Ultrasensitive and selective 4-aminophenol chemical sensor development based on nickel oxide nanoparticles decorated carbon nanotube nanocomposites for green environment  

作　　者：Mohammad Musarraf Hussain 

机构地区：[1]Chemistry Department,Faculty of Science,King Abdulaziz University,Jeddah 21589,P.O.Box 80203,Saudi Arabia [2]Center of Excellence for Advanced Material Research(CEAMR),King Abdulaziz University,Jeddah 21589,P.O.Box 80203,Saudi Arabia

出　　处：《Journal of Environmental Sciences》2017年第3期27-38,共12页环境科学学报（英文版）

基　　金：Center of Excellence for Advanced Materials Research(CEAMR),King Abdulaziz University,Jeddah is highly acknowledged for instrumental and technical supports

摘　　要：Nickel oxide nanoparticles decorated carbon nanotube nanocomposites （NiO.CNT NCs） were prepared in a basic medium by using facile wet-chemical routes. The optical, morphological, and structural properties of NiO.CNT NCs were characterized using Fourier transformed infra-red （FT-IR）, Ultra-violet visible （UV/Vis） spectroscopy, field-emission scanning electron microscopy （FESEM）, X-ray energy dispersed spectroscopy （XEDS）, X-ray photoelectron spectroscopy （XPS）, and powder X-ray diffraction （XRD） methods. Selective 4-aminophenol （4-AP） chemical sensor was developed by a fiat glassy carbon electrode （GCE, surface area： 0.0316 cm2） fabricated with a thin-layer of NCs. Electrochemical responses including higher sensitivity, large dynamic range （LDR）, limit of detection （LOD）, and long-term stability towards 4-AP were obtained using the fabricated chemical sensors. The calibration curve was found linear （R2 = 0.914） over a wide range of 4-AP concentration （0.1 nmol/L-0.1 tool/L）. In perspective of slope （2 x 10.5 gA/gM）, LOD and sensitivity were calculated as 15.0 ＋ 0.1 pM and -6.33 - 10.4 gA/（gM.cm） respectively. The synthesized NiO.CNT NCs using a wet-chemical method is a significant route for the development of ultrasensitive and selective phenolic sensor based on nano-materials for environmental toxic substances. It is suggested that a pioneer and selective development of 4-AP sensitive sensor using Ni0.CNT NCs by a facile and reliable current us voltage （I-V） method for the major application of toxic agents in biological, green environmental, and health-care fields in near future.Nickel oxide nanoparticles decorated carbon nanotube nanocomposites （NiO.CNT NCs） were prepared in a basic medium by using facile wet-chemical routes. The optical, morphological, and structural properties of NiO.CNT NCs were characterized using Fourier transformed infra-red （FT-IR）, Ultra-violet visible （UV/Vis） spectroscopy, field-emission scanning electron microscopy （FESEM）, X-ray energy dispersed spectroscopy （XEDS）, X-ray photoelectron spectroscopy （XPS）, and powder X-ray diffraction （XRD） methods. Selective 4-aminophenol （4-AP） chemical sensor was developed by a fiat glassy carbon electrode （GCE, surface area： 0.0316 cm2） fabricated with a thin-layer of NCs. Electrochemical responses including higher sensitivity, large dynamic range （LDR）, limit of detection （LOD）, and long-term stability towards 4-AP were obtained using the fabricated chemical sensors. The calibration curve was found linear （R2 = 0.914） over a wide range of 4-AP concentration （0.1 nmol/L-0.1 tool/L）. In perspective of slope （2 x 10.5 gA/gM）, LOD and sensitivity were calculated as 15.0 ＋ 0.1 pM and -6.33 - 10.4 gA/（gM.cm） respectively. The synthesized NiO.CNT NCs using a wet-chemical method is a significant route for the development of ultrasensitive and selective phenolic sensor based on nano-materials for environmental toxic substances. It is suggested that a pioneer and selective development of 4-AP sensitive sensor using Ni0.CNT NCs by a facile and reliable current us voltage （I-V） method for the major application of toxic agents in biological, green environmental, and health-care fields in near future.

关 键 词：NiO decorated CNT nanocomposltesOptical evaluationFabricationSensitivity4-AminophenolI-V method 

分 类 号：X[环境科学与工程]