Herein, we report the wet-chemical synthesis of a ferromagnetic nickel-doped ZnO (Zn_1-xNi_xO) nanocatalyst as a novel and visible-light-driven photocatalyst. Through X-ray diffraction, UV/Vis absorption, electronic studies, and current-voltage experiments, the effect of the ferromagnetic nickel dopant on the structural, optical, morphological, and electrical properties of the synthesized Zn_1-xNi_xO nanocatalyst was studied. The Ni-doping introduced the structural variation in the Zn_1-xNi_xO nanocatalyst, exhibiting a visible light-triggered optical band gap of 2.96 eV and an excellent current conductivity of 6.3 × 10⁻⁴ Sm⁻¹. Moreover, the synthesis of the Zn_1-xNi_xO catalyst at the nanoscale enhanced its surface energy, showing a robust affinity to stick with the dye and pathogenic microbes. The synergistic effects of all the mentioned features enable our Zn_1-xNi_xO nanocatalyst to efficiently generate and transport reactive oxygen species (ROS) under visible light illumination. Regarding antibacterial action, the as-synthesized Zn_1-xNi_xO nanocatalyst showed 1.7% higher activity against E. coli than that of the drug Ciprofloxacin. In addition, doped nanocatalysts mineralize almost 97% of the Allura red dye in just 80 min with a constant rate value of 0.036 min⁻¹. The impedance study and post-application XRD proposed that our Zn_1-xNi_xO nanocatalyst has good conductivity and structural stability. Applications studies show the unusual photocatalytic activity of as-synthesized Zn_1-xNi_xO nanocatalysts, which makes it a suitable candidate for industrial discharge treatment applications at the expense of solar light.

_{在此，我们报道了铁磁镍掺杂 ZnO (Zn 1-x} Ni _x O) 纳米催化剂的湿化学合成，作为一种新型可见光驱动的光催化剂。_{通过X射线衍射、紫外/可见光吸收、电子研究和电流-电压实验，研究了铁磁镍掺杂剂对合成的Zn 1-x} Ni _x O纳米催化剂的结构、光学、形貌和电学性能的影响。研究过。Ni掺杂引入了Zn _1-x Ni _x O纳米催化剂的结构变化，表现出2.96 eV的可见光触发光学带隙和6.3 × 10 -4 ^Sm -1^{的优异电流电导率}。此外，纳米级Zn _1-x Ni _x O催化剂的合成增强了其表面能，表现出对染料和病原微生物的强大亲和力。所有上述功能的协同效应使我们的 Zn _1-x Ni _x O 纳米催化剂能够在可见光照射下有效产生和传输活性氧 (ROS)。在抗菌作用方面，合成的 Zn _1-x Ni _{x O 纳米催化剂对}大肠杆菌的活性比药物环丙沙星高 1.7%。此外，掺杂纳米催化剂在短短80分钟内矿化了几乎97%的诱惑红染料，恒定速率值为0.036 min ^-1。阻抗研究和应用后X射线衍射表明我们的Zn _1-x Ni _x O纳米催化剂具有良好的导电性和结构稳定性。应用研究表明，合成的 Zn _1-x Ni _x O 纳米催化剂具有不同寻常的光催化活性，这使其成为以牺牲太阳光为代价的工业放电处理应用的合适候选者。