SYNTHESIS AND PHOTOCATALYTIC ACTIVITY OF CUO/ZNO NANOPARTICLES VIA MODIFIED CHEMICAL PRECIPITATION METHOD

Alloyssius E.G. Gorospe

Progress Report

October 15, 2015

Preparation of ZnO nanostructures Preparation of CuO nanostructures Preparation of CuO/ZnO nanostructures

PREPARATION OF ZNO NANOSTRUCTURES

ZnSO4 solution: transparent

After dropwise addition to 0.2M NaOH solution: white colloidal suspension

After stirring for 1h: white precipitate formation

PREPARATION OF CUO NANOSTRUCTURES

PREPARATION OF CUO NANOSTRUSTURES

CuSO4 Solution: Light blueAfter addition to 0.2M NaOH: Light blue colloidal suspensionWhile stirring: dark blue precipitateAfter 1h stirring: Black precipitate

PREPARATION OF CUO/ZNO NANOSTRUCTURES

Combination of ZnSO4 and CuSO4 solution: light blue color

Addition to NaOH solution: light blue colloidal suspension

After 1h stirring: light blue precipitate

PREPARATION OF CUO/ZNO NANOSTRUCTURES

Right after stirring After 27 hours

WASHING AND DRYING OF CUO SAMPLE