Surface Chemistry Determined Electrochemical Sensing Performance of Red Phosphorus and Single Walled Carbon Nanotube Composites

Lingbo Liu; Ling Lei; Keni ZengKangbing WuNianjun Yang

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Surface Chemistry Determined Electrochemical Sensing Performance of Red Phosphorus and Single Walled Carbon Nanotube Composites

机译：Surface Chemistry Determined Electrochemical Sensing Performance of Red Phosphorus and Single Walled Carbon Nanotube Composites

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Red phosphorus (RP) is a promising electrochemical sensing material owing toits abundant surface groups and reactive sites. In this study, a sodium dodecylsulfate-assisted phosphorus-amine approach is employed to tune surfacechemistry of RP nanoparticles. During the transition of the polyphosphorusamineanion to RP, the cleavage of P-O-P bond and the formation of P-O-Cbond are monitored by in situ attenuated total reflection surface-enhancedinfrared absorption spectroscopy. The formed P-O-C bonds that are originatedfrom the P-O- reactive sites are theoretically revealed with the densityfunctional theory calculations, charge density difference, and X-ray photoelectronspectroscopy. The energies of optimized aromatic and aliphatic P-O-Cbonds are ?2.51 and ?2.65 eV, respectively. To explore electrochemical sensingapplications, RP nanoparticles are in situ grown on single-walled carbon nanotube(SWCNT). Such a stable RP/SWCNT suspension is applied to fabricate theRP/SWCNT integrated arrays via a template-filtration method. Such an arrayis efficient for sensitive and selective monitoring of p-phenylenediamine onhair dyes. This study provides insights into surface chemistry of RP, its roles inelectrochemical sensing applications, and an approach to produce high-performanceRP sensors at large scales.

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来源
《Advanced functional materials》 |2023年第3期|2211335.1-2211335.11|共11页
作者
Lingbo Liu; Ling Lei; Keni ZengKangbing WuNianjun Yang;
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作者单位

Hubei Key Laboratory of Bioinorganic Chemistry and Materia MedicaSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074, China;

Institute of Materials EngineeringUniversity of Siegen57076 Siegen, Germany;

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carbon nanotubes; electrochemical sensing; p-phenylenediamine; red phosphorus; surface chemistry;

Surface Chemistry Determined Electrochemical Sensing Performance of Red Phosphorus and Single Walled Carbon Nanotube Composites

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