Tryfon Panagiota, Moustaka Julietta, Sperdouli Ilektra, Papoulia Chrysanthi, Pavlidou Eleni, Vourlias George, Adamakis Ioannis-Dimosthenis S, Moustakas Michael, Dendrinou-Samara Catherine
Laboratory of Inorganic Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
Materials (Basel). 2025 Aug 31;18(17):4078. doi: 10.3390/ma18174078.
Among different formations, inorganic/inorganic assemblies can be considered "two in one" systems offering collective and/or new physical-chemical properties and substantial activity. Herein, a post-synthetic approach involving the assembly through Van der Waals forces and/or hydrogen bonding of the preformed ZnO@OAm NPs and Ca(OH)@OAm NPs of non-uniform sizes (9 nm and 27 nm, respectively), albeit coated with the same surfactant (oleylamine-OAm), is reported. The resulting semiconductor hetero-nanostructure (named CaZnO) has been physicochemically characterized. The X-ray diffraction (XRD) peaks correspond to both ZnO and Ca(OH), confirming the successful formation of a dual-phase system. Field emission scanning electron microscopy coupled with energy-dispersive spectroscopy (FESEM-EDS) of CaZnO indicated the formation of Ca(OH) NPs decorated with irregular-shaped ZnO NPs. The synthesized hetero-nanostructure was evaluated by assessing any negative effects on the photosynthetic function of tomato plants as well as for the generation of reactive oxygen species (ROS). The impact of the CaZnO hetero-nanostructure on photosystem II (PSII) photochemistry was evaluated under both the growth light intensity (GLI) and a high light intensity (HLI) at a short (90 min) and long (96 h) duration exposure. An enhancement of photosystem II (PSII) function of tomato plants by 15 mg L CaZnO hetero-nanostructure right after 90 min was evidenced, indicating its potential to be used as a photosynthetic biostimulant, improving photosynthetic efficiency and crop yield, but pending further testing across various plant species and cultivation conditions.
在不同的结构中，无机/无机组装体可被视为“二合一”系统，具有集体和/或新的物理化学性质以及显著的活性。本文报道了一种合成后方法，该方法涉及通过范德华力和/或氢键作用，将尺寸不均一（分别为9纳米和27纳米）的预制ZnO@OAm纳米颗粒和Ca(OH)@OAm纳米颗粒进行组装，尽管它们都包覆有相同的表面活性剂（油胺 - OAm）。所得的半导体异质纳米结构（命名为CaZnO）已通过物理化学方法进行了表征。X射线衍射（XRD）峰对应于ZnO和Ca(OH)，证实了双相系统的成功形成。CaZnO的场发射扫描电子显微镜与能量色散光谱联用（FESEM - EDS）表明形成了由不规则形状的ZnO纳米颗粒装饰的Ca(OH)纳米颗粒。通过评估对番茄植株光合功能的任何负面影响以及活性氧（ROS）的产生，对合成的异质纳米结构进行了评价。在生长光强（GLI）和高光强（HLI）条件下，在短时间（90分钟）和长时间（96小时）暴露后，评估了CaZnO异质纳米结构对光系统II（PSII）光化学的影响。90分钟后，15毫克/升的CaZnO异质纳米结构使番茄植株的光系统II（PSII）功能增强，这表明其有潜力用作光合生物刺激剂，提高光合效率和作物产量，但仍有待在各种植物物种和栽培条件下进行进一步测试。
