Abstract
Inspired by its special micro-architecture of β-folding layers, the wasted poultry feather was utilized to synthesize a photo-recyclable feather biochar (PFB). In consideration of the crosslinking nature of Ti precursor and keratin, a three-stage method was deployed to develop this biochar. Morphology studies revealed that the PFB was mainly consisted with multilayered graphene like nanosheets, doping with ultrafine TiO2 nanoparticles homogeneously. Amoxicillin is applied to assess adsorption and photo-degradation abilities. Possessing different functional groups on multilayered graphene oxides like frameworks, the PFB have exhibited excellent adsorption ability and its photo responded region is extended to visible light. Particularly, an extra photo-recyclable behavior was achieved in batch experiments and the reaction mechanism was detected. Up to 80.98% of the absorbability of PFB was reborn after visible light irradiation. The mineralization ability was further studied with total organic carbon (TOC) and mass spectrum (MS) analyses. Besides, considering the cost-free waste feedstocks and easy self-assembling fabrication methods, this photo-recyclable feather biochar is potential in future wastewater treatment.
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