%0 Journal Article
%T Preparation of Al2O3-coated Nano-ZnO Composite Powder for Reducing Photocatalytic Activity<br>纳米氧化锌表面包覆氧化铝复合粉体制备及其光催化活性
%A YIN Chun-lei
%A YUAN Fang-H
%A HUANG Shu-Ian
%A <br>尹春雷，袁方利，黄淑兰
%J 过程工程学报
%D 2003
%I 
%X Al2O3-coated nano-ZnO composite powder was obtained by coating precursor in slurry of basic zinc carbonate. The composite powder was examined by UV-VIS and TEM, and its photocatalytic activity was determined by photooxidation of castor oil illuminated under a high pressure mercury lamp. The composite particles are about 50 nm, and coated homogeneous film is 3-5 nm thick. The composite powder has nice ultraviolet-adsorption as good as un-coated nano-ZnO and its photocatalytic activity is reduced significantly. Compared with coating the calcined product ZnO powder surface, less steps are required in this coating process. As a result, the agglomeration during preparation steps is avoided.
%K Al2O3-coated
%K nano-ZnO
%K composite powder
%K photocatalytic activity<br>包覆
%K 纳米氧化锌
%K 复合粉体
%K 光催化活性
%K 制备
%K 氧化铝
%K 碱式碳酸锌
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=C9F28C2CDB12381A&yid=D43C4A19B2EE3C0A&vid=38B194292C032A66&iid=E158A972A605785F&sid=C7DDDE86E6286CD9&eid=406BF8ED3BCE1927&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=14&reference_num=9