Abstract
N-doped NaTaO3 catalysts were synthesized via a sol–gel method followed by a subsequent calcination process under NH3 atmosphere. The as prepared samples were characterized by XPS, XRD, UV–Vis DRS, and BET analyses. All XRD peaks of the sample calcined at 900 °C matched with pure perovskite NaTaO3 while peaks of TaON and Na2Ta4O11 were found for that calcined at 1,000 °C. The DRS of samples shown cutoff edge has red shifted, from 315 nm of pure to 391 nm of N-doped NaTaO3. N-doping helps to narrow the band gap, and the prepared sample was visible light sensitive. The XPS spectrum of Ta4p3&N1s shown two new peaks at 398.3 and 401.4 eV appear in the N-doped sample corresponding to Ta–N bonds and adsorption nitride, respectively. Photocatalytic activity of the catalysts was evaluated using Rhodamine B dye. The result demonstrated that the sample calcined under NH3 had a higher photocatalytic activity than that of P25 under visible light. The NaTaO3/TaON heterojunction played an important role on promoting photoactivity.
References
Hameed BH (2009) J Hazard Mater 162:939–944
Bae E, Choi W (2003) Environ Sci Technol 37:147–152
Kato H, Kudo A (1999) Chem Lett 28:1207–1208
Xu TG, Zhao X, Zhu YF (2006) J Phys Chem B 110:25825–25832
Kato H, Kudo A (2001) J Phys Chem B 105:4285–4292
Laguta VV, Glinchuk MD, Bykov IP, Cremona A, Galinetto P, Giulotto E, Jastrabik L, Rosa J (2003) J Appl Phys 93:6056–6064
Kato H, Asakura K, Kudo A (2003) J Am Chem Soc 125:3082–3089
Porob DG, Maggard PA (2006) J Solid State Chem 179:1727–1732
Wei W, Dai Y, Jin H, Huang BB (2009) J Phys D Appl Phys 42:401–408
Martha S, Reddy KH, Parida KM, Satapathy PK (2012) Int J Hydrogen Energy 37:115–124
Shahed UM, William B (2002) Science 297:2243–2245
Umebayashi T, Yamaki T, Itoh H (2002) Appl Phys Lett 81:454–456
Zhang Q, Gao L (2004) Langmuir 20:9821–9827
Murase T, Irie H, Hashimoto K (2004) J Phys Chem B 108:15803–15807
Asahi R, Morikawa T, Aoki K, Taga Y (2001) Science 293:269–271
Irie H, Watanabe Y, Hashimoto K (2003) J Phys Chem B 107:5483–5486
Fu H, Zhang L, Yao W, Zhu Y (2006) Appl Catal B Environ 66:100–110
Hara M, Chiba E, Ishikawa A, Takata T, Kondo JN, Domen K (2003) J Phys Chem B 107:13441–13445
Yu T, Tan X, Zhao L (2010) J Hazard Mater 176:829–835
Zhang ZY, Shao CL (2013) Nanoscale 5:606–618
Fu HB, Zhang SC, Zhang LW, Zhu YF (2008) Mater Res Bull 43:864–872
Sun M, Li DZ (2009) J Phys Chem C 113:14916–14921
Acknowledgments
This research was supported by the National Natural Science Foundation of China Grants: 51372127, 50102086, 50990303, 50872070, as well as Open project for the State Key Laboratory of High Performance Ceramics and Ultrastructure (SICCAS, SKL201211SIC).
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Qi, L., Li, X. N-doped NaTaO3: novel visible-light-driven photocatalysts synthesised by a sol–gel method. J Sol-Gel Sci Technol 69, 625–629 (2014). https://doi.org/10.1007/s10971-013-3264-6
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DOI: https://doi.org/10.1007/s10971-013-3264-6