In this study, CuO–ZrO₂ nanoparticles (ZrO₂ modified by copper(II)oxide) were prepared by using the impregnation method. The physicochemical properties of produced nanoparticles were characterized using differential reflectance spectra, X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. The occurrence of copper(II) was confirmed by XPS technique. The calculated average crystallite size was determined by TEM spectroscopy. The DRS studies exhibited a reduction in the band gap of ZrO₂ from 4.7 to 2.9 eV after modification with copper(II) oxide. The photocatalytic method with sunlight was used to examine the ability of copper(II) oxide-modified zirconium(IV) oxide nanoparticles in removing toxic chemicals such as rhodamine B (RhB) and methylene blue (MB). Based on the analysis of experiments, copper(II)oxide-modified ZrO₂ showed a good photocatalytic activity, such that 1 mg of the photocatalyst degraded 10 ppm of MB and RhB within 30 and 60 min, respectively. The degradation of MB and RhB dyes was tested four and three times, respectively, to ensure reusability of photocatalyst.

Graphic abstract

Copper(II)oxide-modified zirconium(IV) oxide nanoparticles were examined in regard to their ability in removing toxic chemicals such as rhodamine B (RhB) and methylene blue (MB) through the use of the photocatalytic method. Based on the analysis of experiments, copper(II)oxide-modified ZrO₂ showed a good photocatalytic activity, such that 1 mg of the photocatalyst degraded 10 ppm dye within 30 and 60 min for MB and RhB, respectively.

中文翻译：

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改性ZrO 2纳米粒子通过阳光降解MB和RhB

在这项研究中，采用浸渍法制备了CuO-ZrO ₂纳米颗粒（氧化铜（II）修饰的ZrO ₂）。使用差示反射光谱，X射线衍射，场发射扫描电子显微镜，透射电子显微镜，能量色散X射线光谱和X射线光电子光谱来表征所产生的纳米颗粒的理化性质。通过XPS技术证实了铜（II）的存在。通过TEM光谱法确定计算的平均微晶尺寸。DRS研究显示ZrO ₂的带隙减小用氧化铜（II）改性后的电导率在4.7至2.9 eV之间。阳光下的光催化方法用于检查氧化铜（II）改性的氧化锆（IV）纳米粒子清除有毒化学物质如罗丹明B（RhB）和亚甲基蓝（MB）的能力。根据实验分析，氧化铜（II）修饰的ZrO ₂显示出良好的光催化活性，因此1 mg的光催化剂分别在30分钟和60分钟内降解了10 ppm的MB和RhB。MB和RhB染料的降解分别进行了4次和3次测试，以确保光催化剂的可重复使用性。

图形摘要

研究了氧化铜（II）改性的氧化锆（IV）纳米粒子通过使用光催化方法去除有毒化学物质如罗丹明B（RhB）和亚甲基蓝（MB）的能力。根据实验分析，氧化铜（II）修饰的ZrO ₂显示出良好的光催化活性，因此1 mg的光催化剂分别在30分钟和60分钟内降解了MB和RhB的10 ppm染料。