A review on zeolitic imidazolate frameworks use for crude oil spills cleanup

Abstract

Oil spills are a global concern by virtue of their distractive effects on the ecosystem. Many studies have examined the use of porous materials as sorbents for contaminants from different polluted waters. For example, hydrophobic metal organic frameworks, especially zeolitic imidazolate frameworks (ZIFs) with high porosity, have attracted lots of attention. ZIFs are a subclass of metal organic frameworks and display an excellent performance toward oil/water separation compared with other porous materials. Nevertheless, the performance of ZIFs toward oil spills cleanup has not been reviewed. Accordingly, this article overviews the different methods for ZIF preparation, their corresponding structure, and their various applications as sorbents and in particular, recent developments in cleaning up oil spills with meso and micro-porous ZIFs. The investigation of the literatures revealed that the effective parameters on the performance of porous ZIFs are specific surface area, pore diameters of ZIF, and the size of cavities due to interconnecting of ZIF particles. The ZIF-8 with a high surface area of 1408 m 2 /g and 1384.2 m 2 /g and adsorption capacity up to 3000 mg/g was studied more than the other ZIF structures. Models predications revealed the maximum adsorption capacity of 6633 mg/g for ZIF-8. Recently, investigations focused on carbonitride foam and melamine sponge as templates of ZIF powder. In comparison with synthesis methods, dip coating as a facial synthesis method was introduced for production and anchoring ZIF particles on the substrate. The recyclability of crude oil and the reusability of the ZIF sorbents are highlighted. Moreover, this article reviews recent developments of ZIFs synthesis, current challenges, and prospects for the use of ZIFs in oil/water separation. The findings of this study can help to better understand widespread applications of ZIFs, effective features of a sorbent, and methods to improve adsorption capacity. As cleaning up oil spills is known as an important issue, this is the first study on ZIFs in particular oil/water separation which provides a summary of researches in a simple form along with recent developments compared to published reviews.

Green Synthesis of Zeolitic Imidazolate Frameworks: A Review of Their Characterization and Industrial and Medical Applications

“…According to the research, specific surface area, the size of cavity due to the interconnected ZIF particles, and the pore diameters of ZIF have been considered as the efficient variables in the function of porous ZIFs. For this reason, researchers have considered ZIF-8, with an adsorption capacity of up to 3000 m 2 /g and higher surface areas of 1408 m 2 /g and 1384.2 m 2 /g, more than the other ZIF structures [103].…”

Bandgaps of noble and transition metal/ZIF-8 electro/catalysts: a computational study

“…[1][2][3][4][5] This eld has gained even more signicance with the development of an innovative type of porous material based on hybrid metal-organic frameworks (MOFs), which are well known as coordination polymers and hybrid organic-inorganic frameworks. [6][7][8] MOFs with zeolitic structures, such as zeolitic imidazolate frameworks (ZIFs), 9,10 include M-Im-M (M: transition metal cations, e.g., Co, Zn, and Im: imidazolate linker), which can be synthesized by a selfassembly method. 11 The different forms of ZIFs are topologically isomorphic with the conventional form of aluminosilicate zeolites.…”

The overviews of synthesis, characterization and application of ZIF-90

“…Mặt khác, ZIF-90 là vật liệu có khung được đánh giá là khá mềm dẻo và có thể hấp phụ các hợp chất hữu cơ có đường kính động học lớn hơn cả đường kính mao quản của nó, do đó ZIF-90 hứa hẹn sẽ có các ứng dụng đầy thú vị trong tương lai. Bên cạnh việc nghiên cứu tổng hợp, đặc trưng cấu trúc và tính chất, ZIF-90 bước đầu đã được nghiên cứu thử nghiệm ứng dụng chủ yếu trong các lĩnh vực hấp phụ, tách chất [7,8,23] và xúc tác [24,25].…”