US 12,168,612 B2
Doped tin oxide particles and doped tin oxide shells for core-shell particles
T. Randall Lee, Houston, TX (US); Riddhiman Medhi, Houston, TX (US); Sang Ho Lee, Houston, TX (US); Chien-Hung Li, Kaohsiung (TW); Allan J. Jacobson, Houston, TX (US); and Tai-Chou Lee, Taoyuan (TW)
Assigned to University of Houston System, Houston, TX (US); and National Central University, Taoyuan (TW)
Appl. No. 17/425,783
Filed by University of Houston System, Houston, TX (US); and National Central University, Taoyuan (TW)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016062
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/160380, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/799,432, filed on Jan. 31, 2019.
Prior Publication US 2022/0169525 A1, Jun. 2, 2022
Int. Cl. C01G 19/02 (2006.01); B01J 23/14 (2006.01); B01J 23/18 (2006.01); B01J 23/52 (2006.01); B01J 35/00 (2024.01); B01J 35/39 (2024.01); B01J 37/02 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01)
CPC C01G 19/02 (2013.01) [B01J 23/14 (2013.01); B01J 23/18 (2013.01); B01J 23/52 (2013.01); B01J 35/19 (2024.01); B01J 35/39 (2024.01); B01J 37/0213 (2013.01); B01J 37/04 (2013.01); B01J 37/08 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2002/84 (2013.01); C01P 2002/85 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/51 (2013.01); C01P 2004/64 (2013.01); C01P 2006/60 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for preparing doped tin oxide material, comprising:
preparing a precursor solution, wherein the precursor solution consists of water, or wherein the precursor solution comprises core-shell particles, wherein the core-shell particles are core-shell nanoparticles or core-shell microparticles;
heating the precursor solution to at least 60° C.;
adding a sodium stannate solution to the precursor solution to form a mixture comprising tin oxide material;
preparing a doping solution, wherein the doping solution comprises an antimonate salt or a zinc salt;
adding a specific amount of the doping solution to the mixture comprising tin oxide material to form a reaction mixture;
heating the reaction mixture to at least 150° C. for a period of time; and
collecting doped tin oxide material from the reaction mixture, wherein the doped tin oxide material comprises stand-alone tin oxide particles or tin oxide core-shell particles, and wherein the doped tin oxide material further comprises antimony or zinc.