# Impact of Fluorine in Manganese Citrate Synthesis on Structure and Value-Added Decomposition Products

## TL;DR

Adding fluoride during the synthesis of manganese citrate creates new structures that can be used to make materials with potential applications in catalysis and energy storage.

## Contribution

The study shows that fluoride ions lead to the formation of new layered manganese citrate structures and their derived functional materials.

## Key findings

- HF or NaF leads to the formation of new layered manganese citrates with determined crystal structures.
- Single-phase citrates with and without fluoride produce mesoporous MnxOy and hierarchically porous MnxOy@C materials.
- The resulting materials are promising for catalytic, sorption, and electrochemical applications.

## Abstract

Synthesis of manganese citrates was carried out in the presence and absence of fluoride ions. The presence of HF or NaF led to the formation of new layered manganese citrates whose crystal structures were determined by single-crystal X-ray diffraction. The prepared single-phase citrates with and without fluoride ions were then used as precursors for the preparation of mesoporous MnxOy and hierarchically porous MnxOy@C phases, which could be of interest for catalytic, sorption, and electrochemical applications.