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Citation: WU Jingyue, LIU Xinyang, LI Naixuan. Preparation of Dual Ligand Imitation Enzyme Catalysts and Its Use in Photodegradation of Hydroquinone in Water[J]. Chinese Journal of Applied Chemistry, ;2014, 31(4): 417-423. doi: 10.3724/SP.J.1095.2014.30264 shu

Preparation of Dual Ligand Imitation Enzyme Catalysts and Its Use in Photodegradation of Hydroquinone in Water

1.
School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China

Corresponding author: LI Naixuan,
Received Date: 24 May 2013
Available Online: 24 June 2013
Fund Project: 天津市应用基础及前沿技术研究计划(11JCZDJC24400)资助 (11JCZDJC24400)

An axial imidazole five-coordinate biomimetic catalyst was prepared from natural hemin and imidazole,and was immobilized on the surface of magnetic cellulose nanospheres.These modified nanospheres were characterized by UV-visible(UV-Vis) spectrophotometer,Fourier transform infrared spectroscopy(FT-IR),transmission electron microscopy(TEM),thermal gravimetric analysis(TGA) and vibrating sample magnetometry(VSM).Their photocatalytic activity and stability were evaluated by the catalytic degradation of hydroquinone under visible light irradiation.The results show that 96.97% of HQ was degraded with an initial concentration of HQ at 20 mg/L under simulated sunlight irradiation for 6 h at pH=6 in the presence the catalyst at 0.2 g/L.After five-recycle,the photocatalyst still provides up to 92% degradation of HQ.The photocatalytic degradation mechanism of HQ under visible light irradiation was also investigated.
- Hemin,
- imidazole,
- axial-ligand,
- photocatalytic,
- hydroquinone
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