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Persistent URL	http://purl.org/net/epubs/work/64630
Record Status	Checked
Record Id	64630
Title	Hydrothermal core-shell carbon nanoparticle films: thinning the shell leads to dramatic pH response
Contributors	F Xia (Wuhan University of Technology), M Pan (Wuhan University of Technology), S Mu (Wuhan University of Technology), Y Xiong (Bath U.), KJ Edler (Bath U.), I Idini (Bath U.), MD Jones (Bath U.), SC Tsang (Oxford U.), F Marken (Bath U.)
Abstract	Carbon nanoparticles with phenylsulfonate negative surface functionality (Emperor 2000, Cabot Corp.) are coated with positive chitosan followed by hydrothermal carbonization to give highly pH-responsive core-shell nanocarbon composite materials. With optimised core-shell ratio (resulting in an average shell thickness of ca. 4 nm, estimated from SANS data) modified electrodes exhibit highly pH-sensitive resistance, capacitance, and Faradaic electron transfer responses (solution based, covalently bound, or hydrothermally embedded). A shell "double layer exclusion" mechanism is discussed to explain the observed pH switching effects. Based on this mechanism, a broader range of future applications of responsive core-shell nanoparticles are envisaged.
Organisation	ISIS , ISIS-LOQ , STFC
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Language	English (EN)

Type	Details	URI(s)	Local file(s)	Year
Journal Article	Phys Chem Chem Phys 14, no. 45 (2012): 15860-15865.	doi:10.1039/c2cp42659e		2012