RETRACTED: Enhanced photocatalytic degradation of 4-chlorophenol by Zr4+ doped nano TiO2
Journal of Molecular Catalysis A: Chemical (2007) - Comments
doi: 10.1016/j.molcata.2006.10.051  issn: 1381-1169 

N. Venkatachalam, M. Palanichamy, Banumathi Arabindoo, V. Murugesan