Fabrication and Photocatalytic Application of Aromatic Ring Functionalized Melem Oligomers

Chu Yen Hsu, Kao-Shuo Chang

研究成果: Article

3 引文 (Scopus)

摘要

This paper reports the fabrication of aromatic ring functionalized melem oligomers (AFMOs) and the study of their synergistic photodegradation properties. Highlights include the following: (1) the fabrication of various carbon nitrides (CNs) through thermal polycondensation; (2) the intrinsic modulation of the molecular nature of polymeric CNs using different amounts of melamine precursors; and (3) the extrinsic functionalization of melem oligomers (MOs) with aromatic rings, which enhanced visible light absorption, reduced dark absorption, and enhanced π electron delocalization, thus inhibiting electron-hole (e--h+) pair recombination. X-ray diffraction and UV-vis spectroscopy qualitatively indicated the fabrication of MOs after washing with 135 °C dimethyl sulfoxide. 15N solid state nuclear magnetic resonance spectroscopy revealed that the MO sample consisted mainly of trimers before and after aromatic ring functionalization. Fourier-transform infrared spectroscopy indicated the structures of polymerized heptazine rings and the effective functionalization of aromatic rings. A scavenger study demonstrated that •O2 - predominated in the AFMO photodegradation mechanism of methylene blue solutions. The AFMO sample exhibited a photodegradation rate constant of approximately 9.8 × 10-3 min-1, which was nearly 8 times higher than that of melon. The superior photocatalytic properties were attributed to the substantial improvement in visible light absorption and poor e--h+ pair recombination because of π electron delocalization, which were verified using UV-vis and photoluminescence spectra, respectively.

原文English
頁(從 - 到)3506-3512
頁數7
期刊Journal of Physical Chemistry C
122
發行號6
DOIs
出版狀態Published - 2018 二月 15

指紋

oligomers
Oligomers
Fabrication
fabrication
rings
Photodegradation
Carbon nitride
carbon nitrides
Light absorption
electromagnetic absorption
Electrons
Melamine
Dimethyl sulfoxide
Methylene Blue
melamine
Polycondensation
Dimethyl Sulfoxide
Ultraviolet spectroscopy
Washing
methylene blue

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

引用此文

@article{8a13b4bca2304e549b5bc8875e4e0a38,
title = "Fabrication and Photocatalytic Application of Aromatic Ring Functionalized Melem Oligomers",
abstract = "This paper reports the fabrication of aromatic ring functionalized melem oligomers (AFMOs) and the study of their synergistic photodegradation properties. Highlights include the following: (1) the fabrication of various carbon nitrides (CNs) through thermal polycondensation; (2) the intrinsic modulation of the molecular nature of polymeric CNs using different amounts of melamine precursors; and (3) the extrinsic functionalization of melem oligomers (MOs) with aromatic rings, which enhanced visible light absorption, reduced dark absorption, and enhanced π electron delocalization, thus inhibiting electron-hole (e--h+) pair recombination. X-ray diffraction and UV-vis spectroscopy qualitatively indicated the fabrication of MOs after washing with 135 °C dimethyl sulfoxide. 15N solid state nuclear magnetic resonance spectroscopy revealed that the MO sample consisted mainly of trimers before and after aromatic ring functionalization. Fourier-transform infrared spectroscopy indicated the structures of polymerized heptazine rings and the effective functionalization of aromatic rings. A scavenger study demonstrated that •O2 - predominated in the AFMO photodegradation mechanism of methylene blue solutions. The AFMO sample exhibited a photodegradation rate constant of approximately 9.8 × 10-3 min-1, which was nearly 8 times higher than that of melon. The superior photocatalytic properties were attributed to the substantial improvement in visible light absorption and poor e--h+ pair recombination because of π electron delocalization, which were verified using UV-vis and photoluminescence spectra, respectively.",
author = "Hsu, {Chu Yen} and Kao-Shuo Chang",
year = "2018",
month = "2",
day = "15",
doi = "10.1021/acs.jpcc.7b12539",
language = "English",
volume = "122",
pages = "3506--3512",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "6",

}

TY - JOUR

T1 - Fabrication and Photocatalytic Application of Aromatic Ring Functionalized Melem Oligomers

AU - Hsu, Chu Yen

AU - Chang, Kao-Shuo

PY - 2018/2/15

Y1 - 2018/2/15

N2 - This paper reports the fabrication of aromatic ring functionalized melem oligomers (AFMOs) and the study of their synergistic photodegradation properties. Highlights include the following: (1) the fabrication of various carbon nitrides (CNs) through thermal polycondensation; (2) the intrinsic modulation of the molecular nature of polymeric CNs using different amounts of melamine precursors; and (3) the extrinsic functionalization of melem oligomers (MOs) with aromatic rings, which enhanced visible light absorption, reduced dark absorption, and enhanced π electron delocalization, thus inhibiting electron-hole (e--h+) pair recombination. X-ray diffraction and UV-vis spectroscopy qualitatively indicated the fabrication of MOs after washing with 135 °C dimethyl sulfoxide. 15N solid state nuclear magnetic resonance spectroscopy revealed that the MO sample consisted mainly of trimers before and after aromatic ring functionalization. Fourier-transform infrared spectroscopy indicated the structures of polymerized heptazine rings and the effective functionalization of aromatic rings. A scavenger study demonstrated that •O2 - predominated in the AFMO photodegradation mechanism of methylene blue solutions. The AFMO sample exhibited a photodegradation rate constant of approximately 9.8 × 10-3 min-1, which was nearly 8 times higher than that of melon. The superior photocatalytic properties were attributed to the substantial improvement in visible light absorption and poor e--h+ pair recombination because of π electron delocalization, which were verified using UV-vis and photoluminescence spectra, respectively.

AB - This paper reports the fabrication of aromatic ring functionalized melem oligomers (AFMOs) and the study of their synergistic photodegradation properties. Highlights include the following: (1) the fabrication of various carbon nitrides (CNs) through thermal polycondensation; (2) the intrinsic modulation of the molecular nature of polymeric CNs using different amounts of melamine precursors; and (3) the extrinsic functionalization of melem oligomers (MOs) with aromatic rings, which enhanced visible light absorption, reduced dark absorption, and enhanced π electron delocalization, thus inhibiting electron-hole (e--h+) pair recombination. X-ray diffraction and UV-vis spectroscopy qualitatively indicated the fabrication of MOs after washing with 135 °C dimethyl sulfoxide. 15N solid state nuclear magnetic resonance spectroscopy revealed that the MO sample consisted mainly of trimers before and after aromatic ring functionalization. Fourier-transform infrared spectroscopy indicated the structures of polymerized heptazine rings and the effective functionalization of aromatic rings. A scavenger study demonstrated that •O2 - predominated in the AFMO photodegradation mechanism of methylene blue solutions. The AFMO sample exhibited a photodegradation rate constant of approximately 9.8 × 10-3 min-1, which was nearly 8 times higher than that of melon. The superior photocatalytic properties were attributed to the substantial improvement in visible light absorption and poor e--h+ pair recombination because of π electron delocalization, which were verified using UV-vis and photoluminescence spectra, respectively.

UR - http://www.scopus.com/inward/record.url?scp=85042165828&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85042165828&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.7b12539

DO - 10.1021/acs.jpcc.7b12539

M3 - Article

AN - SCOPUS:85042165828

VL - 122

SP - 3506

EP - 3512

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 6

ER -