Alkaline earth metal doped tin oxide as a novel oxygen storage material. (September 2015)

• Record Type: Journal Article
• Authors: Dong, Qiang; Yin, Shu; Yoshida, Mizuki; Wu, Xiaoyong; Liu, Bin; Miura, Akira; Takei, Takahiro; Kumada, Nobuhiro; Sato, Tsugio
• Is Part Of: Materials research bulletin. Volume 69(2015:Sep.)
• Page Start: 116
• Page End: 119
• Publication Date: 2015-09
• Subjects: Alkaline earth metal -- Tin oxide -- Hollow nanospheres -- Solvothermal -- Oxygen storage; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2014.11.018
• Languages: English
• ISSNs: 0025-5408

Abstract

Abstract: Alkaline earth metal doped tin oxide (SnO2 ) hollow nanospheres with a diameter of 50 nm have been synthesized successfully via a facial solvothermal route in a very simple system composed of only ethanol, acetic acid, SnCl4 ·5H2 O and A(NO3 )2 · x H2 O (A = Mg, Ca, Sr, Ba). The synthesized undoped SnO2 and A-doped SnO2 hollow nanospheres were characterized by the oxygen storage capacity (OSC), X-ray diffraction, transmission electron microscopy and the Brunauer–Emmet–Teller (BET) technique. The OSC values of all samples were measured using thermogravimetric-differential thermal analysis. The incorporation of alkaline earth metal ion into tin oxide greatly enhanced the thermal stability and OSC. Especially, Ba-doped SnO2 hollow nanospheres calcined at 1000 °C for 20 h with a BET surface area of 61 m 2 g −1 exhibited the considerably high OSC of 457 μmol-O g −1 and good thermal stability. Alkaline earth metal doped tin oxide has the potential to be a novel oxygen storage material.