Issue 9, 2019

Facile synthesis of carbon nanobranches towards cobalt ion sensing and high-performance micro-supercapacitors

Abstract

We present a facile strategy for fabricating a new type of one-dimensional (1D) carbon nanomaterial named carbon nanobranches (CNBs) covered with botryoidal carbon dots (CDs) by direct pyrolysis of a green precursor (starch). The resultant CNBs display both photoluminescence and electrical conductivity and can be assembled into chemical sensors and energy-storage devices. In terms of their bright photoluminescence, CNBs with a fabulous crystalline structure are utilized as fluorescent probes to sensitively and selectively detect Co2+ with a very low detection limit of 2.85 nM and a wide linear concentration range from 10 nM to 1 mM. Moreover, an efficient micro-supercapacitor (micro-SC) is constructed based on conductive CNB fibers produced via a customized microfluidic spinning technique. The micro-SCs exhibit a large specific capacitance of 201.4 mF cm−2, an energy density of 4.5 μW h cm−2 and high cycling stability, and can successfully power 19 light-emitting diodes (LEDs). The main purpose of this paper is to offer a perspective into simplifying the connecting of research and industry by starting from green carbon-based materials.

Graphical abstract: Facile synthesis of carbon nanobranches towards cobalt ion sensing and high-performance micro-supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
25 mar. 2019
Accepted
19 jul. 2019
First published
19 jul. 2019
This article is Open Access
Creative Commons BY license

Nanoscale Adv., 2019,1, 3614-3620

Facile synthesis of carbon nanobranches towards cobalt ion sensing and high-performance micro-supercapacitors

Q. Chen, X. Wu, H. Cheng, Q. Li and S. Chen, Nanoscale Adv., 2019, 1, 3614 DOI: 10.1039/C9NA00181F

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