CELLULOSE
·
2022
·Vol. 29
·期 8
·4439-4453
·
IF 6.123
Li Yinan,Li Huixin,Huang Jin,Huang Liulian,Chen Lihui,Ni Yonghao,Zheng Qinghong
A highly transparent ZnO/cellulose composite membrane with UV sensing and shielding abilities was prepared via a facile blending method. ZnO nanoparticles (ZnO NPs) without additional surface modification are uniformly dispersed in the regenerated cellulose (RGC) matrix through the N-methyl-morpholine-N-oxide (NMMO) dissolution of cellulose. Agglomeration of the ZnO NPs is effectively minimized, thanks to the strong hydrogen bonds between ZnO NP and cellulose. The optimized ZnO/RGC membrane exhibits not only high a shielding ratio of 97.67 ± 0.11% for UV lights (< 360 nm) but also high transparency of 87.12±1.55% in the visible light region, which is comparable to traditional plastic products. Benefiting from the high photoelectric performance of ZnO NPs, a UV sensor and a UV blocker were integrated into the same device. The as-fabricated ZnO/RGC membrane, with sensitive UV detecting and effective blocking, as well as the rich availability of cellulose as raw material and its biodegradable nature, is an ideal candidate for high-performance UV detection and protection applications. Graphical abstract
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高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Zhizhong Han,Min Luo,Li Chen,Jinghua Chen,Chunyan Li
In this work, a novel label free photoelectrochemical (PEC) immunosensor has been developed for the detection of α-fetoprotein (AFP). The immunosensor was based on Au-ZnO flower-rods (FRs) heterostructure, where Au nanoparticles (NPs) were firstly electrodeposited by cyclic voltammetry methods. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Mott-Schottky plot (MS), UV–vis diffuse reflectance spectrum and fluorescence emission spectrum were used for the characterizations of Au-ZnO FRs. The results demonstrated that Au NPs not only obviously enhanced the visible light absorption of ZnO FRs due to surface plasmon resonance (SPR) but also improved the separation of photo-generated electron-hole pairs. Therefore, the photocurrent of Au-ZnO FRs was increased under simulated sunlight. The photocurrent was reduced after the specific antibody-antigen immune reaction. And the photocurrent decrement was linear with the logarithm of AFP antigen concentration in the range from 0.005 ng mL −1 to 50 ng mL −1 with a low detection limit of 0.56 pg mL −1 (S/N = 3). The PEC immunosensor also exhibited high anti-interference property and acceptable stability. This work would provide a promising photoelectrochemical strategy for the detection of other proteins in clinical diagnosis.
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高影响因子
RSC Advances
·
2021
·Vol. 11
·期 56
·35663-35672
·
IF 3.361
Fang Wang,Zhenzhou Zhu,Jia Guo
ZnO and g-C3N4 provide excellent photocatalytic properties for degradation of antibiotics in pharmaceutical wastewater. In this work, 2D–2D ZnO/N doped g-C3N4 (NCN) composite photocatalysts were prepared for degradation of tetracycline (TC), ciprofloxacin (CIP) and ofloxacin (OFLX). The addition of ZnO resulted in higher separation efficiency and lower recombination rate of photogenerated charge under visible light. The composite photocatalyst showed better degradation performance compared to ZnO or NCN alone. The TC degradation reached 81.3% in 15 minutes by applying the prepared 20% ZnO/NCN composite photocatalyst, showing great competitiveness among literature reported g-C3N4 based photocatalysts. After 30 minutes, the degradation rate of TC, CIP and OFLX reached 82.4%, 64.4% and 78.2%, respectively. The TC degradation constant of the composite photocatalyst was 2.7 times and 6.4 times higher than NCN and CN, respectively. Radical trapping experiments indicated that ·O2− was the dominant active substance. The transference of excited electrons from the conduction band (CB) of NCN to ZnO enhanced the separation of photogenerated electron–hole pairs and simultaneously suppressed their recombination. This study provides a possibility for the design of high-performance photocatalysts for antibiotics degradation in wastewater.
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高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Shengjun Li,Zeng Chen,Tao Li,Huiping Gao,Chaochao Wei,Wei Li,Wenping Kong,Weifeng Zhang
Employing vertical nanosheet-structured films as photoanodes of quantum dot sensitized solar cells (QDSCs) might provide a direct pathway for the photo-exited electrons. Here, the vertical ZnO, ZnO/TiO 2 and TiO 2 nanosheet-structured films were prepared by a feasible deposition processes . These films were sensitized with CdS quantum dots and assembled with CuS counter electrodes to fabricate QDSCs. The photoelectric properties of ZnO/TiO 2 composite films were superior to both pure ZnO and TiO 2 films. The effects of TiO 2 coating were investigated using electrochemical impedance spectroscopy (EIS). It was found that the photo-excited electron lifetimes in the photoanode were significantly improved with TiO 2 layer. The optimum power conversion efficiency was about 1.95% under AM 1.5 G illumination (100 mW cm −2 ), with a short circuit current density, open circuit voltage, and fill factor of 6.11 mA cm −2 , 0.562 V and 0.57, respectively.
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高影响因子
FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Jinlong Xu,Xuejie Shi,Minghan Liu,Mantun Gu,Xi Dai,Tariq Aziz,Nada K. Alharbi,Mariam Ameen Mojally,Fahad Al-Asmari,Fakhria A. Al-Joufi,Lin Lin
Mangoes often undergo irreversible decay and deterioration due to physiological changes and pathogen infections after harvest, leading to significant economic losses. In this study, tea polyphenol (TP) was utilized as a green stabilizer to synthesize zinc oxide nanoparticles (ZnONPs), which were further incorporated with chitosan to form composite films. The structural and property changes of the composite films, as well as their application in mango preservation, were systematically investigated. The results demonstrated that ZnONPs with TP possessed a smaller particle size and zeta potential, resulting in better stability and dispersion. The incorporation of ZnONPs significantly improved the mechanical, barrier, and antimicrobial properties of the composite films. A synergistic antimicrobial effect against Colletotrichum gloeosporioides were observed at a composite film solution concentration of 10 mL/100 mL. Additionally, the composite films showed promising application potential in mango preservation, significantly mitigating nutritional loss and quality deterioration during storage. Investigations into zinc migration demonstrated that it did not migrate from the peel to the pulp during mango storage.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Mingxin Jin,Chenglong Liu,Haohao Wan,Ziwen Yuan,Guiquan Wei,Min Shao,Yushan Wan
Heavy metal contamination in aquatic environments represents a critical global threat to water resource security. In this study, polyaniline/zinc oxide (PANI/ZnO) composites doped with hydrochloric acid and sulfuric acid were successfully synthesized to overcome the instability of composites resulting from the rapid dissolution of ZnO under low-pH conditions. Batch static adsorption experiments were performed, and both adsorption kinetic and isotherm models were systematically fitted to elucidate the adsorption behavior. The sulfuric acid-doped PANI/ZnO (PANI-SO 4 /ZnO) exhibited a considerably higher adsorption capacity of 396.5 mg g −1 compared with the hydrochloric acid-doped composite (PANI-Cl/ZnO, 297.1 mg g −1 ). This enhanced performance was attributed to the abundant adsorption sites in PANI-SO 4 /ZnO and the chemical precipitation mechanism involving Pb 2+ . The experimental results aligned well with the pseudo-second-order kinetic model and the Freundlich isotherm model (typical thermodynamic isotherm models), indicating that chemisorption and heterogeneous surface interactions governed the adsorption process. In cyclic and dynamic adsorption tests, PANI-Cl/ZnO displayed better reusability and mass-transfer stability. This variation originated from the irreversible formation of PbSO 4 precipitates in PANI-SO 4 /ZnO, which hindered regeneration, whereas Cl – in PANI-Cl/ZnO contributed to preserving the composite’s structural integrity. Although PANI-SO 4 /ZnO is suitable for short-term, rapid treatment of high-concentration Pb 2+ wastewater, its recyclability is restricted by the irreversibility of precipitation. In contrast, the high stability and effective mass transfer of PANI-Cl/ZnO render it an ideal material for continuous industrial wastewater treatment systems requiring long-term operation.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yanhui Sun,Dongye Han,Shupeng Sun,Yuhua Dong,Xiaogan Li,Kehan Qian
The semiconductor-based sensing materials with hollow and heterojunction structures were demonstrated significant advantages in critical performance metrics including sensitivity, operating temperature, and response/recovery time. In this study, the urchin-like dual-shelled ZnO/SnO 2 hollow spheres were effectively fabricated using a two-step hydrothermal approach. Compared with pure ZnO, the prepared ZnO/SnO 2 material exhibits a larger specific surface area, and abundant interface contact sites, showing significant improvements in NO 2 gas detection. Through the formation of hollow ZnO/SnO 2 heterojunctions, the optimal operating temperature has been successfully decreased from 150℃ to 65℃. Additionally, the ZnO/SnO 2 sensor exhibits a response of 449.4–10 ppm NO 2 , which is 8.7 times that of the ZnO-based sensor. Moreover, this sensor demonstrates a fast response/recovery time (47/50 s) and long-term stability of 60 days. Selective tests confirmed the high specificity of the ZnO/SnO 2 sensor to NO 2 gas (S nitrogen dioxide /S ammonia = 345.7). Additionally, the adsorption behaviors of NO 2 on the ZnO/SnO 2 heterojunction and ZnO surface were analyzed using density functional theory (DFT) calculations, providing theoretical insights for optimizing the performance of hollow core-shell structured sensors.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yuantao Qian,Yuxin Xiao,Aihu Feng,Kun Liu,Junge Chen,Le Mi,Yang Yu,Jun He,Yun Yu,Yunzhen Cao
Thermal control coatings are crucial for regulating temperatures in spacecraft. However, contamination from lunar dust presents a significant challenge to their thermal control performance. This study introduces an innovative ZnO-based thermal control coating designed to resist contamination by lunar dust. By engineering a multiscale surface roughness with flower-like ZnO pigments and valley-filling ZnO nanorods, the coating enhances nano-roughness and reduces the contact area with dust, thereby decreasing adhesion force and minimizing particle retention. While maintaining thermal control effectiveness comparable to traditional coatings, it demonstrated a lower dust adhesion force of 3.1 nN, which is one-third that of conventional coatings. Furthermore, following dust exposure experiments, the coating exhibited minimal dust contamination, with a lower change in the solar absorption to emittance ratio ( Δα s /ε = 0.04), indicating little degradation in thermal control performance. This synergistic combination of hierarchical roughness and valley-filling nanorod structures provides a promising dust mitigation solution for spacecraft thermal control coatings, showcasing potential for future lunar, Martian, and other planetary missions.
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高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Minglei Lu,Yushen Liu,Fan Yang,Yuxin Ge,Xudong Shi,Yongqi Mao,Xinyuan Song,Zejian Li,Jiajin Li,Yuxiang Lyu,Guimei Liu,Zhuoyu Zheng,Yuan Yuan,Junwei Liao,Xitang Qian,Minhua Shao,Tiejun Wang
Ensuring safer and more satisfactory hydrogen (H2) production from aqueous-phase reforming of methanol (APRM) is crucial for automotive, marine, and aerospace applications. However, nonprecious metal catalysts face challenges in realizing efficient methanol (CH3OH) dehydrogenation and effective carbon monoxide (CO) suppression for APRM without a strong base. In this work, we synthesized Ga2O3-modified Cu–ZnO catalysts with carbon encapsulation, leading to a uniform Cu dispersion. The optimized 12 wt % GCZ-2.0-C450 catalyst exhibits good performance over a wide temperature range (130–210 °C). It achieves a high H2 production rate of 101.2 μmol/gcat/s and low CO selectivity (0.07%) at 210 °C with long-term stability, surpassing the reported Cu- and Pt-based catalysts in APRM. Density functional theory calculations indicate that the Ga2O3 introduction significantly reduces the Gibbs energy of the rate-determining step of *CH3O + *H → *CH2O + *H2, dropping from 1.25 to 0.60 eV. Meanwhile, the adsorption energy of the generated *H2 decreases from −2.92 to −0.13 eV, which facilitates the release of gaseous H2.
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高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Zhe Sun,Yuanyuan Hui,Ding Yang,Lusha Wei,Ke Ren,Qianyi Mi,Bingqian Liu,Yiran Tian,Bini Wang
Aflatoxin M 1 (AFM 1 ) contamination in milk and dairy products poses a serious food safety concern, especially in regions with limited regulatory oversight. This study developed a zinc oxide–zirconium metal–organic framework (ZnO@PCN-777) for efficient AFM 1 removal from goat milk. The composite exhibited a high adsorption capacity of 112.87 mg g −1 . Kinetic modeling indicated that the adsorption followed a pseudo-second-order model, while isotherm analysis conformed to the Freundlich model, suggesting multilayer adsorption on a heterogeneous surface. X-ray photoelectron spectroscopy (XPS) analysis identified hydrogen bonding, π–π stacking interactions, and pore-filling effects as the primary mechanisms of AFM 1 adsorption, with their synergistic action enhancing overall efficiency. ZnO@PCN-777 maintained excellent reusability across 15 adsorption–desorption cycles. In real milk samples, adding 0.075 % ( w /w) of the adsorbent achieved a 93 % AFM 1 removal rate without affecting milk quality, demonstrating a strong potential for dairy detoxification applications.
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DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chunyuan Jiang,Xinrui Zhang,Haizhen Ji,Jie Zhang,Xingjian Li,Shoufang Xu,Faqiang Li,Yinwen Li
Fluorine/silicon-free waterborne polyacrylate/nano-ZnO composite cotton fabric coatings (EPSAs) were developed to address the potential environmental and health risks posed by traditional fluorine-containing finishing agents. A molecular bridge constructed by 1,6-hexanediol diacrylate (HDDA) formed a crosslinked network, promoting synergistic directional alignment of tert-butyl and long-chain alkyl groups to create a low-surface-energy chemical hydrophobic barrier. Meanwhile, the polyvinyl alcohol (PVA) modified nano-ZnO not only improved the dispersibility of nano-ZnO, but also enhanced its mechanical stability through the hydrogen bonding interaction and interpenetrating network structure between PVA molecular chains and the polyacrylate main chains. Additionally, the PVA-modified nano-ZnO and polyacrylate jointly constructed a micro-nano rough structure on the fiber surface. This effectively inhibited water adsorption and enhanced impermeability. This hierarchical synergistic effect enabled the optimized EPSA 4 coating membrane to achieve 5.4 % water absorption over 7 d while the coated cotton fabric demonstrated a 128° water contact angle with 2.5 h effective water impermeability that remained stable after 50 washing cycles. Additionally, the coating significantly enhanced the cotton fabric's UPF value from 30.5 to 93.3 and achieved antimicrobial efficiencies of 99.98 % against Escherichia coli and 99.95 % against Staphylococcus aureus . By retaining their inherent breathability, this innovative coating system provided cotton fabrics with long-term hydrophobicity, antimicrobial functionality, and UV resistance, offering an environmentally sustainable multifunctional textile solution for applications including medical protective garments, outdoor technical textiles, and other sectors requiring integrated performance and eco-friendly characteristics.
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高影响因子
FUEL
·
2025
·
IF 7.5
Lina Dai,Xianglan Dong,Enqi Zhang,Yanduo Liu
Against the backdrop of global energy and environmental challenges, research on the photocatalytic conversion of methane to methanol has made significant progress. ZnO photocatalyst, despite its many advantages, suffers from rapid recombination of photogenerated electrons and holes in single ZnO, leading to low charge separation efficiency and thus limiting the solar energy conversion efficiency. The mixed-crystal heterostructure formed by ZnO and ZnWO 4 significantly improves photocatalytic efficiency by effectively separating and utilizing high-energy-level electrons. The conduction band of ZnWO 4 serves as an ideal “bridge” for the high-energy-level electrons generated on ZnO, enabling these electrons to quickly transfer to the conduction band of ZnWO 4 , thus avoiding rapid relaxation and recombination within the conduction band of ZnO. The optimal sample achieved a methanol yield of 72 μmol/g/h, with a total carbonyl compound yield near 100 μmol/g/h, accounting for 97 % of the entire product system. This opens new avenues in the field and provides a model for the development of related composite photocatalysts, offering hope for significant breakthroughs and progress in energy conversion and utilization.
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高影响因子
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