Metal–organic frameworks (MOFs) composite of polyaniline-CNT@aluminum succinate for non-enzymatic nitrite sensor

Nanometer-Sized MIL-101(Cr) Loaded with Metal Ions for Applications as a Nitrite Sensor with Enhanced Electrochemical Properties

“…The probability of food poisoning caused by nitrite is very high because nitrite can oxidize normal low-iron hemoglobin into methemoglobin, resulting in the loss of its ability to deliver oxygen and causing the tissue hypoxia. , In severe cases, nitrite can even lead to death . The International Agency for Research on Cancer has included nitrite in the list of group 2A carcinogens, and the World Health Organization (WHO) has stipulated that the maximum content of nitrite in drinking water is 65.2 μM. − Therefore, the detection of nitrite holds significant importance in various fields. There are many methods for detecting nitrite, and electrochemical detection stands out due to its simplicity, rapidity, low cost, and high sensitivity. − …”

Comparison of the analytical performance of two different electrochemical sensors based on a composite of gold nanorods with carbon nanomaterials and PEDOT:PSS for the sensitive detection of nitrite in processed meat products

“…Various conductive nanomaterials and their composites, such as reduced graphene oxide, 32,33 multiwalled carbon nanotubes (MWCNTs), 34,35 metal-organic frameworks, 36,37 metal oxides, 38,39 MXenes, 40,41 and layered double hydroxides, 42 have been employed for nitrite detection to obtain a better current response than conventional electrodes. All these types of nanomaterials can be composited with conductive polymers, e.g., poly (3,4dioxythiophene):polystyrenesulfonate (PEDOT:PSS), 43,44 polypyrrole, 45 polythiophene, 46 and polyaniline, 47,48 to enhance electrode conductivity. Moreover, gold nanorods (AuNRs), as a type of gold nanoparticle, have been widely employed as modiers in electrochemical sensing platforms due to their good biocompatibility, 49,50 high surface area, 51,52 and fast electron transfer ability, 53,54 which could provide efficient mass transport properties to the electrode surface.…”

ZIF-67C@CeO2 Composite for the Electrochemical Non-Enzymatic Determination of Nitrite in Fish Dry Samples

“…Among the numerous chemical analysis and testing methods, electrochemical analysis techniques are widely used due to their advantages of low price, simple operation, sensitivity and reliability. [6][7][8][9] To achieve a larger response current, the primary strategy is to focus on modification of electrode surface. The conventional electrode materials mainly included carbon nanomaterials 10 (graphene, [11][12][13] fullerene, 14 carbon nanotubes 15,16 ), conducting polymers 17 and metallic nanoparticles (gold, 18,19 platinum, 20 palladium, 21,22 titanium 23 ), metal oxides [24][25][26] and hydroxides.…”