TY - JOUR

T1 - A comparison study on Raman scattering properties of alpha- and beta-MnO2

A1 - Gao,Tao

A1 - Fjellväg,Helmer

A1 - Norby,Poul

AU - Gao,Tao

AU - Fjellväg,Helmer

AU - Norby,Poul

PB - Elsevier BV

PY - 2009

Y1 - 2009

N2 - In this comment to a recent paper [Anal. Chim. Acta 585 (2007) 241–245], we report a comparison study on Mn oxide-related compounds with different crystallographic forms, which distinguish between β-MnO2 and α-MnO2 type materials via Raman scattering (RS) spectroscopy. The tetragonal rutile-type β-MnO2 is characterized by a RS band at 667 cm−1 of symmetry A1g, whereas the α-MnO2 type materials feature two main RS contributions at about 574 and 634 cm−1, belonging to Ag spectroscopic species of a tetragonal hollandite-type framework. These data represent a clear signature for identifying β-MnO2 and α-MnO2 type materials via RS spectroscopy.

AB - In this comment to a recent paper [Anal. Chim. Acta 585 (2007) 241–245], we report a comparison study on Mn oxide-related compounds with different crystallographic forms, which distinguish between β-MnO2 and α-MnO2 type materials via Raman scattering (RS) spectroscopy. The tetragonal rutile-type β-MnO2 is characterized by a RS band at 667 cm−1 of symmetry A1g, whereas the α-MnO2 type materials feature two main RS contributions at about 574 and 634 cm−1, belonging to Ag spectroscopic species of a tetragonal hollandite-type framework. These data represent a clear signature for identifying β-MnO2 and α-MnO2 type materials via RS spectroscopy.

KW - Materials characterization and modelling

KW - Materials research

KW - Materialeforskning

KW - Materialekarakterisering og materialemodellering

U2 - 10.1016/j.aca.2009.06.059

DO - 10.1016/j.aca.2009.06.059

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

SN - 0003-2670

IS - 2

VL - 648

SP - 235

EP - 239

ER -