3 years ago

Self‐floating Cu/N co‐doped TiO2/diatomite granule composite with enhanced visible‐light‐responsive photoactivity and reusability

Yan Chen, Qiong Wu, Jun Wang, Youtao Song

Abstract

BACKGROUND

The remnants of antibiotics in water environment have emerged as hazardous pollutants. To eliminate these remnants, new methods have been proposed, including photocatalysis. Powdery photocatalyst has been widely studied, yet its several disadvantages such as light‐harvesting and recyclability in suspension system are the bottlenecks for practical application. The recent report on floating photocatalyst provided an alternative method to solve the above problems. In this paper, TiO2 nanoparticles were co‐doped by copper and nitrogen, and then immobilized onto substrate diatomite. The composite powder was granulated to produce self‐floating granule catalyst (Cu/N co‐doped TiO2/diatomite hybrid granule), denoted as CN‐TDHG. The photoactivity of CN‐TDHG was investigated via the degradation of antibiotic oxytetracycline (OTC) under visible light.

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