Photoluminescence, thermoluminescence and photocatalytic studies of sonochemical synthesis of Bi 2 Zr 2 O 7 :Sm 3+ nanom
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Photoluminescence, thermoluminescence and photocatalytic studies of sonochemical synthesis of Bi2Zr2O7:Sm3+ nanomaterials A. S. Rajashekharaiah1,2 · Y. S. Vidya3 · K. S. Anantharaju4 · G. P. Darshan5 · P. Lalitha6 · S. C. Sharma7,8 · H. Nagabhushana1 Received: 18 January 2020 / Accepted: 29 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Novel Bi2Zr2O7:Sm3+ (1–9 mol%) nanoparticles (NPs) were synthesized via sonochemical method using Cetyltrimethylammonium bromide (CTAB) as a surfactant. The effects of primary synthesis conditions (pH, growth time, surfactant and dopant concentration) on the surface morphology have been reported for the first time. Photoluminescence (PL) studies (λex = 465 nm), CIE and CCT values revealed that the present nanophosphor could meet the needs of illumination devices and also for domestic appliances. Thermoluminescence studies show a well-resolved glow peak observed at ~ 182 °C along with a shoulder peak at ~ 116 °C be a good candidate for radiation dosimetric applications. This gamma dosimeter can be applied in the routine TL Dosimetry badge system among the gamma radiation workers involved in nuclear fuel cycle operations. Photocatalytic performance of at 5 mol% was experimented in the decolorization of Methylene Blue (MB) under natural Sunlight irradiation.
1 Introduction A2B2O7 (A: Rare-earth (RE) ion and B: transition metal ion) general formula indicated Pyrochlore-based ceramic matrices [1–3]. Because of their versatile application, these materials are highly recommended as crystalline host matrices for nuclear waste, as a phosphor material on doping with appropriate RE/transition metal ions [4–6]. These materials also show better ferroelectric properties owing to its unique Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10854-020-04126-8) contains supplementary material, which is available to authorized users.
structure [7]. Bismuth (III) and Zirconium Oxides are similar in exhibiting several polymorphic reforms. Due to their photoresponse in the visible-light region, bismuth-containing semiconductors are the good photocatalysts [10–12]. Zhu et al., studied the visible-light photocatalytic degradation of Rhodamine B by using Bi2WO6, Long et al., discussed the visible-light photocatalytic studies of Bi2O2CO3 [8, 9]. Lanthanide ions are used as components in high-technology devices including smart phones, digital cameras, computer hard disks, fluorescent and light-emitting-diode (LED) lights, flat screen televisions, computer monitors and electronic displays. Lanthanide/transition metal ion doped Pyrochlore-based ceramic matrices as vital candidates for 4
* S. C. Sharma [email protected]
Department of Chemistry, Dayananda Sagar College of Engineering, Shavige Malleshwara Hills, Kumaraswamy layout, Bengaluru 560078, India
5
* H. Nagabhushana [email protected]
Department of Physics, Acharya Institute of Graduate Studies, Bengaluru 560 107, India
6
Prof.
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