Synthesis, structure and photoeatalytic properties of beta-ZrMo_2O_8

摘要

Monoclinic ZrMo_2O_8 was synthesized via solid state method and single crystals of the title compound have been grown by the hydrothermal method. The crystals belong to monoclinic crystal system with space group C2/c (No. 15) with a = 11.4243(19) A, b = 7.9297(6) A, c = 7.4610(14) A and beta= 122.15(2) deg, Z = 4. The bandgap of the compound was 2-57 eV. Unlike the other polymorphs of ZrMo_2O_8, the monoclinic form has unique crystallographic features with ZrO_8 and Mo_2O_8 polyhedra. The photoeatalytic activity of this compound has been investigated for the first time for the degradation of various dyes under UV irradiation and has been compared with the photoactivity of the trigonal form of ZrMo_2O_8. It has been observed that this compound exhibits specificity towards the degradation of cationic dyes.