Dimensional nanoarchitectonics of g-C3N4/Co nanocomposites for photo- and electro-chemical applications
Authors:
- Xingshuai Ji,
- Baogang Xu,
- Hongyu Zhang,
- Xiang Xia,
- Kang Ji,
- Alicja Szymska,
- Katarzyna Matras-Postolek,
- Ping Yang
Abstract
Cobalt ions were introduced during thermal polymerization at high temperature to prepare graphic carbon nitride (gC3N4) and Co composites. The interface engineering induced by Co ions resulted in the variation of morphology as well as photoand electro-chemical performance of the composite samples. Co-g-C3N4 composite samples revealed superior thin-nanosheet and nanotube morphologies at 680 and 750 °C, respectively. As separation centers, Co−N bonds at the interface promoted the transfer of charges and improved photocatalytic properties. Thus, the Co-g-C3N4 composite nanosheets revealed the best photocatalytic performance, in which the maximum degradation rate constant of rhodamine B reached to 0.126 min−1 , which was 9.7 times of that of pure g-C3N4 nanosheets. In contrast, the Co-g-C3N4 composite nanotubes with Co nanoparticles effectively enhanced the hydrogen evolution reaction. In the case of a current density of 10 mA cm−2 , the overpotential of the Co-g-C3N4 composite nanotubes was 249 mV and the Tafel slope was 80 mV dec−1 . In addition, the Co-g-C3N4 composite nanotubes revealed high charge−discharge capacity as a supercapacitor. This result provided a method for building g-C3N4-based photo- and electro-catalysts for various photo- and electro-chemical applications including photocatalytic degradation of organic pollutants, electrocatalytic hydrogen evolution reaction, and supercapacitors.
- Record ID
- CUT5c441878cfa2454bb02e7b11c64d5208
- Publication categories
- ;
- Author
- Journal series
- ACS Applied Nano Materials, ISSN 2574-0970
- Issue year
- 2022
- Vol
- 5
- No
- 8
- Pages
- 11731-11740
- Other elements of collation
- fot.; schem.; wykr.; Bibliografia (na s.) - 11739-11740; Bibliografia (liczba pozycji) - 51; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 5, Iss. 8
- Keywords in English
- Co, g-C3N4, nanotubes, photocatalysis, electrochemistry
- DOI
- DOI:10.1021/acsanm.2c02755 Opening in a new tab
- URL
- https://pubs.acs.org/doi/10.1021/acsanm.2c02755 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 20
- Score source
- journalList
- Score
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT5c441878cfa2454bb02e7b11c64d5208/
- URN
urn:pkr-prod:CUT5c441878cfa2454bb02e7b11c64d5208
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.