Novel one-pot hydrothermal fabrication of cuprous oxide-attapulgite/graphene for non-enzyme glucose sensing

作者：Zhang, Susu; Zhang, Guangli; He, Ping^*; Lei, Wen; Dong, Faqin; Yang, Dingming; Suo, Zhirong

来源：Analytical Methods, 2015, 7(6): 2747-2753.

DOI：10.1039/c4ay03001j

• NONENZYMATIC GLUCOSE
• MODIFIED ELECTRODE
• HYDROGEN-PEROXIDE
• GRAPHENE OXIDE
• ELECTROCHEMICAL DETERMINATION
• HYBRID ELECTRODE
• COMPOSITE FILM
• CARBON
• SENSOR
• NANOCOMPOSITES

A novel cuprous oxide-attapulgite/graphene based non-enzyme biosensor was constructed successfully for the detection of glucose. Graphite oxide and Cu2+-functionalized attapulgite were simultaneously reduced by hydrazine hydrate under mild hydrothermal conditions in one pot, and subsequently dried at 80 degrees C in air to obtain cuprous oxide-attapulgite/graphene composites. The composites were characterized by XRD, Raman spectroscopy, EDX and SEM. Due to the synergistic effect of cuprous oxide-attapulgite and graphene, the as-prepared composites presented excellent electrocatalytic performances. The cuprous oxide-attapulgite/graphene modified electrode exhibited sensitive linear amperometric responses to glucose in the concentration range of 4.0 x 10 (5) M to 3.0 x 10 (3) M (R = 0.996), and the detection limit was calculated to be 2.1 x 10(-6) M. The as-prepared modified electrode was highly selective for glucose in the presence of common interfering species in biological fluids, such as dopamine, ascorbic acid and uric acid.

• 出版日期2015
• 单位西南科技大学