Synthesis and physioelectrochemical characterization of triethylammonium bisulphate ionic liquid and the role of the electrode surface oxides during ethanol oxidation

Muhammad, Sayyar; Khan, Jalal; Javed, Sadia; Iqbal, Riffat; Wali, Hajra; Shah, Luqman Ali; Khan, Kamran; Ahmad, Shabir

doi:10.1016/j.cplett.2020.137902

Cited by 5 publications

(11 citation statements)

References 31 publications

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“…The larger the electrochemical window, especially the higher the anode OEP, the more favorable is the oxidation reaction that occurs at a high potential. Figure 2(a) shows that the electrochemical window and OEP of the DIL-PbO 2 -Ti/BDD electrode obtained by CV testing at a scan rate of 50 mV s À1 in 1 M H 2 SO 4 were 4.12 and 3.29 V, respectively, which were substantially higher than those of Pt, PbO 2 and Ti/BDD electrodes were reported previously (Zhang et al 2019;Muhammad et al 2020;Souri et al 2020). The DIL-PbO 2 -Ti/BDD electrode with wider electrochemical window and higher OEP showed better electrochemical oxidation performance.…”

Section: Electrode Morphology and Electrochemical Propertiesmentioning

confidence: 60%

PbO2 modified BDD electrode by dicationic ionic liquids assisted electrodeposition for efficient electrocatalytic degradation of pesticide wastewater

Tang

Feng

2022

Water Science and Technology

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Pesticide wastewater is difficult to treat, and it is necessary to develop a new anode material electrochemical oxidation to efficiently degrade pesticide wastewater. DIL-PbO2-Ti/BDD electrodes with better electrocatalytic oxidation performance were obtained by using dicationic ionic liquid (DIL) for assisted electrodeposition of PbO2 modified boron-doped diamond (BDD) electrodes. At a current density of 100 mA cm−2 and a temperature of 25 °C using the DIL-PbO2-Ti/BDD electrode as anode and titanium plate as cathode. The electrochemical window and Oxygen evolution potential (OEP) of the DIL-PbO2-Ti/BDD electrode obtained by CV testing at a scan rate of 50 mV s−1 in 1 M H2SO4 were 4.12 V and 3.29 V, respectively. Under the conditions of current density of 100 mA cm−2, 25 °C, pH 12, salt content of 8%, chemical oxygen demand (COD) of 24,280.98 mg L−1, and total nitrogen (TN) content of 5,268 mg L−1, after electrification for 12 h, the removal efficiency of COD and TN reached 64.88% and 67.77%, respectively, indicating that the DIL-PbO2-Ti/BDD electrode has excellent electrocatalytic performance. In order to further understand the mechanism of electrochemical degradation of pesticide wastewater, HPLC-MS was used to detect the intermediates in the degradation process, and the possible degradation pathways were proposed in turn.

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Section: Electrode Morphology and Electrochemical Propertiesmentioning

confidence: 60%

PbO2 modified BDD electrode by dicationic ionic liquids assisted electrodeposition for efficient electrocatalytic degradation of pesticide wastewater

Tang

Feng

2022

Water Science and Technology

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“…The electrochemical behavior of the Pt/GC catalyst during EtOH oxidation in H 2 SO 4 (aq. [22][23][24][25][26] The onset potential for the oxidation of water to PtOH/PtO in 0.5 M H 2 SO 4 (aq.) is lower and the peak current is higher than that in the [dema][TfO].…”

Section: Electrocatalytic Oxidation Of Etoh In [Dema][tfo]mentioning

confidence: 99%

“…This is due to the presence of more water concentration and the less viscous nature of the acid medium compared to that in the PIL medium which has trace water (240 ppm) and is more viscous. 22,24 The electrochemical responses obtained for EtOH oxidation in aqueous acid is briefly described here, before discussing the electrooxidation of EtOH in [dema][TfO]. During the positive going (forward) sweep in the EtOH-containing H 2 SO 4 , the H upd adsorption/desorption features (o0.4 V) were inhibited compared to blank CV.…”

Section: Electrocatalytic Oxidation Of Etoh In [Dema][tfo]mentioning

confidence: 99%

“…PILs possess low melting points, negligible volatility and low vapor pressure at ambient temperature, intrinsic ionic conductivity, high polarity, and thermal, chemical, and electrochemical stability. [22][23][24][25] Many researchers have proposed that PILs could be used in electrochemical devices such as Li-ion batteries and fuel cells [26][27][28] but before such developments can be realized, it is important that we develop a thorough understanding of electrocatalysis in these unique liquids. The oxidation of trace water present in PILs can yield adsorbed oxide species (O/OH ads ) at a Pt surface that can affect various electrocatalytic processes.…”

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confidence: 99%

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Electrochemistry of ethanol and dimethyl ether at a Pt electrode in a protic ionic liquid: the electrode poisoning mechanism

Muhammad¹,

Walsh²

2023

Phys. Chem. Chem. Phys.

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“…Currently, new catalysts are generally only assessed on the basis of their electrochemical performance (current and power vs potential), while their efficiency and emissions are neglected or only determined at ambient temperature. − There is a clear lack of information regarding ethanol electrooxidation reaction (EOR) mechanisms in DEFCs. − Therefore, more mechanistic studies should be geared to understanding how these electrode materials function in fuel cells. Cathodic and anodic materials must be optimized.…”

Section: Introductionmentioning

confidence: 99%

Overview on the Vital Step toward Addressing Platinum Catalyst Poisoning Mechanisms in Acid Media of Direct Ethanol Fuel Cells (DEFCs)

Altarawneh

2021

Energy Fuels

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Direct ethanol fuel cells (DEFCs) offer one of the attractive alternatives to conventional combustion technologies as low carbon power sources for vehicles and could become important power sources for consumer electronics and distributed power systems. They provide very high theoretical efficiency (97%), and ethanol is a safe, plentiful, and renewable resource that can be simply stored and handled through the current infrastructure. However, the development and commercialization of DEFCs are hampered by low practical efficiencies and the production of acetaldehyde and acetic acid byproducts as well as carbon monoxide. New anode catalysts are needed to solve these problems, and these need to be evaluated in terms of their electrochemical performance, efficiency, and emissions. In combination with computational studies, various experimental techniques including DEMS, in situ FTIR, and NMR could be employed to provide insights regarding the mechanisms of the ethanol electrooxidation reaction occurring at the newly designed anode catalysts. This insight is necessary to provide the understanding required to allow highly active catalytic materials to be developed and thus enhance the performance and efficiency of DEFCs.

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Synthesis and physioelectrochemical characterization of triethylammonium bisulphate ionic liquid and the role of the electrode surface oxides during ethanol oxidation

Cited by 5 publications

References 31 publications

PbO2 modified BDD electrode by dicationic ionic liquids assisted electrodeposition for efficient electrocatalytic degradation of pesticide wastewater

PbO2 modified BDD electrode by dicationic ionic liquids assisted electrodeposition for efficient electrocatalytic degradation of pesticide wastewater

Electrochemistry of ethanol and dimethyl ether at a Pt electrode in a protic ionic liquid: the electrode poisoning mechanism

Overview on the Vital Step toward Addressing Platinum Catalyst Poisoning Mechanisms in Acid Media of Direct Ethanol Fuel Cells (DEFCs)

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