19 research outputs found

    Synthesis, Photocatalytic and Electrocatalytic Activities of Wormlike GdFeO<sub>3</sub> Nanoparticles by a Glycol-Assisted Sol–Gel Process

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    Wormlike GdFeO<sub>3</sub> (GFO) nanoparticles were synthesized by a glycol-assisted sol–gel rapid calcination process. The as-synthesized GdFeO<sub>3</sub> was characterized by X-ray diffraction, transmission electron microscopy, differential scanning calorimeter and thermogravimetric analysis, Fourier transformed infrared spectroscopy, and UV–vis absorption spectroscopy. The visible-light-responsive photocatalytic activity of GdFeO<sub>3</sub> nanoparticles was evaluated by the photodegradation of Rhodamine B under visible light. The synergism of semiconductor-photocatalyzed oxidation and heterogeneous photo-Fenton-like reaction can markedly promote the photodegradation with a booming catalytic activity (<i>k</i> = 1.2814 h<sup>–1</sup>). Compared with the bulk, the catalytic activity of the GFO–H<sub>2</sub>O<sub>2</sub> system was improved about 80 times. Meanwhile, the glass carbon electrode decorated with the resulting nanoparticles was used to examine the electrocatalytic behavior for <i>p</i>-nitrophenol reduction in a basic solution. The results show the obtained GdFeO<sub>3</sub> nanoparticles with excellent photocatalytic and electrocatalytic activities

    Composition of ITS sequences of 8 <i>Actinidia</i> species.

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    Composition of ITS sequences of 8 Actinidia species.</p

    Leaf image of 8 species of <i>Actinidia</i>.

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    Note: All pictures from Plant Photo Bank of China.</p

    Samples information.

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    Samples information.</p

    Intra-specific genetic distance of 8 species of <i>Actinidia</i>.

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    Intra-specific genetic distance of 8 species of Actinidia.</p

    Genetic distances among 8 species of <i>Actinidia</i>.

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    Genetic distances among 8 species of Actinidia.</p

    Phylogenetic tree of 8 species of <i>Actinidia</i>.

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    (a) Analysis of ITS sequences fragments; (b) Analysis of ITS1 sequences fragments; (c) Analysis of ITS2 sequences fragments.</p

    Analysis of base variation in 8 species of <i>Actinidia</i>.

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    Analysis of base variation in 8 species of Actinidia.</p

    Synthesis of TiO<sub>2</sub> Nanoparticles on Plasma-Treated Carbon Nanotubes and Its Application in Photoanodes of Dye-Sensitized Solar Cells

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    Carbon nanotubes (CNTs) have attracted much interest because of their special physicochemical properties. Herein, O<sub>2</sub> plasma-treated CNTs (denoted as PS-CNTs) are incorporated within a TiO<sub>2</sub> matrix (denoted as PS-CNTs/TiO<sub>2</sub>) as photoanodes in dye-sensitized solar cells (DSSCs). The PS-CNTs/TiO<sub>2</sub> composites provide more uniform holes and rough surface over the photoanode and also provide a greater degree of dye adsorption and lower levels of charge recombination, as compared to either chemical modified CNTs/TiO<sub>2</sub> (denoted as CM-CNTs/TiO<sub>2</sub>) or TiO<sub>2</sub> alone. The high dispersion of TiO<sub>2</sub> on PS-CNTs can improve the electron conduction paths, leads to high electron transfer efficiency, and thereby results in the high performance of the DSSC devices. Herein, the PS-CNTs/TiO<sub>2</sub>-based working photoanode demonstrates a conversion efficiency of 6.34% in DSSCs, which is ∼75% higher than that of conventional TiO<sub>2</sub>-based devices
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