Electrochemical recovery of low concentrated platinum (Pt) on nickel hexacyanoferrate nanoparticles film

التفاصيل البيبلوغرافية
العنوان: Electrochemical recovery of low concentrated platinum (Pt) on nickel hexacyanoferrate nanoparticles film
المؤلفون: Xinxin Long, Zejiao Li, Rongzhi Chen, Jixiang Wang, Xinming Wang, Jihua Tan, Shengjiong Yang
المصدر: Journal of the Taiwan Institute of Chemical Engineers. 111:246-251
بيانات النشر: Elsevier BV, 2020.
سنة النشر: 2020
مصطلحات موضوعية: Materials science, General Chemical Engineering, Inorganic chemistry, chemistry.chemical_element, 02 engineering and technology, General Chemistry, Electrolyte, 010402 general chemistry, 021001 nanoscience & nanotechnology, Electrochemistry, 01 natural sciences, 0104 chemical sciences, Nickel, Adsorption, chemistry, Chemisorption, Fourier transform infrared spectroscopy, Cyclic voltammetry, 0210 nano-technology, Platinum
الوصف: The nickel hexacyanoferrate (NiHCF) nanoparticles film coated electrode was firstly used to recover low concentrated Pt(II) (∼ppm) from the dilute solution electrochemically. The film showed compact nanoparticles structure, high redox-active sites (4.6 mmol/g), characterised by Cyclic Voltammetry (CV), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FE-SEM). There was a prominent recovery effect of Pt(II) on NiHCF film in a well-stirred solution. The recovery of Pt(II) was improved with the potential decreasing but decreased with the background electrolyte concentration rising. And its recovery capacity was up to 498.62 mg/g at -0.6 V (vs. SCE), about occupying 56% of redox-active sites, which was significantly higher than the conventional adsorption process. The presence of Co2+ greatly enhanced the Pt(II) recovery from the dilute solution, since Co2+ inserted into availble Ni-NC-Fe-CN- sites, resulting in a drecrese of static electrostatic field and an increase of boundary laryer effect. Conversely, Ni2+ had an insignificant effect on Pt(II) recovery in agreement with the results of energy dispersive X-ray (EDX). The kinetic considerations indicated that the adsorption process was controlled by a multistep mechanism, and the whole process possibly involved the chemisorption of Pt(II) on NiHCF film firstly and then Pt(II) was reduced into Pt(0).
تدمد: 1876-1070
DOI: 10.1016/j.jtice.2020.05.004
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::66f2abacff2ee63d827bd7aa553209ca
https://doi.org/10.1016/j.jtice.2020.05.004
Rights: CLOSED
رقم الانضمام: edsair.doi...........66f2abacff2ee63d827bd7aa553209ca
قاعدة البيانات: OpenAIRE
الوصف
تدمد:18761070
DOI:10.1016/j.jtice.2020.05.004