Synthesis and characterization of a UV absorbent-intercalated Zn–Al layered double hydroxide

Feng, Yongjun; Li, Dianqing; Yuan, Wei; Evans, David G.; Duan, Xue

doi:10.1016/j.polymdegradstab.2005.06.006

Cited by 143 publications

(68 citation statements)

References 13 publications

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“…The XRD pattern of the contrast MgAl-CO3-LDH ( Figure 1(a)) exhibits typical characteristics of the LDH phase corresponding to the basal spacing of 0.75 nm, which agrees well with the literature data. 20 After intercalation, the d-spacing of MgAl-DBS-LDH is expanded to 2.96 nm, which clearly demonstrating the successful intercalation of DBS into the LDH layer (Figure 1(b)). However, for BP-1 incorporated MgAl-DBS-LDH, there is decrease in d-spacing, but the well-ordered layered structure is maintained (Figure 1(c)).…”

mentioning

confidence: 89%

“…[10][11][12][13][14][15][16] Over the past decades, great improvement has been advanced by intercalation of organic anions into the LDH interlayer to produce multifunctional materials such as UV absorbent. Despite many researches focused on intercalation of organic UV absorbents such as cinnamic acid, naphthalene sulfonic acid, benzoic acid and their derivatives into LDH, 3,[18][19][20][21][22] only few about benzophenone derivatives were reported. 8,17,20,23 Moreover, most of the common benzophenone series UV absorber is hydrophobic, so it is difficult to intercalate these hydrophobic molecules into the LDH interlayer.…”

Section: Introductionmentioning

confidence: 99%

“…Despite many researches focused on intercalation of organic UV absorbents such as cinnamic acid, naphthalene sulfonic acid, benzoic acid and their derivatives into LDH, 3,[18][19][20][21][22] only few about benzophenone derivatives were reported. 8,17,20,23 Moreover, most of the common benzophenone series UV absorber is hydrophobic, so it is difficult to intercalate these hydrophobic molecules into the LDH interlayer. Many studies have shown that surfactant modified clays can enhance their sorptive capacity for organic molecules, such as trichloroethylene, tetrachloroethylene, benzophenone, and phenol compounds, etc.…”

Section: Introductionmentioning

confidence: 99%

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

Li¹,

Shen²,

Liu³

et al. 2014

Bulletin of the Korean Chemical Society

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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.

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mentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Li¹,

Shen²,

Liu³

et al. 2014

Bulletin of the Korean Chemical Society

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“…For example, LDHs were used as additives in polymers [9], as adsorbents for water remediation [18], as precursors for functional materials, applied in the synthesis of pharmaceuticals [19], in photochemistry [20] and electrochemistry [21]. Moreover, LDHs prepared directly and their calcined mixed metal oxide (MMOs) products have been widely used as an actual solid base catalyst, and promising precursors or supports of catalysts in a variety of fields including organic synthesis, adsorption of organic wastes or heavy metals ions, and the decomposition of volatile organic compounds [22].…”

Section: Ldh-based Composite Materialsmentioning

confidence: 99%

Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Miras

Song

2017

Catalysts

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Layered double hydroxides (LDHs) are an important large class of two-dimensional (2D) anionic lamellar materials that possess flexible modular structure, facile exchangeability of inter-lamellar guest anions and uniform distribution of metal cations in the layer. Owing to the modular accessible gallery and unique inter-lamellar chemical environment, polyoxometalates (POMs) intercalated with LDHs has shown a vast array of physical properties with applications in environment, energy, catalysis, etc. Here we describe how polyoxometalate clusters can be used as building components for the construction of systems with important catalytic properties. This review article mainly focuses on the discussion of new synthetic approaches developed recently that allow the incorporation of the element of design in the construction of a fundamentally new class of materials with pre-defined functionalities in catalytic applications. Introducing the element of design and taking control over the finally observed functionality we demonstrate the unique opportunity for engineering materials with modular properties for specific catalytic applications.Keywords: layered double hydroxides; polyoxometalates; intercalated materials Layered Double Hydroxides (LDHs)-Intro BackgroundLayered double hydroxides (LDHs) or hydrotalcite-like compounds are a large family of two-dimensional (2D) anionic clay materials made up of positively charged brucite-like layers with an interlayer region containing charge compensating anions and solvation molecules, which can be represented by the general formula -4]. As shown in Figure 1 and generally in the range of 0.20-0.33, which occupy the space between the layers compensating for the positive charge and inducing stability in the overall structure [5,6]. The M II /M III -based edge shared octahedra are used to construct 2D infinite sheets, whereas hydroxyl groups are organized on the vertices of the octahedra with the hydrogen atoms pointing toward the interlayer region, as a consequence forming a complex network of hydrogen bonds with the interlayer anions and water molecules [1,[7][8][9][10]. LDH-based materials are very attractive systems due to their robust structure,

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“…16 The peaks observed in the 400-600 cm −1 range correspond to the translation vibration caused by Zn-OH and Al-OH and the deformation vibration caused by HO-Zn-Al-OH. 17 The FTIR spectrum of PMCA is shown in Fig. 3(b).…”

Section: A Ftir Analysismentioning

confidence: 99%

Intercalation of p-methycinnamic acid anion into Zn-Al layered double hydroxide to improve UV aging resistance of asphalt

Peng

Dai²,

et al. 2015

AIP Advances

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A UV absorber, p-methycinnamic acid (PMCA), was intercalated into Zn-Al layered double hydroxide (LDH) by calcination recovery. Fourier transform infrared spectroscopy showed that the PMCA anions completely replaced the CO32− anions in the interlayer galleries of Zn-Al-LDH containing PMCA anions (Zn-Al-PMCA-LDH). X-ray diffraction and transmission electron microscopy showed that the interlayer distance increased from 0.78 nm to 1.82 nm after the substitution of PMCA anions for CO32− anions. The similar diffraction angles of the CO32− anion-containing Zn-Al-LDH (Zn-Al-CO32−-LDH) and the Zn-Al-CO32−-LDH/styrene–butadiene–styrene (SBS) modified asphalt implied that the asphalt molecules do not enter into the LDH interlayer galleries to form separated-phase structures. The different diffraction angles of Zn-Al-PMCA-LDH and Zn-Al-PMCA-LDH/SBS modified asphalt indicated that the asphalt molecules penetrated into the LDH interlayer galleries to form an expanded-phase structure. UV-Vis absorbance analyses showed that Zn-Al-PMCA-LDH was better able to block UV light due to the synergistic effects of PMCA and Zn-Al-LDH. Conventional physical tests and atomic force microscopy images of the SBS modified asphalt, Zn-Al-CO32−-LDH/SBS modified asphalt and Zn-Al-PMCA-LDH/SBS modified asphalt before and after UV aging indicated that Zn-Al-PMCA-LDH improved the UV aging resistance of SBS modified asphalts.

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Synthesis and characterization of a UV absorbent-intercalated Zn–Al layered double hydroxide

Cited by 143 publications

References 13 publications

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

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

Polyoxometalate (POM)-Layered Double Hydroxides (LDH) Composite Materials: Design and Catalytic Applications

Intercalation of p-methycinnamic acid anion into Zn-Al layered double hydroxide to improve UV aging resistance of asphalt

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