ACS Applied Materials & Interfaces
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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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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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Materials Today Chemistry
·
2026
·
IF 7.4
Mengjiao Zhao,Xianjie Xu,Sheng Huang,Xiuquan Gu,Wufan Xuan
The CsCu 2 I 3 /ZnO-heterojunction-based sensor enables H 2 S detection with a response value of 0.83 at 1 ppm, with response and recovery times of 240 s and 834 s. • The CsCu 2 I 3 /ZnO heterojunction improves structural stability and ensures continuous and stable sensor response. • The CsCu 2 I 3 /ZnO-heterojunction-based sensor achieves self‐calibration for different H 2 S concentrations with 99% detection accuracy. Hydrogen sulfide (H 2 S), a colorless and toxic gas, poses serious health risks upon prolonged exposure, including damage to respiratory and cardiovascular systems, which can be fatal in severe cases. Current H 2 S sensors suffer from limited response, particularly in detecting ultra‐low concentrations. To overcome this limitation, we developed a CsCu 2 I 3 /ZnO heterojunction‐based gas sensor via vacuum evaporation. This composite material enables highly responsive H 2 S detection at room temperature. The heterojunction not only improves structural stability but also ensures continuous and stable sensor response. At 1 ppm H 2 S, the sensor exhibits a sensitivity of 0.72, the response value of 0.83, the limit of detection (LOD) of 14.25 ppb, with response and recovery times of 240 s and 834 s, respectively. Furthermore, an intelligent calibration framework was developed by integrating Gramian Angular Summation Fields with the AlexNet algorithm, operating as a robustness enhancer. The sensor achieves self‐calibration for different H 2 S concentrations with 99.33% detection accuracy through 5-Fold Cross-Validation, significantly enhancing quantification capability. These results demonstrate the excellent potential of our CsCu 2 I 3 /ZnO-heterojunction-based sensor in H 2 S monitoring. The combination of responsive materials with machine learning offers a robust strategy for advancing ultra‐low concentration gas detection technologies.
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PACKAGING TECHNOLOGY AND SCIENCE
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2026
·
IF 4.7
Wenting Gao,Bin Mu,Fangfang Yang,Yalong Li,Yu Tang,Zhihe Luo,Aiqin Wang
The potential of chitosan (CS) films for the preservation has been explored, and it is recognized as one of the promising approaches to enhancing the comprehensive capability of CS films for food control after incorporation of functional nanofillers. Herein, Rhodiola rosea extract/ZnO/palygorskite (RRE/ZnO/Pal) nanocomposites were facilely prepared and incorporated into CS matrix to obtain RRE/ZnO/Pal/CS (RZPC) composite films, in which ZnO/Pal nanocomposites were synthesized by a green phyto-mediated method followed by loading of R. rosea extract via a semi-dry grinding process to form organic/inorganic bioactive nanocomposites. The composite films exhibited significantly enhanced antioxidant, antibacterial, mechanical and UV-shielding properties compared with the pure CS film, as well as the maximum scavenging activities on hydroxyl radicals and 2,2-diphenyl-1-picrylhydrazine radicals of composite films were 92.85% ± 1.59% and 56.89% ± 0.56%, respectively. The antibacterial ratios of composite films containing 6.25% of RRE/ZnO/Pal nanocomposites were 94.92% ± 2.67% and 95.48% ± 2.08% for E. coli and S. aureus , respectively. In addition, the RZPC films effectively delayed browning and deterioration of bananas. This study provides a green method for construction of bioactive nanocomposites and new strategy to design multifunctional CS films for food preservation based on the synergistic effect of organic and inorganic components.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 47
·期 1
·118759
·
IF 6.3
Mingfei Cheng,Yiyang Cai,Changzhi Yin,Xiaoqiang Song,Jiaqing Yang,Weicheng Lei,Zihang Chen,Yaqing Hu,Yaodong Liu,Xiaoxiao Li,Wenzhong Lu,Wen Lei
The poor sinterability and intrinsically positive τ f of BaZr(PO 4 ) 2 ceramics were addressed by introducing ZnO as a sintering aid and property modifier. In a conventional solid-state reaction route, ZnO promoted liquid-phase sintering through the in situ formation of BaZn 2 (PO 4 ) 2 , enabling near-full densification (>99% relative density) at 1250 °C. The ZnO content strongly affected phase evolution, microstructure, and microwave dielectric properties. The Q × f value reached a maximum at ∼4 wt% ZnO and then decreased because of losses associated with the secondary phase and increased grain-boundary density. Notably, τ f could be systematically tuned from positive to negative values through compensation by the negative- τ f BaZn 2 (PO 4 ) 2 phase. The optimized composition (4 wt% ZnO) exhibited ε r ≈ 10.1, Q × f ≈ 36,300 GHz, and τ f ≈ +0.4 ppm/°C. These results identify a promising microwave dielectric material that can be densified at a lower temperature and establish a practical strategy for tailoring τ f in phosphate ceramics through controlled secondary-phase formation.
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Mu Yang,Yingdan He,Yuxuan Chen,Jiatong Jiang,Xinru Kong,Kejian Ding
A humic substance/Ti 3 C 2 /ZnO composite was developed to enhance photoelectrocatalytic degradation of tetracycline. • Humic substances derived from livestock manure and straw promoted tetracycline enrichment and interfacial electron transfer. • The integrated system removed 95.2% of tetracycline in water and achieved effective degradation in soil. • The degradation process is governed by coupled adsorption enrichment and in situ photoelectrocatalysis. The challenge of degrading tetracycline (TC) in nature was addressed herein by developing a photoelectrocatalytic system using a humic substance (HS)-modified Ti 3 C 2 /ZnO nanocomposite. The HS which was extracted from animal organic waste facilitated the spontaneous physical adsorption of TC and promoted electron transfer. Concurrently, the Ti 3 C 2 /ZnO Schottky junction enhanced separation of photogenerated electron-hole pairs. This synergy resulted in a TC removal efficiency of 95.2% in aqueous solution within 100 min, and 40.2% in simulated soil environments. Combined with theoretical calculations, the underlying degradation mechanism was elucidated. This study presents a green and efficient strategy for antibiotic remediation utilizing natural organic waste. Download: Download high-res image (156KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Tianxiang Gao,Yan Zhu,Jian Zhao,Zhe Yang,Tao Shen,Mingrong Dong,Jinkun Liu,De-Quan Yang
Hierarchically structured composite hydrogels were fabricated by integrating a poly(vinyl alcohol)–hyaluronic acid (PVA–HA) network with a medical‑grade hydroentangled nonwoven (NW) scaffold, and trace amounts of ZnO/Fe 2 O 3 nanoparticles (ZnO/Fe 2 O 3 NPs, 2500/100 ppm). A simple dip‑pad–freeze–thaw process produced an interpenetrating hydrogel–fiber architecture that substantially reinforced the soft matrix while preserving high water uptake. Transmission electron microscopy revealed ultra‑small Fe 2 O 3 NPs (2–3 nm) homogeneously dispersed within the hydrogel network. These nanoparticles acted as nano‑spacers and hydrophilic centers, respectively, thereby modulating the polymer network density and free volume. Consequently, the equilibrium swelling ratio increased from ∼575% for the pristine PVA–HA hydrogel, to ∼650% for the ZnO/Fe 2 O 3 ‑loaded composite, while an appropriate water vapor transmission rate was maintained. X‑ray photoelectron spectroscopy and electron spin resonance measurements indicated that ZnO/Fe₂O₃ heterojunctions promoted efficient charge separation and enhanced reactive oxygen species (ROS) generation at the hydrogel–bacteria interface. This led to > 99% killing efficiency against both Escherichia coli and Staphylococcus aureus at ultra‑low nanoparticle loadings, without compromising fibroblast viability. Overall, this study demonstrates how nanoscale inorganic inclusions and a fibrous scaffold can be combined to tailor the colloidal network structure, transport properties, and interfacial antibacterial performance of PVA‑based hydrogels, outlining a versatile route towards multifunctional soft materials.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Lingchao Wang,Yun Guo,Xiaofan Li,Hui Guo,Yinzhong Liu,Xiaotao Zhu,Yiyu Qiao,Xuechun Yang
Developed a unique Gd-doped Tourmaline@MOF-ZnO nanostructure that integrates a polarized core with a highly porous shell. • Achieved a massive response (890.31 to 100 ppm), fast kinetics (34 s/18 s), and a ppb-level detection limit (56.63 ppb) for n-butanol at 240 °C under UV activation. • The gas-sensing performance is significantly boosted through the synergistic combination of the MOF-derived porous architecture, Tourmaline polarization, Gd-induced oxygen vacancies, and UV activation. Reliable monitoring of volatile organic compounds (VOCs) demands gas sensors with fast response, high sensitivity, and excellent selectivity. To this end, we designed a novel gas-sensing material based on a Gd-doped Tourmaline@MOF-ZnO core–shell nanostructure. This structure integrates a Tourmaline core with a porous MOF-derived ZnO shell, further enhanced via Gd doping. The gas sensing properties were evaluated under both dark condition and UV activation. At the operating temperature of 240 °C with UV activation, the optimized sensor with 0.08 wt% Gd and 5 wt% Tourmaline (denoted as 0.08 wt% Gd-5 wt% TML@ZnO) exhibited a remarkable response of 890.31 to 100 ppm n-butanol. This value is 9.96 times higher than that of the pristine MOF-derived ZnO (89.43). Moreover, the sensor demonstrated fast response/recovery times (34 s/18 s), high selectivity, excellent long-term stability, and a low detection limit of 56.63 ppb. The outstanding performance underscores the considerable promise of the optimized Gd-doped Tourmaline@MOF-ZnO core–shell composite for practical ppb-level VOCs monitoring. This work provides an effective strategy for designing high-performance gas sensors through the synergistic integration of rare-earth doping and core–shell structural design. Download: Download high-res image (214KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）