CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Jiafa Chen,Zifan Niu,Xuehua Zhang,Penghui Yao,Yicheng Zhao,Yongdan Li
Photocatalytic CO 2 N -formylation of amines promises a clean and sustainable approach for CO 2 conversion. Conventional ZnO photocatalyst with high redox capability and good stability suffers from low absorption efficiency of visible light and severe recombination of photogenerated charge carriers. In this work, we present the decoration of ZnO nanosheets with bimetallic PtNi nanoparticles, demonstrating a high photocatalytic activity towards CO 2 N -formylation of benzylamine. The CO 2 adsorption capacity of ZnO is significantly improved with the modification of Pt and Ni. Meanwhile, the localized surface plasmon resonance effect of Ni enhances the absorption ability of visible light remarkably. Furthermore, the electron transfer paths from ZnO to the metals and from Ni to Pt within the bimetallic nanoparticles are proved by experimental and theoretical calculation results, which improve the separation efficiency of photoinduced electron-hole pairs. After 24 h reaction under visible light at room temperature, a benzylamine conversion of 85.0% is achieved with a high selectivity of 99.4% towards N -benzylformamide. The PtNi/ZnO photocatalyst also shows good cycling stability.
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Discover Nano
·
2026
·Vol. 21
·期 1
·5
·
IF 4.5
Jin Lei,Fan Junping,Zhu Xin,Wang Shen,Yang Yaoxi,Li Dongfang
In this work, a solvent evaporation casting approach was used to prepare ZnO@PDA/Zein nanocomposite films, where polydopamine-modified zinc oxide nanoparticles (ZnO@PDA NPs) were incorporated into a zein matrix as the film-forming agent. This nanocomposite film adhered uniformly to the surface of oral therapeutic instruments and exhibited good antibacterial effects. At a doping concentration of 1.2 mg/mL, the film exhibited an antibacterial effect against Gram-negative bacteria such as Escherichia coli (E. coli) , and at a doping concentration of 0.6 mg/mL, the film exhibited antibacterial effects against Gram-positive bacteria such as Staphylococcus aureus (S. aureus) and Streptococcus mutans (S. mutans) , along with good biocompatibility. This study introduces a novel ZnO@PDA/Zein nanocomposite film with enhanced antibacterial efficacy and biocompatibility, offering a promising solution for preventing biofilm formation on oral therapeutic instruments.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Weiwei Guo,JiaYi,Fan Liu,Lianfeng Xu
Triethylamine, a typical volatile marker gas produced during food spoilage, serves as a key indicator of food freshness. Therefore, real-time monitoring of its concentration is of great significance for evaluating food freshness. We synthesize the NiCo 2 O 4 /ZnO using hydrothermal method for triethylamine detection. To characterize the as-prepared samples, XRD, XPS, SEM, XPS, and EIS are used. Among the pure NiCo 2 O 4 , ZnO, and NiCo 2 O 4 /ZnO, the NiCo 2 O 4 /ZnO exhibits (50.2) toward 30 ppm triethylamine, which is around six times higher than that of pure NiCo 2 O 4 at 250 °C. Furthermore, the NiCo 2 O 4 /ZnO composite exhibits rapid response-recovery kinetics, excellent humidity stability, and a favorable selectivity toward triethylamine. The enhanced gas-sensing performance can be attributed to the increased specific surface area, the formation of p–n heterojunctions, and the synergistic interaction between NiCo 2 O 4 and ZnO. These results indicate that the integration of NiCo 2 O 4 with ZnO to create NiCo 2 O 4 /ZnO emerges as an effective approach to enhance the sensing performance of triethylamine.
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Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 5.7
Weiling Bao,Jinyun He,Xinyu Zhang,Yanwu Wang,Fei Long
Hierarchical ZnO/CaCO 3 was successfully fabricated using CaCO 3 as a template. • Low-cost hydrothermal-calcination synthesis strategy was applied. • Excellent photocatalytic degradation of RhB, MB, and TC under sunlight. • Superior cycling stability and reusability. Three-dimensional hierarchical ZnO-based nanostructures have garnered considerable attention due to their unique optoelectronic characteristics. However, their synthesis typically requires complex procedures and expensive hydrophobic surfactants. To overcome this challenge, we developed a straightforward and economical hydrothermal-calcination approach to fabricate hierarchical mesoporous ZnO/CaCO 3 nanostructures. Environmentally friendly nano CaCO 3 , synthesized via a simple precipitation method, were used as growth templates for flower-like Zn 5 (CO 3 ) 2 (OH) 6 . After calcination, a flower-like ZnO/CaCO 3 structure composed of mesoporous nanosheets was obtained. This unique architecture endowed the material with a high BET surface area and a favorable mesoporous structure, resulting in outstanding photocatalytic performance. Under simulated solar light irradiation for 90 min, the material achieved degradation rates of 99.9% for methylene blue (MB), 94.9% for tetracycline (TC), and 98.3% for rhodamine B (RhB). This study presents a low-cost strategy for synthesizing hierarchical semiconductor nanostructures with tailored interfacial composition for high-performance photocatalytic applications. Download: Download high-res image (299KB) Download: Download full-size image
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EUROPEAN JOURNAL OF PHARMACEUTICS AND BIOPHARMACEUTICS
·
2026
·
IF 5
Kuan-Wen Huang,Cheng-Rung Huang,Kuo-Chung Lan,Chien-Hsiang Chang,Yu-Fon Chen
Kiwifruit genomic DNA was successfully used as a sustainable biomaterial scaffold via BAC cross-linking. • The ZnO@Car@DNA-BAC system enables precision antibacterial release via bacterial nuclease. • Negative ZnO NPs excel in ROS generation, while positive NPs enhance bacterial membrane affinity. • Dual-layered encapsulation mitigates ZnO toxicity, preserving Raw264.7 and HaCaT spheroids viability. • The nano-platform effectively suppresses S. aureus and extends survival in C. elegans . Developing localized, smart antibacterial systems is crucial to overcome the limitations of traditional antibiotics. Here, we report the synthesis of a DNase-responsive nano-platform, ZnO@Car@DNA-BAC, using kiwifruit-derived genomic DNA as a sustainable scaffold. The system is engineered by cross-linking DNA with N,N’-Bis(acryloyl)cystamine (BAC) and incorporating L-carnosine (Car) functionalized ZnO nanoparticles (NPs), enabling targeted therapeutic release triggered by bacterial nucleases. Our findings reveal that while nanoparticle surface charge dictates the immediate therapeutic outcome in terms of bacterial membrane affinity, electron paramagnetic resonance (EPR) analysis confirmed ROS-mediated oxidative stress as a secondary killing mechanism. Crucially, the nanocomposite exhibited excellent biocompatibility in 3D spheroid models derived from Raw264.7 and HaCaT cells. The dual-layered encapsulation effectively mitigated the intrinsic toxicity of ZnO NPs, resulting in significantly higher IC 50 values and preserved metabolic activity within the 3D micro-tissues compared to bare nanoparticles. Following the tissue-level safety validation, the comprehensive nano-platforms were tested in a C. elegans infection model. The results showed a significant suppression of S. aureus colonization and prolonged host survival, regardless of the initial core charge. This study provides a strategic framework for designing stimuli-responsive, charge-tunable biomaterials for precision infection control, balancing robust antibacterial performance with high tissue-level safety. Download: Download high-res image (223KB) Download: Download full-size image
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SURFACE AND INTERFACE ANALYSIS
·
2026
·
IF 2.7
Yiqi Zheng,Mingchao Zheng,Jianfeng Lan,Xiaoying Li,Tong Lou,Bo Wu,Xianhui Zhang,Jiangfan Chang
Natural gas pipelines face severe corrosion and hydrate deposition. Superhydrophobic coatings have potential but suffer from poor mechanical durability. Herein, a dopamine modification strategy is proposed, in which dopamine self-polymerizes on nano-ZnO to form a polydopamine (PDA) layer, improving epoxy compatibility and adhesion, thereby enhancing mechanical robustness and cohesion. A superhydrophobic coating (DZn) was fabricated by incorporating PDA-modified nano-ZnO into epoxy resin. DZn showed a water contact angle of 153.85° and a hysteresis of 3.11°. After 30 abrasion cycles, DZn retained its hydrophobicity, indicating excellent mechanical durability. DZn also achieved the highest adhesion grade (5B) and retained fouling-release capability under both acidic (pH = 1) and alkaline (pH = 13) conditions. EIS confirmed enhanced corrosion resistance, with an R c value of 9.18 × 10 9 Ω · cm 2 after 50 days of immersion, significantly higher than the control. This sustained R c indicates long-term stability of the trapped air layer, crucial for inhibiting hydrate nucleation and adhesion. This study demonstrates that dopamine modification effectively improves superhydrophobic coating performance, showing strong potential for internal pipeline protection against corrosion and hydrate deposition.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Xueting Fang,Ninghao Fang,Yanping Xie,Kaiyuan Liu,Li Cui,Ying Liu,Ping Wang,Qiang Wang
Antimicrobial cotton fabrics are essential for preventing bacterial infections. This study develops a water-resistant antimicrobial cotton fabric by constructing a dragonfly wing-inspired ZnO nanorod array on fiber surfaces via a hydrothermal method, followed by silver doping and hydrophobic modification with HDTMS. The resulting HDTMS-Ag3/ZnO/Cot exhibits excellent antibacterial activity, achieving >99.99% bactericidal rates against E. coli and S. aureus. Notably, this high efficiency remains stable even after 50 accelerated washing cycles, demonstrating exceptional durability. The hydrophobic modification imparts a water contact angle of 158.4°, which significantly reduces bacterial adhesion by 91.7% for E. coli and 91.4% for S. aureus. Furthermore, the fabric shows effective antibiofilm activity and no cytotoxicity. This work presents a simple and efficient strategy for fabricating durable, multifunctional antibacterial textiles, with promising applications in medical protection, high-performance apparel, and sportswear.
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MACROMOLECULAR BIOSCIENCE
·
2026
·Vol. 26
·期 9
·e70245
·
IF 4.2
Ayijiamila Mohetaer,Shan Rong,Zhang Jing,Wang Yuxin,Wan Xiaofei,He Qian,Ma Chunquan,Liu Bin,Song Fuxiang
Alveolar ridge deficiency remains a significant clinical challenge in dental implantology, often necessitating bone augmentation procedures. While autogenous bone grafting is considered the gold standard, its limitations, including donor site complications and limited availability, have prompted the development of alternative bone graft materials. In this study, we fabricated a novel polycaprolactone (PCL)/β-tricalcium phosphate (β-TCP)@zinc oxide (ZnO) composite scaffold via direct ink writing (DIW) three-dimensional (3D) printing. The scaffold integrates a biomimetic porous architecture with a controlled ion-release strategy to enhance osteogenic performance. The characterization of the material confirmed excellent chemical stability, hydrophilicity, and tunable degradation behavior. The incorporation of ZnO facilitated the sustained release of bioactive ions (Ca 2+ , PO 4 3− , and Zn 2+ ), significantly improving the scaffold's bioactivity. In vitro assessments revealed that the scaffold with 2% ZnO (PTZ-2) exhibited optimal cytocompatibility and osteogenic differentiation capacity, promoting alkaline phosphatase activity and mineralized nodule formation in MC3T3-E1 cells. In a rat cranial defect model, the PTZ-2 scaffold achieved approximately 95% new bone area after 12 weeks. Histological analysis further confirmed the presence of continuous, highly mineralized bone matrix with excellent osseointegration capability. These findings collectively indicate that the 3D-printed PCL/β-TCP@ZnO composite scaffold has great potential for clinical translation in bone defect regeneration.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2015
·Vol. 33
·期 7
·976-987
·
IF 1.835
Li Mei,Li Gu,Zhang Zi-shou,Dai Xin,Yang Yue-wen,Mai Kan-cheng
To enhance the ultraviolet resistance of ZnO based polymer materials, ZnO-supported mesoporous zeolite (M-ZnO) was prepared and characterized by atomic absorption spectroscopy and scanning electron microscopy. The ultraviolet resistance, crystallization behavior and melting characteristics of ZnO and M-ZnO filled PPR composites were compared by FTIR spectra and differential scanning calorimetry. The ultraviolet resistance of M-ZnO filled PPR composites is higher than that of ZnO filled PPR composites, indicating higher ultraviolet resistance of M-ZnO than that of ZnO. The crystallization temperatures of mesoporous zeolite filled PPR were higher than those of M-ZnO and decreased with increasing UV-irradiation time. But the crystallization temperatures of M-ZnO filled PPR composites were not influenced by UV-irradiation time. The ZnO supported on the surface of zeolite is effective in enhancing the ultraviolet resistance of ZnO based polymer materials.
研究领域:
高分子材料科学
·
功能复合材料
·
材料老化与稳定性
·
纳米复合材料
·
聚合物改性
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2017
·Vol. 33
·期 8
·850-855
·
IF 2.764
Nannan Bi,Lei Zhang,Qiang Zheng,Fei Zhuge,Jiupeng Li,Xuan P.A. Gao,Juan Du
A vapor deposition method was applied to synthesize zinc oxide (ZnO) nanowires and nanorods with diameter from 40 nm to 500 nm, length from 1 μm to 70 μm by adjusting the flow rate of argon, oxygen and the pressure during growth. Results of scanning electron microscopy (SEM) and high resolution transmission electron microscopy (TEM) proved the hexagonal wurtzite structure of the synthesized ZnO nanowires or nanorods , which grow along the <0001> direction. The results show that the growth conditions strongly impact the morphology, growth rate and optical properties of the ZnO nanostructures . The ZnO nanowires with small diameters tend to show stronger ultraviolet (UV) light emission from the electron-hole recombination near band edge in photoluminescence (PL), while those with larger diameters tend to exhibit PL spectra dominated by the broad green light emission due to the defects.
研究领域:
材料科学
·
纳米技术
·
半导体物理
·
光电子学
·
功能材料
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Qisheng Wang,Qing Cai,Guanbin Wen,Xingkun Liang,Zhengfang Yang,Qianqian Guo,Qing Wang,Bin Zhang
In this study, hexagonal prismatic CaO/ZnO composites were successfully synthesised and exhibited efficient, long-lasting antimicrobial activity against Escherichia coli ( E. coli ). Density functional theory calculations, combined with photoelectrochemical and optical property analyses, demonstrated that the CaO/ZnO heterojunction significantly enhanced electron–hole separation efficiency compared with pure CaO and ZnO. Scavenger experiments revealed a time-dependent shift in the dominant antimicrobial mechanism. In the short term (Day 1, high alkaline environment), the ionic (alkaline) bactericidal mechanism (76.9%) was dominant, while reactive oxygen species (ROS)-mediated killing (14.2%) acted synergistically. In the long term (Day 15, near-neutral environment), the ROS-mediated bactericidal mechanism became dominant (45.3%), working synergistically with the sustained ionic bactericidal effect (41.3%). Lipid peroxidation and bacterial respiratory chain dehydrogenase activity assays confirmed that ROS generated by the CaO/ZnO composites caused severe damage to both the outer membrane and intracellular physiological functions of E. coli . Long-term antimicrobial tests, continuous pH monitoring and time-dependent scavenger experiments were conducted to elucidate the prolonged antimicrobial mechanism. As the alkaline effect of CaO gradually diminished, the contribution of ROS-mediated bactericidal activity in the CaO/ZnO composite increased significantly compared with pure CaO and ZnO, thereby maintaining stable antimicrobial activity. Three antimicrobial sponges were fabricated using CaO/ZnO as the active agent, all of which exhibited excellent antimicrobial performance. Among them, only CaO/ZnO@PU demonstrated optimal cyclic stability, maintaining 100% antimicrobial efficiency over five consecutive cycles, and achieved complete bacterial inactivation within 30 min in dynamic water filtration experiments. This study presents a promising antimicrobial material and provides clear insights its time-dependent antimicrobial mechanism.
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CATALYSIS TODAY
·
2023
·
IF 5.3
Hangjie Li,Liang Wang,Feng-Shou Xiao
Cu/ZnO/Al 2 O 3 catalyst has been widely studied in the hydrogenation of CO 2 to methanol, but it still suffers from insufficient catalyst stability and methanol selectivity. Herein, we overcome these issues by introducing the silica promoter to the catalyst, achieving the Cu/ZnO/Al 2 O 3 /SiO 2 (CZAS) catalysts with significantly improved methanol selectivity and catalyst durability. Characterizations of samples showed that the silica species efficiently hindered the sintering of Cu nanoparticles during the catalysis, exhibiting constant performances in the continuous tests. In addition, the silica also electronically modulated the Cu nanoparticles that result in abundant Cu δ+ species in the catalyst, which minimized the methanol decomposition to improve the methanol selectivity, compared with the silica-free Cu/ZnO/Al 2 O 3 catalyst. As a result, the CZAS exhibited CO 2 conversion at 12.6 % and methanol selectivity at 85.1 %, giving a one-pass methanol yield at 10.7 %. The strategy in this work might provide an efficient route for enhancing the current industrial catalysts.
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