Some observations on the development of superior photocatalytic systems for application to water purification by the "adsorb and shuttle" or the interphase charge transfer mechanisms.

Molecules · 2014 · PMC6271694 · PMID 25432008

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quite significantno p-value reported

However, differences are quite significant when carbon is added.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.