1. Enhancing the Efficiency of Graphene Oxide Reduction in Low-Power Digital Video Disc Drives by a Simple Precursor Heat Treatment
- Author
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Feng Wendou, Wei Wang, Zhang Yining, Xin Li, Miao Xiaofei, and Lin Songyue
- Subjects
Digital video disc ,Materials science ,business.industry ,Graphene ,Laser source ,Oxide ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Laser ,01 natural sciences ,0104 chemical sciences ,law.invention ,Power (physics) ,Reduction (complexity) ,chemistry.chemical_compound ,chemistry ,law ,Hardware_INTEGRATEDCIRCUITS ,Optoelectronics ,General Materials Science ,Thin film ,0210 nano-technology ,business - Abstract
Laser reduction of graphene oxide (GO) produces graphene effectively. As a low-power laser source, commercial digital video disc (DVD) drives provide a versatile platform to produce reduced graphene films in designed 2D patterns. However, research on how GO characteristics affect its laser reduction efficiency in DVD drives is rarely conducted. Here, we investigate how heating the GO dispersion affects the photoreduction process of GO films in a LightScribe DVD drive. Without noticeably changing the oxygen content, such mild heat treatment significantly improves GO's absorption in the visible region, resulting in significant enhancement on GO's laser reduction efficiency. We demonstrate that the laser reduction efficiency increases with the increasing treatment time. The enhanced reduction level greatly improves the performance of laser-scribed graphene electrodes in applications such as glucose sensors (with an optimal linear response range up to 2550 μM) and supercapacitors (with an optimal areal capacity of 1.37 mF cm
- Published
- 2019
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