SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Shuang Li,Yuchi Zhang,Le Han,Xianliang Li,Yan Xu
Hierarchical kiwifruit-like ZnO/ZnFe 2 O 4 heterostructures were prepared using Fe-doped Zn-based metal organic framework as a precursor combined with a subsequent thermolysis strategy. The hierarchical ZnO/ZnFe 2 O 4 composites featured well-organized nanosheet-like surface morphology assembled from interpenetrated ZnO and ZnFe 2 O 4 nanoparticles, facilitating the diffusion and surface reaction of specific gas molecules in gas sensing applications. As expected, a comparative study of triethylamine gas sensing performance between the kiwifruit-like ZnO/ZnFe 2 O 4 heterostructures and single-component ZnO proved that the former composites showed improved triethylamine gas sensitivity with R a /R g = 40.5 at an operating temperature of 200 °C. Specifically, the ZnO/ZnFe 2 O 4 heterostructure exhibited a fast response/recovery time of 32 s/41 s and excellent long-term stability of up to one month towards gaseous triethylamine. The enhanced trimethylamine gas sensing mechanism is ascribed to the intriguing kiwifruit-like hierarchical architecture of ZnO/ZnFe 2 O 4 heterojunction with ultrathin nanosheets on its surface and abundant accessible reactive sites interacting with the target gas molecules. This work offers new opportunities for rationally designing gas sensing materials by assembling the multi-component architectures.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2017
·Vol. 121
·期 12
·
IF 2.068
Wu Lei,Dai LiDong,Li HePing,Hu Haiying,Zhuang YuKai,Liu KaiXiang
We present a pressure-induced amorphization for pure and 0.5 mol. % Bi 3+ -doped Zn 2 GeO 4 samples, measured by high pressure Raman spectroscopy and high resolution transmission electron microscopy. Pressure-induced conductivity switching phenomena were discovered for both samples at around ∼7.01 GPa and ∼11.11 GPa, respectively, which closely correlated with the crystalline-to-amorphous transformation. The detailed conduction mechanism and the defect reaction process at high pressure indicate that the application of pressure could efficiently manipulate the microstructure and electrical performance of rare-earth doped polycrystalline materials, and therefore holds great promise for numerous applications in the future.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2013
·Vol. 25
·期 40
·5750-5755
·
IF 14.829
Jizhong Song,Sergei A. Kulinich,Jian Yan,Zhigang Li,Jianping He,Caixia Kan,Haibo Zeng
Graphical Highly epitaxial ZnO nanowire-on-nanoplate structures as efficient and transferable electron field emitters are reported here. Well-faceted ZnO nanoplates can be used as efficient substrates for the epitaxial growth of nanowires with a sharp and high-quality interface, which significantly improves its field emitter performance. Because of its scalable preparation, high performance and facile transfer, the novel material is of high potential for applications in various optoelectronic devices.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Biobased Materials and Bioenergy
·
2017
·Vol. 11
·期 5
·505-509
·
IF 0.975
Pan Shaobing,Qiu Fengxian,Ping Zhang,Geng Rong,Xu Xueqin,Huang Tongxing,Ma Yichen,Yang Jiahui,Li Houzhi
Objectives: This paper focuses on comparing the micronucleus effect and evaluating genotoxicity of nano-zinc oxide and bulk-zinc oxide based on V. faba. root tip cells. Methods: The different concentration of nano-ZnO and bulk-ZnO suspensions are used as mutagens,
meanwhile, the paper calculates the micronucleus permillage of V. faba. root tip cells exposed by different treatment liquid. Results: 1. Both nano-ZnO and bulk-ZnO suspensions can induce higher micronucleus permillage. The micronucleus permillage induced by different concentration
of nano-ZnO and bulk-ZnO are all higher than the negative control group. The significance comparison of micronucleus permillage between bulk-ZnO and negative control group is significant (p < 0.05) and the significance comparison between nano-ZnO and negative control group is extremely
significant (p < 0.01), both of difference comparison have statistical significance. 2. The micronucleus permillage which is induced by nano-ZnO is higher than bulk-ZnO on the equal concentration. The significance comparison of them is extremely significant (p < 0.01),
the comparison has statistical significance. The genotoxicity to V. faba. root tip cells of nano-ZnO is higher than bulk-ZnO. 3. It has stronger operability and scientificalness that we use the optimized micronucleus test technique of V. faba. root tip cells to evaluate genotoxicity
of manufactured nanomaterials.
研究领域:
遗传学
·
毒理学
·
环境科学
✓ 已验证
DOI
高影响因子
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.
研究领域:
材料科学
·
生物医学工程
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 12
·6724
·
IF 6.208
Xingyao Pei,Haiyang Jiang,Gang Xu,Cun Li,Daowen Li,Shusheng Tang
Zinc oxide nanoparticles (ZnO NPs) with high bioavailability and excellent physicochemical properties are gradually becoming commonplace as a substitute for conventional ZnO materials. The present study aimed to investigate the hepatotoxicity mechanism of ZnO NPs and traditional non-nano ZnO particles, both in vivo and in vitro, and identify the differences in their toxic effects. The results showed that the extent and conditions of zinc ion release from ZnO NPs were inconsistent with those of ZnO. The RNA-seq results revealed that the expression quantity of differentially expressed genes (DEGs) and differentially expressed transcripts (DETs) affected by ZnO NPs was more than in ZnO, and the overall differences in genes or transcripts in the ZnO NPs group were more pronounced than in the ZnO group. Furthermore, the cell inactivation, oxidative stress, mitochondrial damage, and intracellular calcium overload induced by ZnO NPs were more serious than ZnO in HepG2 cells. Moreover, compared with traditional ZnO, the rat liver damage induced by ZnO NPs was more significant, with evidence of higher AST and ALT levels, weaker antioxidant capacity, and more serious histopathological damage (p< 0.05). In summary, the hepatotoxicity of ZnO NPs was more serious than that of conventional ZnO, which is helpful to understand the hepatotoxicity mechanism of Zn compounds in different states and improve the risk assessment of novel nano ZnO products in a variety of applications.Keywords:zinc oxide nanoparticles;ZnO;hepatotoxicity;RNA-seq;oxidative stress
研究领域:
毒理学
·
纳米技术
·
分子生物学
·
药理学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Innocent O. Arukalam,Emeka E. Oguzie,Ying Li
Perfluorodecyltrichlorosilane-based poly(dimethylsiloxane)-ZnO (FDTS-based PDMS-ZnO) nanocomposite coating with anti-corrosion and anti-fouling capabilities has been prepared using a one-step fabrication technique. XPS analysis and contact angle measurements showed the fluorine content to increase, while the hydrophobicity of the coatings decreased with addition of FDTS. XRD analysis revealed existence of ZnO nanoparticles of dimensions ranging from 11.45 to 93.01 nm on the surface of coatings, with the mean particle size decreasing with FDTS addition, and was confirmed by SEM and TEM observations. Interestingly, the anti-corrosion performance and mechanical properties of the coatings increased remarkably on addition of FDTS. Indeed, the observed low adhesion strength , surface energies and the outstanding anti-corrosive properties imply that the obtained coating would be useful in anti-fouling applications.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2018
·
IF 3.412
Yuyu Liu,Yang Li,Lingli Deng,Lin Zou,Fengqin Feng,Hui Zhang
The ethylcellulose/gelatin solutions containing various concentrations of zinc oxide (ZnO) nanoparticles were electrospun, and the resultant nanofibers were characterized by scanning electron microscopy, energy dispersive X-ray, X-ray photoelectron spectrometer, X-ray diffraction, Fourier transform infrared spectroscopy, mechanical testing, water contact angle, and water stability. Results indicated that ZnO nanoparticles acting as fillers interacted with polymers, resulting in the enhanced surface hydrophobicity and water stability of nanofibers. The antibacterial assay showed a concentration-dependent effect of ZnO on the viabilities of Escherichia coli and Staphylococcus aureus. Notably, the antimicrobial efficiency of the 1.5 wt % ZnO-containing fibers against Staphylococcus aureus was 43.7% but increased to 62.5% after UV irradiation at 364 nm, possibly due to the significantly increased amounts of intracellular reactive oxygen species. These results suggested that the ZnO-containing nanofibers with excellent surface hydrophobicity, water stability, and antimicrobial activity exhibited potential uses in food packaging.
研究领域:
材料科学
·
微生物学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 16
·期 1
·116
·
IF 5
Muhammad Waseem,Yuxiang Xie,Kesong Yu,Xiling Zhou,Yingchun Cai,Xiaoli Zhang,Baochen Liu,Jingbo Chen
Electromagnetic wave pollution has become a significant harm posed to human health and precision instruments. To shelter such instruments from electromagnetic radiation, high-frequency electromagnetic interference (EMI) shielding materials are extremely desirable. The focus of this research is lightweight, high-absorption EMI shielding composites. Simple aqueous dispersion and drying procedures were used to prepare cotton fiber (CF)-based sheets combined with various zinc oxide (ZnO) contents. These composites were carbonated in a high-temperature furnace at 800 °C for two hours. The obtained CF/ZnO samples have densities of 1.02–1.08 g/cm3. The EMI shielding effectiveness of CF-30% ZnO, CF-50% ZnO, and CF-70% ZnO reached 32.06, 38.08, and 34.69 dB, respectively, to which more than 80% of absorption is attributed. The synergetic effects of carbon networks and surface structures are responsible for the high EMI shielding performance; various reflections inside the interconnected networks may also help in improving their EMI shielding performance.Keywords:cotton fiber;zinc oxide;carbonation;electromagnetic interference shielding;composites
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL ENGINEERING SCIENCE
·
2018
·Vol. 35
·期 8
·785-790
·
IF 1.547
Cai Zhang,Xiaohua Chen,Jiangtao Wang,Liju Tan
To investigate the toxicity of ZnO nanoparticles (NPs) on microalgae, Bacillariophyta (Skeletonema costatum and Phaeodactylum tricomutum) and Chlorophyta (Dunaliella salina and Platymonas subcordiforus) were cultivated in f/2 medium under uniform culture conditions with different concentrations of ZnO NPs. Growth inhibition ratio and the 50% effective concentration were used as two toxicity parameters for comparing toxicities on different microalgae. Dose–response curves were built to show different trends in toxicities of ZnO NPs on the four microalgae. The sensitivity rank of the algae to toxicity of ZnO NPs was S. costatum>D. salina>P. tricomutum>P. subcordiforus. Adsorption of ZnO NPs on S. costatum and D. salina was clearly observed in scanning electron microscope images. In contrast, no adsorption of ZnO NPs was found on surfaces of P. tricomutum and P. subcordiforus. Shapes and surface structures of the microalgae resulted in different adsorption phenomena, which had an influence on interactions between NPs and microalgae. This study helps to explain the different toxicities of ZnO NPs on the four microalgae, which could contribute to further explore toxic mechanisms of NPs.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Guangli Chen,Yuxuan Zhang,Kangwei Zhang,Wenjun Lv,Zaosheng Lv,Xiaofang Gao,Yanfen Huang
Superhydrophobic materials have applications such as oil–water separation, antifouling, and antibacterial properties. At present, most of the manufacturing process of superhydrophobic coatings not only is costly but also causes pollution to the environment, which is not in line with the concept of green and sustainable development. In this work, we have prepared a superhydrophobic coating using green and environmentally friendly chitosan, nanozinc oxide, γ-aminopropyl triethoxysilane (KH550), and stearic acid. The prepared cotton fabric showed remarkable superhydrophobic properties. Under simulated sunlight, the surface temperature of the superhydrophobic cotton fabric can increase to 50 °C. The superhydrophobic surface sustained its superhydrophobic property after at least 80 tape peeling tests, 50 occurrences of sandpaper friction, 3.5 h of washing, and 24 h of high-temperature heat treatment. Besides, the coating can be utilized for oil–water separation and is reusable. The oil–water separation effectiveness of the coating reaches more than 95%. Therefore, this inexpensive and ecofriendly nanozinc oxide/chitosan-based superhydrophobic coating has remarkable application potential.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Sciences
·
2024
·
IF 5.9
Yuanzhang Hou,Yange Wang,Yidi Zhang,Zhibo Lu,Zhenbo Zhang,Zhiqiang Dong,Yuping Qiu
The ocean serves as a repository for various types of artificial nanoparticles. Nanoplastics (NPs) and nano zinc oxide (nZnO), which are frequently employed in personal care products and food packaging materials, are likely simultaneously released and eventually into the ocean with surface runoff. Therefore, their mutual influence and shared destiny in marine environment cannot be ignored. This study examined how nanomaterials interacted and transported through sea sand in various salinity conditions. Results showed that NPs remained dispersed in brine, while nZnO formed homoaggregates. In seawater of 35 practical salinity units (PSU), nZnO formed heteroaggregates with NPs, inhibiting NPs mobility and decreasing the recovered mass percentage (M eff ) from 24.52% to 12.65%. In 3.5 PSU brackish water, nZnO did not significantly aggregate with NPs, and thus barely affected their mobility. However, NPs greatly enhanced nZnO transport with M eff increasing from 14.20% to 25.08%, attributed to the carrier effect of higher mobility NPs. Cotransport from brackish water to seawater was simulated in salinity change experiments and revealed a critical salinity threshold of 10.4 PSU, below which the mobility of NPs was not affected by coexisting nZnO and above which nZnO strongly inhibited NP transport. This study highlights the importance of considering the mutual influence and shared destiny of artificial nanoparticles in the marine environment and how their interaction and cotransport are dependent on changes in seawater salinity.
研究领域:
环境科学
·
海洋学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）