Highly selective colorimetric detection and preconcentration of Bi(III) ions by dithizone complexes anchored onto mesoporous TiO2

Mohd Faisal; Adel A Ismail; Farid A Harraz; Houcine Bouzid; Saleh A Al-Sayari; Ali Al-Hajry

doi:10.1186/1556-276X-9-62

Highly selective colorimetric detection and preconcentration of Bi(III) ions by dithizone complexes anchored onto mesoporous TiO2

Nanoscale Res Lett. 2014 Feb 6;9(1):62. doi: 10.1186/1556-276X-9-62.

Authors

Mohd Faisal, Adel A Ismail¹, Farid A Harraz, Houcine Bouzid, Saleh A Al-Sayari, Ali Al-Hajry

Affiliation

¹ Promising Centre for Sensors and Electronic Devices (PCSED), Advanced Materials and Nano-Research Centre, Najran University, P,O, Box 1988, Najran 11001, Saudi Arabia. adelali141@yahoo.com.

Abstract

We successfully developed a single-step detection and removal unit for Bi(III) ions based on dithizone (DZ) anchored on mesoporous TiO2 with rapid colorometric response and high selectivity for the first time. [(DZ)3-Bi] complex is easily separated and collected by mesoporous TiO2 as adsorbent and preconcentrator without any color change of the produced complex onto the surface of mesoporous TiO2 (TiO2-[(DZ)3-Bi]) at different Bi(III) concentrations. This is because highly potent mesoporous TiO2 architecture provides proficient channeling or movement of Bi(III) ions for efficient binding of metal ion, and the simultaneous excellent adsorbing nature of mesoporous TiO2 provides an extra plane for the removal of metal ions.