Anti-PPY monoclonal antibody, clone IZC 458-08

To develop a stable and efficient cathode applied in electro-Fenton is indispensable. In current study, the carbon felt (CF) was modified by the cyclic voltammetric (CV) electrodeposited anthraquinone 2-sulfonate (AQS) and polypyrrole (PPy). The newly fabricated CF/AQS/PPy cathode by CV electrodeposition method was applied in electro-Fenton, which showed higher stability and efficiency compared with that of the traditional potentiostatic electrodeposited (TPED) method. The yield of the electro-generated H2O2 and the degradation efficiencies of the target pollutant (RhB) in electro-Fenton with the newly fabricated cathode were around 10 times and 5 times higher than those of the unmodified CF cathode respectively. Recyclability evaluation showed that the degradation efficiency kept a good stability and could reach 100% within 1 h reaction time. The significantly enhanced performance and stability were attributed to the reduced charge transfer resistance (Rct) of the fabricated CF/AQS/PPy cathode decorated by the high conductive PPy and catalytic activity of AQS for oxygen reduction. The modification could result in an elevated extent of oxygen reduction to generate more O-2(center dot-), which subsequently combined with the protons to produce H2O2, the indispensable reactant to form reactive OH center dot in the Fenton's process. The quenching experiment and EPR determination further confirmed the existence of OH center dot and O-2(center dot-) free radicals in electro-Fenton equipped with the newly fabricated cathode. (c) 2020 Elsevier Ltd. All rights reserved.

Constructing 3D graphene frameworks with ultra-thickness and rich ion transport paths is of great significance for the practical application of graphene supercapacitors. Herein, 3D porous graphene frameworks, with thickness up to 320 mu m, are directly grown by laser induction on the synthesized polyimide by optimizing the thermal sensitivity of polyimide to increase laser penetration depth. Simultaneously, hierarchical pores are obtained due to fast liberation of gaseous products during laser radiation, which facilitates fast ion transport. Coupled with its conductive interconnection network, the as-prepared 3D graphene delivers a high specific capacitance of 132.2 mF cm(-2) at 0.5 mA cm(-2), which is nearly one order of magnitude larger than that of most reported laser induced graphene electrodes. Pseudocapacitive polypyrrole is further introduced into the gra-phene frameworks to prepare composite electrodes, which show specific capacitances as high as 2412.2 mF cm(-2) at 0.5 mA cm(-2). Accordingly, flexible solid-state micro-supercapacitors are constructed, with a high energy density of 134.4 mu W h cm(-2) at a power density of 325 mu W cm(-2). Furthermore, 95.6% of initial capacitance is retained after 10,000 cycles, indicating superior cycling stability. These results suggest that the ultra-thick hierarchical porous graphene frameworks have promising prospects for high-performance flexible microsupercapacitors.