One-Step Reduction and Surface Modification of Graphene Oxide by 3-Hydroxy-2-Naphthoic Acid Hydrazide and Its Polypropylene Nanocomposites

Xiang-Nan Xu; Xiao-Na Guan; Hui-Hua Zhou; Yue-Feng Zhu

doi:10.3390/nano7020025

One-Step Reduction and Surface Modification of Graphene Oxide by 3-Hydroxy-2-Naphthoic Acid Hydrazide and Its Polypropylene Nanocomposites

Nanomaterials (Basel). 2017 Jan 24;7(2):25. doi: 10.3390/nano7020025.

Authors

Xiang-Nan Xu^{1

2}, Xiao-Na Guan^{3

4}, Hui-Hua Zhou^{5

6}, Yue-Feng Zhu^{7

8}

Affiliations

¹ School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. xxn14@mails.tsinghua.edu.cn.
² Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. xxn14@mails.tsinghua.edu.cn.
³ School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. gxn16@mails.tsinghua.edu.cn.
⁴ Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. gxn16@mails.tsinghua.edu.cn.
⁵ School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. zhouhh@tsinghua.edu.cn.
⁶ National Center for Electron Microscopy Beijing, Beijing 100084, China. zhouhh@tsinghua.edu.cn.
⁷ School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China. yfzhu@tsinghua.edu.cn.
⁸ Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing 100084, China. yfzhu@tsinghua.edu.cn.

Abstract

3-Hydroxy-2-naphthoic acid hydrazide (HNH), a new reductant and modifier, was applied to reduce and modify graphene oxide (GO) in a one-step process. The obtained HNH reduced graphene oxide (HNH-rGO) was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, X-ray photoelectron spectroscopic (XPS) and Fourier transform infrared spectra (FTIR). The results demonstrated that GO was successfully reduced to graphene and the surface of HNH-rGO was grafted with HNH. The interlayer space was increased from 0.751 nm to 1.921 nm, and its agglomeration was much more attenuated compared with GO. HNH-rGO/polypropylene and graphene/polypropylene composites were synthesized through melt-blending method. The viscosity was enhanced with increased addition of graphene and surface modified graphene demonstrated stronger rheological behavior improving effect than the untreated graphene.

Keywords: graphene; nanocomposites; reduction; surface modification.