PEMBUATAN DAN KARAKTERISASI KATALIS ZnO/KARBON AKTIF DENGAN METODE SOLID STATE DAN UJI AKTIFITAS KATALITIKNYA PADA DEGRADASI RHODAMIN B

Abstract

ABSTRACT Composite catalyst ZnO/Activated Carbon (ZnO/AC) had been synthesized successfully by solid state method. Synthesis was done by varying the addition of activated carbon (AC) 2%, 5%, and 10% ZnO mass. Composite catalyst were calcinated at 400oC and characterized by FTIR (Fourier Transform Infra Red), XRD (X-Ray Diffraction), SEM (Scanning Electron Microscopy). Based on the results of FTIR, absorption appeared in the region wave number 1400-1600 cm-1, which indicated stretching of C=C was assumed come from AC. From the XRD results, it was known by the addition of AC, not overly change the crystallinity and crystal size of ZnO, the crystal structure is hexagonal (wurtzite). SEM images showed AC prevented the agglomeration of ZnO that would expand the surface area of ZnO and increased catalytic activity of ZnO. For the results of the catalytic activity test, catalyst ZnO/AC was tested on the degradation of Rhodamine B solution (10 ppm) by UV light irradiation, where the increasing number of trains the catalytic ability of ZnO also increased, it could be concluded that activated carbon can support to increase the role of ZnO in degrading Rhodamine B. Keywords: composite catalyst, ZnO, activated carbon, solid state, Rhodamine B