1D Zn2GeO4 rods supported on Ni foam for high performance non-enzymatic hydrogen peroxide sensor

Fan, Nanyu; Kong, Quan; Lang, Ruifeng; Guan, Hongtao; Chen, Gang; Dong, Chengjun

doi:10.1016/j.surfin.2021.101295

Cited by 5 publications

(1 citation statement)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Figure 4c, the C dl values for CNT and RD-CNT were approximately 3.49 μF and 5.1 μF, respectively. Since the double layer capacitance of an ideal carbon electrode is 40 μF/cm 2 , the ECSAs can be estimated by the obtained capacitance divided by 40 μF/cm 2 [65]. The calculated ECSAS of RD-CNT and CNT are 0.128 cm 2 and 0.087 cm 2 , respectively, clearly indicating the former has larger electrochemically active surface area.…”

Section: Electrochemical Investigationsmentioning

confidence: 99%

Rich‐defect carbon nanotubes for highly sensitive detection of Dopamine

Liu

et al. 2023

Electroanalysis

View full text Add to dashboard Cite

Dopamine (DA) plays an essential role in the central nervous, renal, hormonal and cardiovascular systems. Various modified carbon nanotubes (CNT)‐based dopamine sensors have been reported, but inexpensive, highly sensitive plain CNT‐based ones are seldom studied. In this work, a facile and inexpensive CNT‐based DA sensor is made by rich‐defect multi‐walled carbon nanotubes (RD‐CNT) via an ultrasound method. The defect and elemental states of the RD‐CNT are systematically studied by transmission electron microscopy (TEM), high‐resolution transmission electron microscopy (HR‐TEM), Raman spectroscopy, X‐ray powder diffraction (XRD) and X‐ray‐photoelectron spectroscopy (XPS). Results show that massive holes and cracks exist in RD‐CNT. The level of defects increases from the additional exposed edges. The electrochemical characterizations indicate that the electrochemical sensor has the highest sensitivity of 438.4 μA/(μM ⋅ cm2) among all carbon materials‐based DA sensors while well meeting the clinically required detection range and selectivity. The DA sensor was further used to detect live healthy human serum and live PC12 cells with satisfactory results, thus holding great promise for an inexpensive but sensitive DA sensor in practical applications of clinical diagnosis and biological research.

show abstract

Section: Electrochemical Investigationsmentioning

confidence: 99%

Rich‐defect carbon nanotubes for highly sensitive detection of Dopamine

Liu

et al. 2023

Electroanalysis

View full text Add to dashboard Cite

show abstract

Nanoporous Pt(Au) Alloys for the Enhanced, Non‐enzymatic Detection of Hydrogen Peroxide under Biofouling Conditions

et al. 2022

View full text Add to dashboard Cite

The non-enzymatic electrochemical sensing of hydrogen peroxide (H 2 O 2 ) is described. This study utilized a 3D bicontinuous nanoporous platinum-gold alloy-based sensor (NPÀ Pt(Au) electrode), which has a morphology that resembles a molecular sieve. SEM and CV were used to evaluate the morphological and electrochemical characteristics of the NPÀ Pt(Au) electrodes. The cathodic voltammetric response of H 2 O 2 was enhanced at the NPÀ Pt(Au) as compared to planar Pt electrodes. The nanoporous electrode was able to maintain the H 2 O 2 voltammetric profile even in the presence of the biofouling agent, serum albumin. Its application as a nonenzymatic sensor for the amperometric measurement of H 2 O 2 was explored.

show abstract