Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 한성환 | - |
dc.date.accessioned | 2018-03-13T06:11:34Z | - |
dc.date.available | 2018-03-13T06:11:34Z | - |
dc.date.issued | 2013-06 | - |
dc.identifier.citation | ACS applied materials & interfaces. 2013, 5(11), p.5201 - 5207 | en_US |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/am401034r | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/46033 | - |
dc.description.abstract | A facile method for increasing the reaction rate of dye adsorption, which is the most time-consuming step in the production of dye-sensitized solar cells (DSSCs), was developed. Treatment of a TiO 2 photoanode with aqueous nitric acid solution (pH 1) remarkably reduced the reaction time required to anchor a carboxylate anion of the dye onto the TiO 2 nanoparticle surface. After optimization of the reaction conditions, the dye adsorption process became 18 times faster than that of the conventional adsorption method. We studied the influence of the nitric acid treatment on the properties of TiO 2 nanostructures, binding modes of the dye, and adsorption kinetics, and found that the reaction rate improved via the synergistic effects of the following: (1) electrostatic attraction between the positively charged TiO 2 surface and ruthenium anion increases the collision frequency between the adsorbent and the anchoring group of the dye; (2) the weak anchoring affinity of NO 3 ? in nitric acid with metal oxides enables the rapid coordination of an anionic dye with the metal oxide; and (3) sufficient acidity of the nitric acid solution effectively increases the positive charge density on the TiO 2 surface without degrading or transforming the TiO 2 nanostructure. These results demonstrate the developed method is effective for reducing the overall fabrication time without sacrificing the performance and long-term stability of DSSCs. Graphic Abstract ACS Electronic Supporting Info | en_US |
dc.description.sponsorship | This work was supported by the Global Frontier R&D Program on Center for Multiscale Energy System (2012M3A6A7054856), the Pioneer Research Program (2012-0005955) funded by the National Research Foundation (NRF) under the Ministry of Science, ICT & Future Planning (MSIP), Korea. The work was also supported by a grant from the New & Renewable Energy Program (2010T100100654, 2010T100100651) of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) funded by the Ministry of Trade, Industry & Energy (MOTIE) and a grant from the KIST internal project (2E23821). | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | dye-sensitized solar cells | en_US |
dc.subject | dye adsorption | en_US |
dc.subject | reaction kinetics | en_US |
dc.subject | acid treatment | en_US |
dc.subject | adsorption time. | en_US |
dc.title | Rapid Dye Adsorption via Surface Modification of TiO2 Photoanodes for Dye-Sensitized Solar Cells | en_US |
dc.type | Article | en_US |
dc.relation.no | 11 | - |
dc.relation.volume | 5 | - |
dc.identifier.doi | 10.1021/am401034r | - |
dc.relation.page | 5201-5207 | - |
dc.relation.journal | ACS APPLIED MATERIALS & INTERFACES | - |
dc.contributor.googleauthor | Kim, Boeun | - |
dc.contributor.googleauthor | Park, Se Woong | - |
dc.contributor.googleauthor | Kim, Jae-Yup | - |
dc.contributor.googleauthor | Yoo, Kicheon | - |
dc.contributor.googleauthor | Lee, Jin Ah | - |
dc.contributor.googleauthor | Lee, Min-Woo | - |
dc.contributor.googleauthor | Lee, Doh-Kwon | - |
dc.contributor.googleauthor | Kim, Jin Young | - |
dc.contributor.googleauthor | Kim, BongSoo | - |
dc.contributor.googleauthor | Han, Sunghwan | - |
dc.relation.code | 2013008623 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | shhan | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.