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Tailoring the luminescence and photocatalytic activity of KMn 4 (PO 4 ) 3 by Anions (N 3‐ and S 2‐ ) doping
Author(s) -
Chandiri Sudhakar Reddy,
Gundeboina Ravi,
Perala Venkataswamy,
Kurra Sreenu,
Baig Uzma,
Muga Vithal
Publication year - 2017
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.5315
Subject(s) - photocatalysis , photodegradation , chromaticity , photoluminescence , photochemistry , luminescence , doping , visible spectrum , chemistry , methylene blue , materials science , inorganic chemistry , catalysis , organic chemistry , optoelectronics , physics , optics
BACKGROUND Phosphates of bivalent, trivalent, or quadrivalent transition metal cations with alkali or alkaline earth ions are promising materials in the field of materials science and technology. Anions‐doped phosphate materials have attracted considerable attention due to their potential applications in environmental remediation by degrading organic pollutants to less harmful byproducts. Thus, in the present work nitrogen/sulphur was doped into KMn 4 (PO 4 ) 3 (KMnPO) to improve its visible light photocatalytic activity. RESULT S or N‐doped KMn 4 (PO 4 ) 3 (KMnPOS or KMnPON) were prepared by a solid state method. The photocatalytic activities of these materials were evaluated by photodegradation of methylene blue, methyl violet and 4‐chlorophenol. Quenching studies were carried out to identify the reactive species during the photodegradation of dyes. The photoluminescence properties of phosphate materials were investigated, and the color coordinates were also calculated using CIE 1931 chromaticity. CONCLUSION The color coordinates obtained give the information that KMnPO, KMnPON and KMnPOS phosphors were suitable for blue light LEDs. KMnPOS is a novel highly visible light responsive photocatalyst and can be reused at least four times efficiently. The higher photocatalytic activity of KMnPOS can be attributed to its lower electron–hole recombination rate and generation of more • OH radicals during photoreaction. © 2017 Society of Chemical Industry