Nitrogen-Doped TiO₂/Nitrogen-Containing Biochar Composite Catalyst as a Photocatalytic Material for the Decontamination of Aqueous Organic Pollutants.

ABSTRACT: In this study, a waste walnut shell-derived biochar enriched with nitrogen (N-biochar) is mixed with nitrogen-doped TiO₂ (N-TiO₂) to fulfill an affordable composite material for the degradation of methyl orange (MO). Results showed that porous structure and oxygen-containing functional groups of biochar facilitate contact with MO during the reaction process. Meanwhile, doped nitrogen has a positive effect on improving the reaction activity due to the existence of a substituted state and a gap state in the catalyst. It was revealed that the N-TiO₂/N-biochar (NCNT0.2/1) exhibited better photocatalytic degradation efficiency (97.6%) and mineralization rate (85.4%) of MO than that of TiO₂, N-TiO₂, and TiO₂/N-biochar due to its s

SUBMITTER: Xiong Z 

PROVIDER: S-EPMC9835194 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature