In this work, cerium‐ and nickel‐codoped ZnS nanoparticles were obtained by a sonochemical method for 20 min. The nanoparticles were characterized by X‐ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), and microscopy electronic transmission (MET). The electrical properties are estimated through I‐V curves and the antimicrobial activity was analyzed against E. coli (gram‐negative) and S. aureus (gram‐positive) bacteria using the diffusion disk methodology. The diffractograms indicate the obtaining of cubic structure ZnS for the pure sample, whereas the doped samples present the cubic and hexagonal structures of the ZnS. The bandgap reduced from 3.60 to 3.52 eV, for pure and codoped samples. I‐V curves indicate an increase in resistivity with doping, being more evident for samples containing cerium. Antimicrobial activity increased as doping occurred, where the codoped sample showed the best results. Even for the low amount of dopant (1 mol%), the antimicrobial activity can be increased by about 50% for the codoped sample, compared to the pure ZnS. Thus, it is known that the doping of ZnS with cerium and nickel provides the stabilization of the hexagonal metastable phase, which acts to restrict electronic mobility and, consequently, improves the antimicrobial response of the material.

中文翻译：

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声化学法制得的铈和镍掺杂的zns纳米粒子的抗菌和电学性质

在这项工作中，通过声化学方法在20分钟内获得了铈和镍掺杂的ZnS纳米颗粒。纳米粒子的特征在于X射线衍射（XRD），漫反射光谱（DRS）和显微电子透射（MET）。通过I-V曲线估算电性能，并针对E分析抗菌活性。大肠杆菌（革兰氏阴性）和小号。金黄色（革兰氏阳性）细菌使用扩散盘方法。衍射图表明获得了纯样品的立方结构ZnS，而掺杂样品则显示了ZnS的立方和六边形结构。对于纯样品和共掺杂样品，带隙从3.60 eV降低到3.52 eV。I-V曲线表明掺杂时电阻率增加，对于含铈的样品更明显。抗菌活性随掺杂的增加而增加，共掺杂的样品显示出最好的结果。即使是少量的掺杂剂（1摩尔％），与纯ZnS相比，共掺杂样品的抗微生物活性也可以提高约50％。因此，已知用铈和镍掺杂ZnS提供了六方亚稳相的稳定化，其起到限制电子迁移率的作用，因此限制了电子的迁移。