In this section, you can access to the latest technical information related to the FUTURE project topic.

Effect of ammonia?derived species on visible?light photocatalytic activity of Au supported on amorphous TiO2 activated by plasma

Amorphous TiO2 supported Au photocatalyst (Au/AmT) is prepared via modified impregnation method with ammonia washing, followed by cold plasma treatment to activate the photocatalysts. Residual ammonia ([NH3]s) is formed due to the hydrogen bond between surface OH groups on AmT and ammonia. The [NH3]s suppressed the reduction of Au?+ and occupied active sites, leading to a poor activity of as?prepared Au/AmT. The performance of cold plasmas in activation strongly depends on discharge gases. N2 and O2 plasmas not only cannot reduce Au?+ into Au0 but also convert [NH3]s into poisoning species [NOy]s during activation. H2 plasma with a strong reducibility can simultaneously reduce Au?+ and remove [NH3]s, thus enabling Au/AmT to achieve the highest visible?light photocatalytic activity in CO oxidation.

» Author: Zhi?Guang Sun , Xiao?Song Li , Jing?Lin Liu , Bin Zhu , Xingguo Li , Ai?Min Zhu

» Reference: doi:10.1002/ppap.201800095

» Publication Date: 24/07/2018

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