TY - JOUR ID - 664 TI - Cu decorated multiwalled carbon nanotubes: Application to electrocatalytic oxidation and determination of 4-nitrophenol in river water samples by square-wave voltammetry JO - Advances in Environmental Technology JA - AET LA - en SN - 2476-6674 AU - Jalali, Fahimmeh AU - AbdAli, Ali Taher AU - Hasanvand, Zahra AD - Department of Chemistry, Razi University, Kermanshah, Iran AD - Depatment of Chemistry, Razi University, Kermanshah, Iran AD - Departmen of Chemistry, Razi University, Kermanshah, Iran Y1 - 2018 PY - 2018 VL - 4 IS - 1 SP - 51 EP - 60 KW - 4-Nitrophenol KW - Square wave voltammetry KW - Copper nanoparticles KW - Multi-Walled Carbon Nanotubes KW - River water samples DO - 10.22104/aet.2018.2441.1122 N2 - A simple and fast electrochemical method was described and evaluated for the determination of hazardous compound, 4-nitrophenol. In this work, trace amounts of 4- nitrophenol were determined by square – wave voltammetry. A glassy carbon electrode was modified with multi-walled carbon nanotubes and copper nanoparticles. A synergistic effect was observed between Cu nanoparticles and carbon nanotubes which resulted in enhanced oxidation peak current of 4-nitrophenol. The modified electrode showed more sensitivity towards 4-nitrophenol compared to unmodified one. A wide linear concentration range from 0.2 to 298.0 μM was obtained for 4-nitrophenol with a detection limit of 0.06 μM. Reproducibility and repeatability of the method were evaluated for determination of 4-nitrophenol (0.1 mM) as 3.47% and 2.30%, respectively (relative standard deviation, RSD %), which are acceptable. The method was applied to the analysis of 4- nitrophenol (22.2 μM) in spiked river water samples, successfully. Simplicity, sensitivity, selectivity and high efficiency of the proposed method can be used in routine analysis of trace amounts of 4-nitrophenol in polluted waters. UR - https://aet.irost.ir/article_664.html L1 - https://aet.irost.ir/article_664_835e247a1c7e66d0913f0c34db5cf7d0.pdf ER -