Next Article in Journal
Ordering of Primary Carbonitrides in an Austenitic Steel Revealed by Transmission Electron Microscopy and Atom Probe Tomography
Previous Article in Journal
Model Establishment of a Co-Based Metal Matrix with Additives of WC and Ni by Discrete Element Method
Article

Synthesis and Characterization of a Dual-Cation Organomontmorillonite Nanocomposite

1
School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
2
Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, Guangxi University, Nanning 530004, China
3
Sinosteel Mining Company Limited, Sinosteel Corporation, Beijing 100080, China
4
College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
5
Materials Research Laboratory, Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(11), 2320; https://doi.org/10.3390/ma11112320
Received: 23 October 2018 / Revised: 11 November 2018 / Accepted: 15 November 2018 / Published: 19 November 2018
In this study, a novel dual-cation organomontmorillonites (OMt) nanocomposite was synthesized by two kinds of modifiers cetyltrimethylammonium chloride and cysteamine hydrochloride, and the adsorption behavior of modifiers into montmorillonite (Mt) has been investigated. The OMt were characterized by techniques, such as X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, and thermogravimetric and differential thermal (TG-DTA) analyses. The effects of temperature, contact time, the order of addition and the concentration of organic modifiers on the amounts of organics adsorbed were investigated. The adsorption amount of cetyltrimethylammonium chloride (CTAC) and cysteamine hydrochloride (CSH) increased with the increase of the added CTAC amount and contact time, while the addition order of modifiers and modification temperature had no significant effect on the actual adsorption amount of CTAC and CSH on Mt, as confirmed by the XRD patterns. The experimentally determined isotherms showed a good fit with the Langmuir adsorption models. The adsorption kinetics demonstrated that the adsorption of CTAC and CSH by Mt followed the pseudo-second-order model, and CTAC adsorption rate on Mt was faster than that of CSH. FTIR spectrum clearly revealed the incorporation of surfactant ions into the interlayer region. The TG-DTA analyses showed that the total mass losses of OMt strongly depended on the molecular volume of modifiers. View Full-Text
Keywords: montmorillonite; modifier; adsorption; structural characteristics montmorillonite; modifier; adsorption; structural characteristics
Show Figures

Figure 1

MDPI and ACS Style

Wang, G.; Xiao, H.; Zhang, S.; Qiu, J.; Li, H.; Yang, M.; Ma, S.; Komarneni, S. Synthesis and Characterization of a Dual-Cation Organomontmorillonite Nanocomposite. Materials 2018, 11, 2320. https://doi.org/10.3390/ma11112320

AMA Style

Wang G, Xiao H, Zhang S, Qiu J, Li H, Yang M, Ma S, Komarneni S. Synthesis and Characterization of a Dual-Cation Organomontmorillonite Nanocomposite. Materials. 2018; 11(11):2320. https://doi.org/10.3390/ma11112320

Chicago/Turabian Style

Wang, Guifang, Huizhen Xiao, Shuai Zhang, Jun Qiu, Hengjun Li, Meijin Yang, Shaojian Ma, and Sridhar Komarneni. 2018. "Synthesis and Characterization of a Dual-Cation Organomontmorillonite Nanocomposite" Materials 11, no. 11: 2320. https://doi.org/10.3390/ma11112320

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop