氧化鈰奈米材料之合成及鑑定

Characterization and Formation Pathways in Preparation of Ceria Nanomaterials

書正(Sujan Chowdhury)

指導教授 ： 林錕松

元智大學/工程學院/化學工程與材料科學學系/博士(2011年)

https://doi.org/10.6838/YZU.2011.00172

摘要

鈰二氧化物或者ceria，化工同富有的氧氣空位和在Ce3+和Ce4+之間的更高的氧化還原的能力联系在一起，因此被促進作為氧氣存貯材料高容量。 形態學包括有大小、維度和結構欣然被影響催化作用。 在那看待這工作的主要宗旨是瞭解ceria材料的結構行為甲醇分解的进一步调查的未來燃料电池應用的。 另外尺寸ceria材料的描述特性是這份論文的一個中央部分，為了學會更多關於不同的尺寸ceria材料綜合的機制导致未來應用。 因而我們總結綜合和描述特性一個或三維(1-D/3-D) ceria nanostructure。 這允許我們學習催化作用和形成機制比較在1-D/3-D nanomaterial的ceria上的。 這樣像鉻沾染废水处理的Ceria為重金屬應用不利地也是感動的。 吸附的機制认為是在ceria nanorod表面和哥斯達黎加(VI)陰離子之間的親合力由離子交換。 另外，我們開发三維(三維) ceria nanostructures瞭解形態學nanomaterial和試驗過解釋可能的反應機制。 X光衍射(XRD)和掃描电子显微镜术(SEM)的組合被用于學習水晶綜合，包括水晶的形態演變。 催化劑微细结构也被辨認了並且被描繪了使用領域放射掃描电子显微镜术(FE-SEM)， X光衍射(XRD)，賭注氮氣等溫線、喇曼分光學、熱重力分析或者差额热分析(TGA/DTA)， X-射線光電子分光學(XPS)，在邊緣結構(XANES)附近的X-射線吸收或被扩大的X-射線吸收微细结构(EXAFS)分光學。 在通過使用強有力的同步辐射的地方(即EXAFS， XANES)，當前工作提供进行的研究工作最近進展被淹沒的概要辨認1-D ceria nanorods和三維ceria結構。 EXAFS或XANES分光學廣泛证明非常有效的在確定另外尺寸ceria結構電子和幾何結構。 重要地為潛在的甲醇互作用應用，它也表示，吸附容量和ceria材料的氧化态显著執行分解甲醇和調查與傅立葉變換紅外分光學(FTIR)分析。

關鍵字

Ceria ； 一維(1-D) ceria ； 三維(三維) ceria ； 等級制度的ceria ； 金屬有機框架 ； 有機金屬化合物 ； 形成路 ； EXAFS/XANES ； 甲醇分解。

並列摘要

This Research was done at the Yuan Ze University (YZU), Taiwan during my four (4) years stay for the Ph.D. level Program in Chemical Engineering and Materials Science. I would like to thank Prof. Kuen-Song Lin for accepting me to work on one of the projects in his environmental and nanocatalyst group related in YZU. At this point I would like to express my gratitude to my colleagues and Professors at the Department of Chemical Engineering and Materials Science. I owe special thanks to my Ph.D. thesis supervisor Prof. Kuen-Song Lin in YZU, Taiwan and my former undergraduate Prof. Maksudur Rahman Khan (M.R. Khan) from Bangladesh. Prof. M.R. Khan inspires and recommends me to come to YZU, Taiwan for accomplish of my Master’s degree in Chemical Engineering and Material Science department in YZU and continue my Ph.D. program in same university.
Looking back into the past, Prof. Shawn D. Lin led me into catalytic investigation for Fuel Cell during my Master study in YZU. His devotion into the catalytic development for Fuel cell contributed to my interests in different types of catalyst synthesis and application field. Through him, I learned how to start a research project which made my PhD research easier. My stay in Taiwan has been pleasant because of the support and friendship from several friends. I would have never imagined that upon my arrival at the airport at evening, I would have Prof. M.R. Khan, Chung-Hsuan Huang (黃鐘玄) and Fu wan thing (傅婉婷) picking me up with my heavy luggage and helping me settle down at the beginning. Professor Khan also helped me get started in the university. Staying in YZU I would like to thank my Ph.D. supervisor (K.S. Lin), who helped me cordially to do my research work and always he take care of me as one of his family member. I would like to thank him for being patient and supportive to stay in YZU, Taiwan. Besides Prof. Kuen-Song Lin during my stay in YZU, I was cordially get inspiration from Prof. Chuin-Tih Yeh, Prof. Ay Su (Department of Mechanical Engineering/Fuel Cell Center, Yuan Ze University, Taiwan) too. I would like to give my great acknowledge to my university President Prof. Peng Tsung-Ping (彭宗平) for his inspiration and cordial help to continue my study in Taiwan. I also grateful to Prof. Wu Head, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taiwan for his unfailing encouragement, continuing inspiration and generous help from time to time. I would like to thank all of my colleagues with whom I was working in my research laboratory (Abhijit Krishna Adhikari, Ze-Ping Wang (王治平), Khalil Al-rahman Dehvari, Khanh Toan, Dinh(丁慶全(Khanh)), Wen-Ru Chen(陳玟如(Jessie)), Chih-Ping Liu(劉志平(Terry)), Hsiu-Ping Yeh (葉琇屏(Kate)), Cheng-Yu Pan(潘承煜(Kaga)), Kai-Che Chang (張開哲(Jordan)), Kun-Yu Li (李坤禹), Chao-Shuen Chang (張朝順(Ivan), Hao-Wei Cheng (鄭皓瑋), Yu-Hsien Su (蘇育賢), Shou-Fu Cheng (鄭守富), Wei Lu (盧威(Wells), Mu-Ting Tu (凃牧廷(Jimmy), Wan-Ting Hong (洪琬婷(英文別名), Meng-Long Chuang(莊孟融(Romeo), Chao-Yen Wang (王照燕(Nana)), Tzu-Ting Chien (簡子婷(Ting)), Zong-Yan Tsai(蔡宗晏), Hung-Bin Tsai蔡宏彬(Srenty), Chang-Shaing Hsu (徐千翔( Stanley)) and also my earnest friend She Ho (M.Sc. tenure), Ngô Trung Trực (吳昌村), Shih-Hsin Chen (Peter), Shashi Bhushan Prasad, Yu-hsien Hsieh (Tony, 謝育賢, in Ph. D. tenure). Least and not last I would like to give my great attitude to Wei-Chih LI, Ph.D. (National Taiwan University) for his valuable time to help to characterize some of my sample. I never can forget his time, effort and inspiration in my Ph.D. tenure. My earnest friend Writam Banerjee (Chang Gung University) continuously encourage me to accomplish my research work and always beside with me at any instant.
I would like to thank those professors and colleagues of the department, International language and culture center who gave me kindly support. In the staying period of YZU, my friend Joanne Yang, Nailing (Teaching Excellence Center, YZU), Ruby Kao, Mindy, Lisa, Linda, Mr. Leo (Military service center, YZU) and others made great efforts helping me to settle down in YZU, improve my Chinese capabilites and to introduce their social activities and giving me valuable suggestions. Their friendship will always last in my heart. I am also grateful for the support of Late Professor Yu ke chiang, God bless his departed soul. Especially to Nailing and Joanne Yang (Teaching Excellence Center, YZU) took care of me as their own family member. Without their help, understanding, support and love, I would never achieve my goals.
Besides my scientific work, equally important thing that I was learnt in YZU an importance of teamwork. At this point I am especially grateful to my colleagues. At the end, I would like to remember all officials in Yuan Ze University and everyone was always my very good friend. I would also like to thank Professors in Taiwan for accepting to be co-referee of this thesis. Last but not least I am thankful to my family, younger brother, Kobayashi Kana (小林可奈) and everyone. Mainly to my parent who has been my side in all situations, my mother as patient, open-minded, and instructive all these years, she give me courage and inspiration to complete my Ph.D. work. My father always takes care of me and inspired me to accomplish my study. My younger brother Sumon is a key man in my family. He always takes care of my parents and inspired me to reach my goal. I really love him so much. I also acknowledge my friends both in Bangladesh and YZU, Taiwan whom are always supported my decisions and for being good friends in all this time.

並列關鍵字

Ceria ； One-dimensional (1-D) ceria ； Three dimensional (3-D) ceria ； Hierarchical ceria ； Metal organic frameworks ； Organometallics ； Formation pathways ； EXAFS/XANES ； Methanol decomposition.

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