Highly Porous MIL-100(Fe) for the Hydrogen Evolution Reaction (HER) in Acidic and Basic Media

Abstract

The present study reports the synthesis of a porous Fe-based MOF named MIL-100(Fe) by a modified hydrothermal method without the HF process. The synthesis gave a high surface area with the specific surface area calculated to be 2551 m 2 g –1 and a pore volume of 1.407 cm 3 g –1 with an average pore size of 1.103 nm. The synthesized electrocatalyst having a high surface area is demonstrated as an excellent electrocatalyst for the hydrogen evolution reaction investigated in both acidic and alkaline media. As desired, the electrochemical results showed low Tafel slopes (53.59 and 56.65 mV dec –1 ), high exchange current densities (76.44 and 72.75 mA cm –2 ), low overpotentials (148.29 and 150.57 mV), and long-term stability in both media, respectively. The high activity is ascribed to the large surface area of the synthesized Fe-based metal–organic framework with porous nature.

Mesoporous carbon‐supported CO 3 O 4 derived from Zif‐67 metal organic framework (MOF) for hydrogen evolution reaction in acidic and alkaline medium

“…Equation ( 1) was used to measure the exchange current density (j o ), overpotential (η), and coefficient of charge (α) as given below. 21 log j ¼ log j 0 À…”

Oxidation of 5‐Hydroxymethyl Furfural to 2,5‐Furan Dicarboxylic Acid Under Mild Aqueous Conditions Catalysed by MIL‐100(Fe) Metal‐Organic Framework

“…MIL‐100(Fe) was synthesised hydrothermally by modification of literature syntheses such that the use of HNO 3 and HF acids was not required. Whilst omission of the acids from the synthesis is known to reduce the BET surface area of the MOF, it also leads to a more scalable and green synthesis [26] . The successful synthesis of MIL‐100(Fe) was confirmed by a combination of powder XRD and TGA (Figures S1 and S2), and a BET surface area of 1158 m 2 /g was recorded.…”

Dissolution Enhancement and Controlled Release of Paclitaxel Drug via a Hybrid Nanocarrier Based on mPEG-PCL Amphiphilic Copolymer and Fe-BTC Porous Metal-Organic Framework

“…The MIL-100(Fe) and Fe-BTC structures consist of similar building blocks with the former material being crystalline [ 54 , 55 ]. The secondary building blocks (SBU) are Fe(III)( μ 3 -O) trimers that are linked by BTC forming a super tetrahedron structure.…”