MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-16
·
IF 5.3
Yan Ruixue,Guo Hao,Yang Zeyun,Niu Wenting,Yan Yu,Ma Jianpeng,Wang Mingyue,Yang Wu
A sensitive electrochemical sensor was constructed for tyrosine detection by collaborating a highly conductivity, excellent electrocatalysis and large surface of nitrogen-rich porous covalent organic framework in situ grown on three-dimensional conductive carboxylated multi-walled carbon nanotubes network and catalytic activity of triangular silver nanosheets. The prepared electrochemical sensing platform exhibited satisfactory results for detection of tyrosine with a wide linear range of 0.6–280 μM and a low detection limit of 0.017 μM, which were significantly superior to those of most existing electrochemical methods. At the same time, the developed sensor was successfully applied to the detection of tyrosine in real samples including human serum and urine and displayed high recoveries, good stability, reproducibility, and anti-interference ability. This study not only provides a novel sensing platform for tyrosine monitoring but also offers an innovative design concept for leveraging multifunctional nanocomposites in biosensing applications. Graphical
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高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-9
·
IF 5.3
Yang Yufan,Zhao Bo,Hu Xiaopeng,Gu Huiwen,Yan Xiu-Fang,Yin Xiaoli
A dual-mode fluorescent/colorimetric sensor is presented utilizing Au/ZIF-67 nanocomposites for an ultrasensitive ochratoxin A (OTA) detection. The system employs polydopamine-coated Fe 3 O 4 nanoparticles (Fe 3 O 4 @MIP) as magnetic recognition elements and aptamer/3,3′,5,5′-tetramethylbenzidine (TMB)-functionalized Au/ZIF-67 nanocomposites (Apt/TMB/Au/ZIF-67) as dual-signal probes for both fluorescence and colorimetric detection. Through molecular imprinting-aptamer synergistic recognition, OTA binding induces the formation of sandwich-structured particles (Fe 3 O 4 @MIP-OTA-Apt/TMB/Au/ZIF-67). Magnetic separation of these particles facilitates fluorescence measurements, while residual Apt/TMB/Au/ZIF-67 in solution permits simultaneous colorimetric detection. Crucially, fluorescence intensity increases while colorimetric absorption decreases proportionally with OTA concentration (0.5–25 ng mL⁻ 1 ), enabling self-validating dual-mode detection without requiring reagent replacement. The platform achieves detection limits of 0.15 ng mL⁻ 1 (fluorescence) and 0.13 ng mL⁻ 1 (colorimetry). The sensor was successfully validated for OTA quantification in real food samples, demonstrating significant potential for food safety applications. Graphical
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高影响因子
CELLULOSE
·
2025
·
IF 4.8
Zhang Qi,Meng Huibiao,Shi Yonggen,Shao Linjun,Xing Guiying,Zhang Xianman
The efficient adsorption of precious palladium metal ions from industrial wastewater is crucial for both reducing environmental pollution and recycling valuable palladium resources. In this research, a combination of electrospinning and annealing treatment was employed to fabricate low-cost and stable silica gel incorporated chitosan composite nanofibers, which were served as an efficient adsorbent for adsorbing Pd 2+ ions from aqueous solution. The fiber morphology was analyzed by scanning electron microscopy (SEM). Brunauer–Emmett–Teller (BET) analysis and positron annihilation lifetime spectroscopy (PALS) were employed to analyze the microstructure. The surface area of composite nanofibers reaches the maximum of 81.46 m 2 /g with 23.1% loading of silica gel. These fiber adsorbents were used to adsorb the Pd 2+ ions in aqueous solution and the related factors of silica gel content, the annealing temperature and the adsorption parameters (e.g. adsorption time, solution pH, and initial Pd 2+ concentration) were investigated and optimized. The adsorption results demonstrate that the unique fibrous structure and the incorporation of silica gel significantly enhance the adsorption efficiency for Pd 2+ ions with a maximum adsorption capacity of ~ 113 mg/g. The adsorption mechanism analysis reveals the involvement of chelation and electrostatic interaction between the amino groups in chitosan and Pd 2+ ions. Thermodynamic analysis indicates that the adsorption process is endothermic and spontaneous with ΔH 0 and ΔS 0 values of − 26.59 kJ/mol and 96.02 J/mol K, respectively. Moreover, the fibrous adsorbent exhibits outstanding recyclability, retaining 85.2% of its initial adsorption capacity after five successive reuse cycles. In conclusion, this low-cost and high-performance fibrous adsorbent holds great potential for the efficient separation and recovery of precious Pd 2+ ions from industrial wastewater.
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PLANT CELL REPORTS
·
2025
·Vol. 44
·期 8
·1-15
·
IF 4.5
Huang Junjun,Wang Luyu,Jia Ziyu,Cheng Kunxia,Han Rongzhi,Yu Juanjuan,Wang Huahua
Key message Cytosolic G6PDH contributes to soybean tolerance to heavy metal exposure by alleviating oxidative damage, and in this process, nitric oxide may act upstream of cytosolic G6PDH. Heavy metal (HM) pollution in soil significantly impairs agricultural production and represents a substantial risk to food security. However, the underlying mechanism by which glucose-6-phosphate dehydrogenase (G6PDH or G6PD, EC 1.1.1.49) alleviates HM toxicity needs further clarification. In this study, the role of G6PDH in mitigating the toxicity of HMs (chromium, cadmium, copper, lead, and mercury) was examined in soybean ( Glycine max L.) using pharmacological and transgenic approaches. The findings indicate that the enhanced G6PDH activity observed during HM exposure was attributable to cytosolic G6PDH induction. HM stress induced the expression of cytosolic G6PDH genes ( GmG6PD6 , GmG6PD7 , and GmG6PD8 ), particularly GmG6PD7 . Overexpression of GmG6PD7 in soybean hairy roots enhanced G6PDH activity and HM tolerance. The addition of a G6PDH inhibitor during HM exposure markedly reduced the levels of NADPH, ascorbic acid (ASA), and reduced glutathione (GSH) in soybean roots, thereby exacerbating oxidative damage. In contrast, overexpression of GmG6PD7 significantly increased the contents of NADPH, ASA, and GSH in transgenic soybean roots under HM exposure, thereby alleviating oxidative damage. Furthermore, nitric oxide (NO) stimulated an elevation in cytosolic G6PDH activity and GmG6PD7 expression under HM exposure. Notably, G6PDH demonstrated comparable functionality in response to all five HMs examined. In summary, the NO-mediated induction of cytosolic G6PDH enhances soybean resistance to HM exposure through strengthening the antioxidant defense system.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
Liu Xinying,Lei Yuhan,Shi Jialin,Wang Zixuan,Zhang Wenxiu,Zhang Guanghui,Gu Ping
A novel adsorbent, Mn-MOF-74, was synthesized using a room-temperature, water-based method by assembling Mn 2+ metal nodes with 2,5-dihydroxyterephthalic acid ligands, and was further applied for Co 2+ removal. Mn-MOF-74 exhibited minimal pH dependence within a pH range of 3–8.5, achieving Co 2+ removal efficiencies between 92.5 and 96.3%, with a distribution coefficient of up to 2.9 × 10 4 mL·g −1 . A function relationship between the Co 2+ removal efficiency and the adsorbent dosage or initial concentration was proposed. The dominant removal mechanism was identified as ion exchange between Mn 2+ and Co 2+ , with chemisorption being the primary rate-limiting step.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 4
·1176-1185
·
IF 1.1
Hu Zhengsheng,Tang Xu,Gao Shilong,Li Yingguang,Wang Jiawei,Chen Yanjun,Wang Yifeng
Modified activated carbons (AS) were fabricated through the oxidation effect of ammonium persulfate and applied to the dynamic adsorption of different acrylate gas. The pore structures, surface chemical properties and surface morphology of AS were respectively characterized by N 2 adsorption, Boehm titration, X-ray Photoelectron Spectroscopy (XPS) and scanning electron microscopy (SEM) techniques. After modification, the specific surface area increased from 954 to 1 154 m 2 ·g −1 . The contents of oxygen-containing functional groups on the AS surface increase obviously and have a great effect on the adsorption behavior of acrylate gases. According to the results of dynamic adsorption, the adsorption capacities of acrylates are as the following order: methyl acrylate (461.9 mg·g −1 ) > methyl methacrylate (436.9 mg·g −1 ) > butyl acrylate (381.8 mg·g −1 ), which is attributed to the size adaptability of AS pores and acrylates. The adsorption behavior of AS for acrylate gases conforms to the Bangham model and the Temkin model.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 8
·1-12
·
IF 5.3
Dong Zong-Mu,Qin Liming,Guo Yaqing,Xu Miaoqing,Wu Jian-Feng,Zhao Guang-Chao
A mesoporous surface benzonitrile functionalized covalent organic framework (TpBD-CN-COF) was synthesized as a novel solid-phase microextraction (SPME) fiber coating for the extraction of six hydroxyphenyl esters (PBs), and combined with gas chromatography-flame electric-ion detector (GC-FID). PBs were sensitively determined in aqueous solution. Due to its high specific surface area, high chemical stability in both strongly acidic and alkaline media, and in polar or non-polar media, as well as its high thermal stability, the TpBD-CN-COF fiber coating showed excellent extraction performances for PBs with an enrichment factor twice as high as that of TpBD-COF. Some parameters that influenced the extraction performance, such as extraction time and temperature, pH, and stirring speed were investigated. Under optimal conditions, a wide linear range (0.06–500 μg L −1 ), low limits of detection (LOD, 0.003–0.042 μg L −1 ) were obtained for PBs determination. The relative standard deviations (RSDs, n = 6) for intra-day, inter-day, and fiber-to-fiber were less than 8.06%, 7.8%, and 8.6%, respectively. Furthermore, the analytical method could be successfully used to detect six PBs in cosmetics and environmental water samples, achieving satisfactory recoveries ranging from 85.14 to 107.67%. Graphical
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高影响因子
CELLULOSE
·
2025
·
IF 4.8
Zhao Feiyang,Liu Huijuan,Jin Yilin,Ru Hongfu,Wang Longfei,Xiang Shuangfei,Li Hao,Zhao Shujun,Fu Feiya,Camilleri Ing. Duncan,Liu Xiangdong
The application range of rice straw (RS) is limited by its poor flame and water resistance. It’s still a great challenge to endow RS fibers with excellent flame and water resistance properties without compromising the intrinsic mechanical properties. Here, a simple surface treatment strategy of RS fibers via co-treatment with phytic acid (PA) and calcium chloride (CaCl 2 ) was developed. First, PA was grafted onto RS fibers by esterification reaction. Then RS fibers were ionically crosslinked by CaCl 2 treatment. Modified RS fibers (PCRS) were then mixed with unsaturated polyester resin (UPR) to produce PCRS/UPR composites (PCRU). Benefiting from Ca 2+ complexes via the ionic crosslinking between Ca 2+ and –P (=O)–OH of the PA, –OH of the RS fibers, PCRU demonstrates enhanced tensile strength (12.04 MPa), good waterproofing capability, and flame-retardant performance. PCRU exhibites low water absorption rate (5.90%) and dimensional stability (thickness deformation less than 1.76%) after 168 h of water immersion. In addition, the limiting oxygen index and the total heat release of the prepared PCRU composites are 29.7 and 11.3 kJ/g, which reach the standard for flame retardant materials. Therefore, this study provides a simple and green pretreatment strategy of rice straw fiber for the applications in flame retardant, low water absorption, and dimensionally stable composites. Graphical
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WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 10
·1-13
·
IF 3
Li Yuan,Fan Jun,Huang Bingyao,Li Hongyan,Zhao Jie,Li Kai,Wang Fei
Removal of PH 3 from industrial gases have attracted extensive attention due to its high toxicity and catalyst poisoning characteristics. In this study, a series of copper-based support-free catalysts were synthesized by a facile method using different nitrogen and carbon sources. The 100% removal of PH 3 could reach 540 min in micro-oxygen environment by using the obtained catalyst. The X-ray diffractometer (XRD) and X-ray photoelectron spectroscopy (XPS) results exhibited that the formation of Cu 3 P was contributed to the deactivation of the catalysts, which was considered as active component for the decomposition of PH 3 . The PH 3 decomposition performance could achieve 99% under 450 ℃ with 90% yield of H 2 using the exhausted catalysts. This strategy is beneficial for the development of dephosphorization catalyst and provides a new route for the secondary use of exhausted catalysts. Graphical A facile strategy was employed for synthesize support-free catalysts for PH3 oxidation by using Cu(NO3)2 and different nitrogen resources or carbon resource. The performance were thoroughly compared. The exhausted catalyst was conducted in the PH3 catalytic dissociation reaction, where the conversion rate of PH3 could reach 99% with 90% hydrogen production under 450 ℃.
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WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 11
·1-17
·
IF 3
Yang Yangyang,Chen Qi,Wang Xiao,Hou Jun,Ren Lingxiao,Fan Xiulei,Liu Qiang,Liu Jiaqiang,Xu Ke,You Guoxiang
Microplastics (MPs) act as vectors for antibiotics in aquatic environments; however, their adsorption capacities, influenced by their color and the concentration of algal organic matter (AOM) in water, remain poorly understood. Herein, black tire wear particles (B-TWPs) and white polyethylene (W-PE) MPs were selected as model MPs. To accurately compare property differences between the two MP types in water environments, MPs particles subjected to ultraviolet aging (30 w) in ultrapure water, water with 5 mg/L AOM, and freshwater were analyzed. Further, changes in the structure, functional groups, and adsorption–desorption behaviors of tetracycline hydrochloride (TCH) on these MPs were studied. Results revealed that the hydrophilic properties of both the MPs developed with oxygen-containing functional groups, which enhanced their adsorption capacity after aging. AOM inhibited the aging extent of B-TWPs and W-PE MPs, with B-TWPs exhibiting a greater degree of aging than W-PE. These alterations substantially influenced the adsorption–desorption behavior of TCH, as confirmed by adsorption and desorption kinetic studies. The adsorption process of aged B-TWPs and W-PE MPs in the presence of AOM was best described by a second-order kinetic model (R 2 > 0.97). The isothermal adsorption results confirmed that the Freundlich model better described the adsorption of antibiotics on the MPs with and without AOM present (R 2 > 0.98). This study is the first to underscore the critical role of AOM in the aging of MPs with different colors. AOM modifies the adsorption and desorption behaviors of co-occurring antibiotics in the environment.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 19
·1-15
·
IF 2.8
Li Zi-Yan,Li Ya-Jun,Li Wei,Wang Ze-Hong,Zhao Zhao-Ye,Zhou Ting-Ting,Huang Yi-Rui,Wu Xiang-Feng,Zhang Peng-Liang,Zhen Zi-Yan,Ci Li-Jie
In this study, a photoelectrochemical sensor for the detection of glucose was developed by combining the unique properties of NH 2 -MIL-125 and Ti 3 C 2 film. The relationship between the microstructure of the samples and their performance in glucose detection was investigated. Experimental results demonstrated a linear decrease in the differential pulse voltammetry current of the Ti 3 C 2 /NH 2 -MIL-125-3 photoelectrochemical sensor with increasing glucose concentration. Below 200 μM, the relationship between DPV current and glucose concentration was found to be: I (mA) = − 3.86667 × 10 –8 ·c g (μM) + 3.66 × 10 –4 (c g denoted as the concentration of glucose). Above 200 μM, the relationship was: I (mA) = − 4.03049 × 10 –8 ·c g (μM) + 3.68268 × 10 –4 . Density functional theory calculations were in agreement with the experimental data. The Ti 3 C 2 /NH 2 -MIL-125-3 photoelectrochemical sensor demonstrates exceptional glucose detection capability. This technology has the potential to advance the development of MXenes/MOFs-based photoelectrochemical biosensors.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 21
·1-13
·
IF 2.8
Sun Li,Wang Shuimiao,Bai Yuehao,Li Guang,Tao Yong,Wang Wei,Yang ChangAn
Lithium–sulfur (Li–S) batteries have garnered significant research interest owing to their exceptional theoretical energy density, coupled with the cost-effectiveness and environmental sustainability inherent in sulfur-based cathode materials. Nevertheless, the practical implementation of these systems remains impeded by challenges, such as the shuttle effect of soluble lithium polysulfide intermediates during cycling, which contributes to rapid capacity degradation and suboptimal electrochemical performance in current Li–S configurations. Herein, a sulfur-containing composite, S@V 2 O 5 /KB, was synthesized using a straightforward high-temperature melt synthesis method. The V 2 O 5 /KB composite was obtained by mixing vanadium pentoxide (V 2 O 5 ) and Ketjen black (KB) through a simple ultrasonic process, followed by high-temperature melting to yield the sulfur-containing composite, S@V 2 O 5 /KB. Constant current discharge tests demonstrated that the addition of KB as a conductive agent significantly improved the performance of the battery. The optimal performance was achieved when the mass ratio of V 2 O 5 to KB was 2:1. After 100 cycles at a rate of 0.5C, the capacity of 678.3 mA h g −1 was retained, resulting in a capacity retention rate of 71.67%.
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