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納米銀-石墨烯復(fù)合材料的制備及可見(jiàn)光光催化性能
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暨南大學(xué)化學(xué)系,暨南大學(xué)化學(xué)系,暨南大學(xué)化學(xué)系,暨南大學(xué)化學(xué)系,暨南大學(xué)化學(xué)系

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國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)51172099, 21476052, 21271087)


Preparation and Visible Light Photocatalytic Properties of Ag-RGO composite
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    摘要:

    以聚乙烯吡咯烷酮(PVP)為還原劑及穩(wěn)定劑,在溫控條件(60 ℃)下制備了納米銀-石墨烯(Ag-RGO)復(fù)合材料。采用X射線(xiàn)粉末衍射、透射電鏡、紫外-可見(jiàn)吸收光譜、光電子能譜、紅外光譜等對(duì)該復(fù)合材料的結(jié)構(gòu)及形貌進(jìn)行了表征。結(jié)果表明,RGO表面所負(fù)載的納米Ag粒子尺寸小,分散性好,與RGO結(jié)合牢固。以酸性橙7(AO7)為目標(biāo)污染物,進(jìn)行了可見(jiàn)光光催化活性測(cè)試。結(jié)果表明,樣品0.2Ag-RGO可在120 min內(nèi)將AO7降解完全?；钚晕锓N捕獲實(shí)驗(yàn)揭示Ag-RGO對(duì)AO7的高效降解源自Ag納米粒子的表面等離子共振及RGO快速傳導(dǎo)電子的協(xié)同效應(yīng)。

    Abstract:

    Ag-Graphene composites (Ag-RGO) were prepared using poly (N-vinyl-2-pyrrolidone) (PVP) as reductant and stabilizer under 60℃ reaction conditions. The synthesized Ag-RGO were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Uv-vis absorption spectra, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), respectively. The results showed that Ag nanoparticles with small-size and excellent dispersion were anchored firmlyon RGO sheet. The photocatalytic activity was evaluated by oxidation of AO7 under visible light irradiation. AO7 could be almost degraded completely within 120 min by 0.2Ag-RGO sample. The origin of high photocatalytic activity of Ag-RGO was discussed, which was mainly ascribed to the surface plasmo resonance effect of Ag nanoparticles in Ag-RGO composites. In addition, RGO acted as electron transmission channels. The synergistic effects induced by RGO also contributed to the high photocatalytic activity.

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許若鵬,石磊,黃浪歡,王亞玲,譚紹早.納米銀-石墨烯復(fù)合材料的制備及可見(jiàn)光光催化性能[J].稀有金屬材料與工程,2017,46(6):1694~1698.[xuruopeng, shilei, huanglanghuan, wangyaling, tanshaozao. Preparation and Visible Light Photocatalytic Properties of Ag-RGO composite[J]. Rare Metal Materials and Engineering,2017,46(6):1694~1698.]
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  • 收稿日期:2015-01-28
  • 最后修改日期:2015-07-30
  • 錄用日期:2015-09-07
  • 在線(xiàn)發(fā)布日期: 2017-11-07
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