NANOTECHNOLOGY
·
2025
·Vol. 36
·期 38
·385302
·
IF 2.8
Zhongqiang Min,Qifeng Chen,Xuchao Chen
In this study, L-His-N-carbon quantum dots (CQDs) were synthesized via a microwave-assisted method using homemade hardwood cellulose with a dryness of 20% as the carbon source and L-histidine as the nitrogen source. The results demonstrated that when the mass ratio of cellulose to L-histidine was 1:5 and the reaction time was 40 min, the L-His-N-CQDs exhibited the highest fluorescence quantum yield of 22.43%. A series of characterizations revealed their superior fluorescence performance and uniform size distribution. Subsequently, L-His-N-CQDs were incorporated into a plant oil-based binder to formulate fluorescent anti-counterfeiting ink. Adjusting the mixing ratio of tung oil and soybean oil effectively regulated the ink’s drying properties. When the tung oil–soybean oil ratio was 2:1 or 3:1, the ink achieved optimal drying properties, transparency, and fluidity, ensuring excellent printability and anti-counterfeiting performance in screen printing. Fluorescence spectroscopy tests indicated that the composite fluorescent anti-counterfeiting ink possessed remarkable extended fluorescence stability and anti-quenching properties. The ink’s resin binder, plant oil solvent, and additives did not hinder the luminescence of carbon quantum dots. Thus, the prepared ink is highly applicable in anti-counterfeiting printing technologies and related fields, offering new material options for such printing techniques.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Soil Science and Plant Nutrition
·
2026
·
IF 3.6
Shen Lianzhou,Cai Yue,Gao Juan,Li Hui
Purpose This study compared the responses of fomesafen-tolerant (T) and -sensitive (S) maize ( Zea mays L.) seedlings exposed to the same soil residue levels to improve understanding of fomesafen carryover and its management in rotational cropping systems. Methods Pot experiments were conducted with T and S seedlings at soil fomesafen residue levels of 0, 0.2, 0.4, and 0.6 mg kg −1 . Soil fomesafen residues, plant accumulation, seedling growth, physiological injury, defense- and detoxification-associated responses, and rhizosphere bacterial composition were assessed. Results T seedlings maintained more stable growth, whereas biomass reductions in S seedlings reached 57.31%. Under the same fomesafen residue exposure, T seedlings exhibited a stronger glutathione-related Phase II response, with glutathione S-transferase activity increasing by 23.21-47.25% across the residue gradient; no comparable increase occurred in S seedlings. Rhizosphere bacterial composition also differed between varieties and residue levels, with selected genus-level differences involving Sphingobium , Massilia , and the Burkholderia-Caballeronia-Paraburkholderia complex. Conclusions Although fomesafen interferes with protoporphyrinogen oxidase in plants, the tolerance of T seedlings to soil fomesafen exposure was associated with stronger intracellular detoxification-related responses and distinct changes in rhizosphere bacterial composition. These findings provide critical ecological and physiological insights for mitigating herbicide carryover risks and ensuring agricultural sustainability.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 19
·10561-10572
·
IF 2.936
Lu Fan,Min Deng,Caixue Lin,Chen Xu,Yana Liu,Zhennan Shi,Yingxi Wang,Zushun Xu,Ling Li,Man He
Fe3O4/MOF (metal organic framework)/L-cysteine was synthesized and applied for the removal of Cd(II) from wastewater. The adsorption kinetics and isotherms were investigated, and the results indicated that the adsorption obeyed the pseudo-second-order kinetic model and Langmuir isotherm. The maximum adsorption capacity was calculated to be 248.24 mg g−1. Fe3O4/MOF/L-cysteine was further applied to determine trace amounts of Cd(II) in real water samples using ICP-AES (inductively coupled plasma-atomic emission spectroscopy) based on magnetic solid-phase extraction (MSPE). The determination limit was 10.6 ng mL−1. Additionally, Fe3O4/MOF/L-cysteine can also be used as a fluorescent sensor for “turn-off” detection of Cd(II), and the detection limit was 0.94 ng mL−1.
✓ 已验证
DOI
高影响因子
GENOMICS
·
2024
·
IF 3.4
Jiahui Li,Yuyang Chen,Shuang Zhang,Yuehan Zhao,Demeng Gao,Jiaying Xing,YuYan Cao,Guangyu Xu
This study investigated the preventive and protective effects of Portulaca oleracea polysaccharides (PP) on Acute liver injury (ALI) in mice and its regulatory effects on intestinal microorganisms, and explored the underlying protective mechanisms. Initially, PP was administered, and then CCl4 was used to induce the mouse ALI model. Serum and liver markers were measured by ELISA. The fecal microbiota was analyzed by 16S rRNA sequencing. The results showed that PP significantly decreased the expression levels of ALT and AST in the serum of mice. The expression levels of MDA, TNF-α, and IL-6 in liver tissue were found to be reduced, while the levels of GSH and SOD increased. At the same time, PP increased the number of Bacteroides , reduced the number of Proteobacteria , activated the GAG degradation pathway, protected the integrity of the intestinal barrier, inhibited oxidative stress and reduced inflammation, thereby assisting the prevention and protection of ALI.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2025
·
IF 5.4
Jing Song,Jiali Jiao,Chenguang Jiang,Yaxin Qiu,Defeng Wu
Developing new biodegradable polyesters with well-defined structures is of interest. We reported an attractive two-component aliphatic polyester-based thermoset, which was prepared via the esterification of biomass-derived l-malic acid oligomers and three-arm poly(ε-caprolactone) (3a-PCL) triols. The chemical network formed via the ester bonding and physical network caused by the crystallization of a 3a-PCL arm chain coexist in the thermoset, and the competition of the two characteristic networks leads to a negative correlation between the degree of covalent cross-linking and the degree of crystallization; thereby, the mechanical state of the thermosets can be easily tuned: from the plastic to elastomer state. Moreover, the crystallization temperature and melting point of the thermosets range in 30 °C ∼ 50 °C and −7 °C ∼ 18 °C, respectively, which are favorable for shape morphing as the thermosets are used as shape-memory materials. This work also provides valuable information about tailoring the mechanical and thermal properties of star-shaped polyester-based thermosets.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOCHEMISTRY
·
2024
·
IF 2.9
Yu Han,Yuelin Luo,Bao-Di Ma,Jie Li,Jian-He Xu,Xu-Dong Kong
l-(+)-Tartaric acid plays important roles in various industries, including pharmaceuticals, foods, and chemicals. cis-Epoxysuccinate hydrolases (CESHs) are crucial for converting cis-epoxysuccinate to l-(+)-tartrate in the industrial production process. There is, however, a lack of detailed structural and mechanistic information on CESHs, limiting the discovery and engineering of these industrially relevant enzymes. In this study, we report the crystal structures of RoCESH and KoCESH-l-(+)-tartrate complex. These structures reveal the key amino acids of the active pocket and the catalytic triad residues and elucidate a dynamic catalytic process involving conformational changes of the active site. Leveraging the structural insights, we identified a robust BmCESH (550 ± 20 U·mg–1) with sustained catalytic activity even at a 3 M substrate concentration. After six batches of transformation, immobilized cells with overexpressed BmCESH maintained 69% of their initial activity, affording an overall productivity of 200 g/L/h. These results provide valuable insights into the development of high-efficiency CESHs and the optimization of biotransformation processes for industrial uses.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2024
·
IF 8.1
Peicheng Huang,Dan Zou,Chunhua Dong,Chongjian Tang,Qingzhu Li,Pengwei Zhao,Ping Zhang,Qi Liao,Zhihui Yang
Selenium (Se) fortification is witnessed to simultaneously inhibit absorbing Cadmium (Cd) and Arsenic (As) by rice plants, but the mechanism is unclear. Here, the effects of Se on the root morphology, iron plaque (IP) content, soil Fe 2+ content, radial oxygen loss (ROL), and enzyme activities of the rice plants in the soil contaminated by Cd and As were intensively investigated through the hydroponic and soil experiments. Se effectively alleviated the toxic effects of Cd and As on the plants and the dry weight, root length, and root width were increased by 203.18%, 33.41%, and 52.81%, respectively. It also elucidated that ROL was one of the key factors to elevate IP formation by Se and the specific pathways of Se enhancing ROL were identified. ROL of the plants in the experiment group treated by Se was increased 36.76%, and correspondingly IP was magnified 50.37%, compared to the groups with Cd and As. It was owing to Se significantly increased the root porosity (62.11%), facilitating O 2 transport to the roots. Additionally, Se enhanced the activities of catalase (CAT) and superoxide dismutase (SOD) to promote the catalytic degradation of ROS induced by Cd and As stress. It indirectly increased O 2 release in the rhizosphere , which benefit to form more robust IP serve as stronger barrier to Cd and As. The results of our study provide a novel molecular level insight for Se promoting root IP to block Cd and As uptake by the rice plants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jun-Fei Gu,Jichao Wang,Caixia Wang,Jin Li,Cheng Chen,Ni Zhang,Xiang-Ya Xu,Somboon Chaemchuen
Fe–N–C catalysts have emerged as the most promising alternatives to commercial Pt/C catalysts for oxygen reduction reaction (ORR) due to their cost-effectiveness and favorable activity. Herein, a dual-site Fe/FeN x -NC catalyst was synthesized via a green, in situ doping strategy using two-dimensional Fe-doped ZIF-L as a nitrogen-rich precursor. The catalyst integrated Fe nanoparticles (NPs) and FeN x sites anchored on carbon nanotubes, intertwined with nitrogen-doped porous carbon nanosheets, achieving a high active site density and graphitisation. Electrochemical tests revealed that the optimized Fe/FeN x -NC-1 exhibited significant ORR activity, with a half-wave potential of 0.92 V and 0.80 V for alkaline and acidic medium, respectively. Zn-air batteries employing Fe/FeN x -NC-1 delivered a peak power density of 168 mW·cm −2 and a specific capacity of 790 mAh·g −1 , outperforming those of Pt-based catalysts. Density functional theory calculations demonstrated a reduced free energy barrier for the rate-determining step (0.48 eV) compared to single-site Fe–N 4 models (0.79 eV). The synergy between Fe NPs and FeN x optimized ORR intermediate adsorption and facilitated charge/mass transfer. This study offers valuable insights for the development of advanced energy conversion systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiuzi Che,Yongbo Fan,Yao Su,Yuanbiao Gong,Qinghua Guo,Yafei Feng,Dengwei Hu,Weijia Wang,Huiqing Fan
Piezoelectric nanogenerators (PENGs) are booming for energy collection and wearable energy supply as one of the next generations of green energy-harvesting devices. Balancing the output, safety, degradation, and cost is the key to solving the bottleneck of PENG application. In this regard, yttrium (Y)-doped zinc oxide (ZnO) (Y-ZnO) was synthesized and embedded into polylactide (PLLA) for developing degradable piezoelectric composite films with an enhanced energy-harvesting performance. The synthesized Y-ZnO exhibits high piezoelectric properties benefiting from the stronger polarity of the Y–O bond and regulation of oxygen vacancy concentration, which improve the output performance of the composite film with Y-ZnO and PLLA (Y-Z-PLLA). The obtained open-circuit voltage (Voc), short-circuit current (Isc), and instantaneous power density of the optimized Y-Z-PLLA PENG reach 17.52 V, 2.45 μA, and 1.76 μW/cm2, respectively. The proposed PENG also shows good degradability. In addition, practical applications of the proposed PENG were demonstrated by converting biomechanical energy, such as walking, running, and jumping, into electricity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Jiaming Wang,Zhentao Li,Xinru Wu,Zifei Wang,Bin Liang,Yang Gao,Yonggang Dai,Qiong Wu
In the present study, Physalis alkekengi L. calyx total flavonoids (PCTF) were extracted using the ultrasound-assisted ethanol method and separated and purified using macroporous resin AB-8. Physalis alkekengi L. calyx total flavonoid-chitosan (PCTF-CS) composite films containing 0.05 %, 0.10 % and 0.15 % PCTF were prepared using the purified PCTF laminated with chitosan (CS) and compared with single CS films, respectively, to investigate their mechanical properties, barrier properties, optical properties, microstructure, crystallography, thermal stability, water contact angle, particle size and zeta potential, antioxidant property, antimicrobial property, and preservation effect on chilled beef. The PCTF-CS films with PCTF additions had darker colors and higher mechanical and barrier properties than the CS films. In addition, the addition of PCTF improved the antioxidant and antimicrobial properties of the CS films. It enhances the freshness retention of fresh beef, and effectively inhibits the rise of weight loss, pH, total bacteria, total volatile basic nitrogen, and thiobarbituric acid reactive substances in beef, prolonging the shelf life of beef. These results indicate that the addition of PCTF can provide CS films with superior functional properties and bioactivities and that PCTF-CS composite films are a potential and promising packaging material for food preservation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2025
·
IF 3.5
Huimei Wang,Chang Li,Yingzhi Li,Jiaming Gao,Xueping Leng,Danfei Huang
BACKGROUND Selenium nanoparticles (SeNPs), comprising a novel selenium element with higher bioactivity, easily aggregate into large black monomeric selenium particles. In the present study, polysaccharides from the seeds of Plantago asiatica L. (PLP) was used as a template and morphology/particle size modifier to synthesize selenium nanoparticles. The preparation process of SeNPs stabilized by PLP was optimized, and its antioxidant and immunological activities were investigated. RESULTS The optimal preparation conditions of PLP-SeNPs were a reaction temperature of 60°C, a reaction time of 1.5 h, a PLP concentration of 0.04 mg · mL −1 and a Na 2 SeO 3 /Vc molar ratio of 1:5. Stable spherical PLP-SeNPs with a particle size of 78.39 ± 2.15 nm were prepared through this process. The PLP-SeNPs complex at a concentration of 32 μg · mL −1 demonstrated scavenging activities against 1,1-diphenyl-2-picrylhydrazyl radicals, hydroxyl radicals and 2,2′-azinobis-(3-ethyl-benzothiazolin-6-sulfonic acid) diammonium salt radicals of up to 49.49 ± 2.58%, 60.99 ± 2.49% and 42.07 ± 1.76%, respectively. The PLP-SeNPs complex significantly increased the activation of RAW264.7 cells through improving phagocytosis, reactive oxygen species levels, and the secretion of tumor necrosis factor-α and interleukin-10. CONCLUSION The present study lays a theoretical foundation for the development of food-borne SeNPs and the exploration of their application in functional foods, which will help to promote the high-value utilization of P. asiatica L., and also has an important guiding significance for the healthy development of selenium-enriched functional food industry. © 2025 Society of Chemical Industry.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Haoran Zheng,Na Wei,Boyun Guo,Jiping Wang
The development of efficient and environmentally friendly hydrate inhibitors is crucial for advancing methane hydrate exploitation. However, existing inhibitors often suffer from poor biodegradability, low inhibition efficiency, and short action duration, limiting their practical application. In this study, a copolymer of L-aspartic acid and N-vinylpyrrolidone (NVP-ASP) was synthesized and evaluated as a novel kinetic hydrate inhibitor. Experimental results show that NVP-ASP extends the induction time by 66.55 % and reduces the hydrate formation efficiency by 7.98 % compared to the commercial inhibitor polyvinylpyrrolidone (PVP). Molecular simulations further elucidate its multi-stage inhibition mechanism. During nucleation, NVP-ASP effectively restricts the mobility of surrounding water and methane molecules, with an average of 13.13 water and 13.45 methane molecules adsorbed within 5 Å. During the growth stage, NVP-ASP exhibits strong anti-agglomeration behavior, significantly suppressing the formation of hydrate cages. The growth rates for simple (5 12 ) and complex (5 12 6 2 ) cages are reduced to 61.54 % and 50 %, respectively, much lower than the corresponding values for PVP (166.67 % and 233.33 %). Moreover, NVP-ASP shows low inclusion tendency into forming hydrate cages, resulting in prolonged inhibition. These findings provide mechanistic insights into hydrate formation and offer a promising strategy for designing high-performance kinetic inhibitors.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）