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Yiling Zhang - Materials Science and Engineering - Carnegie Mellon ...

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!<br />

THESIS<br />

<strong>Carnegie</strong> <strong>Mellon</strong> University<br />

CARNEGIE INSTITUTE OF TECHNOLOGY<br />

SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS<br />

FOR THE DEGREE OF Doctor of Philosophy<br />

TITLE! "#$#%&'(&#)*+!,*-+-./+/&0+#.!1.+#2#+0!-3!4#5678#9'5:!<br />

;'+'


!<br />

Visible-light Photocatalytic Activity<br />

of TiO2/BiFeO3 Heterostructures<br />

Submitted in partial fulfillment of the requirements for<br />

the degree of<br />

Doctor of Philosophy<br />

in<br />

<strong>Materials</strong> <strong>Science</strong> <strong>and</strong> <strong>Engineering</strong><br />

<strong>Yiling</strong> <strong>Zhang</strong><br />

B.S., <strong>Engineering</strong> Physics, The Hong Kong Polytechnic University<br />

M.S., <strong>Materials</strong> <strong>Science</strong> <strong>and</strong> <strong>Engineering</strong>, <strong>Carnegie</strong> <strong>Mellon</strong> University<br />

<strong>Carnegie</strong> <strong>Mellon</strong> University<br />

Pittsburgh, PA<br />

February, 2013<br />

! ""!


!<br />

Acknowledgements<br />

!<br />

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!<br />

Table of Contents!<br />

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5


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Chapter 2 Background<br />

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!<br />

Chapter 6 Correlation between Polarization <strong>and</strong><br />

Photochemical Activity of BiFeO3 <strong>and</strong> TiO2/BiFeO3<br />

!<br />

6.1 Introduction<br />

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6.3 Results <strong>and</strong> Discussion<br />

6.3.1 VPFM Approach<br />

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!<br />

Chapter 8 Influence of Phase <strong>and</strong> Orientation on<br />

Photocatalytic Activity of TiO2/BiFeO3 Heterostructure<br />

8.1 Introduction<br />

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!<br />

8.2 Experimental<br />

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8.3 Results <strong>and</strong> Discussion<br />

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Influence of Phase <strong>and</strong> Orientation on Photocatalytic Activity<br />

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