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Insights into high-efficient removal of tetracycline by a codoped mesoporous carbon adsorbent

Chinese Journal of Chemical Engineering 2022年第4期35卷 148-156页

作者： Xinyu Chen Shuo Shi Ximei Han Min Li Ying Nian Jing Sun Wentao Zhang Tianli Yue Jianlong Wang College of Food Science and Engineering Northwest A&F UniversityYangling 712100China Qinghai Provincial Key Laboratory of Qinghai-Tibet Plateau Biological Resources Northwest Institute of Plateau BiologyChinese Academy of SciencesXining 810008China

Adsorbents with simple preparation and high surface area have become increasingly prevalent for the removal of organic ***,a carbon nanoplate codoped by Co and N elements with abundant ordered mesoporous(Co/N-MCs)was applied as an adsorbent for tetracycline *** integrated advantages of ordered mesopores on carbon-based structures and N-doping inducing the strengthenedπ–πdispersion and generation of pyridinic N,as well as cobaltic nanoparticles embedded in carbon nanoplates,the Co/N-MCs was tailored for high efficiently absorbing tetracycline viaπ-πinteraction,Lewis acid-base interaction,metal complexation and electrostatic *** Co/N-MCs had the advantages of high surface area,porous structure,plenty adsorption sites,and easy *** such,the as-prepared Co/N-MCs adsorbents significantly enhanced tetracycline removal performance with a maximum adsorption capacity of 344.83 mg·g^(-1) at pH 6 and good reusability,which was finally applied to removal tetracycline from tap water ***,the adsorption process towards tetracycline hydrochloride could be well attributed to the pseudo-second-order kinetic and Langmuir isotherm *** with traditional carbon-based adsorbents,it owns a simpler synthesis method and a higher adsorption capacity,as well as it is a promising candidate for water purification.

关键词： Mechanism Carbon cobalt/nitrogen codoping Tetracycline Adsorption

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