Self-assembled microstructure of carbon nanotubes for enzymeless glucose sensor

Li, Xin; Zhu, Qingyuan; Tong, Shengfu; Wang, Wen; Song, Wenbo

doi:10.1016/j.snb.2008.10.051

Cited by 92 publications

(48 citation statements)

References 36 publications

(61 reference statements)

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“…The pH effect on glucose electrooxidation was investigated in the study. The oxidation of glucose using NaOH solutions of different concentrations ranging from 0.001 to 1 M and achieved the best response in 0.1 M solution, which was in good agreement with previous reports [31,43,44,46]. So, we selected 0.1 M NaOH as supporting electrolyte.…”

supporting

confidence: 87%

“…For a high sensitivity, the corresponding potential (+ 0.40 V) of topmost signal-to-background ratio (as shown in Figure 5) was chosen and employed as the optimum constant potential for the determination of glucose [31]. The applied potential of + 0.40 V in the glucose determination in this study was more negative than those of + 0.65 V [41][42][43], 0.55 V [44], 0.50 V [45] and 0.45 V [46] in former reports of copper-based electrode, which suggested a preferable electrocatalytic activity to glucose on this pillar-like-structure Cu film electrode. The pH effect on glucose electrooxidation was investigated in the study.…”

mentioning

confidence: 99%

“…The Cu film electrode reached 95 % of the steady-state current within 3s, which is faster than those of 5 s [42,44] in the reports of Cu-based electrode, demonstrating a fast current response of the electrode towards glucose oxidation. , which is much enhanced than that of PVP-functionalized [46] and DMG-functionalized [43] copper nanoparticles sensor, and other enzymeless sensor based on copperbased electrode [44].…”

mentioning

confidence: 99%

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Nonenzymatic Electrochemical Glucose Sensor Based on Novel Copper Film

Sun

Liu

et al. 2010

Electroanalysis

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Novel copper (Cu) film composed of pillar-like structure was synthesized on indium-doped tin oxide (ITO) substrate by electrodeposition in acetate bath with proline as additive for the first time and used to construct nonenzymatic glucose sensor. When applied to detect glucose, such prepared electrode showed low operating potential (0.4 V), high sensitivity (699.4499 mA mM À1 cm À2), and fast response time (< 3 s) compared with other Cu-based electrodes. In addition, the prepared electrode also offered good anti-interference ability to ascorbic acid, uric acid and acetaminophen. Present study provides new insights into the control of Cu film morphology for sensor fabrication.

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confidence: 87%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Nonenzymatic Electrochemical Glucose Sensor Based on Novel Copper Film

Sun

Liu

et al. 2010

Electroanalysis

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“…A low-cost enzymeless glucose sensor can be made based on the directed and confined growth of CuNPs in selfassembled CNT films (Li et al, 2009a). A microbial biosensor for glucose is also developed based on the immobilization of Pseudomonas putida DSM 50026 cells on the CNT modified carbon paste electrodes using an Os-redox polymer (Timur et al, 2007).…”

Section: Non-enzymaticmentioning

confidence: 99%

“…A SWCNT modified stainless steel microelectrode for EP sensing is designed based on an EC deposition technique (Valentini et al, 2007a). Another sensor for EP and NEP is based on a MWCNT-poly(nordihydroguaiaretic acid)-CS copolymer film on a screen-printed carbon electrode (Li et al, 2009a).…”

Section: Neurotransmitters/neurochemicalsmentioning

confidence: 99%

Advances in carbon nanotube based electrochemical sensors for bioanalytical applications

Vashist

Zheng

Al‐Rubeaan

et al. 2011

Biotechnology Advances

402

218

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Electrochemical (EC) sensing approaches have exploited the use of carbon nanotubes (CNTs) as electrode materials owing to their unique structures and properties to provide strong electrocatalytic activity with minimal surface fouling. Nanofabrication and device integration technologies have emerged along with significant advances in the synthesis, purification, conjugation and biofunctionalization of CNTs. Such combined efforts have contributed towards the rapid development of CNT-based sensors for a plethora of important analytes with improved detection sensitivity and selectivity. The use of CNTs opens an opportunity for the direct electron transfer between the enzyme and the active electrode area. Of particular interest are also excellent electrocatalytic activities of CNTs on the redox reaction of hydrogen peroxide and nicotinamide adenine dinucleotide, two major by-products of enzymatic reactions. This excellent electrocatalysis holds a promising future for the simple design and implementation of on-site biosensors for oxidases and dehydrogenases with enhanced selectivity. To date, the use of an anti-interference layer or an artificial electron mediator is critically needed to circumvent unwanted endogenous electroactive species. Such interfering species are effectively suppressed by using CNT based electrodes since the oxidation of NADH, thiols, hydrogen peroxide, etc. by CNTs can be performed at low potentials. Nevertheless, the major future challenges for the development of CNT-EC sensors include miniaturization, optimization and simplification of the procedure for fabricating CNT based electrodes with minimal non-specific binding, high sensitivity and rapid response followed by their extensive validation using "real world" samples. A high resistance to electrode fouling and selectivity are the two key pending issues for the application of CNT-based biosensors in clinical chemistry, food quality and control, waste water treatment and bioprocessing.

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Highly Sensitive and Flexible Copper Oxide/Graphene Non‐Enzymatic Glucose Sensor by Laser Direct Writing

Yang

Gao

et al. 2023

Advanced Sensor Research

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Accurate and convenient detection of human blood glucose levels is an effective method for early diagnosis of diabetes and prevention of complications. The flexible and wearable electrochemical glucose sensor with low cost, fast responsiveness, good stability, reliability, and high sensitivity has attracted much attention in monitoring glucose concentration. The preparation of a conductive layer with catalytic activity on a flexible substrate is the key to making a wearable glucose sensor. Here, graphene composite materials sintered with copper oxide (CuO) nanoparticles are successfully prepared on a polyimide film by laser direct writing method and fabricated a flexible non‐enzymatic glucose sensor using laser‐engraved graphene (LEG) as a conductive electrode. The CuO/LEG sensor exhibits a high sensitivity of 619.43 μA mm−1 cm−2 in 0–3 mm glucose and 462.96 μA mm−1 cm−2 in 0–8 mm glucose. In addition, the CuO/LEG sensor shows good reproducibility, high anti‐interference capability, and long‐term stability. It also presents good bending stability, which can maintain 82.40% initial current after 100 times bending. Moreover, the CuO/LEG sensor has an obvious step‐ampere response in the detection of sweat samples, indicating the great potential of wearable sweat sensors.

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Self-assembled microstructure of carbon nanotubes for enzymeless glucose sensor

Cited by 92 publications

References 36 publications

Nonenzymatic Electrochemical Glucose Sensor Based on Novel Copper Film

Nonenzymatic Electrochemical Glucose Sensor Based on Novel Copper Film

Advances in carbon nanotube based electrochemical sensors for bioanalytical applications

Highly Sensitive and Flexible Copper Oxide/Graphene Non‐Enzymatic Glucose Sensor by Laser Direct Writing

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