A sol-hydrothermal route to truncated tetragonal bipyramid nanocrystals and hierarchical hollow microspheres of anatase tio2 for application in dye-sensitized solar cells
文献类型：期刊论文
| 作者 | Zhang, Linlin1,2; Tian, Long1; He, Qingquan3; Liu, Dan1,4; Zai, Jiantao3; Qian, Xuefeng3; Wang, Cheng1,4 |
| 刊名 | Rsc advances
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:74页码:69798-69806 |
| ISSN号 | 2046-2069 |
| DOI | 10.1039/c6ra14857c |
| 通讯作者 | Qian, xuefeng(xfqian@sjtu.edu.cn) ; Wang, cheng(cwang@ciac.ac.cn) |
| 英文摘要 | In this work, a series of nano-and microcrystals of anatase tio2 including well-defined truncated tetragonal bipyramids (ttbs) (15-20 nm) and hierarchical hollow microspheres (hhms) (1.5 mu m) were successfully synthesized using a facile sol-hydrothermal approach free from surfactants and templates. the latter hhms also consisted of similar ttbs but bigger in size. the conversion pathway to tio2 mainly depended on the volume ratio of h2o2 to nh3. in the presence of nh4f, small ttbs were generated as a result of inhibited growth along both [100] and [001] directions. the formation of hhms through gradual depletion of the yolk followed a typical ostwald ripening process. their photovoltaic activities were investigated on dye-sensitized solar cells (dsscs) using bilayer photoanodes made of typical ttbs and hhms. the cells delivered a power conversion efficiency (pce) of 9.06%, corresponding to a 51.5% increment over those fabricated in the same way using p25 and 400 nm tio2 (ccic). meanwhile, the short-circuit current density (j(sc)) reached up to 18.38 ma cm(-2), which was 1.46 times that of the p25 + ccic cells. they were also superior to previously reported dsscs based on highly crystalline nanooctahedra and agglutinated mesoporous microspheres. the small particle size of ttbs and micrometer size and hierarchical structure of hhms endowed the bilayer photoanodes with a synergetic effect of dye loading and light scattering. moreover, their exposed {001} and {101} facets, which could facilitate spontaneous charge separation through preferential carrier flow towards specific facets, and highly crystalline anatase phase rendered the cells efficient in charge collection. |
| WOS关键词 | ENHANCED PHOTOCATALYTIC ACTIVITY ; CONVERSION EFFICIENCY ; ELECTRICAL-IMPEDANCE ; LIGHT-SCATTERING ; 101 FACETS ; NANOTUBES ; SPHERES ; CRYSTALS ; RECOMBINATION ; ANODIZATION |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000381512800018 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375653 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Qian, Xuefeng; Wang, Cheng |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Jilin, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China 4.Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Linlin,Tian, Long,He, Qingquan,et al. A sol-hydrothermal route to truncated tetragonal bipyramid nanocrystals and hierarchical hollow microspheres of anatase tio2 for application in dye-sensitized solar cells[J]. Rsc advances,2016,6(74):69798-69806. |
| APA | Zhang, Linlin.,Tian, Long.,He, Qingquan.,Liu, Dan.,Zai, Jiantao.,...&Wang, Cheng.(2016).A sol-hydrothermal route to truncated tetragonal bipyramid nanocrystals and hierarchical hollow microspheres of anatase tio2 for application in dye-sensitized solar cells.Rsc advances,6(74),69798-69806. |
| MLA | Zhang, Linlin,et al."A sol-hydrothermal route to truncated tetragonal bipyramid nanocrystals and hierarchical hollow microspheres of anatase tio2 for application in dye-sensitized solar cells".Rsc advances 6.74(2016):69798-69806. |
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来源：中国科学院大学
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