Ultralow Pt-loading Au nanoparticles have been fabricated on the surface of reduced graphene oxide （RGO） by using underpotential deposition （UPD） monolayer redox replacement process. The Pt/Au/RGO modified electro...Ultralow Pt-loading Au nanoparticles have been fabricated on the surface of reduced graphene oxide （RGO） by using underpotential deposition （UPD） monolayer redox replacement process. The Pt/Au/RGO modified electrode exhibits an excellent electrocatalytic activity toward catechol and hydroquinone. Under the optimized condition, the separation of peak-to-peak between hydroquinone and catechol is 197 mV, which is wide enough to distinguish the isomers of benzenediol. Catechol is detected by the Pt/Au/RGO/GCE with a low detection limit in the presence of hydroquinone.展开更多
基金This work was financially supported by the National Natural Science Foundation of China （21271136）, Natural Science Foundation of Anhui Province （1408085QB41, 1408085MB40）, Natural Science Research Project of Education Department of Anhui Province （KJ2013A247, K J2016A888）, Anhui Province Cultivate Outstanding Talent （2014SQR01）, Opening Project of Anhui Key Laboratory of Spin Electron and Na- nomaterials （2013YKF20, 2014YKF52, 2011YKF03, 2014YKF35）, the Program of Innovative Research Team of Anhui Provincial Education Department （Photoelectric information material new energy device）, Innovative Research Team of Suzhou University （2013kytd02）, Suzhou University Cultivate Outstanding Talent （No. 2014XQNRL005）, and the College Students＇ Innovative Entrepreneurial Training Plan Program of Anhui Province （201510379133, 201410379067）.
文摘Ultralow Pt-loading Au nanoparticles have been fabricated on the surface of reduced graphene oxide （RGO） by using underpotential deposition （UPD） monolayer redox replacement process. The Pt/Au/RGO modified electrode exhibits an excellent electrocatalytic activity toward catechol and hydroquinone. Under the optimized condition, the separation of peak-to-peak between hydroquinone and catechol is 197 mV, which is wide enough to distinguish the isomers of benzenediol. Catechol is detected by the Pt/Au/RGO/GCE with a low detection limit in the presence of hydroquinone.
