ArticleNanomaterials (Basel, Switzerland)2022
Defect Density-Dependent pH Response of Graphene Derivatives: Towards the Development of pH-Sensitive Graphene Oxide Devices.
Article in Nanomaterials (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 17 citations in OpenAlex.
- Robust pH Sensing Using a Graphene Oxide and Covalent Organic Frameworks Composite for Gastro-esophageal Reflux Disease Diagnosis.Advanced healthcare materials · 2025Article
- Microfabricated rGO/PANI Interdigitated Electrodes for Reference-Free, Label-Free pH Sensing on Flexible Substrates.Micromachines · 2025Article
- Optimization of Carbon Nanotube Percolation Networks for Broad Dynamic Range Detection of Permanganate in Water.The journal of physical chemistry. C, Nanomaterials and interfaces · 2025Article
- Continuous Monitoring of Monochloramine in Water, and Its Distinction from Free Chlorine and Dichloramine Using a Functionalized Graphene-Based Array of Chemiresistors.ACS ES&T water · 2024Article
- Challenges for Field-Effect-Transistor-Based Graphene Biosensors.Materials (Basel, Switzerland) · 2024Review
- Graphene-Based Chemiresistor Sensors for Drinking Water Quality Monitoring.Sensors (Basel, Switzerland) · 2023Review
- Identification and Quantification of Aqueous Disinfectants Using an Array of Carbon Nanotube-Based Chemiresistors.ACS applied engineering materials · 2023Article
- Electrodeposition and Properties of Composite Ni Coatings Modified with Multilayer Graphene Oxide.Micromachines · 2023Article
- Electrochemical Exfoliation of Graphite to Graphene-Based Nanomaterials.Molecules (Basel, Switzerland) · 2022Article
- Editorial for Special Issue: "Preparation of Nanomaterial Modified Electrode and Its Sensing Application".Nanomaterials (Basel, Switzerland) · 2022Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
In this study, we demonstrate that a highly pH-sensitive substrate could be fabricated by controlling the type and defect density of graphene derivatives. Nanomaterials from single-layer graphene resembling a defect-free structure to few-layer graphene and graphene oxide with high defect density were used to demonstrate the pH-sensing mechanisms of graphene. We show the presence of three competing mechanisms of pH sensitivity, including the availability of functional groups, the electrochemical double layer, and the ion trapping that determines the overall pH response. The graphene surface was selectively functionalized with hydroxyl, amine, and carboxyl groups to understand the role and density of the graphene pH-sensitive functional groups. Later, we establish the development of highly pH-sensitive graphene oxide by controlling its defect density. This research opens a new avenue for integrating micro-nano-sized pH sensors based on graphene derivatives into next-generation sensing platforms.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.