PET-derived bis(2-hydroxyethyl) terephthalate as a new linker source for solvent-free and hydrothermal synthesis of BDC-based MOFs
Journal
Materials Today Nano
Journal Volume
25
Date Issued
2024-03-01
Author(s)
Krisbiantoro, Philip Anggo
Kuo, Tzu Jung
Chang, Yu Chia
Liao, Weisheng
Sun, Jih Peng
Yang, Chun Yen
Kamiya, Yuichi
Shieh, Fa Kuen
Abstract
To date, the high cost of organic linkers and the energy-consuming synthesis processes remain two of the main challenges for the commercialization of metal-organic frameworks (MOFs). Herein, we demonstrate that polyethylene terephthalate (PET)-derived bis(2-hydroxyethyl) terephthalate (BHET) is a new linker source that enables the facile solvent-free and hydrothermal synthesis of BDC-based MOFs. Using BHET as a linker source, UiO-66(Zr) was rapidly synthesized via a solvent-free “grind and bake” technique, while Ca-BDC and Ba-BDC were easily obtained by using hydrothermal synthesis. We found that the hydrolysis of BHET to terephthalate anion (BDC2−) over proton produced from the hydrolysis/clustering of Zr precursor and hydroxyl anion produced from the dissolution of M(OH)2 (M = Ca or Ba) was the key to the crystal growth of solvent-free synthesized UiO-66(Zr) and hydrothermally synthesized M-BDC (M = Ca or Ba), respectively. While the as-synthesized UiO-66(Zr) was highly active for the esterification of lactic acid (LA) with ethanol (EtOH), Ca-BDC and Ba-BDC exhibited remarkable electrochemical performance for lithium storage. Our strategy provides a major step towards realizing the idea of a more facile, green, and low-cost synthesis of PET-derived MOFs compared to prior arts applicable for catalysis and energy applications.
Subjects
Ba-BDC | Bis(2-hydroxyethyl) terephthalate | Ca-BDC | Esterification | Hydrothermal | Lithium-ion batteries | Metal-organic framework | Solvent-free | UiO-66(Zr)
Type
journal article