Oxidative Polyoxometalates Modified Graphitic Carbon Nitride for Visible-Light CO2Reduction.
Developing a photocatalysis system for converting CO2to valuable fuels or chemicals is a promising strategy to address global warming and fossil fuel consumption. Exploring photocatalysts with high-performance and low-cost has been two ultimate goals toward photoreduction of CO2. Herein, noble-metal-free polyoxometalates (Co4) with oxidative ability was first introduced into g-C3N4resulted in inexpensive hybrid materials (Co4@g-C3N4) with staggered band alignment. The staggered composited materials show a higher activity of CO2reduction than bare g-C3N4. An optimized Co4@g-C3N4hybrid sample exhibited a high yield (107 μmol g-1h-1) under visible-light irradiation (λ ≥ 420 nm), meanwhile maintaining high selectivity for CO production (94%). After 10 h of irradiation, the production of CO reached 896 μmol g-1. Mechanistic studies revealed the introduction of Co4 not only facilitate the charge transfer of g-C3N4but greatly increased the surface catalytic oxidative ability. This work creatively combined g-C3N4with oxidative polyoxometalates which provide novel insights into the design of low-cost photocatalytic materials for CO2reduction.
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Jie
J
Zhou
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Weichao
W
Chen
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Chunyi
C
Sun
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Lu
L
Han
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Chao
C
Qin
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Mengmeng
M
Chen
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Xinlong
http://orcid.org/0000-0002-5758-6351
X
Wang
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Enbo
http://orcid.org/0000-0001-5236-7566
E
Wang
Institute of Functional Material Chemistry, National & Local United Engineering Laboratory for Power Batteries, Northeast Normal University , Changchun, 130024 Jilin, People's Republic of China.
Zhongmin
http://orcid.org/0000-0002-3342-1966
Z
Su
composited materials; graphitic carbon nitride; photocatalysis; polyoxometalates; reduction of carbon dioxide