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Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe 2 O 3 under simulated solar light irradiation
Author(s) -
Rajamohan Satheesh,
Kumaravel Vignesh,
AbdelWahab Ahmed,
Ayyadurai Suganthi,
Muthuramalingam Rajarajan
Publication year - 2018
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23122
Subject(s) - photocatalysis , materials science , bismuth , irradiation , doping , visible spectrum , nuclear chemistry , precipitation , bet theory , analytical chemistry (journal) , catalysis , chemistry , metallurgy , optoelectronics , environmental chemistry , meteorology , organic chemistry , physics , nuclear physics
In the present investigation, silver decorated and bismuth doped α‐Fe 2 O 3 (Ag/Bi‐Fe 2 O 3 ) was successfully synthesized using the co‐precipitation method. The size, shape, surface area, and magnetic properties were characterized by XRD, FE‐SEM, EDX, BET, VSM, and UV‐Vis‐DRS techniques. The synthesized nanoparticles were used as a photocatalyst for the degradation of rose bengal (RB) dye under simulated solar light irradiation. Ag/Bi‐Fe 2 O 3 showed the better photocatalytic activity of 97.11 % within 135 min when compared to Bi‐Fe 2 O 3 and Ag‐Fe 2 O 3 . The superior photo‐catalytic activity of Ag/Bi‐Fe 2 O 3 was mainly ascribed to visible light absorption and the suppression of photo‐generated electron‐hole recombination. Ag/Bi‐Fe 2 O 3 was found to be a stable photocatalyst during recycling experiments. Besides, the magnetic property of Ag/Bi‐Fe 2 O 3 makes it an ideal candidate for separation and recovery during recycling.