Photocatalytic Reduction of NOx Pollution by BiFeO۳Nanocrystals in the Present of UV light

This paper is report on photocatalytic reduction of NOx pollutant by BiFeO۳nanocatalyst.For increasing thephotocatalytic activity of prepared BiFeO۳nanocrystals ۵% Sr was doped to catalyst structure. A citrate method was appliedto synthesis of BiFeO۳ (BFO) and Sr۵%-doped BiFeO۳. X-ray diffraction pattern confirm the formation of perovskitestructure of prepared BiFeO۳.Prepared nanophotocatalysts were used to photo catalytic reduction of NOx (NO, NO۲)pollutant in self- designed photo reactor. Results show that Sr۵%-doped BiFeO۳ has higher photo catalytic activity thanBiFeO۳. Influence of relative humidity was investigated and it was found that increase the relative humidity untiloptimumpercentage (۵۰%) cause to increase the NOxPhoto reduction,after thatconversion of NOx was decreased with increasinghumidity.

کلیدواژه ها:

Photocatalytic reduction ، Nanoparticles ، Sol-gel ، Bismuth ferrite ، NOx Elimination