Luminescent and Transparent Nanopaper Based on Rare-Earth Up-Converting Nanoparticle Grafted Nanofibrillated Cellulose Derived from Garlic Skin
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- 作者：Jingpeng Zhao ; Zuwu Wei ; Xin Feng ; Miao Miao ; Lining Sun ; Shaomei Cao ; Liyi Shi ; Jianhui Fang
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：September 10, 2014
- 年：2014
- 卷：6
- 期：17
- 页码：14945-14951
- 全文大小：461K
- ISSN：1944-8252
文摘
Highly flexible, transparent, and luminescent nanofibrillated cellulose (NFC) nanopaper with heterogeneous network, functionalized by rare-earth up-converting luminescent nanoparticles (UCNPs), was rapidly synthesized by using a moderate pressure extrusion paper鈥搈aking process. NFC was successfully prepared from garlic skin using an efficient extraction approach combined with high frequency ultrasonication and high pressure homogenization after removing the noncellulosic components. An efficient epoxidation treatment was carried out to enhance the activity of the UCNPs (NaYF4:Yb,Er) with oleic acid ligand capped on the surface. The UCNPs after epoxidation then reacted with NFC in aqueous medium to form UCNP-grafted NFC nanocomposite (NFC鈥揢CNP) suspensions at ambient temperature. Through the paper-making process, the assembled fluorescent NFC鈥揢CNP hybrid nanopaper exhibits excellent properties, including high transparency, strong up鈭抍onversion luminescence, and good flexibility. The obtained hybrid nanopaper was characterized by transmission electron microscopy (TEM), atomic force microscope (AFM), Fourier transform infrared spectroscopy (FTIR), field emission-scanning electron microscope (FE-SEM), up鈭抍onversion luminescence (UCL) spectrum, and ultraviolet and visible (UV鈥搗is) spectrophotometer. The experimental results demonstrate that the UCNPs have been successfully grafted to the NFC matrix with heterogeneous network. And the superiorly optical transparent and luminescent properties of the nanopaper mainly depend on the ratio of UCNPs to NFC. Of importance here is that, NFC and UCNPs afford the nanopaper a prospective candidate for multimodal anti-counterfeiting, sensors, and ion probes applications.