Facile and Green Synthesis of Starfruit-Like ZIF-L, and Its Optimization Study

Abstract

Due to its excellent characteristics, zeolitic imidazole framework-L (ZIF-L) is widely used in various applications, such as drug delivery, wastewater treatments and energy storage. In the synthesis of ZIF-L, the molar ratio of ligand to metal, the reaction time and the temperature are essential parameters to produce excellent ZIF-L. In this work, ZIF-L was synthesized using a facile and green synthesis method. It was statistically investigated and optimized to obtain the best operating conditions. The optimization was carried out toward the amount of adsorbed crystal violet (CV) dye (q) as the response in the statistics. The optimal ZIF-L was obtained using a molar ratio of ligand to metal of 8.2220 for 97 min at 29 °C, where the q value of the CV adsorption onto this optimal ZIF-L reached 823.02 mg/g. The obtained ZIF-L was characterized using SEM, XRD, FTIR and TGA analyses to ensure its excellent characteristics.

Zinc-ion hybrid supercapacitor-batteries with a leaf-like ZIF-L/MgNiO2 micro-sphere composite and a Zn2+/sulfonated poly(ether ether ketone) gel

“…33,38 ZIF-L shows a cluster of peaks with the principal ones at 2q = 10.80°, 12.50°, 14.90°, 16.45°, 17.90°and 20.00°corresponding to the (200), ( 211), ( 220), (310), ( 222) and (114) planes of the orthorhombic crystal structure of ZIF-L. The pattern and the assignments match well with reported XRD patterns of ZIF-L. [39][40][41][42] The ZIF-L structure (shown in Fig. 2) affords multiple sites via the nitrogens and the Zn 2+ nodes and they serve as the binding sites for electrolyte ions during charge-discharge.…”

Synthesis of l-aspartic acid-based bimetallic hybrid nanoflowers to immobilize snailase for the production of rare ginsenoside compound K

“…2a, the XRD patterns of ZIF-ZnCo, ZIF-ZnCo-Sna, Asp@ZIF-ZnCo, and Asp@ZIF-ZnCo-Sna were almost the same as those of ZIF-L at 2y = 10.801, 12.541, 14.951, 16.491, and 17.861, corresponding to the (200), ( 211), ( 220), (310), and (222) planes, respectively, indicating the high crystallinity of the prepared composites. 22 Compared with ZIF-ZnCo, the characteristic diffraction peaks of the remaining composites were present in all crystallographic planes, and they did not change significantly in position. However, the intensities of several diffraction peaks in the (200), (211), (220), (310) and (222) planes were reduced, suggesting that the modification with Asp and the addition of Sna caused a partial change in the crystal structure but not in the main skeletal structure.…”

Statistically Optimum HKUST-1 Synthesized by Room Temperature Coordination Modulation Method for the Adsorption of Crystal Violet Dye

“…value as a response was predicted to reach 1005.22 mg/g on CV dye adsorption using the optimum HKUST-1, where the removal efficiency was equal to 92.31%. This result also exceeded the adsorption capacity of other MOFs towards CV, such as ZIF-L with 823.02 mg/g [53], Zn-FODC with 54.50 mg/g [54], and H2dtoaCu with 165.83 mg/g [55]. This optimization gave a satisfactory result as proven by the high composite desirability of 0.9678.…”

“…Moreover, RSM provided the linear, quadratic, and two-way interaction effects of the parameters on HKUST-1 which was assessed based on the statistical response. These effects were mathematically expressed by the following Equation (2) [53,65,66]:…”