In this study, a CuO microsphere (WY1) was hydrothermal synthesized by employing a CTAB-cocoylsarcosine sodium composite micellar. WY1 has an unifirm hollow spherical structure formed by agglomeration of nanoparticles, and the results of X-ray photoelectron spectroscopy and electron paramagnetic resonance indicate that WY1 contains significantly increased oxygen vacancies. The degradation efficiency of WY1 for 40 mg L TC reached 93.26% after 60 min visible-light irradiation, which was 2.04 times higher than that of the product prepared without soft template (WNT). Especially, 81.67% residual rate of total organic carbon in the degradation of TC over WY1 was 17.83 times higher than that of WNT (4.58%). The spectral and electrochemical data reveal that the position of valence band of WY1 was exceeded the HO/·OH potential, and the ·OH species rarely played a key role in the photocatalytic degradation of tetracycline by cuprous oxide. In addition, the ·O species were generated by forming the electron transfer pathway with aid of oxygen vacancy-mediated trap, acting as another major active species, which followed a deep photodegradation mechanism of hydroxyl and superoxide radicals dual activities. The spatial agglomeration of cuprous oxide nanoparticles provides a new process for enhancing interfacial energy levels and inhibiting photocorrosion, which cater the antibiotic remediation.

中文翻译：

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富含氧空位的氧化亚铜微球对四环素的深度光降解表现出强吸收和高氧化能水平

在本研究中，采用 CTAB-椰油酰肌氨酸钠复合胶束水热合成了 CuO 微球（WY1）。 WY1具有由纳米颗粒团聚形成的均匀的空心球形结构，X射线光电子能谱和电子顺磁共振结果表明WY1含有显着增加的氧空位。可见光照射60 min后，WY1对40 mg·L TC的降解效率达到93.26%，是无软模板（WNT）制备产品的2.04倍。尤其是TC比WY1的降解总有机碳残留率为81.67%，是WNT（4.58%）的17.83倍。光谱和电化学数据表明，WY1的价带位置超出了HO/·OH电位，并且·OH物种在氧化亚铜光催化降解四环素中很少发挥关键作用。此外，借助氧空位介导的陷阱形成电子转移途径生成·O物种，作为另一个主要活性物种，遵循羟基和超氧自由基双重活性的深层光降解机制。氧化亚铜纳米粒子的空间团聚提供了一种增强界面能水平和抑制光腐蚀的新过程，从而满足抗生素修复的需要。