期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 29, 页码 3661-3667出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201203732
关键词
hydrogen-bonded networks; cooperative assembly; carbon nitride; photocatalysis
类别
资金
- Project Light2Hydrogen of the BMBF [03IS2071D]
- KBSI [T31605]
- Brain Korea 21 (BK21)
- Advanced Biomass R&D Center of Global Frontier Project [ABC-2011-0031354]
- Ministry of Education, Science, and Tech-nology of Korea
- University of California Lab Fees Research Program
Graphitic carbon nitride (g-CN) is a promising heterogeneous metal-free catalyst for organic photosynthesis, solar energy conversion, and photodegradation of pollutants. Its catalytic performance is easily adjustable by modifying texture, optical, and electronic properties via nanocasting, doping, and copolymerization. However, simultaneous optimization has yet to be achieved. Here, a facile synthesis of mesoporous g-CN using molecular cooperative assembly between triazine molecules is reported. Flower-like, layered spherical aggregates of melamine cyanuric acid complex (MCA) are formed by precipitation from equimolecular mixtures in dimethyl sulfoxide (DMSO). Thermal polycondensation of MCA under nitrogen at 550 degrees C produces mesoporous hollow spheres comprised of tri-s -triazine based g-CN nanosheets (MCA-CN) with the composition of C3N4.14H1.98. The layered structure succeeded from MCA induces stronger optical absorption, widens the bandgap by 0.16 eV, and increases the lifetime of photoexcited charge carriers by twice compared to that of the bulk g-CN, while the chemical structure remains similar to that of the bulk g-CN. As a result of these simultaneous modifi cations, the photodegradation kinetics of rhodamine B on the catalyst surface can be improved by 10 times.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据