title: A hybrid mesoporous material functionalized by 1,8-naphthalimide-base receptor and the application as chemosensor and absorbent for Hg2+ in water.
abstract: A novel hybrid material (SBA-P1) is prepared through the functionalization of mesoporous silica (SBA-15) with a 1,8-naphthalimide-based dye by sol-gel reaction. The characterization results of elemental analysis (EA), X-ray powder diffractometer (XRD) and spectroscopic methods demonstrate the fluorescence dye P1 is successfully grafted onto the inner surface of SBA-15 and the organized structure is preserved. SBA-P1 can detect Hg(2+) with high selectivity to Cu(2+), Zn(2+), Cd(2+), Pb(2+), Mn(2+), Ni(2+), Co(2+), Ag(+), Cr(3+), and Mg(2+), Ca(2+), Li(+), Na(+), K(+) in water and sensitivity to environmentally relevant mercury in complex natural samples. The quenching fluorescence detection is also reversible by treating with EDTA/base. Furthermore, its fluorescence intensity keeps stable in the physiologically relevant pH range. The extraction ability of SBA-P1 is also estimated by inductively coupled plasma source mass spectrometer (ICP), showing that approximately 90% of the Hg(2+) ion is extracted. These results imply that the hybrid material has potential application for sensing and removing of Hg(2+) ions in waste water and working as toxicide for acute mercury poisoning.
authors.affiliation: State Key Laboratory of Fine Chemicals, Dalian University of Technology, 158 Zhongshan Road, Dalian 116012, China.
authors.forename: Qingtao
authors.initials: Q
authors.lastname: Meng
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Zhang
authors.forename: Cheng
authors.initials: C
authors.lastname: He
authors.forename: Peng
authors.initials: P
authors.lastname: Zhou
authors.forename: Weiping
authors.initials: W
authors.lastname: Su
authors.forename: Chunying
authors.initials: C
authors.lastname: Duan
mesh_terms: D000042:Absorption; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D005456:Fluorescent Dyes / Q000737:chemistry; D008628:Mercury / Q000032:analysis* / Q000737:chemistry*; D053644:Naphthalimides / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D053644:Naphthalimides; D014874:Water Pollutants, Chemical; D014867:Water; D012822:Silicon Dioxide; D008628:Mercury