Characterization and Photocatalytic Kinetics of the ZnO Powder Prepared Using a Polyol Process
學年 102
學期 1
出版（發表）日期 2013-09-01
作品名稱 Characterization and Photocatalytic Kinetics of the ZnO Powder Prepared Using a Polyol Process
作品名稱（其他語言）
著者 Yu, Hsuan-Fu; Qian, Dong-Wei
單位 淡江大學化學工程與材料工程學系
出版者 Philadelphia: Taylor & Francis
著錄名稱、卷期、頁數 Particulate Science and Technology 31(5), pp.482-487
摘要 Crystalline ZnO photocatalytic nanoparticles were prepared by calcining the polyol-derived solid precursor in air at T ≥ 400°C for 3h. The polyol-derived solid precursor was prepared by isothermally treating the ethylene glycol solution of zinc nitrate at 160°C for 8h. The resultant suspension was filtered, washed, dried and calcined to form the required oxides. The photocatalytic ability of the ZnO particles was investigated by measuring the ability of the calcined ZnO particles to photocatalytically decompose the methylene blue (MB) in water, under 365 nm UV light irradiation. The ZnO particles calcined at 400°C ≤T ≤ 700°C exhibited better photocatalytic abilities than the P25. The photocatalytic kinetics for the MB decomposition reaction were investigated by estimating the corresponding specific reaction rates, such as k'MB,m (based on mass of the catalyst used) and k'MB,BET (based on surface area of the catalyst used). It was found that the specific surface area and the crystallinity of ZnO particles strongly affected the performance of ZnO photocatalysts. The ZnO particles calcined at 500°C (k'MB,m=0.63L=/(min．g)) had an optimized combination of the crystallinity and the specific surface area, and gave the best photocatalytic ability per unit particle mass.
關鍵字 Kinetics; photocatalysts; polyol method; reaction rate constant; zinc oxide
語言 en_US
ISSN 0272-6351 1548-0046
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Yu, Hsuan-Fu
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版,紙本
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