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Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials
นักวิจัย : Liu, Jincheng , Liu, Lei , Bai, Hongwei , Wang, Yinjie , Sun, Darren Delai
คำค้น : DRNTU::Engineering::Environmental engineering::Water treatment , DRNTU::Engineering::Materials::Ecomaterials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Liu, J., Liu, L., Bai, H., Wang, Y. & Sun, D. D. (2011) Gram-Scale Production of Graphene Oxide-TiO2 Nanorod Composites: Towards High-Activity Photocatalytic Materials. Applied Catalysis B: Environmental, 106(1-2), 76-82. , http://hdl.handle.net/10220/7485 , http://dx.doi.org/10.1016/j.apcatb.2011.05.007
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Applied catalysis B: environmental
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Here we present a simple two-phase assembling method to produce high-quality graphene oxide-TiO2 nanorod composites (GO-TiO2 NRCs) on gram scale. TiO2 nanorods dispersed in toluene are synthesized from a facile two-phase hydrothermal method. The effective attachment of TiO2 nanorods on the whole GO sheets at the water-toluene interface is confirmed by Transmission Electron Microscope (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The as-synthesized TiO2 nanorods show a slightly higher efficiency in the photocatalytic degradation of C. I. Acid Orange 7 (AO7) irradiated under UV light (λ=254 nm) and higher antibacterial activity under simulated sunlight than that of TiO2 nanoparticles with the same diameter. After combined with graphene oxide (GO), the GO-TiO2 NRCs show much higher photocatalytic activities than that of TiO2 nanorods alone and the GO-TiO2 nanoparticle composites (GO-TiO2 NPCs). The ratio of TiO2 and GO has no evident effect on the photocatalytic activity of GO-TiO2 NRCs when all the TiO2 nanorods are anchored on the GO sheets. The higher photocatalytic activity of GO-TiO2 NRCs is ascribed to the anti-charge recombination and the more (101) facets. Considering the superior photocatalytic activity of GO-TiO2 NRCs and the fact that they can been easily mass-produced, we expect this material may find important applications in environmental engineering and other fields.

บรรณานุกรม :
Liu, Jincheng , Liu, Lei , Bai, Hongwei , Wang, Yinjie , Sun, Darren Delai . (2554). Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Liu, Jincheng , Liu, Lei , Bai, Hongwei , Wang, Yinjie , Sun, Darren Delai . 2554. "Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Liu, Jincheng , Liu, Lei , Bai, Hongwei , Wang, Yinjie , Sun, Darren Delai . "Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Liu, Jincheng , Liu, Lei , Bai, Hongwei , Wang, Yinjie , Sun, Darren Delai . Gram-scale production of graphene oxide-TiO2 nanorod composites : towards high-activity photocatalytic materials. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.