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A Review of Anodic TiO2 Nanostructure Formation in High-temperature Phosphate-based Organic Electrolytes: Properties and Applications

고온 인산염 유기 전해질에서의 TiO2 나노구조 형성 원리와 응용

  • Oh, Hyunchul (Department of Energy Engineering, Gyeongnam National University of Science and Technology (GNTECH)) ;
  • Lee, Young Sei (School of Nano & Materials Science and Engineering, Kyungpook National University) ;
  • Lee, Kiyoung (School of Nano & Materials Science and Engineering, Kyungpook National University)
  • 오현철 (경남과학기술대학교 에너지공학과) ;
  • 이영세 (경북대학교 나노소재공학부) ;
  • 이기영 (경북대학교 나노소재공학부)
  • Received : 2017.06.08
  • Accepted : 2017.06.30
  • Published : 2017.08.10

Abstract

In the present review, we provide an overview of the research trend of anodic $TiO_2$ nanostructures. To date, most anodic $TiO_2$ nanostructure formation has focused on the fluoride ion electrolyte system to form nanotube layers. Recently, a novel approach that describes the formation of thick, self-organized $TiO_2$ nanostructures was reported. These layers can be prepared on Ti metal by anodization in a hot organic/$K_2HPO_4$ electrolyte. This nanostructure consists of a strongly interlinked network of nanosized $TiO_2$, and thus provides a considerably higher specific surface area than that of using anodic $TiO_2$ nanotubes. This review describes the formation mechanism and novel properties of the new nanostructures, and introduces potential applications.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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