Quick question - manganese dioxide cofactor or catalyst?

[forchina]

Is manganese dioxide a cofactor or catalyst in the breakdown of hydrogen peroxide into water and oxygen? So does catalase need it for the enzyme to work or does it just help the enzyme work quicker?
Thank you

[alphamale]

As far as i know, Manganese Oxide is a an inorganic catalyst. (I got this from Douchy's Biology) 

[slothpomba]

"Enzymes" are proteins that catalyse reactions.

The question is leaving parts out.

H2O2 (Hydrogen perioxide) would break down just naturally if you left it on a bench.

So, we have to establish if we have an enzyme working here or not...the question doesn't seem to mention it...

If there is an enzyme (Remembering enzymes are technically catalysts) involved, then its doubtful we'd need two catalysts. Also, Cofactors are something that "help" the enzyme do its job.

If there is no enzyme, maganese oxide could be catalysing the reaction (a little like the catalytic converter in a car or the other examples you might of heard in chem).