期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 140, 期 48, 页码 16711-16719出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b09796
关键词
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资金
- NSFC [21503257, 21601198]
- Sino-Danish Centre (SDC)
- VILLUM Foundation Young Investigator Programme [VKR023449]
- Danish National Research Foundation (Carbon Dioxide Activation Center, DNRF) [118]
- Synfuels China Technology Co. Ltd.
Photocatalytic organic conversions involving a hydrogen transfer (HT) step have attracted much attention, but the efficiency and selectivity under visible light irradiation still needs to be significantly enhanced. Here we have developed a noble metal-free, basic-site engineered bismuth oxybromide [Bi24O31Br10(OH)(delta)] that can accelerate the photocatalytic HT step in both reduction and oxidation reactions, i.e., nitrobenzene to azo/azoxybenzene, quinones to quinols, thiones to thiols, and alcohols to ketones under visible light irradiation and ambient conditions. Remarkably, quantum efficiencies of 42% and 32% for the nitrobenzene reduction can be reached under 410 and 450 nm irradiation, respectively. The Bi24O31Br10(OH)(delta) photocatalyst also exhibits excellent performance in up-scaling and stability under visible light and even solar irradiation, revealing economic potential for industrial applications.
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