Development of a bio-inspired photo-recyclable feather carbon adsorbent towards removal of amoxicillin residue in aqueous solutions
Development of a bio-inspired photo-recyclable feather carbon adsorbent towards removal of amoxicillin residue in aqueous solutions
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开发一种仿生光可回收羽毛碳吸附剂，用于去除水溶液中的阿莫西林残留物
DOI：
10.1016/j.cej.2019.03.160
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发表时间：
2019
影响因子：
15.1
通讯作者：
An Lihui
中科院分区：
文献类型：
--
作者：
Li Huiqin;Hu Jingtao;Wang Xiaojing;An Lihui
受其β-折叠层的特殊微结构的启发，利用废弃的家禽羽毛合成光可回收的羽毛生物炭（PFB）。考虑到钛前体与角蛋白的交联性质，采用三段式方法制备该生物炭。形貌研究表明，PFB主要由多层石墨烯样纳米片组成，并均匀掺杂超细tio2纳米颗粒。用阿莫西林评价吸附和光降解能力。由于在多层氧化石墨烯框架上具有不同的官能团，PFB表现出优异的吸附能力，其光响应区域扩展到可见光。特别是，在间歇实验中获得了额外的光可回收行为，并对反应机理进行了检测。经可见光照射后，PFB的吸收率可达80.98%。通过总有机碳（TOC）和质谱（MS）分析进一步研究了矿化能力。此外，考虑到无成本的废物原料和易于自组装的制造方法，这种光可回收的羽毛生物炭在未来的废水处理中具有潜力。
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 TiO2nanoparticles 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.