Journal
NANOMATERIALS
Volume 7, Issue 12, Pages -Publisher
MDPI AG
DOI: 10.3390/nano7120450
Keywords
g-C3N4/rGO/MnO2; sheet-on-sheet; covalent coupling; in situ formation; synergistic effect
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Funding
- Science Foundation of Nanjing Institute of Technology [ZKJ201402, ZKJ201501]
- natural science foundation of Jiangsu Province [BK20160773]
- National Natural Science Foundation of China [NSFC 21603102]
- Extra-curricular Academic Scientific Research Fund of Nanjing University of Science and Technology and Undergraduate Research Training Millions Talents' Plan
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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We unprecedentedly report that layered MnO2 nanosheets were in situ formed onto the surface of covalently bonded graphitic carbon nitride/reduced graphene oxide nanocomposite (g-C3N4/rGO), forming sheet-on-sheet structured two dimension (2D) graphitic carbon nitride/reduced graphene oxide/layered MnO2 ternary nanocomposite (g-C3N4/rGO/MnO2) with outstanding catalytic properties on thermal decomposition of ammonium perchlorate (AP). The covalently bonded g-C3N4/rGO was firstly prepared by the calcination of graphene oxide-guanidine hydrochloride precursor (GO-GndCl), following by its dispersion into the KMnO4 aqueous solution to construct the g-C3N4/rGO/MnO2 ternary nanocomposite. FT-IR, XRD, Raman as well as the XPS results clearly demonstrated the chemical interaction between g-C3N4, rGO and MnO2. TEM and element mapping indicated that layered g-C3N4/rGO was covered with thin MnO2 nanosheets. Furthermore, the obtained g-C3N4/rGO/MnO2 nanocomposite exhibited promising catalytic capacity on thermal decomposition of AP. Upon addition of 2 wt % g-C3N4/rGO/MnO2 ternary nanocomposite as catalyst, the thermal decomposition temperature of AP was largely decreased up by 142.5 degrees C, which was higher than that of pure g-C3N4, g-C3N4/rGO and MnO2, respectively, demonstrating the synergistic catalysis of the as-prepared nanocomposite.
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