rGO/MoS_(2)/NiCo_(2)O_(4)对H_(2)O_(2)的电化学传感性能  

Electrochemical sensing performance of rGO/MoS_(2)/NiCo_(2)O_(4) for H_(2)O_(2)

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作  者:隋爽 陈世界[1] 李金龙[1] 张慧书 隋国哲[1] 景丽萍 吕仁江[1] 孙冬雪 付韵雯 李金玉 SUI Shuang;CHEN Shijie;LI Jinlong;ZHANG Huishu;SUI Guozhe;JING Liping;LüRenjiang;SUN Dongxue;FU Yunwen;LI Jinyu(School of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China)

机构地区:[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006

出  处:《高师理科学刊》2025年第1期46-52,共7页Journal of Science of Teachers'College and University

基  金:黑龙江省省属高等学校基本科研业务费科研项目(145309320);齐齐哈尔大学教育科学研究项目(GJQTYB202311);黑龙江省高等教育教学改革研究项目(SJGYB2024518)。

摘  要:以(NH4)2MoO4为钼源,以CH4N2S作为合成MoS_(2)的硫源,采用传统水热法在180℃下与r GO反应24 h.然后以CoCl_(2)和NiCl_(2)作为钴源和镍源制备NiCo_(2)O_(4).再将NiCo_(2)O_(4)与先前制备的r GO/MoS2再次采用水热法复合,洗涤烘干后通过煅烧法合成rGO/MoS_(2)/NiCo_(2)O_(4).通过XRD,XPS,SEM,TEM对其形貌、微观组成结构进行表征,通过循环伏安法(CV)对该电极材料的电化学催化性能进行评估.结果表明,该复合材料比单一材料具有更优异的对H_(2)O_(2)的电化学传感性能.其对H_(2)O_(2)检测的线性范围为10~1 000 mmol/L,最低检测限为0.5μmol/L(S/N=3),并且该传感器具有优异的选择性和重现性.在实际牛奶样品的加标实验中的回收率达到98.60%~101.23%.该研究可为无酶电化学检测H_(2)O_(2)提供支持.Ammonium molybdate was used as the molybdenum source,thiourea was used as the sulfur source for the synthesis of MoS_(2),and the hydrothermal method was used to react with rGO at 180℃for 24 h.Then,NiCo_(2)O_(4) was prepared with cobalt and nickel nitrate as the cobalt source and nickel source,Nickel cobalt oxide is prepared by hydrothermal compounding with the previously prepared precursor.After washing and drying,rGO/MoS_(2)/NiCo_(2)O_(4) was synthesized by calcination.Its morphology and microstructure were characterized by XRD,XPS,SEM,TEM,and the electrochemical catalytic performance of the electrode material was evaluated by cyclic voltammetry(CV).The results show that the composite has better electrochemical sensing performance for H_(2)O_(2) than a single material.The linear range of H_(2)O_(2) detection is 10~1000 mmol/L,and the minimum detection limit is 0.5μmol/L(S/N=3),and the sensor has excellent selectivity and reproducibility.In the spike test of actual milk samples,the recovery rate reached 98.60%~101.23%,Which can provide important support for the enzyme-free electrochemical detection of hydrogen peroxide.

关 键 词:rGO/MoS_(2)/NiCo_(2)O_(4) H_(2)O_(2) 水热法 传感器 电化学性能 

分 类 号:O65[理学—分析化学]

 

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