Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface
Abstract Systematic optimization of the photocatalyst and investigation of the role of each component is important to maximizing catalytic activity and comprehending the photocatalytic conversion of CO2 reduction to solar fuels. A surface‐modified Ag@Ru‐P25 photocatalyst with H2O2 treatment was desi...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | Carbon Energy |
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| Online Access: | https://doi.org/10.1002/cey2.386 |
| _version_ | 1827367790486487040 |
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| author | Chaitanya B. Hiragond Sohag Biswas Niket S. Powar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin‐Woo Jung Chang‐Hee Cho Bryan M. Wong Su‐Il In |
| author_facet | Chaitanya B. Hiragond Sohag Biswas Niket S. Powar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin‐Woo Jung Chang‐Hee Cho Bryan M. Wong Su‐Il In |
| author_sort | Chaitanya B. Hiragond |
| collection | DOAJ |
| description | Abstract Systematic optimization of the photocatalyst and investigation of the role of each component is important to maximizing catalytic activity and comprehending the photocatalytic conversion of CO2 reduction to solar fuels. A surface‐modified Ag@Ru‐P25 photocatalyst with H2O2 treatment was designed in this study to convert CO2 and H2O vapor into highly selective CH4. Ru doping followed by Ag nanoparticles (NPs) cocatalyst deposition on P25 (TiO2) enhances visible light absorption and charge separation, whereas H2O2 treatment modifies the surface of the photocatalyst with hydroxyl (–OH) groups and promotes CO2 adsorption. High‐resonance transmission electron microscopy, X‐ray photoelectron spectroscopy, X‐ray absorption near‐edge structure, and extended X‐ray absorption fine structure techniques were used to analyze the surface and chemical composition of the photocatalyst, while thermogravimetric analysis, CO2 adsorption isotherm, and temperature programmed desorption study were performed to examine the significance of H2O2 treatment in increasing CO2 reduction activity. The optimized Ag1.0@Ru1.0‐P25 photocatalyst performed excellent CO2 reduction activity into CO, CH4, and C2H6 with a ~95% selectivity of CH4, where the activity was ~135 times higher than that of pristine TiO2 (P25). For the first time, this work explored the effect of H2O2 treatment on the photocatalyst that dramatically increases CO2 reduction activity. |
| first_indexed | 2024-03-08T09:18:02Z |
| format | Article |
| id | doaj.art-507a320879284d599aa9cc6f75e7c2f6 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-03-08T09:18:02Z |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-507a320879284d599aa9cc6f75e7c2f62024-01-31T13:56:25ZengWileyCarbon Energy2637-93682024-01-0161n/an/a10.1002/cey2.386Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interfaceChaitanya B. Hiragond0Sohag Biswas1Niket S. Powar2Junho Lee3Eunhee Gong4Hwapyong Kim5Hong Soo Kim6Jin‐Woo Jung7Chang‐Hee Cho8Bryan M. Wong9Su‐Il In10Department of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Chemical & Environmental Engineering, Materials Science & Engineering Program, Department of Chemistry, Department of Physics & Astronomy University of California‐Riverside Riverside California USADepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Physics and Chemistry Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Physics and Chemistry Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaDepartment of Chemical & Environmental Engineering, Materials Science & Engineering Program, Department of Chemistry, Department of Physics & Astronomy University of California‐Riverside Riverside California USADepartment of Energy Science & Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of KoreaAbstract Systematic optimization of the photocatalyst and investigation of the role of each component is important to maximizing catalytic activity and comprehending the photocatalytic conversion of CO2 reduction to solar fuels. A surface‐modified Ag@Ru‐P25 photocatalyst with H2O2 treatment was designed in this study to convert CO2 and H2O vapor into highly selective CH4. Ru doping followed by Ag nanoparticles (NPs) cocatalyst deposition on P25 (TiO2) enhances visible light absorption and charge separation, whereas H2O2 treatment modifies the surface of the photocatalyst with hydroxyl (–OH) groups and promotes CO2 adsorption. High‐resonance transmission electron microscopy, X‐ray photoelectron spectroscopy, X‐ray absorption near‐edge structure, and extended X‐ray absorption fine structure techniques were used to analyze the surface and chemical composition of the photocatalyst, while thermogravimetric analysis, CO2 adsorption isotherm, and temperature programmed desorption study were performed to examine the significance of H2O2 treatment in increasing CO2 reduction activity. The optimized Ag1.0@Ru1.0‐P25 photocatalyst performed excellent CO2 reduction activity into CO, CH4, and C2H6 with a ~95% selectivity of CH4, where the activity was ~135 times higher than that of pristine TiO2 (P25). For the first time, this work explored the effect of H2O2 treatment on the photocatalyst that dramatically increases CO2 reduction activity.https://doi.org/10.1002/cey2.386gas‐phase CO2 reductionH2O2 treatmentplasmonic nanoparticlessolar fuel photocatalystsurface modification |
| spellingShingle | Chaitanya B. Hiragond Sohag Biswas Niket S. Powar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin‐Woo Jung Chang‐Hee Cho Bryan M. Wong Su‐Il In Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface Carbon Energy gas‐phase CO2 reduction H2O2 treatment plasmonic nanoparticles solar fuel photocatalyst surface modification |
| title | Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface |
| title_full | Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface |
| title_fullStr | Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface |
| title_full_unstemmed | Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface |
| title_short | Surface‐modified Ag@Ru‐P25 for photocatalytic CO2 conversion with high selectivity over CH4 formation at the solid–gas interface |
| title_sort | surface modified ag ru p25 for photocatalytic co2 conversion with high selectivity over ch4 formation at the solid gas interface |
| topic | gas‐phase CO2 reduction H2O2 treatment plasmonic nanoparticles solar fuel photocatalyst surface modification |
| url | https://doi.org/10.1002/cey2.386 |
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