期刊
APPLIED SURFACE SCIENCE
卷 455, 期 -, 页码 403-409出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.06.014
关键词
g-C3N4; MOF; ZIF-8; Photocatalytic hydrogen evolution; Water splitting
类别
资金
- National Natural Science Foundation of China [51672113]
- Six Talent Peaks Project in Jiangsu Province [2015-XCL-026]
- Natural Science Foundation of Jiangsu Province [BK20171299]
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University [SKLPEE-KF201705]
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology [2016-KF-10]
The development of low-cost and noble metal-free photocatalytic materials with precisely controlled morphologies and interfaces is vital to achieving highly efficient solar-to-fuel conversion. We herein report the fabrication of novel metal-organic framework (MOF)/g-C3N4 heterostructured materials with well-defined micro-/nanostructures and intimate interfacial contact. Zeolitic imidazolate framework-8 (ZIF-8) nanoparticles are found to be evenly anchored on modified rod-like g-C3N4 materials. The resultant hybrid materials demonstrate the integration of two components and show enhanced light-harvesting property in the visible light region. ZIF-8/g-C3N4 composite materials have been employed as the catalysts for solar-driven photocatalytic hydrogen evolution from water splitting. Under light emitting diode (LED) illumination, ZIF-8/g-C3N4 composite photocatalysts exhibit significant hydrogen-evolving performance in comparison to bulk ZIF-8 material. The enhanced hydrogen production efficiency can be ascribed to synergistic improvements in electron-hole separation, charge transportation and redox capability. This synthetic strategy can be extended to the design and controllable synthesis of a variety of MOF-based composite materials for energy and environmental applications.
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