Polarization Engineering of Covalent Triazine Frameworks for Highly Efficient Photosynthesis of Hydrogen Peroxide from Molecular Oxygen and Water
Beijing Institute of Technology · Technical Institute of Physics and Chemistry · +5 more institutions
Abstract
Abstract Two‐electron oxygen photoreduction to hydrogen peroxide (H 2 O 2 ) is seriously inhibited by its sluggish charge kinetics. Herein, a polarization engineering strategy is demonstrated by grafting (thio)urea functional groups onto covalent triazine frameworks (CTFs), giving rise to significantly promoted charge separation/transport and obviously enhanced proton transfer. The thiourea‐functionalized CTF (Bpt‐CTF) presents a substantial improvement in the photocatalytic H 2 O 2 production rate to 3268.1 µmol h −1 g −1 with no sacrificial agents or cocatalysts that is over an order of magnitude higher than unfunctionalized CTF (Dc‐CTF), and a remarkable quantum efficiency of 8.6% at 400 nm. Mechanistic…
Citation impact
- FWCI
- 17.60
- Percentile
- 100%
- References
- 63
Authors
10- CWChongbei Wu
Beijing Institute of Technology, Technical Institute of Physics and Chemistry
- ZTZhenyuan Teng
Kyushu Institute of Technology
- CYChao Yang
Fudan University
- FCFangshuai Chen
Beijing Institute of Technology, Technical Institute of Physics and Chemistry
- HBHong Bin Yang
Nanyang Technological University
Topics & keywords
- Thiourea
- Hydrogen peroxide
- Photochemistry
- Triazine
- Oxygen evolution
- Materials science
- Photocatalysis
- Covalent bond
- Clean water and sanitation
Funding
- AFAgency for Science, Technology and ResearchAward: A20E5c0080
- NNNational Natural Science Foundation of ChinaAwards: 21905025, 21975051, 22025502, 22175022
- JSJapan Society for the Promotion of ScienceAward: 20J13064
- NKNational Key Research and Development Program of ChinaAwards: 2017YFA0206901, 2018YFA0209401