Department of Chemistry, Shantou University, Guangdong 515063, China.
Department of Chemistry, Shantou University, Guangdong 515063, China.
J Hazard Mater. 2018 Jul 5;353:151-157. doi: 10.1016/j.jhazmat.2018.02.029. Epub 2018 Feb 19.
Reduced graphite oxide (rGO) was incorporated into a metal organic framework (MOF) MIL-101(Cr) for the modification of carbon paste electrode. Taking advantages of the large surface area of MOF and the electrical conductivity of rGO, the resulted electrodes exhibited high sensitivity and reliability in the simultaneous electrochemical identification and quantification of catechol (CC) and hydroquinone (HQ). Specifically, in the mixture solution of catechol and hydroquinone (constant concentration of an analyte), the linear response ranges for catechol and hydroquinone were 10-1400 μM and 4-1000 μM, and detection limits were 4 μM and 0.66 μM (S/N = 3) for individual catechol and hydroquinone, respectively. Therefore, the relatively easy fabrication of modified CPE and its fascinating reliability towards HQ and CC detection may simulate more research interest in the applications of MIL-101(Cr)-rGO composites for electrochemical sensors.
还原氧化石墨（rGO）被掺入金属有机骨架（MOF）MIL-101（Cr）中，以修饰碳糊电极。利用 MOF 的大表面积和 rGO 的导电性，所得电极在同时电化学识别和定量检测儿茶酚（CC）和对苯二酚（HQ）方面表现出高灵敏度和可靠性。具体而言，在儿茶酚和对苯二酚的混合溶液中（分析物的恒定浓度），儿茶酚和对苯二酚的线性响应范围分别为 10-1400 μM 和 4-1000 μM，检测限分别为 4 μM 和 0.66 μM（S/N=3），分别用于单独的儿茶酚和对苯二酚。因此，修饰后的 CPE 的相对简单的制造及其对 HQ 和 CC 检测的迷人可靠性可能会激发更多对 MIL-101（Cr）-rGO 复合材料在电化学传感器应用中的研究兴趣。
