Selective adsorption behavior of Pb(II) by mesoporous silica SBA-15-supported Pb(II)-imprinted polymer based on surface molecularly imprinting technique

Liu, Yan; Liu, Zhanchao; Gao, Jie; Dai, Jiangdong; Han, Juan; Wang, Yun; Xie, Jimin; Yan, Yongsheng

doi:10.1016/j.jhazmat.2010.10.105

Cited by 254 publications

(97 citation statements)

References 51 publications

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“…In the above equations, T is the temperature in kelvin, and R (J mol -1 K -1 ) is the gas constant [68,69]. The values of DH and DS were obtained from the slope and intercept, respectively, of van't Hoff plots (Fig.…”

Section: Thermodynamic Parametersmentioning

confidence: 99%

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Costa

Garcia

Santos

et al. 2015

J Sol-Gel Sci Technol

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The mesoporous materials MCM-41 and the functionalized inorganic-organic material p-aminobenzoic acid-MCM-41 (PABA-MCM-41) were used as adsorbents to remove the PAHs benzo[k]fluoranthene and benzo[b]fluoranthene from aqueous media. Both MCM-41 and PABA-MCM-41 exhibited the hexagonal mesostructures typical of the M41S family, as confirmed by SAXS, with type IV isotherms and type H1 hysteresis. The materials showed uniform mesopore size distributions, high surface areas, and thermal stability. Adsorption tests showed that for both mesoporous materials, the quantity adsorbed (q e ) increased for higher initial PAH concentrations, and adsorption equilibrium was reached in around 90 min. The experimental kinetic data were fitted using the pseudosecond-order model, and the adsorption process could be described by the Langmuir isotherm. At higher temperatures, there were increases in the initial rates of adsorption and the kinetic constants for adsorption of the PAHs by PABA-MCM-41. The thermodynamic parameters indicated that the process was spontaneous, endothermic, and with a tendency toward disorder of the system at the adsorbent/adsorbate interface. The functionalization of MCM-41 increased the efficiency of adsorption of the PAHs by 44.5 and 32.0 % for benzo[k]fluoranthene and benzo[b]fluoranthene, respectively. Graphical Abstract Effect of contact time on adsorption of (a) B[k]F and (b) B[b]F by PABA-MCM-41. Conditions: 0.05 g of PABA-MCM-41, 5 mL of each PAH solution (concentration 200 lg L -1 ), temperature of 25°C, contact time of 300 min, and agitation at 150 rpm. 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 22.2 22.3 22.4 22.5 26.5 PAH (a) Benzo[k]fluoranthene (b) Benzo[b]fluoranthene Time (min) q e (µg g -1 )

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Section: Thermodynamic Parametersmentioning

confidence: 99%

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Costa

Garcia

Santos

et al. 2015

J Sol-Gel Sci Technol

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“…Ionic imprinted polymers (IIPs) are an important branch of MIPs and are similar to MIPs, but they recognize inorganic ions after imprinting, especially metal ions [3,15,16]. IIPs are often puzzled by the problem of low selectivity because many metal ions have the same charge, similar ionic radius and properties.…”

Section: Introductionmentioning

confidence: 99%

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Chen

et al. 2012

Journal of Hazardous Materials

132

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“…Moreover, this value is relatively higher than that in the previous report (Chen et al 2012). Because of the molecular imprinting, the specific cavities created in the MIP were in accordance with the template molecular in size, shape and coordination geometry (Liu et al 2011). Therefore, EICBs exhibited excellent selectivity for EGCG.…”

Section: Selectivity Of Eicbsmentioning

confidence: 62%

The effective and selective separation of (−)-epigallocatechin gallate by molecularly imprinted chitosan beads

Jing

Yin

2017

J Food Sci Technol

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The (2)-epigallocatechin gallate (EGCG) imprinted chitosan beads (EICBs) were fabricated for the effective and selective separation of EGCG. The EGCG molecules interacted with the amino groups of chitosan in the imprinting process, resulting in a highly porous structure of EICBs and more adsorption sites. Consequently, EICBs exhibited better adsorption performance than nonimprinted chitosan beads. The maximum adsorption capacity of EGCG onto EICBs reached 135.50 mg/g at 313 K. The imprinting factor of EICBs was 4.22, indicating that EICBs possess good recognition ability and selectivity for EGCG. After five cycles of reuse, only a slight decrease (7.77%) in the adsorption capacity was observed, demonstrating the satisfactory reusability of EICBs. Furthermore, the adsorption of EGCG onto EICBs is deduced to be the monolayer adsorption on an energetically homogeneous surface; the hydrogen bonding between EGCG and EICBs is the main driving force for the adsorption. Our studies suggest that EICBs have a great potential for the effective and selective separation of EGCG.

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Selective adsorption behavior of Pb(II) by mesoporous silica SBA-15-supported Pb(II)-imprinted polymer based on surface molecularly imprinting technique

Cited by 254 publications

References 51 publications

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Applications of inorganic–organic mesoporous materials constructed by self-assembly processes for removal of benzo[k]fluoranthene and benzo[b]fluoranthene

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

The effective and selective separation of (−)-epigallocatechin gallate by molecularly imprinted chitosan beads

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