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首页> 外文期刊>RSC Advances >Co2+ and Ho3+ doped CuS nanocrystals with improved photocatalytic activity under visible light irradiation
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Co2+ and Ho3+ doped CuS nanocrystals with improved photocatalytic activity under visible light irradiation

机译：CO2 +和HO3 +掺杂CU纳米晶体，具有可见光照射下的显着光催化活性

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摘要

In this work, Co2+ and Ho3+ doped CuS nanostructured assemblies have been synthesized by means of a surfactant free hydrothermal method and investigated as photocatalysts in the degradation of methylene blue (MB) dye under visible light irradiation in the presence of H2O2. Firstly, it is found that the nature of dopants (M = Co2+, Ho3+) plays an important role in controlling the morphology of CuS structures as observed in FESEM and TEM analysis. Secondly, the band gap values of the M doped CuS structures showed a red shift. As a result, the M doped CuS structures exhibited enhanced photocatalytic activities compared to the pristine CuS structures. Among the different photocatalysts tested, 2.5 mol% cobalt doped CuS (CC samples) showed the best activity (similar to 52% more than CuS) in the photocatalytic degradation of dyes (almost complete degradation (similar to 99%) of MB dye in 20 min). In addition, these CC samples showed good catalyst stability for the degradation of dyes. The overall differences in the catalytic activity of the samples tested are discussed in terms of their band gap, surface area, porosity, defect surface, and morphology.
机译：在该作品中，通过表面活性剂的游离水热法合成了CO 2 +和HO3 +掺杂CU纳米结构组件，并在H 2 O 2存在下在可见光照射下在亚甲基蓝（MB）染料的降解中作为光催化剂进行研究。首先，发现掺杂剂（M = CO2 +，HO3 +）的性质在控制FESEM和TEM分析中观察到的CUS结构的形态方面起着重要作用。其次，M掺杂CUS结构的带隙值显示出红移。结果，与原始CUS结构相比，M掺杂CUS结构表现出增强的光催化活性。在测试的不同光催化剂中，2.5mol％钴掺杂CUS（CC样品）显示了在染料的光催化降解中的最佳活性（类似于52％超过CU）（几乎完全降解（类似于99％）MB染料20 “此外，这些CC样品显示出染料的降解的良好催化剂稳定性。测试所测试样品的催化活性的总体差异在其带隙，表面积，孔隙率，缺陷表面和形态方面讨论。

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  • 来源
    《RSC Advances》 |2016年第48期|共8页
  • 作者

    Hosseinpour Zahra; Hosseinpour Sara; Maaza Malik; Scarpellini Alice;

  • 作者单位

    Univ Tabriz Fac Chem Dept Inorgan Chem Tabriz 5166614766 Iran;

    Univ Tabriz Fac Chem Dept Inorgan Chem Tabriz 5166614766 Iran;

    Univ South Africa Coll Grad Studies UNISA Africa Chair Nanosci Nanotechnol Muckleneuk Ridge POB 392 Pretoria South Africa;

    Ist Italiano Tecnol Dept Nanochem Via Morego 30 I-16163 Genoa Italy;

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  • 正文语种 eng
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