Enhanced triboelectric nanogenerators and triboelectric nanosensor using chemically modified TiO2 nanomaterials

Zong Hong Lin, Yannan Xie, Ya Yang, Sihong Wang, Guang Zhu, Zhong Lin Wang

Research output: Journal PublicationArticlepeer-review

229 Citations (Scopus)

Abstract

Mechanical energy harvesting based on triboelectric effect has been proven to be a simple, cost-effective, and robust method for electricity generation. In this study, we developed a rationally designed triboelectric nanogenerator (TENG) by utilizing the contact electrification between a polytetrafluoroethylene (PTFE) thin film and a layer of TiO2 nanomaterial (nanowire and nanosheet) array. The as-developed TENG was systematically studied and demonstrated as a self-powered nanosensor toward catechin detection. The high sensitivity (detection limit of 5 μM) and selectivity are achieved through a strong interaction between Ti atoms of TiO2 nanomaterial and enediol group of catechin. The output voltage and current density were increased by a factor of 5.0 and 2.9, respectively, when adsorbed with catechin of a saturated concentration, because of the charge transfer from catechin to TiO2. This study demonstrates the possibility of improving the electrical output of TENG through chemical modification.

Original languageEnglish
Pages (from-to)4554-4560
Number of pages7
JournalACS Nano
Volume7
Issue number5
DOIs
Publication statusPublished - 28 May 2013
Externally publishedYes

Keywords

  • catechin
  • charge transfer
  • chemical modification
  • nanosensor
  • TiO
  • triboelectric effect

ASJC Scopus subject areas

  • Materials Science (all)
  • Engineering (all)
  • Physics and Astronomy (all)

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