Structural modification of defective WO by g-CN for photocatalytic gold recovery from non-cyanide-based plating effluent.

A set of nCN/WO composites was synthesized through a simple thermal treatment for gold recovery from the simulated effluent of a non-cyanide-based plating bath. The obtained results exhibited that all nCN/WO composites demonstrated a higher photocatalytic activity for gold recovery than their pristine components due to the formation of nanocomposites which paved a convenient pathway for charge transfer. Among all synthesized composites, the 5.

Highly-efficient recovery of silver from industrial cyanide-based plating effluent on TiO/activated carbon composites.

The release of silver-containing wastewater is an economic loss. In this works, the silver ions in the cyanide-based plating effluent of jewelry effluent was systematic recovered by the photocatalytic process using commercial semiconductors (TiO, ZnO, BiO and WO) and activated carbon (AC) enhanced semiconductors as the photocatalysts. The preliminary results demonstrated that the highest photocatalytic silver recovery was achieved via the use of TiO nanoparticles (NPs), ascribing to its better textural property that provided abundant active sites to undergo the reaction.

Roles of Mo dopant in BiWO for enhancing photocatalytic activities.

We present the investigation of the roles of molybdenum (Mo) dopant with a concentration of 0.0625% to 1.0% Mo into bismuth tungstate (BiWO) by a one-step hydrothermal method for the enhancement of photocatalytic activities.