The Experts below are selected from a list of 7989 Experts worldwide ranked by ideXlab platform
Fenglin Huang - One of the best experts on this subject based on the ideXlab platform.
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a room temperature ammonia gas sensor based on cellulose tio2 pani Composite Nanofibers
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016Co-Authors: Zengyuan Pang, Qingqing Wang, Zhanping Yang, Yun Chen, Jinning Zhang, Fenglin HuangAbstract:Abstract We report a facile approach to prepare cellulose/titanium dioxide/polyaniline (cellulose/TiO2/PANI) Composite Nanofibers that involves P–N heterojunctions at the interface of p-type PANI and n-type TiO2. This work found that the P–N heterojunctions could improve ammonia sensing properties of the prepared Nanofibers. Electrospun cellulose acetate Nanofibers were deacetylated to prepare regenerated cellulose Nanofibers, and then the obtained cellulose Nanofibers were immersed into TiO2 sol to adsorb TiO2 nanoparticles onto the surface of them to fabricate cellulose/TiO2 Composite Nanofibers. In-situ polymerization of aniline was utilized to deposit PANI on the surface of cellulose/TiO2 Composite Nanofibers. The gas sensing properties of the prepared Nanofibers were evaluated by a home-made test system. The cellulose/TiO2/PANI and cellulose/PANI Composite Nanofibers were exposed to 10, 30, 50, 100, 150, 200 and 250 ppm ammonia vapor at room temperature, respectively. It was found that the response values and sensitivity of cellulose/TiO2/PANI were much higher than those of cellulose/PANI Composite Nanofibers. Enhanced sensing was obtained by cellulose/TiO2/PANI due to the P–N heterojunctions whose depletion layer would be widened when the Composite Nanofibers were exposed to ammonia, resulting in their resistance increased dramatically.
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A room temperature ammonia gas sensor based on cellulose/TiO2/PANI Composite Nanofibers
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016Co-Authors: Zengyuan Pang, Qingqing Wang, Fenglin Huang, Zhanping Yang, Jinning Zhang, Chen Yun, Qufu WeiAbstract:Abstract We report a facile approach to prepare cellulose/titanium dioxide/polyaniline (cellulose/TiO2/PANI) Composite Nanofibers that involves P–N heterojunctions at the interface of p-type PANI and n-type TiO2. This work found that the P–N heterojunctions could improve ammonia sensing properties of the prepared Nanofibers. Electrospun cellulose acetate Nanofibers were deacetylated to prepare regenerated cellulose Nanofibers, and then the obtained cellulose Nanofibers were immersed into TiO2 sol to adsorb TiO2 nanoparticles onto the surface of them to fabricate cellulose/TiO2 Composite Nanofibers. In-situ polymerization of aniline was utilized to deposit PANI on the surface of cellulose/TiO2 Composite Nanofibers. The gas sensing properties of the prepared Nanofibers were evaluated by a home-made test system. The cellulose/TiO2/PANI and cellulose/PANI Composite Nanofibers were exposed to 10, 30, 50, 100, 150, 200 and 250 ppm ammonia vapor at room temperature, respectively. It was found that the response values and sensitivity of cellulose/TiO2/PANI were much higher than those of cellulose/PANI Composite Nanofibers. Enhanced sensing was obtained by cellulose/TiO2/PANI due to the P–N heterojunctions whose depletion layer would be widened when the Composite Nanofibers were exposed to ammonia, resulting in their resistance increased dramatically.
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fabrication of pa6 tio2 pani Composite Nanofibers by electrospinning electrospraying for ammonia sensor
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014Co-Authors: Zengyuan Pang, Jiapeng Fu, Fenglin HuangAbstract:Abstract Polyamide 6/titanium dioxide (PA6/TiO 2 ) Composite Nanofibers were prepared as templates via electrospinning–electrospraying process, in which TiO 2 nanoparticles were inserted into PA6 Nanofibers mat, and then PA6/TiO 2 /polyaniline (PANI) Composite Nanofibers were fabricated by in-situ polymerization of aniline. Structural and morphological of the prepared Composite Nanofibers were carried out through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Their abilities to detect ammonia were evaluated by a home-made test system. It was found that p–n junction was formed at the interface between PANI and TiO 2 . And due to the p–n junction, the PA6/TiO 2 /PANI Composite Nanofibers exhibited good reproducibility, selectivity and apparent improvement in response than that of PA6/PANI Composite Nanofibers.
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Fabrication of PA6/TiO2/PANI Composite Nanofibers by electrospinning–electrospraying for ammonia sensor
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014Co-Authors: Zengyuan Pang, Fenglin Huang, Lei Luo, Qufu WeiAbstract:Abstract Polyamide 6/titanium dioxide (PA6/TiO 2 ) Composite Nanofibers were prepared as templates via electrospinning–electrospraying process, in which TiO 2 nanoparticles were inserted into PA6 Nanofibers mat, and then PA6/TiO 2 /polyaniline (PANI) Composite Nanofibers were fabricated by in-situ polymerization of aniline. Structural and morphological of the prepared Composite Nanofibers were carried out through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Their abilities to detect ammonia were evaluated by a home-made test system. It was found that p–n junction was formed at the interface between PANI and TiO 2 . And due to the p–n junction, the PA6/TiO 2 /PANI Composite Nanofibers exhibited good reproducibility, selectivity and apparent improvement in response than that of PA6/PANI Composite Nanofibers.
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Ammonia Sensing Behaviors of TiO2-PANI/PA6 Composite Nanofibers
Sensors, 2012Co-Authors: Qingqing Wang, Xianjun Dong, Zengyuan Pang, Xin Xia, Qufu Wei, Fenglin HuangAbstract:Titanium dioxide-polyaniline/polyamide 6 (TiO2-PANI/PA6) Composite Nanofibers were prepared by in situ polymerization of aniline in the presence of PA6 Nanofibers and a sputtering-deposition process with a high purity titanium sputtering target. TiO2-PANI/PA6 Composite Nanofibers and PANI/PA6 Composite Nanofibers were fabricated for ammonia gas sensing. The ammonia sensing behaviors of the sensors were examined at room temperature. All the results indicated that the ammonia sensing property of TiO2-PANI/PA6 Composite Nanofibers was superior to that of PANI/PA6 Composite Nanofibers. TiO2-PANI/PA6 Composite Nanofibers had good selectivity to ammonia. It was also found that the content of TiO2 had a great influence on both the morphology and the sensing property of TiO2-PANI/PA6 Composite Nanofibers.
Peng Jun Yao - One of the best experts on this subject based on the ideXlab platform.
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hollow hierarchical sno2 zno Composite Nanofibers with heterostructure based on electrospinning method for detecting methanol
Sensors and Actuators B-chemical, 2014Co-Authors: Wei Tang, Jing Wang, Peng Jun YaoAbstract:Abstract SnO2-ZnO Composite Nanofibers were synthesized by an electrospinning method in this study. The structural composition and morphology were characterized by X-ray diffraction, scanning electron microscopy and N2 physical adsorption. The results indicated that hollow hierarchical SnO2-ZnO Composite Nanofibers having mesopore structure formed after sintering at 600 °C for 3 h. The gas sensor prepared by the SnO2-ZnO Composite Nanofibers exhibited good selectivity to methanol in the presence of ethanol, acetone, formaldehyde, ammonia, toluene and benzene at the optimum operating temperature of 350 °C. The response and recovery time to 10 ppm methanol were about 20 s and 40 s, respectively. The growth mechanism of the hollow hierarchical Nanofibers was discussed, as well as the methanol adsorption–desorption mechanism.
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Investigation of Gas Sensing Materials SnO2/In2O3 Composite Nanofibers Treated by Oxygen Plasma
Key Engineering Materials, 2013Co-Authors: Jing Wang, Peng Jun Yao, Lin Zhao, Zhe Nan TangAbstract:SnO2/In2O3 Composite Nanofibers were synthesized by using an electrospinning system with double jets, then, treated by oxygen plasma. The morphology and structure of treated Composite Nanofibers were analyzed by SEM and XRD. The treated Composite Nanofibers showed more irregular and rough. The porosity of the treated Composite Nanofibers was bigger than the one of untreated. The gas sensing properties of the Composite Nanofibers to formaldehyde were measured before and after materials treated by oxygen plasma. The treated Composite Nanofibers exhibit large response values. Cross-responses and humidity effection of the treated Composite Nanofibers sensor were tested. The sensing mechanism of the SnO2/In2O3 Composite Nanofibers gas sensor treated by oxygen plasma was briefly analyzed.
Ce Wang - One of the best experts on this subject based on the ideXlab platform.
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electrospun chitosan sericin Composite Nanofibers with antibacterial property as potential wound dressings
International Journal of Biological Macromolecules, 2014Co-Authors: Rui Zhao, Bolun Sun, Ying Zhang, Dawei Zhang, Zhaohui Tang, Xuesi Chen, Ce WangAbstract:Abstract Chitosan and sericin are natural and low cost biomaterials. Both biomaterials displayed good compatibility to human tissues and antibacterial properties for biomedical application. In this study, we have successfully fabricated chitosan/sericin Composite Nanofibers by electrospinning. The obtained Composite Nanofibers were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) studies. The Composite Nanofibers had good morphology with diameter between 240 nm and 380 nm. In vitro methyl thiazolyl tetrazolium (MTT) assays demonstrated that the chitosan/sericin Composite Nanofibers were biocompatible and could promote the cell proliferation. Furthermore, the Composite Nanofibers showed good bactericidal activity against both of Gram-positive and Gram-negative bacteria. Thus, the chitosan/sericin Composite Nanofibers are promising for wound dressing applications.
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Electrospun chitosan/sericin Composite Nanofibers with antibacterial property as potential wound dressings.
International Journal of Biological Macromolecules, 2014Co-Authors: Rui Zhao, Bolun Sun, Ying Zhang, Dawei Zhang, Zhaohui Tang, Xuesi Chen, Ce WangAbstract:Abstract Chitosan and sericin are natural and low cost biomaterials. Both biomaterials displayed good compatibility to human tissues and antibacterial properties for biomedical application. In this study, we have successfully fabricated chitosan/sericin Composite Nanofibers by electrospinning. The obtained Composite Nanofibers were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) studies. The Composite Nanofibers had good morphology with diameter between 240 nm and 380 nm. In vitro methyl thiazolyl tetrazolium (MTT) assays demonstrated that the chitosan/sericin Composite Nanofibers were biocompatible and could promote the cell proliferation. Furthermore, the Composite Nanofibers showed good bactericidal activity against both of Gram-positive and Gram-negative bacteria. Thus, the chitosan/sericin Composite Nanofibers are promising for wound dressing applications.
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electrochemical determination of dopamine based on electrospun ceo2 au Composite Nanofibers
Electrochimica Acta, 2013Co-Authors: Yan Tong, Liu Yang, Weining Sun, Guangdi Nie, Zhaojie Wang, Ce WangAbstract:Abstract An electrochemical method for the detection of dopamine based on a glass carbon electrode modified with electrospun CeO 2 /Au Composite Nanofibers was investigated in this article. The CeO 2 /Au Composite Nanofibers were prepared by the electrospinning technique and then annealed in air. The CeO 2 /Au Composite Nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements. Cyclic voltammetry (CV) showed that the electrospun CeO 2 /Au Composite Nanofibers modified carbon glass electrode exhibited an excellent electrocatalytic response to the dopamine (DA). The detection limit (S/N = 3) was as low as 0.056 μM and the sensitivity could reach 127 μA mM −1 cm −2 . All these demonstrated that the electrospun CeO 2 /Au Composite Nanofibers were good electrocatalyst for the oxidation of dopamine.
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Electrochemical determination of dopamine based on electrospun CeO2/Au Composite Nanofibers
Electrochimica Acta, 2013Co-Authors: Yan Tong, Liu Yang, Weining Sun, Guangdi Nie, Zhaojie Wang, Ce WangAbstract:Abstract An electrochemical method for the detection of dopamine based on a glass carbon electrode modified with electrospun CeO 2 /Au Composite Nanofibers was investigated in this article. The CeO 2 /Au Composite Nanofibers were prepared by the electrospinning technique and then annealed in air. The CeO 2 /Au Composite Nanofibers were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements. Cyclic voltammetry (CV) showed that the electrospun CeO 2 /Au Composite Nanofibers modified carbon glass electrode exhibited an excellent electrocatalytic response to the dopamine (DA). The detection limit (S/N = 3) was as low as 0.056 μM and the sensitivity could reach 127 μA mM −1 cm −2 . All these demonstrated that the electrospun CeO 2 /Au Composite Nanofibers were good electrocatalyst for the oxidation of dopamine.
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improved hydrogen monitoring properties based on p nio n sno2 heterojunction Composite Nanofibers
Journal of Physical Chemistry C, 2010Co-Authors: Zhaojie Wang, Wei Wang, Jinghui Sun, Hongnan Zhang, Wei Zheng, Ce WangAbstract:Here we demonstrate the preparation and improved hydrogen monitoring properties based on p-NiO/n-SnO2 heterojunction Composite Nanofibers via the electrospinning technique and calcination procedure. NiO/SnO2 heterojuction Composite Nanofibers were spin-coated on the ceramic tube with a pair of Au electrodes for the detection of hydrogen. Extremely fast response−recovery behavior (∼3s) has been obtained at the operable temperature of 320 °C, based on our gas sensor, with the detection limit of approximate 5 ppm H2. The role of the addition of NiO into the SnO2 Nanofibers and the sensing mechanism has also been discussed in this work.
Zengyuan Pang - One of the best experts on this subject based on the ideXlab platform.
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a room temperature ammonia gas sensor based on cellulose tio2 pani Composite Nanofibers
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016Co-Authors: Zengyuan Pang, Qingqing Wang, Zhanping Yang, Yun Chen, Jinning Zhang, Fenglin HuangAbstract:Abstract We report a facile approach to prepare cellulose/titanium dioxide/polyaniline (cellulose/TiO2/PANI) Composite Nanofibers that involves P–N heterojunctions at the interface of p-type PANI and n-type TiO2. This work found that the P–N heterojunctions could improve ammonia sensing properties of the prepared Nanofibers. Electrospun cellulose acetate Nanofibers were deacetylated to prepare regenerated cellulose Nanofibers, and then the obtained cellulose Nanofibers were immersed into TiO2 sol to adsorb TiO2 nanoparticles onto the surface of them to fabricate cellulose/TiO2 Composite Nanofibers. In-situ polymerization of aniline was utilized to deposit PANI on the surface of cellulose/TiO2 Composite Nanofibers. The gas sensing properties of the prepared Nanofibers were evaluated by a home-made test system. The cellulose/TiO2/PANI and cellulose/PANI Composite Nanofibers were exposed to 10, 30, 50, 100, 150, 200 and 250 ppm ammonia vapor at room temperature, respectively. It was found that the response values and sensitivity of cellulose/TiO2/PANI were much higher than those of cellulose/PANI Composite Nanofibers. Enhanced sensing was obtained by cellulose/TiO2/PANI due to the P–N heterojunctions whose depletion layer would be widened when the Composite Nanofibers were exposed to ammonia, resulting in their resistance increased dramatically.
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A room temperature ammonia gas sensor based on cellulose/TiO2/PANI Composite Nanofibers
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016Co-Authors: Zengyuan Pang, Qingqing Wang, Fenglin Huang, Zhanping Yang, Jinning Zhang, Chen Yun, Qufu WeiAbstract:Abstract We report a facile approach to prepare cellulose/titanium dioxide/polyaniline (cellulose/TiO2/PANI) Composite Nanofibers that involves P–N heterojunctions at the interface of p-type PANI and n-type TiO2. This work found that the P–N heterojunctions could improve ammonia sensing properties of the prepared Nanofibers. Electrospun cellulose acetate Nanofibers were deacetylated to prepare regenerated cellulose Nanofibers, and then the obtained cellulose Nanofibers were immersed into TiO2 sol to adsorb TiO2 nanoparticles onto the surface of them to fabricate cellulose/TiO2 Composite Nanofibers. In-situ polymerization of aniline was utilized to deposit PANI on the surface of cellulose/TiO2 Composite Nanofibers. The gas sensing properties of the prepared Nanofibers were evaluated by a home-made test system. The cellulose/TiO2/PANI and cellulose/PANI Composite Nanofibers were exposed to 10, 30, 50, 100, 150, 200 and 250 ppm ammonia vapor at room temperature, respectively. It was found that the response values and sensitivity of cellulose/TiO2/PANI were much higher than those of cellulose/PANI Composite Nanofibers. Enhanced sensing was obtained by cellulose/TiO2/PANI due to the P–N heterojunctions whose depletion layer would be widened when the Composite Nanofibers were exposed to ammonia, resulting in their resistance increased dramatically.
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fabrication of pa6 tio2 pani Composite Nanofibers by electrospinning electrospraying for ammonia sensor
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014Co-Authors: Zengyuan Pang, Jiapeng Fu, Fenglin HuangAbstract:Abstract Polyamide 6/titanium dioxide (PA6/TiO 2 ) Composite Nanofibers were prepared as templates via electrospinning–electrospraying process, in which TiO 2 nanoparticles were inserted into PA6 Nanofibers mat, and then PA6/TiO 2 /polyaniline (PANI) Composite Nanofibers were fabricated by in-situ polymerization of aniline. Structural and morphological of the prepared Composite Nanofibers were carried out through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Their abilities to detect ammonia were evaluated by a home-made test system. It was found that p–n junction was formed at the interface between PANI and TiO 2 . And due to the p–n junction, the PA6/TiO 2 /PANI Composite Nanofibers exhibited good reproducibility, selectivity and apparent improvement in response than that of PA6/PANI Composite Nanofibers.
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Fabrication of PA6/TiO2/PANI Composite Nanofibers by electrospinning–electrospraying for ammonia sensor
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2014Co-Authors: Zengyuan Pang, Fenglin Huang, Lei Luo, Qufu WeiAbstract:Abstract Polyamide 6/titanium dioxide (PA6/TiO 2 ) Composite Nanofibers were prepared as templates via electrospinning–electrospraying process, in which TiO 2 nanoparticles were inserted into PA6 Nanofibers mat, and then PA6/TiO 2 /polyaniline (PANI) Composite Nanofibers were fabricated by in-situ polymerization of aniline. Structural and morphological of the prepared Composite Nanofibers were carried out through scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). Their abilities to detect ammonia were evaluated by a home-made test system. It was found that p–n junction was formed at the interface between PANI and TiO 2 . And due to the p–n junction, the PA6/TiO 2 /PANI Composite Nanofibers exhibited good reproducibility, selectivity and apparent improvement in response than that of PA6/PANI Composite Nanofibers.
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Ammonia Sensing Behaviors of TiO2-PANI/PA6 Composite Nanofibers
Sensors, 2012Co-Authors: Qingqing Wang, Xianjun Dong, Zengyuan Pang, Xin Xia, Qufu Wei, Fenglin HuangAbstract:Titanium dioxide-polyaniline/polyamide 6 (TiO2-PANI/PA6) Composite Nanofibers were prepared by in situ polymerization of aniline in the presence of PA6 Nanofibers and a sputtering-deposition process with a high purity titanium sputtering target. TiO2-PANI/PA6 Composite Nanofibers and PANI/PA6 Composite Nanofibers were fabricated for ammonia gas sensing. The ammonia sensing behaviors of the sensors were examined at room temperature. All the results indicated that the ammonia sensing property of TiO2-PANI/PA6 Composite Nanofibers was superior to that of PANI/PA6 Composite Nanofibers. TiO2-PANI/PA6 Composite Nanofibers had good selectivity to ammonia. It was also found that the content of TiO2 had a great influence on both the morphology and the sensing property of TiO2-PANI/PA6 Composite Nanofibers.
Cheng Wang - One of the best experts on this subject based on the ideXlab platform.
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water soluble luminescent electrical magnetic trifunctional Composite Nanofibers prepared via electrospinning technique
Materials Letters, 2015Co-Authors: Laidi Xu, Shuhong Wang, Qing Chang, Cheng WangAbstract:Abstract Water-soluble PF-Na/Fe 3 O 4 /PVA luminescent–electrical–magnetic trifunctional Composite Nanofibers were successfully fabricated by electrospinning. It was found that the average diameter of as-prepared Composite Nanofibers was 204 nm. The samples emitted a bright blue fluorescence under UV–illumination and the maximum excitation and emission wavelengths of photoluminescence for the Composite Nanofibers were about 350 nm and 416 nm, respectively. Magnetic hysteresis loops confirmed that the Composite Nanofibers possess superparamagnetic properties and showed a high saturated magnetization ( M s =9.7 emµ/g) at room temperature. The Composite Nanofibers exhibited excellent luminescent, electrical and magnetic properties. In addition, they have good biocompatibility and low toxicity. The luminescent–electrical–magnetic trifunctional Composite Nanofibers have great potential in the biomedical field applications and photoelectric devices.
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High photoelectric PPV/PVA/Ag Composite Nanofibers by co-electrospinning
Journal of Polymer Engineering, 2015Co-Authors: Gao Yang, Li Guo Sun, Shuhong Wang, Cheng Wang, Zhiyao Sun, Jihong Yuan, Linlin Zang, Yan PengfeiAbstract:Abstract Poly(phenylene vinylene)/polyvinyl alcohol/Ag (PPV/PVA/Ag) Composite Nanofibers with excellent photoelectric properties were prepared by coaxial electrospinning using PPV/PVA as the shell and Ag nanoparticles (NPs) as the core, Ag NPs aqueous solution was prepared by the reduction method. The results of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed that Ag NPs are of a face-centered cubic structure, with an average diameter of 46 nm and the Composite Nanofibers have uniform and continuous morphology. With increasing Ag content, the diameters of the Composite Nanofibers decreased from 653 nm to 250 nm. The X-ray diffraction (XRD) patterns verified that in the Composite Nanofibers, the Ag NPs are not transformed. In the photoluminescence spectra, the PPV/PVA/Ag Composite Nanofibers presented red-shift compared with PPV/PVA Nanofibers. Under illumination, the as-prepared PPV/PVA/Ag Composite Nanofibers exhibited relatively high photocurrent intensity.
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Water-soluble luminescent‐electrical‐magnetic trifunctional Composite Nanofibers prepared via electrospinning technique
Materials Letters, 2015Co-Authors: Guo Dechao, Shuhong Wang, Cheng Wang, Gao Yang, Zhiyao Sun, Mingming Dai, Chang Qing, Ma DonggeAbstract:Abstract Water-soluble PF-Na/Fe 3 O 4 /PVA luminescent–electrical–magnetic trifunctional Composite Nanofibers were successfully fabricated by electrospinning. It was found that the average diameter of as-prepared Composite Nanofibers was 204 nm. The samples emitted a bright blue fluorescence under UV–illumination and the maximum excitation and emission wavelengths of photoluminescence for the Composite Nanofibers were about 350 nm and 416 nm, respectively. Magnetic hysteresis loops confirmed that the Composite Nanofibers possess superparamagnetic properties and showed a high saturated magnetization ( M s =9.7 emµ/g) at room temperature. The Composite Nanofibers exhibited excellent luminescent, electrical and magnetic properties. In addition, they have good biocompatibility and low toxicity. The luminescent–electrical–magnetic trifunctional Composite Nanofibers have great potential in the biomedical field applications and photoelectric devices.
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Preparation and Properties of Polyvinylpyrrolidone / Zinc Oxide Composite Nanofibers
Advanced Materials Research, 2011Co-Authors: Li Guo Sun, Shuhong Wang, Yang Xie, Cheng Wang, Peng Fei Yan, Jian ZhangAbstract:Zinc Oxide (ZnO) nanoparticles were firstly synthesized by the hydration of alkoxide. The as-synthesized ZnO were dispersed in the polyvinylpyrrolidone (PVP) solution. PVP/ZnO Composite Nanofibers were prepared via electrospinning the PVP/ZnO mixed solution. The morphology of ZnO nanoparticles and as-spun Nanofibers was measured by scanning electron microscopy (SEM). The as-synthesized ZnO nanoparticles were homogeneous and stable, and their size ranged from 30 to 40 nm. The Composite Nanofibers showed a uniform and continuous morphology. With the increase of the ZnO content in the Composite Nanofibers, the diameter distribution of the Composite Nanofibers became wider. Transmission electron microscopy (TEM) images clearly showed that ZnO nanoparticles were distributed uniformly in the PVP/ZnO Composite Nanofibers without any aggregation, although the ZnO content reached as highly as 6 wt. %. The structures and properties of the Composite Nanofibers were investigated using X-ray diffraction (XRD), thermal gravimetric analysis (TGA), and Combined Stead State Fluorescence and Phosphorescence Lifetime Spectrometer (FLSP).