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In this study, the ultra-thin CoAl layered double hydroxide (LDH) nanosheets with Cl intercalation were prepared by a hydrothermal method following acid-salt treatment. The morphology, structure and composition information of CoAl LDHs were identified by a variety of characterization methods including SEM, XRD, XPS, FT-IR, and BET. The effects of initial adsorbent concentration, pH, competitive anions, and temperature were also measured. The fitted adsorption curves are matched well with Langmuir isotherm model and pseudo-second-order kinetic model, suggesting that the removal of methyl orange (MO) is governed by monolayer heterogeneous adsorption and chemical adsorption, respectively. The measurements of adsorption capacity at various temperatures revealed that the adsorption process is spontaneous. Co-existing anions have different negative effects on the adsorption capacity. The CoAl-Cl LDH adsorbent shows the maximum experimental and theoretical adsorption capacity of 801.08 and 827.50 mg g (pH = 7 and T = 293 K), respectively. An adsorption mechanism called "ion exchange and expansion-extrusion" is proposed to explain the change of interlayer spacing. These results indicate that a novel avenue for designing LDH-type adsorbent has been proposed with excellent adsorption capacity for anionic dyes like MO.
This article was published in the following journal.
Name: Journal of colloid and interface science
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Rationale/hypothesis: Atopic dermatitis (AD) is an inflammatory skin disease, occurring most frequently in children. Currently, topically applied corticosteroids are used as a standard ant...
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This trial is a randomized, parallel-group, double-blind, controlled clinical trial to evaluate the effect of hyaluronic acid (HA) on dry eye disease.
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To perform a randomized, double-blind clinical study on the effects of an increased salt intake on metabolic, cardiovascular and immunological parameters and the gut microbiota
A group of conditions due to overexposure to or overexertion in excess environmental temperature. It includes heat cramps, which are non-emergent and treated by salt replacement; HEAT EXHAUSTION, which is more serious, treated with fluid and salt replacement; and HEAT STROKE, a condition most commonly affecting extremes of age, especially the elderly, accompanied by convulsions, delusions, or coma and treated with cooling the body and replacement of fluids and salts. (From Segen, Dictionary of Modern Medicine, 1992)
A double-layered fold of peritoneum that attaches the STOMACH to other organs in the ABDOMINAL CAVITY.
A bile salt formed in the liver from lithocholic acid conjugation with taurine, usually as the sodium salt. It solubilizes fats for absorption and is itself absorbed. It is a cholagogue and choleretic.
The hydroxy salt of ammonium ion. It is formed when AMMONIA reacts with water molecules in solution.
The double-layered skin fold that covers the GLANS PENIS, the head of the penis.