The nature of iridium(IV) iodate

Rose, Dyson; Lever, F. M.; Powell, A. R.; Wilkinson, Geoffrey

doi:10.1039/j19690001690

Cited by 4 publications

(2 citation statements)

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“…Similarly, when the pH of the solution is increased, the rate of catalyst binding decreases, demonstrating that the catalyst binds faster when retaining aqua ligands rather than more strongly coordinating hydroxo ligands, consistent with a water displacement mechanism. These sites are also rapidly exchanged with the anion present in solution, iodate, which can also act as a ligand 44 . Consistently, we found that an increase in iodate concentration inhibits surface binding; however, a low concentration of iodate is required for heterogenization.…”

Section: Resultsmentioning

confidence: 99%

A molecular catalyst for water oxidation that binds to metal oxide surfaces

et al. 2015

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Molecular catalysts are known for their high activity and tunability, but their solubility and limited stability often restrict their use in practical applications. Here we describe how a molecular iridium catalyst for water oxidation directly and robustly binds to oxide surfaces without the need for any external stimulus or additional linking groups. On conductive electrode surfaces, this heterogenized molecular catalyst oxidizes water with low overpotential, high turnover frequency and minimal degradation. Spectroscopic and electrochemical studies show that it does not decompose into iridium oxide, thus preserving its molecular identity, and that it is capable of sustaining high activity towards water oxidation with stability comparable to state-of-the-art bulk metal oxide catalysts.

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Section: Resultsmentioning

confidence: 99%

A molecular catalyst for water oxidation that binds to metal oxide surfaces

et al. 2015

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“…Iridium iodate has been shown previously to be catalytically active for water oxidation with sodium periodate. 21 The steric bulk of the butylmalonic acid may prevent aggregation of these nanoclusters, allowing them to reform into discrete trimers after the iodate is consumed.…”

Section: Communicationmentioning

confidence: 99%