IONICS
·
2026
·
IF 3.4
Chen Desheng,Zhang Juan,Cui Shichuang,Zhang Yuqing,Zha Jinrun,Yi Jinshuai,Zhu Quanyao
V 2 O 5 has attracted extensive research interest in the field due to its unique capability of both anodic and cathodic electrochromism. In this study, ZnO/V 2 O 5 nanocomposite films were fabricated by incorporating ZnO nanorod arrays into V 2 O 5 films via a combination of electrochemical deposition and spin‑coating. The electrochemical and optical properties of the composite films were characterized by cyclic voltammetry, chronoamperometry, UV‑Vis spectroscopy, and colorimetric analysis. The results show that the ZnO/V 2 O 5 composite films exhibits fast electrochromic switching (t c /t b = 2 s/2.6 s) and can reversibly switch among blue‑gray, olive‑green, yellow‑green, and yellow colors. It also achieves a high transmittance modulation of 31.33% at 550 nm, a wavelength to which the human eye is highly sensitive. This work proposes a new strategy for the preparation of ZnO/V 2 O 5 composite films, and this strategy offers new insights into obtaining fast-response electrochromic films.
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高影响因子
Polymers
·
2026
·Vol. 18
·期 9
·1114
·
IF 5.8
Phan Thi Minh Huyen,Luu Tien Hung,Phan Thi Hong Tuyet,Nguyen Huy Dan,Luu Thi Viet Ha,Tran Thi Nhu Quynh,Nguyen Xuan Dung
Antibiotic contamination of water, particularly tetracycline (TC), poses significant environmental risks and requires sustainable treatment solutions. This study reports a green and cost-effective synthesis of a ZnO/chitosan nanocomposite (ZnO/CS) for photocatalytic TC removal. ZnO nanoparticles were synthesized using lime juice as a natural stabilizing agent and subsequently incorporated into a chitosan matrix. The physicochemical properties of the composite were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) surface area analysis. The results confirmed the successful formation of hexagonal wurtzite ZnO and strong interfacial interactions between ZnO nanoparticles and the –NH 2 /–OH functional groups of chitosan. The incorporation of chitosan significantly increased the specific surface area from 10.7 to 21.7 m 2 g −1 and reduced the band gap from 3.18 to 3.03 eV, thereby improving visible-light absorption. The photocatalytic performance was evaluated under varying pH, initial TC concentration, and catalyst dosage, with optimal conditions identified at pH 6, 20 mg/L TC, and 1 g/L catalyst. Under these conditions, the ZnO/CS nanocomposite achieved 94.1% TC degradation within 120 min under visible-light irradiation. Scavenger experiments revealed that •OH and •O 2 − radicals are the dominant reactive species, and a possible degradation mechanism was proposed. These findings demonstrate the potential of the green-synthesized ZnO/CS nanocomposite for antibiotic removal from aqueous environments.
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高影响因子
Advanced Sustainable Systems
·
2026
·Vol. 10
·期 4
·e70469
·
IF 5.6
Luying Wang,Yueting Li,Jing Tang,Xianfa Zhang,Lihua Huo,Yingming Xu,Xiaoli Cheng
Excessive NO 2 emissions not only damage the ecological environment but also endanger human health. Therefore, developing gas sensors for efficient detection of NO 2 gas is essential. In this study, a one-step solvothermal method was used to prepare the ZnWO 4 /ZnO heterostructure for NO 2 detection at room temperature (RT). The ZnWO 4 /ZnO sensors showed an excellent response for NO 2 (174.5/3 ppm) and a low detection limit of 10 ppb at RT. The synergistic interaction between the heterostructure and oxygen vacancies contributes to the superior sensing capability of ZnWO 4 /ZnO heterostructures. The construction of the heterostructure accelerates charge separation and migration, while oxygen vacancies provide abundant active sites and adsorption sites for gas molecules. This work offers a viable strategy for developing highly sensitive ZnWO 4 /ZnO-based gas sensors at RT.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Gu Weihua,Tan Xin,Liu Tao,Tao Zhe,Liu Juan,Du Wenbo,Xia Ailin
Pure carbon aerogels are constrained by insufficient electromagnetic loss mechanisms and poor compatibility between radar wave absorption and infrared stealth. Here, a heterogeneous interface engineering strategy is developed to construct ZnO/C hybrid aerogels derived from ZIF-8 and chitosan, featuring ZnO/C interfacial structures and hierarchical meso/macroporous structures. The hybrid aerogel sample, carbonized at 800 ° C (CA-Z-800), achieves optimal microwave absorption performance with a minimum reflection loss (RL min ) of –35.74 dB and an effective absorption bandwidth (EAB) of 4.55 GHz at a matching thickness of only 1.5 mm. Simultaneously, it maintains effective infrared stealth performance with a low thermal conductivity of 0.151 W/(m·K), a surface temperature rise of only ∼4 ° C, and infrared emissivity of 0.654 (3–5 μm) and 0.638 (8–14 μm). Notably, although increasing carbonization temperature to 900 ° C further reduces emissivity to 0.601 and 0.595, it severely degrades impedance matching, leading to a much weaker reflection loss (–13.53 dB) and a narrower effective bandwidth (2.85 GHz). This trade-off reveals that CA-Z-800 represents the optimal balance for radar-infrared compatible stealth. Density functional theory (DFT) calculations elucidate charge redistribution and enhanced interfacial polarization at the ZnO/C interfacial structures, while computer simulation technology (CST) simulations confirm strong microwave attenuation. Systematic control of pyrolysis temperature and ZnO microstructure enables tuning of dielectric properties and thermal insulation. These findings demonstrate a correlation between radar absorption and infrared suppression, with CA-Z-800 achieving the optimal balance among the samples tested.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 31
·e74143
·
IF 2.3
Yan Gao,Fuyuan Han,Yuxin Ma,Chenxi Bai,Junyu Xia,Kaiyue Shen,Wenlin Xu,Xue Ye,Jie Li
Zinc-based heterogeneous catalysts for the synthesis of dimethyl carbonate (DMC) suffer from unstable active sites and rapid deactivation during recycling. To address this issue, a series of zirconium-doped zinc oxide microspheres (ZnO@x%ZrO 2 ) were prepared. Among them, the optimal sample ZnO@5%ZrO 2 achieved a propylene carbonate (PC) conversion of 58.20%, a DMC selectivity of 89.90%, and a yield of 52.30%. Moreover, after five cycles, the selectivity of this catalyst decreased by only 4.10%, whereas undoped ZnO experienced a 15.70% drop in selectivity after just one use. Various characterization techniques (SEM, XRD, XPS, NH 3 -TPD, CO 2 -TPD, H 2 -TPR) revealed that high-valent Zr 4+ ions substituted Zn 2+ in the ZnO lattice, inducing a large number of oxygen vacancies to maintain charge balance and generating the required acid-base sites for the reaction. By tuning the zirconium loading, the electronic structure, vacancy concentration, and acid-base synergistic effects could be optimized, primarily dominated by moderate-strength basic sites complemented by acidic sites. This cooperative effect reduces the activation energy of the ester exchange reaction, significantly enhancing catalytic activity and excellent cycling stability. Graphical A Zr-doped ZnO microsphere catalyst was developed, in which Zr 4+ replaced Zn 2+ , resulting in a defect structure with abundant oxygen vacancies and the formation of a solid solution structure, which significantly enhanced the activity and stability of ZnO.
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APPLIED CLAY SCIENCE
·
2026
·
IF 5.2
Xu Zhang,Xiaojun Wang,Yufang Zhu,Han Liang,Xuemei Sun,Na Meng
In this study, silver nanoparticles (Ag NPs) and zinc oxide nanoparticles (ZnO NPs) were co -loaded onto polydopamine-modified montmorillonite (PDA Mt) and incorporated into a konjac glucomannan (KGM) matrix to fabricate biodegradable active food packaging films. The physicochemical properties of the KGM/ZnO/Ag/PDA-Mt films were systematically characterized using XRD, FTIR, TG, XPS, FE-SEM, and EDS mapping. The results showed that the ZnO/Ag/PDA-Mt nanofillers were successfully introduced and well-dispersed in the KGM matrix. XPS analysis further confirmed the presence and chemical states of C, O, Zn, Si, Al, and Ag in the composite film. The composite films exhibited improved mechanical properties, with the 4% KGM/ZnO/Ag/PDA-Mt film showing the highest tensile strength of 18.9 MPa, which was 86.8% higher than that of pure KGM film. The films also displayed strong antibacterial activity, with bactericidal rates of ≥98.04% against S. aureus and ≥ 98.16% against E. coli . In addition, the migration amounts of Ag and Zn in different food simulants were below the corresponding specific migration limits or reference safety limits. In blueberry preservation tests, the 4% KGM/ZnO/Ag/PDA-Mt film effectively delayed fruit deterioration by reducing the weight loss rate to 13% compared with 23% for the control, maintaining fruit firmness at 1.95 N, and preserving total soluble solids at 14°Bx after 10 days of storage. These results indicate that the developed KGM/ZnO/Ag/PDA-Mt composite film has promising potential as a biodegradable active packaging material for blueberry preservation.
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ACS Sensors
·
2026
·Vol. 11
·期 8
·7558-7571
·
IF 10.9
Cao Chen-Yang,Cheng Chen,Yue Li-Juan,Xie Ke-Feng,Dong Hua-Dong,Yang Xuan-Yu,Zhang Yong-Hui
Rational design of interfacial electronic structures and defect sites is pivotal for advancing chemiresistive gas sensing, yet achieving synergistic modulation remains a formidable challenge. Herein, we report a ternary Pd–HPW–ZnO heterostructure constructed via the integration of phosphotungstic acid (HPW) clusters and Pd nanoparticles onto porous ZnO nanosheets. This unique architecture establishes a robust electronic coupling network, where HPW acts as an electron sink, inducing electron depletion in both ZnO and Pd species to form electron-deficient Pd sites. This electronic modulation, corroborated by XPS and DFT calculations, significantly optimizes the Pd d-band center and enhances the surface Lewis acidity. Furthermore, the synergistic interaction triggers a substantial enrichment of oxygen vacancies and facilitates the spillover of active oxygen species. Consequently, the optimized sensor exhibits an extraordinary response of 2016.70 to 50 ppm triethylamine (TEA) at a low operating temperature of 110 ° C, surpassing pristine ZnO by nearly 60-fold. The sensor also demonstrates ultrafast response/recovery kinetics (16/150 s), excellent selectivity against interfering volatiles, and robust long-term stability. This work provides a paradigm for boosting sensing performance through precise interfacial electronic regulation and defect engineering in multicomponent heterostructures.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yihong Yu,Yilin Yin,Yapeng Liu,Xianyong Li,Jiazhuang Wang,Gaowu Qin,Song Li
Electrochemical CO2 reduction (CO2RR) presents a scalable route to decarbonize steelmaking by producing CO-rich syngas from captured CO2 and renewable electricity. Here, we report an inverse ZnO/AuCu electrocatalyst with a tunable oxide-metal interface. The catalyst achieves a CO Faradaic efficiency of 85.6% and a current density of −158.2 mA cm–2 at −1.0 V vs. RHE, demonstrating industrial-level performance. The engineered interface enables precise control over the CO/H2 ratio in the produced syngas, spanning from 0.3 to 10.3. This flexibility allows for tailoring the syngas to align with the thermochemical requirements of iron ore reduction. density functional theory (DFT) calculations reveal that the ZnO/AuCu interface synergistically promotes CO2 activation by lowering the energy barrier for the rate-determining *COOH formation, resulting from an elevated d-band center, and a reduced work function. Life cycle assessment (LCA) demonstrates that integrating ZnO/AuCu catalyst into blast furnace workflows could reduce CO2 emissions by ∼80% and improve electricity utilization by an order of magnitude relative to fossil-based pathways. This work establishes a materials-driven strategy that bridges catalyst design and industrial carbon recycling, paving the way for sustainable steel manufacturing.
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BIOMEDICAL MICRODEVICES
·
2011
·Vol. 13
·期 5
·865-875
·
IF 3.386
He Zhongyuan,Zhang Qinghong,Wang Hongzhi,Li Yaogang
A capillary microchannel (CM) containing TiO 2 -coated ZnO nanorod arrays was applied as a novel microfluidic device to selectively bind and enrich phosphopeptides. The device was prepared by pumping a TiO 2 sol into a CM containing preformed ZnO nanorod arrays. Different thicknesses of the TiO 2 coating were obtained by controlling the flow duration of TiO 2 sol. The modified CM achieved uninterrupted high-throughput introduction, capture and enrichment of phosphopeptides using continuous-flow operation. The microfluidic device based on the modified CM showed great selectivity, sensitivity and durability for the enrichment of phosphopeptides from tryptic protein digests. These results suggest that microfluidic chips employing this strategy can be used for rapid and high-throughput enrichment of phosphopeptides from complex mixtures.
研究领域:
分析化学
·
蛋白质组学
·
微流控技术
·
纳米材料
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 7
·1-19
·
IF 2.8
Zhu Yong,Wu Yu-Rong,Xu Long-Shan,Ma Li-Li,Jiang Yang-Ying
Photocatalysis is considered as a promising method to control water pollution caused by organic and biological pollutants. However, this technology faces some challenges, especially the easy recombination of photogenerated electron hole pairs. The construction of p–n heterojunction is a feasible way to expand the light absorption range and inhibit charge carrier recombination to improve the photocatalytic performance. But p–n heterojunction is at the expense of semiconductor redox ability to some extent. So it is necessary to build a new model to solve the above problems. Herein, an emerging Z-scheme photocatalyst composed of ZnO single crystal nanorods (SCNRs) assisted Cu 2 O ultrafine nanoparticles (Cu 2 O-UNPs) is successfully synthesized using a hydrothermal method in conjunction with a chemical reduction. The two parts of this heterostructure are chemically bonded one another to form a tight interface. The specific surface area of Cu 2 O/ZnO is 28.6 time than that of pure ZnO. The Cu 2 O/ZnO exhibited excellent photocatalytic activity and stability on simultaneous organic dye degradation due to the high redox ability. The addition of Cu 2 O can inhibit the photogenerated electron–hole pair recombination, facilitate an effective interface charge transfer, and increase the activity of photocatalysis. Under UV–visible light, this heterojunction displayed impressive ability to degrade for anionic and cationic organic dyes. ⋅OH active species play a major role in the photocatalytic process. Therefore, based on the relevant characterization results, a reasonable photocatalytic mechanism based on Z-scheme heterostructure was established. Moreover, this novel Cu 2 O-UNPs/ZnO SCNRs Z-scheme heterojunction also presents an extraordinary chance for use in waste disposal and purification.
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JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 5
·1-13
·
IF 2.8
Yang Xiao-Mei,Yin Guang-Zhong,Amorós Olga Zafra,Hernández María Arroyo,de la Vega Jimena,Torralba José Manuel
The “catalytic degradation” of metal oxides limits the wide application of PLA when PLA needs to be modified by adding metal oxides to achieve desired properties. Zinc oxide (ZnO) is a common and widely used agent as it can be used for many properties, such as antioxidant, antibacterial, etc. However, detrimental effects often exist on the properties of polymers after introducing the ZnO, due to the catalytic degradation. In this study, we used polydopamine (PDA) to construct ZnO@PDA core-shell submicron particles via the self-polymerization of dopamine (DA) in alkaline solution, aimed to produce a surface functionalization that would be used to control the rate of degradation of PLA by ZnO during thermal processing, and promote the preservation of mechanical properties. PLA with different contents of ZnO and ZnO@PDA were prepared by a simple melt extrusion method. The degradation behavior, mechanical properties and antibacterial activity of ZnO/PLA and ZnO@PDA/PLA were investigated. It was found that the incorporation of ZnO@PDA in PLA at different contents exhibits a dramatic control over the degradation rate when compared to that of the ZnO/PLA with the same filler content. Notably, the T 5% and T 50% of 3%-ZnO@PDA/PLA increased by 36.4 o C and 31.9 o C. GPC results showed the molecular weight of 3%-ZnO@PDA/PLA was only reduced by 15.8% after thermal processing. In addition, 3%-ZnO@PDA/PLA can be 3D-printed smoothly. That is to say, the introduction of ZnO@PDA can increase the processing window of PLA/ZnO composites, providing the possibility for materials that need to be included in civil application. Accordingly, ZnO@PDA/PLA samples showed higher tensile strength and elongation at break than that of corresponding ZnO/PLA samples. Regarding the antibacterial behavior, the ZnO@PDA/PLA have more bacterial growth disability effect against Gram(+) bacteria than that of pure PLA.
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Chemosensors
·
2023
·Vol. 11
·期 4
·210
·
IF 4.2
Na Li,Gengsheng Xu,Manqing Yan,Bensong Chen,Yupeng Yuan,Chuhong Zhu
Surface-enhanced Raman scattering (SERS) spectroscopy has attracted increasing attention due to its high spectral reproducibility and unique selectivity to target molecules. Here, a facile approach is proposed to prepare Ag nanoparticles modified ZnO nanorod arrays (Ag/ZnO NR arrays). Ag nanoparticles were densely decorated on the surface of ZnO nanorods through silver mirror reaction and subsequent seed-assisted electrodeposition. The prepared Ag/ZnO NR arrays can be used as a sensitive, uniform, and repeatable SERS substrate for the rapid detection of organic dye molecules and biomolecules with concentrations higher than the corresponding limits of detection (LODs). The LODs for rhodamine 6G (R6G), 4-aminothiophenol (PATP) and adenine are calculated to be 1.0 × 10−13M, 1.6 × 10−12M and 3 × 10−11M, respectively. The enhancement factor (EF) of the SERS substrate is estimated to be as high as ~2.7 × 108when detecting 10−10M R6G. Particularly, the as-synthesized substrate exhibits high selectivity to multiple components. In addition, the fabricated Ag/ZnO NR arrays can be recycled due to their superior self-cleaning ability and can realize photocatalytic degradation of R6G in water within 1 h driven by UV light, showing that the three-dimensional recyclable SERS substrates have wide applications in environmental pollution monitoring and biomedical analysis.Keywords:surface-enhanced Raman scattering;ZnO nanorod;Ag nanoparticle;detection;silver mirror reaction;electrodeposition
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