Self-supported construction of 3D CdMoO4hierarchical structures from nanoplates with enhanced photocatalytic properties
Self-supported construction of 3D CdMoO4hierarchical structures from nanoplates with enhanced photocatalytic properties
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利用具有增强光催化性能的纳米板自支撑构建 3D CdMoO4 分级结构
DOI：
10.1039/c4ra05472e
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发表时间：
2014
期刊：
影响因子：
3.9
通讯作者：
Chen Zhonglin
中科院分区：
文献类型：
--
作者：
Wang Wenshou;Cui Jianxun;Wang Panpan;Zhen Liang;Shao Wenzhu;Chen Zhonglin
采用水热法制备了由单晶纳米片构成的三维CdMoO 4分级结构。采用X射线粉末衍射（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外-可见分光光度计对样品进行了表征。通过改变反应物浓度、反应温度、钼源、pH值和反应时间，可以很容易地调节产物的形貌。CdMoO 4分级结构的形成过程与两步生长过程有关，即首先在合成过程中形成CdMoO 4主纳米片，然后在主纳米片两侧以规则的方式自构建小纳米片。考察了CdMoO 4分级结构和纳米片在紫外光照射下对罗丹明B（RhB）的光催化降解活性。由纳米片构建的CdMoO 4分级结构对RhB的光催化降解具有比CdMoO 4纳米片更高的光催化活性，这主要是由于其独特的形貌和高结晶度。
Three-dimensional (3D) CdMoO4 hierarchical structures constructed by single-crystalline nanoplates were prepared by a facile hydrothermal route. The obtained samples were systematically characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-Vis spectrophotometry. The morphology modulation of the as-prepared products could be easily tuned by changing the concentration of reactants, reaction temperature, molybdenum source, pH value and reaction time. The formation process of CdMoO4 hierarchical structures was related to the two-step growth, in which CdMoO4 main nanoplates were formed first in the synthesis, followed by self-construction of small nanoplates on both side of the main nanoplates in a regular fashion. The photocatalytic activities of CdMoO4 hierarchical structures and nanoplates for degradation of Rhodamine B (RhB) under ultraviolet (UV) light irradiation were also evaluated. CdMoO4 hierarchical structures constructed by nanoplates have a higher photocatalytic activity toward photo-degradation of RhB than that of CdMoO4 nanoplates, mainly due to their unique morphology and high crystallinity.