The H-cell type reactor was set up. The chamber contained 20 cm3 of catholyte and anolyte, which was separated by Nafion® 117 membrane. The mixture of PC:[BMIM]BF4:water was used as catholyte in the volumetric ratio of approximately 7:4:1. The solution of 0.1 M KHCO3 was used as an anolyte. The prepared Bi/Sn electrodes were used as a working electrode (cathode) with Ag/AgCl reference electrode, while platinum foil (25 mm × 25 mm, 99.99%, Alfa Aesar, Haverhill, MA, USA) was used as a counter electrode (anode). The electrochemical impedance spectroscopy (EIS), was conducted with a frequency from 0.1 MHz to 0.01 Hz. Linear sweep voltammetry (LSV) was proceeded under CO2-saturated or N2-saturated electrolytes from –0.7 V to –2.0 V vs. Ag/AgCl with a scan rate of 10 mV/s. The electrocatalytic CO2RR performances of the prepared Bi/Sn electrodes were investigated in a CO2-saturated catholyte. Before the test, the catholyte was saturated by a CO2 (99.99%, Linde, Bangkok, Thailand) flow rate of 100 cm3/min for 1 h. During the CO2RR test, the CO2 flow rate was reduced to 20 cm3/min. The catalytic activity of electrodes was investigated at the applied potential range of −1.1 V to −1.7 V vs. Ag/AgCl for 70 min.
Platinum foil
Manufactured by Thermo Fisher Scientific
Sourced in United States
Platinum foil is a thin sheet of pure platinum metal. It is a highly durable and corrosion-resistant material with excellent thermal and electrical conductivity properties.
Automatically generated - may contain errors
Lab products found in correlation
3 protocols using platinum foil
1
Electrochemical CO2 Reduction using Bi/Sn Electrodes
2
Fabrication of Titanium Nanotube Arrays
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TNTs with a diameter of 150 nm were prepared with commercial pure Ti discs (purity: 99.9%, diameter: 34 or 14 mm, thickness: 1 mm, Baoji Titanium Industry, China). A method published in previous studies was followed. Specifically, the flat Ti discs were polished using 320–2000 grit SiC abrasive paper (Electron Microscopy Sciences). Then, the Ti discs were sequentially sonicated in 100% acetone, 70% ethanol, and distilled water for 15 min each before anodization, and the samples were dried in air. Next, Ti discs, acting as an anode, and platinum foil (Alfa Aesar), acting as a cathode, were connected in an electrochemical reaction flask, and 30 V DC power was supplied (Thermo Electron). A glycerol-based electrolyte was prepared with 0.25 wt% ammonium fluoride (Alfa Aesar, 96%) and 2 wt% deionized water. After anodization, the samples were thoroughly washed with deionized water and dried at 80 °C. Finally, a muffle furnace (Thermolyne 6000) was utilized to anneal the samples at 500 °C for 3 h. The nonanodized pure Ti foils (flat Ti) underwent the same treatment except that a voltage of 0 V were applied to the control group. Prior to cell culture experiments, all the experimental samples were sterilized with 70% ethanol for 10–12 h followed by exposure to UV light overnight.
3
Reversible Intercalation of 2D Crystals
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An electrochemical
cell with two electrodes is used to intercalate WS2, WSe2, and MoS2 (HQ graphene) crystals. A thin piece
(0.1 × 1 × 1 mm) of a crystal is used as the cathode, while
a platinum foil (Alfa Aesar) is used as the anode. Copper crocodile
clips are used to hold the electrodes in place. For the electrolyte,
tetrapropylammonium (TPA) bromide (Sigma-Aldrich, 5 mg/mL) is added
to propylene carbonate (∼50 mL). A voltage of 8 V is applied
for 30 min between the electrodes to intercalate the 2D crystal with
TPA+ cations. The 2D crystal expands in each case to greater
than twice its original volume, indicating the successful intercalation
of the crystal. After intercalation, the 2D crystal is emersed in
IPA overnight to dissolve and remove any residual bromide ions (Br –) on the crystal.
cell with two electrodes is used to intercalate WS2, WSe2, and MoS2 (HQ graphene) crystals. A thin piece
(0.1 × 1 × 1 mm) of a crystal is used as the cathode, while
a platinum foil (Alfa Aesar) is used as the anode. Copper crocodile
clips are used to hold the electrodes in place. For the electrolyte,
tetrapropylammonium (TPA) bromide (Sigma-Aldrich, 5 mg/mL) is added
to propylene carbonate (∼50 mL). A voltage of 8 V is applied
for 30 min between the electrodes to intercalate the 2D crystal with
TPA+ cations. The 2D crystal expands in each case to greater
than twice its original volume, indicating the successful intercalation
of the crystal. After intercalation, the 2D crystal is emersed in
IPA overnight to dissolve and remove any residual bromide ions (Br –) on the crystal.
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