Ultrathin carbon-coated Zr3+-ZrO2 nanostructures for efficient visible light photocatalytic antibiotic elimination
Ultrathin carbon-coated Zr3+-ZrO2 nanostructures for efficient visible light photocatalytic antibiotic elimination
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DOI：
10.1016/j.cej.2021.128621
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发表时间：
2021-05
影响因子：
15.1
通讯作者：
Jielin Huang;Jing Liu;Li-gang Tian;Xiangli Li;Ma Xinqi;Xin Yu;Quanhui Guo;Junwei Zhao
中科院分区：
文献类型：
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作者：
Jielin Huang;Jing Liu;Li-gang Tian;Xiangli Li;Ma Xinqi;Xin Yu;Quanhui Guo;Junwei Zhao
表面改性超宽带隙半导体的宽带太阳光吸收和可见光光催化性能因其具有更负的导带势和更正的价带势而对难降解有机物的降解作用而受到广泛关注。本文报道了一种新的改进溶剂热方法，通过在小分子醇中引入蒸馏水来合成结晶碳包覆的Zr 3 +-ZrO 2复合材料，用于增强可见光吸收和可见光光催化降解四环素，其中蒸馏水有利于Zr ~（3 +-）的结晶，ZrO 2和小分子醇聚合生成的碳纳米管层有助于Zr 3+物种的生成和Zr 3+自分散。掺杂ZrO 2纳米粒子。实验结果还表明，碳包覆Zr 3 +-ZrO 2复合材料具有增强的可见光吸收、长寿命电荷、高效的可见光光催化性能和良好的可回收稳定性。此外，还对碳包覆Zr 3 +-ZrO 2复合材料在可见光照射下的光催化机理和抗生素降解途径进行了详细的探讨。
Broadband solar light absorption and visible light photocatalysis of surface modified ultrawide bandgap semiconductors are receiving wide attentions because of their more negative conduction band potential and positive valence band potential for refractory organics degradation. Here, we reported a novel modified solvothermal strategy by the introduction of distilled water into small molecular alcohols to synthesize crystallized carbon-coated Zr3+-ZrO2composites for enhanced visible light absorption and visible light photocatalytic tetracycline degradation, in which the distilled water favored for the crystallization of Zr3+-ZrO2and the formed ultrathin carbon layers derived from the polymerization of small molecular alcohols were contributing to the generation of Zr3+species and well dispersion of Zr3+self-doped ZrO2nanoparticles. The experimental results also showed that carbon-coated Zr3+-ZrO2composites exhibited enhanced visible light absorption, long-lived charges, efficient visible light photocatalytic performance and good recyclable stability. Besides, possible photocatalytic mechanism and antibiotic degradation pathways over carbon-coated Zr3+-ZrO2composites under visible light irradiation were also proposed in detail.