Papers by Author: Jian Hua Gao

Abstract: A novel and thermally stable hierarchically porous yttrium doped zirconia material with crystallized framework has been synthesized in a facile process. XRD, nitrogen adsorption analysis, FESEM, FETEM, were used for the structural characterizations. This novel hierarchically porous zirconia shows a well-defined ordered macroporous structure, a broad distributed mesoviods, and a very uniform mesoporous pore-distribution. Small amount of yttrium can be helpful to increase the thermal stability of the prepared hierarchically porous zirconium oxide.

Abstract: Titanium based anodes are widely used in chlori-alkali industry. Two kinds of titanium based anodes were characterized by using XRD and SEM. The test results of their electrocatalytic properties showed that the nanosize crystals have great effect on the anode’s polarization behaviors and accelerated stability life. The anode with higher content of Ta possessed a smaller crystal size and better electrocatalys

Abstract: TiO2 is a promising photocatalyst due to its excellent photocatalytic activity, physical and chemical stabilities. Plasma spraying technology is good way to prepare for TiO2 coating. The effect of spraying parameters on photocatalytic performance was studied. The results showed that both the amount of unmelted particles and the porosity of as-sprayed TiO2 coatings increased with the increasing of Ar gas flow rate. And the external bias could improve TiO2 coating’s photocatalytical performance. The improvement degree is closed related its grain size and porosity.