An integrated nanoflower-like MoS2@CuCo2O4 heterostructure for boosting electrochemical glucose sensing in beverage. (1st December 2022)

• Record Type: Journal Article
• Authors: Wang, Huiting; Zhu, Wenxin; Xu, Ting; Zhang, Yanxin; Tian, Yujie; Liu, Xin; Wang, Jianlong; Ma, Min
• Is Part Of: Food chemistry. Volume 396(2022)
• Publication Date: 2022-12-01
• Subjects: MoS2@CuCo2O4 -- Synergistic effects -- Non-enzymatic sensor -- Glucose detection -- Beverage; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.133630
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: MoS2 @CuCo2 O4 heterostructure was synthesized by a simple hydrothermal strategy. MoS2 @CuCo2 O4 modified glassy carbon electrode was firstly used for glucose sensing. The synergy between MoS2 and CuCo2 O4 boosted electrocatalytic performance. The as-fabricated sensor was applied in beverage samples for glucose detection. Abstract: Excessive glucose in food poses a non-negligible threat to its inherent quality and human health, which makes it imperative to develop a highly sensitive sensor for real-time glucose detection. In this work, an integrated electrochemical glucose sensor based on a nanoflower-like MoS2 @CuCo2 O4 heterostructure was carefully constructed. Under optimal conditions, the as-fabricated sensor exhibited a high sensitivity of 1, 303 μA mM −1 cm −2 over a wide range of 0.5–393.0 μmol/L, accompanied by a low determination limit (0.5 μmol/L) and short response time (2.1 s). The favorable sensing performance of the MoS2 @CuCo2 O4 nanocomposite-modified electrode in electrochemical analyses was attributed to the introduction of unique nanoflower-like heterostructure and the synergistic effects between MoS2 and CuCo2 O4 . Furthermore, the satisfactory applicability of this sensor in beverages was confirmed. These results demonstrate that the MoS2 @CuCo2 O4 /GCE may be a promising platform for sensitive monitoring of glucose content in food samples.