Nanostructured GaOOH modified with reactive yellow, red and blue water-soluble dyes

W Taylor Adams,Nelson R Vinueza,Oleksandr Romanyuk,Ivan Gordeev,Tania Paskova,Albena Ivanisevic

doi:10.1063/1.5080353

Abstract

Water soluble reactive dyes are used to modify nanostructured GaOOH. The resulting particles showed excellent stability in water solutions. The materials were characterized by Scanning electron microscopy (SEM) and X-ray Photoelectron Spectroscopy (XPS) to assess changes due to the dye functionalization. SEM revealed changes in size after dye modification. XPS confirmed the presence of the dyes on the nanostructured materials and assessed changes in functional groups due to use of different type of modification and concentrations of dyes. The reported approach to stabilize the nanostructured GaOOH provides a simple and environmentally friendly route to tune the properties of wide band gap semiconductor materials.

Highlights

The stability of the nanostructured material was tested in water solutions.6 The particles were dispersed in water and allowed to soak for up to 72 hours
The morphology and the size of the material were examined by a Tescan MAIA3 field-emission scanning electron microscopy (SEM) and the composition was analyzed by AXIS Supra Xray Photoelectron Spectroscopy (XPS)
A 3-way ANOVA analysis was performed on the particle length, width, and length to width (L/W) ratio data collected via SEM measurements

Summary

Introduction

The stability of the nanostructured material was tested in water solutions.6 The particles were dispersed in water and allowed to soak for up to 72 hours. In the case of RR198 in-situ treatment, there was a statistically significant difference between the μM and nM ( between the μM and pM) concentrations with the particle decreasing in size as concentration decreased. For the ex-situ case, there is no statistically significant difference between particle sizes as dye concentration changed.

Results

Conclusion