Facile synthesis of novel flowerlike magnetic mesoporous carbon for efficient chlorophenols removal

Abstract

a b s t r a c tWe present here a novel, low cost and environmental-friendly synthetic strategy for fabricating flowerlike magnetic mesoporous carbon (MMC) microspheres by using silica coated ), as well as good chemical inertness and mechanical stability. The MMC spheres were used to adsorb 2,4,6-trichlorophenol (TCP) from simulated water samples. Experiment results suggest that the adsorption was favorable at acidic pH and increased with the rise of initial TCP concentration and temperature. Kinetic parameters were proved to follow the pseudo-second-order kinetics model and the equilibrium data was more favorable for Freundlich isotherm. The equilibrium absorption capacity was 210 mg g À1 at initial TCP concentration of 20 mg L À1and increased to 587 mg g À1 when the initial TCP concentration was up to 100 mg L À1, which was much higher than those of other carbon-based adsorbents reported in literature. To the best of our knowledge, this is the first report on the synthesis of flowerlike MMC material by using LDH as template and its application as adsorbent to remove TCP.

Adsorption of Cadmium Ions from an Aqueous Solution on a Highly Stable Dopamine-Modified Magnetic Nano-Adsorbent

“…1a—(b)) were consistent with the standard face-centered cubic (fcc) Fe 3 O 4 (JCPDS card number 19-629) (Fig. 1a—(a)) [36], and impurity peaks were not observed. Relatively strong diffraction peaks were observed at 2 θ values of 18°, 30°, 35.4°, 43°, 53°, 56°, 62°, and 73°, corresponding to the standard diffraction peaks of the (111), (220), (311), (400), (422), (511), (440), and (533) crystallographic planes of Fe 3 O 4 , respectively, indicating that the synthesized magnetic nanoparticles are Fe 3 O 4 and not other ferrites.…”

Highly Efficient Magnetic Nitrogen-Doped Porous Carbon Prepared by One-Step Carbonization Strategy for Hg2+ Removal from Water

“…Significant efforts have been devoted for the preparation of MNPCs, including template-based synthesis, hydrothermal/solvothermal method, chemical vapor deposition, sol–gel process, and pyrolysis procedure . Unfortunately, there are still many considerable challenges and issues for these traditional methods, such as the difficulty in tailoring the surface properties of composites under exact control, magnetic transition metal leaching under acidic aqueous solutions, and time-consuming and multistep troublesome preparation procedures along with high cost (e.g., repeated impregnation with metal precursors and carbon, as well as hard templates removal). ,− Therefore, developing a cheap and convenient way to fabricate MNPCs is urgently needed to meet demands for removal of heavy metal ions from polluted water.…”

Adsolubilization of 2,4,6-trichlorophenol from aqueous solution by surfactant intercalated ZnAl layered double hydroxides

“…Therefore, it is highly important to remove 2,4,6-TCP compound from aqueous solution. Currently, a number of methods have been developed to eliminate 2,4,6-TCP from wastewater [11][12][13][14][15]. However, these methods and materials usually involve high cost, complex process, and even may lead to secondary pollution during degradation process.…”