Transition metal dichalcogenides (TMDCs) are a class of layered compounds with the formula MX2. Recent decades witnessed tremendous attention paid to TMDCs. Nevertheless, MX2 are rarely used as metal precursors for synthesis of inorganic compounds. Owing to the decent M-X bonding strength as well as the existence of interlayer galleries, MX2 is vulnerable to nucleophilic attack and therefore may serve as monodispersed metal ion source under hydrothermal/solvothermal conditions. Ti-based metal-organic frameworks (Ti-MOFs) synthesis may be a representative example demonstrating the capacity of MX2 as competent metal sources. Taking NH2-MIL-125(Ti), the most widely studied Ti-MOFs as an example, herein we first demonstrated that the layered structure of solid TiS2 precursors significantly facilitated the nucleophilic attack of NH2-BDC ligands under solvothermal conditions and therefore promoted facile synthesis of high quality NH2-MIL-125(Ti). In addition, phase evolution mechanism (Figure 1), CO2 adsorption capacity and photocatalytic degradation performance of prepared Ti-MOFs were investigated (Figure 2). Our finding demonstrated that the use of TMDCs as precursors represented a new and viable concept for facile synthesis of MOFs.

Two-dimensional transition metal dichalcogenides as metal source of metal-organic frameworks

256th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.