Conversion of carbon dioxide to methanol over visible light responsive catalyst
The significant increase of carbon dioxide contributed for the largest share of the world’s greenhouse gas emissions. There is a growing need to mitigate CO2 emissions. One of the strategies to mitigate CO2 emissions is using CO2 as a raw material in chemical processes. In the present study, a TiO2...
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| Format: | Undergraduates Project Papers |
| Language: | English |
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2017
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| Online Access: | http://umpir.ump.edu.my/id/eprint/30490/ http://umpir.ump.edu.my/id/eprint/30490/1/21.Conversion%20of%20carbon%20dioxide%20to%20methanol%20over%20visible%20light%20responsive%20catalyst.pdf |
| _version_ | 1848823527106412544 |
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| author | Mariotte, Patrick Jebi |
| author_facet | Mariotte, Patrick Jebi |
| author_sort | Mariotte, Patrick Jebi |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The significant increase of carbon dioxide contributed for the largest share of the world’s greenhouse gas emissions. There is a growing need to mitigate CO2 emissions. One of the strategies to mitigate CO2 emissions is using CO2 as a raw material in chemical processes. In the present study, a TiO2 loaded copper (II) oxide (CuO) photoelectrode was synthesized, characterized and studied for photoelectrocatalytic (PEC) reduction of carbon dioxide (CO2) into methanol under visible light (λ > 470 nm) irradiation. In this perspective, The material was constructed via sol-gel method from copper (II) nitrate, Cu(NO3)2.3H2O (99 %) and commercial Degussa P25 TiO2 as precursors. The photocatalysts were characterized by X-ray diffraction, UV-vis absorption specra, X-ray photoelectron spectroscopy (XPS), photoluminescence spectrophotometer, and mott schottky (MS). Linear sweep voltammetry (LSV) was employed to evaluate the effect of visible light (λ >400 nm) on the CO2 reduction reactions. The characterization results indicated that the band gap energy of the CuO-TiO2 catalyst from UV-Vis is 1.39 eV. The flat band potential calculated from the MS data as 0.83 V versus normal hydrogen electrode (NHE). The LSV the dark and under visible light irradiation further support the visible light-responsive photocatalytic activities CuO-TiO2 giving onset potential value from -0.20 V with current peak potential appearing at -0.35V (vs NHE) suggesting an increase in photocurrent and occurrence CO2 photoreduction reaction. The PEC performance of CuO-TiO2 photocatalyst showed an increased methanol yield of 20.1 μmol.L-1.cm-2 under visible light irradiation. |
| first_indexed | 2025-11-15T02:58:33Z |
| format | Undergraduates Project Papers |
| id | ump-30490 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:58:33Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-304902023-08-16T04:36:18Z http://umpir.ump.edu.my/id/eprint/30490/ Conversion of carbon dioxide to methanol over visible light responsive catalyst Mariotte, Patrick Jebi TP Chemical technology The significant increase of carbon dioxide contributed for the largest share of the world’s greenhouse gas emissions. There is a growing need to mitigate CO2 emissions. One of the strategies to mitigate CO2 emissions is using CO2 as a raw material in chemical processes. In the present study, a TiO2 loaded copper (II) oxide (CuO) photoelectrode was synthesized, characterized and studied for photoelectrocatalytic (PEC) reduction of carbon dioxide (CO2) into methanol under visible light (λ > 470 nm) irradiation. In this perspective, The material was constructed via sol-gel method from copper (II) nitrate, Cu(NO3)2.3H2O (99 %) and commercial Degussa P25 TiO2 as precursors. The photocatalysts were characterized by X-ray diffraction, UV-vis absorption specra, X-ray photoelectron spectroscopy (XPS), photoluminescence spectrophotometer, and mott schottky (MS). Linear sweep voltammetry (LSV) was employed to evaluate the effect of visible light (λ >400 nm) on the CO2 reduction reactions. The characterization results indicated that the band gap energy of the CuO-TiO2 catalyst from UV-Vis is 1.39 eV. The flat band potential calculated from the MS data as 0.83 V versus normal hydrogen electrode (NHE). The LSV the dark and under visible light irradiation further support the visible light-responsive photocatalytic activities CuO-TiO2 giving onset potential value from -0.20 V with current peak potential appearing at -0.35V (vs NHE) suggesting an increase in photocurrent and occurrence CO2 photoreduction reaction. The PEC performance of CuO-TiO2 photocatalyst showed an increased methanol yield of 20.1 μmol.L-1.cm-2 under visible light irradiation. 2017-06 Undergraduates Project Papers NonPeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/30490/1/21.Conversion%20of%20carbon%20dioxide%20to%20methanol%20over%20visible%20light%20responsive%20catalyst.pdf Mariotte, Patrick Jebi (2017) Conversion of carbon dioxide to methanol over visible light responsive catalyst. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang. |
| spellingShingle | TP Chemical technology Mariotte, Patrick Jebi Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title | Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title_full | Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title_fullStr | Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title_full_unstemmed | Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title_short | Conversion of carbon dioxide to methanol over visible light responsive catalyst |
| title_sort | conversion of carbon dioxide to methanol over visible light responsive catalyst |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/30490/ http://umpir.ump.edu.my/id/eprint/30490/1/21.Conversion%20of%20carbon%20dioxide%20to%20methanol%20over%20visible%20light%20responsive%20catalyst.pdf |