2026-10-12T04:55:41Z https://www.scidb.cn/oai

10.57760/sciencedb.j00124.00236 2025-06-06T14:01:02Z

2025-06-06 Photocatalytic C-C coupling of acetonitrile into succinonitrile over hydrophobic TiO2 in a flow reactor doi:10.57760/sciencedb.j00124.00236 en A radical C-C-coupling reaction of acetonitrile into succinonitrile over hydrophobic TiO2 photocatalyst with enhanced catalytic activity was developed. In addition, the usage of a flow reactor further improved the photon utilization efficiency for succinonitrile synthesis at room temperature. The space time yield of succinonitrile reached 55.59 μmol·gcat.-1·h-1 over hydrophobic TiO2 catalyst, which was much higher than that of pristine TiO2 (4.23 μmol·gcat.-1·h-1). Mechanistic studies revealed that the hydrophobic modification of TiO2 promoted the separation and transfer of photogenerated carriers, as well as suppressed their recombination. Hydrophobic TiO2 also enhanced the adsorption of -CH3 of acetonitrile, thus facilitating the activation of C-H bond and the utilization efficiency of photocarriers. Photocatalysis; succinonitrile; C-C coupling; hydrophobic TiO2; flow reactor 龚坤 黄敏 李瑞涛 代元元 牛强 林铁军 钟良枢 RESTRICTED dataset Science Data Bank