Enhanced Triboelectric Nanogenerators and Triboelectric Nanosensor Using Chemically Modified TiO2 Nanomaterials
- 23 April 2013
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 7 (5), 4554-4560
- https://doi.org/10.1021/nn401256w
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.This publication has 30 references indexed in Scilit:
- Progress in nanogenerators for portable electronicsMaterials Today, 2012
- Nanotechnology‐Enabled Energy Harvesting for Self‐Powered Micro‐/NanosystemsAngewandte Chemie, 2012
- Transparent Triboelectric Nanogenerators and Self-Powered Pressure Sensors Based on Micropatterned Plastic FilmsNano Letters, 2012
- Pyroelectric Nanogenerators for Harvesting Thermoelectric EnergyNano Letters, 2012
- Flexible triboelectric generatorNano Energy, 2012
- A Hybrid Piezoelectric Structure for Wearable NanogeneratorsAdvanced Materials, 2012
- Microfibre–nanowire hybrid structure for energy scavengingNature, 2008
- Complex thermoelectric materialsNature Materials, 2008
- Coaxial silicon nanowires as solar cells and nanoelectronic power sourcesNature, 2007
- A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 filmsNature, 1991