Highly efficient ZnO/WO₃ nanocomposites towards photocatalytic gold recovery from industrial cyanide-based gold plating wastewater.

ABSTRACT: Discharging the gold-contained wastewater is an economic loss. In this work, a set of ZnO/WO₃ was facile synthesized by hydrothermal method in order to recover gold from the industrial cyanide-based gold plating wastewater by photocatalytic process. Effect of ZnO contents coupled with WO₃ was first explored. Then, effects of operating condition including initial pH of wastewater, type of hole scavenger, concentration of the best hole scavenger and photocatalyst dose were explored. A series of experimental results demonstrated that the ZnO/WO₃ nanocomposite with 5 wt% ZnO (Z_5.0/WO₃) depicted the highest photocatalytic activity for gold recovery due to the synergetic effect of oxygen vacancies, a well-constructed ZnO/WO₃ heter

SUBMITTER: Sangkhanak S 

PROVIDER: S-EPMC10733279 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature