Comment on 'Photocatalytic Oxidation Mechanism of As(lll) on TiO_2: Unique Role of As(lll) as a Charge Recombinant Species'

摘要

Choi et al. claimed that they provided undisputed evidence to support that As(m) acted as a charge recombination center mainly by canying out time-resolved diffuse reflectance (TDR) spectroscopy measurements.1 However, unfortunately, the authors neglected important affecting factors of TDR signal. We believe that most of their conclusions must be met with serious skepticism.