Researchers develop new metal-free organic catalyst which can produce hydrogen fuel by harvesting mechanical energy

In an interdisciplinary study researchers from the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) along with other institutions have developed a novel, cost-effective, metal-free porous organic catalyst for efficient Hydrogen fuel production by harvesting mechanical energy.

In an interdisciplinary study, researchers from the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), along with other institutions, have developed a novel, cost-effective, metal-free porous organic catalyst for efficient Hydrogen fuel production by harvesting mechanical energy.

According to the Department of Science and Technology, in order to reduce global warming and the related impact of fossil fuels, transition towards sustainable alternatives based on renewable energy becomes increasingly critical.

“Green hydrogen (H₂) fuel has emerged as a game-changing renewable and clean-burning energy source, which generates no direct carbon emissions and only water as a by-product when used in fuel cells,” it said.

Professor Tapas K. Maji  from the Chemistry and Physics of Materials Unit at JNCASR and his research team have developed a metal-free donor-acceptor based covalent-organic framework (COF) for piezocatalytic water splitting.

This study published in Advanced Functional Materials demonstrates a Covalent organic framework (COF) built from imide linkages between organic donor molecule tris(4-aminophenyl)amine (TAPA) and acceptor molecule pyromellitic dianhydride (PDA) acceptor exhibiting unique ferrielectric (FiE) ordering, which showed efficient piezocatalytic activity for water splitting to produce H2.

“This discovery breaks the traditional notion of solely employing heavy or transition metal-based ferroelectric (FE) materials as piezocatalysts for catalyzing water splitting reaction,” the department stated.

Using a simple donor molecule like TAPA and an acceptor molecule like PDA, Prof. Maji and his research team have built a COF system that has strong charge transfer properties, which creates dipoles (separation between positive and negative charges).