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SEM images of pristine SiC powder (a), Graphene covered SiC heterojunction powder (b), as well as magnified SEM images of SiC powder (c), and GCSP (d).
(Color online) Raman spectra of pristine SiC powder (solid line) and GCSP (dotted line). The inset is Raman signal of graphene after subtracting SiC’s signal from GCSP.
(Color online) Absorption spectra of Rh B after different photo degradation durations by SiC powder (a) and GCSP (b).
(Color online) The relative remnant concentration of the partly degradated Rh B versus irradiation duration. The inset is the natural logarithm of the ratio between the remnant concentration and the initial concentration of Rh B versus irradiation time.
(Color online) Schematic mechanism of photocatalystic process of GCSP for degradation of Rh B.
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