrolysis of graphene oxide (GO), graphitic carbon nitride (g-C3N4), ferric chloride (FeCl3) and carbon black (Vulcan XC-72), was evaluated for oxygen reduction reaction (ORR) in acid media. The introduction of carbon black was to separate the graphene sheets to enhance the specific surface area and thus improve the catalytic activity of the catalyst. The experimental results showed that the composite catalyst could yield an average electron transfer number of 3.85 and its onset and half-wave potentials for acidic ORR were only 56 and 69 mV smaller than those of Pt/C (40 wt% Pt) catalyst, respectively. The as-prepared catalyst was applied in an acid direct methanol fuel cell as the cathode catalyst and a peak power density of 11.72 mW cm−2 at 30 °C was demonstrated when feeding the anode and cathode with a 1 M methanol solution and air, respectively, suggesting its promising application.
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高影响因子
JOURNAL OF MATERIALS CHEMISTRY
·
2012
·Vol. 22
·期 37
·19718-19725
·
IF 5.968
Xiao Zhao,Jianbing Zhu,Liang Liang,Jianhui Liao,Changpeng Liu,Wei Xing
The development of advanced support materials displays the potential for both reducing the cost and simultaneously increasing the activity of catalysts. In the current work, a novel N-doped carbon coated hydrophilic titanium dioxide (TiO2@N-doped C) nano-composite, constructed by the procedure of an in situ polymerization and subsequent pyrolysis, was utilized to support Pt nano-crystals for the methanol oxidation reaction (MOR). The as-prepared Pt/TiO2@N-doped C catalyst generated 1.74-fold higher activity, 2.08-fold higher stability and much better resistance to CO poisoning than a commercial state-of-the-art Pt/C catalyst. The enhanced catalytic performance was ascribed to the improved CO tolerance and the catalyst–support interaction due to the utilization of the TiO2@N-doped C nano-composite, which not only provides rich active –OH groups to promote CO oxidation via the bifunctional mechanism, but also modifies the electronic structure of the Pt NPs to improve the intrinsic kinetics of MOR. The as-developed TiO2@N-doped C nano-composite is a highly promising catalyst support material for use in fuel cell technology.
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高影响因子
ENERGY & FUELS
·
2026
·
IF 5.3
Chuang Zhang,Yue Wang,Xin Hu,Wei Jiang,Xiao-Yan Zhao,Chen Xu Chen,Wen Li,Jing-Pei Cao
Selective hydrogenolysis of C–O bonds in lignin is widely regarded as the most promising strategy for generating high-value chemicals and clean liquid fuels. Ni–Ru bimetallic catalyst supported on solid superacid was successfully synthesized and applied to the cleavage of C–O bonds in diphenyl ether (DPE) and alkali lignin. The catalytic hydrogenolysis of DPE over a 10%Ni–0.5%Ru–S2O82–/ZrO2 catalyst produced 88.0% cyclohexanol. Additionally, 10%Ni–0.5%Ru–S2O82–/ZrO2 catalyzed the depolymerization of alkali lignin in high yields of phenolic compounds, primarily including guaiacol and methoxyphenol. The synergistic effect between Ni and Ru promoted electron transfer from Ni to Ru. The incorporation of Ru improved the dispersion of Ni and reduced the average particle size of metallic Ni. The strong acidity of the solid superacid support provided abundant acidic sites, facilitating hydrogen atom adsorption and thereby promoting C–O bonds cleavage.
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高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Yuechi Che,Tianxiao Yu,Ying Bai,Ziwei Xue,Beibei Yan,Xuemei Fu,Jian Li,Guanyi Chen
Microwave steam reforming using carbon-based catalyst presents a promising solution for tar elimination in biomass gasification, crucial for renewable syngas production toward heating, electricity, and value-added chemicals. However, activated-steam-induced catalyst deactivation remains challenging. Herein, a ZIF-67-derived core-shell Co/C-TiO 2 catalyst was engineered via tailored TiO 2 hydrophilicity and structural protection. Catalytic performance exhibited a volcano-type trend versus TiO 2 shell thickness. The optimal catalyst (Co/C-T2) achieves a 96.62 % toluene conversion rate and a 72.17 % carbon conversion rate at 550 °C, sustaining >87.61 % efficiency over 6 h. Structural characterizations revealed the core-shell architecture transformed carbon-supported Co(111) structure into anatase TiO 2 (101)-stabilized Co 3 O 4 (311) configuration, significantly enhancing surface basicity and oxygen species density. DFT-based molecular dynamics simulations further elucidated the mechanism by demonstrating reduced adsorption and dissociation energy barriers for H 2 O molecules, which facilitate steam activation in the reforming process. However, excessive TiO 2 coating induces diffusion limitations at the reactant/metal active site interface, coupled with coking-induced pore occlusion, consequently triggering significant deterioration in catalytic activity and stability. This work establishes a facile modification paradigm for developing microwave-responsive carbon catalysts while providing fundamental insights into the structure-activity relationships of core-shell systems in heterogeneous catalysis. These findings offer practical guidance for designing advanced catalysts in sustainable energy conversion applications.
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高影响因子
COLLOID AND POLYMER SCIENCE
·
2026
·
IF 2.9
Wei Zeyu,Li Xinxin,Xu Zixiang,Fan Zhen,Li Yuzeng,Feng Zhenyu,Li Qinran,Zhang Hongfeng,Deng Qiliang
N-terminal epitope-imprinted temperature-sensitive polymer on silica particle was prepared using a reversible addition-fragmentation chain transfer (RAFT) strategy, with the N-terminal nonapeptide of cytochrome c as template. 2-Dodecylsulfanylcarbothioylsulfanyl-2-methylpropionic acid (DMP) was used as a chain transfer agent to regulate the polymerization of the imprinted layer, thereby enhancing the recognition performance for the peptide and target protein. After the epitope modification, a surface-imprinted polymer with a controlled imprinted layer was synthesized using monomers and crosslinkers via the RAFT radical polymerization method. As the classic temperature-sensitive functional monomer, the addition of N-isopropylacrylamide imparts temperature-responsive properties to the prepared imprinted polymer. After optimizing the ratio of functional monomers and the recognition temperature, the imprinted particles achieve optimal adsorption capacity and imprinting factor (IF) at a recognition temperature of 45 °C. The highest adsorption capacity for GI-9 is 1.50 mg/g, with an IF of 2.33, while the maximum adsorption capacity for Cyt c reaches 8.39 mg/g, with an IF of 2.16, which were clearly higher than the IF of the material without the RAFT strategy. Furthermore, the temperature-sensitive imprinted polymers exhibit acceptable binding capacity and IF for Cyt c, enabling selective recognition within multi-protein mixtures. The protein recognition performance remained at approximately 89.3% after five adsorption-desorption cycles, with almost no decrease of IF. All these results indicate that the imprinted particles exhibit acceptable selectivity, good reusability, and sensitivity to recognition temperature conditions. It is expected to be further applied in the selective recognition and controlled release of target proteins.
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高影响因子
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