Enhanced adsorption removal of methyl orange from water by porous bimetallic Ni/Co MOF composite: a systematic study of adsorption kinetics

Fabrication of Size-Controlled MOF-74-Derived Porous Nanospheres toward Efficient Water Treatment

“…As the intensification of human activities and the rapid development of modern industry have led to the contamination of water with various organic pollutants, the recycling of dyes from wastewater has gained significant attention. − In this work, we selected five organic dyes, including cationic-type MB, RhB, and GV, as well as anionic dyes such as MO and CR were employed as models in order to explore the adsorption behaviors of Mg–N–CX. In the adsorption experiment, 10 mg of Mg–N–CX samples were suspended in five dyes at room temperature.…”

Rational design of ZIF-derived nanocarbon with dual metal active sites via molten salt strategy for advancing oxygen electrocatalysis

“…First, the Fe-ZIF-67 precursor was prepared according to a previous report with minor modifications. 25 Typically, cobalt nitrate and ferric chloride (FeCl 3 ) were simultaneously dissolved in 25 ml water under ultrasonication, which was then added to 25 ml of DI water containing 2-methylimidazole under stirring. After hydrothermal reaction for 24 h at 100 °C, a purple product was obtained, which was subjected to rinsing with a large amount of methanol and dried at 65 °C under vacuum overnight.…”

Nanocomposite Fe-Co-V/Zeolite: Highly Efficient Composite for Removal of Methyl Orange Dye

“…In a study, the results showed that, the Ni@ZIF-67 nanocomposite adsorbed more dye in mild acidic condition (qe=24.24 mg/g, pH=6) as compared to acidic (qe=17.69 mg/g, pH=2) and basic medium (qe=15.74 mg/g, pH=10). The Langmuir, Freundlich adsorption isotherm models were applied and results showed that the Langmuir model proved to be best fitted [22]. In different studies with nanocomposites done to remove methyl orange alone or with other dyes, different results have been obtained; removal of 87% at pH equal to 5 and followed by the Langmuir model by means of cobalt hydroxide NPs [23,24], removal dye with NiO nanoflakes (pH=2, %removal=84.6 and Langmuir model) [25], removals using α-Fe 2 O 3 NPs (pH=2, %removal=90 and Langmuir model) [26], removals using Nickel hydroxide nanocatalyst (%removal=87 and Langmuir model) [27].…”