Xueliang Qiao

Huazhong University of Science and Technology, Wu-han-shih, Hubei, China

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Publications (67)137.75 Total impact

  • Fazhe Sun · Zengdian Zhao · Xueliang Qiao · Fatang Tan · Wei Wang ·

    Materials Research Bulletin 11/2015; DOI:10.1016/j.materresbull.2015.10.054 · 2.29 Impact Factor
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    ABSTRACT: By releasing Ag+ ions and generating reactive oxygen species (ROS), silver nanoparticles (Ag NPs) not only have good anti-tumor activity but also display cytotoxicity towards normal cells which limits their further application in the medical field. Up to now, there was still no appropriate method to reduce the cytotoxicity while improving the anti-cancer activity of Ag NPs. This paper focuses on counteracting the toxic side effect of the ROS from Ag NPs while simultaneously improving their anti-cancer effect. We used α-TOS to modify Ag NPs and investigated their bioactivity in vitro for the first time. The modified Ag NPs with a high α-TOS concentration not only show much higher anti-tumor activity than Ag NPs alone but also promote the survival of normal cell lines slightly, while the modified Ag NPs with a low α-TOS concentration display a lower cytotoxicity against normal cell lines without affecting their anti-cancer activity when compared to Ag NPs alone. Therefore, this work presents a higher potential for cancer treatment than using Ag NPs alone. This journal is
    RSC Advances 09/2015; 5(100):82050-82055. DOI:10.1039/c5ra12911g · 3.84 Impact Factor
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    ABSTRACT: In this paper, the mesoporous silica MCM-41 supporting nano zero valent iron (MSNZVI) composite was synthesized in a facile way and characterized by XRD, FT-IR, TEM and N2 adsorption–desorption. The catalytic activity of the as-prepared MSNZVI composite as a catalyst was evaluated on the p-nitrophenol reduction in the presence of excess NaBH4. And the rate constant is 4.89 × 10−3 s−1 when the mole ratio of NaBH4 to p-nitrophenol is 500. MSNZVI composite can be reused for at least five cycles with stable catalytic activity. Moreover, a possible catalytic mechanism of MSNZVI was proposed to explain the reduction of p-nitrophenol by NaBH4.
    Journal of Porous Materials 07/2015; 22(6). DOI:10.1007/s10934-015-0038-2 · 1.11 Impact Factor
  • Hongfei Lu · Xueliang Qiao · Wei Wang · Fatang Tan · Zunqi Xiao · Jianguo Chen ·
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    ABSTRACT: Nano zero-valent iron (NZVI) particles were prone to forming aggregates owing to their intrinsic magnetism and van der Waals force. In this work, a composite material containing mesoporous silica MCM-41 and NZVI was prepared to avoid the problem of NZVI aggregation. The structures and morphologies of the as-prepared composite were confirmed using X-ray diffraction, Fourier transform infrared spectrometry, transmission electron microscopy, N2 adsorption-desorption, and X-ray photoelectron spectroscopy techniques. It was found that NZVI particles were well dispersed in the composite, although the size of NZVI particle was larger than that of bare NZVI. Moreover, the composite was used as adsorbent for removing Pb(II) from aqueous solution at room temperature. The effects of contact time, initial solution pH, and adsorbent dosage on the removal efficiency of Pb(II) were studied using batch adsorption experiments. The results indicated the composite exhibited enhanced adsorption properties, with the maximum adsorption capacity of 416.17 mg/g for Pb(II) removal from aqueous solution. In addition, the adsorption isotherms and adsorption kinetics were also investigated systematically, it was found that the isothermal data were well fitted to Langmuir model, and the kinetic data were well suitable to pseudo-second-order kinetics model.
    Desalination and water treatment 05/2015; DOI:10.1080/19443994.2015.1040851 · 1.17 Impact Factor
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    ABSTRACT: Ag/ZnO/graphene (Ag/ZnO/G) nanocomposites were successfully synthesized by a facile low-temperature microwave-assisted solution method. The morphology and phase structure of the prepared samples were characterized by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The photocatalytic performance of the obtained products were evaluated by analyzing the degradation of methyl orange (MO) solution under UV irradiation. The Ag/ZnO/graphene nanocomposites showed higher photocatalytic efficiency than ZnO or Ag/ZnO. Photocatalytic activity of Ag/ZnO/graphene nanocomposites with different graphene content was studied. Firstly the photocatalytic efficiency of the Ag/ZnO/graphene nanocomposites increased with the increase of graphene oxide (GO) content from 0 to 1%, then the photocatalytic efficiency decreased while the percent of GO addition reached 2%. The photostability testing of the Ag/ZnO/graphene nanocomposites with 1% GO content showed that the catalyst has excellent photocatalytic activity and photostability for the degradation of MO. It is believed that this facile, rapid microwave-assisted strategy is scalable and can be applied to synthesize other metal/semiconductor oxide/graphene nanocomposites for different applications in different fields.
    Journal of Photochemistry and Photobiology A Chemistry 04/2015; 302. DOI:10.1016/j.jphotochem.2014.12.012 · 2.50 Impact Factor
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    ABSTRACT: Na2O–CaO–SiO2 and Na2O–CaO–Al2O3–SiO2 glass–ceramic coatings were first prepared on commercial-purity titanium TA1 to improve its high temperature oxidation resistance. The Na2O–CaO–Al2O3–SiO2 glass–ceramic coating showed better sintering behavior than the Na2O–CaO–SiO2 glass–ceramic coating. Both glass–ceramic coatings clearly decreased the oxidation rate of TA1 at 800 °C. After high temperature oxidation, both glass–ceramic coatings showed a good adhesion to the TA1 substrate. Between the Na2O–CaO–SiO2 glass–ceramic coating and the TA1 substrate, a Ti5Si3 interface layer was observed as a result of the reaction between SiO2 in the glass and Ti. While for the Na2O–CaO–Al2O3–SiO2 glass–ceramic coating, diffusion of Al to the TA1 could also be seen under the Ti5Si3 interface layer. Cross-sectional EDS line scanning images of the glass–ceramic coatings showed that diffusion of the elements such as O, Ca and Na into TA1 was negligible, suggesting that both glass–ceramic coatings were suitable for protection of TA1 against high temperature oxidation.
  • Taoqi Zhang · Xueliang Qiao · Fatang Tan · Wei Wang · Hongfei Lu · Zunqi Xiao · Jianguo Chen ·
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    ABSTRACT: In this paper, polyimide-graphite (PG) composite was prepared and used as a solid lubricant at elevated temperatures. PG composite was characterized by X-ray diffraction, and its thermal stability was evaluated based on thermogravimetric/differential thermal analysis and Fourier transform infrared spectrometry analysis. The results show that in PG composite, there was some interaction between the graphite (GR) and the polyimide (PI) matrix. Consequently, the PG composite exhibited better thermal stability than PI. The friction behavior of the PG composite sliding against steel at elevated temperatures (300–600°C at an interval of 100°C) was evaluated with a ring-on-ring tribometer. It was found that the PG composite exhibited excellent friction-reducing ability and good load-carrying capacity in the temperature range of 300–600°C and applied loads of 300–700 N. Moreover, this excellent lubricating performance of the PG composite might be attributed to its good thermal stability as a result of the interaction between the GR and the PI matrix. Therefore, PG composite could be used as an excellent solid lubricant under the high-temperature conditions.
    Science and Engineering of Composite Materials 01/2015; DOI:10.1515/secm-2014-0322 · 0.52 Impact Factor
  • Wen Zhang · Guansong Hu · Wanzhong Zhang · Xueliang Qiao · Kai Wu · Qingyuan Chen · Yuchun Cai ·
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    ABSTRACT: Silver nanorods with different polydispersity were synthesized in the cetyltrimethylammonium bromide (CTAB) rod-shaped micelles by inducing the orientation growth of silver seeds and adjusting the volumes of CTAB. The reaction for the formation of silver nanorods had basically finished in 10 min. A suitable volume of CTAB (i.e., 15.0 mL of 0.1 M CTAB) is beneficial to obtain high-quality silver nanorods in the given reaction system. That is, the volume of added CTAB is a key factor to determine the polydispersity of the formed nanorods. The aging time plays a critical role in the morphology evolution of silver nanorods due to the oxidation of silver nanorods with Br-, O-2 and the Ostwald ripening of the nanoparticles. As a result, the characteristic spectral changes occurred due to the morphology evolution of silver nanorods. The ablation in the top ends of the longer nanorods is often accompanied by the growth of some shorter nanorods and nanospheres. The size distribution of silver nanorods might be more uniform in the early aging stage. All the nanorods in the colloidal solution should turn into the near-spherical nanoparticles with larger sizes and thus the characteristic absorption should change to single peak centered at about 400 nm. Based on the research results, mathematical models are proposed for explaining the formation and morphology changes of silver nanorods. The morphology evolution of silver nanorods may be important and can be used as a reference for preparing silver nanorods, nanowires and other anisotropic nanomaterials.
    Physica E Low-dimensional Systems and Nanostructures 11/2014; 64:211–217. DOI:10.1016/j.physe.2014.07.029 · 2.00 Impact Factor
  • Yuanyuan Rao · Wei Wang · Fatang Tan · Yuncheng Cai · Junwen Lu · Xueliang Qiao ·
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    ABSTRACT: Li-doped MgO nanoplates were prepared by a sol-gel technique using magnesium nitrate hexahydrate and lithium nitrate as starting materials. The structures and morphologies of the as-obtained products were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The influence of lithium doping on the antibacterial properties of nano-MgO was also investigated by the minimum inhibitory concentration (MIC) test and bactericidal efficacy against Escherichia coli (E. coli, ATCC 25922). It can be concluded that an appropriate amount of lithium doping can significantly enhance the antibacterial activity of nano-MgO, which can be attributed to an increase of defect concentration (oxygen vacancy) and basicity of nano-MgO, in favor of the generation and stabilization of active oxygen in MgO solution.
    Ceramics International 11/2014; 40(9):14397-14403. DOI:10.1016/j.ceramint.2014.06.035 · 2.61 Impact Factor
  • Hongfei Lu · Xueliang Qiao · Wei Wang · Fatang Tan · Fazhe Sun · Zunqi Xiao · Jianguo Chen ·
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    ABSTRACT: In this study, a series of chitosan-stabilized nano zero-valent iron (CNZVI) composites with different amounts of chitosan were prepared and characterized by Fourier transform infrared spectra, X-ray diffraction, and transmission electron microscopy. The adsorption capacity of these composites was evaluated by the removal experiment of cadmium ion (Cd2+) from aqueous solution. These results showed that the as-prepared CNZVI8 composite with loose aggregate structure has the maximum adsorption capacity for Cd2+. Furthermore, batch adsorption experiments of Cd2+ on CNZVI8 composite were performed under various conditions, such as contact time, adsorbent dosage, initial Cd2+ concentration, and the initial pH of solution. The data revealed that the maximum adsorption capacity of CNZVI8 is 124.74 mg/g. The removal efficiency of Cd2+ increased with the increase in solution pH value, and reaches 99.9% at pH 6. In addition, the adsorption isotherm and the adsorption kinetics of Cd2+ on CNZVI8 were also investigated, suggesting that the isothermal data were well fitted to the Langmuir model and the kinetic data were well suitable to the pseudo-second-order kinetic model.
    Desalination and water treatment 07/2014; 56(1):1-10. DOI:10.1080/19443994.2014.934727 · 1.17 Impact Factor
  • Jianguo Chen · Zunqi Xiao · Xueliang Qiao · Fatang Tan · Hongfei Lu · Wei Wang ·
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    ABSTRACT: Chitosan stabilised nanozero-valent iron (CNZVI) is proposed as a catalyst because of its simple preparation and high activity. The catalytic activity of CNZVI was investigated using the reduction reaction of p-nitrophenol (p-NP) by NaBH4. The result indicated that CNZVI possessed good catalytic activity, and the rate constant (k) was 2.45 × 10-3 s -1. In addition, CNZVI can be easily separated by an external magnetic field from aqueous solution, and it could also be repeatedly applied for the reduction of p-NP for at least five successive cycles with stable catalytic activity. All of these results suggest that CNZVI could be used as an excellent catalyst for the catalytic reduction of p-NP by NaBH4.
    Micro & Nano Letters 07/2014; 9(7):446-450. DOI:10.1049/mnl.2014.0117 · 0.85 Impact Factor
  • Xiao Peng · Fatang Tan · Wei Wang · Xiaolin Qiu · Fazhe Sun · Xueliang Qiao · Jianguo Chen ·
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    ABSTRACT: In this study, silver–graphene nanocomposites (SGNs) were successfully prepared by spontaneous reduction of silver ions and graphene oxide. Silver nanoparticles (about 30 nm) with narrow size distribution were distributed randomly on the surface of graphene. Different amounts of SGNs were introduced into silver flakes filled electrical conductive adhesives (ECAs) to study the effect of SGNs on the properties of the ECAs. The results showed that the volume resistivity of the ECAs decreased first and then increased with the increase of weight ratios of SGNs to silver flakes. While the weight ratio of SGNs to silver flakes was 20:80 (%), the resistivity reached the lowest value of 2.37 × 10−4 Ω cm. The lap shear strength decreased with the increase of the content ration of SGNs. And when the weight ratio of SGNs to silver flakes was 20:80 (%), the lap shear strength of ECA was about 10 MPa. According to the thermogravimetric analysis, the addition of SGNs can cause a slight decrease in the thermal stability of the ECA. In summary, SGNs are the promising candidates for the conductivity improvement of silver flakes filled electrical conductive adhesives.
    Journal of Materials Science Materials in Electronics 03/2014; 25(3). DOI:10.1007/s10854-013-1671-7 · 1.57 Impact Factor
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    ABSTRACT: A novel glass amorphous silica composite coating was prepared by the slurry method in order to improve the oxidation resistance of Ti-6Al-4V alloy at high temperatures. The microstructure of the as-prepared composite coating was analyzed by SEM, XRD and EDS techniques. The oxidation resistance and the microstructure evolution of the composite coating at 800 degrees C for 50 h were also studied. The results show that mass gains of the specimens coated with the composite coating were far less than that of the uncoated ones after oxidation of 50 h. Thick oxide scales composed of plate-like rutile TiO2 and some granular alpha-Al2O3 formed on bare Ti-6Al-4V alloy, while quartz, cristobalite and diopside were observed in the composite coating, which are useful crystals for slowing the inward diffusion of oxygen to the substrate. The cross-sectional EDS line scanning images show that inward diffusion of oxygen and outward diffusion of Ti through the composite coating were insignificant. The microhardness profile reveals that the solid solution oxygen in Ti-6Al-4V alloy with composite coating was limited.
    Ceramics International 03/2014; 40(2):3503-3509. DOI:10.1016/j.ceramint.2013.09.079 · 2.61 Impact Factor
  • Wanzhong Zhang · Wen Zhang · Xueliang Qiao · Xiaolin Qiu · Qingyuan Chen · Yuchun Cai ·
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    ABSTRACT: Cetyltrimethylammonium bromide rod-like micelles were employed as soft template to prepare one-dimensional and two-dimensional silver nanostructures by a seed-mediated growth method. The results indicate that the acidity-basicity of the solution plays an important role in the formation of silver nanorods and net-like nanostructures. Silver ions are not reduced at the pH lower than the pKa 1 4.1 of ascorbic acid. The lower NaOH concentration (e.g., 4.5 mM) is favorable to the growth of the seed crystals and the self-assembly of silver nanoparticles to form silver net-like nanostructures. The optimal pH for the formation of silver net-like nanostructures is about 6.0. The time-resolved UV-Vis spectra show that the seed crystals grow gradually with time from small nanocrystals to big nanoparticles, short nanorods and net-like nanostructures under the template effect of CTAB micelles. The higher NaOH concentration gives a higher reduction rate of silver ions to facilitate the formation of silver nanorods. The aspect ratio of silver nanorods increases with NaOH concentration from 6.75 mM to 11.25 mM and decreases with NaOH concentration from 11.25 mM to 18.00 mM. However, only silver nanospheres are formed at the pH near to and more than the pKa 2 11.8 of ascorbic acid. The optimal pH range of the solution for the formation of silver nanorods is from 9.56 to 10.80. Furthermore, the lower concentration of crystal seeds also facilitates the formation of silver nanostructures. These results will help in studying the synthesis of anisotropic metal nanomaterials by a seed-mediated growth method.
    Science of Advanced Materials 02/2014; 6(2):304-311. DOI:10.1166/sam.2014.1716 · 2.60 Impact Factor
  • Sasa Gu · Wei Wang · Fatang Tan · Jian Gu · Xueliang Qiao · Jianguo Chen ·
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    ABSTRACT: A facile, cost-effective and environmentally friendly route was developed to synthesize hierarchical silver microstructures consisting of different shaped secondary units through reducing concentrated silver nitrate with ascorbic acid in the absence of any surfactant. The as-obtained samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The investigation on the morphology evolution revealed that the molar ratio of ascorbic acid to silver nitrate was critical to control the shape of secondary structures. The length of plate-like secondary structures which composed hierarchical silver particles could be controlled by changing the reactant concentrations, and it had a key relationship with the catalytic activity for the reduction of p-nitrophenol by NaBH4. The catalytic activity of these surfactant-free silver microstructures was about ten times higher than that of silver nanoparticles, and even comparable to that of gold nanoplates, which indicates that the as-obtained silver microstructures are very promising candidates for the catalytic reduction of p-nitrophenol due to the simple synthesis route and high catalytic activity.
    Materials Research Bulletin 01/2014; 49(1):138-143. DOI:10.1016/j.materresbull.2013.08.059 · 2.29 Impact Factor
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    Dan Wu · Wei Wang · Fatang Tan · Fazhe Sun · Hongfei Lu · Xueliang Qiao ·
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    ABSTRACT: ZnO nanorods have been successfully prepared at low temperature (60 °C) in the presence of ammonia via a simple aqueous solution-based chemical approach. After calcination at 300 °C, many unique pitted structures are found on the surface of ZnO nanorods, although the shape and size of ZnO nanorods have almost no changes. Furthermore, the pit-structured ZnO nanorods exhibit higher photocatalytic activity for methylene blue photodegradation with a rate constant (k) of 0.01402 min−1, which is about 3 times more than that of uncalcined sample. The formation of the pitted structures is presumably attributed to the decomposition of a trace amount of ZnO(NH3)n complex implanted into ZnO crystals. In addition, a photocatalytic mechanism is proposed to explain the enhanced photocatalytic activity of the pit-structured ZnO nanorods.
    RSC Advances 11/2013; 3(43):20054. DOI:10.1039/c3ra42874e · 3.84 Impact Factor
  • Yuanyuan Rao · Wei Wang · Fatang Tan · Yuncheng Cai · Junwen Lu · Xueliang Qiao ·
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    ABSTRACT: Compared with other inorganic antibacterial agents, magnesium oxide (MgO) nanopowders exhibit a unique antibacterial mechanism and various advantages in applications, having attracted extensive attention. In this study, MgO nanopowders doped with different ions (Li+, Zn2+ and Ti4+) were synthesized by a sol-gel method, respectively. The structures and morphologies of the as-obtained precursors and nanopowders were characterized and confirmed by X-ray diffraction (XRD), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS) analysis. The influence of three metal ions doping on the antibacterial properties of MgO nanopowders was also investigated by their bactericidal activity against Escherichia coli (E. coli, ATCC 25922) using the broth microdilution method and the agar method. The results show that Li-doped MgO exhibits better antibacterial activity, Zn-doped and Ti-doped MgO display poorer antibacterial activity than pure MgO. It can be concluded that the influence of different ions doping on the antibacterial properties of MgO mainly lies on oxygen vacancies and basicity of nanopowders.
    Applied Surface Science 11/2013; 284:726-731. DOI:10.1016/j.apsusc.2013.08.001 · 2.71 Impact Factor
  • Fan Luo · Junwen Lu · Wei Wang · Fantang Tan · Xueliang Qiao ·
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    ABSTRACT: Magnesium oxide (MgO) nanopowders were synthesised by a sol-gel method with different amounts of ammonium hydroxide (NH3·H2O) and characterised by a combination of thermo gravimetric analysis, X-ray diffraction and transmission electron microscopy. It was found that the structure and morphology of MgO nanopowders can be regulated by the addition of NH3·H2O. When an appropriate amount of NH3·H2O was added into the reaction system, plate-like nanoMgO was obtained. The antibacterial activity of MgO nanoplates was also investigated by the minimum inhibition concentration (MIC) test and bactericidal efficacy against Escherichia coli (E. coli, ATCC 25922). The tested results revealed that the MgO nanoplates have great antibacterial effect with an MIC value of 600 mg/l and the bactericidal rate was about 99.8% at a concentration of 500 mg/l. Furthermore, the effect of NH3·H2O on the structure and morphology of MgO nanopowders and on the growth mechanism are briefly discussed. The hydroxide ion of NH3·H2O, in favour of Mg(OH)2 generation in the precursors, is essential for the formation of MgO nanoplates.
    Micro & Nano Letters 09/2013; 8(9):479-482. DOI:10.1049/mnl.2013.0348 · 0.85 Impact Factor
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    Dan Wu · Wei Wang · Fatang Tan · Huixin Zhang · Xiaolin Qiu · Xueliang Qiao ·
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    ABSTRACT: Silver nanoparticles (Ag NPs) were prepared via a wet-chemical method in the presence of poly(vinyl pyrrolidone) (PVP) without other reducing agents at room temperature. The influence of the addition of water on the preparation of Ag NPs was investigated. It was found that water addition has a significant influence on the reduction reaction, resulting in changes of shape, size and optical properties of the particles. When large amounts of water were added, the reduction rate was very slow. However, when small amounts of water were used, the opposite effects on the reaction process were observed, initial inhibition effect and final promotion effect. Two main possible mechanisms were proposed to explain the opposite effects of two reaction stages with small amounts of water addition: (1) the initial inhibition effect was induced by free oxygen in water, which would react preferentially with the reducing species in the system; (2) the promotion effect thereafter may be due to the differences of chain extension of PVP molecules and electron transfer rate in ethanol and water.
    Journal of Nanoscience and Nanotechnology 06/2013; 13(6):4084-9. DOI:10.1166/jnn.2013.7142 · 1.56 Impact Factor
  • Fazhe Sun · Fatang Tan · Wei Wang · Xueliang Qiao ·
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    ABSTRACT: The unique bouquet-like ZnO arrays were successfully synthesized via a two-step route. First, flower-like ZnO arrays were prepared by a hydrothermal reaction. Then the bouquet-like structure was obtained by the selective etching of the ZnO nano-flowers in NaCl aqueous solution. Each ZnO bouquet was composed of many tube-like petals radiating from the center outwards. Based on the experimental evidences, a possible mechanism involving face-selective etching and defect-selective etching was proposed for the formation of bouquet-like ZnO arrays. It was found that the distribution of defects played a critical role in the structure of petals of ZnO bouquets. Photoluminescence (PL) spectrum of the bouquet-like ZnO arrays exhibited two emission bands, including a strong ultraviolet (UV) emission at 382 nm and a weak visible emission band centered at 532 nm.
    Materials Letters 05/2013; 99:176–179. DOI:10.1016/j.matlet.2013.03.042 · 2.49 Impact Factor

Publication Stats

1k Citations
137.75 Total Impact Points


  • 1999-2015
    • Huazhong University of Science and Technology
      • • State Key Laboratory of Material Processing and Die & Mould Technology
      • • Institute of Polymer Science and Engineering
      Wu-han-shih, Hubei, China