Acta Chim Slov. 2017 Mac;64(1):144-158. doi: 10.17344/acsi.2016.2983.

Utilization of Corn Cob and TiO2 Photocatalyst Thin Films for Dyes Removal.

Acta chimica Slovenica

Hui-Yee Gan, Li-Eau Leow, Siew-Teng Ong

PMID: 28380224 DOI: 10.17344/acsi.2016.2983

Abstract

The effectiveness of using TiO2 and corn cob films to remove Malachite Green oxalate (MG) and Acid Yellow 17 (AY 17) from binary dye solution was studied. The immobilization method in this study can avoid the filtration step which is not suited for practical applications. Batch studies were performed under different experimental conditions and the parameters studied involved initial pH of dye solution, initial dye concentration and contact time and reusability. The equilibrium data of MG and AY 17 conform to Freundlich and Langmuir isotherm model, respectively. The percentage removal of MG remained high after four sorption cycles, however for AY 17, a greater reduction was observed. The removal of both dyes were optimized and modeled via Plackett- Burman design (PB) and Response Surface Methodology (RSM). IR spectrum and surface conditions analyses were carried out using fourier-transform infrared spectrophotometer (FTIR), scanning electron microscope (SEM) and atomic force microscope (AFM), respectively.

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't