For the first time, a bifunctional colorimetric biosensing platform has been developed, based on a polypyrrole coated fluconazole-functionalized polyoxometalate-based metal–organic framework with ultrahigh stability for the enhanced detection of H2O2 and ascorbic acid.

To increase the conductivity of polyoxometalate‐based metal–organic frameworks (POMOFs) and promote their applications in the field of energy storage, herein, a simple approach was employed to improve their overall electrochemical performances by introducing a functionalized single‐walled carbon nanotubes (SWNT‐COOH). A new POMOF compound, [Cu18(trz)12Cl3(H2O)2][PW12O40] (CuPW), was successfully synthesized, then the size‐matched functionalized SWNT–COOH was introduced to fabricate CuPW/SWNT–COOH composite (PMNT–COOH) by employing a simple sonication‐driven periodic functionalization strategy. When the PMNT–COOH nanocomposite was used as the anode material for Lithium‐ion batteries (LIBs), PMNT–COOH(3) (CuPWNC:SWNT‐COOH=3:1) showed superior behavior of energy storage, a high reversible capacity of 885 mA h g−1 up to a cycle life of 170 cycles. The electrochemical results indicate that the uniform packing of SWNT–COOH provided a favored contact between the electrolyte and the electrode, resulting in enhanced specific capacity during lithium insertion/extraction process. This fabrication of PMNT–COOH nanocomposite opens new avenues for the design and synthesis of new generation electrode materials for LIBs.

Two new crystalline POM-pillared 3D porous arrays, Co-PMo and Co-PW, have been synthesized. The Co-PMo/CNTs nanocomposites with increased effective sites and excellent conductivity exhibit excellent energy storage performance.

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