Sensitive Nonenzymatic Electrochemical Glucose Detection Based on Hollow Porous NiO

Abstract

Transition metal oxides (TMOs) have attracted extensive research attentions as promising electrocatalytic materials. Despite low cost and high stability, the electrocatalytic activity of TMOs still cannot satisfy the requirements of applications. Inspired by kinetics, the design of hollow porous structure is considered as a promising strategy to achieve superior electrocatalytic performance. In this work, cubic NiO hollow porous architecture (NiO HPA) was constructed through coordinating etching and precipitating (CEP) principle followed by post calcination. Being employed to detect glucose, NiO HPA electrode exhibits outstanding electrocatalytic activity in terms of high sensitivity (1323 μA mM−1 cm−2) and low detection limit (0.32 μM). The excellent electrocatalytic activity can be ascribed to large specific surface area (SSA), ordered diffusion channels, and accelerated electron transfer rate derived from the unique hollow porous features. The results demonstrate that the NiO HPA could have practical applications in the design of nonenzymatic glucose sensors. The construction of hollow porous architecture provides an effective nanoengineering strategy for high-performance electrocatalysts.Electronic supplementary materialThe online version of this article (10.1186/s11671-017-2406-0) contains supplementary material, which is available to authorized users.

Tuning the NiO Thin Film Morphology on Carbon Nanotubes by Atomic Layer Deposition for Enzyme‐Free Glucose Sensing

“…Highly sensitive and efficient glucose analysis is crucial in numerous fields like clinical biochemistry, pharmaceutical analysis, food industries and environmental monitoring . Among several techniques, electrochemical detection has been broadly applied due to its high selectivity, sensitivity, simplicity and low cost .…”

“…It is important to mention that the properties (i. e., sensitivity, selectivity, response times and stability) of non‐enzymatic electrochemical glucose sensors strongly depend on the electrode material and its nanostructure . Ni based materials, especially NiO and Ni(OH) 2 , have been widely reported due to their low toxicity, low cost and high electrocatalytic activity promoted by the Ni 3+ /Ni 2+ redox couple in basic media ,. Nonetheless, the poor stability, high charge transfer resistance and sheet resistance, which lead to insufficient electron‐transfer kinetics, hinder the wide applications of Ni based materials in electrochemical sensors.…”

Design of Double-Shelled CuS Nanocages to Optimize Electrocatalytic Dynamic for Sensitive Detection of Ascorbic Acid

“…Especially, the pore volumes of 2-CuS NCs and 1-CuS NCs were estimated as 0.045 cm 3 g −1 and 0.011 cm 3 g −1 , respectively. The mesopores served as suitable channels for ion diffusion and played a key role in facile mass transport during electrocatalytic reactions [21]. Moreover, the surface area of 2-CuS NCs (28.3 m 2 g −1 ) was much larger than that of 1-CuS NCs (10.03 m 2 g −1 ).…”

Nickel Catalysts Supported on Acetylene Black for High-Efficient Electrochemical Oxidation and Sensitive Detection of Glucose

“…Currently, among the various analytical techniques for the detection of glucose, non-enzymatic electrochemical sensing methods are recognized as the most promising one because of the simple device design, high selectivity, and fast response ability [10][11][12][13]. Meanwhile, the sensitivity and detection limit of this method can be largely regulated and controlled by the electrode catalysts [14,15]. Therefore, it is of great importance to develop high efficient electrocatalyst, especially with bifunctional properties for oxidation and detection of the glucose in the GFCs and glucose biosensors.…”