Journal Article10.1016/j.jelechem.2022.117085
Renewable antimony-based pH sensor
5
TL;DR: In this paper , the authors proposed to renew the antimony-based sensor by physical polishing and electrochemical cathode reduction, which improved the pH response sensitivity from 0.034 V/pH to 0.042 V/PH.
read more
Abstract: Metal-based pH sensor has wide applications in industrial monitoring, soil environment, marine safety, and other fields. In this study, we proposed to renew the antimony-based sensor by physical polishing and electrochemical cathode reduction. Compared with before polishing, the pH response sensitivity after polishing increased from 0.034 V/pH to 0.042 V/pH, electrochemical cathode reduction renewed the pH response sensitivity improved from 0.018 V/pH to 0.032 V/pH (10 min) and 0.043 V/pH (30 min). The reasons for the deterioration of the pH response performance of the antimony-based sensor were analyzed by SEM, EDS, and XRD, and the renewable mechanisms of the sensor were proposed. The renewable effect of electrochemical cathode reduction on the degradation of sensor accuracy was evaluated for long-term monitoring. It is expected to realize remote online renewal of sensors under on-site unattended conditions, to reduce operation and maintenance costs of the sensor. These results provide solutions for the repeated regeneration of metal-based pH sensors which were degraded in performance and have significance for promoting the development and wide applications of renewable pH sensors.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
A molecularly imprinted electrochemical microneedle sensor for multiplexed metabolites detection in human sweat
TL;DR: In this article , an array of inexpensive molecularly imprinted microneedle platforms for the multiplexed electrochemical detection of pH, epinephrine, dopamine, and lactate biomarkers in human sweat was demonstrated.
23
Estimation of Some Parameters in the Point Defect Model (PDM) for the Passivity of Metals.
George Engelhardt,Dihao Chen,Chaofang Dong,Digby Macdonald +3 more
TL;DR: The potential drop at the barrier layer/solution interface of the passive film on a metal is a linear function of the applied voltage and pH. Parameters α and β are not independent. Some dependence of parameters α and β on temperature can exist, but it is weak in the practical region.
2
Moving towards in pouch diagnostics for ostomy patients: exploiting the versatility of laser induced graphene sensors
08 Sep 2023
TL;DR: The development of a 3D printed sensor for direct incorporation within stoma pouches and its performance was assessed in a heterogeneous bacterial fermentation mixture simulating ileostomy fluid with the pH recorded before and after 96 h incubation.
1
A molecularly imprinted electrochemical microneedle sensor for multiplexed metabolites detection in human sweat.
TL;DR: In this article , an array of inexpensive molecularly imprinted microneedle platforms for the multiplexed electrochemical detection of pH, epinephrine, dopamine, and lactate biomarkers in human sweat was demonstrated.
Preparation and application of Cu-doped antimony electrode to improve the performance of pH measurement in seawater
Zhen Li,Li Zong,Caiyun Zhang,Chao-Qun Liu +3 more
TL;DR: The preparation and application of Cu-doped antimony electrodes improve the performance of pH measurement in seawater by reducing the potential drift and improving the stability of the electrodes.
References
Metal oxides based electrochemical pH sensors: Current progress and future perspectives
TL;DR: In this paper, the authors proposed a pH sensor for food processing, health monitoring, agriculture and nuclear sectors, and water quality monitoring, which is on high demand in numerous applications.
366
Flexible potentiometric pH sensors for wearable systems
TL;DR: A review of wearable electrochemical potentiometric pH sensors can be found in this article, covering the key topics such as suitability of pH sensors in wearable systems, designs of flexible pH sensors, which may vary with target applications, materials for various components of the sensor such as substrates, reference and sensitive electrode.
Metal-Metal Oxide and Metal Oxide Electrodes as pH Sensors.
TL;DR: The pH is one of the most important parameters for char-acterizing the chemical properties of an aqueous solution, and among alternatives to the hydrogen-selective glass electrode group of sensors, potentiometric metal-metal oxide pH sensors respond to pH, ideally due to an equilibrium involving the metal and its oxide.
179
Graphene-based devices for measuring pH
Pietro Salvo,Pietro Salvo,Bernardo Melai,Nicola Calisi,Clara Paoletti,Francesca G. Bellagambi,Arno Kirchhain,Maria Giovanna Trivella,Roger Fuoco,F. Di Francesco +9 more
TL;DR: In this article, a review describes how graphene, graphene oxide and reduced graphene oxide can be used to fabricate pH-sensitive devices (e.g., solution-gated FETs, solid-gate FET, electrochemical sensors, and pH sensitive quantum dots).