Ag and Cu loaded on TiO(2)/graphite as a catalyst for Escherichia coli-contaminated water disinfection

作者：Rahmawati Fitria^*; Kusumaningsih Triana; Hapsari Anita M; Hastuti Aris

来源：CHEMICAL PAPERS, 2010, 64(5): 557-565.

DOI：10.2478/s11696-010-0036-4

• Ag-TiO(2)/G
• Cu-TiO(2)/G
• Escherichia coli
• disinfection

TiO(2) film was synthesized by means of the chemical bath deposition (CBD) method from TiCl(4) as a precursor and surfactant cetyl trimethyl ammonium bromide (CTAB) as a linking and assembling agent of the titanium hydroxide network on a graphite substrate. Ag and Cu were loaded on the TiO(2) film by means of electrodeposition at various applied currents. Photoelectrochemical testing on the composite of Ag-TiO(2)/G and Cu-TiO(2)/G was used to define the composite for Escherichia coli-contaminated water disinfection. Disinfection efficiency and the rate of disinfection of E. coli-contaminated water with Ag-TiO(2)/G as a catalyst was higher than that observed for Cu-TiO(2)/G in all disinfection methods including photocatalysis (PC), electrocatalysis (EC), and photoelectrocatalysis (PEC). The highest rate constant was achieved by the PEC method using Ag-TiO(2)/G, k was 6.49 x 10(-2) CFU mL(-1) min(-1). Effective disinfection times of 24 h (EDT(24)) and 48 h (EDT(48)) were achieved in all methods except the EC method using Cu-TiO(2)/G.

• 出版日期2010-10