Electrochemical sensor and catalyst on Cu3(BTC)2 coating electrode from Cu(OH)2 films
Metal-organic framework (MOF) coatings were prepared on gold electrodes through the conversion from Cu(OH)2 nanobelts to Cu3(BTC)2 MOFs. The conversion from Cu(OH)2 to Cu3(BTC)2, porosity and homogeneity of the coatings are tunable by controlling the EtOH:H2O volume ratio of the MOF precursors solution. Kinetics and mechanism of the conversion from metal hydroxide to MOF were investigated by using a quartz crystal microbalance (QCM) technique. The Cu3(BTC)2 coatings were finally tested for the electrochemically size-selective sensing and non-enzymatic electrocatalyst of glucose.