采用十六烷基三甲基溴化铵(CTAB)对活性炭(AC)进行改性,增强活性炭电极的亲水性和电吸附性能。采用扫描电镜、比表面积及孔径分析仪、接触角测量仪、傅里叶变换红外光谱仪和电化学工作站等技术手段对改性前后材料的性能进行了表征和分析。结果表明:改性后CTAB-AC材料的比表面积相比AC有所降低,但其表面亲水性明显改善,并且CTAB-AC电极的电吸附性能明显提高,比电容由原样的66.55F/g增加到96.57F/g,提高了45.11%,库仑效率由56%提高到83.33%,离子去除率由35.48%增至51.85%,为电吸附电极材料的改性制备研究提供了参考依据。
activated carbon (AC) was modified with cetyltrimethyl ammonium bromide (CTAB) to enhance the hydrophilicity and electro-adsorption properties of the activated carbon electrode.The properties of the materials before and after modification were characterized and analyzed by scanning electron microscope,specific surface area and aperture analyzer,contact angle measuring instrument,fourier transform infrared spectrometer,electrochemical workstation and so on.the results shown that the specific surface area of the modified CTAB-AC material was lower than that of AC,but its surface hydrophilicity was obviously improved,and the electro-adsorption performance of the CTAB-AC electrode was obviously improved.The specific capacitance was increased from 66.55F·g-1 to 96.57F·g-1,which was increased by 45.11%.The coulombic efficiency was increased from 56% to 83.33%,and the removal ion rate was increased from 35.48% to 51.85%.A reference for the study on the preparation of electroadsorption materials was provided.
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基金资助
陕西省科技厅工业公关资助项目(2017GY-151);陕西省“三秦学者”基金项目(2017-4);西安工程大学研究生创新基金项目(chx2020025);陕西省科技厅社会发展领域项目(2020SF-435);柯桥纺织产业创新研究院(19KQYB04)
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