纳米氧化铈掺杂菊芋桔杆芯碳材料的制备及对日落黄的检测

文章采用热解经硝酸铈浸渍的菊芋秸秆芯（Jerusalem artichoke straw，JAS）制备负载氧化铈纳米颗粒的生物碳材料，表征 $ CeO_{2}/JAS $ 材料的理化性质，并分析其在电化学应用方面的潜力。该材料被修饰在电解质溶液栅控石墨烯场效应晶体管（solution-gated graphene field-effect transistor，SGGT）的栅极上，在模拟的软饮料体系中完成对色素的检测，其中对日落黄的响应最好，该修饰的栅极对日落黄的检测限为 300 nmol/L，灵敏度曲线斜率为 29.2。一系列实验结果表明， $ CeO_{2}/JAS $ 材料可以很好地提升对日落黄的检测性能。因此，该研究为其在电化学领域的应用提供了一定参考，并且对农业废弃物资源再利用与食品安全检测均具有一定的意义。

Biochar materials impregnated with cerium oxide nanoparticles were prepared by pyrolysis of $ Jerusalem $ artichoke straw (JAS) impregnated with cerium nitrate solution. The physical and chemical properties of $ CeO_{2}/JAS $ were characterized, and its potential for electrochemical applications was described. The biochar material was modified on the gate of the solution-gated graphene field-effect transistor (SGGT) to detect the pigment in the simulated soft drink system, and the response to sunset yellow was the best. The limit of detection of sunset yellow is 300 nmol/L, and the slope of sensitivity curve is 29.2. A series of experimental results demonstrated that $ CeO_{2}/JAS $ material can improve the detection performance of sunset yellow. This study provides reference for the application of the material in the field of electrochemistry, and is of significance for the reuse of agricultural waste resources and food safety detection.