Spatial charge separation on the (110)/(102) facets of cocatalyst-free ZnIn2S4 for the selective conversion of 5-hydroxymethylfurfural to 2,5-diformylfuran
العنوان: | Spatial charge separation on the (110)/(102) facets of cocatalyst-free ZnIn2S4 for the selective conversion of 5-hydroxymethylfurfural to 2,5-diformylfuran |
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المؤلفون: | Heng Zhao, Dhwanil Trivedi, Morteza Roostaeinia, Xue Yong, Jun Chen, Pawan Kumar, Jing Liu, Bao-Lian Su, Steve Larter, Md Golam Kibria, Jinguang Hu |
المصدر: | Green Chemistry. 25:692-699 |
بيانات النشر: | Royal Society of Chemistry (RSC), 2023. |
سنة النشر: | 2023 |
مصطلحات موضوعية: | Environmental Chemistry, Pollution |
الوصف: | Photorefining of biomass and its derivatives to value-added chemicals is an alternative solution to address the global energy shortage and environmental issues. Herein, efficient and selective oxidation of 5-hydroxymethylfurfural (HMF, 91.1% conversion) to 2,5-diformylfuran (DFF, 99.4% selectivity) is demonstrated by visible light-driven photocatalysis over cocatalyst-free ZnIn2S4 nanosheets with crystal facet engineering. The spatial accumulation of photogenerated electrons and holes on the (110) and (102) crystal facets triggers a two-electron oxygen reduction reaction (2e-ORR) for H2O2 generation and HMF oxidation into DFF, respectively. The severe attenuation of photostability is caused by the irreversible photocorrosion of Zn-S with the formation of Zn-O chemical bonds by the formation of ˙OH from the in situ decomposition of H2O2. Spontaneous substitution of oxygen with sulfur has been proven to efficiently improve the photostability of ZnIn2S4. This present work provides insights into improving the durability of ZnIn2S4 and sheds new light on biomass valorization via photorefinery. |
تدمد: | 1463-9270 1463-9262 |
DOI: | 10.1039/d2gc04362a |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c5876f310b468439326f62f02e898f4 https://doi.org/10.1039/d2gc04362a |
Rights: | CLOSED |
رقم الانضمام: | edsair.doi.dedup.....2c5876f310b468439326f62f02e898f4 |
قاعدة البيانات: | OpenAIRE |
تدمد: | 14639270 14639262 |
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DOI: | 10.1039/d2gc04362a |