Preparation, characterization and photocatalytic activity studies of transition metal ion doped K2Ta2O6

被引：7
|
作者：
Angineni, Rani [1 ]
Venkataswamy, Perala [1 ]
Ramaswamy, Kadari [1 ,2 ]
Raj, Shiva [1 ]
Veldurthi, Naveen Kumar [3 ]
Vithal, Muga [1 ]
机构：
[1] Osmania Univ, Dept Chem, Hyderabad 500007, India
[2] HCL PO, Ctr Mat Elect Technol C MET, Hyderabad 500051, India
[3] Natl Inst Technol, Dept Chem, Jamshedpur 831014, Bihar, India
来源：
POLYHEDRON | 2022年 / 214卷
关键词：
K2Ta2O6; Cation doping; Visible light absorption; Surface hydroxyl species; Methylene blue; HIGH-PERFORMANCE; LIGHT; DEGRADATION; PYROCHLORES; COMPOSITE; H-2; SUBSTITUTION; OXIDATION; SILVER; CO2+;
D O I：
10.1016/j.poly.2021.115620
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Cation doping is one of the simplest methods to improve the photocatalytic activity. Herein, we attempted to improve the photocatalytic activity of K2Ta2O6, by doping with M2+ (M = Mn, Co and Ni) ions. The M2+-doped K2Ta2O6 were synthesized by facile ion-exchange method and characterized by techniques like XRD, SEM-EDS, TEM-SAED, N-2 adsorption-desorption, FT-IR, XPS, UV-Vis DRS and PL. The photocatalytic activity of these catalysts was studied for the degradation of methylene blue (MB) dye under visible light irradiation. All the M2+-doped KTO exhibited improved photocatalytic activity towards the degradation of MB. Among these catalysts, Mn-K2Ta2O6 has shown 93% degradation efficiency in 180 min of irradiation. Scavenger experiments were performed to unravel the degradation mechanism. The stability of Mn-K2Ta2O6 and its photocatalysis mechanism were also presented.
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页数：9
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