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The enhanced photocatalytic activity of Na 0.9 Mg 0.45 Ti 3.55 O 8 co‐loaded with silver and platinum
Author(s) -
Wang JingZhou,
Guo ZeQing,
Zhou JianPing,
Lei YuXi,
Shi XuanXuan,
Hassan Qadeer Ul
Publication year - 2017
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3901
Subject(s) - photocatalysis , rhodamine b , materials science , schottky barrier , transmission electron microscopy , platinum , scanning electron microscope , noble metal , band bending , analytical chemistry (journal) , methylene blue , nanotechnology , catalysis , optoelectronics , chemistry , metal , metallurgy , composite material , diode , biochemistry , chromatography
Summary Noble metals Ag and Pt were loaded on Na 0.9 Mg 0.45 Ti 3.55 O 8 (NMTO) by chemical bath deposition method, which was synthesized firstly in our recent work. The scanning electron microscopy and transmission electron microscopy results show that Ag and Pt nanoparticles were distributed on the different surfaces of NMTO. NMTO loaded with Ag and Pt can efficiently enhance the separation of photogenerated electron‐hole pairs, exhibiting much higher photodegradative ability for methylene blue and rhodamine B than the pure NMTO. The best weight concentrations of Ag and Pt are 9.00% and 3.70%, respectively. The electrostatic field is built in the Schottky barrier between NMTO and noble metals, leading to the energy band bending. Then, photogenerated electrons and holes are efficiently separated to enhance the photocatalytic activity.