Synthesis and UV absorption properties of 5-sulfosalicylate-intercalated Zn-Al layered double hydroxides

Journal Article · Sun Apr 15 04:00:00 EDT 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.01.026· OSTI ID:21015769

Linyan, Zhang ^[1]; Yanjun, Lin ^[1]; Zhenjun, Tuo ^[1]; Evans, David G ^[1]

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1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029 (China)

5-sulfosalicylic acid (SSA) anions have been intercalated into layered double hydroxides (LDHs) by an anion-exchange reaction using ZnAl-NO{sub 3}-LDHs as a precursor. The samples were characterized by XRD, FT-IR, TG-DTA/MS and UV-visible spectroscopy. The results show that the NO{sub 3} {sup -} anions in the precursor have been completely replaced by SSA anions to give ZnAl-SSA-LDHs having a high degree of crystallinity. Detailed studies reveal the existence of a supramolecular structure in ZnAl-SSA-LDHs involving electrostatic attraction between opposite charges, hydrogen bonding and other weak chemical bonding interactions between host layers and SSA anions. The thermal stability of ZnAl-SSA-LDHs is considerably enhanced compared with that of a mixture of ZnAl-NO{sub 3}-LDHs and SSA. After addition of 2.0 wt% ZnAl-SSA-LDHs to polypropylene (PP), the resistance of the polymer to UV degradation is significantly improved. - Graphical abstract: UV-visible absorbance curves of SSA (a), ZnAl-NO{sub 3}-LDHs precursor (b) and ZnAl-SSA-LDHs (c)

• OSTI ID: 21015769
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 180; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABSORPTION
ALUMINIUM COMPOUNDS
CHEMICAL BONDS
DIFFERENTIAL THERMAL ANALYSIS
FOURIER TRANSFORMATION
HYDROXIDES
INFRARED SPECTRA
ION EXCHANGE
LAYERS
NITRATES
POLYPROPYLENE
SPECTROSCOPY
SYNTHESIS
X-RAY DIFFRACTION
ZINC COMPOUNDS