Title

利用可見光探討銀沉積於奈米氧化鋅的 光催化活性

Translated Titles

The photocatalytic activities of silver doped ZnO nanoparticles under visible light irradiation

Authors

陳皇翰

Key Words

氧化鋅 ; zinc oxide

PublicationName

成功大學化學系學位論文

Volume or Term/Year and Month of Publication

2005年

Academic Degree Category

碩士

Advisor

黃守仁

Content Language

繁體中文

Chinese Abstract

本研究針對光催化之觸媒進行性質上的改良。以石榴石釹雷射製備出比市售氧化鋅(~28.9 nm)更小的光觸媒粉體(~16.7 nm)以及銀沉積於氧化鋅上的光觸媒,並將它們應用於在可見光下對降解甲基藍的研究。這些光觸媒藉由XRD、UV-Vis、TEM、SEM、EDS和SAED被鑑定。在光催化降解甲基藍的結果中,發現在pH=11的系統裡,2%Ag/ZnO光觸媒在可見光燈的照射下是最高效率去完成甲基藍的光降解。但是在更多含量的銀下對光降解效率而言卻是有害的。

English Abstract

The objective of this study is to increase the photocatalytic activity of semiconductor photocatalysts. The ZnO photocatalysts(~16.7 nm) made by Nd:YAG Laser are smaller than commercial zinc oxide(~28.9 nm). The silver doped ZnO photocatalysts were made by Nd:YAG Laser and research in photodegradation under visible light irradiation. The photocatalysts were characterized by XRD, UV-Vis, TEM, SEM, EDS and SAED. In the results of photocatalysis, it was found in pH=11 that the 2% Ag content was optimum to achieve the highest efficiency of the methylene blue photodegradation under visible light irradiation. But more Ag content was detrimental to the photodegradation efficiency.

Topic Category 基礎與應用科學 > 化學
理學院 > 化學系
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