title: Organo-LDH synthesized via tricalcium aluminate hydration in the present of Na-dodecylbenzenesulfate aqueous solution and subsequent investigated by near-infrared and mid-infrared.
abstract: Na-dodecylbenzenesulfate (SDBS), a natural anionic surfactant, has been successfully intercalated into a Ca based LDH host structure during tricalcium aluminate hydration in the presence of SDBS aqueous solution (CaAl-SDBS-LDH). The resulting product was characterized by powder X-ray diffraction (XRD), mid-infrared (MIR) spectroscopy combined with near-infrared (NIR) spectroscopy technique, thermal analysis (TG-DTA) and scan electron microscopy (SEM). The XRD results revealed that the interlayer distance of resultant product was expanded to 30.46 Å. MIR combined with NIR spectra offered an effective method to illustrate this intercalation. The NIR spectra (6000-5500 cm(-1)) displayed prominent bands to expound SDBS intercalated into hydration product of C3A. And the bands around 8300 cm(-1) were assigned to the second overtone of the first fundamental of CH stretching vibrations of SDBS. In addition, thermal analysis showed that the dehydration and dehydroxylation took place at ca. 220 °C and 348 °C, respectively. The SEM results appeared approximately hexagonal platy crystallites morphology for CaAl-SDBS-LDH, with particle size smaller and thinner.
authors.affiliation: Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330047, China; School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China; Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, Queensland 4001, Australia.
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Environmental and Chemical Engineering, Nanchang University, Nanchang 330047, China.
authors.forename: Tianqi
authors.initials: T
authors.lastname: Wang
authors.affiliation: School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200072, China. Electronic address: zhangping@ncu.edu.cn.
authors.forename: Guangren
authors.initials: G
authors.lastname: Qian
authors.affiliation: Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, 2 George Street, GPO Box 2434, Brisbane, Queensland 4001, Australia. Electronic address: r.frost@qut.edu.au.
authors.forename: Ray L
authors.initials: RL
authors.lastname: Frost
mesh_terms: D017607:Aluminum Compounds / Q000737:chemistry*; D004055:Differential Thermal Analysis; D006878:Hydroxides / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D012996:Solutions; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013431:Sulfates / Q000737:chemistry*; D013463:Sulfuric Acid Esters / Q000737:chemistry*; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D017607:Aluminum Compounds; D006878:Hydroxides; D012996:Solutions; D013431:Sulfates; D013463:Sulfuric Acid Esters; D014867:Water; C031356:hydroxide ion; C025208:phenylsulfate
keywords: Intercalation; Middle-infrared (MIR) spectroscopy; Near-infrared (NIR); Sodium dodecyl benzene sulfonate (SDBS); Tricalcium aluminate (C(3)A)