Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Bottom-up assembly to Ag nanoparticles embedded Nb-doped TiO2 nanobulks with improved n-type thermoelectric properties | |
Liu, Chengyan1,2; Miao, Lei1; Zhou, Jianhua1; Huang, Rong3; Tanemura, Sakae1,4,5 | |
2012 | |
发表期刊 | JOURNAL OF MATERIALS CHEMISTRY |
卷号 | 22期号:28页码:14180-14190 |
摘要 | Nb-doped TiO2-based nanostructures were novelly prepared by an economical and environmentally friendly hydrothermal method from TiO2 and Nb2O5 powder precursors. The proposed formation mechanism is acceptable for the design of various Nb-doped TiO2-based nanostructures. Furthermore, Nb-doped TiO2 nanostructured bulk materials (nanobulks) embedded with Ag nanoinclusions were first fabricated by the bottom-up assembly of Ag2O nanoparticles loaded Nb-doped TiO2-based nanostructures. The introduction of Ag nanoparticles remarkably increased the Seebeck coefficient (S) of the TiO2 bulk ceramic by 15% to 370 mu VK-1 in the maximum case on account of the electron filtering effect. Moreover, their electrical conductivity (sigma) was also improved by one order of magnitude up to 160 Omega(-1) cm(-1), resulting from the contribution of both introducing Ag nanoparticles and Nb-doping. Finally, the figure of merit (ZT) was increased by about two-fold owing to the substantially optimized power factors (S-2 sigma). Our obtained results strongly confirm that the Ag embedded Nb-doped TiO2 nanobulks can be used as good thermoelectric materials up to the high temperature of about 800 degrees C. |
文章类型 | Article |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1039/c2jm31469j |
研究领域[WOS] | Chemistry ; Materials Science |
关键词[WOS] | TITANATE NANOTUBES ; FORMATION MECHANISM ; TITANIUM-DIOXIDE ; STRUCTURAL FEATURES ; RAMAN-SPECTROSCOPY ; HIGH-TEMPERATURE ; NANBO3 POWDERS ; THIN-FILMS ; PERFORMANCE ; ENHANCEMENT |
收录类别 | SCI |
语种 | 英语 |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000305796300046 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/10538 |
专题 | 中国科学院广州能源研究所 |
作者单位 | 1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.E China Normal Univ, Key Lab Polarized Mat & Devices, Minist Educ, Shanghai 200062, Peoples R China 4.Japan Fine Ceram Ctr, Atsuta Ku, Nagoya, Aichi 4568587, Japan 5.Nagoya Inst Technol, Powder Technol PJ Lab, Showa Ku, Nagoya, Aichi 4668555, Japan |
推荐引用方式 GB/T 7714 | Liu, Chengyan,Miao, Lei,Zhou, Jianhua,et al. Bottom-up assembly to Ag nanoparticles embedded Nb-doped TiO2 nanobulks with improved n-type thermoelectric properties[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(28):14180-14190. |
APA | Liu, Chengyan,Miao, Lei,Zhou, Jianhua,Huang, Rong,&Tanemura, Sakae.(2012).Bottom-up assembly to Ag nanoparticles embedded Nb-doped TiO2 nanobulks with improved n-type thermoelectric properties.JOURNAL OF MATERIALS CHEMISTRY,22(28),14180-14190. |
MLA | Liu, Chengyan,et al."Bottom-up assembly to Ag nanoparticles embedded Nb-doped TiO2 nanobulks with improved n-type thermoelectric properties".JOURNAL OF MATERIALS CHEMISTRY 22.28(2012):14180-14190. |
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