INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Zhanwei Yang,Jin Wang,Hualei Chen,Hecheng Meng,Xiaobing Guo,Shujuan Yu
Two low-methoxy pectins (LMPs) were obtained by local electrochemical pH modification using an H-type double-layer water bath sealed electrochemical cell at the voltage of 180 V for 3 h. The weight-average molecular weight (Mw) of citrus peel pectin (CPP) prepared in the anodic part at room temperature (CPP-A 5/RT ) and in the cathodic part at 5 °C (CPP-C 5/RT ) were 346 kDa and 328 kDa, respectively, and the degrees of methylation (DM) were 36.8 % and 11.9 %. Moreover, the second-order kinetic model was most appropriate for the degradation processes, as free radicals were generated in the anodic part and β -elimination occurred in the cathodic part. Subsequently, CPP-A 5/RT and CPP-C 5/RT were utilized to fabricate food packaging film blending with polyvinyl alcohol (PVA), bcZnO (ZnO coupled with bentonite and colophony) nanorods , and Ca 2+ ions by casting method. Then the prepared films were studied for their ability to maintain the freshness of strawberries. The addition of Ca 2+ ions and bcZnO nanorods increased the thickness, water contact angle (WCA), and mechanical properties of the composite films, while decreased water vapor permeability (WVP). Therefore, the CPP-based films, supplemented with bcZnO nanorods and crosslinked with Ca 2+ ions by “egg-box” model, can serve as an antibacterial food packaging material for food preservation.
研究领域:
食品科学
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高分子材料
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食品包装
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电化学改性
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纳米复合材料
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农产品保鲜
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DOI
高影响因子
ACS Sensors
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2025
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IF 9.1
Zheng-yun Tian,Hu-wei Miao,Jin-chen Yao,Qing-ru Liu,Wei Liu,Li-qing Bu,Jin-shan Chen,Jun-cai Wu,Hao-yu Jiang,Fa-yu Wu,Yong-xing Liu
An attempt was made to explore the essence of gas selectivity and the miscellaneous reactive sites of stannic oxide, which were obtained by combining oxygen reduction with increasing fluorine and activated by light irradiation. The microstructure and gas-sensing performance of stannic oxide were analyzed using X-ray diffraction, Raman spectroscopy, atomic force microscopy, ultraviolet spectrophotometry, and an electrochemical testing system. The results show that the carbon chain length, functional group position, and functional group species of the measured gas determine the gas-sensing performance of the nanocrystalline SnO2–xFy precipitated from quaternary Zn–O–F–Sn amorphous films by designing the injection sequence of gas in time and space. For 100 ppm gas molecules, the gas response sequences of the SnO2–xFy films are methanol (42.57) > ethanol (30.14) > 1-propanol (15.63) > 2-propanol (12.36) > acetone (10.32). The alcohol gases are apt to be adsorbed on oxygen vacancies to reflect the higher response value and higher optimal temperatures (280 °C), while ketone gases prefer to be adsorbed at the active site produced by fluorine to reflect fast response/recovery speed and lower working temperatures (260 °C).
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shuting Wei,Dan Yang,Renquan Guan,Peng Xu,Yuxin Wang,Yingmin Teng,Aicen Li,Junkai Zhang,Huaqiao Tan,Lili Wang,Zheng Lou,Wenjuan Zhang,Zhao Zhao
Hydrogen chloride (HCl) gas is widely generated in industrial processes and poses significant risks to human health and ecosystems. Therefore, highly efficient and sensitive sensors are essential for its detection. Among existing HCl gas sensors, chemiresistive sensors based on metal oxide semiconductors (MOSs) have gained considerable interest owing to their structural simplicity, low cost, and ease of miniaturization. However, these sensors often suffer from limitations such as slow response, low selectivity, and high operating temperatures. In this study, we successfully synthesized gas-sensing materials enriched with crystal defects and bulk strain through high-pressure torsion (HPT) technology. These modifications provide additional active sites for gas adsorption and reaction, and induce crystal field distortion that tunes the electronic structure, ultimately enhancing the HCl sensing performance. The optimal sample, ZnO-300R 3/2 , exhibited a response value of 213.79 % toward 100 ppm HCl gas, which is 14.6 times higher than that of the pristine ZnO. Combining spectroscopic analysis with density functional theory (DFT) calculations, we clarified the synergistic mechanism between electronic band structure modulation and surface lattice oxygen activation. This work provides valuable insights for designing novel room-temperature gas sensors and promotes a deeper understanding of surface lattice oxygen-mediated sensing mechanisms.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Haiping Yu,Yuanchun Qin,Brian Chen,Fan Song,Shenyang Deng,Lin Wen,Jiaji Pan,Dongying Hu
Fabrics tend to absorb moisture and foster bacterial growth during use, due to surface hydrophilic groups such as hydroxyl groups. Economically and environmentally, extending antibacterial efficacy through hydrophobic treatment proves highly viable. This study employed pressurized impregnation to load ZnO NPs onto polyester (PET) and cotton fabrics, subsequently modified by octadecyltrichlorosilane (OTS) spraying. Post-OTS treatment, the fabrics achieved water contact angles (WCA) of 148.74 ± 0.95° and 145.47 ± 1.13°, respectively. The composite coating displays substrate adaptability by resisting stains from ordinary liquids (tea, milk, coffee, vinegar, cola, etc.) and synthetic blood while maintaining natural breathability. Bacterial eradication is accomplished by synergistic methods, which include electrostatic interactions between ZnO NPs and bacteria, as well as light-induced reactive oxygen species (ROS), giving the fabrics dual antibacterial and hydrophobic properties. The material's antibacterial and hydrophobic qualities remain constant even after acid-base immersion, UV irradiation, mechanical friction, repeated washing, and ultrasonic treatment. This fully fluorine-free approach is environmentally beneficial, increasing fabrics' application possibilities in industries such as fabric manufacturing and medicine.
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DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2025
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IF 3.6
Junping Shi,Lielin Wang,Qibiao Wang,Chao Deng,Xiuqi Pu,Shidi Yao,Liang Jiang,Qiuyi Wang
Present study reveals the effects of varying concentrations of Pr 2 O 3 on the Spectral characteristics of 35PbO-60-xB 2 O 3 -5ZnO-xPr 2 O 3 (x = 0.5–3mol%) glasses, which were prepared using the melt-quench technique. The XRD and Raman results confirm that the glasses possessed the amorphous nature with borate complexes as the main structure units. From the absorption spectrum , the glass has a strong absorbance in the visible and infrared regions. The theoretical and experimental oscillator strengths ( f exp and f c a l ), phenomenological parameters (Ω 2 , Ω 4 , Ω 6 ) of Pr 3+ were calculated using the Judd-Ofelt theory. Strong emissions in the reddish orange region at 600 nm was observed due to the transitions of Pr 3+ ions from 1 D 2 → 3 H 4 at 444 nm excitation. The optimal concentration of Pr 2 O 3 in the glass is 1 mol%, exhibiting the highest photoluminescence intensity and the second longest decay time (microsecond order). The decay time reduction with increasing Pr 2 O 3 content, indicates the presence of resonant energy transfer between Pr 3+ ions. Therefore, the Pr 3+ -dope lead zinc borate glasses could be used for red LED.
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高影响因子
Nature Synthesis
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2026
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IF 22.6
Zheng Zhiyang,Zheng Feng-Yi,Zhu Yifei,Huang Bosi,Li Tongtong,Wang Boran,Zhong Xiongwei,Liu Zhexuan,Ji Guanjun,Fu Qingjin,Zhou Guangmin
Transition-metal nanocrystal (TMN) catalysts are essential for energy conversion and storage, but their facile and controllable synthesis remains challenging. Here we report a general precursor-valence-gating strategy to prepare various monocrystalline and polycrystalline TMNs (MC/PC-TMNs, M = Co, Ni or Cu). Unlike complex regulation of traditional experimental parameters, we discover that the solid-state precursor’s oxidation state—an intrinsic parameter—governs the nucleation rate and ultimately dictates atomic crystallization periodicity. Consequently, the controllable preparation of MC/PC-TMNs was readily achieved through designing the valence diversity of the corresponding precursors. Furthermore, taking MC/PC-Co catalysts as examples, we investigate the correlation between atomic arrangements and catalytic dynamics and reveal that the PC-Co catalyst with the lower-coordination environment, compared with MC-Co, substantially promotes the conversion of reaction intermediates in the hydrazine oxidation reaction. As a result, PC-Co exhibits an ultralow Tafel slope of 14 mV dec −1 , and an assembled hydrazine oxidation reaction-based battery demonstrates excellent stability for 1,200 h at 10 mA cm −2 . This work paves the way for controllable synthesis of MC/PC-TMNs and fundamentally advances the understanding of precursor-guided crystal growth kinetics.
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高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2026
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IF 6.6
Jingyi Guo,Na Liu,Jingfu Liu,Jianjian Wu,Fei Ge
Microplastics (MPs) act as vectors for co-existing pollutants, altering their environmental behavior and ecological risks. Yet the impact of MPs on the chronic effects of co-existing pollutants remains poorly understood. Herein, we explored the role of polystyrene (PS) MPs in facilitating the transgenerational transfer (F 0 -F 4 ) and reproductive toxicity of zinc oxide nanoparticles (ZnO NPs) in Daphnia magna ( D. magna ) under chronic dietary exposure. Results showed that PS MPs facilitated the transgenerational transfer of ZnO NPs, resulting in prolonged transport of ZnO NPs by one generation. This was attributed to that PS MPs impaired Zn excretion of D. magna via significantly inhibiting the molting rates by 40% ( p < 0.05), promoting the transfer of Zn to offspring. Besides, confocal microscopy confirmed Zn enrichment in the ovum and umbilical cords. Molecular docking simulation revealed stable Zn 2 + binding to vitellogenin (VTG) protein via hydrogen bonds (-1200 kJ/mol), indicating VTG-mediated maternal transfer of Zn. Furthermore, PS MPs facilitated the multi-generational reproductive impact of ZnO NPs to extend to the fourth generation (F 3 ). Transcriptomic analysis identified significant inhibition of prolactin signaling pathways, with the key genes Signal Transducer and Activator of Transcription ( STAT ) and VTG decreasing by 80.4% and 7.8% in the female generation (F 0 ), respectively, inhibiting oocyte development. Overall, these findings confirmed that MPs facilitated the reproductive toxicity and transgenerational transfer of co-existing pollutants, providing critical insights for long-term ecological risk assessment of MPs and co-existing pollutants combined exposure in aquatic systems.
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
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IF 7.6
Xinyu Qi,Zhenbo Li,Yaxin Jing,Yurong Yin,Xiaoge Lu,Liping He,Chengyi Dai,Chunshan Song,Xiaoxun Ma
A novel amorphous zeolite catalyst (Zr–AZ) with abundant Zr–OH active sites and a hierarchical pore structure (micro-, meso-, and macropores) was developed for the ethanol-to-butadiene (ETB) reaction. Mechanically mixed with ZnO, the catalyst achieved 73% butadiene selectivity at 92% ethanol conversion and maintained stability over 100 h. Zr anchoring on silanol nests formed Zr–OH sites, while the hierarchical pores mitigated carbon deposition. FT-IR and 1H NMR identified surface hydroxyl types, and CO adsorption IR confirmed Zr–OH as the active sites. Reaction mechanism studies via EtOH-TPD, EtOH-TPSR, and in situ FT-IR revealed that ethanol dehydrogenates on ZnO to acetaldehyde, which then undergoes aldol condensation on Zr–OH sites to form butadiene. This design enhances both selectivity and stability for efficient ETB conversion.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiaochao Xu,Xiangxia Wu,Zhen Xiao,Zhi-Ang Zhao,Guanwei Peng,Jinni Shen,Lifang Yang,Wenxin Dai,Zizhong Zhang
The selective photooxidation of CH 4 into value-added chemical products under ambient conditions offers a viable pathway for the rational utilization of natural gas resources. However, the direct oxidation of methane to synthesize oxygenates still faces significant challenges due to insufficient chemo-selectivity in active intermediate radical formation and consecutive side reactions of primary products. Rather than introducing multiple metal species to create active sites, we show that controlled defect generation on the substrate offers an effective pathway for catalytic enhancement. Here we developed a ZnO aerogel-supported ruthenium single atom photocatalyst for selective conversion of CH 4 to CH 3 OH. Under ambient conditions, 1Ru/ZnO achieved a methanol production rate of 407 μmol g −1 h −1 with a high selectivity of 91.7%. The observed activity enhancement is principally attributable to two factors: (i) the ZnO aerogel microspheres with abundant dual-defect structures serve as an effective substrate material, offering abundant active sites to facilitate the CH 4 activation process; and (ii) monatomic Ru 4+ sites were employed as efficient active sites for methane adsorption and dehydrogenation; meanwhile the separation of redox sites was optimized to effectively suppress over-oxidation. The integration of aerogels (with abundant defect sites) and supported metal species offers a novel strategy for achieving direct CH 4 oxidation to CH 3 OH.
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高影响因子
APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Shan Tang,Jiumei He,Chengcheng Wan,Li Jiang,Qianchun Zhang
This study addresses the urgent demand for simple and sensitive online gas monitoring technologies in the field of environmental safety by developing a high-performance cataluminescence (CTL) sensor based on oxygen-vacancy-rich microporous titanium dioxide (Ovm-TiO 2 ) for detecting trace isobutyraldehyde (IBL). The Ovm-TiO 2 material, synthesized via a two-step heating process combined with a KBH 4 treatment, features abundant oxygen vacancy defects on its surface, which are pivotal to enhancing sensor performance. Density functional theory (DFT) calculations unravel the surface-mediated mechanism, the oxygen vacancies serve as active sites, drastically enhancing the chemical adsorption and activation of O 2 on the Ovm-TiO 2 surface, which is the key to boosting the cataluminescence efficiency. The developed sensor exhibits outstanding detection performance for IBL, with a wide linear range (0.0100–5.00 mg/L, R 2 = 0.9997), a low detection limit (3 μg/L), and achieved recovery rates of 87.6%–107% with good reproducibility (relative standard deviation, RSD: 5.3%–9.0%) in practical sample analysis. This work not only provides a viable online monitoring solution for IBL but also elucidates the CTL enhancement mechanism at the atomic level, offering important theoretical foundations and practical insights for designing highly sensitive gas sensors.
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高影响因子
Journal of Food Measurement and Characterization
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2026
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IF 3.6
Yang Fang,Lei Sichao,Ma Renyi,Zhang Wen,Luo Minhui,Xie Chenyang
To develop a novel intelligent packaging material capable of real-time food freshness monitoring and preservation, this study prepared a pH-responsive bioactive film (KCNB) by incorporating blueberry anthocyanins (BA) and nano‑zinc oxide (NanoZnO) into a konjac glucomannan/chitosan (KGM/CS) matrix. The resulting KCNB film was structurally characterized and functionally evaluated and results confirmed the successful dispersion of NanoZnO and BA within the matrix. The film exhibited excellent UV‑blocking capacity, significantly enhanced antioxidant activity (DPPH radical scavenging rate increased to 77.57%), and effective antibacterial efficacy against E. coli and S. aureus , which collectively help prevent light‑induced deterioration, chemical oxidation, and microbial spoilage. Crucially, the film displayed a reversible color transition from red to green across the pH range of 2–12, providing a basis for its function as a visual freshness indicator. When applied to chicken breast preservation, the KCNB film, through the synergistic action of these multiple functions, effectively slowed down spoilage, maintained a lower total volatile basic nitrogen (TVB‑N) level, and thereby extended the shelf life by approximately 4 days compared with the control group. This study demonstrates that the developed multifunctional film holds high potential for application in intelligent bioactive packaging of meat products.
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高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Yuhong Zhang,Jingyi Zhang,Jingliang Zhang,Chenhao Han,Hang Liu
In this paper, a series of Zn 3 Mo 2 O 9 :Yb 3+ /Eu 3+ /Tb 3+ phosphor are prepared by solid-state reaction. The up-conversion(UC)/down-shifting(DS) luminescence properties are investigated in detail. The intensities of all emission bands present luminescence thermal enhancement under 980 nm excitation. From 293 to 493 K, the red emission intensity of Zn 3 Mo 2 O 9 :Yb 3+ /Eu 3+ sample increase by 2.36 times, and the green emission band intensity of Zn 3 Mo 2 O 9 :Yb 3+ /Tb 3+ sample increase by 4.85 times. The temperature-dependent cooperative energy transfer(CET) process of Yb 3+ ions has an important contribution to thermal enhancement due to the negative thermal expansion(NTE) of Zn 3 Mo 2 O 9 matrix. In addition, the optical temperature sensing properties of the Zn 3 Mo 2 O 9 :Yb 3+ /Tb 3+ /Eu 3+ phosphor are discussed according to the luminescence intensity ratio(LIR) technique. Zn 3 Mo 2 O 9 :Yb 3+ /Tb 3+ /Eu 3+ phosphor can obtain bright deep red, yellow and orange light under the excitation of 395, 487 and 980 nm, which is used for multi-mode fluorescence anti-counterfeiting.
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DOI
高影响因子
危险品化学品经营许可证（带存储）