Zinc ion mediated synthesis of cuprous oxide crystals for non-enzymatic glucose detection,Journal of Materials Chemistry B

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Zinc ion mediated synthesis of cuprous oxide crystals for non-enzymatic glucose detection
Journal of Materials Chemistry B ( IF 6.1 ) Pub Date : 2017-10-02 00:00:00 , DOI: 10.1039/c7tb01971h
Jian Lv _{1,

2,

3,

4,

5} , Chuncai Kong _{1,

2,

3,

4,

5} , Xuanxuan Hu _{1,

2,

3,

4,

5} , Xiaojing Zhang _{1,

2,

3,

4,

5} , Ke Liu _{6,

7,

8,

9,

10} , Shengchun Yang _{1,

2,

3,

4,

5} , Jinglei Bi _{1,

2,

3,

4,

5} , Xiaoyan Liu _{1,

2,

3,

4,

5} , Ge Meng _{4,

5,

10,

11,

12} , Jianhui Li _{5,

10,

13,

14,

15} , Zhimao Yang _{1,

2,

3,

4,

5} , Sen Yang _{1,

2,

3,

4,

5}

Affiliation

School of Science
MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter
State Key Laboratory for Mechanical Behavior of Materials
Xi’an Jiaotong University
Xi’an 710049
Hubei Key Laboratory of Advanced Textile Materials & Application
College of Materials Science and Engineering
Wuhan Textile University
Wuhan 430200
China
School of Pharmacy
Health Science Center
Department of Surgical Oncology
Shaanxi Provincial People's Hospital
Third Affiliated Hospital of Medical College of Xi’an Jiaotong University

Morphology control is expected to be an effective method to enhance the electrochemical properties of materials. In this work, zinc cation-mediated growth of Cu₂O crystals was achieved via an aqueous chemical route at room temperature. Thus, by simply increasing the concentration of Zn²⁺, concave cube-like (C-Cu₂O), porous (P-Cu₂O), and hierarchical (H-Cu₂O) Cu₂O crystals were selectively obtained. The morphologies and structures of the as-prepared Cu₂O crystals were characterized by SEM, TEM, XRD and XPS. The three materials were subsequently employed as active materials for the non-enzymatic detection of glucose. The H-Cu₂O-based electrode exhibited the highest sensitivity (3076 μA mM⁻¹ cm⁻²) in virtue of its highest surface area, while the P-Cu₂O-based electrode showed the widest linear range (up to 24 mM). The reliability of the Cu₂O-based glucose sensors was proved by determining their detection limit, response time, selectivity, and stability characteristics on human serum samples. This work provides a novel strategy for the morphology-controlled Zn²⁺-mediated fabrication of Cu₂O crystals with different glucose sensing performances depending on their structures.

中文翻译：

锌离子介导的氧化亚铜晶体合成用于非酶法葡萄糖检测

形态控制有望成为增强材料电化学性能的有效方法。在这项工作中，锌离子介导的Cu ₂ O晶体的生长是通过在室温下通过水性化学途径实现的。因此，通过简单地增加Zn ²⁺的浓度，选择性地获得了凹形立方体（C-Cu ₂ O），多孔（P-Cu ₂ O）和分层（H-Cu ₂ O）Cu ₂ O晶体。通过SEM，TEM，XRD和XPS对所制备的Cu ₂ O晶体的形貌和结构进行了表征。随后将这三种材料用作非酶法检测葡萄糖的活性材料。氢铜₂ O基电极由于其最大的表面积而表现出最高的灵敏度（3076μAmM^-1 cm^-2），而P-Cu₂ O基电极则显示出最宽的线性范围（最高24 mM）。通过确定其检测限，响应时间，选择性和对人血清样品的稳定性特征，证明了基于Cu₂ O的葡萄糖传感器的可靠性。这项工作为形态控制的Zn²⁺介导的Cu₂ O晶体的结构提供了一种新颖的策略，该结构具有不同的葡萄糖感应性能。

更新日期：2017-11-15

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