Design of Photocatalytic Reaction Field for Decomposition of Gaseous Ammonia or Amine

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Gaseous ammonia has a characteristic pungent odor and its high concentration gas is harmful for human health. In this work, the composite photocatalysts which consist of TiO_2 and tungstophosphoric acid as a solid acid were prepared and their adsorption and photocatalytic decomposition properties against gaseous ammonia were investigated. The composite exhibited 3.5 times of ammonia adsorption capacity larger than that of TiO_2.The decomposition rate of ammonia by the composite was almost the same of that of TiO_2 however the amount of ammonia on the composites were largely decreased