Convergent and Divergent Paired Electrodeposition of Metal-Organic Framework Thin Films

Saber Alizadeh,Davood Nematollahi

doi:10.1038/s41598-019-50390-y

Saber Alizadeh, Davood Nematollahi

Open Access

https://doi.org/10.1038/s41598-019-50390-y

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Journal: Scientific Reports	Publication Date: Oct 4, 2019
Citations: 35	License type: open-access

Affiliation: Bu-Ali Sina University

Abstract

Employing the environmentally friendly methods for synthesis of the metal-organic frameworks (MOFs) is an urgent need and sustainable development in the synthesis of these compounds is essential. In this way, ignoring the counter electrode reaction is a potentially negative point from green chemistry standpoint which increases some issues like energy consumption and reaction time. We wish to introduce the “paired electrodeposition” (PED) technique as a new method for the simultaneous synthesis and deposition of the MOF thin films (MOFTFs). This protocol implements the uniform pattern of two MOFTF modified substrates by “convergent (CPED: Zna/Znc-MOFTFs) and divergent (DPED: Cua/Znc-MOFTFs) paired electrodeposition” via a one-step synthesis. With the rule of thumb, enhanced energy efficiency and atom economy, increasing electrochemical yield, time-saving along with a variety of products are advantages of this technique. Besides, the “Electrode Modification Efficiency” has introduced for the evaluation of functionality and modification efficiency of electrochemical heterogeneous systems, especially MOFTFs. To investigate this concept, we synthesized Zn3(BTC)2 and Cu3(BTC)2 as MOF models under constant current electrolysis in water and at room temperature. This work can make a breakthrough in the green synthesis of metal-organic frameworks.

Highlights

Www.nature.com/scientificreports electrochemistry will have significant advantages such as synchronous modification of anode and cathode, targeted electron transfer, enhanced overall energy efficiency, improved atom economy, combined electrochemical yield, time- and cost- saving, over traditional ones
In Convergent paired electrodeposition (CPED) mode, anodic and cathodic reactions are modification of electrodes by Zna/Znc-MOF thin films (MOFTFs) based on pertinent metal and salt as a cation source in the undivided cell, respectively
In DPED mode, anodic reaction is modification of electrode by the Cua-MOFTF based on corrosion of the Cu electrode surface as a cation source and cathodic reaction is the fabrication of Znc-MOFTF modified electrode based on dependent salt as a cation source in the divided cell

Summary

Introduction

Www.nature.com/scientificreports electrochemistry will have significant advantages such as synchronous modification of anode and cathode, targeted electron transfer, enhanced overall energy efficiency, improved atom economy, combined electrochemical yield, time- and cost- saving, over traditional ones. In CPED mode, anodic and cathodic reactions are modification of electrodes by Zna/Znc-MOFTF based on pertinent metal and salt as a cation source in the undivided cell, respectively.

Results

Conclusion