Aliyu, Hauwa Sidi, et al. “Effective Removal of Nitrobenzene under Visible Light by Coupled Grafted Cassava ZnO in a Closed Photocatalytic Reaction Chamber”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 15, no. 1, Apr. 2014, pp. 25-36, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/2058.