en Research Paper Research Paper <span style="font-size:11pt"><span style="line-height:200%"><span calibri="" style="font-family:"><span new="" roman="" style="font-family:" times="">Perovskite materials are widely studied for their super-conducting, magnetic, catalytic and electro-optic properties. Among them, barium stannate (BaSnO₃), finds applications in dielectric and optically active devices, thermally stable capacitors, humidity and gas sensors. In this study, BaSnO₃was synthesized by chemical and greener methods and comparative analyses has been performed on their electrochemical, third order nonlinear, dye deactivation and bacterial suppression properties. Decreased crystallite size was realized for the green synthesized BaSnO₃. Energy band gaps were 3.23 and 3.04 eV for BaSnO₃ synthesized by normal and greener approach, respectively. The extract mediated sample exhibited increased specific capacitance value. Photocatalytic degradation efficiencies were 78.4% and 89.7%, respectively for BaSnO₃ synthesized by normal and greener approach against methyl violet after 90 min of UV light irradiation. Enhanced nonlinear optical parameters were obtained for the extract mediated BaSnO₃. Excellent antibacterial efficacy against <i>Proteus vulgaris</i> bacteria was realized for the greener BaSnO₃ NPs thanks to the domination of phytochemicals of <i>M. olifera</i> leaf extract.</span></span></span></span><br> &nbsp; BaSnO3 perovskite,bacteria suppression,green synthesis,specific capacitance 129 141 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-4649-1&slc_lang=en&sid=1 Murugesan Suganya suganyavaijayanthi@gmail.com 1800319475328460019332 1800319475328460019332 No Assistant ProfessorPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India Chembian Kayathiri Kayathiri112@gmail.com 1800319475328460019333 1800319475328460019333 No Research ScholarPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India Rajavelu Balu arbalu757@gmail.com 1800319475328460019334 1800319475328460019334 Yes Assistant ProfessorPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India Gandhiraj Vinitha gvinitha162@gmail.com 1800319475328460019335 1800319475328460019335 No Chair of PhysicsVellore Institute of Technology Zion Delci delcikaruna12@gmail.com 1800319475328460019336 1800319475328460019336 No Assistant ProfessorDwaraka Doss Goverdhan Doss Vaishnav College Saravanan Chitra Devi chitradevi161992@gmail.com 1800319475328460019337 1800319475328460019337 No Research ScholarPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India Kaliyamoorthy Devendran devendran2187@gmail.com 1800319475328460019338 1800319475328460019338 No Research ScholarPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India Mathiyalagan SriramRaj Sriramrajphysics@gmail.com 1800319475328460019339 1800319475328460019339 No Research ScholarPG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasan University, Tiruchirappalli), Poondi, Tamilnadu, India