In Situ Synthesis of MIL-100(Fe) at the Surface of Fe3O4@AC as Highly Efficient Dye Adsorbing Nanocomposite

Abstract

A new magnetic nanocomposite called MIL-100(Fe) @Fe3O4@AC was synthesized by the hydrothermal method as a stable adsorbent for the removal of Rhodamine B (RhB) dye from aqueous medium. In this work, in order to increase the carbon uptake capacity, magnetic carbon was first synthesized and then the Fe3O4 was used as the iron (III) supplier to synthesize MIL-100(Fe). The size of these nanocomposite is about 30–50 nm. Compared with activated charcoal (AC) and magnetic activated charcoal (Fe3O4@AC) nanoparticles, the surface area of MIL-100(Fe) @Fe3O4@AC were eminently increased while the magnetic property of this adsorbent was decreased. The surface area of AC, Fe3O4@AC, and MIL-100(Fe) @Fe3O4@AC was 121, 351, and 620 m2/g, respectively. The magnetic and thermal property, chemical structure, and morphology of the MIL-100(Fe) @Fe3O4@AC were considered by vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunner-Emmet-Teller (BET), and transmission electron microscopy (TEM) analyses. The relatively high adsorption capacity was obtained at about 769.23 mg/g compared to other adsorbents to eliminate RhB dye from the aqueous solution within 40 min. Studies of adsorption kinetics and isotherms showed that RhB adsorption conformed the Langmuir isotherm model and the pseudo second-order kinetic model. Thermodynamic amounts depicted that the RhB adsorption was spontaneous and exothermic process. In addition, the obtained nanocomposite exhibited good reusability after several cycles. All experimental results showed that MIL-100(Fe) @Fe3O4@AC could be a prospective sorbent for the treatment of dye wastewater.

Factors Influencing of Malaysian Muslim Women Consumers in Choosing Non-Certified Halal Foreign Brand Makeup Products in Mid Valley Megamall Kuala Lumpur

“…It was supposed to cover the minor imperfections on one's face and in some cases, will stay longer on the face so that the re-powdering is unnecessary. Moreover, it will also enhance the skin appearance by reducing the visibility of discoloration as well (Elmarzugi et al, 2013;Hamedi et al, 2019).…”

“…They applied rouges on both cheeks using a specific makeup brush or a puff. The usage of a blusher will make one look younger and pretty (Hamedi et al, 2019).…”

“…Eyebrow pencils are used to darken the eyebrows, typically in black. The proportion of waxes in the eyebrow pencils gave the hard effect which makes it easier to be constructed into a perfect point of eyebrows (Hamedi et al, 2019).…”

“…Usually, eye shadow is made in a form of powder such as compressed or loose powders, but it could also in certain cases made from liquid, pencil cream, emulsions, sticks and mousse. (Hamedi et al, 2019).…”

“…It will add colour and texture to the lips and in some cases, it will even make the lips become matte, satin, and lustre. According to (Hamedi et al, 2019) lipstick helps in brightening the lip's colour and will reduce irritation to the lips.…”