Integrated photocatalytic dye degradation and hydrogen production by zinc oxysulfide
Invited conference paper presented and published in conference proceedings



摘要Textile and dyeing industries produce large amount of wastewater containing different types of organic synthetic dyes, which are non-biodegradable and toxic to the environment. Meanwhile, hydrogen (H2) has been accepted to be the most promising and clean renewable energy source to tackle the energy crisis in the future. Since the first introduction of photocatalysis in 1972, numerous studies have focused on photocatalytic generation of H2. With dyes in wastewater as sacrificing agents for the h+, the photocatalytic H2 production is expected to be enhanced together with the oxidative degradation of dyes. This integrated system will be greatly beneficial to our environment since the dyes can be degraded with concurrently produced H2 as a byproduct, solving the wastewater pollution problem while producing energy at the same time.

Visible-light-driven (VLD) photocatalyst, zinc oxysulfide (ZnOS), was synthesized by co-precipitation and calcination method. Results obtained indicated efficient photocatalytic degradation of an azo dye, Reactive Violet 5 (RV5), and H2 production using sulphide/sulphite (S2-/SO32-) system as sacrificing agent, by ZnOS. Meanwhile, results also showed that increased amount of H2 was produced using RV5 and S2-/SO32- together as sacrificing agents, with effective simultaneous degradation of RV5. The possible application of the photocatalytic system to simultaneously degrade dye and H2 production in water sample is discussed.
著者WONG Po Keung
會議名稱Catalysis Technology and Application
會議論文集題名Catalysis Technology and Application
出版社China Petroleum and Chemical Industry Science and Technology Exchange Center
頁次1 - 1
關鍵詞Photocatalysis, Dye Degradation, Hydrogen Production

上次更新時間 2018-22-01 於 05:54