Synergy of Oxygen Vacancies and Acid Sites on N-Doped WO3 Nanobelts for Efficient C–C Coupling Synthesis of Benzoin Isopropyl Ether
Source abstract
Abstract
The surface property of a photocatalyst, including surface acid sites and oxygen vacancies, plays a pivotal role in photocatalytic organic synthesis reactions. Benzoin isopropyl ether (BIE) is usually produced via polycondensation of benzaldehyde and catalyzed with highly toxic cyanide. Here, we report a green photocatalytic approach for the selective synthesis of BIE over WO3 driven by a green-light-emitting diode. The improved photocatalytic activity can be attributed to the synergy of oxygen vacancies (VOs) and acid sites over N-doped WO3 nanobelts. The results revealed that reactant molecules were predominantly adsorbed and activated on surface oxygen vacancies (VOSs) and the Brønsted acid promoted the etherification reaction; the introduction of VOs and nitrogen altered the band structure and electronic properties, resulting in improved photocatalytic activity. Our work provides an efficient approach to the selective photocatalytic synthesis of organics over photocatalysts with finely tuned surface properties and band structures via defect and doping engineering.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · Caching and Content Delivery
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Materials Science & Engineering, University of Jinan, Nanxinzhuang West Road 336, Jinan, Shandong 250022, China
College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei 443002, China
Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
Key Laboratory of Photochemical Conversion and Optoelectronic Material, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
Department of Chemistry, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China
Funding
Taishan Scholar Project of Shandong Province · National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Key Laboratory of Photochemical Conversion and Optoelectronic Materials · Science and Technology Program of University of Jinan
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