Fabrication, characterization and photocatalytic activity of La-doped ZnO nanowires

Jia, Tiekun; Wang, Weimin; Long, Fei; Fu, Zhengyi; Wang, Hao; Zhang, Qingjie

doi:10.1016/j.jallcom.2009.04.153

Cited by 198 publications

(92 citation statements)

References 35 publications

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“…Additionally, peak centering at about 445 nm just for ZnOCd (0.1) sample was caused by the transition between the vacancies of oxygen and interstitial oxygen. Also, the broad peak centering about 515 nm originated from the ionized oxygen vacancies in the valance, and weak peak centering at about 547 nm was also observed, which corresponded to the transition of oxygen vacancies [38].…”

Section: Optical Properties Of Samplesmentioning

confidence: 98%

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

Khodadadi

Bordbar

Yeganeh-Faal³

2015

J Sol-Gel Sci Technol

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In the present study, undoped ZnO and CdZnO nanostructures with different weight ratios of cadmium were synthesized by the sol-gel method. Structural and optical properties were investigated by Fourier transform spectroscopy, UV-Vis spectroscopy, scanning electron microscopy, energy-dispersive analytical X-ray, X-ray diffraction, and photoluminescence spectroscopy methods. Moreover, the direct band gap is calculated by Tauc's approach. Furthermore, photocatalytic activity of all samples has been investigated under UV irradiation in an aqueous medium. Compared with pure ZnO, the band gap of the Cd-ZnO decreases and depends on the content of dopants. In addition, photocatalytic activity improves in the presence of a small amount (5 wt%) of cadmium dopant. Graphical Abstract

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Section: Optical Properties Of Samplesmentioning

confidence: 98%

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

Khodadadi

Bordbar

Yeganeh-Faal³

2015

J Sol-Gel Sci Technol

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“…As was reported in our previous work [29][30][31], 40 mL RhB aqueous solution with a concentration of 1.0 × 10 −5 M was added into the culture dish with 0.05 g prepared photocatalyst. A 30 W fluorescent lamp was used as light source to trigger the photocatalytic reaction, and the distance between the lamp and the dish coated by the photocatalysts was about 10 cm.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Hydrothermal synthesis technique, an effectively and simply controlled solution-based method, involves the formation of well-crystallized products at relatively low temperatures, which has been widely adopted for the synthesis of nanostructured photocatalysts with tailored morphologies [29][30][31]. In this study, we reported a facile hydrothermal synthesis route for preparing 3D hierarchical Bi 2 S 3 architectures assembled by 2D nanoplatelets.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets

Jia

Long

et al. 2016

Crystals

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3D hierarchical Bi 2 S 3 architectures have been successfully synthesized via a simple and effective hydrothermal process. The as-prepared Bi 2 S 3 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption-desorption isotherms, and UV-vis diffuse reflectance spectrum (DRS). The observation of field emission scanning electron microscope (FESEM) images showed that numerous nanoplatelets are randomly arranged and interconnected with each other, which are assembled into 3D hierarchical Bi 2 S 3 architectures. The photocatalytic activity of the as-prepared Bi 2 S 3 samples was evaluated by the degradation of Rhodamine B (RhB) under visible light irradiation. The effect of hydrothermal temperature, reaction time, pH value and shape on the photocatalytic efficiency of the as-prepared Bi 2 S 3 samples was investigated. The results showed that 3D hierarchical Bi 2 S 3 architectures prepared at 165 • C for 12 h at a pH of 2.4 exhibits high photocatalytic efficiency, which could be ascribed to the synergetic effect of the shape, surface area, crystallinity, band gap and crystalline size.

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“…ZnO gets increasing attention due to its excellent electrical and optoelectronic properties. It can be used for a wide range of application, such as solar cells, gas sensors, optoelectronic devices, and surface acoustic waveguides [6][7][8]. Moreover, it exhibits better performance in degrading of various environmental pollutants: pesticides, detergents, dyes, and volatile organic compounds by transforming into carbon dioxide, water, and mineral acids under ultraviolet-visible (UV) light irradiation [6,9].…”

Section: Introductionmentioning

confidence: 99%

“…Various physical and chemical routes were used to synthesize RE 3? -doped nanostructured material: electrochemical deposition [1], hydrothermal method [2,4,6], chemical vapor deposition (CVD) [3], sol-gel method [5,10,11], precipitation [9], solution combustion [12], and magnetron sputtering [13].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of La-doped ZnO nanostructure materials synthesized by sonochemical method

et al. 2015

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ZnO nanostructure materials doped with different La contents were synthesized by sonochemical method. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and Fourier transform infrared spectroscopy (FTIR). In this research, XRD patterns of pure ZnO and La-doped ZnO are specified as hexagonal wurtzite ZnO structure with no detection of La 2 O 3 phase. SEM and TEM characterization revealed the flower shape of pure ZnO built-up from petals of hexagonal prisms with hexagonal pyramid tips. Upon doping with La, the flower-shaped ZnO is broken into individual 1D prism-like nanorods. Photocatalytic activities of the as-synthesized products were determined by measuring the degradation of methylene blue (MB) under ultraviolet-visible (UV) light irradiation. Among them, the 2.0 mol% La-doped ZnO shows better photocatalytic properties than any other products.

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Fabrication, characterization and photocatalytic activity of La-doped ZnO nanowires

Cited by 198 publications

References 35 publications

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

Optical, structural, and photocatalytic properties of Cd-doped ZnO powders prepared via sol–gel method

Facile Synthesis, Characterization, and Visible-light Photocatalytic Activities of 3D Hierarchical Bi2S3 Architectures Assembled by Nanoplatelets

Photocatalytic activity of La-doped ZnO nanostructure materials synthesized by sonochemical method

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