Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium
In this communication report, a comparative study between P-doped Pd/CNT and bare Pd/CNT catalyst was carried out to decouple the effects of phosphorous-doping on electro-oxidation of glycerol. The initial characterization results suggested that Pd and its oxides were successfully incorporated withi...
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| Format: | Article |
| Language: | English English |
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Elsevier Ltd
2020
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| Online Access: | http://umpir.ump.edu.my/id/eprint/28620/ http://umpir.ump.edu.my/id/eprint/28620/1/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped%20.pdf http://umpir.ump.edu.my/id/eprint/28620/2/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped_FULL.pdf |
| _version_ | 1848823098147602432 |
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| author | Muhammad Sheraz, Ahmad Singh, Sharanjit Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. Wongsakulphasatch, Suwimol |
| author_facet | Muhammad Sheraz, Ahmad Singh, Sharanjit Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. Wongsakulphasatch, Suwimol |
| author_sort | Muhammad Sheraz, Ahmad |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | In this communication report, a comparative study between P-doped Pd/CNT and bare Pd/CNT catalyst was carried out to decouple the effects of phosphorous-doping on electro-oxidation of glycerol. The initial characterization results suggested that Pd and its oxides were successfully incorporated within the pore channels of CNTs support for both catalysts by using hydrazine-assisted hydrothermal technique. The XPS results revealed that the amount of Pd2+ for bare Pd/CNT were 1.4 times higher than P-doped electrocatalysts (about 70.1% and 48.7%, respectively) which confirms that phosphorus facilitates the reduction of Pd2+ to metallic Pd (Pd0). The electrochemical results showed that the electrochemical surface area (392.22 m2 gPd−1) and current density (26 mA/cm2) for P-doped Pd/CNT catalyst were 2.84 and 1.6 times, respectively, higher than Pd/CNT catalyst. The P-doped catalyst was found to suppress the formation of carbonaceous intermediates; thus, improved the glycerol oxidation reaction. Small quantities of deep oxidation side products such as mesoxalic acid (<2%) and tartronic acid (<0.1%) were found along with the dihydroxyacetone (DHA), a major product of glycerol electro-oxidation. The best performing catalyst exhibited 1.4 folds higher DHA selectivity (90.8%) compared to the Pd/CNT. |
| first_indexed | 2025-11-15T02:51:44Z |
| format | Article |
| id | ump-28620 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T02:51:44Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-286202022-11-03T09:32:11Z http://umpir.ump.edu.my/id/eprint/28620/ Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium Muhammad Sheraz, Ahmad Singh, Sharanjit Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. Wongsakulphasatch, Suwimol TP Chemical technology In this communication report, a comparative study between P-doped Pd/CNT and bare Pd/CNT catalyst was carried out to decouple the effects of phosphorous-doping on electro-oxidation of glycerol. The initial characterization results suggested that Pd and its oxides were successfully incorporated within the pore channels of CNTs support for both catalysts by using hydrazine-assisted hydrothermal technique. The XPS results revealed that the amount of Pd2+ for bare Pd/CNT were 1.4 times higher than P-doped electrocatalysts (about 70.1% and 48.7%, respectively) which confirms that phosphorus facilitates the reduction of Pd2+ to metallic Pd (Pd0). The electrochemical results showed that the electrochemical surface area (392.22 m2 gPd−1) and current density (26 mA/cm2) for P-doped Pd/CNT catalyst were 2.84 and 1.6 times, respectively, higher than Pd/CNT catalyst. The P-doped catalyst was found to suppress the formation of carbonaceous intermediates; thus, improved the glycerol oxidation reaction. Small quantities of deep oxidation side products such as mesoxalic acid (<2%) and tartronic acid (<0.1%) were found along with the dihydroxyacetone (DHA), a major product of glycerol electro-oxidation. The best performing catalyst exhibited 1.4 folds higher DHA selectivity (90.8%) compared to the Pd/CNT. Elsevier Ltd 2020-05 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/28620/1/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped%20.pdf pdf en http://umpir.ump.edu.my/id/eprint/28620/2/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped_FULL.pdf Muhammad Sheraz, Ahmad and Singh, Sharanjit and Cheng, C. K. and Ong, Huei Ruey and Hamidah, Abdullah and Khan, Maksudur R. and Wongsakulphasatch, Suwimol (2020) Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium. Catalysis Communications, 139 (105964). pp. 1-6. ISSN 1566-7367. (Published) https://doi.org/10.1016/j.catcom.2020.105964 https://doi.org/10.1016/j.catcom.2020.105964 |
| spellingShingle | TP Chemical technology Muhammad Sheraz, Ahmad Singh, Sharanjit Cheng, C. K. Ong, Huei Ruey Hamidah, Abdullah Khan, Maksudur R. Wongsakulphasatch, Suwimol Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title | Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title_full | Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title_fullStr | Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title_full_unstemmed | Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title_short | Glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped Pd/CNT nanoparticles in alkaline medium |
| title_sort | glycerol electro-oxidation to dihydroxyacetone on phosphorous-doped pd/cnt nanoparticles in alkaline medium |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/28620/ http://umpir.ump.edu.my/id/eprint/28620/ http://umpir.ump.edu.my/id/eprint/28620/ http://umpir.ump.edu.my/id/eprint/28620/1/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped%20.pdf http://umpir.ump.edu.my/id/eprint/28620/2/Glycerol%20electro-oxidation%20to%20dihydroxyacetone%20on%20phosphorous-doped_FULL.pdf |