ChemistrySelect
·
2025
·Vol. 10
·期 6
·e202405509
·
IF 2
Xinxin Xie,Peilong Jiang,Wenqiang Ma,Chao Feng,Lifan Cai,Guiyou Zhu,Jianwei Guo
Graphical Silane coupling agent surface functionalized ZnO QDs(zinc oxide quantum dots) has been prepared with smaller size and lower tendency to agglomerate. ZnO-KH570 QDs has the best modification effect. When the dosage of ZnO-KH570 QDs is 0.1%, the inhibition rate of ZnO-KH570 QDs/RTV against Escherichia coli and Staphylococcus aureus can reach 99.9%. ZnO QDs (zinc oxide quantum dots) have potential value in the field of silicone rubber due to their excellent antimicrobial properties. However, the poor dispersion of ZnO QDs in silicone rubber limits their application. The surface functionalization of ZnO QDs can improve their dispersion in silicone rubber. This study showed that the surface of ZnO QDs could be effectively functionalized by using different kinds of silane coupling agents KH550 (3-aminopropyltriethoxysilane), KH570 (3-acryloyloxypropyltrimethoxysilane), KH580 (3-mercaptopropyltriethoxysilane), A151 (vinyltriethoxysilane) and HD128 (phenyltriethoxysilane). The surface-functionalized ZnO QDs show a reduction in particle size to 4–5 nm. The number and size of agglomerated particles on the surface of surface-functionalized ZnO QDs/RTV (room temperature vulcanized silicone rubber) composites were significantly reduced. Meanwhile, the surface roughness decreased by 92.10% (KH550), 93.08% (KH570), 91.36% (KH580), 85.43% (A151), and 90.86% (HD128), respectively, and the viscosity was increased by 2.90% (KH550), 4.35% (KH570), 2.90% (KH580), 1.54% (A151), and 3.62% (HD128), respectively. ZnO QDs-KH570 has the best dispersion effect. Furthermore, the antibacterial rate of ZnO QDs-KH570/RTV against Escherichia coli and Staphylococcus aureus achieved 99.9% when the additional amount of ZnO-KH570 QDs was 0.1%, which indicated excellent antibacterial performance and could contribute to the development of silicone rubber medical supplies.
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Limin Bian,Lin Chen,Xiong Shen,Jinhe Wei,Fei Hu,Zhongming Wang,Chenglong Lv,Xin Peng,Qiuyun Ouyang
Nonlinear optical (NLO) properties and environmental stability are two important issues in the application of Rb0.25Cs0.75PbBr3/ZnO nanocomposites for NLO devices. We present an easy-to-operate and efficient approach to improving these two issues. The Rb0.25Cs0.75PbBr3/ZnO nanocomposites were synthesized by a hot injection method. The ZnO, Rb0.25Cs0.75PbBr3 quantum dots (QDs) and Rb0.25Cs0.75PbBr3/ZnO nanocomposites were dispersed into methyl methacrylate (MMA) to fabricate the (ZnO)4/polymethyl methacrylate (PMMA), (Rb0.25Cs0.75PbBr3)4/PMMA, and (Rb0.25Cs0.75PbBr3/ZnO)4/PMMA organic glasses (OGs). The nonlinear absorption (NLA) and nonlinear refraction (NLR) properties of the samples were investigated by using the open-aperture and closed-aperture Z-scan technique. The results showed that the NLO properties of the (Rb0.25Cs0.75PbBr3/ZnO)4/PMMA OG were significantly improved compared with those of (ZnO)4/PMMA and (Rb0.25Cs0.75PbBr3)4/PMMA OGs, which can be attributed to the positive synergistic effects between ZnO and Rb0.25Cs0.75PbBr3 QDs. Due to the protective effect of PMMA, the linear absorption properties of the (Rb0.25Cs0.75PbBr3/ZnO)4/PMMA OG showed little change after 28 days to 4 months. In general, the results demonstrate that Rb0.25Cs0.75PbBr3/ZnO nanocomposites have enormous application potential in NLO devices.
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DOI
高影响因子
Environmental Science-Nano
·
2017
·Vol. 4
·期 12
·2377-2387
·
IF 6.047
Jingjing Du,Yuyan Zhang,Minghui Cui,Jingchao Yang,Zhongdian Lin,Hongzhong Zhang
We investigated the negative effects of ZnO nanoparticles (NPs) on ecosystem function by focusing on the process of leaf litter decomposition in an aquatic ecosystem. In an indoor microcosm experiment, the influence of 3 different sizes (30, 90 and 200 nm) of ZnO NPs at 100 mg L−1 concentration on Populus nigra L. leaf litter decomposition was determined. Exposure to ZnO NPs significantly inhibited the leaf litter decomposition and a strong inhibitory effect occurred on day 10, 17, and 27 in the 90, 30, and 200 nm ZnO microcosms, respectively. After 46 days' exposure of leaf litter, the highest decomposition rate was found in the control microcosms (0.47 m−1), followed by the 200 nm ZnO microcosms (0.37 m−1), the ZnSO4 microcosms (0.36 m−1), the 30 nm ZnO microcosms (0.28 m−1), and 90 nm ZnO microcosms (0.25 m−1), respectively. A significant decrease of the microbial biomass and enzyme activities (acid phosphatase, cellobiohydrolase, N-acetylglucosaminidase, polyphenol oxidase, and peroxidase) was observed in the ZnO NP exposure microcosms. ZnO NPs caused damage to the mycelium of aquatic hyphomycete and altered the composition of the fungal community associated with litter decomposition. In conclusion, the study expanded our understanding of ZnO NP toxicity on decomposition systems in freshwater ecosystems and highlighted the importance of using litter decomposition processes in NPs ecotoxicity assessments.
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高影响因子
POLYMER TESTING
·
2021
·
IF 4.282
Youmei Du,Dequan Ma,Jie Mao,Jianqi Yao,Qin Ma,Jing Lu,Faliang Luo,Chunhui Luo,Lei Li
In the current work, the polypropylene composites filled with a M-T-ZnOw@Ag filler with antibacterial and antistatic properties was firstly synthesized. The composites and the fabricated nanocomposites were characterized using SEM, TEM, XRD, FTIR and XPS techniques. With the addition of M-T-ZnOw@Ag, the antibacterial and antistatic properties of composite materials are greatly improved by the synergistic effect of AgNPs and T-ZnOw. When the filler content is 10 wt%, the antibacterial activity of the composite material against Gram negative ( Escherichia coli ) and Gram positive ( Staphylococcus aureus ) bacterial were 100%. And the surface resistivity was reduced to 5.5 × 10 10 Ω, fell by nearly 7 orders of magnitude compare with the neat PP. Furthermore, the composites showed better mechanical properties . The maximum impact strength of the composites is 56.3% higher than the neat PP. We believe the composite material with antibacterial and antistatic properties could greatly expand the application range of polypropylene materials.
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高影响因子
TALANTA
·
2022
·
IF 6.556
Haohua Yang,Xueqi Zhao,Ziwei Zhang,Pinyi Ma,Xinghua Wang,Daqian Song,Ying Sun
SPR is a mature optical biosensor technology for detecting biomolecular interactions without fluorescence or enzyme labeling. In this paper, we acquire a sensitive SPR biosensor based on [email protected] nanomaterial , and the classical sandwich strategy using biotin-streptavidin for secondary signal amplification system was used to detect human IgG (hIgG). Nano-zinc oxide (ZnO) has the dual characteristics of nanocomposite and traditional zinc oxide, with large specific surface area and high chemical activity. Besides, the gold-coated ZnO nanocrystals improve the optical properties of ZnO and enlarge the loading capacity with better biocompatibility. Therefore, a sensing platform based on [email protected] nanomaterial was constructed on gold film modified with mercaptan. Meanwhile, the biotin-avidin system in SPR sensor field has been rapidly developed and applied. Due to the highly selection of streptavidin (SA) and biotin interact with each other, GNRs-SA-biotin-Ab 2 (GSAB-Ab 2 ) were constructed to obtain the secondary enhancement of SPR signal. The influences of experimental conditions were also discussed. With optimal experimental conditions, introducing GSAB-Ab 2 conjugate combined with a sandwich format, the resulting SPR biosensor provides a favourable range for hIgG determination of 0.0375–40 μg mL −1 . The minimum detection concentration of hIgG that can be obtained by this method is approximately 67-fold lower than the conventional SPR sensor based on gold film. The sensitivity of SPR biosensor is significantly improved in a certain range.
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DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Xiaofan Zhai,Peng Ju,Fang Guan,Yadong Ren,Xin Liu,Nan Wang,Yimeng Zhang,Jizhou Duan,Chuanxing Wang,Baorong Hou
Zinc oxide with the morphology of nanopillar is promising marine antifouling materials as they can kill adhered bacteria and fungi. The zinc oxide with the morphology of nanopillar has shown super-antibacterial properties on galvanized steel , which makes ZnO/Zn nanopillar films promising in marine antifouling and antimicrobial corrosion. Thus, an efficient approach to coat ZnO/Zn nanopillar films on steel is of great significance. The electrodeposition method is a universal method for both ZnO crystals and galvanized coatings, and it can control the morphologies and structures of the resultant films. Therefore, in this study, capsaicin was added into an alkaline electrolyte to induce the formation of ZnO nanopillars. Due to capsaicin addition to the electrolyte, ZnO/Zn nanopillar films were obtained in a single cathodic electrodeposition. The added capsaicin in the electrolyte was absorbed on the electrodepositing surface by the functional –NH– groups in amide bond. The Zn(OH) 4 2− diffusion was promoted by negatively shifted electrodepositing potential. The scanning electron microscopy (SEM) and X-ray diffraction (XRD) results illustrate that regular ZnO nanopillars were obtained when the capsaicin concentration was 0.6 g L −1 in the electrolyte. The resultant ZnO/Zn nanopillar films showed high antibacterial properties in Escherichia coli suspended solutions and relatively low living bacterial coverage, indicating promising application in marine antifouling. Electrochemical evaluation revealed that the obtained capsaicin-induced ZnO/Zn nanopillar films exhibited significantly enhanced corrosion resistance in a sulfate-reducing bacteria (SRB) medium. Moreover, the results illustrate that adding 0.6 g L −1 concentration of capsaicin in the electrolyte yielded the best films, which featured the lowest bacterial coverage and highest corrosion resistance.
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高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2020
·
IF 2.463
Jing Liu,Weiyan Sun,Jie Bai,Chunping Li
Nitrogen-enriched carbon nanofibers carried Sn and Zn bimetallic composites with outstanding storage capacity and superior mechanical strength were facilely fabricated by electrospinning technology, amidoximation reaction modified polymer fiber, ion coordination technique introduced Zn 2+ and carbonization of composite nanofibers. The introduction of amidoxime groups not only enhanced the coordination ability with Zn 2+ , but also increased the content of nitrogen element. In addition, due to the different thermal stability of amidoxime groups, the regulation of different types of nitrogen content can be achieved by changing the carbonization temperature, and the influence of nitrogen on the electrochemical performance was explained. At the same time, due to the role of carbothermal reduction , tin in different valence ratios was obtained and its contribution to the energy storage performance of supercapacitors was explored. Benefiting from high nitrogen-enriched level, mutation between Sn 2+ and Sn 4+ oxidation state and synergistic mechanism of ZnO-SnO x bimetal, the prepared composite had a high specific capacitance of 810.89 F g −1 at a current density of 0.5 A g −1 , outstanding cycling stability of 119% over 5000 cycles in 4 M KOH electrolyte. What’s more, we conducted a two-electrode test with the energy density of 50 Wh kg −1 at a power density of 374 W kg −1 . In consequence, this novel design is believed to have great potential in high energy and power density of energy storage devices in the future.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Jinyu Huang,Jiaxi Zhou,Zhenhua Liu,Xuejin Li,Youfu Geng,Xiaoqing Tian,Yu Du,Zhengfang Qian
ZnO nanorods doped by different amount of Au and Pd were successfully synthesized via one-step microwave-assisted hydrothermal method. The structure, morphology and composition of the as-synthesized products were characterized by X-ray diffraction (XRD), field-emission electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Gas sensors based on ZnO and Au/Pd-doped ZnO nanorods were fabricated and their gas sensing properties were tested for various gases. The results indicate that the incorporation of Au and Pd elements can greatly enhance the gas sensing properties of ZnO sensors. Specifically, the sensor based on 2.0 wt% Au-doped ZnO exhibits the highest response, quickest response and recovery characteristics, best selectivity, low operating temperature, as well as good long-term stability towards acetone. After incorporation of Au (2.0 wt%), the detection limit of Au-doped ZnO sensor decreases to 5 ppb and the response increases to 17 under 1 ppm acetone at 150℃, which is more than triple the responses of ZnO sensor. The results demonstrate that the developed Au-doped ZnO sensor has great potential for ppb-level acetone detection in human breath for diagnosing diabetes.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2013
·
IF 2.39
Shaobo Shi,Yu Yang,Jianping Xu,Lan Li,Xiaosong Zhang,Guo-Hua Hu,Zhi-Min Dang
Zn 1− x Co x O (0 ⩽ x ⩽ 0.06) nanorods were fabricated by hydrothermal method. The effect of Co doping on the morphology, crystalline structure, optical and magnetic properties of the samples was investigated. The length of obtained ZnO nanorods increases with the increasing Co concentration. Based on the results of X-ray diffraction and Raman spectra, it is confirmed that a small amount of Co ions are incorporated into ZnO lattice. The segregated phase of Co 3 O 4 was detected at x > 0.01. The absorption and photoluminescence spectra reveal the d–d electronic transitions of tetrahedrally coordinated Co 2+ in ZnO host. Co doping induces fluorescent quenching of the visible emission bands related to surface states and defect states in the Co-doped ZnO nanorods. Weak room temperature ferromagnetism was observed in the samples with x = 0.01 and then paramagnetic characteristics of the samples with x > 0.01.
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DOI
高影响因子
Journal of CO2 Utilization
·
2022
·
IF 8.321
Xin Zong,Yingmin Jin,Yumeng Li,Xuebai Zhang,Shiji Zhang,Haijiao Xie,Jinqiu Zhang,Yueping Xiong
Electrochemical CO 2 reduction (ECR) is a promising approach to realize carbon neutral and energy sustainability , which is still impeded by the low selectivity and activity for application. Defect engineering of electrocatalysts , especially oxygen vacancy introduction into metal oxide materials has been proved to be an effective strategy to satisfy thermodynamic condition and improve kinetics for ECR. Herein, we synthesize oxygen vacancy-enriched ZnO nanoparticle catalysts for efficient ECR through electrospinning technique using particular precursor. Characterizations reveal that the utilization of Zn(CH 3 COO) 2 precursor contributes to the generation of oxygen vacancies in ZnO catalysts which enhances CO 2 adsorption and stabilizes the intermediate. In a flow cell configuration, a current density of 150 mA cm −2 and a CO Faradic efficiency > 80% can be obtained for ZnO nanoparticle catalysts (p-ZnO-800), which is meaningful for industry.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
·
2017
·Vol. 28
·期 1
·1-8
·
IF 2.325
Wang Shilei,Wu Jie,Yang Hao,Liu Xiangyu,Huang Qiaomu,Lu Zhong
Dental caries is a widespread disease mainly caused by the anaerobic oral pathogen Streptococcus mutans ( S. mutans ). Ag/ZnO nanocomposite is an efficient antibacterial agent because of its high antibacterial activity and low cytotoxicity. In this study, rod-like Ag/ZnO nanocomposite was synthesized through a deposition-precipitation method and characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The activity of Ag/ZnO nanocomposite against S. mutans was evaluated by determining the minimal inhibitory concentration, minimum bactericidal concentration and growth inhibition curve. The results showed that Ag/ZnO nanocomposite displayed higher activity against S. mutans compared with pure ZnO nanorods. Moreover, the antibacterial mechanism was investigated by determining the bacterial membrane potential, release of K + , intracellular reactive oxygen generation and lipid peroxidation. Disruption of membrane function and oxidation of biomacromolecules played important role in the antibacterial action of Ag/ZnO nanocomposite. This work proposes a potentially effective dental antibacterial agent against the dental caries-causing S. mutans .
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DOI
PubMed
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 10
·835
·
IF 3.504
Jiaqi Chen,Shaolong Huang,Yaojia Long,Jiahao Wu,Hui Li,Zhao Li,Yu-Jia Zeng,Shuangchen Ruan
Photocatalysis is a green technique that can convert solar energy to chemical energy, especially in H2production from water splitting. In this study, ZnO and red phosphorus (ZnO/RP) heterostructures were fabricated through a facile calcination method for the first time, which showed the considerable photocatalytic activity of H2evolution. The photocatalytic activities of heterostructures with different ratios of RP have been investigated in detail. Compared to bare ZnO, ZnO/RP heterostructures exhibit a 20.8-fold enhancement for H2production and furthermore overcome the photocorrosion issue of ZnO. The improved photocatalytic activities highly depend on the synergistic effect of the high migration efficiency of photo-induced electron–hole pairs with the inhibited charge carrier recombination on the surface. The presented strategy can also be applied to other semiconductors for various optoelectronics applications.Keywords:photocatalysis;H2evolution;red P;ZnO;heterostructure
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高影响因子
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