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Arjona N, Torres‒Pacheco LJ, Álvarez‒Contreras L, Guerra‒Balcázar M. Gold structures on 3D carbon electrodes as highly active nanomaterials for the clean energy conversion of crude glycerol. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Qiu J, Boskin D, Oleson D, Wu W, Anderson M. Plasmon-enhanced electrochemical oxidation of 4-(hydroxymethyl)benzoic acid. J Chem Phys 2022; 157:081101. [DOI: 10.1063/5.0106914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Plasmon-mediated electrocatalysis based on plasmonic gold nanoparticles (Au NPs) has emerged as a promising approach to facilitate electrochemical reactions with the introduction of light to excite the plasmonic electrodes. We have investigated the electrochemical oxidation of 4-(hydroxymethyl)benzoic acid (4-HMBA) on gold (Au), nickel (Ni), and platinum (Pt) metal working electrodes in alkaline electrolytes. Au has the lowest onset potential for catalyzing the electrooxidation of 4-HMBA among the three metals in base whereas Pt does not catalyze the electrooxidation of 4-HMBA under alkaline conditions, although it is conventionally a good electrocatalyst for alcohol oxidation. Both 4-carboxybenzaldehyde and terephthalic acid are detected as the products of electrochemical oxidation of 4-HMBA on the Au working electrode by high-performance liquid chromatography (HPLC). The electrodeposited Au NPs on indium tin oxide (ITO)-coated glass is further utilized as the working electrode for the 4-HMBA electrooxidation. With its broad absorption in the visible and near-infrared (NIR) range, we show that the Au NPs on the ITO electrode could enhance the electrochemical oxidation of 4-HMBA under green and red LED light illuminations (505 nm and 625 nm). A possible reaction mechanism is proposed for the electrochemical oxidation of 4-HMBA on Au working electrodes in an alkaline electrolyte.
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Affiliation(s)
- Jingjing Qiu
- Chemistry and Biochemistry, San Francisco State University, United States of America
| | - Daniel Boskin
- San Francisco State University, United States of America
| | - Dallas Oleson
- San Francisco State University, United States of America
| | - Weiming Wu
- San Francisco State University, United States of America
| | - Marc Anderson
- San Francisco State University, United States of America
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