A novel aqueous co-precipitation process to prepare indium tin oxide nanopowders

作者：Xu, Baoqiang; Yang, Bin^*; Guo, Yaqin; Liu, Dachun; Yu, Qingchun; Wei, Sen

来源：Journal of Alloys and Compounds, 2011, 509(13): 4538-4542.

DOI：10.1016/j.jallcom.2011.01.083

• ITO powders
• Aqueous co-precipitation process
• Nanoparticles
• XRD

In this paper, a novel aqueous co-precipitation process for preparing ITO (indium tin oxide) nanopowders was investigated. In this process, the solutions of In3+-Sn4+ ions and 25% NH3 center dot H2O were simultaneously added into the solution of (NR4)(2)SO4-NH3-H2O, NH4Cl-NH3 center dot H2O and NH3 center dot H2O to make different reaction solutions. When (NH4)(2)SO4-NH3 center dot H2O solution was used as the primary reaction liquid with pH value in the range of 6.5-7.0, spherical ITO particles with uniform particle size (10-20 nm), low agglomeration and large specific surface were obtained. The ITO particles were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and energy-dispersive spectrometer (EDS). The EDS analysis indicated that the distribution of In and Sn elements in the ITO powders was uniform and their mass ratio was close to 9:1, which would result from the co-precipitation process that provided a stable chemical circumstance for In3+ and Sn4+ to be co-precipitated.

• 出版日期2011-3-31
• 单位重庆大学; 昆明理工大学