The utilization of photo-activated semiconductors has driven photocatalysis as a promising avenue for environmentally sustainable wastewater treatmentQuery.In this study, nanostructures of lithium zinc borate (LiZnBO3: LZB) were synthesized via a hydrothermal process at varying temperatures (120, 160, and 200°C), with an exhaustive examination of their structural, morphol., compositional, and optical attributes.The increase in temperature is hypothesized to induce the formation of surface defects and oxygen vacancies, thereby serving as active sites for surface reactions.Morphol. anal. revealed the presence of LZB nanoparticles at 120°C, transitioning to rods combined with nanoflakes at 160°C, and eventually evolving into nanosheets at 200°C.Addnl., a noteworthy bandgap adjustment from 3.239 to 3.051 eV was observed as the synthesis temperature increased from 120 to 200°C.The reduction in photoluminescence intensity suggests enhanced charge separation, thereby augmenting the photocatalytic efficacy of the LZB-200 nanostructure.Notably, LZB nanostructures exhibit complementary absorption properties owing to distinct bandgaps, facilitating efficient utilization of solar irradiationPhotocatalytic evaluations revealed the superior performance of LZB-200 in degrading potassium Bu xanthate (PBX), achieving a remarkable 69.34% efficiency over a 140-min exposure to solar light, compared to the modest 35.78% and 47.57% degradation rates achieved by LZB-120 and LZB-160, resp.The effective degradation of PBX underscores the promising applications of LZB under solar light irradiationIn summary, this study underscores the potential of metal borates in advancing photocatalytic applications.