Huang Hangjiu group uses institute of machinery of intelligence of Hefei of academy of science of material of Hefei of the Chinese Academy of Sciences classification oxide of bimetallic of poriferous cerium zirconium accept rice material, the difference of adsorptive to ion of different heavy metal rate realized the tall sensitivity of minute contaminant Pb(II) , select-high sex to detect.
In current heavy metal ion in detecting, electrochemistry method already got applied extensively. But because use dissolve ending of the dog days to install a law to detect heavy metal is ionic (when be like Cu(II) , Hg(II) , Pb(II) , Cd(II) , Zn(II)) , different heavy metal can form the compound between the metal between ion, compete in the adsorptive generation of got-up electrode surface in rich market course, make thereby detect at the same time the interference with the relatively serious generation when a variety of heavy metal are ionic, cannot detect well and truly some kind of specific heavy metal is ionic. Accordingly, search can come true to be reached optionally accurate detect the method of ion of some kind of specific heavy metal makes demand.
The SEM of material of rice of A)Ce-Zr oxide accept pursues; The TEM of material of rice of B)Ce-Zr oxide accept pursues; The suction of material of rice of C) Ce-Zr oxide accept in N2 distributinging graph of desorption curve and aperture; Got-up electrode of D) Ce-Zr oxide detects ending of the dog days of Pb(II) zincous dissolve brings a figure; E) detects the sensitivity of ion of a few kinds of different heavy metal and detect be restricted to compare a figure; The chart of high resolution XPS after Pb(II) of adsorption of material of rice of F)Ce-Zr oxide accept pursues; The research of the adsorptive rate with ionic to different heavy metal material of rice of G) Ce-Zr oxide accept.
Huang Hangjiu group is used classification oxide of bimetallic of poriferous cerium zirconium accept rice ball (Ce-Zr) regards electrode as material, have the aid of its ionic to heavy metal sorption, traverse the zincous dissolve ending of the dog days that ion of metal of sensitive interface counterpoise detects installs the electrochemistry that ball of rice of Ce-Zr oxide accept builds behavior. Study the result makes clear, the Gao Lingmin that analyses a method to be able to realize pair of Pb(II) , select-high sex and tall interference rejection detect. In the meantime, photoelectron of ray of researcher union X- can chart (XPS) technology and much adsorptive experimentation, studied ball of rice of Ce-Zr oxide accept detects optionally deep in detail the likelihood of Pb(II) mechanism. Study the result makes clear, the rate in adsorption of surface of ball of rice of Ce-Zr oxide accept has ion of different heavy metal very big difference, in adsorption the (inside very short period of time
Relevant research achievement already published in Sensors And Actuators B: On Chemical. This research got fund of dean of academy of group of across of innovation of national science foundation, Chinese Academy of Sciences, Hefei wait aid financially.