Catalytic signal amplification was used for the colorimetric detection of CN− in aqueous media by using the enzyme catalase in tandem with mesoporous silica nanoparticle based synthetic HRP enzyme mimic Fe-MSNs. Signal amplification up to a maximum of eight fold was observed for the reporter “oxidized TMB” with respect to the added CN− ion. © 2013 The Royal Society of Chemistry.

Basab Bijayi Dhar

Chemistry

(SoNS) School of Natural Sciences

C. Panda

B. Malvi

Y. Bhattacharjee

S.S. Gupta

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Shiv Nadar University

Chemical Communications

Catalytic signal amplification using [FeIII(biuret-amide)]-mesoporous silica nanoparticles: Visual cyanide detection