High-performance hydrogen peroxide micro-sensors based on laser-induced fabrication of graphene@Ag electrodes

Highly efficient Ag doped δ-MnO2 decorated graphene: Comparison and application in electrochemical detection of H2O2

“…Hydrogen peroxide (H 2 O 2 ) is one of the most significant and versatile analytes available in our daily life [1] , [2] . It is widely used as a disinfecting agent in food safety and medical care [1] , [3] , as a bleaching agent in the textile, wood, and paper industry [4] , and as an oxidizing agent in environmental systems [5] .…”

“…Hydrogen peroxide (H 2 O 2 ) is one of the most significant and versatile analytes available in our daily life [1] , [2] . It is widely used as a disinfecting agent in food safety and medical care [1] , [3] , as a bleaching agent in the textile, wood, and paper industry [4] , and as an oxidizing agent in environmental systems [5] . Recently, the Food and Drug Administration of the United States suggested sterilizing N95 respirator masks and personal protective equipment aerosolized by 35% concentrated vapor phase of H 2 O 2 for the safety of doctors and their assistants during this contemporary pandemic COVID-19 [6] .…”

“…On the other hand, H 2 O 2 is also well known as a cytotoxic agent due to its reactive oxygen species (ROS) producing capability [7] . Excess secretions of ROS through abnormal production of H 2 O 2 in the human body could damage cell components [1] and play a vital role in diseases mechanism [8] . So, H 2 O 2 is highly responsible for some serious diseases such as cancer [9] , inflammation [10] , neurodegeneration [11] , DNA damage [12] , heart attack [1] , Alzheimer’s [13] , Parkinson’s [14] , cardiovascular diseases [15] , etc.…”

“…Excess secretions of ROS through abnormal production of H 2 O 2 in the human body could damage cell components [1] and play a vital role in diseases mechanism [8] . So, H 2 O 2 is highly responsible for some serious diseases such as cancer [9] , inflammation [10] , neurodegeneration [11] , DNA damage [12] , heart attack [1] , Alzheimer’s [13] , Parkinson’s [14] , cardiovascular diseases [15] , etc. Furthermore, H 2 O 2 could easily contaminate the environment, it has adverse effects on the ecosystem also [16] .…”

“…A short number of metal doping reports are available for electrocatalysis due to its complex creation and tough acceptance [31] . Among different metal nanoparticles (NPs), silver NPs (Ag NPs) have been significantly reported as an effective H 2 O 2 sensor due to large surface area, high conductivity, good biocompatibility, and low toxicity [1] , [5] , [18] , [32] , [33] . But Ag NPs suffer from severe aggregations because of the strong van der Waals force and high surface energy of nano-sized particles [5] , [31] .…”