TY  - JOUR
T1  - Electrochemical determination of 3-nitrophenol with a reduced graphene oxide modified screen printed carbon electrode
A1  - Muhammad, Nafiu
LA  - English
PB  - American Scientific Publishers
YR  - 2017
UL  - http://discoverylib.upm.edu.my/discovery/Record/oai:psasir.upm.edu.my:61694
AB  - An electrochemical sensor based on electrochemically reduced graphene oxide (ERGO) functionalized cetyltrimethylammonium bromide (CTAB) deposited on screen printed carbon electrode (SPCE) was developed for the detection of 3-nitrophenol. The ERGO/CTAB was prepared via drop casting technique on the screen printed carbon electrode (SPCE). The drop casted composite was then subjected to cyclic voltammetry technique to produce ERGO/CTAB. The modified electrode exhibits high electrocatalytic activity and good selectivity towards the reduction of 3-nitrophenol due to its excellent electrical conductivity, strong adsorptive ability and large effective surface area of ERGO functionalized CTAB. The enhancement factor of the ERGO/CTAB modified SPCE towards 3-nitrophenol was calculated to be 5.16 times higher compared to bare SPCE. Under optimum experimental conditions, the linearity of the sensor towards 3-nitrophenol concentration was in the range of 0.5 μM to 100 μM with the detection limit of 0.04 μM. Furthermore, the ERGO/CTAB sensor showed good reproducibility and also demonstrated efficiency in the detection of 3-nitrophenol in water samples.
ER  -