The present article examines the synthesis and characterization of zinc oxide nanorods grown on zinc oxide and silver nanoparticle seeds. Zinc oxide seeds were electrodeposited on a support of fluorine-doped tin oxide glass and heat-treated at 380°C. Silver nanoparticles were then deposited on this substrate, which was heat-treated at 160°C. Their presence was confirmed using ultraviolet–visible spectroscopy, by observing an absorption peak around 400 nm, corresponding to surface plasmon resonance. Growth of zinc oxide nanorods was achieved in a chemical bath at 90°C. The obtained films were analyzed by cyclic voltammetry, X-ray diffraction, and scanning electron microscopy. They consisted of zinc oxide with a Wurtzite-type crystal structure, arranged as nanorods of 50 nm. X-ray photoelectron spectroscopy exhibits peaks attributed to silver (0) and to the formation of silver oxide on the silver nanoparticle surface. In addition, two types of oxygen (O 1 s) were observed: oxygen from the crystalline network (O–2) and chemisorbed oxygen (–OH), for the seed and the nanorod films, respectively. The nanorods grown on zinc oxide seeds with silver deposits had a round shape and greater photoactivity than those grown without silver. This difference is attributed to the additional reflection that silver provides to the light reaching the film, thereby increasing the photogeneration from the charge carriers.

中文翻译：

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电化学沉积在氧化锌种子纳米颗粒上的银对氧化锌纳米棒薄膜光电化学性能的影响

本文研究了在氧化锌和银纳米粒子种子上生长的氧化锌纳米棒的合成和表征。氧化锌种子电沉积在掺氟氧化锡玻璃的载体上，并在 380°C 下热处理。然后将银纳米颗粒沉积在该基材上，并在 160°C 下进行热处理。通过观察 400 nm 附近的吸收峰（对应于表面等离子体共振），使用紫外-可见光谱证实了它们的存在。氧化锌纳米棒的生长是在 90°C 的化学浴中实现的。通过循环伏安法、X 射线衍射和扫描电子显微镜分析获得的薄膜。它们由具有纤锌矿型晶体结构的氧化锌组成，排列为 50 nm 的纳米棒。X 射线光电子能谱显示出归因于银 (0) 和银纳米颗粒表面上形成的氧化银的峰。此外，观察到两种类型的氧 (O 1 s)：分别用于种子和纳米棒薄膜的结晶网络氧 (O-2) 和化学吸附氧 (-OH)。在有银沉积物的氧化锌种子上生长的纳米棒比没有银生长的纳米棒具有圆形和更大的光活性。这种差异归因于银为到达薄膜的光提供了额外的反射，从而增加了电荷载流子的光生。分别用于种子和纳米棒薄膜。在有银沉积物的氧化锌种子上生长的纳米棒比没有银生长的纳米棒具有圆形和更大的光活性。这种差异归因于银为到达薄膜的光提供了额外的反射，从而增加了电荷载流子的光生。分别用于种子和纳米棒薄膜。在有银沉积物的氧化锌种子上生长的纳米棒比没有银生长的纳米棒具有圆形和更大的光活性。这种差异归因于银为到达薄膜的光提供了额外的反射，从而增加了电荷载流子的光生。