材料科学
煅烧
复合数
X射线光电子能谱
二氧化锡
纳米颗粒
金红石
兴奋剂
电阻率和电导率
锑
傅里叶变换红外光谱
锡
带隙
纳米技术
粒度
化学工程
分析化学(期刊)
复合材料
冶金
化学
物理
有机化学
光电子学
催化作用
工程类
量子力学
作者
Xue Li,Jianhua Qian,Junhua Li,Ke Tang
标识
DOI:10.1142/s1793604719510056
摘要
Antimony-doped tin dioxide (ATO)-coated TiO 2 (TiO 2 @ATO) composite was synthesized by a polymeric precursor method with lactic acid as the chelating agent. The structural and morphological characterizations of the as-fabricatied TiO 2 @ATO composite were investigated by XRD, FTIR, SEM, TEM and XPS. The resistivity was also examined by electrical resistance measurements. The theoretical calculations were introduced for elucidating the change of bandgap from the microscopic level. The results showed that the lowest resistivity of TiO 2 @ATO composite they could be achieved was 1.69 [Formula: see text]. TiO 2 @ATO composite possessed a core–shell structure with the ATO shell thickness of 13–16[Formula: see text]nm. The as-prepared ATO nanoparticles were in rutile phase and with 4.3–7.0[Formula: see text]nm in diameter (calcinated at 550 ∘ C). The ATO grain growth during the calcination process could be viewed as consisting of two stages: the activation energies were calculated to be [Formula: see text][Formula: see text]kJ/mol and [Formula: see text][Formula: see text]kJ/mol, respectively.
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