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One Precursor, Two Different Outcomes: SnO-Graphite Composite and Anion-Doped SnO₂ with Ester Surface Functionality.

Neetu Yadav¹, Sreejith Olakkil Veedu², Murugan Ramaswamy²

¹Materials Chemistry Group, Department of Chemistry, University of Delhi, Delhi 110007, India.

Langmuir : the ACS Journal of Surfaces and Colloids

|April 10, 2024

Summary

This summary is machine-generated.

A novel binuclear tin complex yields tin(II) oxide-graphite composites for lithium-ion batteries and carbon, nitrogen-codoped tin(IV) oxide nanocrystals for dye adsorption.

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Area of Science:

Materials Science
Nanotechnology
Electrochemistry

Background:

Tin oxides (SnO2 and SnO) are technologically important nanomaterials.
Synthesis, surface functionalization, and composite formation are key research areas.

Purpose of the Study:

To synthesize SnO-graphite composites and C, N-codoped SnO2 nanocrystals.
To evaluate the SnO-graphite composite as an anode material for lithium-ion batteries.
To investigate the dye adsorption capabilities of functionalized SnO2.

Main Methods:

Thermal and solvothermal dissociation of a binuclear Sn2-EDTA complex.
Characterization of synthesized materials using various techniques.
Electrochemical evaluation for lithium-ion battery performance.
Adsorption studies using azo dyes (Congo red, Eriochrome black T).

Main Results:

SnO-graphite composite (12 wt% graphitic carbon) with tetragonal SnO was produced.
C, N-codoped SnO2 nanocrystals exhibited a reduced optical band gap (2.9 eV).
Functionalized SnO2 demonstrated rapid adsorption of anionic azo dyes via chemisorption.

Conclusions:

The Sn2-EDTA complex is a versatile precursor for advanced tin-based nanomaterials.
The SnO-graphite composite shows potential for lithium-ion battery anodes.
C, N-codoped SnO2 is effective for removing azo dyes from aqueous solutions.