Theses and Dissertations

Date of Award

5-2019

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Dr. Yuanbing Mao

Second Advisor

Dr. Karen Martirosyan

Third Advisor

Dr. Tulay Atesin

Abstract

There is a need in the scientific world to design and develop high quality nanomaterials with multifunctional applications. In this work, we explore the molten-salt method (MSS) as a new green method for the synthesis of complex metal oxides. We adjusted all synthesis parameters such as time, temperature and pH to generate an optimum La2Hf2O7 nanoparticle with a well define shape and surface. Activator ions such as Eu3+, Tb3+, Dy3+, Bi3+ and uranium ion (U4+, U6+) were used to monitor its structural and optical behavior effect when doped.

Our results showed effective quantum yield, thermal, pressure stability, near to white light color coordinate as determined by the International Commission on Illumination (CIE) with low color coordinate temperature (CCT) for white light emitting diode (WLEDs) applications. In addition, we explore the effectiveness of our material as a scintillator for radiation detection, bio-imaging and as a nuclear waste host. All results indicate that our host material shows potential as an efficient multifunctional nanomaterial for a wide range of applications.

Comments

Copyright 2019 Jose P. Zuniga. All Rights Reserved.

https://go.openathens.net/redirector/utrgv.edu?url=https://www.proquest.com/dissertations-theses/molten-salt-synthesized-pyrochlore-nanoparticles/docview/2245865563/se-2?accountid=7119

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