Synthesis and comparative investigation of adsorption capability and photocatalytic activities of WO3 and W18O49

被引：29
作者：
Shang, Yaru [1 ]
Cheng, Xiaohu [1 ]
Shi, Ruixia [1 ]
Ma, Qian [1 ]
Wang, Yingzi [1 ]
Yang, Ping [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2020年 / 262卷 / 262期
基金：
中国国家自然科学基金;
关键词：
WO3; W18O49; Adsorption; Kinetics; Photocatalysis; TUNGSTEN-OXIDE; DYE ADSORPTION; REMOVAL; MECHANISM; NANOSTRUCTURES; NANOCOMPOSITES; FABRICATION; REDUCTION; COMPOSITE; NANORODS;
D O I：
10.1016/j.mseb.2020.114724
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The adsorption experimental results show that W18O49 with oxygen vacancies not only has faster adsorption rates for MB but also has larger adsorption capacities than WO3. Besides, the maximum adsorption capacity of urchin-like W18O49 (375.94 mg/g) is about 2.76 times of WO3 (136.25 mg/g). However, photocatalytic results revealed that WO3 has better photocatalytic degradation ability than W18O49. Generally, the adsorption effi-ciency of urchin-like W18O49 (70.01%) is about 3.94 times of WO3 (17.78%), while the photodegradation efficiency of WO3 (62.45%) is 2.38 times of urchin-like W18O49 (26.20%). Therefore, urchin-like W18O49 has the best total removal efficiency, which can remove 96.21% of MB (50 ml, 90 mg/L) within 120 min. These studies emphasize the comprehensive effects of WO3 and W18O49 on dye removal from two aspects of adsorption and photocatalysis and provide strategies for the preparation of efficient dye removal materials.
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页数：9
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