The demand to address the ongoing environmental pollution has motivated the research community to develop novel methodologies for the degradation of the hazaradous pollutants. This study presents the development of an efficient and resilient Ag/AgCl nanocomposite catalyst supported on NiVOx surfaces. The catalyst exhibited exceptional stability and photocatalytic performance in the degradation of methylene blue (MB) dye, as well as the reduction of 4-nitrophenol (4-NP) and Cr(VI) ions in presence of NaBH4. A theoretical study has also been performed to investigate the role of silver in enhancing the stability and reactivity of the nanocomposite. This work demonstrates the potential of Ag/AgCl/NiVOx as a promising material for addressing environmental pollution, offering a stable and effective solution for the degradation of hazardous pollutants.