Oxidizing Metal Oxides with Polynuclear Superhalogen: An ab Initio Study

Area of Science:

• Computational Chemistry
• Materials Science
• Environmental Chemistry

Background:

• Metal oxide nanoparticles can pose risks to human health and the environment.
• Understanding the interactions of metal oxides is crucial for developing mitigation strategies.

Purpose of the Study:

• To investigate the theoretical stability of systems formed between various metal oxides and the Mg3F7 superhalogen.
• To explore the potential of Mg3F7 as an agent to bind and stabilize metal oxides.

Main Methods:

• Ab initio calculations were employed to study metal oxide (MeOn) and superhalogen (Mg3F7) interactions.
• Analysis included structural deformation, charge flow, spin density distribution, and interaction energies.
• Vertical Ionization Potentials (VIPs) and Adiabatic Ionization Potentials (AIPs) were calculated at the CCSD(T)/6-311+G(d) level.

Main Results:

• Metal oxides (CoO, CuO, MgO, MnO2, NiO, TiO2, ZnO) form stable (MeOn)+ (Mg3F7)- salts.
• Mg3F7 acts as an oxidizing agent, effectively ionizing these metal oxides.
• Mg3F7 cannot ionize molecules with AIPs exceeding 12 eV, such as SiO2.

Conclusions:

• The study demonstrates the feasibility of forming stable salts between specific metal oxides and the Mg3F7 superhalogen.
• These findings suggest potential applications in preventing metal oxide nanoparticle aggregation.
• This research offers a theoretical basis for future environmental remediation strategies concerning metal oxides.