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

Ravi Nivetha; Kannan Gothandapani; Vimala Raghavan; George Jacob; Raja Sellappan; Preetam Bhardwaj; Sudhagar Pitchaimuthu; Arunachala Nadar Mada Kannan; Soon Kwan Jeong; Andrews Nirmala Grace

doi:10.1021/acsomega.0c02171

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

Ravi Nivetha, Kannan Gothandapani, Vimala Raghavan, George Jacob, Raja Sellappan, Preetam Bhardwaj, Sudhagar Pitchaimuthu, Arunachala Nadar Mada Kannan, Soon Kwan Jeong, Andrews Nirmala Grace^*

^*Corresponding author for this work

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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 m2 g-1 and a pore volume of 1.407 cm3 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.

Original language	English
Pages (from-to)	18941-18949
Number of pages	9
Journal	ACS Omega
Volume	5
Issue number	30
Early online date	21 Jul 2020
DOIs	https://doi.org/10.1021/acsomega.0c02171
Publication status	Published - 4 Aug 2020

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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title = "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 m2 g-1 and a pore volume of 1.407 cm3 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. ",

author = "Ravi Nivetha and Kannan Gothandapani and Vimala Raghavan and George Jacob and Raja Sellappan and Preetam Bhardwaj and Sudhagar Pitchaimuthu and Kannan, {Arunachala Nadar Mada} and Jeong, {Soon Kwan} and Grace, {Andrews Nirmala}",

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year = "2020",

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doi = "10.1021/acsomega.0c02171",

language = "English",

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T1 - Highly Porous MIL-100(Fe) for the Hydrogen Evolution Reaction (HER) in Acidic and Basic Media

AU - Nivetha, Ravi

AU - Gothandapani, Kannan

AU - Raghavan, Vimala

AU - Jacob, George

AU - Sellappan, Raja

AU - Bhardwaj, Preetam

AU - Pitchaimuthu, Sudhagar

AU - Kannan, Arunachala Nadar Mada

AU - Jeong, Soon Kwan

AU - Grace, Andrews Nirmala

PY - 2020/8/4

Y1 - 2020/8/4

N2 - 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 m2 g-1 and a pore volume of 1.407 cm3 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.

AB - 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 m2 g-1 and a pore volume of 1.407 cm3 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.

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VL - 5

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JO - ACS Omega

JF - ACS Omega

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

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