Sensitive and selective determination of Cu 2+ at d -penicillamine functionalized nano-cellulose modified pencil graphite electrode

Sodium Alginate/Gelatin Microbeads-Intercalated With Kaolin Nanoclay for Emerging Drug Delivery in Wilson’s Disease

“…D-Penicillamine (D-PA) ( fig. 1) is a biologically active aminothiol [31], which is used in the treatment of Wilson's disease and remove the excess of copper from the body, may be in the form of deep purple colour complex with D-PA by chelation process [32]. D-P is a potentially an effective chelator for some transition metals, hence it is used as a good choice for treatment of heavy metal poising [33].…”

Recent Development and Environmental Applications of Nanocellulose-Based Membranes

“…Sensors detect and transform physical, chemical, and biological changes in their environment and convert them into analytical signals. Nanocellulose, being a natural nanomaterial, is crucial in the development of new sensors, especially in the context of developing a multidimensional architecture [ 123 , 124 , 125 , 126 ]. Table 6 summarizes the recent developments of nanocellulose-based sensors including electrochemical, optical, colorimetric, fluorescent, and biosensors for the detection of various types of pollutants such as heavy metal ions, water-soluble gases, minerals, and salts.…”

“…Nanocellulose has a number of hydroxyl groups that can be exploited to accommodate binding sites for selective analyte species adsorption, which increases electrochemical sensor selectivity, sensitivity, and durability. Taheri et al [ 124 ] discovered that an electrochemical sensor based on a D-penicillamine-anchored nano-cellulose (DPA-NC)-modified pencil graphite electrode exhibited good selectivity and sensitivity for copper ion in tap and river water samples, with a detection limit in the picomolar range (0.048 pM). The porous structure of the modifier and the formation of a compound between copper ions and nitrogen or oxygen-containing groups in DPA-NC may have contributed to the improved electrochemical responsiveness of the modified electrode.…”

Fabrication of bismuth oxide-modified pencil graphite sensors for monitoring the hazardous herbicide diuron

“…[25][26][27][28][29][30][31][32] Along with these electrochemical sensors, metal oxide-based sensors show superior electrocatalytic activity, stability and reproducibility for the determination of various pesticides. [33][34][35][36][37] The advantages of Bi 2 O 3 nanoparticles over other metals are revealed in their signicant performances such as adequate surface area, electrochemical stability, efficient catalytic activity, ease of functionalization, cost-effectiveness, chemical inertness, and less-toxicity. Due to less toxicity and non-reactive heavy metals, this is appropriate for in vivo applications compared to other metals.…”