Adsorption from aqueous solution based on the synergism between hydrogen bonding and hydrophobic interactions

Li, Jia Zheng; Yao, Kang

doi:10.1002/app.21510

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…The absence of the also positively charged ⋮CO 3 Ca + groups should be attributed to the fact that the ⋮CaOH 2 + group, due to its hydrogen ion, contrary to the ⋮CO 3 Ca + group, may form hydrogen bonds with the hydroxyl groups of the adsorbed HEDP species. Similar interactions with surface species, which demonstrate the significance of hydrogen bonding in adsorption, have been reported in the literature. , This is in agreement with the assumption made during the development of the proposed model that the adsorbed HEDP species are specifically adsorbed, located at the IHP. That is, in addition to the electrostatic, the chemical interactions between adsorbent and adsorbate play an important role in the whole adsorption process.…”

Section: Resultssupporting

confidence: 91%

The Interaction of Diphosphonates with Calcitic Surfaces: Understanding the Inhibition Activity in Marble Dissolution

2006

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The rates of dissolution of calcitic Carrara marble have been reported to be significantly reduced in alkaline pH (pH 8.25) at 25 degrees C in the presence of (1-hydroxyethylidene)-1,1 diphosphonic acid (HEDP). The adsorption takes place at the calcite/water interface at the double layer through the interaction of charged surface species with the charged solution species of the adsorbate. The present work focused on obtaining a better understanding of the interaction of the calcite surface with HEDP. Calculations were performed according to the triple layer model, assuming the formation of surface complexes between the charged surface species of calcite and the species of HEDP dominant at pH 8.25. According to the model, the adsorbed species are located at the inner Helmholtz plane of the electrical double layer. Strong lateral interactions between the adsorbed species were suggested and were corroborated from the calculation of the respective energy, which was equal to 69 kJ mol(-1). The adsorption isotherm was consistent with the proposed model at low surface coverage values, while discrepancies between the values experimentally measured and the predicted were found at higher adsorbate concentrations. The deviations from the predicted values were attributed to the fact that HEDP adsorption on calcite resulted in the formation of multiple layers. The model explained adequately the changes in the zeta-potential values of calcite in the presence of HEDP in the solution which resulted in charge reversal upon adsorption.

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Section: Resultssupporting

confidence: 91%

The Interaction of Diphosphonates with Calcitic Surfaces: Understanding the Inhibition Activity in Marble Dissolution

2006

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“…28 Together with the uniform modification of PDA layer, the adsorbed amines are deemed to be evenly coated on the DPAN surface in multilayer stacking. This nanoscale stacking has been proven to be a spontaneous and fast process, 23,25 which is essential for manufacturing an integrated and ultrathin film on the substrate. This can be confirmed by AFM images in Figure 1g−i, where amineadsorbed DPAN shows a smooth and defect-free surface, different from that of PAN featuring discontinuous amine stacking with large (∼20 nm deep) holes.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, adsorption-assisted technique has attracted research interests in preparing nanostructured devices because of the particular advantages of fast molecule recognition, various choices, and robust bonding. − It can help to capture and enrich target molecules to form uniform arrays on the support surface, which is essential for defect-free films. Furthermore, the adsorbed arrays usually comprise monolayered to multilayered molecules, holding great promise for ultrathin films.…”

Section: Introductionmentioning

confidence: 99%

Adsorption-Assisted Interfacial Polymerization toward Ultrathin Active Layers for Ultrafast Organic Permeation

Cui

et al. 2018

ACS Appl. Mater. Interfaces

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Thin-film composite (TFC) membranes show exceptional permeation properties of key importance for many separations. However, their design and development need ultrathin and defect-free nanofilms as the active layer to alleviate the bottleneck of permeation-rejection trade-off. Here, a 25 nm thick film is fabricated on a porous support by introducing polydopamine (PDA) as an adsorption layer, imparting a unique adsorption-assisted interfacial polymerization (IP) strategy. The PDA layer efficiently captures and enriches amine monomers even from ultradilute solution toward uniform stacking on the support, thus generating ultrathin and defect-free films after polymerization. This is superior to the defective one from conventional IP. Such an active layer features ultrafast permeation for organics, favorable solute rejection, and excellent operation stability. Particularly, the acetone permeance of this new TFC membrane reaches 96.3 L m h bar, which exceeds that from conventional IP by more than 10 times, ranking among one of the highest performances reported to date. More significantly, the pernicious permeation-rejection trade-off of the TFC membrane is thus alleviated. Besides, this strategy is facile, versatile, and easy to scale-up, giving controllable physical and chemical structures to the active layer. This study may pave a way to well-design highly efficient film materials for various transport and separation applications.

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“…To remove these compounds, many disposal processes are developed and adsorption is proven to be an effective method 5–7. There are many absorbents in use.…”

Section: Introductionmentioning

confidence: 99%

Collagen antibody–induced arthritis evokes persistent pain with spinal glial involvement and transient prostaglandin dependency

Baş¹,

Su²,

Sándor³

et al. 2012

Arthritis & Rheumatism

132

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Objective. Pain is one of the most debilitating symptoms reported by rheumatoid arthritis (RA) patients. While the collagen antibody-induced arthritis (CAIA) model is used for studying the effector phase of RA pathologic progression, it has not been evaluated as a model for studies of pain. Thus, this study was undertaken to examine pain-like behavior induced by anticollagen antibodies and to assess the effect of currently prescribed analgesics for RA. In addition, the involvement of spinal glia in antibody-induced pain was explored.Methods. CAIA was induced in mice by intravenous injection of a collagen antibody cocktail, followed by intraperitoneal injection of lipopolysaccharide. Disease severity was assessed by visual and histologic examination. Pain-like behavior and the antinociceptive effect of diclofenac, buprenorphine, gabapentin, pentoxifylline, and JNK-interacting protein 1 were examined in mechanical stimulation experiments. Spinal astrocyte and microglia reactivity were investigated by real-time polymerase chain reaction and immunohistochemistry.Results. Following the induction of CAIA, mice developed transient joint inflammation. In contrast, pain-like behavior was observed prior to, and outlasted, the visual signs of arthritis. Whereas gabapentin and buprenorphine attenuated mechanical hypersensitivity during both the inflammatory and postinflammatory phases of arthritis, diclofenac was antinociceptive only during the inflammatory phase. Spinal astrocytes and microglia displayed time-dependent signs of activation, and inhibition of glial activity reversed CAIA-induced mechanical hypersensitivity.Conclusion. CAIA represents a multifaceted model for studies exploring the mechanisms of pain induced by inflammation in the articular joint. Our findings of a time-dependent prostaglandin and spinal glial contribution to antibody-induced pain highlight the importance of using appropriate disease models to assess joint-related pain.

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Adsorption from aqueous solution based on the synergism between hydrogen bonding and hydrophobic interactions

Cited by 8 publications

References 12 publications

The Interaction of Diphosphonates with Calcitic Surfaces: Understanding the Inhibition Activity in Marble Dissolution

The Interaction of Diphosphonates with Calcitic Surfaces: Understanding the Inhibition Activity in Marble Dissolution

Adsorption-Assisted Interfacial Polymerization toward Ultrathin Active Layers for Ultrafast Organic Permeation

Collagen antibody–induced arthritis evokes persistent pain with spinal glial involvement and transient prostaglandin dependency

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