Details

Autor(en) / Beteiligte

• Liang, Honglian
• Wang, Shujun
• Lu, Yanhong
• Ren, Ping
• Li, Guihua
• Yang, Fenghao
• Chen, Yu

Titel

Highly efficient and cheap treatment of dye by graphene-doped TiO 2 microspheres

Ist Teil von

• Water science and technology, 2021-01, Vol.83 (1), p.223

Ort / Verlag

England

Erscheinungsjahr

2021

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Highly efficient dye wastewater treatment by photocatalytic catalysis commonly requires expensive catalysts, long degradation time and a complicated procedure. Here, we for the first time prepared cheap graphene-doped titanium dioxide microspheres with a simple procedure to degrade dye with high efficiency. When the catalyst concentration was 0.2 g·L , the photocatalysis degradation extent of methylene blue solution, methylene green solution and 1,9-dimethyl methylene blue solution reached 96.4, 85.9 and 98.7%, respectively. The results showed that the degradation reactions accorded with the Langmuir-Hinshelwood model, and the photocatalytic reactions belonged to a first-order reaction in the primary stage. Furthermore, different photocatalytic degradation mechanisms were proposed, which have not been found in other literature. This work opened a new route for simple preparation of cheap microspheres in photocatalytic dye wastewater treatment with high efficiency.