sc400129n_si_001.pdf (667.07 kB)
Low-Temperature Green Synthesis of Multivalent Manganese Oxide Nanowires
journal contribution
posted on 2016-02-18, 23:30 authored by Harish Veeramani, Deborah Aruguete, Niven Monsegue, Mitsuhiro Murayama, Urs Dippon, Andreas Kappler, Michael
F. HochellaManganese oxide nanomaterials hold
promise for sustainable nanotechnologies
given their utility for a variety of applications, the Earth’s
abundance of manganese, and their low toxicity relative to other nanomaterials.
However green scalable synthesis methods for such nanomaterials are
needed. We report here a green room-temperature synthesis of polycrystalline
Mn3O4 nanowires. In this procedure, aqueous
Mn(II) is oxidized under circumneutral conditions by atmospheric oxygen
in the presence of nanocrystalline iron oxide (α-Fe2O3), an inexpensive catalyst, and a classic biochemical
Good’s buffer, PIPES (piperazine-N,NI-bis(2-ethanesulfonic
acid). The synthesis method is novel due to its simplicity, minimal
energy input and waste output, and potential scalability. The Mn3O4 nanowires have been characterized with a suite
of electron microscopy techniques.