Abstract:
Manganese oxide material shave been studied extensive lydue to their potential applications in a
wide variaty of areas. This leads to a searchfor novel methods, which are more efficient and
environmentally friently with desired properties to synthesize these materials. This paper reports
the novel synthesis of layered manganese oxide with birnessite-type structure using ceramic
method. The effect of synthetic parameters such as reductant types, mol rasio of precursor,
reaction temperatura and reaction time were studied to optimize the product. As-synthesized
products were characterized using X-ray diffraction to determine their structure, phases and
crystallinity, while SEM wasusedto determine their morphology. Other characterization includes
Gas Sorption Analyzer (GSA) forsurface area and FT-IR foracidity. There sultsindicated that
both reductants (Glucose and fructose) led to the formation of birnessite with different purityde
pending the condition of reaction. For glucose as reducing agent, the optimum conditions with
desired properties were as follows; KMnO4 :glukosa (3 : 1), calcination temperatura of 700°C for
7 hours. The birnessite obtained has the following properties such as flat appereance, particleize of
0.3-2 μm, and surface area of 2,6515 m2/gram. On the other hand, fructose produced the optimum
condition with mol rasio of KMnO4 :fruktosa (3 : 1), calcination temperature of 500°C and
reaction time of 5 hours with the following properties of birnessite: particlesize of 2,5 – 5 μm,
surface area of 2,5781 m2/gram, and acidicsites, Lewis site at 1460 cm-1 and Bronstedsite at
1640 cm-1.
