Mineralizer-Assisted Shape-Controlled Synthesis, Characterization, and Photocatalytic Evaluation of CdS Microcrystals
Mineralizer-Assisted Shape-Controlled Synthesis, Characterization, and Photocatalytic Evaluation of CdS Microcrystals
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DOI：
10.1021/jp9064714
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发表时间：
2009-10
影响因子：
3.7
通讯作者：
M. Muruganandham;Y. Kusumoto;Chiyo Okamoto;A. Muruganandham;M. Abdulla-Al-Mamun;B. Ahmmad
中科院分区：
文献类型：
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作者：
M. Muruganandham;Y. Kusumoto;Chiyo Okamoto;A. Muruganandham;M. Abdulla-Al-Mamun;B. Ahmmad
通过调节水和乙醇的溶剂比，首次在不使用任何催化剂或模板剂的情况下，大规模合成了高质量、结晶良好的单晶纤锌矿型CdS六方微塔（有无管状结构）和八面体结构的CdS。利用X射线衍射仪、X射线能谱仪、透射电子显微镜和场发射扫描电子显微镜对产物进行了表征。在开放大气条件下，硫氰酸镉在400 °C下热分解形成了具有微塔、八面体几何形状和六方板的CdS。考察了溶剂、前驱体初始浓度、分解温度和时间对CdS形貌的影响，并对结果进行了讨论。XRD结果表明，在300 °C下反应2 h，硫氰酸镉配合物完全分解为CdS，并形成纤锌矿相，该相的存在有利于CdS的合成。
High-quality, well-crystallized, single-crystal, wurtzite CdS hexagonal microtowers (with and without tubular structure) and CdS with octahedral geometry were successfully synthesized by tuning the solvent ratio of water and ethanol for the first time on a large scale without using any catalysts or templates. The products were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectrometry, transmission electron microscopy, and field emission scanning electron microscopy. CdS with microtowers, octahedral geometry, and hexagonal plates was formed by thermal decomposition of cadmium thiocyanate at 400 °C under open atmospheric conditions. The influence of solvent, initial precursor concentration, decomposition temperature, and time on the morphology of CdS was investigated, and the results were discussed. The XRD results showed that the cadmium thiocyanate complex is completely decomposed into CdS at 300 °C for 2 h and the wurtzite phase was formed under all experimental conditions, which ope...