In this work, the author used the sol-gel derived Ag-doped BaTiO3 nanoparticles to show their potential applications in the photocatalytic degradation of organic pollutants.

Two questions are generated after reading this paper: 1. How do the authors obtain the electronegativity of Ag-BTO is 5.02 eV? I didn't find any evidence in the ref. 38. 2. The authors calculated the diffusion coefficient of Li+ via the CV measurement. What is the purpose? More details should be demonstrated.