Four 3D Co(ii) MOFs based on 2,4,6-tris(4-pyridyl)-1,3,5-triazine and polycarboxylic acid ligands and their derivatives as efficient electrocatalysts for oxygen reduction reaction.

Different aromatic polycarboxylic acids are employed as auxiliary ligands to give rise to structural diversities in Co(ii)-tpt (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine) frameworks. By introducing various secondary aromatic polycarboxylate anions, namely, biphenyl-3,4',5-tricarboxylic acid (Hbpt), 1,3,5-benzenetricarboxylic acid (Hbtc) and 2,6-dimethyl pyridine-3,5-dicarboxylic acid (Hdmdcpy) into the Co(ii)-tpt system (tpt = 2,4,6-tris(4-pyridyl)-1,3,5-triazine), four new complexes [Co(tpt)(Hbpt)]·0.5DMDP (1) (DMDP = N,N' = dimethylpropyleneurea), [Co(btc)(tpt)(HO)]·3HO (2), [Co(btc)(tpt)Cl]·DMDP·1.

Highly selective and active Cu-InO/C nanocomposite for electrocatalytic reduction of CO to CO.

The Cu-InO/C nanocomposite was prepared by a simple solid-phase reduction method. The introduction of InO into Cu/C to form the Cu-InO/C nanocomposite evidently enhances the electrocatalytic activity for the selective reduction of CO to CO. Specifically, the Cu-InO/C nanocomposite exhibits higher Faraday efficiency (FE = 86.

A Simple and Convenient Aptasensor for Protein Using an Electronic Balance as a Readout.

The electronic balance, one of the most common pieces of equipment in the laboratory, is normally used to directly measure the weight of a target with high accuracy. However, little attention has been paid to the extension of its applications. In this study, an electronic balance was used as a readout to develop a novel aptasensor for protein quantification for the first time.