Paul Kinyanjui Kimani, Edwin Shigwenya Madivoli, Ernest Gachui Maina, Lee Wah Lim, Chika Takai
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引用次数: 0
Abstract
Metal–organic frameworks (MOFs) are promising for environmental remediation, but their nanosize limits practical application. Here, we used a green and scalable technique to grow copper benzene-1,4-dicarboxylate (Cu-BDC) MOFs on carboxymethyl cellulose (CMC) macro-sized beads. We dropped a solution of 2% w/v CMC containing aniline and 1,4-benzenedicarboxylic acid into an aqueous anhydrous copper acetate solution. The resulting 1.32 ± 0.11 mm-sized beads contained sheet-like folds patterned with 483.78 ± 7.29 nm-sized rice-like Cu-BDC crystals. The presence of aniline was important in the formation of the Cu-BDC complex, providing a [Cu–aniline] complex as a seeding template. We investigated the effect of aniline concentration, temperature, and time using a 10-experiment full factorial screening design. Increasing the aniline concentration enhanced bead crystallinity and size. Longer time and higher temperature increased crystallinity but reduced bead size due to inward constriction from surface reactions. Our green method yields Cu-BDC beads, offering ease of handling and separation, making them ideal for environmental remediation.
期刊介绍:
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.