Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

Othman, Putera Nik Aiman Mustaqim; Karim, Nabila A.; Kamarudin, Siti Kartom

doi:10.1002/er.6712

Cited by 14 publications

(11 citation statements)

References 191 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Various electrocatalysts such as Pt, Pd, and Au have been studied for glycerol conversion with controllable product selectivity. − Au is a highly active electrocatalyst for the partial oxidization of glycerol in the production of glycolic acid in alkaline solutions. − Au catalyzes the partial oxidation of glycerol to glyceric acid and then breaks the C–C bond in glyceric acid, thereby generating glycolic acid as the main product. , Efficient and selective glycerol conversion to glycolic acid over Au catalysts has received extensive interest. Zhang et al evaluated the effects of the potential and electrolyte concentration on Au catalysts supported on carbon nanotubes for the GEOR .…”

mentioning

confidence: 99%

Enhancing Glycerol Conversion and Selectivity toward Glycolic Acid via Precise Nanostructuring of Electrocatalysts

Kim

Tan

et al. 2021

ACS Catal.

View full text Add to dashboard Cite

The glycerol electro-oxidation reaction (GEOR) can economically convert glycerol, a byproduct of biodiesel production, to glycolic acid. Herein, nanostructured Au catalysts were fabricated on a Si substrate by the electrochemical reduction of anodic-treated (RA-treatment) Au films, which tuned the surface area from 1 to 16 cm2. Treatment of 0.1 M glycerol at 1.0 V (vs RHE) for 2 h in 1 M KOH solution afforded a glycerol conversion and glycolic acid selectivity of 50.9 and 47%, respectively. The RA-Au catalyst selectively afforded glycolic acid from glycerol due to the enhanced facet-dependent OH adsorption, especially at the (100) and (110) sites, as well as the increased surface area. RA treatment of a Au-coated Ni foam further enhanced the GEOR performance, affording 68.7% glycerol conversion and 41.2% glycolic acid selectivity at 1.0 V (vs RHE) within 2 h by providing more active sites.

show abstract

mentioning

confidence: 99%

Enhancing Glycerol Conversion and Selectivity toward Glycolic Acid via Precise Nanostructuring of Electrocatalysts

Kim

Tan

et al. 2021

ACS Catal.

View full text Add to dashboard Cite

show abstract

“…Thus, to solve the above problems, some new bimetallic catalysts such as Pt–Ru, Pt–Ag, and Pt–Pd have been investigated to improve ethanol gas sensors’ performance. − ,− …”

Section: Fundamental Of Fuel-cell-type Gas Sensorsmentioning

confidence: 99%

Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Mehrpooya

Ganjali

Mousavi

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Gas detection based on the electrochemical cells has recently been paid attention. Because of the many applications of fuel cell sensors, several investigations have been done on fuel-cell-type sensors for gas detection. In this study, the research works are categorized based on the type of the most used fuel cell sensors, such as CO, H2, methanol, and ethanol. Moreover, the manufacturing, applied technologies and the operating conditions of them, including the limit of detection, detection ranges, and response time of the fuel cells, are reviewed and discussed. Finally, according to the previous investigations that have been carried out, the gaps are introduced and evaluated to prepare beneficial suggestions for future investigations. According to the literature, humidity management using Pt–Cu/C is one of the most used manufacturing methods for improving a fuel cell sensor’s global and specific sensitivity. In addition, Nafion MEA with JM20 exhibits better detection performance of methanol sensors. Moreover, using nanotubes of multiwall carbon and nanoparticles of Pt–Pd in manufacturing shows proven improvements regarding the limit of detection and detection range for ethanol fuel cell sensors. PEFC-type sensor cells can improve the detection of CO to 0.2 ppm. Furthermore, the required targets for hydrogen fuel cell sensors in terms of safety and performance announced by the U.S. Department of Energy, for example, the response time of 1 s, are not reported in the open literature.

show abstract

“…Thus, several studies have been carried out using nonnoble metals or metallic oxides-based catalysts with relative success, i.e., even if the presence of the organic increases the rate of the oxidation, the reaction occurs at relatively high potentials, much higher than on PGM metals and close to those for the oxidation of water [13][14][15]. Thus, another approach extensively used in the context of fuel cells is, instead of avoiding the use of PGM, to reduce as much as possible the utilization of these expensive and scarce metals [5,16,17]. For the GEOR in alkaline media, we have successfully applied this idea by depositing low amounts of Pt, around 1% (m/m), on Ag nanoparticles, being able to obtain one third of the activity of Pt/C normalizing the current by catalyst mass or geometric area and one order of magnitude higher in terms of mass activity.…”

Section: Introductionmentioning

confidence: 99%

Glycerol (photo)electro-oxidation on carbon supported Ag nanoparticles modified with low amounts of Pt. Activity, selectivity and the effect of visible-light irradiation

Lima

Soares

Yukuhiro

et al. 2022

Preprint

View full text Add to dashboard Cite

The electrochemical production of hydrogen arises as one of the most important strategies to mitigate the problems caused by the pollution and the strong dependence on fossil fuel-derived sources of energy. Thus, improvements in the overall electrolysis process can contribute with this task. One of the problems that has been confronted for decades is the sluggishness of the electro-oxidation of water by preparing a myriad of materials with limited success. Therefore, instead of keeping on looking for materials to be applied for this reaction, one possibility is to change the water for another cheap substance, easier to be oxidized. In this context, biomass-derived resources, like several alcohols and polyols, emerge as suitable candidates to be oxidized in the anodes of electrolyzers. This way, it is possible to concomitantly obtain high purity hydrogen at the cathode and value-added biomass derivatives at the anode. Herein, to avoid/decrease the use of noble metals, we prepare Ag/C catalyst and modify the Ag surface by different quantities of Pt. The catalyst containing only 0.5% of Pt reached half the electro-oxidation peak current of Pt/C. Besides, considering the current normalized by Pt mass, this material is around 80 times more active than Pt/C. Apart from the electrochemical results, we irradiated our materials with white light and observed an increased activity for the electro-oxidation of glycerol, showing the presence of a plasmonic effect. FTIR in situ and HPLC online showed that all the catalysts produced glycerate, lactate, glycolate and formate and that the selectivity do not change with the irradiation of light. The most important difference between the materials was that while Pt/C produce carbonate, this specie was not detected for Pt-Ag/C. Finally, the materials were also tested for the electro-oxidation of ethanol, showing that they are promising for the electro-oxidation of several alcohols/polyols. Therefore, this study paves the way for future optimization of Ag/C catalyst modified on its surface with different more active materials that must be afterward tested in real devices like, for instance, anion exchange membrane electrolyzers.

show abstract

Research and innovation in the electrocatalyst development toward glycerol oxidation reaction

Cited by 14 publications

References 191 publications

Enhancing Glycerol Conversion and Selectivity toward Glycolic Acid via Precise Nanostructuring of Electrocatalysts

Enhancing Glycerol Conversion and Selectivity toward Glycolic Acid via Precise Nanostructuring of Electrocatalysts

Comprehensive Review of Fuel-Cell-Type Sensors for Gas Detection

Glycerol (photo)electro-oxidation on carbon supported Ag nanoparticles modified with low amounts of Pt. Activity, selectivity and the effect of visible-light irradiation

Contact Info

Product

Resources

About