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<p><strong>Synthesis, characterization and photocatalytic dye degradation studies of novel defect pyrochlore, KHf<sub>0.5</sub>Te<sub>1.5</sub>O<sub>6</sub></strong></p>

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Title Statement <p><strong>Synthesis, characterization and photocatalytic dye degradation studies of novel defect pyrochlore, KHf<sub>0.5</sub>Te<sub>1.5</sub>O<sub>6</sub></strong></p>
 
Added Entry - Uncontrolled Name M, Sudheera ; RVR & JC College of Engineering, Chowdavaram, Guntur-522 019, Andhra Pradesh, India
G, Ravinder ; Department of Chemistry Osmania University Hyderabad-500 007 Telangana
G, Ravi ; Department of Chemistry Osmania University Hyderabad-500 007 Telangana
P, Venkataswamy ; Department of Chemistry Osmania University Hyderabad-500 007 Telangana
K, Vaishnavi ; Department of Chemistry Osmania University Hyderabad-500 007 Telangana
N, Chittibabu ; Department of Chemical Engineering, Andhra University, Visakhapatnam - 530 003, India
M, Vithal ; Department of Chemistry Osmania University Hyderabad-500 007 Telangana
The Science and Engineering Research Board (SERB) (Grant No. EMR/2016/001533), Department of Science and Technology (DST), India; University Grants Commossion (UGC) [F.18–1/2011(BSR)], New Delhi, India.
 
Uncontrolled Index Term Catalysis; Spectroscopy
Powder XRD, Bandgap Energy, Photocatalysis, Scavengers test, OH● radicals
 
Summary, etc. <p>We report the solid-state synthesis of KHf<sub>0.5</sub>Te<sub>1.5</sub>O<sub>6</sub> (KHTO), its characterization and employment as photocatalyst for methylene blue and methyl violet degradations in aqueous solution. The material was subjected to X-ray Diffraction (XRD), Field emission-scanning electron microscopy (FE-SEM), Energy dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), UV-vis diffuse reflectance spectroscopy (UV-vis DRS), N<sub>2</sub> adsorption/desorption and XPS measurements. The material was crystallized in a cubic lattice with the   space group. The bandgap energy of the KHTO is 2.60 eV. The photocatalytic methylene blue (MB) and methyl violet (MV) dyes degradation efficiency of KHTO was investigated under the visible light irradiation. The mechanistic dye degradation pathway of MB was studied. The radical quenching experiments reveal that the short-lived species O<sub>2</sub><sup>●-</sup>, OH<sup>●</sup>, and h<sup>+</sup> actively participate in the degradation of MV and MB dyes. An additional terephthalic acid experiment was carried out to establish the participation of OH<sup>●</sup> radicals in the dye degradation process. The stability and reusability of the KHTO catalyst were also studied.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-10-06 11:31:09
 
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http://op.niscair.res.in/index.php/IJCA/article/view/30553
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 59, ##issue.no## 8 (2020): INDIAN JOURNAL OF CHEMISTRY- SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/30553/465493880
http://op.niscair.res.in/index.php/IJCA/article/download/30553/465498253
http://op.niscair.res.in/index.php/IJCA/article/download/30553/465498254
 
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