期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 32, 页码 29139-29146出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b08263
关键词
carbon nitride; carbon paper; freestanding electrode; photoelectrochemical cell; water splitting; dye degradation
资金
- Israel Science Foundation [1161/17]
- Planning & Budgeting Committee/Israel Council for Higher Education (CHE)
- National Natural Science Foundation of China [51802043]
- Fuel Choice Initiative (Prime Minister Office of Israel)
Freestanding electrodes composed of 2D materials are highly attractive for many applications such as batteries, membranes, actuators, optical devices, and other energy related devices owing to their low price, unique structure, high specific surface area, and excellent mechanical and electrical properties. Here, we report the facile large-scale fabrication of freestanding hierarchical carbon nitride/carbon electrodes (CN/C) by the in situ crystallization of CN precursors on conductive carbon paper, followed by thermal annealing. The resulting CN exhibits a vertically aligned morphology with a homogeneous layer distribution, improved crystallinity, and excellent contact with the carbon paper. The freestanding electrodes exhibit high electrical conductivity and good photoelectrochemical activity as anodes in water splitting photoelectrochemical cells. Furthermore, we show here as a proof-of-concept that the freestanding CN/C electrodes can be used as photoelectrocatalysts for the oxidative degradation of organic compounds in water, with enhanced activity compared to photocatalytic and electrocatalytic degradation, while the extracted electrons can be used for the simultaneous production of hydrogen at the cathode.
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