Optical Properties and. Photocatalytic Performances of Pd Modified ZnO Samples

被引:139
作者
Chang, Yonggang [1 ]
Xu, Jian [2 ]
Zhang, Yunyan [1 ]
Ma, Shiyu [1 ]
Xin, Lihui [2 ]
Zhu, Lina [2 ]
Xut, Chengtian [1 ]
机构
[1] E China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China
[2] Shanghai Inst Measurement & Testing Technol, Shanghai 201203, Peoples R China
关键词
SURFACE-PLASMON RESONANCE; ONE-POT SYNTHESIS; TITANIUM-DIOXIDE; ZINC-OXIDE; THIN-FILMS; PHOTOCHEMICAL PROCESSES; TIO2; PARTICLES; BAND-GAP; PHOTOLUMINESCENCE; SEMICONDUCTOR;
D O I
10.1021/jp9050808
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this paper, Pd/ZnO samples with various palladium contents were prepared through a facile one-pot hydrothermal method. The crystal structures, chemical compositions, and optical properties of the samples were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-vis spectroscopy, and photoluminescence (PL) spectroscopy. The results demonstrate that partial Pd loads on the surface and that the rest is doped in the lattice of ZnO. In addition, the relationship among the photoluminescence, photocatalytic performance, and electronic structure of the samples is investigated in detail. It is found that the modification of palladium not only modulates the electronic structure of ZnO but also affects the amount of surface hydroxyl. The former determines the optical properties of Pd/ZnO, leading to the shift of absorption and PL peaks, while the latter influences the photocatalytic activity of the samples. The modification of palladium at an optimal value not only promotes the separation of photogenerated electron-hole pairs but also increases the amount of the surface hydroxyl resulting in the promotion of photodegradation efficiency.
引用
收藏
页码:18761 / 18767
页数:7
相关论文
共 67 条
[51]   Synthesis and Characterization of Noble Metal (Pd, Pt, Au, Ag) Nanostructured Materials Confined in the Channels of Mesoporous SBA-15 [J].
Wang, Zhou-Jun ;
Xie, Yongbing ;
Liu, Chang-Jun .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (50) :19818-19824
[52]   Photocatalytic properties of nc-Au/ZnO nanorod composites [J].
Wu, Jih-Jen ;
Tseng, Chan-Hao .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 66 (1-2) :51-57
[53]   Size-dependence of surface plasmon resonance and oxidation for pd nanocubes synthesized via a seed etching process [J].
Xiong, YJ ;
Chen, JY ;
Wiley, B ;
Xia, YN ;
Yin, YD ;
Li, ZY .
NANO LETTERS, 2005, 5 (07) :1237-1242
[54]   Kinetically controlled synthesis of triangular and hexagonal nanoplates of palladium and their SPR/SERS properties [J].
Xiong, YJ ;
McLellan, JM ;
Chen, JY ;
Yin, YD ;
Li, ZY ;
Xia, YN .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (48) :17118-17127
[55]   NEW APPROACHES FOR IMPROVING SEMICONDUCTOR GAS SENSORS [J].
YAMAZOE, N .
SENSORS AND ACTUATORS B-CHEMICAL, 1991, 5 (1-4) :7-19
[56]   Physical mechanism of blue-shift of UV luminescence of a single pencil-like ZnO nanowire [J].
Yang, Y. H. ;
Chen, X. Y. ;
Feng, Y. ;
Yang, G. W. .
NANO LETTERS, 2007, 7 (12) :3879-3883
[57]   Synthesis and Characterization of Sb-Doped ZnO Nanobelts with Single-Side Zigzag Boundaries [J].
Yang, Ya ;
Qi, Junjie ;
Liao, Qingliang ;
Zhang, Yue ;
Tang, Lidan ;
Qin, Zi .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (46) :17916-17919
[58]   Fabrication, structural characterization, and photoluminescence of Ga-doped ZnO nanobelts [J].
Yang, Ya ;
Qi, Junjie ;
Liao, Qingliang ;
Zhang, Yue ;
Yan, Xiaoqing ;
Huang, Yunhua ;
Tang, Lidan .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2009, 94 (04) :799-803
[59]   Effects of Ag doping on the photoluminescence of ZnO films grown on Si substrates [J].
Yang, Z ;
Zhang, ZY ;
Lin, BX ;
Fu, ZX ;
Xu, J .
JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (41) :19200-19203
[60]   Nanophotonic switch using ZnO nanorod double-quantum-well structures [J].
Yatsui, Takashi ;
Sangu, Suguru ;
Kawazoe, Tadashi ;
Ohtsu, Motoichi ;
An, Sung Jin ;
Yoo, Jinkyoung ;
Yi, Gyu-Chul .
APPLIED PHYSICS LETTERS, 2007, 90 (22)