Synthesis and photocatalytic performance of ZnWO4 catalyst
Synthesis and photocatalytic performance of ZnWO4 catalyst
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ZnWO4催化剂的合成及光催化性能
DOI：
10.1016/j.mseb.2007.02.009
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发表时间：
2007-05-15
期刊：
影响因子：
--
通讯作者：
Zhu, Yongfa
中科院分区：
文献类型：
--
作者：
Huang, Guangli;Zhu, Yongfa
通过煅烧共沉淀前驱体制备了ZnWO4粉末光催化剂，发现其具有较高的光催化活性。在450℃下焙烧4h形成ZnWO4晶相，随着焙烧温度和时间的增加，ZnWO4粉体的晶粒尺寸和粒度增大。在500℃作用4 h时，光催化剂达到最高光催化活性，25 min内甲醛去除率达90%。此外，其光催化活性与P-25降解气态甲醛的活性几乎相似。ZnW04在水溶液中降解RhB也表现出较高的光催化活性。高结晶度和大表面积是其高光催化活性的原因。(c) 2007 Elsevier B.V.版权所有
ZnWO4 powder photocatalyst was prepared by calcining co-precipitated precursor, and its high photocatalytic activity was revealed. The ZnWO4 crystal phase was formed at 450 degrees C for 4 h. The crystal size and particle size of ZnWO4 powder increased with the increasing of calcination temperature and time. At 500 degrees C for 4 h, the photocatalyst reaches the highest photocatalytic activity with formaldehyde removal efficiency of 90% within 25 min. Moreover, its photocatalytic activity is almost similar to that of P-25 in degradation of gaseous formaldehyde. ZnW04 also displayed high photocatalytic activity in aqueous solution for degradation of RhB. The high crystallinity and large surface area are responsible for its high photocatalytic activity. (c) 2007 Elsevier B.V. All rights reserved.