Enhanced photo catalytic performance of nickel doped bismuth selenide under visible light irradiation

We have reported photo catalytic properties of bismuth selenide (Bi2Se3) and nickel doped (5 mol%) bismuth selenide (Bi2Se3) samples on two different dyes, congo red (CR) and rose bengal (RB) under visible-light irradiation without and with hydrogen peroxide. A maximum rate constant of 0.0365 min−1 for RB dye has been observed for the nickel doped bismuth selenide catalyst in presence of hydrogen peroxide. A possible mechanism for improvement of photo catalytic performance has been explained based on band structure.