CO<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>/CH<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si26.svg"><mml:msub><mml:mrow /><mml:mn>4</mml:mn></mml:msub></mml:math> Conversion to synthesis gas (CO/H<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si3.svg"><mml:msub><mml:mrow /><mml:mn>2</mml:mn></mml:msub></mml:math>) in an internal combustion engine

Drost, Simon; Xie, Wenwen; Schießl, Robert; Maas, Ulrich

doi:10.1016/j.proci.2022.07.033

Cited by 3 publications

(7 citation statements)

References 16 publications

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“…The result further confirmed that Ag-ZnO had wide light adsorption from UV to visible light with narrow band gap energy, which contributes to the enhancement of CO2 conversion efficiency [6,13,18,20,[29][30][31]. The result further confirmed that Ag-ZnO had wide light adsorption from UV to visible light with narrowed band gap energy from 3.1 to 2.5 eV, which contributes to the enhancement of CO2 conversion efficiency [6,13,18,20,26].…”

Section: Optical Properties Of Zno and Ag-znosupporting

confidence: 64%

“…The results from the Tauc plots demonstrated that the loading of Ag onto ZnO narrowed its band energy from 3.1 eV to 2.5 eV. The result further confirmed that Ag-ZnO had wide light adsorption from UV to visible light with narrow band gap energy, which contributes to the enhancement of CO 2 conversion efficiency [6,13,18,20,[29][30][31].…”

Section: Optical Properties Of Zno and Ag-znomentioning

confidence: 58%

“…Figure 3 shows that the XPS survey of ZnO and Ag-ZnO with the presence of Zn (2p, 3d, 3p, 3s), O (1s), and Ag (3d) elements, determined the loaded of Ag over ZnO [13,14,20]. It also displayed the high spectrum intensity of O 1 s in the doped photocatalyst; thus, the loading of Ag would form more oxygen vacancies or functional groups and it may influence the CO2 conversion performance [6,9,12,24]. Figure 3 shows that the XPS survey of ZnO and Ag-ZnO with the presence of Zn (2p, 3d, 3p, 3s), O (1s), and Ag (3d) elements, determined the loaded of Ag over ZnO [13,14,20].…”

Section: Photocatalysts Propertiesmentioning

confidence: 98%

“…Therefore, finding a way to reduce the concentration of carbon dioxide (CO 2 ) is urgent in order to help our people avoid natural disasters and face environmental problems. Growing more trees, using public traffic, reducing waste, and replacing fossil fuels with green energy like H 2 , methanol, or renewable energy (solar light) are popular methods, nowadays [6][7][8]. However, each strategy has some limitations such as needing a long time, high cost, or being uncomfortable to use.…”

Section: Introductionmentioning

confidence: 99%

“…Photocatalytic conversion of carbon dioxide brings more advantages by utilizing natural solar light and reusing catalysts for a long time [13][14][15]. It could help to reduce to operation cost of the CO 2 conversion process and decrease the negative effect of greenhouse gas emissions [3,6,16].…”

Section: Introductionmentioning

confidence: 99%

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Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Hoài¹,

Huong²,

Pham

et al. 2022

Catalysts

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This work developed a strategy to enhance the photocatalytic activity of ZnO by doping it with silver nanoparticles (Ag) to improve the light adsorption and separation of charge carriers, which further increases the conversion of CO2. The loading of Ag over ZnO (Ag-ZnO) was confirmed by characterization methods (SEM, XRD, and XPS), and the photocatalytic activities of Ag-ZnO were significantly enhanced. As the result, the production rates of CO and CH4 by doped Ag-ZnO were 9.8 and 2.4 µmol g−1 h−1, respectively. The ZnO that had the production rate of CO was 3.2 µmol g−1 h−1 and it is relatively low for the production of CH4 at around 0.56 µmol g−1 h−1. The doping of Ag over ZnO displayed a high conversion rate for both CO and CH4, which were 3 and 4.2 times higher than that of ZnO. The doped Ag-ZnO photocatalyst also had high stability up to 10 cycles with less than 11% loss in the production of CO and CH4. The improvement of photocatalytic activities of Ag-ZnO was due to the Ag doping, which enhanced the light adsorption (400–500 nm) and narrowed band gap energy (2.5 eV), preventing the charge carrier separation. This work brings an efficient photocatalyst for CO2 conversion in order to reduce carbon dioxide concentration as well as greenhouse gas emissions.

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Section: Optical Properties Of Zno and Ag-znosupporting

confidence: 64%

Section: Optical Properties Of Zno and Ag-znomentioning

confidence: 58%

Section: Photocatalysts Propertiesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improved the Light Adsorption and Separation of Charge Carriers to Boost Photocatalytic Conversion of CO2 by Using Silver Doped ZnO Photocatalyst

Hoài¹,

Huong²,

Pham

et al. 2022

Catalysts

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Process Optimization for Syngas Production from the Dry Reforming of Methane over 5Ni+3Sr/10Zr+Al Catalyst Using Multiple Response Surface Methodology

Al‐Fatesh,

El‐Salamony,

Roushdy

et al. 2023

Adv Materials Inter

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Abstract5Ni+3Sr/10Zr+Al catalyst is synthesized using the impregnation method, characterized, and tested for dry reforming of methane. The influence of reaction temperature, feed ratio (CO2/CH4), and gas hour space velocity are examined using multiple response surface methodology through three factors in, a four‐level central composite design. Second and higher‐order regression models are applied to evaluate the interaction between the process parameters and responses. The results indicate that the reaction temperature is the most influential followed by the space velocity, while the feed ratio has a weak effect. The optimum values that maximize each of the response variables are found to be the reaction temperature at 746 °C, the space velocity of 12 000 ccg−1h−1, and the feed ratio of 0.958. Under these conditions, the predicted CH4 and CO2 conversions are 86.83% and 92.27%, respectively. While the H2/CO ratio is 1.02. On the other hand, the experimental results match the predicted ones when the optimum predicted operating conditions are used for the process. A weight loss of <16% is obtained on the spent catalyst after 86 h on stream. This is attributed to the highly basic and oxidative nature of the ZrO2 co‐supported catalyst and indicates the suitability of the developed catalyst.

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