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首页> 外文期刊>Applied Physics >Rare-earth doping engineering in nanostructured ZnO: a new type of eco-friendly photocatalyst with enhanced photocatalytic characteristics
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Rare-earth doping engineering in nanostructured ZnO: a new type of eco-friendly photocatalyst with enhanced photocatalytic characteristics

机译：纳米结构ZnO中的稀土掺杂工程：一种新型的具有光催化特性的环保型光催化剂

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摘要

Aiming at developing practical and eco-friendly photocatalyst with the best photocatalytic performance for dye wastewater treatment, we demonstrated the new type of rose-like ZnO photocatalysts doped with 0–2 mol% rare-earth element in the present work, i.e., lanthanum (La). A facile synthesis of nanostructured La–ZnO by chemical solution deposition method with low cost and tailored photocatalytic performance is reported. The corresponding structures, morphologies, and chemical and photocatalytic characteristics are complementarily investigated by XRD, Raman, SEM, TEM, XPS, PL, and UV–Vis spectroscopic techniques. The La ions with trivalent state are successfully doped into the ZnO host. Each petal of rose-like nanostructured La–ZnO is composed of numerous nanoparticles in diameter of 15–25 nm attached on surface in order. The degradation efficiency of rhodamin B over La–ZnO photocatalysts increases up to the doping level of 1.5 mol% and decreases at higher dopant contents. The La doping results in a slight red shift in the absorption spectra edge and, consequently, boosts up the light absorption efficiency of the photocatalysts. Among the developed photocatalysts, 1.5 mol% La-doped ZnO exhibits the highest photocatalytic activity for the degradation of rhodamin B, and this composition is poised as the best combination of photocatalytic performance and production cost showing the promise as a new platform of industrial level available photocatalysts for dye wastewater treatment.
机译：为了开发具有最佳光催化性能的实用和环保型光催化剂，用于处理染料废水，我们在当前工作中展示了新型的掺杂有0-2 mol％稀土元素的玫瑰状ZnO光催化剂，即镧（ La）。通过化学溶液沉积法以低成本和定制的光催化性能轻松合成纳米结构的La–ZnO。通过XRD，拉曼，SEM，TEM，XPS，PL和UV-Vis光谱技术对相应的结构，形态，化学和光催化特性进行了补充研究。具有三价态的La离子已成功掺杂到ZnO主体中。玫瑰状纳米结构La–ZnO的每个花瓣由许多直径为15–25 nm的纳米粒子按顺序附着在表面上组成。若丹明B在La-ZnO光催化剂上的降解效率最高可提高至1.5mol％的掺杂水平，而在较高的掺杂剂含量下降解效率降低。 La掺杂导致吸收光谱边缘出现轻微的红移，因此提高了光催化剂的光吸收效率。在已开发的光催化剂中，1.5 mol％的La掺杂的ZnO对若丹明B的降解表现出最高的光催化活性，并且该组合物有望成为光催化性能和生产成本的最佳组合，显示出有望作为工业水平的新平台用于染料废水处理的光催化剂。

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  • 来源
    《Applied Physics》 |2018年第9期|605.1-605.12|共12页
  • 作者

    Yue Fang; Jihui Lang; Jiaying Wang; Qiang Han; Zhe Zhang; Qi Zhang; Jinghai Yang; Scott Guozhong Xing;

  • 作者单位

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University;

    United Microelect Corp. Ltd;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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