Catalytic activity of porous carbon nitride regulated by polyoxometalates under visible light

Abstract

A porous composite catalyst is prepared by modifying mpg-C3N4 with polyacids through ultrasound. When the mass ratio of SiW12 to mpg-C3N4 was 1 : 5, the degradation of phenol showed the best catalytic activity, which was 3.5 times that of mpg-C3N4.

Tetrahedral Keggin Core Tunes the Visible Light-Assisted Catalase-Like Activity of Icosahedral Keplerate Shell

“…As depicted in Figures S13 and S14, PMo 12 with a band gap of 2.35 eV (Figure S14) shrinks the energy edge of the pertinent core–shell cluster to 2.17 eV (in comparison with 2.34 eV for K O , see Figure S13); nevertheless, SiMo 12 with almost the same band gap (2.36 eV) and BW 12 possess a wider band gap of 2.7 eV (Figure S14), almost ineffective on the edge energy (2.30 and 2.38 eV for SiMo 12 @K and BW 12 @K, respectively, in comparison with 2.34 eV for K O , see Figure S13). The more and broader absorption of visible light by Keggin PMo 12 than that of SiMo 12 and BW 12 (Figure S14) and its higher electron reduction capability ,, could be reasonable for the reduction in the band edge of PMo 12 @K and improving its photoredox activity. Given the superior catalytic performance of PMo 12 @K in H 2 O 2 dismutation in this work, the following studies will be focused on this core–shell cluster, and the results are compared with those of the {Mo 72 Fe 30 } shells wherever possible.…”

Accelerating NADH oxidation and hydrogen production with mid-gap states of nitrogen-rich carbon nitride photocatalyst

“…Furthermore, ESR signals detected are assigned to DMPO-CH 3 · and DMPO-OCH 3 · reflecting the interaction of OH · with DMSO, and oxygen and their trapping by DMPO. 43 , 44 , 45 The ESR trapping results favor the generation of OH · and O 2 -· on NPCN catalyst.…”

Research progress on the inhibition of enzymes by polyoxometalates

“…When they are used in combination with other components, they can be used as a new multi-functional catalyst and improve the catalytic efficiency. [3][4][5] In view of the unique magnetic properties of polyoxometalates, Brønsted acidity and other characteristics, polyoxometalates play an important role in solving environmental problems, such as toxic gas isolation, wastewater purification, etc. 6 Polyoxometalates can also be used in multifunctional composite materials such as nanomaterials.…”