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Metal sulphide nanoparticles (NPs) have great potential applications in environmental remediation as they can oxidize peroxidase substrates like 3,3ʹ,5,5ʹ-tetramethylbenzidine (TMB) due to the production of hydroxide radicals (OH) via the Fenton reaction in presence of H2O2. Their good binding affinity toward heavy metal ions through their S-containing sites, causes the blockage of the active sites...
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