Encapsulation of 2,4-Dihydroxybenzophenone into Dodecylbenzenesulfonate Modified Layered Double Hydroxide for UV Absorption Properties

Abstract

New organic-inorganic composite of 2,4-dihydroxybenzophenone (BP-1) encapsulation into dodecylbenzenesulfonate (DBS) modified layered double hydroxide (LDH) was successfully prepared. The surface, structural, thermal and absorption properties of the BP-1/DBS-LDH nanohybrid was characterized by BET analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TG) and diffuse reflectance UV-Vis absorbance spectra (DRUV-vis). The interlayer configuration of composite and the adsorption mechanism of BP-1 on MgAl-DBS-LDH were discussed. It was suspected that DBS anions located in the form of monolayer arrangement with a 75° anti parallel angle between dodecylbenzenesulfonate chain axis. The diffuse reflectance UV-Vis absorbance results revealed that the UV absorbing wavelength of BP-1/DBS-LDH evidently extends to about 400 nm, which shows that the BP-1/DBS-LDH has the potential application as a UV absorber.

Component, Formulation and Regulatory of Sunscreen Materials: A Brief Review

“…The main aim of intercalation of sunscreens into LDH nano galleries has been to enhance their photostability, to increase photoprotection, to prevent dermal contact and impede dermal penetration. [63][64][65][66][67][68][69][70] LDH is safe and provides a suitable matrix for use as a face and body sunscreen formulation for photoprotection. 71) In addition, it has been proven that hydrotalcite-type doublecoated hydroxide (HTlc) is often applied in cosmetics and a good matrix for sunscreen formulations.…”

Stable UV absorption material synthesized by intercalation of squaric acid anion into layered double hydroxides

“…Typically, layered double hydroxides (LDHs) have attracted significant attention due to their potential applications as catalysts, ab-*Corresponding author, e-mail: li.shi.feng@163.com Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/1/15 6:33 PM sorbents, controlled-release formulations, and UV absorbers Costantino et al, 2009;Bugatti et al, 2011;Galejová et al, 2009;Tóth et al, 2014;Cao et al, 2013;Rives et al, 2014;Zümreoglu-Karan & Ay, 2012;Li et al, 2014aLi et al, , 2014bTheiss et al, 2013;Chakraborti et al, 2012;Trinidade Cursino et al, 2013). However, some problems concerning organic molecules deintercalation from LDHs by the anion exchange reaction with carbonate ion occur (ElToni et al, 2004).…”