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Facile synthesis of O-doped carbon nitride nanofibers for two-step single-electron oxygen reduction to H2O2.
- Source :
- New Journal of Chemistry; 12/14/2023, Vol. 47 Issue 46, p21371-21380, 10p
- Publication Year :
- 2023
-
Abstract
- Elemental doping is an effective and attractive method for improving the photocatalytic performance. Here we synthesized three types of O-doped carbon nitride nanofibers (ACN, CCN, and LCN) through a one-pot simple solvothermal process by using L -arginine, L -cysteine and L -lysine as O dopants into pristine carbon nitride nanofibers (CNF). The three O-doped samples exhibited enhanced light harvesting capacity and satisfactory O<subscript>2</subscript> adsorption and activation ability, which is beneficial for the following H<subscript>2</subscript>O<subscript>2</subscript> generation process. The photocatalytic H<subscript>2</subscript>O<subscript>2</subscript> generation rates of the optimal ACN, CCN, and LCN samples are 156.9, 166.2 and 107.2 μmol g<superscript>−1</superscript> h<superscript>−1</superscript>, which are higher than that of pristine CNF (72.3 μmol g<superscript>−1</superscript> h<superscript>−1</superscript>). Especially, CCN shows an apparent quantum efficiency of 4.66% at 420 nm. The results of photocurrent measurements and photoluminescence spectra indicate that the charge carrier recombination was effectively inhibited in the O-doped samples. Our research provides an effective and environmentally friendly strategy to improve the H<subscript>2</subscript>O<subscript>2</subscript> generation performance by using common compounds in human life. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 47
- Issue :
- 46
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 173860884
- Full Text :
- https://doi.org/10.1039/d3nj03170e