Photo-assisted synthesis of rosalike CuSe hierarchical nanostructures on TiO2 nanotubes with remarkable photocatalytic performance
Photo-assisted synthesis of rosalike CuSe hierarchical nanostructures on TiO2 nanotubes with remarkable photocatalytic performance
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光辅助合成具有优异光催化性能的 TiO2 纳米管上的玫瑰状 CuSe 分级纳米结构
DOI：
10.1016/j.electacta.2012.08.013
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发表时间：
2012-11
影响因子：
6.6
通讯作者：
Meng, DeShui
中科院分区：
文献类型：
--
作者：
Li, Yue;Luo, Shenglian;Yang, Lixia;Liu, Chengbin;Chen, Yao;Meng, DeShui
采用光辅助化学浴沉积法，在负载Cu 2 O纳米线的TiO 2纳米管阵列（NTs）表面成功合成了由纳米片构成的高度结晶的CuSe分级纳米结构.预合成的Cu 2 O纳米线作为铜的前驱体和晶体生长的成核中心，导致CuSe晶体在低温下快速形成。这种新型材料具有p-n结和分级纳米结构的优点，提供了高的比表面积，从而促进了电子的转移，抑制了光生空穴-电子对的复合，这是通过光电化学测量证明的。同时，紫外-可见漫反射光谱（DRS）表明改性后的TiO 2在可见光区的吸收明显增强。采用X射线衍射仪（XRD）和高分辨透射电子显微镜（HRTEM）对产物进行了表征。提出了低温下Rosalike结构CuSe形成的可能机制。此外，该材料对蒽-9-羧酸（ACA）的光催化降解也表现出了良好的光催化性能.
Highly crystalline CuSe hierarchical nanostructures made of nanosheets have been successfully synthesized on the surface of TiO2nanotube arrays (NTs) pre-loaded with Cu2O nanowires using a photo-assisted chemical bath deposition. The pre-synthesized Cu2O nanowires served as copper precursor and nucleation centers for the crystal growth, resulting in the rapid formation of CuSe crystals at low temperature. This novel material held the advantages of both p–n junction and hierarchical nanostructures which provided high specific surface areas, thus facilitating the transfer of the electrons and inhibiting the recombination of the photogenerated hole-electron pairs, which were demonstrated by photoelectrochemistry measurements. Meanwhile, UV–vis diffuse reflectance spectra (DRS) showed the modified TiO2significantly enhanced the absorption in the visible light region. X-ray diffractometer (XRD) and high resolution transmission electron microscopy (HRTEM) were employed to demonstrate that the resulting CuSe was single crystalline. A possible mechanism was proposed to explain the formation of rosalike architecture CuSe at low temperature. In addition, this novel material exhibited remarkable photocatalytic performance on the degradation of anthracene-9-carboxylic acid (ACA).
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DOI：
10.1016/j.jiec.2008.09.001
发表时间：
2008-09-01
影响因子：
6.1
作者：
Ahsanulhaq, Q.;Kim, J. H.;Hahn, Y. B.
通讯作者：
Hahn, Y. B.
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作者：
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影响因子：
8.6
作者：
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通讯作者：
Myers, Deborah J.
影响因子：
0.9
作者：
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M. Dergacheva;V. Chaikin;V. P. Grigor’eva;E. Pantileeva