Event Title

Effect of the pH on the Zeta Potential in the Metal Organic Framework Ni3(HITP)2

Poster Number

005

Faculty Mentor

Fatima Amir, Ph.D.

College

College of Arts and Sciences

Department

Chemistry, Physics, and Geology

Location

Rutledge

Start Date

20-4-2018 12:00 PM

End Date

20-4-2018 2:00 PM

Description

Electrophoretic deposition (EPD) had its first practical use in 1933, and although the basic phenomena involved in EPD are well known and have been the subject of extensive theoretical and experimental research, EPD of metal organic-frameworks (MOFs) is still unknown. One of the key elements to a successful EPD is to find a systematic approach to making suspensions in which the particles have a high zeta potential, while keeping the ionic conductivity of the suspensions low. The zeta potential plays a role in the stabilization of the suspension, and simply changing the pH of the suspension will affect the zeta potential values. Herein, we study the effect of the pH on the zeta potential of the MOF Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 (Ni3(HITP)2) suspension. The stability of Ni3(HITP)2 from its suspension in isopropanol and water was maximum at pH 7, at which negative zeta potential was maximum. Electrophoretic deposition, which is directly dependent on the zeta potential and determined by the ionic conductivity of the suspension, was the best at neutral pH values. The morphology and structure of the deposited layers were also characterized using SEM and XRD.

Course Assignment

PHYS 351 – Amir

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Apr 20th, 12:00 PM Apr 20th, 2:00 PM

Effect of the pH on the Zeta Potential in the Metal Organic Framework Ni3(HITP)2

Rutledge

Electrophoretic deposition (EPD) had its first practical use in 1933, and although the basic phenomena involved in EPD are well known and have been the subject of extensive theoretical and experimental research, EPD of metal organic-frameworks (MOFs) is still unknown. One of the key elements to a successful EPD is to find a systematic approach to making suspensions in which the particles have a high zeta potential, while keeping the ionic conductivity of the suspensions low. The zeta potential plays a role in the stabilization of the suspension, and simply changing the pH of the suspension will affect the zeta potential values. Herein, we study the effect of the pH on the zeta potential of the MOF Ni3(2,3,6,7,10,11-hexaiminotriphenylene)2 (Ni3(HITP)2) suspension. The stability of Ni3(HITP)2 from its suspension in isopropanol and water was maximum at pH 7, at which negative zeta potential was maximum. Electrophoretic deposition, which is directly dependent on the zeta potential and determined by the ionic conductivity of the suspension, was the best at neutral pH values. The morphology and structure of the deposited layers were also characterized using SEM and XRD.