Pd²⁺, Pt²⁺, Ni²⁺ and Cu²⁺ complexes of N-ethyl-2-(2-hydroxybenzylidene) hydrazine-1-carbothioamide (H₂L) (have been prepared and fully characterized via SCXRD, FTIR, CHNS, UV-Vis, GC-MS, TGA and NMR. Ni²⁺, Pd²⁺ and Pt²⁺ complexes were used as novel single precursors for the preparation of noble metal/metal oxide nanoparticles via solid state thermal decomposition method based on their thermal characteristics. For the first time, one pot preparation of Pd/NiO and Pt/NiO nanoparticles (NPs) was achieved via this method. The prepared nanoparticles were characterized using XRD, TEM, XPS and UV-Vis analytical techniques. The photocatalytic activities of bare and noble metal modified NiO NPs were assessed toward the photodegradation of Methylene Blue dye (MB) under natural solar radiation. The tight contact between noble metals and NiO in addition to the lack of aggregation gave preference to this method. The nanoparticles demonstrated high photocatalytic activities with the following trend Pt/NiO (91.3 %)˃Pd/NiO(84.5%)˃NiO (45.0%). The enhanced photocatalytic efficiency in the presence of noble metals was attributed to lower charge carrier’s recombination rate and the fermi level energies of noble metal nanoparticles. Total organic carbon (TOC) analysis was performed to assess the mineralization ability of the Pt/NiO nanoparticles (90.7 % TOC Removal). For in-depth understanding the reasons behind Pt/NiO nanoparticles photo-reactivity, the revealing of reactive oxidative species (ROS) was achieved through scavenging trapping experiments.

N-乙基-2-(2-羟基亚苄基)肼-1-碳硫酰胺 (H ₂ L) 的Pd ²⁺、Pt ²⁺、Ni ²⁺和 Cu ²⁺配合物（已通过 SCXRD、FTIR、 CHNS、UV-Vis、GC-MS、TGA 和 NMR. Ni ²⁺、Pd ²⁺和 Pt ²⁺基于其热特性，配合物被用作通过固态热分解方法制备贵金属/金属氧化物纳米颗粒的新型单一前驱体。该方法首次实现了 Pd/NiO 和 Pt/NiO 纳米颗粒 (NPs) 的一锅制备。使用 XRD、TEM、XPS 和 UV-Vis 分析技术对制备的纳米颗粒进行表征。评估了裸金属和贵金属修饰的 NiO NPs 在自然太阳辐射下对亚甲蓝染料 (MB) 光降解的光催化活性。除了缺乏聚集外，贵金属和 NiO 之间的紧密接触使这种方法更受欢迎。纳米颗粒表现出高光催化活性，具有以下趋势 Pt/NiO (91.3 %)˃Pd/NiO(84.5%)˃NiO (45.0%)。在贵金属存在下光催化效率的提高归因于较低的电荷载流子复合率和贵金属纳米粒子的费米能级。进行总有机碳 (TOC) 分析以评估 Pt/NiO 纳米颗粒的矿化能力（90.7% TOC 去除）。为了深入了解 Pt/NiO 纳米粒子光反应性背后的原因，通过清除捕获实验实现了活性氧化物质 (ROS) 的揭示。