Photocatalytic Analysis and Characterization of Zn2SnO4 Nanoparticles Synthesized via Hydrothermal Method with Na2CO3 Mineralizer
Photocatalytic Analysis and Characterization of Zn2SnO4 Nanoparticles Synthesized via Hydrothermal Method with Na2CO3 Mineralizer
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DOI：
10.4028/www.scientific.net/amr.97-101.19
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发表时间：
2010-03
期刊：
影响因子：
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通讯作者：
Y. Wu;Wen-Ku Chang;M. Jou
中科院分区：
文献类型：
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作者：
Y. Wu;Wen-Ku Chang;M. Jou
以碳酸钠(Na2CO3)为弱碱性矿化剂，采用水热法制备了纳米锡酸锌(ZTO)。经150、200和250oC水热处理48h后，X-射线衍射仪(X射线衍射仪)分析表明，250°C样品的粒径小于50 nm时，可以形成高度分散的高结晶度的纳米结构。透射电子显微镜结果表明，ZTO纳米粒子为面心立方单晶团聚在一起。拉曼光谱结果表明，所合成的ZTO纳米晶具有尖晶石结构。此外，还考察了紫外光照射下亚甲基蓝(MB)的光催化活性。2M Na2CO3矿化剂在250℃下合成的ZTO具有良好的光催化活性。三种不同处理方式的ZTO都有三条不同的紫外-可见吸收曲线，这直接影响到它们相应的光催化活性。
Zinc stannate Zn2SnO4 (ZTO) nanoparticles were synthesized via a hydrothermal process utilizing sodium carbonate (Na2CO3) as a weak basic mineralizer. The samples were hydrothermally treated at 150, 200, and 250oC for 48 h. The X-ray diffraction (XRD) patterns show that the highly-crystalline ZTO nanostructure could be formed in a well-dispersed manner for the 250°C sample at a particle size of less than 50 nm. As determined from transmission electron microscopy (TEM) results, ZTO nanoparticles are face-centered cubic single crystals agglomerated together. The Raman spectra results showed that the ZTO nanocrystals have a spinel structure. Furthermore, photocatalytic activity was tested with methylene blue (MB) by UV irradiation. The ZTO synthesized by the 2 M Na2CO3 mineralizer at 250oC demonstrated excellent photocatalytic activity. The ZTO treated three different ways had three distinct UV-Visible absorption curves, which directly influences their corresponding photocatalytic activity.