Luận văn thạc sĩ the design and synthesis of graphene oxide at iron oxide (gofexoy) for catalytic

THAI NGUYEN UNIVERSITY

UNIVERSITY OF AGRICULTURE AND FORESTRY

XAYALACK LASY

THE DESIGN AND SYNTHESIS OF GRAPHENE OXIDE

AT IRON OXIDE (GO@FEXOY) FOR CATALYTIC APPLICATION

BACHELOR THESIS

Study Mode: Full-time

Major: Environmental science and management

Faculty: International Training and Developing center

Batch: 43 Advance Education Program

Thai Nguyen, October 2015

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DOCUMENTATION PAGE WITH ABSTRACT

Thai Nguyen University of Agriculture and Forestry

Degree Program Bachelor of Environment science and Management

Student name Xayalack Lasy

Student ID DTN1153110275

Thesis title The design and synthesis of graphene oxide at iron

oxide (GO@FexOy) for catalytic application

Supervisors

Assoc. Prof. DR Tran Van Dien

Assoc. Prof. Yu-Fen Huang

PhD. Student. He Yue

PhD. Student. Celeste

Abstract:

The thesis describes the oxidation of methylene blue, a basic dye of thiazine series

using a Fenton reaction at normal laboratory temperature and at atmospheric

pressure and the advantages in use of magnetic nanoparticles (MNPs), graphene

oxide @iron oxide nanoparticles(GO@FexOy) in the reaction. Oxidation by Fenton

reactions is proven and economically feasible process for destruction of a variety of

hazardous pollutants in wastewater. MNPs were synthesis via a thermal

decomposition method and (GO@FexOy) via electrooxidation procedure. The

synthesis of MNPs and (GO@FexOy) was characterized by several techniques,

Ultraviolet–visible spectroscopy (UV-Vis), and Transmission Electron Microscopy

(TEM).

The concentrations of dye degradation were determined ectrophotometrically using

Plate Readers at 665 nm, the absorption maximum of the dye.

Keywords: Fenton reaction, nanocomposite, magnetic

nanocomposites, Graphene oxide @ iron oxide

nanoparticles, absorption, methylene blue, H2O2.

Number of pages: 40 pages

Date of submission: September 30, 2015

Supervisor’s signature

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ACKNOWLEDGEMENT

First of all, we know that knowledge is just only can be proved by our works,

and internship is one of the best opportunity for student whose can do their first project

before they find their jobs to enroll in the future. Besides that, we are not only

improving ourselves by knowledge in company environment, institute or laboratory

but also making more friends whose are having many experiences in environment, and

it will help us in the near future. From my perspective, this internship is absolutely

needed, helpful and important.

Because of that, and be assigned by the International Training Center and also

the allowed of Department of Biomedical Engineering and Environmental Science

(National Tsing Hua University, Taiwan). To well done this thesis, I want to express

profound gratitude to Advanced Education Program, the school administrators, the

staffs in Department of Biomedical Engineering and Environmental Science, the staffs

of YF laboratory, and particularly my supervisor, Associate. Prof. DR Tran Van Dien

and Associate Professor Huang Yu Fen whose is always support me every single time

I got troubles. I would like to send both of supervisor a warmly thanks for the

supporting me, and for their sacrifice for education, as same as environmental issues in

Taiwan and Vietnam as all countries in the world.

Finally, I would like to say that I have tried my best to finish this thesis in the

best way, I guess. However, to be honest, I partly believe that my thesis still have

some problems because of the limitation of knowledge and reality experiences,

especially in our environmental circumstances these days. It is totally happy if I can

get feedbacks and comments from you, my teachers, Professor, and Supervisor, to

finish my thesis in a fantastic way, to get the best results.

Sincerely,

Thai Nguyen, October, 2015

Student

Xayalack Lasy

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STATEMENT BY THE AUTHOR

I hereby declare that this submission is my own work from doing my

experimental research and to the best of my knowledge, it contains no material

previously published, nor material which to a substantial extent has been accepted for

the award of any other degree or diploma at any educational institution, except where

due acknowledgement is made in the thesis.

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TABLE OF CONTENTS

CHAPTER I. INTRODUCTION .............................................................................1

1.1. Rationale. ..........................................................................................................1

1.2 Objectives. .........................................................................................................2

CHAPTER II. LITERATURE REVIEW .................................................................3

2.1 Nanotechnologies and Nanomaterial. .................................................................3

2.1.1 Nanotechnologies. ...........................................................................................3

2.1.2 Nanomaterial. .................................................................................................4

2.1.3 Methods synthesis of nanomaterial. ................................................................6

2.1.4 Overview of research and application of nanomaterial and nanocomposite. ....8

2.1.5 Magnetic NPs and application of magnetic NPs in wastewater treatment. ..... 11

2.2 Fenton reaction in the degradation of methylene blue. ..................................... 13

2.3 The use of magnetic nanocomposites in catalytic degradation of methylene blue. ...... 14

2.4 The equipment used to determine the properties of gold nanoparticles and

methylene blue degradation. .................................................................................. 15

2.4.1 Ultraviolet–visible spectroscopy (UV-Vis). ................................................... 15

2.4.2 Transmission Electron Microscopy (TEM). .................................................. 15

CHAPTER III. METHODOLOGY ........................................................................ 18

3.1 Preparation of magnetic nanoparticles and Graphene oxide@iron oxide .......... 18

3.1.1 Method synthesis Fe3O4 NPs. ........................................................................ 18

3.1.2 Method synthesis FeOx, GO@FexOy andGO-Au,FeOx. ................................ 19

3.2 Fenton reaction and the use of Magnetic NPs and Graphene oxide@

iron oxide NPs in in Fenton reaction for catalytic degradation of dye. ................... 21

3.2.1 Chemicals and equipment. ............................................................................ 21

3.2.2 Method preparation stock solution: ............................................................... 22

3.2.3 Procedure. ..................................................................................................... 25

CHAPTER IV. RESULTS AND DISCUSSIONS .................................................. 26

4.1 Characterizations. ............................................................................................ 26

4.1.1 Magnetic nanoparticles. ................................................................................ 26

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