2023
DOI: 10.1002/adfm.202314118
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Photocatalytic Coupling of CH4 and CO2 to Ethanol on Asymmetric Ce−O−Zn Sites

Shuya Hao,
Yangshen Chen,
Chen Peng
et al.

Abstract: Partial oxidation of methane (CH4) to value‐added products is significantly challenging due to the highly inert chemical property of CH4 at ambient conditions and easy over‐oxidation into carbon dioxide (CO2) or carbon monoxide (CO) at elevated temperatures and pressures. Targeting this challenge, the efficient photocatalytic coupling of CO2 and CH4 into ethanol is demonstrated, using a cerium (Ce)‐doped zinc oxide (ZnO) photocatalyst with abundant Ce─O─Zn units. Under light illumination, CO2 is adsorbed on th… Show more

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Cited by 8 publications
(2 citation statements)
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“…It was reported that the existence of Ce 3+ could generate oxygen vacancies on the catalyst surface. The oxygen vacancies of Ce 3+ ions formed on the Ce–O–Zn structure were regarded as a potential active site for CO 2 photoreduction to ethanol . The surface mass ratio of Zn/Ce was lower than the theoretical feed ratios and the ICP results (Table ), suggesting Ce was more easily enriched on the catalyst surface.…”
Section: Resultscontrasting
confidence: 97%
See 1 more Smart Citation
“…It was reported that the existence of Ce 3+ could generate oxygen vacancies on the catalyst surface. The oxygen vacancies of Ce 3+ ions formed on the Ce–O–Zn structure were regarded as a potential active site for CO 2 photoreduction to ethanol . The surface mass ratio of Zn/Ce was lower than the theoretical feed ratios and the ICP results (Table ), suggesting Ce was more easily enriched on the catalyst surface.…”
Section: Resultscontrasting
confidence: 97%
“…For comparison, ZSM-5(25)-supported other bimetals (Zn−Cu, Zn−Pd, Co− Pd, Zn−In, and Pd−Ce) catalysts were also prepared using the same method. Besides, ZSM-5 with SiO 2 /Al 2 O 3 molar ratios of 21, 25, 38, and 50 supported Zn−Ce catalysts were also synthesized and denoted as Zn−Ce/ZSM-5 (21), Zn−Ce/ ZSM-5 (25), Zn−Ce/ZSM-5 (38), and Zn−Ce/ZSM-5 (50), respectively. It should be pointed out that the SiO 2 /Al 2 O 3 ratio of ZSM was 25 in this study, if it was not illustrated.…”
Section: Catalyst Preparationmentioning
confidence: 99%